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Transcript of FIDIC - Cátedrasfci.uib.es/digitalAssets/177/177085_6.pdf · fidic. the search for ... patarroyo...
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FUNDACION INSTITUTO DE INMUNOLOGIA DE
COLOMBIAFIDIC
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THE SEARCH FOR
π
Or
A MATHEMATICAL METHOD FOR DEVELOPING
VACCINES
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Whooping coug355 thousand
Helminthiasis165 thousand
Diarrhoea3.1 millions
Tuberculosis3.1 millions
Malaria2.1 millions
Acute Respiratory Infections4.4 millions
Measles1 millionHIV/AIDS
1 million
Tetanus500 thousand
Hepatitis1.1 millions
TEN LEADING CAUSES OF MORTALITY IN THE WORLD
INDUCED BY TRANSMITTABLE DISEASES
WHO-1995
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BIOLOGICAL VACCINES
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VACCINES IN PROGRESS
SMALL POXPOLIO
MEASLESPAROTIDITIS
GERMAN MEASLESCHICKEN POX
ACTUAL VACCINES
HEPATITIS A & BYELLOW FEVER
RABIESBCGDPT
SCHISTOCARIESLYME
STREPTOCOCCUSRICKETS
INFLUENZAROTAVIRUS
RSVPAPILOMA, ETC
MALARIAAIDS
TYPHUSCHOLERA
MENINGITISDENGUEHERPES
S.T.D.LEISHMANIA
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PURPOSE :
To find a rational approach
for thedevelopment of
chemicallysynthetizedvaccines.
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Plasmodium falciparumPARASITE�S LIFE CYCLE
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Why malaria?• 300 million people are
infected and 3 million dieannually
• Acute disease• Easy diagnosis• Curable with treatment• Experimental model: the
Aotus monkey• Heavy economic burden
for the developing world
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0
2
4
6
8
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15D ays
859876932994942978
01234567
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15D ays
643847983980981
01234567
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15D ays
883977874952
01234567
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15D ays
680872574515631860
TITRATION OF THE FVO P. falciparum STRAIN IN AOTUS
MONKEYS
106
105
104
107
Rodriguez R. et al. 1990. Am. J. Trop. Med. Hyg 43:339
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Accepted in IMMUNOGENETICSUnusual Variability in Aotus monkey MHC-E sequences
Paula P. Cárdenas1, Carlos F. Suárez1, Consuelo P. Martínez, Eugenio J. Llanos, Mateo Obregón, Manuel E.
Patarroyo, Manuel A. Patarroyo *
Aotus monkey MHC-E
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9 7 9 7
69
¤6 6
¤6
¤67
4 4 4¤46
6¤67
¤ ¤9
97¤
4 7¤ ¤
9¤9
¤
97 7
¤ ¤7
¤4¤ ¤
46
4¤
4¤
4 4¤
4 1¤
1¤
1 1¤
1¤ ¤
1¤
1 1
Ao-D
RB*W
104
HLA-
DRB1
*04
Ao-D
RB*W
304
HLA-
DRB1
*03
9 7 9 7
69
¤6 6
¤6
¤67
4 4 4¤46
6¤67
¤ ¤9
97¤
4 7¤ ¤
9¤9
¤
97 7
¤ ¤7
¤4¤ ¤
46
4¤
4¤
4 4¤
4 1¤
1¤
1 1¤
1¤ ¤
1¤
1 1
Logos obtenidos a partir de las secuencias de los Aotus (Ao-DRB*W) y de las secuencias de
humanos (HLA-DRB)
Ao-D
RB*W
11HL
A-DR
B1*0
8-14
9 7 9 769¤
6 6¤
6¤67
4 4 4¤46
6¤67
¤ ¤9
97¤
4 7¤ ¤
9¤9
¤97 7
¤ ¤7
¤4¤ ¤
46
4¤
4¤
4 4¤
4 1¤
1¤
1 1¤
1¤ ¤
1¤
1 1
9 7 9 7
69¤
6 6¤
6¤67
4 4 4¤46
6¤67
¤ ¤9
97¤
4 7¤ ¤
9¤9
¤97 7
¤ ¤7
¤4¤ ¤
46
4¤
4¤
4 4¤
4 1¤
1¤
1 1¤
1¤ ¤
1¤
1 1
Ao-D
RB*W
101
HLA-
DRB1
*01
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% m
ean
% m
in
% m
ax
% m
ean
% m
in
% m
ax
Ao-DRB*W104 vs. HLA-DRB1*04 95 91 98 93 80 100Ao-DRB*W304 vs. HLA-DRB1*03 92 88 95 85 77 91Ao-DRB*W302 vs. HLA-DRB3 92 89 94 84 77 91Ao-DRB*W11 vs. HLA-DRB1*08 92 88 96 83 74 91Ao-DRB*W303 vs. HLA-DRB3 91 86 94 83 71 91Ao-DRB*W301 vs. HLA-DRB3 90 86 93 84 74 91Ao-DRB*W11 vs. HLA-DRB1*11 90 85 95 83 71 91Ao-DRB*W11 vs. HLA-DRB1*13 90 85 96 81 71 91Ao-DRB*W701/02 vs. HLA-DRB1*07 90 87 93 80 74 88Ao-DRB*W101 vs. HLA-DRB1*01 90 84 94 80 74 88Ao-DRB*W11 vs. HLA-DRB1*14 89 85 96 80 68 91Ao-DRB*W4 vs. HLA DRB1*10 88 84 89 74 68 80Ao-DRB*W4 vs. HLA DRB4 88 83 91 72 65 80
β domain Pockets
HumanOwl Monkey
Promedio y Rango de homología entre Ao-DRβ y HLA-DRβ en el dominio β y
posiciones de los Pockets
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IMMUNOBLOT OFP. falciparum ISOLATED
PROTEINSPatarroyo M. E. et. al. 1987. Vaccines. 117-124
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PARASITAEMIA IN MONKEYS IMMUNISED WITH MEROZOITE
PURIFIED PROTEINS
Immunizing Monkey Percentage of parasitemia on days (after challenge)molecule number 6 7 8 9 10 11 12 13 14 15 16 17 18 19
155K 087 0 0 0 0 0.88 0.30 2.0 3.0 5.35 8.8 Q 090 0 0 0 0 0 0 0.8 0.2 0.45 0.9 1.5 1.6 2.0 3.4
115K 085 0 0.46 0.84 3.48 3.0 9.93 Q150 0 0.05 0.20 1.12 1.67 nd 6.57 Q
105K 165 0 0.33 1.92 3.72 10.9 Q168 0 0.81 1.64 3.33 11.5 Q
90K 160 0 0.13 1.2 3.39 4.14 13.65 Q170 0 0.10 1.1 1.20 5.09 5.40 14.7 Q
83K 125 0 0 0 0 0 0 0 0 0 0 0 0 0 0130 0 0 0 0.6 0.2 0.3 3.63 1.6 1.1 0.6 nd 0 0 0144 0 0 0 0 0 0 0 0.1 0.05 0.5 0.3 0.07 0.03 0.01
60K 119 0 0 0 0.1 0.80 0.15 4.5 1.25 15.3 Q122 0 0.13 0.25 0.15 0.80 2.5 17.5 Q
55K 0.81 0 0 0 0 0 0.18 0.24 0.8 1.57 3.0 3.5 4.4 7.4 Q102 0 0 0 0 0 0.05 0.05 0.5 0 0.1 0.6 0.9 5.4 7.3
50K 0.29 0 0.40 1.50 3.6 4.67 10.0 Q 0.56 0 0.66 5.6 4.43 6.42 4.20 11.3 Q131 0 0.31 1.50 0.50 3.93 2.0 16.5 Q
40K 111 0 0 0 0 1.02 0.20 2.7 3.2 14.3 Q114 0 0 0 0 0.8 0.5 2.0 2.0 2.0 7.6 Q
35K 135 0 0 0 0 0 0 0.01 0.03 0.03 0.1 0.012 0.01 0 0159 0 0.25 0.25 1.3 2.23 1.03 2.5 2.1 4.0 2.1 1.6 0.7 0.08 0.01
30K 093 0 0.05 1.52 2.5 4.75 3.45 2.54 4.8 9.4 Q171 0 0.1 2.5 1.6 2.63 2.05 13.0 Q
23K 112 0 0.06 0 1.0 0 3.60 6.37 6.60 12.0 Q 137 0 0.05 0.05 0.20 0 1.1 3.2 nd +
Controls 501 0.40 0.76 3.0 2.0 7.82 9.07 Q 502 0.03 0.06 0.43 0.47 3.6 3.4 5.9 8.92 Q199 1.0 4.3 3.11 9.8 26.0 Q
nd indicates not determined
Patarroyo M. E.. et al. 1987. Vaccines 87:117
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AMINOACID SEQUENCE OF THE SYNTHETIC MALARIA
VACCINESPf66
Sl 2 3 4 5 6 7 8 9 10 1 2 3 4 5
- Gly- Asp- Glu- Leu- Glu- Ala - Glu- Thr - Gln- Asn- Val - Tyr - Ala - Ala
Pro16 7 8 9 20 1 2 3 4 5 6 7 8 9 30
- Asn- Ala - Asn- Pro- Tyr - Ser - Leu- Phe- Gln - Lys- Glu- Lys- Met- Val
1 2 3 4 5 6 7 8 9 40 1 2 3 4 5- Pro- Asn- Ala - Asn- Pro- Pro- Ala - Asn- Lys- Lys- Asn- Ala - Gly- Cys
lS
Cys
Leu
Patarroyo M. et al. 1988. Nature. 332:158
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PROYECTO MACRO-TUMACOPROYECTO LA TOLAPROYECTO RONDONIAPROYECTO �LA TE�PROYECTO ARIPAOPROYECTO LAS MAJADASPROYECTO RIO ROSARIO
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We conclude that SPf66 does not protectagainst clinical falciparum malaria and thatfurther efficacy trials are not warranted.
