早期的生活逆境通过性取决于肠道质中的异型开关促进胃肠道功能障碍
bioRxiv : the preprint server for biology
|June 19, 2024
概括
早期的生活压力和生物性影响肠道质细胞,改变肠-大脑相互作用. 这项研究揭示了肠道质细胞是影响肠-大脑相互作用 (DGBI) 障碍易感性的关键细胞.
科学领域:
- 神经胃肠病学 神经胃肠病学
- 肠-大脑轴研究研究
- 疾病的细胞和分子机制.
背景情况:
- 肠-大脑相互作用障碍 (DGBI) 是普遍存在的,其特点是肠道运动问题和疼痛,其起源不清楚.
- 风险因素,如生命早期的压力和生物学性别,通过改变肠-大脑电路,与DGBI的发展有关,但具体的细胞标仍然未被确定.
研究的目的:
- 调查肠道内底层DGBI发育的细胞机制,重点关注早期生活压力和生物性之间的相互作用.
- 确定肠道中受这些危险因素严重影响的特定细胞类型.
主要方法:
- 利用早期生活压力的临床前模型来检查肠道中的细胞反应.
- 分析了肠道质中的基因表达和功能变化,考虑到生物性别差异.
- 研究了前列腺素和内分泌大麻素信号通路在肠道内核中的作用.
主要成果:
- 肠质被确定为一个中央细胞组件,其中压力和生物性别汇聚以影响DGBI易感性.
- 肠道质在与沟通和炎症相关的基因和功能中表现出显著的性二态.
- 早期的生活压力诱导了肠道质中的性别特异性变化,导致男性到女性的表型切换,随后是模仿人类DGBI的肠道生理变化.
结论:
- 肠道质细胞作为DGBI风险因素的关键细胞整合部位,将压力和性影响转化为改变的肠道生理学.
- 质前列腺素和内分泌大麻素信号的改变部分介导这些压力诱导的效应.
- 准质信号通路为开发DGBI的性别特异性治疗策略提供了一个有希望的途径.
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