在Gi-合受体GPR82处具有cationic头组的lysophospholipids的逆激素作用
Daisuke Yasuda1, Fumie Hamano2, Kazuyuki Masuda3
1Department of Immunology, Graduate School of Medicine, Akita University, Akita, Japan.
European journal of pharmacology
|July 1, 2023
概括
性溶解脂,包括埃德尔福辛,作为构成性活跃的GPR82受体的新型逆激动剂. 这些化合物抑制GPR82信号传递,并可能促进脂解.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- GPR82是一种孤儿G蛋白结合受体 (GPCR),参与脂质储存.
- 它的细胞内信号通路和特定的连接体仍然在很大程度上是未知的.
- 在结构上,GPR82与GPR34有关,GPR34是lysophosphatidylserine的受体.
研究的目的:
- 为了识别与GPR82.2结合并调节其活性的配体.
- 阐明GPR82.2.的信号机制和构成性活动.
- 研究GPR82在脂肪细胞脂解中的潜在作用.
主要方法:
- 使用GPR82转移的细胞选脂质库.
- 测量周期性腺单酸盐 (cAMP) 的水平.
- 福斯特共振能量转移 (FRET) 成像和瓜诺辛-5'-O-(3-三酸盐) 结合试验.
- 对胰岛素诱导的细胞外信号调节激酶 (ERK) 激活的分析.
- 评估GPR82对脂肪细胞脂解的影响.
主要成果:
- GPR82表现出明显的构成性活性,激活Gi蛋白.
- 埃德尔福辛,溶酸乙醇胆和溶酸乙醇胺抑制了GPR82Gi蛋白的激活.
- 埃德尔福辛表现出逆激动作用,抑制胰岛素诱导的ERK激活.
- GPR82表达抑制了脂肪细胞脂解,这种效应被埃德尔福辛逆转.
结论:
- 包括埃德尔福辛在内的性溶解脂是构成性活性,Gi-合的GPR82受体的新型逆agonists.
- 埃德尔福辛和相关化合物可以调节GPR82活性并影响脂肪细胞脂解.
- 这些发现为涉及GPR82.2.的代谢障碍提供了潜在的治疗点.
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