通过E2F1-CD24转录轴驱动的Clonorchis sinensis肝癌发生:机制和治疗影响
Wen-Min Lu1, Jin Yan2, Zhao-Ji Liu2
1Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China.
Parasites & vectors
|August 20, 2025
概括
通过E2F1增加CD24的表达,Clonorchis sinensis感染促进肝细胞癌 (HCC). 这种寄生性致癌机制使CD24成为HCC的预后生物标志物和治疗点.
科学领域:
- 肝胆细胞瘤
- 寄生病
- 分子瘤学
背景情况:
- 肝细胞癌 (HCC) 是全球严重的健康问题,中国广西地区的死亡率尤为高.
- 这一地区的HCC发病率很高,与特有Clonorchis sinensis (C. sinensis) 感染相吻合.
- 在HCC组织中过度表达分化24 (CD24) 表明它在疾病发病过程中的潜在作用.
研究的目的:
- 研究由C. sinensis分泌产物 (CsESPs) 驱动的致癌机制.
- 阐明CD24在C. sinensis相关的HCC进展中的作用.
- 建立寄生虫感染,CD24和肝细胞癌的发展之间的联系.
主要方法:
- 在C. sinensis相关的HCC中对CD24表达的临床队列分析.
- 对预后意义和免疫微环境的生物信息验证 (GEPIA,UALCAN,TIMER).
- 功能性测试 (qPCR,西部抹杀,CCK-8流细胞计) 和机制性研究 (ChIP,双化酶) 以评估CSESP对CD24,增殖,亡和E2F1活性的影响.
- 在PBMC- HCC共培养中,通过siRNA介导的CD24敲除和免疫检查点 (CTLA-4,LAG-3) 的评估.
主要成果:
- 在HCC中证实显著的CD24上调,特别是在C. sinensis感染病例中,与预后不佳相关.
- 通过增强CD24表达,CSESPs促进HCC细胞增殖并抑制细胞亡.
- 在CsESPs暴露时,E2F1直接激活CD24转录;CD24倒置逆转瘤效应.
- CsESPs增加免疫检查点表达 (CTLA-4,LAG-3),这种效应通过CD24敲击减轻.
结论:
- 确立了一种新的寄生性致癌途径:C. sinensis通过E2F1-介导的CD24转录激活促进HCC.
- 在寄生虫相关的HCC中,CD24作为预后生物标志物和潜在的治疗点.
- 这些发现表明针对C. sinensis- HCC- CD24轴的组合免疫治疗策略的可能性.
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