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COLFAVACThe COLombian FAlciparum VACcine
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0.7
0.6
0.5
0.4
0.3
0.2
0.1
00 15 30 45 60 90 120 180
MINUTES
BOUND PICOMOLESHIGH BINDING ACTIVITY PEPTIDES
0.2
0.15
0.05
0.1
00 15 30 45 60 90 120 180
MINUTES
BOUND PICOMOLESHIGH BINDING ACTIVITY PEPTIDES
MINUTES
MEDIUM BINDING ACTIVITY PEPTIDES
0 15 30 45 60 90 120 1800
BOUND PICOMOLES
0.05
0.1
0.15
0.2
0 15 30 45 60 90 120 180MINUTES
0
0.05
0.1
0.15
0.2BOUND PICOMOLES
LOW BINDING ACTIVITY PEPTIDES
Calvo M. et al. Peptide Research, 1991, 4, 324-333
SPECIFIC UPTAKE OF THE DIFFERENT PEPTIDES BY
HUMAN R.B.C.
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PRINCIPLES FOR VACCINE DEVELOPMENT
Ligand
Host Cell Parasite
Blocking Receptor- Ligand
Vaccine
Receptor
INDUCE IMMUNITY
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AMINO ACID SEQUENCE OF THE EBA-175 SYNTHETIC PEPTIDES
Peptide
number
1755 20 KARNEYDIKENEKFLDVYKE 39
1756 40 KFNELDKKKYGNVQKTDKKI 59
1757 60 FTFIENKLDILNNSKFNKRW 79
1758 80 KSYGTPDNIDKNMSLINKHN 99
1759 100 NEEMFNNNYQSFLSTSSLIK 119
1760 120 QNKYVPINAVRVSRILSFLD 139
1761 140 SRINNGRNTSSNNEVLSNCR 159
1762 160 EKRKGMKWDCKKKNDRSNYV 179
1763 180 CIPDRRIQLCIVNLSIIKTY 199
1764 200 TKETMKDHFIEASKKESQLL 219
1765 220 LKKNDNKYNSKFCNDLKNSF 239
1766 240 LDYGHLAMGNDMDFGGYSTK 259
1767 260 AENKIQEVFKGAHGEISEHK 279
1768 280 IKNFRKEWWNEFREKLWEAM 299
1769 300 LSEHKNNINNCKNIPQEELQ 319
1770 320 ITQWIKEWHGEFLLERDNRS 339
1771 340 KLPKSKCKNNTLYEACEKEC 359
1772 360 IDPCMKYRDWIIRSKFEWHT 379
1773 380 LSKEYETQKVPKENAENYLI 399
1774 400 KISENKNDAKVSLLLNNCDA 419
1775 420 EYSKYCDCKHTTTLVKSVLN 439
1776 440 GNDNTIKEKREHIDLDDFSK 459
1777 460 FGCDKNSVDTNTKVWECKNP 479
1778 480 YILSTKDVCVPPRRQELCLG 499
1779 500 NIDRIYDKNLLMIKEHILAI 519
1780 520 AIYESRILKRKYKNKDDKEV 539
1781 540 CKIINKTFADIRDIIGGTDY 559
1782 560 WNDLSNRKLVGKINTNSKYV 579
1783 580 HRNKKNDKLFRDEWWKVIKK 599
1784 600 DVWNVISWVFKDKTVCKEDD 619
1785 620 IENIPQFFRWFSEWGDDYCQ 639
1786 640 DKTKMIETLKVECKEKPCED 659
1787 660 DNCKSKCNSYKEWISKKKEE 679
1788 680 YNKQAKQYQEYQKGNNYKMY 699
1789 700 SEFKSIKPEVYLKKYSEKCS 719
1790 720 NLNFEDEFKEELHSDYKNKC 739
Peptidenumber
1791 740 TMCPEVKDVPISIIRNNEQT 759
1792 760 SQEAVPEENTEIAHRTETPS 779
1793 780 ISEGPKGNEQKERDDDSLSK 799
1794 800 ISVSPENSRPETDAKDTSNL 819
1795 820 LKLKGDVDISMPKAVIGSSP 839
1796 840 NDNINVTEQGDNISGVNSKP 859
1797 860 LSDDVRPDKKELEDQNSDES 879
1798 880 EETVVNHISKSPSINNGDDS 899
1799 900 GSGSATVSESSSSNTGLSID 919
1800 920 DDRNGDTFVRTQDTANTEDV 939
1801 940 IRKENADKDEDEKGADEERH 959
1802 960 STSESLSSPEEKMLTDNEGG 979
1803 980 NSLNHEEVKEHTSNSDNVQQ 999
1804 1000 SGGIVNMNVEKELKDTLENP 1019
1805 1020 SSSLDEGKAHEELSEPNLSS 1039
1806 1040 DQDMSNTPGPLDNTSEETTE 1059
1807 1060 RISNNEYKVNEREDERTLTK 1079
1808 1080 EYEDIVLKSHMNRESDDGEL 1099
1809 1100 YDENSDLSTVNDESEDAEAK 1119
1810 1120 MKGNDTSEMSHNSSQHIESD 1139
1811 1140 QQKNDMKTVGDLGTTHVQNE 1159
1812 1160 ISVPVTGEIDEKLRESKESK 1179
1813 1180 IHKAEEERLSHTDIHKINPE 1199
1814 1200 DRNSNTLHLKDIRNEENERH 1219
1815 1220 LTNQNINISQERDLQKHGFH 1239
1816 1240 TMNNLHGDGVSERSQINHSH 1259
1817 1260 HGNRQDRGGNSGNVLNMRSN 1279
1818 1280 NNNFNNIPSRYNLYDKKLDL 1299
1819 1300 DLYENRNDSTTKELIKKLAE 1319
1820 1320 INKCENEISVKYCDHMIHEE 1339
1821 1340 IPLKTCTKEKTRNLCCAVSD 1359
1822 1360 YCMSYFTYDSEEYYNCTKRE 1379
1823 1380 FDDPSYTCFRKEAFSSMIFK 1399
1824 1400 FLITNKIYYYFYTYKTAKVT 1419
1825 1420 IKKINFSLIFFFFFSF 1435
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PEPTIDE RBC BINDING BEHAVIOURPEPTIDE RBC BINDING BEHAVIOUR
AddedAdded PeptidePeptide
Peptide Binding activity is the curve’s specific slope
0
0.055
0.115
0 0.5 1 0 0.5 1
1585 EBA P. 4
0 0.5 1
1795
Total Binding Non-specific Binding Specífic Binding
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Peptide 15 30 45 6015111512151315141516151715181519152015211522152315241525152683K15271528152915401541154215431544154515461547154815491550155115521553155415551556155715581559
30K 156015611562 nd15631564156515661567 nd15691570157115721573157438K1575157615771578157915801581158215831584 nd1585158615871588
33K1589159015911592159315941595 nd159615971598159919K 16001601
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15 30 454042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4063
4064
4065
2.0
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Peptide Sequence26327 1 LINIETEMKHKQKQLINKMNY 2026328 21 DIEKDNITDQYMHDVQQNIFY 4026329 41 EPITLKMNEYNTLLNDNHNN 6026330 61 NINNEHQFNHLNSLHTKIFSY 8026331 81 HNYNKEQQQEYITNIMQRID 10026332 101 VFINDLDTYQYEYYFYEWNQ 12026333 121 EYKQIDKNKINQHINNIKNN 14026334 141 LIHVKKQFEHTLENIKNNENY 16026335 161 IFDNIQLKKKDIDDIIININY 18026336 181 NTKETYLKELNKKKMLQNKK 20026337 201 KVDEKSEINNHHTLQHDNQNY 22026338 221 VEQKNKIKDHNLITKPNNNSY 24026339 241 SEESHQNEQMKEQNKNILEKY 26026340 261 QTRNIKPHHVHNHNHNHNHNY 28026341 281 HNQNQNQKDSTKLQEQDISTY 30026342 301 HKLHNTIHEQQSKDNHQGNRY 32026343 321 EKKQKNGNHERMYFASGIVV 34026344 341 SILFLSSLGFVINSKNNKQEY 36026345 361 YDKEQEKQQQNDFVCDNNKM 38026346 381 DDKSTQKYGRNQEEVMEISF 40026347 386 QKYGRNQEEVMEISFDNDYI 405
Normocyte Binding Protein PfNBP-1 Binding Activity 1 % 2%
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Sequence
4313 134 DAEVAGTQYRLPSGKCPVFG 153
4314 154 KG I I I ENSNTTFLTPVATGNY173
4315 174 QYLKDGGFAFPPTEPLMSPM 193
4316 194 TLDEMRHFYKDNKYVKNLDE 113
4317 214 LTLCSRHAGNMI PDNDKNSNY233
4318 234 YKYPAVYDDKDKKCH I LY I A 253
4319 254 AQENNGPRYCNKDESKRNSM 273
4320 274 FCFRPAKD I SFQNYTYLSKN 293
4321 294 VVDNWEKVCPRKNLQNAKFGY313
4322 314 LWVDGNCED I PHVNEFSA I DY333
4323 334 LFECNKLVFELSASDQPKQY 353
4324 354 EQHLTDYEK I KEGFKNKNAS 373
4325 374 MI KSAFLPTGAFKADRYKSH 393
4326 394 GKGYNWGNYNTETQKCE I FN 413
4327 414 VKPTCL I NNSSY I ATTALSH 433
4328 434 P I EVEHNFPCSLYKNE I MKE 453
4329 454 I ERESKR I KLNDNDDEGNKK 473
4330 474 I I APR I F I SDDKDSLKCPCDY493
4331 494 PE I VSNSTCNFFVCKCVERRY513
4332 514 AEVTSNNEVVVKEEYKDEYA 533
4333 534 D I PEHKPTYDKMK I I I ASSA 553
4334 554 AVAVLAT I LMVYLYKRKGNA 573
4335 574 EKYDKMDEPQHYGKSNSRND 593
4336 594 EMLDPEASFWGEEKRASHTTY613
4337 603 WGEEKRASHTTPVLMEKPYY 622
4307 14 EFTYMI NFGRGQNYWEHPYQ 33
4308 34 KSDVYHP I NEHREHPKEYQY 53
4309 54 PLHQEHTYQQEDSGEDENTL 73
4310 74 QHAYP I DHEGAEPAPQEQNL 93
4311 94 FSS I E I VERSNYMGNPWTEY 113
114 MAKYD I EEVHGSG I RVDLGE 1334312
Peptide 2.0FIDICFIDIC
AMA-1
Peptide Kd (nM)
4313 120 ± 124315 120 ± 104316 150 ± 144322 700 ± 214325 100 ± 094328 140 ± 11
Urquiza M., et al., 2001, Vaccine, 19: 508
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Peptide
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FIDICFIDIC
Bozedech Z et al August 18 2003. PLOS Biology 1, 001
PHASEOGRAM OF PUTATIVE VACCINE TARGETS
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C : CONSERVED
V: VARIABLE
High RBC binding activity peptides
FIDICFIDIC
PROTEIN C V Reference
MSP1 3 6 Urquiza M. et. al . 1996. Parasite Immunology . 18: 515-526
RESA 2 − Vera R. et al . 2000. Vaccine. 18: 1289-1293
SERA 6 1 Puentes A. et. al . 2000. Parasitology International. 49: 105-117
MSA2 1 2 Ocampo M. et. al . J. Peptide Research. 55: 216-233
EBA175 6 − Rodríguez L.E et. al. 2000. Parasitology. 120: 225-235
GBP130 1 − Suárez J. et. al . 2000. Mem. Inst. Oswaldo Cruz . 95: 495-501
HRP I, II, II 3 1 López R. et a l. 2000. Acta Tropica. 75: 349-359
ABRA 5 − Curtidor H. et. al . 2001. Vaccine. 19: 4496-4504
AMA1 4 3 Urquiza M. et. al . 2001. Vaccine. 19: 508-513
