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International Journal Of Bilogical Sciences

.: Home > International Journal Of Bilogical Sciences > 2016 > Volume 12 Number 8 > Lipeng Tian,1 Abhijeet Deshmukh,1 Neha Prasad,1 and Yoon-Young Jang 1,2

Alcohol Increases Liver Progenitor Populations and Induces Disease Phenotypes in Human IPSC-Derived Mature Stage Hepatic Cells

Lipeng Tian,1 Abhijeet Deshmukh,1 Neha Prasad,1 and Yoon-Young Jang 1,2
1 Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center; 2 Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.  Corresponding author: Yoon-Young Jang, M.D., Ph.D. 1550 Orleans Street, CRB2 Rm552, Baltimore, MD 21231. Office (410)-502-8195 Email: yjang3@jhmi.edu
Abstract :

Alcohol consumption has long been a global problem affecting human health, and has been found to influence both fetal and adult liver functions. However, how alcohol affects human liver development and liver progenitor cells remains largely unknown. Here, we used human induced pluripotent stem cells (iPSCs) as a model to examine the effects of alcohol, on multi-stage hepatic cells including hepatic progenitors, early and mature hepatocyte-like cells derived from human iPSCs. While alcohol has little effect on endoderm development from iPSCs, it reduces formation of hepatic progenitor cells during early hepatic specification. The proliferative activities of early and mature hepatocyte-like cells are significantly decreased after alcohol exposure. Importantly, at a mature stage of hepatocyte-like cells, alcohol treatment increases two liver progenitor subsets, causes oxidative mitochondrial injury and results in liver disease phenotypes (i.e., steatosis and hepatocellular carcinoma associated markers) in a dose dependent manner. Some of the phenotypes were significantly improved by antioxidant treatment. This report suggests that fetal alcohol exposure may impair generation of hepatic progenitors at early stage of hepatic specification and decrease proliferation of fetal hepatocytes; meanwhile alcohol injury in post-natal or mature stage human liver may contribute to disease phenotypes. This human iPSC model of alcohol-induced liver injury can be highly valuable for investigating alcoholic injury in the fetus as well as understanding the pathogenesis and ultimately developing effective treatment for alcoholic liver disease in adults.

Keywords :
Induced pluripotent stem cells, hepatic progenitor cells, alcoholic liver disease, acquired liver disease, fetal alcohol injury, liver cancer.

Date Deposited : 07 Nov 2016 19:16

Last Modified : 07 Nov 2016 19:16

Official URL: http://www.ijbs.com/v12i9

Volume 12, Number 8, July 2016

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