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Dragano NRV, Milbank E, Haddad-Tóvolli R, Garrido-Gil P, Nóvoa E, Fondevilla MF, Capelli V, Zanesco AM, Solon C, Morari J, Pires L, Estevez-Salguero Á, Beiroa D, González-García I, Barca-Mayo O, Diéguez C, Nogueiras R, Labandeira-García JL, Rexen Ulven E, Ulven T, Claret M, Velloso LA, López M. Hypothalamic free fatty acid receptor-1 regulates whole-body energy balance. Mol Metab 2024; 79:101840. [PMID: 38036170 PMCID: PMC10784317 DOI: 10.1016/j.molmet.2023.101840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 11/17/2023] [Indexed: 12/02/2023] Open
Abstract
OBJECTIVE Free fatty acid receptor-1 (FFAR1) is a medium- and long-chain fatty acid sensing G protein-coupled receptor that is highly expressed in the hypothalamus. Here, we investigated the central role of FFAR1 on energy balance. METHODS Central FFAR1 agonism and virogenic knockdown were performed in mice. Energy balance studies, infrared thermographic analysis of brown adipose tissue (BAT) and molecular analysis of the hypothalamus, BAT, white adipose tissue (WAT) and liver were carried out. RESULTS Pharmacological stimulation of FFAR1, using central administration of its agonist TUG-905 in diet-induced obese mice, decreases body weight and is associated with increased energy expenditure, BAT thermogenesis and browning of subcutaneous WAT (sWAT), as well as reduced AMP-activated protein kinase (AMPK) levels, reduced inflammation, and decreased endoplasmic reticulum (ER) stress in the hypothalamus. As FFAR1 is expressed in distinct hypothalamic neuronal subpopulations, we used an AAV vector expressing a shRNA to specifically knockdown Ffar1 in proopiomelanocortin (POMC) neurons of the arcuate nucleus of the hypothalamus (ARC) of obese mice. Our data showed that knockdown of Ffar1 in POMC neurons promoted hyperphagia and body weight gain. In parallel, these mice developed hepatic insulin resistance and steatosis. CONCLUSIONS FFAR1 emerges as a new hypothalamic nutrient sensor regulating whole body energy balance. Moreover, pharmacological activation of FFAR1 could provide a therapeutic advance in the management of obesity and its associated metabolic disorders.
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Affiliation(s)
- Nathalia R V Dragano
- Department of Physiology, CiMUS, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 15706, Spain; Laboratory of Cell Signaling-Obesity and Comorbidities Research Center, University of Campinas, Campinas, Brazil.
| | - Edward Milbank
- Department of Physiology, CiMUS, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 15706, Spain
| | - Roberta Haddad-Tóvolli
- Neuronal Control of Metabolism (NeuCoMe) Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Pablo Garrido-Gil
- Department of Morphological Sciences, CiMUS, University of Santiago de Compostela, Santiago de Compostela, Spain; CIBER Enfermedades Neurodegenerativas (CIBERNED), 28029, Santiago de Compostela, Spain
| | - Eva Nóvoa
- Department of Physiology, CiMUS, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 15706, Spain
| | - Marcos F Fondevilla
- Department of Physiology, CiMUS, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 15706, Spain
| | - Valentina Capelli
- Department of Physiology, CiMUS, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 15706, Spain
| | - Ariane Maria Zanesco
- Laboratory of Cell Signaling-Obesity and Comorbidities Research Center, University of Campinas, Campinas, Brazil
| | - Carina Solon
- Laboratory of Cell Signaling-Obesity and Comorbidities Research Center, University of Campinas, Campinas, Brazil
| | - Joseane Morari
- Laboratory of Cell Signaling-Obesity and Comorbidities Research Center, University of Campinas, Campinas, Brazil
| | - Leticia Pires
- Laboratory of Cell Signaling-Obesity and Comorbidities Research Center, University of Campinas, Campinas, Brazil
| | - Ánxela Estevez-Salguero
- Department of Physiology, CiMUS, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 15706, Spain
| | - Daniel Beiroa
- Department of Physiology, CiMUS, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 15706, Spain
| | - Ismael González-García
- Department of Physiology, CiMUS, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 15706, Spain
| | - Olga Barca-Mayo
- Department of Physiology, CiMUS, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain
| | - Carlos Diéguez
- Department of Physiology, CiMUS, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 15706, Spain
| | - Ruben Nogueiras
- Department of Physiology, CiMUS, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 15706, Spain
| | - José L Labandeira-García
- Department of Morphological Sciences, CiMUS, University of Santiago de Compostela, Santiago de Compostela, Spain; CIBER Enfermedades Neurodegenerativas (CIBERNED), 28029, Santiago de Compostela, Spain
| | - Elisabeth Rexen Ulven
- Department of Drug Design and Pharmacology, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Trond Ulven
- Department of Drug Design and Pharmacology, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Marc Claret
- Neuronal Control of Metabolism (NeuCoMe) Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; CIBER Diabetes y Enfermedades Metabólicas Asociadas (CIBERdem), 08036, Spain; Faculty of Medicine, Universitat de Barcelona, Barcelona, Spain
| | - Licio A Velloso
- Laboratory of Cell Signaling-Obesity and Comorbidities Research Center, University of Campinas, Campinas, Brazil
| | - Miguel López
- Department of Physiology, CiMUS, University of Santiago de Compostela, Santiago de Compostela, 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 15706, Spain.
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