EBA140 6 − Rodríguez L.E.. et. al . 2003. J. Peptide Research. 62: 175-184
NBP1 2 − Valbuena J. et al . 2003. Peptides . 24: 1007-1014
MSP8 5 − Puentes A. et. al. 2003. Peptides .24: 1015-1023
MAEBL 9 − Ocampo M. et al . 2004. Biochem. Biophys. Res. Comm. 315: 319-329
RAP2 4 − López R. et al. 2004. Biochemie . 86: 1-6
RBP2 Ha/Hb 9 3 Ocampo M. et. al . 2004. Parasitol. Int. 53: 77-88
RAP1 4 − Curtidor H. et. al . 2004. Vaccine . 22: 1054-1062
EBA160 5 − Valbuena J. et al. 2004. Biochem. Biophys. Res. Comm . 321: 835-844
CLAG3 5 − Ocampo M. et. al. 2005. Proteins Science . 14: 504-513
EBL1 5 − Curtidor H. et. al. 2005. Protein Science . 14: 464-473
JESEBL 5 − Vera R. et al . 2004. Biochemie. In press
STEVOR − 3 García J. et al. 2004. Peptides. In press
MSP10 3 − Puentes A. et al . 2004. Biochemie. In press
MSP3 3 − Rodríguez L.E. et. al. 2004. Submitted to Protein Science
SORTILIN 6 − Vera R. et al. 2004. Submitted to Biochemistry
RESA-LIKE 3 − Rodríguez L.E. et. al. 2004. Submitted to J. Int. Parasitol.
TryThrA 4 − Curtidor H. et. al. 2004. Submitted to Chembiochem
HAP 2 − Valbuena J. et. al . 2004. Submitted to Biol. Chem.
MSP6 2 1 López R. et al. 2004. Submitted to Peptides
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1. Plasmodia (falciparum & vivax) use CONSERVED as well as VARIABLE sequences to bind to host cells.
Synthetic vaccines - Emergingprinciples
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ANTIGENICITYSTUDIES
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Aotus Monkeys develop resistance toreinfection after being infected severaltimes with 5 to 500 X 106 P. falciparum FVO infected erythrocytes and treated withchloroquine
HYPERIMMUNE MONKEYS
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HIPERIMMUNE FA CONTROL NAIVE
Peptide1228 1522 1218 1220 1487 1464 1224 1228 1582 1599 1538 1564 15 30 45
404240434044404540464047
40484049
4050
4051405240534054
40554056405740584059
40604061406340644065
AOTUS ABS AGAINST MSP-2 PEPTIDES Vs. BINDING ACTIVITY
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ACUTE RECOVERED EXPOSED
MSA2 1X 2X 3X 1X 2X 3X BINDING
Peptide F03
F10
F18
F19
F47
F35
F51
F68
F82
F13
F34
F52
F08
F31
F60
F76
F84
F02
F77
F40
F61
F62
F45
F50
F01
15 30 45
4042
4043
4044
4045
4046
4047 ND>
4048
4049
4050
4051
4052
4053
4054
4055
4056
83K 4057
4058
4059
4060
4061
4063
4064
4065
HUMAN ABS AGAINST MSP-2 PEPTIDES Vs. BINDING ACTIVITY
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HUMAN Abs AGAINST EBA-175 PEPTIDES vs. BINDING
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Plasmodia (falciparum & vivax) use CONSERVED as wellas VARIABLE sequences to bind to host cells.
1.
Synthetic vaccines - Emergingprinciples
CONSERVED binding sequences are NOT antigenic, but VARIABLE sequences are
2.
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IMMUNOGENICITY AND
PROTECTION STUDIES
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PROTOCOL FOR IMMUNIZATION OFAOTUS MONKEYS
Monkeys were immunized with 125 µgr of peptidein FA on days 1, 20, and 40, bled on day 60 for
immunological studies, and challenge on day 65.
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EBA 175 Kd
GROUP H 1678 1692 1713 1730 17371758 0 0 0 200 01º779 0 0 0 0 01783 0 100 0 100 0
GROUP I 1679 1693 1714 1731 1738EBA 175 Kd 1814 100 200 12800 6400 6400VARIABLE 1815 12800 25600 51200 12800 1600
1783 0 0 0 800 0
GROUP J 1681 1694 1715 1732 17391758 0 0 0 400 100
EBA 175 Kd 1779 0 0 0 0 0C&V 1783 0 0 0 800 0
1814 200 100 100 100 01815 25600 204800 25600 3200 6400
AOTUS SERA REACTIVITY AGAINST ORIGINAL
EBA-175 IMMUNIZING PEPTIDES
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AOTUS MONKEYS IMMUNIZED WITH EBA UNMODIFIED PEPTIDES
GROUP H: IMMUNIZED WITH CONSERVED HBAP1758, 1779, 1783.
0
5
10
5 7 9
11 13 15
% P
AR
ASI
TEM
IA
1678
1692
1713
1730
1737
DAYS
GRUPO I: IMMUNIZED WITH VARIABLE HBAP1814, 1815.
0
5
10
5 7 9
11 13 15
% P
AR
ASI
TEM
IA
1679
1693
1714
1731
1738
DAYS
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AOTUS MONKEYS IMMUNIZED WITH MSP-1
UNMODIFIED PEPTIDE MIXTURES
1513, 1517, 1522
0
5
10
5 7 9 11 13 15
% P
AR
ASI
TAEM
IA
1656
1659
1666
1670
1682
DAYS
GROUP B: IMMUNIZED WITH PEPTIDES FROM 38 Kd : 1577, 1582.
0
5
10
5 7 9 11 13 15
% P
AR
ASI
TAEM
IA
1655
1657
1660
1667
1683
DAYS
GROUP D: IMMUNIZED WITH PEPTIDES FROM 19 Kd:
1598, 1599.
0
5
10
5 7 9 11 13 15
% P
AR
ASI
TAEM
IA
1662
1669
1673
1680
1685
DAYS
GROUP A: IMMUNIZED WITH PEPTIDES FROM 83 Kd :
1585, 1590, 4017.
0
5
10
5 7 9 11 13 15
% P
AR
ASI
TAEM
IA 1658
1661
1668
1672
1684
DAYS
GROUP C: IMMUNIZED WITH PEPTIDES FROM 33 Kd:
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MAPS USED IN THE MONKEY TRIALS
MAP 5A 1512 ( H E S Y Q E L V K K L E A L E D A V L T ) 4 - P3C
MAP 5B 1513 ( G Y S L F QK E KM V L N E ) 4 - P3C
MAP 6A 1522 ( Q I P F N L K I R A N E L D V L K K L V ) 4 - P3C
MAP 6B 1523 ( F G Y R K P L D N I K D N V G KM E D Y ) 4 - P3C
MAP 8B 1584 ( L GQ V V T G E A V T P S V I D N I L S K I E N E Y ) 4 - P3C
MAP 9B 1585 ( D V I Y L K P L AG V Y R S L K KQ I E ) 4 - P3C
MAP 11A 1596 ( I A D L S T D Y N H N N L L T K F L S T G ) 4 - P3C
MAP 11B 1597x ( M V F E N L A K T V L S N L L D N L QGM L N I S QHQ ) 4 - P3C
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AOTUS MONKEYS IMMUNIZED WITH MAP MIXTURES
Days
11 14 17 20
%
1985
1994
2003
2005
2010
2019
2023
MAPS 3X
0
10
5 8
0
10
5 7 9 11 13 15 17 19Days
%1989
1995
1997
2013
2020
MAPS 5X
0
10
5 7 9 11 13 15 17 19
Days
%
1987
2004
2168
2169
2212
CONTROLS
Days
%
1991
2007
2035
2025
0
10
5 7 9 13 15 17 1911
CONTROLS
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Aminoacid Sequence of the MSP-1,EBA-175, GBP-130, and MSP-2 Expanded Peptides
HHII
JJKK
ML
ABCDEG
Patarroyo M. E. et al. Summitted to J. Structural Biology
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AOTUS SERA REACTIVITY AGAINSTEBA-175 EXPANDED PEPTIDES
1845 1874 1903 1919 19341757 25600 3200 0 12800 01758 0 100 0 100 01814 400 100 100 200 8001815 51200 6400 6400 25600 6400
GROUP F
18731843 1902 1912 19171779 0 0 0 0 0 01780 800 0 6400 0 100 16001782 12800 800 3200 12800 12800 400
0 0 100 100 200 100
GROUP E1918
1783
Patarroyo M. E. et al. Summitted to J. Structural Biology
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GROUP A
0
5
10
5 7 9 11 13 15 17 19
DAYS
%
18341838185318621901
GROUP B
0
5
10
5 7 9 11 13 15 17 19
DAYS
%
1837185618651904
GROUP D
0
5
105 7 9 11 13 15 17 19
DAYS
%
1857187219061916
GROUP C
0
5
10
5 7 9 11 13 15 17 19
DAYS
%
18411854187919051910
GROUP E
0
5
10
%
184318731902191219171918
5 7 9 11 13 15 17 19
DAYS
GROUP F
%
18451874190319191934
0
5
10
5 7 9 11 13 15 17 19
DAYS
GROUP G
0
5
10
5 7 9 11 13 15 17 19
DAYS
%
184718761907192019251944
AOTUS MONKEYS IMMUNIZED WITH MSP-1 EXPANDED PEPTIDES
Patarroyo M. E. et al. Summitted to J. Structural Biology
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IMMUNOGENICITY OF THEBINDING PEPTIDES IN RABBITS
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IMMUNOGENICITY OF THECONSERVED BINDING PEPTIDES
For the production of Mo Abs groups of4 Balb/c mice were immunized i.p. 5x with 15 µgr of the individual MSP1 (1513, 1522, 1585, 5501) EBA - 175 (1758, 1779, 1783, 1818) GBP - 130 (2220) or MSP2 (4044) conservedpeptides. After the 3rd immunizationNOT EVEN A SINGLE MOUSE, showedantibodies against the correspondingimmunizing peptide, as assessed byELISA western blots or IFA. The samewas also true for mice of the AKR andDBA strains.
