PHA-4/FoxA控制喉和喉外肠神经元的功能. 伊莱根斯 (elegans) 是一个词
Zion Walker1,2, Wen Xi Cao1,2, Eduardo Leyva-Diaz1,2,3
1Department of Biological Sciences.
bioRxiv : the preprint server for biology
|November 26, 2025
概括
转录因子PHA-4 (FoxA) 对于C. elegans中所有肠道神经系统神经元类型的终端分化和持续功能至关重要,超出其在肠道模式中的已知作用.
科学领域:
- 发展生物学 发展生物学
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
背景情况:
- 福克斯A转录因子对于各种动物物种的肠道组织模式至关重要.
- 福克斯A在成熟肠道神经系统 (ENS) 的终端分化和功能中的作用仍然在很大程度上未被探索.
- PHA-4是唯一的C. elegans FoxA同类物,已知作为前肠模式的先驱因素.
研究的目的:
- 调查PHA-4/FoxA在肠道神经系统 (ENS) 神经元的终端分化和维持中的功能,超出其在肠道模式中的既定作用.
- 在成熟的ENS神经元中识别PHA-4/FoxA的新角色和表达模式.
- 确定PHA-4/FoxA对于特定神经元类型的肠道行为功能控制的必要性.
主要方法:
- 对神经元特异性cis-regulatory等位基因的工程.
- 通过Cre介导的细胞特异性淘汰.
- 在转移后神经元中,经过Degron介导的,暂时控制的PHA-4/FoxA去除.
主要成果:
- PHA-4/FoxA在动物的整个生命周期内都需要启动终端分化和维持前肠关联肠道神经元的功能性质.
- 在外肠神经元 (AVL,DVB),GABAergic内部神经元 (RIS) 和peptidergic神经元 (PVT) 中发现了PHA-4/FoxA的新表达部位.
- 虽然对于AVL,DVB,RIS和PVT的发育规范并不重要,但PHA-4/FoxA对于它们控制肠道功能的能力至关重要,包括排便行为.
结论:
- 在C. elegans中,PHA-4/FoxA在终端分化和各种肠道神经元类型的功能维护中发挥着关键作用.
- PHA-4/FoxA是第一个被识别的转录因子,表达在所有不同类型的ENS神经元的正常功能中,并对其有必要.
- 这项研究扩展了已知的PHA-4/FoxA的功能,强调了它在肠道成熟神经系统中的重要性.
更多相关视频
07:31Using an Adapted Microfluidic Olfactory Chip for the Imaging of Neuronal Activity in Response to Pheromones in Male C. Elegans Head Neurons
Published on: September 7, 2017
8.5K
09:06Quantitative Approaches for Scoring in vivo Neuronal Aggregate and Organelle Extrusion in Large Exopher Vesicles in C. elegans
Published on: September 18, 2020
8.0K
相关概念视频
Pleiotropy
43.1K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
43.1K
Enteric Nervous System: Regulation of GI Motor Activity
1.6K
The Enteric Nervous System (ENS) plays a pivotal role in regulating gastrointestinal or GI motor activity. This complex network of nerves, deeply embedded within the gut wall, responds to changes in the gut environment and receives input from both the autonomic nervous system and the central nervous system. By doing so, the ENS operates various programs tailored to the body's nutritional status and needs.
During periods of fasting, the ENS initiates the migrating myoelectric complex, a...
During periods of fasting, the ENS initiates the migrating myoelectric complex, a...
1.6K
