CHD8调节肠道上皮细胞功能,并通过肠-大脑轴影响与自闭症相关的行为
Ipsita Chatterjee1, Dmitriy Getselter1, Nasreen Ghanayem1
1Azrieli Faculty of Medicine, Bar Ilan University, Safed, 13215, Israel.
Translational psychiatry
|October 2, 2023
概括
染色体螺旋酶DNA结合蛋白 (CHD8) 突变会影响肠道功能,并可能导致自闭症行为. 在CHD8突变的小鼠中恢复肠道健康改善了社会行为,这表明肠道和自闭症之间存在联系.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学是一种遗传学.
- 胃肠病学 胃肠病学
背景情况:
- 自闭症谱系障碍 (ASD) 是一种神经发育状况,具有核心行为缺陷.
- 胃肠道 (GI) 问题在ASD个体中很普遍,特别是那些染色体螺旋酶DNA结合蛋白 (CHD8) 基因突变的人.
- 连接CHD8,肠道功能和ASD行为的确切机制仍然不清楚.
研究的目的:
- 研究CHD8在调节肠道功能的作用.
- 探索CHD8相关的肠道失调与自闭症相关行为之间的联系.
- 为了确定目标肠道健康是否可以改善小鼠模型中的行为表型.
主要方法:
- 采用了一种对Chd8 (Chd8L) 大异型具有哈普洛因不足的小鼠模型.
- 评估了肠道透性,肠上皮细胞转录组学,细胞计数 (,杯) 和肠道微生物负载.
- 给 Chd8L 脱素缺乏的小鼠进行了抗生素治疗.
- 评估与焦虑相关的社会行为.
主要成果:
- Chd8L的哈普洛缺陷导致肠道透性增加,肠道上皮质的转录基因变化,和杯细胞减少,以及更高的微生物负载.
- 肠道上皮细胞中的特定Chd8脱素缺乏与增加的焦虑和减少的细胞相关.
- 在Chd8L小鼠中,抗生素治疗显著减少了社会行为缺陷.
结论:
- CHD8在维持肠道屏障完整性和上皮细胞平衡中发挥着至关重要的作用.
- 由Chd8缺乏导致的肠道失调有助于与自闭症相关的行为表型.
- 针对胃肠道缺陷可能为自闭症的某些方面提供治疗途径.
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