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Synthetic vaccines - Emergingprinciples
Plasmodia (falciparum & vivax) use CONSERVED as wellas VARIABLE sequences to bind to host cells.
1.
CONSERVED binding sequences are NOT antigenic, butVARIABLE sequences are
2.
3. CONSERVED binding sequences are NOT immunogenic in ANY of the testedspecies when administered as monomers, polymerized, associatedwith T helper epitopes or presented as MAPs. While VARIABLE sequences can be immunogenic they are strain-specific
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AN EMPIRICAL APPROACH
Changing some residues.
To convert putative alpha helicesinto beta II or beta VII turns.
To modify putative aromaticcomposition.
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STRUCTURALLY REPLACED ANALOGUES OF THE 1513
PEPTIDE
TGYSLHQKEKMVLNE34887TGHSLFQKEKMVLNE24865TGMSLPQKEKMVLNE14863
TGYSLFQKEKMVLNEGTSGTA1513
SEQUENCEGROUPPEPTIDE
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AOTUS SERA REACTIVITY AGAINST THE STRUCTURALLY
REPLACED IMMUNIZING PEPTIDES
GROUP 1 2024 2027 2033 2042 20811513 0 0 0 0 04863 0 0 0 0 04865 0 0 0 0 1004867 0 0 0 0 0
GROUP 2 2028 2034 2039 2043 20461513 800 0 0 1600 4004863 0 0 0 25600 04865 800 100 0 3200 2004867 0 0 0 6400 6400
GROUP 3 2026 2029 2036 2044 20491513 0 200 0 1600 1004863 0 100 0 6400 04865 200 100 0 6400 04867 200 200 200 12800 0
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DAYS
%
20282034203920432046
GROUP 2
0
5
10
5 7 9 11 13 15 17 19
GROUP 1
%
189920242027203320422081
0
5
105 7 9 11 13 15 17 19 DAYS
GROUP 3
DAYS
%
20262029203620442049
0
5
10
5 7 9 11 13 15 17 19
AOTUS MONKEYS IMMUNIZED WITH MSP-1 STRUCTURALLY MODIFIED PEPTIDES
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STRUCTURALLY REPLACED ANALOGUES OF THE 1598M
PEPTIDE
FPNTIISKLIEGKPQDMPNPSQHQ64879
FPNTIISKLIEGKFQDMPNPSQHQ54873
MPNPIISKLIEGKFQDMLNISQHQ44871
FPNTIISKLIEGKFQDMLNISQHQ144847
SEQUENCEGROUPPEPTIDE
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GROUP 4 1980 2037 2058 2063 2066 21094869 100 200 200 12800 51200 2004871 1600 102400 800 102400 102400 256004873 100 ND 0 ND ND 2004879 3200 12800 6400 51200 6400 3200
GROUP 5 2032 2045 2051 2056 2059 20474869 100 3200 1600 51200 3200 2004871 200 800 200 1600 200 256004873 200 ND ND ND ND ND4879 51200 51200 12800 12800 25600 12800
GROUP 6 2053 2061 2068 2072 20774869 51200 102400 12800 25600 1024004871 25600 51200 3200 6400 128004873 ND ND ND ND ND4879 51200 25600 800 102400 204800
GROUP 14 2087 2092 2096 2102 2108 21174869 0 0 0 0 0 04871 0 0 0 0 0 04873 0 0 0 0 0 04879 0 0 0 0 0 0
AOTUS SERA REACTIVITY AGAINST THE STRUCTURALLY
REPLACED IMMUNIZING PEPTIDES
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GROUP 5
0
5
10
%
20322045205120562059
5 7 9 1 1 13 15 17 19
DAYS
GROUP 4
0
5
10
%
198020372058206320662109
5 7 9 11 13 15 17 19
DAYS
GROUP 14
0
5
10
208720922096210221082117
DAYS
%5 7 9 11 13 15 17 19
GROUP 6
0
5
10
%
204720532061206820722077
DAYS
5 7 9 11 13 15 17 19
AOTUS MONKEYS IMMUNIZED WITH MSP-1 STRUCTURALLY
MODIFIED PEPTIDES
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ANALOGUES OF PEPTIDE 1513FOR BINDING ASSAYS
G Y K E K M V L N E G TG Y G E K M V L N E G TG Y K G K M V L N E G TG Y K E G M V L N E G TG Y K E K G V L N E G T
G Y K E K M V L N E G TG G K E K M V L N E G TG Y K E K M V L N E G TG Y K E K M V L N E G TG Y K E K M V L N E G T
G Y K E K M G L N E G TG Y K E K M V G N E G TG Y K E K M V L G E G TG Y K E K M V L N G G TG Y K E K M V L N E G GG Y K E K M V L N E G TG Y K E K M V L N E G TG Y K E K M V L N E G T
GQQQQ
QQQQQ
QQQQQQQQ
S L FS L FS L FS L FS L F
S L FS L FG L FS G FS L G
S L FS L FS L FS L FS L FS L FS L FS L F
AAAAA
AAAAA
AAAAAAAG
S G TS G TS G TS G TS G T
S G TS G TS G TS G TS G T
S G TS G TS G TS G TS G TG G TS G GS G T
YYYYY
YYYYY
YYYYYYYY
51505151515251535154
15135146514751485149
51555156515751585159516051615162
Urquiza M. et al. 1996. Parasite Immunology 18:515-526
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BINDING OF 1513 PEPTIDE ANALOGUES TO RBCs
1513
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
Y S L F Q K E K M V L N E T S T A
Thou
sand
sTh
ousa
nds
Thou
sand
s
Urquiza M. et al. 1996. Parasite Immunology 18:515-526
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SPECIFICALLY REPLACED ANALOGUES OF THE 1585
PEPTIDE TO IMMUNIZE AOTUS MONKEYS
EVLYLKPLAGVYRSLKKQLE
PEPTIDE SEQUENCE
1585
5187
5190
EVLYGKPLAGVYRSLKKQLE
EVLYLKPGAGVYRSLKKQLE
Espejo F. et al. 2001. Angewandte Chemie Int. Ed. 40:2631
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AOTUS MONKEYS IMMUNIZED WITH 1585SPECIFICALLY MODIFIED PEPTIDES
GROUP 7
0
5
10
5 7 9 11 13 15 17 19 21
2232 2359 2387 2418
GROUP 8
0
5
10
5 7 9 11 13 15 17 19 21
2256 2360 2388 2423
Espejo F. et al. 2001. Angewandte Chemie Int. Ed. 40:2631
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SPECIFICALLY REPLACED ANALOGUES OF THE 5501
PEPTIDE TO IMMUNIZE AOTUS MONKEYS
PEPTIDE SEQUENCE
5501
5503
5512
5513
5516
MLNISQHQCVKKQCPQNSY
MGNISQHQCVKKQCPQNSY
MLNISQHQCVGKQCPQNSY
MLNISQHQCVKGQCPQNSY
MLNISQHQCVKKQCGQNSY
Torres M. H. et al. 2003. European J. Biochemistry 270:3946
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AOTUS MONKEYS IMMUNIZED WITH 5501 SPECIFICALLY
MODIFIED PEPTIDES
GROUP 11
0
5
10
15
20
5 7 9 11 13 15 17 19 21
2297 2370 2428
GROUP 12
0
5
10
15
20
5 7 9 11 13 15 17 19 21
2298 2372 2392 2430
GROUP 9
0
5
10
15
20
5 7 9 11 13 15 17 19 21
2273 2361 2389 2424
0
5
10
15
20
5 7 9 11 13 15 17 19 21
2282 2390 2422 2467
GROUP 10
Torres M. H. et al. 2003. European J. Biochemistry 270:3946
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Plasmodia (falciparum & vivax) use CONSERVED as wellas VARIABLE sequences to bind to host cells.
1.
Synthetic vaccines - Emergingprinciples
CONSERVED binding sequences are NOT antigenic, but VARIABLE sequences are
2.
