TRPV4在小鼠的温度依赖性出汗中的参与
Makiko Kashio1,2,3, Sandra Derouiche1, Reiko U Yoshimoto4
1Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Japan.
eLife
|July 4, 2024
概括
暂时受体潜在化物4 (TRPV4) 通道对于温度依赖的出汗至关重要,与胺1 (ANO1) 相互作用以调节汗腺功能并保持脚摩擦.
科学领域:
- 生理学 生理学 生理学
- 分子生物学分子生物学
- 皮肤病学 皮肤病学
背景情况:
- 短暂受体潜在瓦尼洛伊德4 (TRPV4) 和阿诺胺1 (ANO1) 之间的相互作用与外分泌腺功能和潜在的出汗有关.
- TRPV4,ANO1和水-5 (AQP5) 在小鼠汗腺分泌细胞中同位.
研究的目的:
- 调查TRPV4在温度依赖性出汗中的作用及其与ANO1.1的相互作用.
- 探索TRPV4介导的出汗在保持摩擦中的功能意义.
主要方法:
- 在小鼠汗腺中,TRPV4,细胞卡素8,ANO1和AQP5的免疫组织化学同位化.
- 在野生型和TRPV4缺乏的小鼠中测量TRPV4依赖的细胞质Ca2+增加和乙胆刺激的出汗.
- 通过ANO1抑制剂对基础出汗抑制的评估以及薄荷醇对出汗的影响.
- 在滑坡上评估登能力,以评估摩擦维护.
- 对获得性异常性泛性无水症 (AIGA) 患者的人类皮肤样本中TRPV4表达的分析.
主要成果:
- 在小鼠的汗腺中,TRPV4依赖的Ca2+增加被薄荷抑制.
- 在野生类型但不是TRPV4缺乏的小鼠中,乙胆刺激的出汗是温度依赖的.
- 基础性出汗被ANO1抑制剂抑制.
- 与野生类型相比,TRPV4缺乏的小鼠表现出较低的爬坡能力.
- 在AIGA患者无水性皮肤中,TRPV4表达较低.
结论:
- 通过与ANO1.1的相互作用,TRPV4在温度依赖的出汗中发挥着重要作用.
- TRPV4/ANO1复合体是调节汗水的潜在治疗点.
- 通过TRPV4介导的出汗对于维持小鼠脚上的摩擦很重要.
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