Structure–Activity Relationships of a Series of Analogues of the RFamide-Related Peptide 26RFa
作者:Olivier Le Marec、Cindy Neveu、Benjamin Lefranc、Christophe Dubessy、Jean A. Boutin、Jean-Claude Do-Régo、Jean Costentin、Marie-Christine Tonon、Manuel Tena-Sempere、Hubert Vaudry、Jérôme Leprince
DOI:10.1021/jm200418c
日期:2011.7.14
well both modifications. Most importantly, replacement of Ser23 by a norvaline led to an analogue, [Nva23]26RFa(20–26), that was 3-fold more potent than the native heptapeptide. These new pharmacological data, by providing the first information regarding the structure–activity relationships of 26RFa analogues, should prove useful for the rational design of potent GPR103 receptor ligands with potential
26RFa是RFamide肽家族的新成员,已被确定为孤儿GPCR GPR103的内源性配体。由于C端七肽(26RFa (20–26))模仿了天然肽对啮齿类动物食物摄入和促性腺激素分泌的作用,我们合成了一系列26RFa (20–26)类似物,并测量了其诱导的能力。的[Ca 2+ ]我动员Gα 16 - ħ GPR103转染的CHO细胞中。用丙氨酸(Ala扫描)及其d-对映体(d扫描)显示最后三个C末端残基对取代非常敏感,而23位对两个修饰的耐受性都很好。最重要的是,用正缬氨酸替代Ser 23导致类似物[Nva 23 ] 26RFa (20–26),其效力是天然七肽的3倍。通过提供有关26RFa类似物的结构-活性关系的第一个信息,这些新的药理学数据应被证明对合理设计具有潜在治疗应用潜力的强效GPR103受体配体有用。