在高甲基化结直肠癌中肠道微生物群的特征
Tatsushi Saito1, Hideaki Karasawa2, Kota Ouchi3
1Department of Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-Ku, Sendai, 980-8574, Japan.
International journal of clinical oncology
|June 16, 2025
概括
肠道微生物群,特别是Fusobacterium nucleatum,可能会影响高甲基化结直肠癌 (HMCC) 的发展. 这项研究将特定的细菌形状与HMCC联系起来,表明它在病变发生过程中发挥了作用.
科学领域:
- 在瘤学瘤学.
- 微生物学 微生物学
- 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:
- 表观遗传变化,如DNA甲基化,是结直肠癌 (CRC) 发展的关键.
- 人们越来越认识到肠道微生物群在CRC病变发生中的作用,但其与DNA甲基化之间的联系仍未得到充分研究.
研究的目的:
- 调查肠道微生物组成与高甲基化结直肠癌 (HMCC) 之间的关联.
- 描述HMCC的微生物特征,并探索与DNA甲基化模式的潜在联系.
主要方法:
- 来自86名零星CRC患者的便和瘤样本的分析.
- 基于16个CpG位点甲基化状态的HMCC定义.
- 16S rRNA基因测序用于肠道微生物群概况和fusobacterium nucleatum负载的qPCR.
主要成果:
- HMCC与近邻瘤,更大的直径,无差异组织学和BRAF突变有关.
- 在HMCC和低甲基化CRC (LMCC) 之间观察到84种细菌的相对丰度的显著差异,包括F. nucleatum.
- 瘤中的F.核负荷与便丰富度相关,并且在HMCC组织中得到丰富.
结论:
- 在HMCC中,肠道微生物群的特征不同.
- 像F. nucleatum这样的细菌可能通过DNA甲基化对HMCC病原体产生贡献.
- 需要进一步的研究来阐明微生物组在HMCC发育中的确切作用 (促进者或旁观者).
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