ArticleMolecular metabolism2019
RGS2: A multifunctional signaling hub that balances brown adipose tissue function and differentiation.
Article in Molecular metabolism, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 21 citations in OpenAlex.
- Regulatory T cells establish an IL-10-IL10Rα immunometabolic checkpoint that limits HSL activation and lipolysis.bioRxiv : the preprint server for biology · 2026Article
- RGS2 is an innate immune checkpoint for suppressing Gαq-mediated IFNγ generation and lung injury.iScience · 2025Article
- Article
- Long noncoding RNA HITT coordinates with RGS2 to inhibit PD-L1 translation in T cell immunity.The Journal of clinical investigation · 2023Article
- Leveraging GPCR signaling in thermogenic fat to counteract metabolic diseases.Molecular metabolism · 2022Review
- Insight Into Rho Kinase Isoforms in Obesity and Energy Homeostasis.Frontiers in endocrinology · 2022Review
- Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveRecruitment of brown adipose tissue (BAT) is a potential new strategy for increasing energy expenditure (EE) to treat obesity. G protein-coupled receptors (GPCRs) represent promising targets to activate BAT, as they are the major regulators of BAT biological function. To identify new regulators of GPCR signaling in BAT, we studied the role of Regulator of G protein Signaling 2 (RGS2) in brown adipocytes and BAT.
methodsWe combined pharmacological and genetic tools to investigate the role of RGS2 in BAT in vitro and in vivo. Adipocyte progenitors were isolated from wild-type (WT) and RGS2 knockout (RGS2-/-) BAT and differentiated to brown adipocytes. This approach was complemented with knockdown of RGS2 using lentiviral shRNAs (shRGS2). Adipogenesis was analyzed by Oil Red O staining and by determining the expression of adipogenic and thermogenic markers. Pharmacological modulators and fluorescence staining of F-acting stress fibers were employed to identify the underlying signaling pathways. In vivo, the activity of BAT was assessed by ex vivo lipolysis and by measuring whole-body EE by indirect calorimetry in metabolic cages.
resultsRGS2 is highly expressed in BAT, and treatment with cGMP-an important enhancer of brown adipocyte differentiation-further increased RGS2 expression. Loss of RGS2 strongly suppressed adipogenesis and the expression of thermogenic genes in brown adipocytes. Mechanistically, we found increased Gq/Rho/Rho kinase (ROCK) signaling in the absence of RGS2. Surprisingly, in vivo analysis revealed elevated BAT activity in RGS2-deficient mice that was caused by enhanced Gs/cAMP signaling.
conclusionOverall, RGS2 regulates two major signaling pathways in BAT: Gq and Gs. On the one hand, RGS2 promotes brown adipogenesis by counteracting the inhibitory action of Gq/Rho/ROCK signaling. On the other hand, RGS2 decreases the activity of BAT through the inhibition of Gs signaling and cAMP production. Thus, RGS2 might represent a stress modulator that protects BAT from overstimulation.
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