Novel lipid side chain modified exenatide analogs emerged prolonged glucoregulatory activity and potential body weight management properties
作者:Chengye Li、Xingguang Cai、Yuxuan Dai、Chunxia Liu、Xinzhou Bi、Jiaqi Zhou、Qifei Li、Lidan Sun、Wenlong Huang、Zhibo Hou、Hai Qian
DOI:10.1016/j.bmc.2019.115070
日期:2019.10
marketed GLP-1 agonist for antidiabetic treatment, but it need twice injection a day because of its fast clearance. This work aims to prolong the half-life of exenatide by modified with novel lipid chain. Four optimized exenatide analogs named as Cys12-Exenatide (1–39)-NH2, Cys40-Exenatide (1–39)-NH2, Cys12-Tyr22-Gln24-Glu28-Arg35-Exenatide (1–39)-NH2 and Tyr22-Gln24-Glu28-Arg35-Cys40-Exenatide (1–39)-NH2
艾塞那肽是第一个上市的用于抗糖尿病治疗的GLP-1激动剂,但由于其清除速度快,因此每天需要注射两次。这项工作旨在通过新型脂质链修饰来延长艾塞那肽的半衰期。四个优化的艾塞那肽类似物,分别称为Cys12-艾塞那肽(1-39)-NH 2,Cys40-艾塞那肽(1-39)-NH 2,Cys12-Tyr22-Gln24-Glu28-Arg35-艾塞那肽(1-39)-NH 2和选择Tyr22-Gln24-Glu28-Arg35-Cys40-艾塞那肽(1-39)-NH 2并用于缀合。然后进行了包括GLP-1R激活测定在内的一系列评估,共轭C2被选中进行进一步调查。进行了调糖和胰岛素分泌测定以及降糖持续时间测试,结果表明C2具有与利拉鲁肽和艾塞那肽相当的促胰岛素活性和降糖能力。在INS-1细胞中的细胞保护作用证实C2具有相对的保护作用。同时,每天一次向STZ诱导的糖尿病小鼠注射C2对葡萄糖耐量,体重和血液