CONSERVED binding sequences are NOT immuno-genicin ANY of the tested species when administe-red as monomers, polymerized, associated with T helperepitopes or presented as MAPs. WhileVARIABLEsequences can be immunogenic they are strain-specific
3.
To overcome this problem the criticalcontact residues in the bindinginteraction have to be identified andchanged
4.
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Polymerizedpeptide Nr. II 15 III 20 PROT1585 E V L Y L KP L AG V Y R S L K K Q L E 0 0 0/55187 - - - - GKP A - - - - S - - - - - - ND. 1(320) 1/45188 - - - - L GP - A - - - - S - - - - - - ND. 1(320) 1/45189 - - - - L KG - A - - - - S - - - - - - ND. 1(1280) 1/46187 - - - - L KPGA - - - S - - - - - - 0 0 06177 - - - - L KP - A - - - - G - - - - - - 0 0 0
13450 - - - - L L D A - - - - S - - - - - - 2(2560) 1(2560) 2/422806 - L L D - A - - - - S - - - - 3(1280) 1(1280) 2/9
10014 - - - - HV P - A - - - - S - - - - - - 2(640) 1(640) 2/422768 - HL P - A - - - - A - - - - 0 1(5120) 1/10
11860 - - - - HMP - G - - - - A - - - - - - 1(1280) 1(2560) 2/622770 - HL P - G - - - - A - - - - 1(1280) 1(1280) 2/9
13454 - - - - L MS - A - - - - S - - - - - - 0 0 0/514448 - - - - HMD - G - - - - V - - - - - - 0 0 0/314496 - - - - HMD - S - - - - V - - - - - - 0 0 0/413724 - - - - HV T - S - - - - S - - - - - - 0 0 0/512896 - - - - HV P - S - - - - A - - - - - - 0 0 0/512898 - - - - HV P - G - - - - A - - - - - - 0 0 0/515954 - - - - L MD - A - - - - S - - - - - - 0 0 0/315956 - - - - L MP - A - - - - S - - - - - - 0 0 0/415958 - - - - L KD - S - - - - S - - - - - - 0 0 0/615960 - - - - L MD S - - - - S - - - - - - 0 0 0/413728 - - - - NL D - G - - - - S - - - - - - 0 0 0/513452 - - - - L I D - A - - - - S - - - - - - 0 0 0/5
CONTROLS 0 0 0/50
IFA TITERS ≥320Peptide Sequence
GROUP C
GROUPB
GROUP A
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IFA IFA No. ofPolymerized ≥1:160 ≥1:160 protectedpeptide No. Peptide Sequence Post 2nd Post 3rd monkeys Group
4325 M I K S A F L P T G A F K A D R Y K S H 0 0 0/6 13486 A S D S P 3(2560) 2(1280) 2/5 A15516 A H M S W 1(1280) 1(160) 1/4 A20034 A M 2(320) 1(160) 2/8 A20032 A 1(160) 1(160) 1/8 A22784 V G D S P 1(2560) ND 1/10 A23404 V S D M S 2(320) ND 1/10 A23406 V S D D M S 1(320) ND 1/10 A14518 V G H S P W 1(320) 0 0/3 B14520 V G H M S P 2(640) 0 0/3 B17934 A S H V M S 2(320) 0 0/7 B17936 A S H V M S P W 2(640) 0 0/5 B9192 G 0 0 0/5 C9196 G 0 0 0/5 C10100 R G 0 0 0/5 C10102 F G 0 0 0/5 C10104 G T 0 0 0/5 C12708 W 0 0 ND C15512 A S W 0 0 0/4 C15510 A S 0 0 0/4 C16000 S 0 0 0/5 C16008 H P 0 0 0/4 C16002 S H 0 0 0/5 C16004 S H P 0 0 0/5 C16006 S P 0 0 0/5 C17932 A S D S P W 0 0 0/7 C23178 V S D G 0 ND 0/9 C23774 V S H D M S 0 ND 0/9 C22424 S S H V P 0 ND 0/8 C23000 V D S P 0 ND 0/7 C
CONTROLS 0/60 0/60 0/60
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IFA IFA No. ofPolymerized ≥1:320 ≥1:320 protectedpeptide No. Peptide Sequence Post 2nd Post 3rd monkeys Group
6737 D N I L V K M F K T N E N N D K S E L I 0/10 0/10 0/1012748 * V I * 1(2560) 1(2560) 1/4 A13840 * V I M * 3(640) 1(320) 1/5 A22834 * H V I * 1(2560) ND 2/9 A22796 * V I * 1(5120) ND 2/9 A13844 * H V I M * 1(320) 0/6 1/6 A24096 * H V I M * 1(5120) ND 2/8 A14094 * I V I M * 1(320) 2(320) 0/5 B14096 * H R V I M * 3(640) 1(640) 0/4 B24308 * H P M * 1(640) ND 0/8 B9228 * G * 0/5 0/5 0/5 C9230 * G * 0/5 0/5 0/5 C9234 * G * 0/5 0/5 0/5 C10154 * M I * 0/5 0/5 0/5 C10152 * M L * 0/5 ND 0/5 C10150 * M F * 0/5 0/5 0/5 C16016 * V D * 0/5 0/5 0/5 C17970 * H I * 0/8 0/7 0/7 C22460 * I * 0/10 0/10 0/10 C10148 * R A * 0/5 0/5 0/5 C12754 * H V V I * 0/5 0/5 ND C23418 * H I M * 0/10 ND 0/10 C24392 * H A M * 0/6 ND 0/6 C
CONTROLS 0/50 0/50 0/50
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Synthetic vaccines - Emergingprinciples
Plasmodia (falciparum & vivax) use CONSERVED as wellas VARIABLE sequences to bind to host cells.
1.
CONSERVED binding sequences are NOT antigenic, but VARIABLE sequences are
2.
CONSERVED binding sequences are NOT immuno-genicin ANY of the tested species when administe-red as monomers, polymerized, associated with T helperepitopes or presented as MAPs. While VARIABLE sequences can be immunogenic they are strain-specific
3.
To overcome this problem the critical contact residues in the binding interaction have to be identified and changed
4.
The critical contact residues have to be changed for aminoacids that ARE NOT commonly used during the mutationalprocess in the variable sequences
5.
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Synthetic vaccines - Emergingprinciples
Plasmodia (falciparum & vivax) use CONSERVED as wellas VARIABLE sequences to bind to host cells.
1.
CONSERVED binding sequences are NOT antigenic, but VARIABLE sequences are
2.
CONSERVED binding sequences are NOT immuno-genicin ANY of the tested species when administe-red as monomers, polymerized, associated with T helperepitopes or presented as MAPs. While VARIABLE sequences can be immunogenic they are strain-specific
3.
To overcome this problem the critical contact residues in the binding interaction have to be identified and changed
4.
The critical contact residues have to be changed foraminoacids that ARE NOT commonly used during themutational process in the variable sequences
5.
6.Physicochemical characteristics such as size, charge and volume have to be considered. Therefore A S; P D; F R; H L, K M; N I; Q E; C T; Y W; can be exchanged. G and C have special properties.
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PROTEINS:Structure,Function,and Genetics 50:400 �409 (2003)
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The MHC molecules
the peptide and
the T cell receptor
complex
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P1P9
P4
P6
Class-II Molecule
24.10Å
Stern J. et al., 1994 Nature 368,215
P1P9
P4
P6
Class-II Molecule
24.10Å
Stern J. et al., 1994 Nature 368,215
P1P9
P4
P6
Class-II Molecule
24.10Å
Stern J. et al., 1994 Nature 368,215
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Patarroyo M. E. et al. 2004. ChemBioChem. 5: 1588
E
J
G
E2
G2
J2
19.0 Å 22.2 Å
16.9 Å 20.2 Å
14.3 Å 21.9 Å
E
J
G
E2
G2
J2
19.0 Å 22.2 Å
16.9 Å 20.2 Å
14.3 Å 21.9 Å
B B1
16.4 Å 20.3 Å
17.7 Å 19.6 Å
B B1
16.4 Å 20.3 Å
17.7 Å 19.6 Å
1815 24292
4044 10008
13446
118601585
1522
Native ProtectiveProtective
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13450 15484
Inmunogenic andProtection inducers
Short-lived antibodiesinducers
10000
20.2Å
Y4
D7A9
Y12
13.3Å
Y12
L15 K17
E20
23230
20.0Å
W7
A10
K12
L15
21742
12.7Å
Y9
A12 K14
H17
9782
22.1Å
G11D14 G16
L19
15474
15.2Å
I11
D14 H16
L19
22834
21.0 Å
I11
N14K16
L19
14096
14.2 Å
I11
N14 K16
L19
13492
24.7Å
Y7
S10N12
A15
18.9 Å
V4 Y7 Y9 N12
Patarroyo M. E. et al. 2005. Biochemistry In press
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Salazar L. M. et al. 2004. Biochem. Biophys. R. Comun . 322:119
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Synthetic vaccines - Emergingprinciples
7. There must be a 23.5 Å + 3.5 Å distancebetween those residues fitting intoPockets 1-9 of Class II molecules.
Plasmodia (falciparum & vivax) use CONSERVED as wellas VARIABLE sequences to bind to host cells.
1.
CONSERVED binding sequences are NOT antigenic, but VARIABLE sequences are
2.
CONSERVED binding sequences are NOT immuno-genicin ANY of the tested species when administe-red as monomers, polymerized, associated with T helperepitopes or presented as MAPs. While VARIABLE sequences can be immunogenic they are strain-specific
3.
To overcome this problem the critical contact residues in the binding interaction have to be identified and changed
4.
The critical contact residues have to be changed foraminoacids that ARE NOT commonly used during themutational process in the variable sequences
5.
6. Physicochemical characteristics such as size, charge andvolume have to be considered. Therefore A S; P D; F R; H L, K M; N I; Q E; C T; Y W; can be exchanged. G and C have special properties.
