Synthesis of calf thymosin .BETA.4 fragment 16-38 and its effect on the impaired blastogenic response of T-lymphocytes of a uremic patient with pneumonia.
作者:TAKASHI ABIKO、HIROSHI SEKINO
DOI:10.1248/cpb.35.3757
日期:——
Thymosin β4 fragment 16-38, H-Lys-Leu-Lys-Lys-Thr-Glu-Thr-Gln-Glu-Lys-Asn-Pro-Leu-Pro-Ser-Lys-Glu-Thr-Ile-Glu-Gln-Glu-Lys-OH, was synthesized by a solution method, by assembling five peptide fragments followed by deprotection with 1 M trifluoromethanesulfonic acid-thioanisole in trifluoroacetic acid. The synthetic tricosapeptide was tested for effect on the impaired blastogenic response of phytohemagglutinin-stimulated T-lymphocytes of a uremic patient with pneumonia. The synthetic tricosapeptide was found to have restoring activity, which was approximately equal in potency to that of our synthetic deacetyl-thymosin β4.
胸腺素β4片段16-38,H-赖氨酸-亮氨酸-赖氨酸-赖氨酸-苏氨酸-谷氨酸-苏氨酸-谷氨酰胺-谷氨酸-赖氨酸-天冬酰胺-脯氨酸-亮氨酸-脯氨酸-丝氨酸-赖氨酸-谷氨酸-苏氨酸-异亮氨酸-谷氨酸-谷氨酰胺-谷氨酸-赖氨酸-OH,通过溶液法合成,采用五个肽片段组装,随后以三氟乙酸中的1 M三氟甲磺酸-硫代茴香醚进行脱保护。合成的二十三肽被测试其对肺炎尿毒症患者经植物血凝素刺激的T淋巴细胞受损的增殖反应的影响。发现合成的二十三肽具有恢复活性,其效力与我们合成的去乙酰基胸腺素β4大致相当。