基因失活TRPM4不会改变小鼠微质体的温度依赖的运动
Rei Nishimoto1, Yoshikazu Matsuoka2, Makoto Tominaga3
1Department of Anesthesiology and Resuscitology, Okayama University Medical School, Okayama, Japan; Department of Anesthesiology, National Hospital Organization Fukuyama Medical Center, Hiroshima, Japan.
The journal of physiological sciences : JPS
|March 15, 2026
概括
暂时受体潜能梅拉斯4 (TRPM4) 不会影响温度依赖的微质运动性. 研究表明,TRPM4对于中枢神经系统中这一关键免疫细胞功能是不可或缺的.
科学领域:
- 神经免疫学 神经免疫学
- 细胞生理学 细胞生理学
- 离子通道功能的功能
背景情况:
- 热敏性影响细胞功能,但其在微质等非神经元细胞中的分子基础尚不清楚.
- 微质,大脑的常驻免疫细胞,表现出温度依赖的运动性,此前与TRPV4离子通道相关.
- 由于缺乏合适的动物模型,TRPM4离子通道在微质热敏度中的作用以前没有被研究.
研究的目的:
- 为了研究短暂受体潜在拉斯4 (TRPM4) 离子通道在温度依赖的微质运动中的作用.
- 为了生成和利用功能性Trpm4-knockout (TRPM4KO) 鼠标来评估TRPM4的贡献.
主要方法:
- 使用CRISPR/Cas9基因组编辑生成功能性Trpm4淘汰赛小鼠.
- 主要微质细胞的隔离和培养.
- 在不同温度下对微质运动的时间间隔成像.
主要成果:
- 在实验室中,Trpm4缺乏并没有改变初级微质细胞的温度依赖的运动性.
- 在这些实验中,TRPM4淘汰赛小鼠被成功生成并用于这些实验.
结论:
- 短暂受体潜力梅拉斯4 (TRPM4) 离子通道对于温度依赖的微质运动性并不重要.
- TRPV4仍然是中介温度依赖的微质运动的主要离子通道,而TRPM4则发挥了不可或缺的作用.
相关概念视频
Thermosensation
Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
Body Temperature
Body temperature reflects the equilibrium between heat production and heat loss within the body. Most heat is generated by metabolically active tissues, particularly the liver, heart, brain, kidneys, and endocrine organs. At rest, skeletal muscles contribute 20–30% of total heat production, but during vigorous exercise, this can increase up to 30–40 times.
The average body temperature is approximately 37°C (98.6°F) and typically ranges from 36.1–37.2°C (97–99°F), remaining relatively stable...
The average body temperature is approximately 37°C (98.6°F) and typically ranges from 36.1–37.2°C (97–99°F), remaining relatively stable...


