结肠直肠癌生物膜的组成揭示了不同的细菌物种签名
Manish Kushwaha1,2, Nishu Dalal3, Shubham Chaudhary4
1Gene Regulation Laboratory, National Institute of Immunology, New Delhi, 110067, India.
Applied microbiology and biotechnology
|July 2, 2025
概括
印度结肠直肠癌 (CRC) 患者在肠道生物膜中显示出明显的微生物变化. 与瘤相关的生物膜含有较高水平的大肠杆菌,克莱布西拉肺炎和细菌菌,这表明显著的生物失调.
科学领域:
- 微生物学 微生物学
- 在瘤学瘤学.
- 胃肠病学 胃肠病学
背景情况:
- 结肠直肠癌 (CRC) 是印度的一个重大健康问题,发病率越来越高.
- 人的结肠含有微生物生物膜,这些生物膜越来越多地与CRC的进展有关.
- 了解印度CRC患者中这些生物膜的特定微生物组成至关重要.
研究的目的:
- 调查印度CRC患者结肠生物膜的微生物组成.
- 与相邻的非瘤组织相比,识别与瘤组织相关的特定细菌物种.
主要方法:
- 从印度新德里的CRC患者获得了结肠直肠活检.
- 光在位杂交 (FISH) 用于分析生物膜内的细菌群体.
- 在组织处理和杂交后,用于信号可视化的是共聚焦显微镜.
主要成果:
- 在与瘤相关的生物膜中观察到明显的微生物模式.
- 在瘤生物膜中发现了埃舍里希亚大肠杆菌,Klebsiella pneumoniae和Bacteroides fragilis的密度增加.
- 在瘤生物膜中,Fusobacterium nucleatum和pks阳性大肠杆菌的频率较低.
结论:
- 在CRC组织中证实了显著的微生物失调和侵入性生物膜形成.
- 特定的细菌丰富物突出显示了CRC病变发生中的潜在作用.
- 对生物膜成分的洞察力可以为印度和全球的CRC风险降低提供有针对性的干预措施.
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