The effect of thymopoietin II fragments and their analogs on E-rosette forming cells in the uremic state.
作者:TAKASHI ABIKO、IKUKO ONODERA、HIROSHI SEKINO
DOI:10.1248/cpb.28.2507
日期:——
The synthesis of four fragments from dipeptide to pentapeptide, corresponding to amino acids 32 to 36 of thymopoietin II, and four analogs is described, together with their effects on E-rosette forming cells in the uremic state. After incubation with amounts of H-Arg-Lys-Asp-Val-Tyr-OH (residues 32-36) varying from 100 to 200 μg/ml of cell suspension, maximum T-cell rosette formation ranged from 65 to 73% compared with 50 to 52% without the peptide. The activity of H-Arg-Lys-Glu-Val-Tyr-OH was lower than that of H-Arg-Lys-Asp-Val-Tyr-OH. The other fragments and analogs had no effect on the E-rosette formation-inhibiting activity of uremic serum at a dose of 200 μg/ml
描述了从二肽到五肽的四个片段的合成,这些片段对应于胸腺生成素 II 的氨基酸 32 到 36,以及四个类似物,连同它们在尿毒症状态下对 E 菊花状细胞的影响。在与浓度从 100 到 200 μg/ml 的 H-Arg-Lys-Asp-Val-Tyr-OH(残基 32-36)进行孵育后,最大 T 细胞菊花状形成率从 65% 到 73% 不等,而没有肽的情况下形成率为 50% 到 52%。H-Arg-Lys-Glu-Val-Tyr-OH 的活性低于 H-Arg-Lys-Asp-Val-Tyr-OH。其他片段和类似物对尿毒症血清在 200 μg/ml 剂量下抑制 E 菊花状形成的活性没有任何影响。