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Regina-Ferreira L, Valdivieso-Rivera F, Angelim MKSC, Menezes Dos Reis L, Furino VO, Morari J, Maia de Sousa L, Consonni SR, Sponton CH, Moraes-Vieira PM, Velloso LA. Inhibition of Crif1 protects fatty acid-induced POMC neuron-like cell-line damage by increasing CPT-1 function. Am J Physiol Endocrinol Metab 2024; 326:E681-E695. [PMID: 38597829 DOI: 10.1152/ajpendo.00420.2023] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/07/2024] [Accepted: 03/27/2024] [Indexed: 04/11/2024]
Abstract
Hypothalamic proopiomelanocortin (POMC) neurons are sensors of signals that reflect the energy stored in the body. Inducing mild stress in proopiomelanocortin neurons protects them from the damage promoted by the consumption of a high-fat diet, mitigating the development of obesity; however, the cellular mechanisms behind these effects are unknown. Here, we induced mild stress in a proopiomelanocortin neuron cell line by inhibiting Crif1. In proopiomelanocortin neurons exposed to high levels of palmitate, the partial inhibition of Crif1 reverted the defects in mitochondrial respiration and ATP production; this was accompanied by improved mitochondrial fusion/fission cycling. Furthermore, the partial inhibition of Crif1 resulted in increased reactive oxygen species production, increased fatty acid oxidation, and reduced dependency on glucose for mitochondrial respiration. These changes were dependent on the activity of CPT-1. Thus, we identified a CPT-1-dependent metabolic shift toward greater utilization of fatty acids as substrates for respiration as the mechanism behind the protective effect of mild stress against palmitate-induced damage of proopiomelanocortin neurons.NEW & NOTEWORTHY Saturated fats can damage hypothalamic neurons resulting in positive energy balance, and this is mitigated by mild cellular stress; however, the mechanisms behind this protective effect are unknown. Using a proopiomelanocortin cell line, we show that under exposure to a high concentration of palmitate, the partial inhibition of the mitochondrial protein Crif1 results in protection due to a metabolic shift warranted by the increased expression and activity of the mitochondrial fatty acid transporter CPT-1.
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Affiliation(s)
| | - Fernando Valdivieso-Rivera
- Obesity and Comorbidities Research Center, São Paulo, Brazil
- Department of Structural and Functional Biology, Institute of Biology (IB), University of Campinas, São Paulo, Brazil
| | - Monara K S C Angelim
- Laboratory of Immunometabolism, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas, São Paulo, Brazil
| | - Larissa Menezes Dos Reis
- Laboratory of Immunometabolism, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas, São Paulo, Brazil
| | | | - Joseane Morari
- Obesity and Comorbidities Research Center, São Paulo, Brazil
| | - Lizandra Maia de Sousa
- Laboratory of Cytochemistry and Immunocytochemistry, Department of Biochemistry and Tissue Biology, Institute of Biology (IB), University of Campinas, São Paulo, Brazil
| | - Sílvio Roberto Consonni
- Laboratory of Cytochemistry and Immunocytochemistry, Department of Biochemistry and Tissue Biology, Institute of Biology (IB), University of Campinas, São Paulo, Brazil
| | - Carlos H Sponton
- Obesity and Comorbidities Research Center, São Paulo, Brazil
- Department of Structural and Functional Biology, Institute of Biology (IB), University of Campinas, São Paulo, Brazil
| | - Pedro M Moraes-Vieira
- Obesity and Comorbidities Research Center, São Paulo, Brazil
- Laboratory of Immunometabolism, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas, São Paulo, Brazil
| | - Lício A Velloso
- Obesity and Comorbidities Research Center, São Paulo, Brazil
- National Institute of Science and Technology on Neuroimmunomodulation, São Paulo, Brazil
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Rodrigues PB, Gomes GF, Angelim MKSC, Souza GF, Muraro SP, Toledo-Teixeira DA, Rattis BAC, Passos AS, Pral LP, de Rezende Rodovalho V, dos Santos P. Gomes AB, Matheus VA, Antunes ASLM, Crunfli F, Antunes KH, de Souza APD, Consonni SR, Leiria LO, Alves-Filho JC, Cunha TM, Moraes-Vieira PMM, Proença-Módena JL, R. Vinolo MA. Impact of Microbiota Depletion by Antibiotics on SARS-CoV-2 Infection of K18-hACE2 Mice. Cells 2022; 11:2572. [PMID: 36010648 PMCID: PMC9406363 DOI: 10.3390/cells11162572] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 08/12/2022] [Accepted: 08/13/2022] [Indexed: 11/25/2022] Open
Abstract
Clinical and experimental data indicate that severe acute respiratory syndrome coronavirus (SARS-CoV)-2 infection is associated with significant changes in the composition and function of intestinal microbiota. However, the relevance of these effects for SARS-CoV-2 pathophysiology is unknown. In this study, we analyzed the impact of microbiota depletion after antibiotic treatment on the clinical and immunological responses of K18-hACE2 mice to SARS-CoV-2 infection. Mice were treated with a combination of antibiotics (kanamycin, gentamicin, metronidazole, vancomycin, and colistin, Abx) for 3 days, and 24 h later, they were infected with SARS-CoV-2 B lineage. Here, we show that more than 80% of mice succumbed to infection by day 11 post-infection. Treatment with Abx had no impact on mortality. However, Abx-treated mice presented better clinical symptoms, with similar weight loss between infected-treated and non-treated groups. We observed no differences in lung and colon histopathological scores or lung, colon, heart, brain and kidney viral load between groups on day 5 of infection. Despite some minor differences in the expression of antiviral and inflammatory markers in the lungs and colon, no robust change was observed in Abx-treated mice. Together, these findings indicate that microbiota depletion has no impact on SARS-CoV-2 infection in mice.
