A heptadecapeptide, H-Arg-Lys-Ala-Val-Tyr-Val-Glu-Leu-Tyr-Leu-Gln-Ser-Leu-Thr-Ala-Glu-His-OH, corresponding to amino acids 32 to 48 of human splenin (hSP) and an analog in which the amino acid residue at position 34 is changed from Ala to Glu, were synthesized. These peptides were synthesized using conventional solution synthesis and were tested for their effect on reduced B-lymphocytes of uremic patients. Incubation of peripheral lymphocytes isolated from uremic patients with these two synthetic heptadecapeptides, hSP fragment 32-48 and [Glu34]hSP fragment 32-48, had an enhancing effect on the reduced B-lymphocytes, but synthetic bovine thymopoietin II (bTP-II) fragment 32-49 had no effect under the same conditions.
我们合成了与人脾蛋白(h
SP)第 32 至 48 位
氨基酸相对应的 H-Arg-Lys-Ala-Val-Tyr-Val-Glu-Leu-Tyr-Leu-Gln-Ser-Leu-Thr-Ala-Glu-His-OH 十七肽,以及将第 34 位
氨基酸残基从 Ala 改为 Glu 的类似物。这些肽是用传统的溶液合成法合成的,并测试了它们对尿毒症患者减少的 B 淋巴细胞的影响。用这两种合成的十七肽(h
SP 片段 32-48 和 [Glu34]h
SP 片段 32-48)孵育从尿毒症患者体内分离出来的外周淋巴细胞,可增强对衰退的 B 淋巴细胞的作用,但在相同条件下,合成的牛
胸腺生成素 II(bTP-II)片段 32-49 没有作用。