3D架构和触摸检测的双细胞机制在机械感应体细胞中
Yury A Nikolaev1, Luke H Ziolkowski1, Song Pang2
1Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT 06510, USA.
Science advances
|September 13, 2023
概括
鸟类格兰德里体中的机械敏感层状细胞 (LCs) 作为生理触觉传感器. 这些细胞与 afferents 一起形成一个复杂的结构,使微妙的触觉.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
背景情况:
- 机械感知体对于检测脊椎动物的触摸和振动至关重要.
- 这些细胞体内的状细胞 (LCs) 的精确超结构和功能在很大程度上是未知的.
- 了解这些结构是解读感官知觉的关键.
研究的目的:
- 为了阐明鸟类Meissner (Grandry) 粒体的三维结构.
- 研究状细胞 (LCs) 在机械传导和触摸检测中的作用.
- 了解底层的细微触摸编码的双细胞感官机制.
主要方法:
- 增强的聚焦离子束扫描电子显微镜 (FIB-SEM) 用于高分辨率成像.
- 基于机器学习的细分用于详细的结构分析.
- 来自 afferents 和叶片细胞 (LCs) 的同时电生理记录.
主要成果:
- 揭示了格兰德里体的详细三维架构,显示了交叉的状细胞 (LC) 和 afferent 终端.
- 机械敏感层状细胞 (LCs) 被证明可以通过流来触发 afferents 中的动作潜力.
- 状细胞 (LCs) 作为生理触觉传感器,有助于微妙的感觉编码.
结论:
- 鸟类格兰德里体细胞具有复杂的双细胞感官机制,涉及 afferents 和叶片细胞 (LC).
- 状细胞 (LCs) 是触摸检测中的积极参与者,作为主要机械传感器.
- 这种复杂的结构促进了各种触摸子模式的细微编码.
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