申请人:IMMUNOBIOLOGY RESEARCH INSTITUTE, INC.
公开号:EP0361977A2
公开(公告)日:1990-04-04
Peptides having the biological activity of the molecule human thymopentin, namely the ability to increase cGMP activity in human T-cell line CEM, have the formula
R-Arg-X-Asp-Y-NR¹R²
wherein
R is H, lower alkyl, acetyl, formyl lower alkanoyl;
X is Pro, dehydro-Pro, hydroxyl-Pro, D-Lys, Aib or Lys;
Y is Gly or a D or L form of an amino acid selected from Val, Ala, Ile, Leu, Asp, Glu, Gln or Lys;
R¹ is H and R² is lower alkyl or alkenyl having 1 to 10 carbon atoms, cyclic alkyl or alkenyl having 4 to 8 carbon atoms, aryl or NHR³, where R³ is a lower alkyl having 1 to 10 carbon atoms, cyclic alkyl or alkenyl having 4 to 8 carbon atoms, or aryl; or
R¹ and R² together comprise a methylene chain of 4 to 7 carbon atoms.
These peptides can be used in pharmaceutical compositions for regulating a deficiency or excess of T-cell function in human subjects.
具有人胸腺五肽分子生物活性,即能够提高人T细胞系CEM中cGMP活性的多肽,其分子式为
R-Arg-X-Asp-Y-NR¹R²
其中
R 是 H、低级烷基、乙酰基、甲酰基、低级烷酰基;
X 是 Pro、脱氢-Pro、羟基-Pro、D-Lys、Aib 或 Lys;
Y 是 Gly 或选自 Val、Ala、Ile、Leu、Asp、Glu、Gln 或 Lys 的氨基酸的 D 或 L 形式;
R¹ 是 H,R² 是具有 1 至 10 个碳原子的低级烷基或烯基、具有 4 至 8 个碳原子的环状烷基或烯基、芳基或 NHR³,其中 R³ 是具有 1 至 10 个碳原子的低级烷基、具有 4 至 8 个碳原子的环状烷基或烯基或芳基;或
R¹ 和 R² 共同组成 4 至 7 个碳原子的亚甲基链。
这些肽可用于药物组合物,以调节人体T细胞功能的不足或过剩。