抗病毒疗法通过抑制乙型肝炎病毒复制来减少肝细胞癌,可以改善ER压力,线粒体和代谢功能障碍,并在单个HBV转基因和miR-122的杂交小鼠中降低p62
Yuh-Jin Liang1,2,3, Yu-Wei Chiou1, Abby Pei-Ting Chiu4,5
1Translational Research Division, Medical Research Department, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
Journal of medical virology
|December 18, 2023
概括
乙型肝炎病毒 (HBV) 导致肝损伤和肝细胞癌 (HCC),即使在正常的ALT水平. 抗病毒疗法通过改善自和减少肝损伤,有望减少HCC发病率.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 病毒学 病毒学
- 在瘤学瘤学.
背景情况:
- 乙型肝炎病毒 (HBV) 复制与自有关.
- 核酸类似物 (NUCs) 抑制HBV复制并降低肝细胞癌 (HCC) 的发生率.
- 在慢性乙型肝炎 (CHB) 患者中NUCs的作用与正常或极小升高的氨酸转移酶 (ALT) 患者的作用是有争议的.
研究的目的:
- 开发和利用一种新的动物模型来研究HBV诱导的HCC在正常ALT水平的背景下.
- 研究HBV对肝脏新陈代谢,自和HCC发育的影响.
- 在这个模型中评估抗病毒治疗在预防HCC方面的疗效.
主要方法:
- 通过将HBV转基因小鼠与miR-122淘汰小鼠交叉繁殖,生成混合小鼠模型.
- 分析肝脏病理,包括肥胖症,纤维化和HCC发病率.
- 代谢学和微阵列分析以确定代谢和分子特征.
- 评估自标志物 (p62) 和内质网膜 (ER) 应激通路 (ATF4,CHOP).
- 对抗病毒治疗对HCC发病率和分子通路的影响的评估.
主要成果:
- 杂交小鼠模型在瘤形成前具有正常ALT水平的高发病率 (89%).
- 关键发现包括早期的肝硬化,渐进性肝纤维化,晚期自功能受损和脂质代谢失调.
- 代谢和微阵列分析揭示了炎症,基因组不稳定,华堡效应和能量代谢受损的特征.
- 抗病毒治疗使HCC的发病率降低了30-35%,并且与ATF4激活,p62清除和抑制CHOP介导的亡有关.
结论:
- 肝炎病毒复制可能会导致严重的肝损伤,并促进HCC的发展,即使在正常的ALT水平.
- 这项研究强调了ER压力的作用,减少了miR-122,线粒体功能障碍,以及在HBV病变发生过程中的自功能受损.
- 抗病毒疗法可以通过抑制HBV复制和改善细胞应激反应来减轻这些病理过程.
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