| 摘要 |
<p>A class of immunogenic compounds is described, definable by the formula (I): <CHEM> where: D is L-lysine or branched poly(L-lysine) with a number n of L-lysine amino acid residues (Lys) of a and epsilon amide linkage; n is a whole odd number varying from 1 to 15; A and B, which can be the same or different, are a polypeptide consisting of one or more plasmodial B epitopes covalently bound to one or more peptides with an amino acid sequence corresponding to that of a T epitope such as FNNFTVSFWLRVPKVSASHLEA (TT3) and QYIKANSKFIGITE (TT2), a compound of adjuvant activity, or A-CO or B-CO represent a direct bond or R-A-CO or R-B-CO are a protecting group for the alpha or epsilon -amino group of the L-lysine amino acid residue, with the condition that A and B are not both simultaneously an adjuvant or a direct bond or a protecting group; X is an amino acid residue <CHEM> in which R1 is the side chain of a amino acid residue chosen from L-Asp, L-His, L-Cys, L-Gln, L-Thr, L-Ala, L-Leu, L-Met, L-Phe, L-Glu, L-Arg, L-Tyr, L-Asn, L-Ser, L-Gly, L-Val, L-Ileu, L-Pro and L-Trp, and R2 is OH or NH2; R is hydrogen or an acyl radical; and the corresponding pharmaceutically acceptable salts of acid or basic addition. Compounds of formula (I) are particularly suitable as immunogens for preparing genetically non-restricted antimalaria vaccines, and in diagnostics for determining anti-Plasmodium antibodies in blood, serum and blood spot samples.</p> |
