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Apoptosis is known to be a primary cause of liver damage, and it can be induced by either intrinsic signaling pathways or by reactive oxygen species (ROS). Adenosine A1 receptors (ADORA1) are known to be involved in ethanol metabolism; however, underlying mechanism is not well understood. For investigating how the intrinsic ADORA1 function in ethanol metabolism in normal human hepatocytes without interference by extrinsic molecules, primary hepatocytes pose a challenge, due to unavoidable contamination by other kinds of cells in the liver. Also, they are difficult to culture stably. As a novel alternative, hepatocytes derived from human-induced pluripotent stem cells were employed because they display similar function to primary hepatocytes and they can be stably cultured. The dynamics and integrity of signal transduction mechanisms were investigated by following chronological changes in gene expression. This shed light on how and when the ADORA1 function and on causal relationships between the pathways and clinical symptoms. The findings of the present study shows that ADORA1 are most activated soon after exposure to ethanol, and transfection of small interfering RNA targeting ADORA1-messenger-RNA (ADORA1-siRNA) into the hepatocytes significantly suppresses production of actin protein and ROS. It suggests that ADORA1 in the liver contribute to apoptosis in acute alcoholism through both intrinsic pathway and ROS activity. Also, actin that is abundant in the cells could be an appropriate biomarker evaluating hepatic function status.<\/jats:p>","DOI":"10.1042\/bsr20231682","type":"journal-article","created":{"date-parts":[[2024,2,29]],"date-time":"2024-02-29T08:00:33Z","timestamp":1709193633000},"update-policy":"https:\/\/doi.org\/10.1042\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Elucidating the role of intrinsic adenosine A1 receptors in acute alcoholism using human-induced pluripotent stem cell-derived hepatocytes"],"prefix":"10.1042","volume":"44","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0320-1639","authenticated-orcid":false,"given":"Takako","family":"Nagata","sequence":"first","affiliation":[{"name":"1NT Biologics, Gaithersburg, MD, U.S.A."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuning\u00a0George","family":"Huang","sequence":"additional","affiliation":[{"name":"2National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, U.S.A."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"288","published-online":{"date-parts":[[2024,3,21]]},"reference":[{"key":"2024032106412654100_B1","doi-asserted-by":"publisher","first-page":"1029","DOI":"10.1111\/j.1478-3231.2006.01339.x","article-title":"How to modulate inflammatory cytokines in liver diseases","volume":"26","author":"Tilg","year":"2006","journal-title":"Liver Int."},{"key":"2024032106412654100_B2","doi-asserted-by":"publisher","first-page":"1","DOI":"10.3390\/biom10101433","article-title":"cAMP signaling in pathobiology of alcohol associated liver disease","volume":"10","author":"Elnagdy","year":"2020","journal-title":"Biomolecules"},{"key":"2024032106412654100_B3","doi-asserted-by":"publisher","first-page":"31","DOI":"10.1016\/j.ejphar.2004.12.006","article-title":"Pro- and anti-apoptotic roles of c-Jun N-terminal kinase (JNK) in ethanol and acetaldehyde exposed rat hepatocytes","volume":"508","author":"Lee","year":"2005","journal-title":"Eur. 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