对皮肤抚摸敏感的扩展性机理受体的遗传鉴定
Ling Bai1,2, Brendan P Lehnert1, Junwei Liu3
1Department of Neurobiology, Howard Hughes Medical Institute, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115.
Cell
|December 22, 2015
概括
研究人员发现了难以捉摸的Aβ场LTMRs,这是毛发皮肤中主要的低值机械受体 (LTMR) 亚型. 这些神经元形成了无数的外围末端, 对于轻轻的皮肤抚摸至关重要.
科学领域:
- 神经科学
- 身体的感知
- 机械生物学
背景情况:
- 触觉依赖于具有多样性形态的低值机械受体 (LTMR).
- 与毛囊相关的神经纤维重链阳性环周末是丰富的,但不太了解.
研究的目的:
- 在哺乳动物毛发皮肤中对神经纤维重链正环末进行基因检查和功能性鉴定.
- 阐明这些特定的LTMR在触觉中的作用.
主要方法:
- 哺乳动物皮肤形态的调查.
- 针对神经元质疑的基因策略.
- 在体内电生理记录.
- 接收领域的映射.
主要成果:
- 这些结尾被确定为Aβ场LTMRs,
- Aβ场-LTMR对轻微的皮肤抚摸非常敏感,但对头发的偏移不敏感.
- 这些LTMR具有大,斑点的受体场,并编码有害的皮肤痕.
- 个别的Aβ场LTMR形成多达180个环形末端,代表了已知的最广泛的LTMR.
结论:
- Aβ场LTMR是一种主要的哺乳动物LTMR亚型,在毛发皮肤中形成环形末端.
- 它们对温和抚摸的敏感性来自于多个低灵敏度的周边末端的整合.
- 这项研究阐明了显著的LTMR群体在触觉上的功能和形态.
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