在老鼠的habenula和杏仁体中,对慢性长期接触芬太尼自给药的转录反应
Robin Magnard1, Daianna Gonzalez-Padilla2, Ege A Yalcinbas2,3
1Department of Psychological and Brain Sciences, Krieger School of Arts and Sciences, Johns Hopkins University, Baltimore, MD, USA.
bioRxiv : the preprint server for biology
|December 15, 2025
概括
芬太尼改变了大鼠大脑区域的基因表达,影响了突触和代谢功能. 哈本和杏仁体中的这些分子变化可能与成风险和神经精神疾病有关.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 芬太尼是一种强大的合成阿片类药物,与广泛的过量服用有关.
- 芬太尼对大脑中对阿片类药物使用和戒断至关重要的脑部区域 - - 哈本和杏仁体的分子效应仍然在很大程度上未被描述.
研究的目的:
- 在慢性芬太尼自给药后,研究大鼠本核和杏仁核的转录基因变化.
- 在这些关键大脑区域中识别受 fentanyl 摄入影响的特定基因和细胞通路.
主要方法:
- 大量RNA测序用于在22-24天内静脉注射盐水或芬太尼自给药后,在老鼠的 habenula 和杏仁体中分析基因表达.
- 鉴定出差异表达基因 (DEGs),并进行功能丰富.
- 与来自动物和人类的单细胞RNA测序数据进行了整合,以将DEG与特定细胞类型和人类风险基因联系起来.
主要成果:
- 芬太尼的摄入诱导了453个DEGs在 habenula,与参与突触传输和离子导电性的上调基因.
- 杏仁体显示了3,041个与芬太尼相关的DEGs,与与代谢和膀功能相关的高调基因.
- 两个区域的下调基因都为细胞外矩阵功能进行了丰富,芬太尼DEG被映射到特定细胞类型和人类物质使用障碍风险基因中.
结论:
- 芬太尼显著改变了大鼠本核和杏仁核中的转录程序.
- 这些分子适应提供了对阿片类药物使用和戒断的神经生物学的见解.
- 这些发现将芬太尼诱导的变化与特定的细胞群和与人类成和神经精神疾病相关的基因联系起来.
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