通过G蛋白结合受体发送的二碳酸信号调节了缺血症-再输液损伤的调节
Airi Jo-Watanabe1,2, Toshiki Inaba3, Takahiro Osada4
1Department of Biochemistry, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan. awatanabe-tky@umin.ac.jp.
Nature communications
|February 27, 2024
概括
二碳酸盐离子激活GPR30,这是大脑壁细胞中的受体,影响反应和血液流动. 这一发现提供了通过准GPR30信号来治疗缺血性中风的新治疗策略.
科学领域:
- 生理学 生理学 生理学
- 分子生物学分子生物学
- 神经科学是一个神经科学.
背景情况:
- 酸平衡对细胞功能至关重要.
- 将酸平衡与细胞反应联系在一起的分子机制尚未完全理解.
- G蛋白结合受体 (GPCRs) 在细胞信号传递中发挥着不同的作用.
研究的目的:
- 通过确定酸平衡调节细胞反应的分子机制.
- 为了研究二碳酸盐离子在细胞信号传输中的作用.
- 探索针对缺血性中风治疗干预的已确定途径的潜力.
主要方法:
- 使用Gpr30-Venus敲进小鼠研究GPR30表达.
- 进行初级细胞培养和新鲜分离的大脑壁画细胞.
- 评估二碳酸盐诱导的反应和GPR30依赖性.
- 评估了GPR30缺乏对小鼠缺血-再输液损伤的影响.
主要成果:
- 二碳酸盐离子激活G蛋白结合受体30 (GPR30),触发Gq结合反应.
- GPR30主要表达在脑壁细胞中,如Gpr30-金星模拟小鼠所示.
- 脑壁细胞中二碳酸盐诱导的反应依赖于GPR30.
- 缺乏GPR30的雄性小鼠表现出对缺血-再输液损伤的保护,并加速了血液流动的恢复.
结论:
- 在大脑壁画细胞中发现了一种新的二碳酸盐感应GPCR (GPR30).
- 证明了GPR30在调节大脑血流和减轻缺血-再输液损伤方面的作用.
- 突出了调节GPR30信号的治疗潜力,用于治疗缺血性中风.
- 提供了关于酸/传感GPCR及其在维持平衡中的作用的见解.
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