PMID- 23081841 OWN - NLM STAT- MEDLINE DCOM- 20130423 LR - 20211021 IS - 1527-3350 (Electronic) IS - 0270-9139 (Print) IS - 0270-9139 (Linking) VI - 57 IP - 3 DP - 2013 Mar TI - beta-catenin regulates innate and adaptive immunity in mouse liver ischemia-reperfusion injury. PG - 1203-14 LID - 10.1002/hep.26100 [doi] AB - Dendritic cells (DCs) are critical mediators of immune responses that integrate signals from the innate immune system to orchestrate adaptive host immunity. This study was designed to investigate the role and molecular mechanisms of STAT3-induced beta-catenin in the regulation of DC function and inflammatory responses in vitro and in vivo. STAT3 induction in lipopolysaccharide (LPS)-stimulated mouse bone marrow-derived DCs (BMDCs) triggered beta-catenin activation by way of GSK-3beta phosphorylation. The activation of beta-catenin inhibited phosphatase and tensin homolog delete on chromosome 10 (PTEN) and promoted the phosphoinositide 3-kinase (PI3K)/Akt pathway, which in turn down-regulated DC maturation and function. In contrast, knockdown of beta-catenin increased PTEN/TLR4 (Toll-like receptor 4), interferon regulatory factor-3 (IRF3), nuclear factor kappa B (NF-kappaB) activity, and proinflammatory cytokine programs in response to LPS stimulation. In a mouse model of warm liver ischemia and reperfusion injury (IRI), disruption of beta-catenin signaling increased the hepatocellular damage, enhanced hepatic DC maturation/function, and PTEN/TLR4 local inflammation in vivo. CONCLUSION: These findings underscore the role of beta-catenin to modulate DC maturation and function at the innate-adaptive interface. Activation of beta-catenin triggered PI3K/Akt, which in turn inhibited TLR4-driven inflammatory response in a negative feedback regulatory mechanism. By identifying the molecular pathways by which beta-catenin regulates DC function, our findings provide the rationale for novel therapeutic approaches to manage local inflammation and injury in IR-stressed liver. CI - Copyright (c) 2012 American Association for the Study of Liver Diseases. FAU - Ke, Bibo AU - Ke B AD - Dumont-UCLA Transplant Center, Department of Surgery, Division of Liver and Pancreas Transplantation, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA. FAU - Shen, Xiu-Da AU - Shen XD FAU - Kamo, Naoko AU - Kamo N FAU - Ji, Haofeng AU - Ji H FAU - Yue, Shi AU - Yue S FAU - Gao, Feng AU - Gao F FAU - Busuttil, Ronald W AU - Busuttil RW FAU - Kupiec-Weglinski, Jerzy W AU - Kupiec-Weglinski JW LA - eng GR - R01 DK062357/DK/NIDDK NIH HHS/United States GR - DK 062357/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20130207 PL - United States TA - Hepatology JT - Hepatology (Baltimore, Md.) JID - 8302946 RN - 0 (CTNNB1 protein, mouse) RN - 0 (RNA, Small Interfering) RN - 0 (STAT3 Transcription Factor) RN - 0 (Stat3 protein, mouse) RN - 0 (Tlr4 protein, mouse) RN - 0 (Toll-Like Receptor 4) RN - 0 (beta Catenin) RN - EC 3.1.3.67 (PTEN Phosphohydrolase) RN - EC 3.1.3.67 (Pten protein, mouse) SB - IM MH - Adaptive Immunity/*physiology MH - Animals MH - Apoptosis/immunology MH - Cells, Cultured MH - Dendritic Cells/cytology/*immunology/metabolism MH - Disease Models, Animal MH - Immunity, Innate/*physiology MH - Liver Diseases/*immunology/metabolism MH - Male MH - Mice MH - Mice, Inbred C57BL MH - PTEN Phosphohydrolase/immunology/metabolism MH - RNA, Small Interfering/genetics MH - Reperfusion Injury/*immunology/metabolism MH - STAT3 Transcription Factor/immunology/metabolism MH - Signal Transduction/immunology MH - Toll-Like Receptor 4/immunology/metabolism MH - beta Catenin/genetics/*immunology/metabolism PMC - PMC3594407 MID - NIHMS415061 EDAT- 2012/10/20 06:00 MHDA- 2013/04/24 06:00 PMCR- 2014/03/01 CRDT- 2012/10/20 06:00 PHST- 2012/06/22 00:00 [received] PHST- 2012/10/01 00:00 [accepted] PHST- 2012/10/20 06:00 [entrez] PHST- 2012/10/20 06:00 [pubmed] PHST- 2013/04/24 06:00 [medline] PHST- 2014/03/01 00:00 [pmc-release] AID - 10.1002/hep.26100 [doi] PST - ppublish SO - Hepatology. 2013 Mar;57(3):1203-14. doi: 10.1002/hep.26100. Epub 2013 Feb 7.