AUTHOR=Osna Natalia A. , Eguchi Akiko , Feldstein Ariel E. , Tsukamoto Hidekazu , Dagur Raghubendra S. , Ganesan Murali , New-Aaron Moses , Arumugam Madan Kumar , Chava Srinivas , Ribeiro Marcelle , Szabo Gyongyi , Mueller Sebastian , Wang Shijin , Chen Cheng , Weinman Steven A. , Kharbanda Kusum K. TITLE=Cell-to-Cell Communications in Alcohol-Associated Liver Disease JOURNAL=Frontiers in Physiology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2022.831004 DOI=10.3389/fphys.2022.831004 ISSN=1664-042X ABSTRACT=

This review covers some important new aspects of the alcohol-induced communications between liver parenchymal and non-parenchymal cells leading to liver injury development. The information exchange between various cell types may promote end-stage liver disease progression and involves multiple mechanisms, such as direct cell-to-cell interactions, extracellular vesicles (EVs) or chemokines, cytokines, and growth factors contained in extracellular fluids/cell culture supernatants. Here, we highlighted the role of EVs derived from alcohol-exposed hepatocytes (HCs) in activation of non-parenchymal cells, liver macrophages (LM), and hepatic stellate cells (HSC). The review also concentrates on EV-mediated crosstalk between liver parenchymal and non-parenchymal cells in the settings of HIV- and alcohol co-exposure. In addition, we overviewed the literature on the crosstalk between cell death pathways and inflammasome activation in alcohol-activated HCs and macrophages. Furthermore, we covered highly clinically relevant studies on the role of non-inflammatory factors, sinusoidal pressure (SP), and hepatic arterialization in alcohol-induced hepatic fibrogenesis. We strongly believe that the review will disclose major mechanisms of cell-to-cell communications pertained to alcohol-induced liver injury progression and will identify therapeutically important targets, which can be used for alcohol-associated liver disease (ALD) prevention.