PMID- 34065108 OWN - NLM STAT- MEDLINE DCOM- 20210628 LR - 20210914 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 22 IP - 9 DP - 2021 May 9 TI - Metformin Actions on the Liver: Protection Mechanisms Emerging in Hepatocytes and Immune Cells against NASH-Related HCC. LID - 10.3390/ijms22095016 [doi] LID - 5016 AB - Nonalcoholic fatty liver disease (NAFLD) is strongly linked to the global epidemic of obesity and type 2 diabetes mellitus (T2DM). Notably, NAFLD can progress from the mildest form of simple steatosis to nonalcoholic steatohepatitis (NASH) that increases the risk for hepatocellular carcinoma (HCC), which is a malignancy with a dismal prognosis and rising incidence in the United States and other developed counties, possibly due to the epidemic of NAFLD. Metformin, the first-line drug for T2DM, has been suggested to reduce risks for several types of cancers including HCC and protect against NASH-related HCC, as revealed by epidemical studies on humans and preclinical studies on animal models. This review focuses on the pathogenesis of NASH-related HCC and the mechanisms by which metformin inhibits the initiation and progression of NASH-related HCC. Since the functional role of immune cells in liver homeostasis and pathogenesis is increasingly appreciated in developing anti-cancer therapies on liver malignancies, we discuss both the traditional targets of metformin in hepatocytes and the recently defined effects of metformin on immune cells. FAU - Zhang, Yueqi AU - Zhang Y AUID- ORCID: 0000-0002-1189-2118 AD - Cell and Molecular Biology Program, College of Natural Science, Michigan State University, East Lansing, MI 48824, USA. AD - Department of Physiology, College of Natural Science, Michigan State University, East Lansing, MI 48824, USA. FAU - Wang, Hongbing AU - Wang H AD - Department of Physiology, College of Natural Science, Michigan State University, East Lansing, MI 48824, USA. FAU - Xiao, Hua AU - Xiao H AD - Department of Physiology, College of Natural Science, Michigan State University, East Lansing, MI 48824, USA. LA - eng GR - Aitch Fellowship/Aitch Foundation/ GR - Dissertation completion fellowship/College of Natural Science, Michigan State University/ GR - R21CA185021/CA/NCI NIH HHS/United States GR - R01 MH119149/MH/NIMH NIH HHS/United States GR - R01CA188305/CA/NCI NIH HHS/United States GR - R01MH119149/NH/NIH HHS/United States GR - R01 CA188305/CA/NCI NIH HHS/United States PT - Journal Article PT - Review DEP - 20210509 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Hypoglycemic Agents) RN - 0 (Protective Agents) RN - 9100L32L2N (Metformin) SB - IM MH - Animals MH - Carcinoma, Hepatocellular/etiology/metabolism/prevention & control MH - DNA Damage MH - Disease Progression MH - Disease Susceptibility MH - Hepatocytes/drug effects/metabolism MH - Humans MH - Hypoglycemic Agents/*pharmacology MH - Liver/*drug effects/*metabolism MH - Liver Neoplasms/etiology/metabolism/prevention & control MH - Macrophages/metabolism MH - Metformin/*pharmacology MH - Non-alcoholic Fatty Liver Disease/complications/etiology/metabolism/pathology MH - Oxidative Stress MH - Protective Agents/pharmacology MH - Risk Factors PMC - PMC8126028 OTO - NOTNLM OT - HCC OT - MDSC OT - NAFLD OT - NASH OT - T cell OT - macrophage OT - metformin OT - myeloid-derived suppressor cell OT - type 2 diabetes mellitus COIS- The authors declare no conflict of interest. EDAT- 2021/06/03 06:00 MHDA- 2021/06/29 06:00 PMCR- 2021/05/09 CRDT- 2021/06/02 01:11 PHST- 2021/04/20 00:00 [received] PHST- 2021/05/03 00:00 [revised] PHST- 2021/05/06 00:00 [accepted] PHST- 2021/06/02 01:11 [entrez] PHST- 2021/06/03 06:00 [pubmed] PHST- 2021/06/29 06:00 [medline] PHST- 2021/05/09 00:00 [pmc-release] AID - ijms22095016 [pii] AID - ijms-22-05016 [pii] AID - 10.3390/ijms22095016 [doi] PST - epublish SO - Int J Mol Sci. 2021 May 9;22(9):5016. doi: 10.3390/ijms22095016.