皮肤TRPV3在小鼠TMEM79调节的温度检测中的参与
Jing Lei1,2,3, Reiko U Yoshimoto4, Takeshi Matsui5,6,7
1Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, 444-8787, Okazaki, Japan.
Nature communications
|July 20, 2023
概括
跨膜蛋白79 (TMEM79) 在皮肤角质细胞中负面调节TRPV3通道. 缺少TMEM79可增强TRPV3功能,影响小鼠的热感和温度偏好.
科学领域:
- 离子通道调节 离子通道调节
- 哺乳动物生理学 哺乳动物生理学
- 细胞生物学 细胞生物学
背景情况:
- 短暂受体潜在化物3 (TRPV3) 是一种热激活的阳离子通道,主要存在于皮肤角质细胞中,对热感应至关重要.
- 以前的研究表明TRPV3缺乏的小鼠的热感受受损.
研究的目的:
- 为了确定TRPV3通道功能的新型调节者.
- 在体外和体内阐明TMEM79和TRPV3之间的相互作用.
- 研究TMEM79在热传感中的作用.
主要方法:
- 在HEK293T细胞中表达TMEM79和TRPV3的异质表达.
- 分析TRPV3介导的电流和 (Ca2+) 在初级小鼠角质细胞的流入.
- 对缺乏TMEM79的小鼠进行表型分析,包括温度偏好.
主要成果:
- TMEM79抑制了TRPV3介导的电流和的流入.
- TMEM79促进TRPV3在溶酶体中的降解,并调节其细胞局部.
- 在TMEM79缺乏的角质细胞中,TRPV3功能和流量得到增强.
- 缺少TMEM79的小鼠表现出改变的温度偏好,表明热感受受损.
结论:
- TMEM79作为TRPV3频道活动的负调节器.
- TMEM79和TRPV3之间的相互作用对于适当的热感应至关重要.
- 这些发现揭示了皮肤生理学中TRPV3的新型调节机制.
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