A fragment corresponding to N-terminal octaeicosapeptide of rat parathymosin α was synthesized by assembling 5 peptide fragments, followed by deprotection with 1 M trifluoromethanesulfonic acid-thioanisole (molar ratio 1 : 1) in trifluoroacetic acid in the presence of dimethylselenium. Incubation of impaired T-lymphocytes isolated from uremic patients with the synthetic parathymosin α fragment 1-28 showed no immunological restoring effect, but when it was administered together with thymosin α1 it appeared to suppress the restoring effect of the thymosin α1 on the impaired T-lymphocytes of uremic patients.
在
二甲基硒存在下,将 5 个肽片段组合在一起,然后在
三氟乙酸中用 1 M
三氟甲磺酸-
硫代
苯甲醚(摩尔比 1:1)进行脱保护,合成了与大鼠副胸腺肽 α 的 N 端八位二肽相对应的片段。用合成的副胸腺肽α片段 1-28 培养从尿毒症患者体内分离出来的受损 T 淋巴细胞,结果显示它没有免疫恢复作用,但当它与胸腺肽α1 一起使用时,似乎会抑制胸腺肽α1 对尿毒症患者受损 T 淋巴细胞的恢复作用。