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13450
24292
24224
23230
10014
22834
14044
9782 13492
24112
22814
10022
20.2 Å
19.6 Å
20.3 Å
20.0 Å
22.1 Å
20.9 Å
21.0 Å
20.2 Å
24.7 Å
26.5 Å
25.3 Å
25.0 Å
DRβ1*0301 DRβ1*1101 DRβ1*0401
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Immunogenic and Protection Inducer
Immunogenic and NON-Protection Inducer
Patarroyo M. E. et al. 2004, Submitted to Science
13494
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Patarroyo M. E. et al. 2005. Submitted to Angewandte Chemie
13766
13492
13494
20034 20032
24922 24296
14044 14048
10022
24148 23754
24166 23390
21.28Å24.73Å
20.62Å25.50Å
20.12Å25.23Å
17.90Å23.10Å
19.27Å25.04Å
19.29Å25.10Å
20.30Å24.90Å
ImmunogenicNON- Protection inducer
Immunogenicand Protection inducer
13766
13492
13494
20034 20032
24922 24296
14044 14048
10022
24148 23754
24166 23390
21.28Å24.73Å
20.62Å25.50Å
20.12Å25.23Å
17.90Å23.10Å
19.27Å25.04Å
19.29Å25.10Å
20.30Å24.90Å
ImmunogenicNON- Protection inducer
Immunogenicand Protection inducer
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Synthetic vaccines - Emergingprinciples
7. There must be a 23.5 Å + 3.5 Å distance between thoseresidues fitting into Pockets 1-9 of Class II molecules.
Plasmodia (falciparum & vivax) use CONSERVED as wellas VARIABLE sequences to bind to host cells.
1.
CONSERVED binding sequences are NOT antigenic, but VARIABLE sequences are
2.
CONSERVED binding sequences are NOT immuno-genicin ANY of the tested species when administe-red as monomers, polymerized, associated with T helperepitopes or presented as MAPs. While VARIABLE sequences can be immunogenic they are strain-specific
3.
To overcome this problem the critical contact residues in the binding interaction have to be identified and changed
4.
The critical contact residues have to be changed foraminoacids that ARE NOT commonly used during themutational process in the variable sequences
5.
6. Physicochemical characteristics such as size, charge andvolume have to be considered. Therefore A S; P D; F R; H L, K M; N I; Q E; C T; Y W; can be exchanged. G and C have special properties.
8. All the changes made to theCONSERVED binding peptides are designed to achieve a perfect fit with theMHC molecules and the TCR
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Reinherz E. L. et al., 1999 Science 286, 1973
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Synthetic vaccines - Emergingprinciples
7. There must be a 23.5 Å + 3.5 Å distance between thoseresidues fitting into Pockets 1-9 of Class II molecules.
Plasmodia (falciparum & vivax) use CONSERVED as wellas VARIABLE sequences to bind to host cells.
1.
CONSERVED binding sequences are NOT antigenic, but VARIABLE sequences are
2.
CONSERVED binding sequences are NOT immuno-genicin ANY of the tested species when administe-red as monomers, polymerized, associated with T helperepitopes or presented as MAPs. While VARIABLE sequences can be immunogenic they are strain-specific
3.
To overcome this problem the critical contact residues in the binding interaction have to be identified and changed
4.
The critical contact residues have to be changed foraminoacids that ARE NOT commonly used during themutational process in the variable sequences
5.
6. Physicochemical characteristics such as size, charge andvolume have to be considered. Therefore A S; P D; F R; H L, K M; N I; Q E; C T; Y W; can be exchanged. G and C have special properties.
8. All the changes made to the CONSERVED binding peptidesare designed to achieve a perfect fit with the MHC moleculesand the TCRStructural considerations together withaffinity, biological and Immunologicalactivities should guide the design ofsynthetic peptide vaccines.
9
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FIDICFIDIC
Bozedech Z et al August 18 2003. PLOS Biology 1, 001
PHASEOGRAM OF PUTATIVE VACCINE TARGETS
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C : CONSERVED
V: VARIABLE
High RBC binding activity peptides
FIDICFIDIC
PROTEIN C V Reference
MSP1 3 6 Urquiza M. et. al . 1996. Parasite Immunology . 18: 515-526
RESA 2 − Vera R. et al . 2000. Vaccine. 18: 1289-1293
SERA 6 1 Puentes A. et. al . 2000. Parasitology International. 49: 105-117
MSA2 1 2 Ocampo M. et. al . J. Peptide Research. 55: 216-233
EBA175 6 − Rodríguez L.E et. al. 2000. Parasitology. 120: 225-235
GBP130 1 − Suárez J. et. al . 2000. Mem. Inst. Oswaldo Cruz . 95: 495-501
HRP I, II, II 3 1 López R. et a l. 2000. Acta Tropica. 75: 349-359
ABRA 5 − Curtidor H. et. al . 2001. Vaccine. 19: 4496-4504
AMA1 4 3 Urquiza M. et. al . 2001. Vaccine. 19: 508-513
EBA140 6 − Rodríguez L.E.. et. al . 2003. J. Peptide Research. 62: 175-184
NBP1 2 − Valbuena J. et al . 2003. Peptides . 24: 1007-1014
MSP8 5 − Puentes A. et. al. 2003. Peptides .24: 1015-1023
MAEBL 9 − Ocampo M. et al . 2004. Biochem. Biophys. Res. Comm. 315: 319-329
RAP2 4 − López R. et al. 2004. Biochemie . 86: 1-6
RBP2 Ha/Hb 9 3 Ocampo M. et. al . 2004. Parasitol. Int. 53: 77-88
RAP1 4 − Curtidor H. et. al . 2004. Vaccine . 22: 1054-1062
EBA160 5 − Valbuena J. et al. 2004. Biochem. Biophys. Res. Comm . 321: 835-844
CLAG3 5 − Ocampo M. et. al. 2005. Proteins Science . 14: 504-513
EBL1 5 − Curtidor H. et. al. 2005. Protein Science . 14: 464-473
JESEBL 5 − Vera R. et al . 2004. Biochemie. In press
STEVOR − 3 García J. et al. 2004. Peptides. In press
MSP10 3 − Puentes A. et al . 2004. Biochemie. In press
MSP3 3 − Rodríguez L.E. et. al. 2004. Submitted to Protein Science
SORTILIN 6 − Vera R. et al. 2004. Submitted to Biochemistry
RESA-LIKE 3 − Rodríguez L.E. et. al. 2004. Submitted to J. Int. Parasitol.
TryThrA 4 − Curtidor H. et. al. 2004. Submitted to Chembiochem
HAP 2 − Valbuena J. et. al . 2004. Submitted to Biol. Chem.
MSP6 2 1 López R. et al. 2004. Submitted to Peptides
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Functional profile of proteinsexpressed in different P.
falciparum life-cycle stages
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Plasmodium sporozoite surface
and/or apical organelleproteome
Adapted of :Baldacci P et al. 2004 Mol. Microbiol. 54:298
Protein Other stages Subcellular Localization Conserved pepCs - Surface 2
TRAP - Surface, micronemes 7
MAEBL - Surface, micronemes
SPECT - Micronemes
EBA175 Mz Surface, micronemes
P235 Mz
AMA1 Mz Surface, micronemes
STARP RBC, LS Surface 5SALSA RBC, LS Surface 2
PEMP3 RBC, LS Surface
LSA3 LS Surface 11LSA1 LS 1
P52 - ?
MCP1 MZ ?
SPATR RBC Surface
PPLP1 - Micronemes
PfEMP1 ¡RBCSTEVOR ¡RBCRIFINS ¡RBC
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PEPTIDE SEQUENCE BINDING ACTIVITYNUMBER 2 4 6 8 10
3239 1 M N H L G N V K Y L V I V F L 15 S.S.3241 11 V I V F L I F F D L F L V N G 25
3243 21 F L V N G R D V Q N N I V D E 35 R I3245 31 N I V D E I K Y R E E V C N D 45 N-103247 41 E V C N D E V D L Y L L M D C 55
3249 51 L L M D C S G S I R R H N W V 65
3251 61 R H N W V N H A V P L A M K L 75
3253 71 L A M K L I Q Q L N L N D N A 85
3255 81 L N D N A I H L Y A S V F S N 95 A3257 91 S V F S N N A R E I I R L H S 105
3259 101 I R L H S D A S K N K E K A L 115 D3261 111 K E K A L I I I K S L L S T N 125 o3263 121 L L S T N L P Y G K T N L T D 135 m3265 131 T N L T D A L L Q V R K H L N 145 a3267 141 R K H L N D R I N R E N A N Q 155 i3269 151 E N A N Q L V V I L T D G I P 165 n3271 161 T D G I P D S I Q D S L K E S 175
3273 171 S L K E S R K L S D R G V K I 185
3275 181 R G V K I A V F G I G Q G I N 195
3277 191 G Q G I N V A F N R F L V G C 205
3279 201 F L V G C H P S D G K C N L Y 215 R-II3281 211 gf C N L Y A D S A W E N V K N 225
3283 221 E N V K N V I G P F M K A V C 235
3285 231 M K A V C V E V E K T A S C G 245
3287 241 T A S C G V W D E W S P C S V 255 R-II3289 251 S P C S V T C G K G T R S R K 265 Plus.
