再生(生物学)
肝再生
生理学
疾病
肝病
医学
生物信息学
生物
重症监护医学
细胞生物学
病理
内科学
作者
Regeant Panday,Chase P. Monckton,Salman R. Khetani
出处
期刊:Seminars in Liver Disease
[Georg Thieme Verlag KG]
日期:2022-02-01
卷期号:42 (01): 001-016
被引量:22
标识
DOI:10.1055/s-0041-1742279
摘要
As blood flows from the portal triad to the central vein, cell-mediated depletion establishes gradients of soluble factors such as oxygen, nutrients, and hormones, which act through molecular pathways (e.g., Wnt/β-catenin, hedgehog) to spatially regulate hepatocyte functions along the sinusoid. Such "zonation" can lead to the compartmentalized initiation of several liver diseases, including alcoholic/non-alcoholic fatty liver diseases, chemical/drug-induced toxicity, and hepatocellular carcinoma, and can also modulate liver regeneration. Transgenic rodent models provide valuable information on the key molecular regulators of zonation, while in vitro models allow for subjecting cells to precisely controlled factor gradients and elucidating species-specific differences in zonation. Here, we discuss the latest advances in both in vivo and in vitro models of liver zonation and pending questions to be addressed moving forward. Ultimately, obtaining a deeper understanding of zonation can lead to the development of more effective therapeutics for liver diseases, microphysiological systems, and scalable cell-based therapies.
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