ATOH8 通过抑制肝细胞中 pyroptotic 途径来促进 HBV 免疫耐受性
Xiaofei Liu1, Zhenyu Fan1, Liping Chen2
1Department of Gastroenterology and Hepatology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, P.R. China.
Molecular medicine reports
|May 26, 2023
概括
乙型肝炎病毒 (HBV) 的免疫耐受性是复杂的. 这项研究揭示了ATOH8通过抑制肝细胞热致死促进HBV免疫逃生,为肝脏疾病机制提供了新的见解.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 乙型肝炎病毒 (HBV) 免疫耐受性的机制尚未完全理解.
- 已知ATOH8在肝瘤免疫微环境中的作用,但其特定的免疫调节机制需要进一步研究.
- 肝炎病毒和肝细胞烧死之间的联系是有争议的,与C型肝炎病毒 (HCV) 感染不同.
研究的目的:
- 为了研究ATOH8是否通过调节肝细胞热致死来影响HBV活性.
- 阐明与HBV相关的ATOH8在免疫调节中的机制.
- 为了更深入地了解HBV诱导的肝脏入侵.
主要方法:
- 在HBV患者的组织和PBMC中使用qPCR和西部涂抹评估与火灭相关的分子 (GSDMD,Caspase-1).
- 在HepG2.2.15和Huh7细胞中通过lentiviral载体过度表达ATOH8.
- 使用qPCR和ELISA量化HBVDNA,乙型肝炎表面抗原和炎症因子 (TNF-α,INF-α,IL-18,IL-1β).
主要成果:
- 与正常样本相比,HBV患者样本表现出较高的热致死标志物.
- 在HepG2.2.15细胞中ATOH8过度表达与增加的HBV水平相关,但降低了热亡标志物 (GSDMD,Caspase-1).
- 在Huh7细胞中ATOH8的过度表达也减少了热致死标志物和增加了炎症因子 (INF-α,TNF-α,IL-18,IL-1β).
结论:
- ATOH8在HBV免疫调节中发挥作用.
- ATOH8 抑制肝细胞热,有助于HBV免疫逃生.
- 这一发现丰富了对HBV病原和免疫逃避策略的理解.
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