空间转录组学揭示了阿弗拉托克素B1驱动的胃癌的交互网络:转录组和门德尔随机化的多组学集成
Yong-Le Li1, Cong Liu2, Meng Tang1
1School of Clinical Medicine, School of Basic Medical Sciences, Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China.
Ecotoxicology and environmental safety
|August 24, 2025
概括
非洲毒素B1 (AFB1) 通过向CCNE1/2等关键基因驱动胃癌. 这项研究绘制了AFB1
科学领域:
- 环境毒理学
- 分子瘤学
- 癌症研究
背景情况:
- 环境污染物,尤其是真菌毒素,对健康构成重大风险.
- 虽然Aflatoxin B1 (AFB1) 是一种强有力的致癌物质,但其在胃癌发生中的作用尚未完全理解.
研究的目的:
- 阐明AFB1诱导的胃癌的分子机制.
- 确定AFB1针对的核心调节基因.
- 在胃癌中绘制AFB1的多组调节网络.
主要方法:
- 分子对接模拟以评估AFB1与目标基因的结合亲和力.
- 人胃癌组织的单细胞RNA测序 (scRNA-seq).
- 空间转录学 (10X Visium) 分析瘤微环境中的基因表达.
主要成果:
- AFB1针对五个核心调节基因, 调节CCNE1和CCNE2.
- MAPK3对AFB1的结合亲和度最高.
- 在免疫细胞,特别是T细胞中观察到细胞类型特异性基因表达.
结论:
- 通过向特定的基因,AFB1协同促进胃癌的进展.
- 构建了AFB1诱导的胃癌的多层分子调节图.
- 这项研究为环境毒理学中多种毒素的整合建立了一个新的范例.
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