3291 261 T R S R K R E I L H E G C T S 275
3293 271 E G C T S E L Q E Q C E E E R 285 S.Py.3295 281 C E E E R C L P K R E P L D V 295 SSP23297 291 E P L D V P D E P E D D Q P R Y 305
3299 301 D D Q P R P R G D N F A V E K Y 315
3301 311 F A V E K P N E N I I D N N P 325 D3303 321 I D N N P Q E P S P N P E E G 335 i3305 331 N P E E G K G E N P N G F D L 345 R III v3307 341 N G F D L D E N P E N P P N P Y 355 e3309 351 N P P N P P N P P N P P N P P Y 365 r3311 361 P P N P P N P P N P D I P E Q 375 g3313 371 D I P E Q E P N I P E D S E K 385 e3315 381 E D S E K E V P S D V P K N P Y 395 n3317 391 V P K N P E D D R E E N F D I 405 t3319 401 E N F D I P K K P E N K H D N 415 R.3321 411 N K H D N Q N N L P N D K S D Y 425
3323 421 N D K S D R Y I P Y S P L S P 435 R. 3325 431 S P L S P K V L D N E R K Q S Y 445 B3327 441 E R K Q S D P Q S Q D N N G N Y 455 i3329 451 D N N G N R H V P N S E D R E Y 465 n3331 461 S E D R E T R P H G R N N E N Y 475 d3333 471 R N N E N R S Y N R K H N N T 485
nd i3335 481 K H N N T P K H P E R E E H E Y 495 R IV n3337 491 R E E H E K P D N N K K K A G Y 505 g3339 501 K K K A G S D N K Y K I A G G 515
3341 511 K I A G G I A G G L A L L A C 525 S.Py. 3343 521 A L L A C A G L A Y K F V V P 535 SSP23345 531 K F V V P G A A T P Y A G E P 545 T.D3347 541 Y A G E P A P F D E T L G E E 555 R V3349 551 T L G E E D K D L D E P E Q F 565 C.D.3351 561 E P E Q F R L P E E N E W N 575
Control PLGFFPDHQLDPAFGANSNNPDWDFNP
Ramsés López et al 2001, J. Pept. Res, 58: 285
Plasmodium falciparum binding studiesOf peptide derived from the sporozoite surface protein 2
to Hep G2 cell
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PEPTIDENUMBER Sequence BINDING ACTIVITY
20 30 40
4370 1 MMRKLA I L SVSSF L F VEAL FQEY 22
4371 8 L SVSS F L F VEAL FQEYQCYG 27
4372 13 F L F VEAL FQEYQCYGSSSNT 32.
4373 18 AL FQEYQCYGSSSNTRV LNE 37
4374 23 YQCYGSSSNTRVLNE LNYDN 42
4375 28 SSSNTRV LNE LNYDNAGTNL 47
4376 33 RV LNE LNYDNAGTNL YNE L E 52
4377 38 LNYDNAGTNL YNE L EMNYYG 57
4378 43 AGTNL Y EL EMNYYGKQENW 62
4379 48 YNE L EMNYYGKQENWYS LKK 67
4380 53 MNYYGKQENWYSLKKNSRS L 72
4381 58 KQENWYS LKKNSRS LGENDD 77
4382 63 YS LKKNSRS LGENDDGNNED 82
4383 68 NSRSLGENDDGNNEDNEKLRY 87
4384 73 GENDDGNNEDNEKLRKPKHKY 92
4525 78 GNNEDNEKLRKPKHKKLKQPY 97
4386 83 NEKLRKPKHKKLKQPADGNPY 102
4592REPEATDPNANPVDPNANPNVY4593REPEATNANPNANPNANPY nd
4387 281 NKNNQGNGQGHNMPNDPNRNY 300
4388 286 GNGQGHNMPNDPNRNVDENAY 305
4389 291 HNMPNDPNRNVDENANANSAY 310
4390 296 DPNRNVDENANANSAVKNNNY 315
4391 301 VDENANANSAVKNNNNEEPSY 320
4392 306 NANSAVKNNNNEEPSDKH I KY 325
4393 311 VKNNNNEEPSDKH I KEY LNK 330
4394 316 NEEPSDKH I KEYLNK I QNS L 335
4395 321 DKH I KEY LNK I QNS L ST EWS 340
4396 326 EY LNK I QNS L S TEWSPCSV T 345
4397 331 I QNSL S T EWSPCSV TCGNG I Y 350
4398 336 S T EWSPCSV TCGNG I QVR I KY 355
4399 341 PCSVTCGNG I QVR I KPGSANY 360
4400 346 CGNG I QVR I KPGSANKPKDEY 365
4401 351 QVR I KPGSANKPKDE LDYAN 370
4402 356 PGSANKPKDE LDYAND I EKK 375
4403 361 KPKDE LDYAND I EKK I CKMEKCS 380
4404 366 LDYAND I EKK I CKMEKCSSV 385
4405 371 D I EKK I CKMEKCSSV FNVVNY 390
4406 376 I CKMEKCSSV FNVVNSS I GL Y 395
4407 381 KCSSVFNVVNSS I GL I MV L SY 400
4408 386 FNVVNSS I GL I MV L S F L F LN 405
83
383
RTS
-S
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Polimorphic sequence found in different P. falciparum isolatesCorresponding to amino acids 326 to 345
Of the NF54 P. falciparum
Moreno A. et al. 1993 J Immunol. 151:489.
Isolates OriginNF54,XP8,9, X10,11,4271-4,6-10 3D7 Wets Africa, Honduras, The Netherlands E Y L N K I Q N S L S T E W S P C S V TltG2G1 Brazil K KMS2,SO6 Thailand, Brazil K K RLE5, 3669 Liberia, Gambia K K T366t, 3991-10, 4061-9, 41910 Gambia K K T K366 8,10 Gambia K Q406 10, 419 1-9 Gambia K Q K366 2-7 Gambia K Q RXs,XP 12,13 HB3, D10, T4, T9-101, Honduras, The Netherlands, Papua New Guinea, Q KWEL, B11, PA, FCR3 Thailand, West Africa, Uganda, GambiaS24, T9-98 Angola, Thailand Q K T K7G8 Brazil Q K K I
aAmino acids numbering is based on the CS protein of the NF54 strain of P. falciparum . The polimorphic residues are underline, and only amino acids that differ from the NF54 sequence are shown for each strain or isolate. The subscript numbers correspond to the isolate name described in materials and methods
Sequence
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SOME OTHER
VACCINES
IN PROGRESS
AT FIDIC
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PEPTIDO 1%
11175 1 20
11176 21 40
11177 41 60
11178 61 80
11179 81 100
11180101 120
11181121 140
11182141 160
11183161 180
11184181 200
11185191
SEQUENCE
MI ATTRDREGATMI TFRLRLY
PCRTI L RVF SRNPL VRGTDRY
LEAVVMLL AVTVSLLT I PFAY
AAAGTAVQDSRSHVYAHQAQ
TRHPAT AT VI DHEGVI DSNTY
TAT SAPPRT KI TVPARWVVNY
GI ERSGEVNAKPGT KSGDRVY
GI WVDSAGQL VDEPAPPARAY
I ADAAL AAL GLWLSVAAVAGY
ALL ALT RAI L I RVRNASWQHY
I RVRNASWQHDI DSLFCTQRY 210
PERFIL DE UNION DE PEPTIDOS PERFIL DE UNION DE PEPTIDOS DERIVADOS DEL CLON DERIVADOS DEL CLON
MTCY04C12.18c DE M.MTCY04C12.18c DE M. tuberculosistuberculosis
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L
16nM
-8K
0
8K
16K
24K
32K
* A E I L V K Y AQ L A D K R A R V Y V L
UN
ION
ESP
ECIF
ICA
400nM
0
9K
18K
27K
36K
* A E I L V K Y A QL A D K R A R V Y V
UN
ION
ESP
ECIF
ICA
cpm
s
4µM
-10K
-5K
0
5K
10K
15K
20K
25K
30K
35K
* A E I L V K Y A QL A D K R A R V Y V L
UN
ION
ESP
ECIF
ICA
cpm
s
40µM
0
9K
18K
27K
36K
45K
54K
* A E I L V K Y AQ L A D K R A R V Y V L
UN
ION
ESP
ECIF
ICA
cpm
s
MYCOBACTERIUM TUBERCULOSIS: MYCOBACTERIUM TUBERCULOSIS: ANALOGOS DEL PEPTIDO 11060 DE LA ANALOGOS DEL PEPTIDO 11060 DE LA PROTEINA PUTATIVA DE MEMBRANA PROTEINA PUTATIVA DE MEMBRANA
MTCY277.12 MTCY277.12
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PEPTIDO SEQUENCE 1%
11199 1MTNWMLRGLAFAAAMVVLRL 20
1120021FQGAL I NAWQMLSGL I SLVL 40
1120141LLLFAI GGVVWGVMDGRADA 60
1120261KASPDPDRRQDLAMTWLLAGY 80
1120381LVAGALSGAVAWL I SLFYKA 100
11204101I YTGGP I NELTTFAAFTAL I 120
11205121VFLVGI VGVAVGRWLVDRQLY140
11206141AKAPVRHHGLAAEHERAADTY160
11207161DVFSAVRADDSPTGEMQVAQY180
11208181PEAQTAAVATVEREAPTEV I Y200
11209201RTTESDTPTEV I RTDTEADQY220
11210211V I RTDTEADQTKPGDEPKKDY230
PERFIL DE UNION DE PEPTIDOS PERFIL DE UNION DE PEPTIDOS DERIVADOS DEL CLON DERIVADOS DEL CLON
MTCY159.20c DE M.MTCY159.20c DE M. tuberculosistuberculosis
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MYCOBACTERIUM TUBERCULOSIS: MYCOBACTERIUM TUBERCULOSIS: ANALOGOS DEL PEPTIDO 11076 DE LA ANALOGOS DEL PEPTIDO 11076 DE LA PROTEINA PUTATIVA DE MEMBRANA PROTEINA PUTATIVA DE MEMBRANA
MTCY277.12 MTCY277.12
16nM
-10K
6K
22K
38K
54K
70K
86K
* Y V S A V P V R T F F A E L R N L A L
UN
ION
ESP
ECIF
ICA
cpm
s
400nM
-20K
0
20K
40K
60K
80K
* Y V S A V P V R T F F A E L R N L A L
UN
ION
ESP
ECIF
ICA
cpm
s
4µM
-32K
0
32K
64K
96K
128K
160K
* Y V S A V P V R T F F A E L R N L A L
UN
ION
ESP
ECIF
ICA
cpm
s
40µM
0
48K
96K
144K
192K
* Y V S A V P V R T F F A E L R N L A L
UN
ION
ESP
ECIF
ICA
cpm
s
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PEPTIDO
11059110601106111062110631106411065110661106711068110691107011071110721107311074110751107611077110781107911080
20
40
60
80
101
120
140
160
180
200
220
240
260
280
300
320
341
360
380
400
420
21
41
61
81
101
121
141
161
181
201
221
241
261
281
301
321
341
361
381
401
416
