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微生物群的组成及其对结直肠癌中DNA甲基化的影响
Melva Gutierrez-Angulo1,2, Maria de la Luz Ayala-Madrigal2, Jose Miguel Moreno-Ortiz2
1Departamento de Ciencias de la Salud, Centro Universitario de los Altos, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico.
Frontiers in genetics
|August 24, 2023
概括
肠道微生物群组成的变化与结直肠癌 (CRC) 的DNA甲基化模式有关. 像Fusobacterium nucleatum和Hungatella hathewayi这样的特定细菌与改变的甲基化有关,可能会影响CRC预后.
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.
- 微生物学 微生物学
- 在瘤学瘤学.
背景情况:
- 大肠直肠癌 (CRC) 是由遗传,表观遗传和环境相互作用引起的.
- 基因甲基化,特别是在瘤抑制基因中,是CRC发育中的关键表观遗传变化.
- 胃肠道微生物群越来越多地被认为是影响CRC表观遗传变化的因素.
研究的目的:
- 探索肠道微生物群组成和结直肠癌中的DNA甲基化模式之间的关联.
- 确定与CRC中异常DNA甲基化相关的特定细菌物种.
- 了解微生物群诱导的表观遗传修饰在CRC预后中的潜在作用.
主要方法:
- 对肠道微生物群,DNA甲基化和结直肠癌现有文献的综述.
- 对报告CRC患者特定细菌丰富的研究进行分析.
- 鉴定到的细菌与CRC中特定基因高甲基化事件的相关性.
主要成果:
- 在CRC中观察到诸如*Bacteroides fragilis*,*Fusobacterium nucleatum*和*Streptococcus bovis*等细菌的丰富.
- * Fusobacterium nucleatum * 与 CpG 岛屿甲基化器表型和超甲基化在 * MLH1 * 和 * CDKN2A * 等基因中有关.
- *Hungatella hathewayi*与包括*SOX11*,*THBD*和*APC*在内的基因中的高甲基化有关.
结论:
- 肠道微生物群的组成可能会影响结直肠癌中的DNA甲基化模式.
- 特定的细菌物种与CRC中不同的基因过甲基化概况有关.
- 调节肠道微生物群可能为改变DNA甲基化和改善CRC预后提供一种新的策略.
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