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结直肠癌中肠道微生物组介导的遗传和表观遗传变化:特定人群的洞察力
Simona Turcu1,2, Florin Grama1,3, Maria Gazouli4
1Department of Surgery, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania.
Biomedicines
|September 27, 2025
概括
大肠直肠癌 (CRC) 是由肠道微生物和表观遗传学驱动的. 了解这些相互作用,包括像Fusobacterium nucleatum这样的特定细菌,是改善全球CRC管理和治疗结果的关键.
科学领域:
- 在瘤学瘤学.
- 微生物学 微生物学
- 遗传学 是一个遗传学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 结肠直肠癌 (CRC) 是一个重大的全球健康挑战,越来越多地关注其致病性,涉及肠道微生物群和表观遗传变化.
- 尽管治疗方面取得了进展,但CRC的临床管理仍然很复杂,罗马尼亚面临着相当大的负担,通常在晚期被诊断出来.
研究的目的:
- 探索遗传,环境和微生物决定因素在结直肠癌 (CRC) 病因学中的综合作用.
- 研究肠道微生物组失调和宿主表观遗传调节在CRC发育和进展中的复杂相互作用.
- 将CRC风险置于特定人群中的背景,使用罗马尼亚作为案例研究,考虑生活方式和微生物组证据.
主要方法:
- 对遗传倾向 (遗传综合征,GWAS位点) 和与CRC相关的生活方式风险因素的审查.
- 微生物组-表观基因组相互作用的分析,包括特定的细菌物种 (例如,Fusobacterium nucleatum,肠毒性细菌 Bacteroides fragilis,pks+ Escherichia coli) 和它们的致癌机制.
- 检查罗马尼亚的特定人口数据,包括代谢队列,以推断微生物组模式及其与CRC风险和异质性的关系.
主要成果:
- CRC的病因是多因素的,涉及遗传因素 (例如,SMAD7,TCF7L2),环境暴露和微生物影响.
- 肠道功能障碍症通过基因毒素,炎症信号 (NF-κB/STAT3),屏障功能障碍和表观遗传改造 (DNA甲基化,microRNAs) 促进癌症发生.
- 像Peptostreptococcus stomatis和Parvimonas micra这样的特定菌会影响瘤生物学和免疫反应,可能会影响治疗的疗效.
结论:
- 一个系统生物学方法是必不可少的,认识到微生物线索和宿主表观遗传控制协作驱动CRC启动,进展,转移和治疗反应.
- 了解人口特异性微生物组特征,如罗马尼亚推断的微生物组特征,对于有针对性的CRC预防和管理策略至关重要.
- 需要对新型瘤细菌及其机制进行进一步的研究,以开发更有效的结直肠癌治疗干预措施.
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