1118-多巴胺驱动母体大脑的持久重塑 episode artwork

EPISODE · Jun 12, 2026 · 23 MIN

1118-多巴胺驱动母体大脑的持久重塑

from 聊聊Sci

这篇研究揭示了多巴胺在女性分娩后大脑长期重塑过程中的核心作用。研究人员通过对小鼠大脑进行跨区域转录组分析,发现背侧海马体(dHF)是受生育经验影响最显著的区域,表现出持久的基因表达变化和认知功能增强。实验证明,产后压力会干扰多巴胺的正常动态,进而破坏一种名为H3多巴胺化的组蛋白修饰,导致大脑无法维持育后特有的神经适应。通过化学遗传学手段调节处女鼠的多巴胺释放,研究者成功复现了类似的表观遗传和行为特征。此外,该研究还在人类大脑结构中发现了一致的转录模式。总之,这项成果阐明了多巴胺驱动的分子机制如何让女性大脑在分娩后实现长期的行为与生理演变。References:O’Chan J C, Di Salvo G, Cunningham A M, et al. Dopamine drives persistent remodelling of the maternal brain[J]. Nature, 2026: 1-11.前往小宇宙评论区与主播互动

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1118-多巴胺驱动母体大脑的持久重塑

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