The RNA-binding protein HuR is a negative regulator in adipogenesis
Open Access
- 10 January 2020
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Communications
- Vol. 11 (1), 1-13
- https://doi.org/10.1038/s41467-019-14001-8
Abstract
Human antigen R (HuR) is an essential regulator of RNA metabolism, but its function in metabolism remains unclear. This study identifies HuR as a major repressor during adipogenesis. Knockdown and overexpression of HuR in primary adipocyte culture enhances and inhibits adipogenesis in vitro, respectively. Fat-specific knockout of HuR significantly enhances adipogenic gene program in adipose tissues, accompanied by a systemic glucose intolerance and insulin resistance. HuR knockout also results in depot-specific phenotypes: it can repress myogenesis program in brown fat, enhance inflammation program in epidydimal white fat and induce browning program in inguinal white fat. Mechanistically, HuR may inhibit adipogenesis by recognizing and modulating the stability of hundreds of adipocyte transcripts including Insig1, a negative regulator during adipogenesis. Taken together, our work establishes HuR as an important posttranscriptional regulator of adipogenesis and provides insights into how RNA processing contributes to adipocyte development.Funding Information
- MOH | National Medical Research Council (NMRC/OFYIRG/0080/2018, NMRC/OFIRG/0062/2017, NMRC/CBRG/0101/2016)
- Ministry of Education - Singapore (MOE2017-T2-2-015)
This publication has 42 references indexed in Scilit:
- Myeloid cell expression of the RNA-binding protein HuR protects mice from pathologic inflammation and colorectal carcinogenesisJCI Insight, 2012
- Integrative Regulatory Mapping Indicates that the RNA-Binding Protein HuR Couples Pre-mRNA Processing and mRNA StabilityMolecular Cell, 2011
- Expression of the Splicing Factor Gene SFRS10 Is Reduced in Human Obesity and Contributes to Enhanced LipogenesisCell Metabolism, 2011
- RBPDB: a database of RNA-binding specificitiesNucleic Acids Research, 2010
- Transcript assembly and quantification by RNA-Seq reveals unannotated transcripts and isoform switching during cell differentiationNature Biotechnology, 2010
- Initiation of myoblast to brown fat switch by a PRDM16–C/EBP-β transcriptional complexNature, 2009
- The RNA-Binding Protein Elavl1/HuR Is Essential for Placental Branching Morphogenesis and Embryonic DevelopmentMolecular and Cellular Biology, 2009
- Adipocytes as regulators of energy balance and glucose homeostasisNature, 2006
- Adipocyte differentiation from the inside outNature Reviews Molecular Cell Biology, 2006
- HuR and mRNA stabilityCellular and Molecular Life Sciences, 2001