SEQUENCE1M S Q C F A V K G I G G A D Q A T L G S YA E I L V K Y A Q L A D K R A R V Y V LV S T WL V V WG I WH V Y F V E A V FP N A I L WL H Y Y A A S Y E F G F V RR G L G G E L I R M L T G D H F F A G A YY T V L WT S I T V WL I A L A V V V WL I L S T G N R S E R R I M L A L L V P YV L P F A F S Y A I Y N P H P E L F G MT A L V A F S I F L T R A H T S R T R V YI L S T L Y G L T M A V L A L I H E A IP L E F A L G A V L A I I V L S K N A T YG A T R R I C T A L A I G P G T V S V L YL L A V V G R R D I A D Q L C A H I P H YG M V E N P WA V A T T P Q R V L D Y IF G R V E S H A D Y H D WV C E H V T PWF N L D WI T S A K L V A V V G F R A YL F G A F L L G L L F F V A T T S MI R YY V S A V P V R T F F A E L R G N L A LP V L A S A L L V P L F I T A V D WT R YWWV MI T L D V A I V Y I L Y A I D RP E I E Q P P S R R N V Q V F V C V V L YV C V V L V L A V I P T G S A N N I G R Y 435
1%
PERFIL DE UNION DE PEPTIDOS PERFIL DE UNION DE PEPTIDOS DERIVADOS DEL CLON DERIVADOS DEL CLON
MTCY277.12 DE M.MTCY277.12 DE M. tuberculosistuberculosis
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16nM
0
39K
78K
117K
156K
* F R V E S H A D Y H DWV CE H V T P
UN
ION
ESP
ECIF
ICA
cpm
s
400nM
0
58K
116K
174K
232K
290K
* F R V E S H A D Y H DWV C E H V T P
UN
ION
ESP
ECIF
ICA
cpm
s
4µM
0
66K
132K
198K
264K
330K
* F R V E S H A D Y HDWV C E H V T P
UN
ION
ESP
ECIF
ICA
cpm
s
40µM
0
90K
180K
270K
360K
450K
* F R V E S H A D Y H DWV C E H V T P
UN
ION
ESP
ECIF
ICA
cpm
s
MYCOBACTERIUM TUBERCULOSIS: MYCOBACTERIUM TUBERCULOSIS: ANALOGOS DEL PEPTIDO 11073 DE LA ANALOGOS DEL PEPTIDO 11073 DE LA PROTEINA PUTATIVA DE MEMBRANA PROTEINA PUTATIVA DE MEMBRANA
MTCY277.12 MTCY277.12
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PEPTIDE SEQUENCE High Specific Binding Activity (VERO CELLS) High Specific Binding Activity (HeLa CELLS)NUMBER 2 2
18306 1 M C L Y T R V L I L H Y H L L P L Y G P 2018307 21 L Y H P R P L P L H S I L V Y M V H I I 4018308 41 I C G H Y I L F L R N V N V F P I F L I 6018309 61 Q M A L W R P S D N T V Y L P P P S V A 8018310 81 R V V N T D D Y V T P T S I F Y H A G S 10018311 101 S R L L T V G N P Y F R V P A G G G N K 12018312 121 Q D I P K V S A Y Q Y R V F R V Q L P D 14018313 141 P N K F G L P D T S I Y N P E T Q R L V 16018314 161 W A C A G V E I G R G Q P L G V G L S G Y 18018315 181 H P F Y N K L D D T E S S H A A T S N V 20018316 201 S E D V R D N V S V D Y K Q T Q L C I L 22018317 221 G C A P A I G E H W A K G T A C K S R P Y 24018318 241 L S Q G D C P P L E L K N T V L E D G D Y 26018319 261 M V D T G Y G A M D F S T L Q D T K C E 28018320 281 V P L D I C Q S I C K Y P D Y L Q M S A 30018321 301 D P Y G D S M F F C L R R E Q L F A R H 32018322 321 F W N R A G T M G D T V P Q S L Y I K G 34018323 341 T G M P A S P G S C V Y S P S P S G S I 36018324 361 V T S D S Q L F N K P Y W L H K A Q G H 38018325 381 N N G V C W H N Q L F V T V V D T T P S Y 40018326 401 T N L T I C A S T Q S P V P G Q Y D A T 42018327 421 K F K Q Y S R H V E E Y D L Q F I F Q L 44018328 441 C T I T L T A D V M S Y I H S M N S S I 46018329 461 L E D W N F G V P P P P T T S L V D T Y 48018330 481 R F V Q S V A I T C Q K D A A P A E N K Y 50018331 501 D P Y D K L K F W N V D L K E K F S L D 52018332 521 L D Q Y P L G R K F L V Q A G L R R K P 54018333 541 T I G P R K R S A P S A T T S S K P A K Y 56018334 561 A P S A T T S S K P A K R V R V R A R K Y 580
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100 Å100 Å
18283
18294
18301
Vera, R. et al. 2003. Int. J. Cancer. 107:416
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Herpes Virus SaimiriPeptide Sequence and Binding Activity of Probable Antigen 75
Curtidor H. et al. Manuscript in preparation
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VHTVHG-VHG+THG+THG-THTIHTIHG-IHG+LHG+LHG-LHTQHG+EHTEHG-EHG+QHG-QHTDHTDHG+NHTNHG-NHG+DHG-SHTSHG+AHSHG-CHTCHG+CHG-MHTMHG+MHG-KHTKHG+KHG-VBTVBG-VBG+TBTTBG-TBG+SBG+SBG-SBTABLBTLBG-LBG+IBTIBG-IBG+CBTCBG-CBG+QBG-EBG-EBTQBG+EBG+QBTDBTDBG-DBG+NBTNBG-MBTMBG-MBG+KBG+KBG-KBTHHTHHG-HHG+PHPBYHTFHTYHG+FHG+YHG-FHG-YBTYBG-FBTFBG-YBG+FBG+HBTHBG-HBG+WHTWHG-WHG+WBG-WBG+WBTRHG-RHG+RHTRBTRBG-RBG+GHGB
Conformación Alfa
Conformación Beta
Aminoácidos Pi
Prolina
Glycina
ϕ
φ
21 índices de mecánica quántica19 índices grafo-teóricos
Ala-X-AlaNH2-X-CHO
• 2 conformaciones (alfa y beta)• 3 rotámeros (g+, g-, t)540 moléculas
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Asn +
Asn -
Ile +
Ile -
Glu +
Glu -
Met +
Met -
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Synthetic vaccines - Emergingprinciples
7. There must be a 23.5 Å + 3.5 Å distance between thoseresidues fitting into Pockets 1-9 of Class II molecules.
Plasmodia (falciparum & vivax) use CONSERVED as wellas VARIABLE sequences to bind to host cells.
1.
CONSERVED binding sequences are NOT antigenic, but VARIABLE sequences are
2.
CONSERVED binding sequences are NOT immuno-genicin ANY of the tested species when administe-red as monomers, polymerized, associated with T helperepitopes or presented as MAPs. While VARIABLE sequences can be immunogenic they are strain-specific
3.
To overcome this problem the critical contact residues in the binding interaction have to be identified and changed
4.
The critical contact residues have to be changed foraminoacids that ARE NOT commonly used during themutational process in the variable sequences
5.
6. Physicochemical characteristics such as size, charge andvolume have to be considered. Therefore A S; P D; F R; H L, K M; N I; Q E; C T; Y W; can be exchanged. G and C have special properties.
8. All the changes made to the CONSERVED binding peptidesare designed to achieve a perfect fit with the MHC moleculesand the TCRStructural considerations together with affinity, biological andImmunological activities should guide the design of syntheticpeptide vaccines.
9.
This methodology elicits protective immunityagainst NON ANTIGENIC, NON IMMUNOGENIC CONSERVED BINDING PEPTIDES, providing a new and powerful tool for the rationaldevelopment of synthetic vaccines
10.
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RECEPTOR LIGANDOMarisol OcampoRamsés López
Hernando CurtidorAlvaro Puentes
Luis Eduardo RodríguezRicardo VeraJavier García
John ValbuenaErika Vega
RMN
BIOCATALISISJosé Manuel Lozano
Andrés López
SINTESIS DE PEPTIDOS
IMMUNOLOGIA
Jaiver rosas Zuly Rivera
Elizabeth TorresMagnolia Vanegas
Luis RamírezClaudia ReyesMartha Pinto
Carolina VargasPaola PachecoMiguel Navarro
Jesús LeitonRubén Quiroz
Sandra Calderón
Carlos ParraGabriela DelgadoEsperanza Trujillo
Luis Eduardo VargasEdith Hernández
Juan BaqueroDarnel Marchena
Fabiola EspejoLuz Mary SalazarGladys Cifuentes
Patricia AlbaAdriana Bermúdez
FISIOLOGIAJean Paul Vernot
Hernando del CastilloAlberto Pérez
Ana Maria Perdomo
VIROLOGIARoberto AmadorMauricio Urquiza
Tatiana RozoLuz Helena Patiño
INMUNOQUIMICAYolanda SilvaMartha ForeroJimena Cortes
BIOLOGIA MOLECULARManuel Alfonso Patarroyo
Carlos BarreroAdriana Sierra
Diana TovarPilar Martínez
Paula CárdenasCamilo MoncadaYolanda López
Rosalba AlfonsoOscar Pérez
BIOMATEMATICASMateo Obregón
Constanza CárdenasCarlos Suárez
Alejandro BalbinMarisol Ortiz
Marcia ArdilaRaúl Rodríguez
Manuel Elkin Patarroyo
ESTACION PRIMATES
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Inmunología MolecularReceptor-Ligando
Inmunoquímica
Síntesis Quimica de
Macro-moleculas
NMR y Estructura 3DBiologia Molecular
Quimica Cuantica