Fusobacterium nucleatum通过增加PVT1表达来增强结肠癌中的氧沙抗性
Kangqi Gao1,2,3, Jianqing Zhang1,4, Chen Liu1,4
1The Department of General Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, 050000, China.
Journal of translational medicine
|October 17, 2025
概括
在结直肠癌 (CRC) 中的fusobacterium nucleatum (Fn) 感染通过增加PVT1,稳定ATAD3A并抑制细胞死亡,从而促进oxaliplatin抵抗. 准PVT1可以克服Fn诱导的化学抵抗.
科学领域:
- 在瘤学瘤学.
- 微生物学 微生物学
- 分子生物学分子生物学
背景情况:
- 大肠直肠癌 (CRC) 影响大约50%的患者具有高水平的Fusobacterium nucleatum (Fn),与化疗耐药性有关.
- 由于Fn诱导的化学抵抗的确切机制尚不清楚,因此需要进一步研究.
研究的目的:
- 阐明Fusobacterium nucleatum (Fn) 有助于结直肠癌 (CRC) 抗氧化的分子机制.
- 为了确定克服Fn介导化学抵抗的潜在治疗点.
主要方法:
- 在使用qPCR的80个人类结肠癌样本中,与临床参数相关的Fn丰度.
- 通过克隆形成,EDU增殖和亡测定,评估Fn对结肠癌细胞对氧化敏感性的影响.
- 利用RNA测序来识别Fn感染细胞中的差异表达基因,并探索PVT1-ATAD3A相互作用和TLR4/NF-κB通路.
主要成果:
- Fn丰度与晚期临床阶段和减少无复发存活率 (RFS) 相相关.
- Fn改变了结肠癌细胞对甲的敏感性.
- Fn感染上调长非编码RNA PVT1,它与ATAD3A结合,防止其无化并抑制ER压力介导的细胞死亡. 通过TLR4/NF-κB通路调节PVT1的表达.
结论:
- Fusobacterium nucleatum通过TLR4/NF-κB通路对PVT1进行上调,从而促进结直肠癌中抗氧化的耐药性,从而导致ATAD3A的稳定和抑制细胞死亡.
- 在结肠直肠癌中,PVT1代表了一个潜在的治疗标,以抵消Fusobacterium核驱动的氧沙抗性.
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