The octatetracontapeptide corresponding to the entire amino acid seuence of human thymopoietin (hTP) was synthesized by assembling ten peptide fragments in solution followed by deprotection with 1 M trifluoromethanesulfonic acid-thioanisole (molar ratio, 1 : 1) in trifluoroacetic acid in the presence of dimethylselenide and m-cresol. Finally, the deprotected peptide was incubated with dithiothreitol to reduce sulfoxide on the methionine side chain. The synthetic peptide was found to have a restoring effect on the impaired blastogenic response of T-lymphocytes isolated from uremic patients.
对应于人
胸腺生成素(hTP)全部
氨基酸序列的八四肽是通过在溶液中组装十个肽片段,随后使用
三氟甲磺酸-
噻吩(摩尔比1:1)在
三氟乙酸中并加入
二甲基硒和
间甲酚进行脱保护,最终将脱保护的肽与二
硫苏糖醇孵育以还原蛋
氨酸侧链上的亚砜来合成的。研究发现,合成肽对从尿毒症患者中分离的T淋巴细胞的受损增殖反应具有恢复作用。