Thyrotropin-Releasing Hormone (TRH) Analogues That Exhibit Selectivity to TRH Receptor Subtype 2
作者:Navneet Kaur、Xinping Lu、Marvin C. Gershengorn、Rahul Jain
DOI:10.1021/jm0505462
日期:2005.9.1
Thyrotropin-releasing hormone (TRH) analogues in which the C-2 position of the imidazole ring of the centrally placed histidine residue is substituted with various alkyl groups were synthesized and studied as agonists for TRH receptor subtype 1 (TRH-R1) and subtype 2 (TRH-R2). Several analogues were found to be selective agonists for TRH-R2 exhibiting no activation of TRH-R1. For example, analogue
合成了促甲状腺激素释放激素(TRH)类似物,其中位于中心的组氨酸残基的咪唑环的C-2位置被各种烷基取代,并被研究用作TRH受体亚型1(TRH-R1)和亚型2的激动剂(TRH-R2)。发现几种类似物是TRH-R2的选择性激动剂,其不显示TRH-R1的活化。例如,发现类似物4(R = c-C3H5)以0.41 microM的效力(EC50)激活TRH-R2,但没有激活TRH-R1(效力> 100 microM)。这项研究描述了TRH-R2特异性激动剂的首次发现,并为设计以CNS有效的TRH肽提供了动力。