中华医学杂志
2021年 · 第101卷第40期
中华医学杂志
肝脏流域学说下的控血新理念:适时分合肝脏控血技术
缺铁性贫血规范化诊治的若干问题
大规模多场景移动实验室新型冠状病毒核酸应急检测专家共识
儿童膀胱过度活动症诊断和治疗中国专家共识
中国流感疫苗预防接种技术指南(2021—2022)
不同特征儿童上气道结构发育情况分析
基于基因表达数据库分析非酒精性脂肪肝炎的核心基因及分子机制
经导管主动脉瓣置入术围手术期完全性房室传导阻滞发生及治疗分析
环状RNA_0023990/微小RNA-873-5p/ANXA2对甲状腺癌放射敏感性的影响及机制研究
基于期望最大化算法建立我国儿童青少年维生素A参考区间
腹膜外有无专用通道装置单切口机器人辅助腹腔镜根治性前列腺切除术的疗效比较
同胞兄弟共患Imerslund-Gräsbeck综合征的临床分析
第547例 淋巴结肿大—皮疹—贫血—急性肾损伤—心肌梗死
父亲染色体倒位导致胎儿14号染色体长臂重复一例
源自非酒精性脂肪肝炎患者不可逆损伤肝的肝脏类器官的功能鉴定研究
Nonalcoholic steatohepatitis (NASH) will be the leading cause of liver transplantation in the United States and is associated with increased mortality from SARS-CoV-2 pneumonia. There is currently no FDA-approved drug available to slow down the pathological progression of NASH, and since animal models cannot fully reproduce the pathology of human NASH, a novel experimental method that can bridge the current gap in human cognition of NASH pathology is yet to be developed. In this study, stem cells were isolated from irreversibly damaged livers of end-stage NASH patients, which proliferated, underwent hepatic differentiation and exhibited extensive ductal organoid characteristics. Transcriptomic analysis of liver organoids from NASH patients revealed significant upregulation of both pro-inflammatory cytokines and cytochrome P450-related pathways and known markers of liver fibrosis and tumor, to a patient-specific degree. Functionally, NASH liver organoids exhibit decreased passaging and growth capacity and distinctive features of NASH liver, including decreased albumin production, increased lipid accumulation induced by free fatty acids, increased sensitivity to apoptotic stimulation, and enhanced cytochrome P450 metabolism. Following liver differentiation, the ability of NASH liver organoids to dedifferentiate back to the bile duct state is reduced, which is consistent with the known decrease in NASH liver regeneration capacity. The present study also found that NASH liver organoids are more susceptible to SARS-CoV-2 or vesicular stomatitis virus challenge, accompanied by upregulation of ubiquitin D expression. The results of this study suggest that extracting stem cells directly from the irreversibly damaged liver of NASH patients and culturing liver organoids opens up new experimental pathways for personalized disease modeling and drug development, and may contribute to the study of slowing down NASH disease progression and counteracting NASH-related SARS-CoV-2 effects.
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