This invention relates to peptides directing a CD4 related T helper cell response wherein the peptides may be used as an adjuvant provided with an antigen or as an immunomodulatory agent without an antigen and compositions comprising modification of a fifteen-mer peptide sequence from the MHC IIβ chain at positions 135-149 known as Peptide G or a derivative of derG or other derivatives wherein the derivatives enhance the immune response of antigens compositions useful as a pharmaceutical, adjuvant, immunostimulant or immunomodulator to activate the immune system wherein the compositions may also be peptides, non-peptide mimetics or organic molecules selected from aliphatics, carbohydrates, heterocyclics, aromatics or mixtures thereof.
本发明涉及肽段,可引导与C
D4相关的T辅助细胞反应。其中,这些肽段可以作为佐剂与抗原一起使用,也可以作为免疫调节剂在没有抗原的情况下使用,并包括对
MHC IIβ链上135-149位的15个
氨基酸肽段序列(Peptide G)进行改变的组合物,或derG或其他衍
生物的衍
生物,其中这些衍
生物增强了抗原组合物的免疫反应,可用作制药、佐剂、免疫刺激剂或免疫调节剂来激活免疫系统,这些组合物也可以是肽段、非肽类模拟物或选择自脂肪族、
碳水化合物、杂环、芳香族或其混合物的有机分子。