PMID- 32102936 OWN - NLM STAT- MEDLINE DCOM- 20210623 LR - 20220531 IS - 1946-6242 (Electronic) IS - 1946-6234 (Linking) VI - 12 IP - 532 DP - 2020 Feb 26 TI - Liver macrophages inhibit the endogenous antioxidant response in obesity-associated insulin resistance. LID - eaaw9709 [pii] LID - 10.1126/scitranslmed.aaw9709 [doi] AB - Obesity and insulin resistance are risk factors for nonalcoholic fatty liver disease (NAFLD), the most common chronic liver disease worldwide. Because no approved medication nor an accurate and noninvasive diagnosis is currently available for NAFLD, there is a clear need to better understand the link between obesity and NAFLD. Lipid accumulation during obesity is known to be associated with oxidative stress and inflammatory activation of liver macrophages (LMs). However, we show that although LMs do not become proinflammatory during obesity, they display signs of oxidative stress. In livers of both humans and mice, antioxidant nuclear factor erythroid 2-related factor 2 (NRF2) was down-regulated with obesity and insulin resistance, yielding an impaired response to lipid accumulation. At the molecular level, a microRNA-targeting NRF2 protein, miR-144, was elevated in the livers of obese insulin-resistant humans and mice, and specific silencing of miR-144 in murine and human LMs was sufficient to restore NRF2 protein expression and the antioxidant response. These results highlight the pathological role of LMs and their therapeutic potential to restore the impaired endogenous antioxidant response in obesity-associated NAFLD. CI - Copyright (c) 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. FAU - Azzimato, Valerio AU - Azzimato V AUID- ORCID: 0000-0003-4141-961X AD - Integrated Cardio Metabolic Center, Department of Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Jager, Jennifer AU - Jager J AUID- ORCID: 0000-0003-3740-9742 AD - Universite Cote d'Azur, Inserm U1065, C3M, Team Cellular and Molecular Physiopathology of Obesity, 06000 Nice, France. FAU - Chen, Ping AU - Chen P AUID- ORCID: 0000-0002-8068-1891 AD - Integrated Cardio Metabolic Center, Department of Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Morgantini, Cecilia AU - Morgantini C AUID- ORCID: 0000-0003-3142-2508 AD - Integrated Cardio Metabolic Center, Department of Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Levi, Laura AU - Levi L AD - Integrated Cardio Metabolic Center, Department of Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Barreby, Emelie AU - Barreby E AUID- ORCID: 0000-0002-6467-5280 AD - Integrated Cardio Metabolic Center, Department of Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Sulen, Andre AU - Sulen A AUID- ORCID: 0000-0002-2053-1760 AD - Integrated Cardio Metabolic Center, Department of Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Oses, Carolina AU - Oses C AUID- ORCID: 0000-0001-8194-1168 AD - Integrated Cardio Metabolic Center, Department of Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Willerbrords, Joost AU - Willerbrords J AD - Integrated Cardio Metabolic Center, Department of Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Xu, Connie AU - Xu C AUID- ORCID: 0000-0002-5032-261X AD - Integrated Cardio Metabolic Center, Department of Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Li, Xidan AU - Li X AD - Integrated Cardio Metabolic Center, Department of Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Shen, Joanne X AU - Shen JX AD - Section of Pharmacogenetics, Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Solna, Sweden. FAU - Akbar, Naveed AU - Akbar N AUID- ORCID: 0000-0003-4620-6373 AD - Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, OX3 9DU Oxford, UK. FAU - Haag, Lars AU - Haag L AD - Department of Laboratory Medicine, Laboratory Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Ellis, Ewa AU - Ellis E AUID- ORCID: 0000-0002-3057-5337 AD - Division of Transplantation Surgery, Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Walhen, Kerstin AU - Walhen K AD - Unit of Endocrinology Department of Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Naslund, Erik AU - Naslund E AUID- ORCID: 0000-0002-0166-6344 AD - Division of Surgery, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, 182 88 Stockholm, Sweden. FAU - Thorell, Anders AU - Thorell A AUID- ORCID: 0000-0001-7238-1728 AD - Division of Surgery, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet, 182 88 Stockholm, Sweden. AD - Department of Surgery, Ersta Hospital, Karolinska Institutet, 116 28 Stockholm, Sweden. FAU - Choudhury, Robin P AU - Choudhury RP AUID- ORCID: 0000-0002-8046-1688 AD - Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, OX3 9DU Oxford, UK. FAU - Lauschke, Volker M AU - Lauschke VM AUID- ORCID: 0000-0002-1140-6204 AD - Section of Pharmacogenetics, Department of Physiology and Pharmacology, Karolinska Institutet, 171 77 Solna, Sweden. FAU - Ryden, Mikael AU - Ryden M AUID- ORCID: 0000-0003-4785-1876 AD - Unit of Endocrinology Department of Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. FAU - Craige, Siobhan M AU - Craige SM AD - Human Nutrition, Food, and Exercise Department, Virginia Tech, Blacksburg, VA 24060, USA. FAU - Aouadi, Myriam AU - Aouadi M AUID- ORCID: 0000-0001-6256-7107 AD - Integrated Cardio Metabolic Center, Department of Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden. myriam.aouadi@ki.se. LA - eng GR - PG/18/53/33895/BHF_/British Heart Foundation/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Sci Transl Med JT - Science translational medicine JID - 101505086 RN - 0 (Antioxidants) RN - 0 (MIRN144 microRNA, human) RN - 0 (MIRN144 microRNA, mouse) RN - 0 (MicroRNAs) RN - 0 (NF-E2-Related Factor 2) RN - 0 (NFE2L2 protein, human) RN - 0 (Nfe2l2 protein, mouse) SB - IM MH - Animals MH - *Antioxidants MH - Humans MH - *Insulin Resistance MH - *Kupffer Cells MH - Liver MH - Mice MH - MicroRNAs MH - NF-E2-Related Factor 2 MH - *Non-alcoholic Fatty Liver Disease MH - Obesity EDAT- 2020/02/28 06:00 MHDA- 2021/06/24 06:00 CRDT- 2020/02/28 06:00 PHST- 2019/02/11 00:00 [received] PHST- 2020/02/06 00:00 [accepted] PHST- 2020/02/28 06:00 [entrez] PHST- 2020/02/28 06:00 [pubmed] PHST- 2021/06/24 06:00 [medline] AID - 12/532/eaaw9709 [pii] AID - 10.1126/scitranslmed.aaw9709 [doi] PST - ppublish SO - Sci Transl Med. 2020 Feb 26;12(532):eaaw9709. doi: 10.1126/scitranslmed.aaw9709.