Synthesis of the nonatetracontapeptide corresponding to the entire amino acid sequence of thymopoietin III and its effect on the impaired T-lymphocyte transformation of a patient with common variable immunodeficiency.
作者:TAKASHI ABIKO、HIROSHI SHISHIDO、HIROSHI SEKINO
DOI:10.1248/cpb.34.2133
日期:——
The nonatetracontapeptide corresponding to the entire amino acid sequence of thymopoietin III was synthesized by assembling ten peptide fragments in solution followed by deprotection with 1M trifluoromethanesulfonic acid-thioanisole (molar ratio, 1 : 1) in trifluoroacetic acid in the presence of m-cresol. The synthetic nonatetracontapeptide was tested for effect on impaired T-lymphocyte transformation by phytohemagglutinin (PHA) in common variable immunodeficiency.The synthetic nonatetracontapeptide was found to have restorin activity on the T-lymphocyte transformation by PHA. However, the restoring activity of the synthetic nonatetracontapeptide was lower than that of the synthetic thymopoietin I at a dos of 2 μg/ml.
对应于胸腺生成素III整个氨基酸序列的非九十三肽,是通过溶液中组装十个肽片段,随后在间甲酚存在下用1M三氟甲磺酸-噻吩甲烷(摩尔比,1:1)在三氟乙酸中脱保护来合成的。合成的非九十三肽被测试了其在常见变异性免疫缺陷中对植物血凝素(PHA)诱导的受损T淋巴细胞转化的影响。发现合成的非九十三肽对PHA诱导的T淋巴细胞转化具有恢复活性。然而,合成的非九十三肽的恢复活性在2μg/ml剂量下低于合成胸腺生成素I的活性。