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Affiliation(s)
- Patrícia Brito Rodrigues
- Laboratory of Immunoinflammation, Institute of Biology, University of Campinas (UNICAMP), Campinas 13000-000, Brazil
| | - Giovanni Freitas Gomes
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14000-000, Brazil
| | - Monara K. S. C. Angelim
- Laboratory of Immunometabolism, Institute of Biology, University of Campinas (UNICAMP), Campinas 13000-000, Brazil
| | - Gabriela F. Souza
- Laboratory of Emerging Viruses, Institute of Biology, University of Campinas (UNICAMP), Campinas 13000-000, Brazil or
| | - Stefanie Primon Muraro
- Laboratory of Emerging Viruses, Institute of Biology, University of Campinas (UNICAMP), Campinas 13000-000, Brazil or
| | - Daniel A. Toledo-Teixeira
- Laboratory of Emerging Viruses, Institute of Biology, University of Campinas (UNICAMP), Campinas 13000-000, Brazil or
| | - Bruna Amanda Cruz Rattis
- Department of Pathology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14000-000, Brazil
| | - Amanda Stephane Passos
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14000-000, Brazil
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14000-000, Brazil
| | - Laís Passarielo Pral
- Laboratory of Immunoinflammation, Institute of Biology, University of Campinas (UNICAMP), Campinas 13000-000, Brazil
| | - Vinícius de Rezende Rodovalho
- Laboratory of Immunoinflammation, Institute of Biology, University of Campinas (UNICAMP), Campinas 13000-000, Brazil
| | | | - Valquíria Aparecida Matheus
- Laboratory of Immunoinflammation, Institute of Biology, University of Campinas (UNICAMP), Campinas 13000-000, Brazil
| | | | - Fernanda Crunfli
- Laboratory of Neuroproteomics, Institute of Biology, University of Campinas (UNICAMP), Campinas 13000-000, Brazil
| | - Krist Helen Antunes
- Laboratory of Clinical and Experimental Immunology, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre 90000-000, Brazil
| | - Ana Paula Duarte de Souza
- Laboratory of Clinical and Experimental Immunology, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre 90000-000, Brazil
| | - Sílvio Roberto Consonni
- Laboratory of Citochemistry and Immunocitochemistry, Institute of Biology, University of Campinas (UNICAMP), Campinas 13000-000, Brazil
| | - Luiz Osório Leiria
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14000-000, Brazil
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14000-000, Brazil
| | - José Carlos Alves-Filho
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14000-000, Brazil
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14000-000, Brazil
| | - Thiago M. Cunha
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14000-000, Brazil
- Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14000-000, Brazil
| | - Pedro M. M. Moraes-Vieira
- Laboratory of Immunometabolism, Institute of Biology, University of Campinas (UNICAMP), Campinas 13000-000, Brazil
- Obesity and Comorbidities Research Center (OCRC), University of Campinas (UNICAMP), Campinas 13000-000, Brazil
- Experimental Medicine Research Cluster, University of Campinas (UNICAMP), Campinas 13000-000, Brazil
| | - José Luiz Proença-Módena
- Laboratory of Emerging Viruses, Institute of Biology, University of Campinas (UNICAMP), Campinas 13000-000, Brazil or
- Experimental Medicine Research Cluster, University of Campinas (UNICAMP), Campinas 13000-000, Brazil
| | - Marco Aurélio R. Vinolo
- Laboratory of Immunoinflammation, Institute of Biology, University of Campinas (UNICAMP), Campinas 13000-000, Brazil
- Obesity and Comorbidities Research Center (OCRC), University of Campinas (UNICAMP), Campinas 13000-000, Brazil
- Experimental Medicine Research Cluster, University of Campinas (UNICAMP), Campinas 13000-000, Brazil
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