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低剂量饮食营养物质混合物改善了多个自闭症小鼠模型中的行为缺陷
Tzyy-Nan Huang1, Ming-Hui Lin1,2, Tsan-Ting Hsu1
1Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan, Republic of China.
PLoS biology
|December 2, 2025
概括
补充小鼠的低剂量营养物质如,分支链氨基酸 (BCAA) 和血清改善了自闭症谱系障碍 (ASD) 模型中的社会行为和神经连接. 这种营养组合显示出协同效应,提供了潜在的治疗途径.
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.
- 营养科学 营养科学
背景情况:
- 自闭症谱系障碍 (ASD) 是一种复杂的神经发育状况,具有遗传和环境影响.
- 营养缺乏和代谢变化越来越多地被认为是导致ASD的环境因素.
- 异常的神经连接,特别是在像底侧杏仁体 (BLA) 这样的区域,与自闭症相关的社会缺陷有关.
研究的目的:
- 研究营养补充对突触蛋白质组,神经元组合和ASD小鼠模型中的社会行为对营养补充的影响.
- 为了确定低剂量,分支链氨基酸 (BCAA) 和血清的组合是否可以改善与ASD相关的表型.
- 探索营养尾酒对BLA神经活动和连接性的影响.
主要方法:
- 使用了Tbr1+/-小鼠,这是ASD的验证模型,与Nf1+/-和Cttnbp2+/M120I小鼠模型一起使用.
- 给小鼠服用含有,BCAA和血清素的营养尾酒7天.
- 分析了蛋白质组的变化,专注于与突触相关的蛋白质.
- 使用电生理学技术测量了BLA中的神经活动和连接性.
- 在接受治疗的小鼠中评估了社会行为和关联记忆.
主要成果:
- 营养尾酒补充剂增加了蛋白质组中的突触相关蛋白质.
- Tbr1的哈普隆缺陷导致BLA神经元的过度激活和过度连接,通过营养补充得到正常化.
- 低剂量单个营养素没有影响,但这种组合显著改善了Tbr1+/-小鼠的社会行为和关联记忆.
- 营养补充剂混合物还改善了Nf1+/-和Cttnbp2+/M120I小鼠的社会行为.
结论:
- 饮食补充剂中,BCAA和血清素的组合可以调节BLA中的突触功能和神经连接.
- 这种营养组合显示出协同效应,改善了多个ASD小鼠模型中的社会行为和认知缺陷.
- 营养补充是缓解ASD核心行为和神经连接缺陷的安全和可访问的策略.
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