非洲毒素B1诱导了Epstein-Barr病毒感染的和未感染的伯基特淋巴瘤细胞中微妙但协调的组织蛋白修饰
Thanos M Michailidis1, Laura Corveleyn2, Ruben Almey2
1Centre of Excellence in Mycotoxicology and Public Health, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium; Epigenomics and Mechanisms Branch, International Agency for Research on Cancer/World Health Organization, Lyon, France; CRIG, Cancer Research Institute Ghent, Ghent, Belgium.
Environment international
|September 28, 2025
概括
非洲毒素B1 (AFB1) 和爱斯坦-巴尔病毒 (EBV) 在伯基特淋巴瘤细胞中改变了组织蛋白修饰. AFB1增加了H3K27me3,而EBV微妙地改变了这种反应,影响了癌症风险.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 癌症生物学 癌症生物学
- 病毒学 病毒学
背景情况:
- 非洲毒素B1 (AFB1) 和爱斯坦-巴尔病毒 (EBV) 与癌症有关,特别是在特有地区.
- 它们对表观遗传环境的综合影响,特别是基因组转化后修饰 (hPTMs),尚未得到充分理解.
研究的目的:
- 研究AFB1暴露和EBV感染对伯基特淋巴瘤 (BL) 细胞中的hPTMs的影响.
- 了解随时间推移的动态表观遗传变化及其与AFB1和EBV的相关性.
主要方法:
- 采用了基于质谱的非定向分析.
- 采用时间间隔实验设计观察动态hPTM变化.
- 进行了相关性和基于网络的分析,以确定表观遗传中心.
主要成果:
- 在对AFB1.1的反应中观察到基因素甲基化和乙化模式的动态变化.
- AFB1暴露增加了H3K27me3水平,EBV感染显示出对抗作用.
- 检测到H4乙化和调节蛋白的变化,表明对染色质可访问性和转录的影响.
- 没有发现EBV感染细胞和未感染细胞在整体hPTM反应中的显著差异.
结论:
- AFB1诱导明显的表观遗传变化,包括增加H3K27me3,由EBV微妙调节.
- 表观遗传变化表明转录调节和染色质可访问性的潜在干扰.
- 对位点特异性变化和HPTM的治疗向进行进一步的研究是有必要的,以减轻癌症风险.
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