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Correa-da-Silva F, Carter J, Wang XY, Sun R, Pathak E, Kuhn JMM, Schriever SC, Maya-Monteiro CM, Jiao H, Kalsbeek MJ, Moraes-Vieira PMM, Gille JJP, Sinnema M, Stumpel CTRM, Curfs LMG, Stenvers DJ, Pfluger PT, Lutter D, Pereira AM, Kalsbeek A, Fliers E, Swaab DF, Wilkinson L, Gao Y, Yi CX. Microglial phagolysosome dysfunction and altered neural communication amplify phenotypic severity in Prader-Willi Syndrome with larger deletion. Acta Neuropathol 2024; 147:64. [PMID: 38556574 PMCID: PMC10982101 DOI: 10.1007/s00401-024-02714-0] [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] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 02/20/2024] [Accepted: 02/27/2024] [Indexed: 04/02/2024]
Abstract
Prader-Willi Syndrome (PWS) is a rare neurodevelopmental disorder of genetic etiology, characterized by paternal deletion of genes located at chromosome 15 in 70% of cases. Two distinct genetic subtypes of PWS deletions are characterized, where type I (PWS T1) carries four extra haploinsufficient genes compared to type II (PWS T2). PWS T1 individuals display more pronounced physiological and cognitive abnormalities than PWS T2, yet the exact neuropathological mechanisms behind these differences remain unclear. Our study employed postmortem hypothalamic tissues from PWS T1 and T2 individuals, conducting transcriptomic analyses and cell-specific protein profiling in white matter, neurons, and glial cells to unravel the cellular and molecular basis of phenotypic severity in PWS sub-genotypes. In PWS T1, key pathways for cell structure, integrity, and neuronal communication are notably diminished, while glymphatic system activity is heightened compared to PWS T2. The microglial defect in PWS T1 appears to stem from gene haploinsufficiency, as global and myeloid-specific Cyfip1 haploinsufficiency in murine models demonstrated. Our findings emphasize microglial phagolysosome dysfunction and altered neural communication as crucial contributors to the severity of PWS T1's phenotype.
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Affiliation(s)
- Felipe Correa-da-Silva
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC. University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, The Netherlands
- Endocrine Laboratory, Department of Laboratory Medicine, Amsterdam University Medical Centers, Location AMC, Amsterdam, The Netherlands
- Netherlands Institute for Neuroscience, Amsterdam, The Netherlands
| | - Jenny Carter
- Neuroscience and Mental Health Innovation Institute, MRC Centre for Neuropsychiatric Genetic and Genomics, School of Medicine, Cardiff University, Cardiff, UK
| | - Xin-Yuan Wang
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Rui Sun
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Ekta Pathak
- Computational Discovery Unit, Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
- Research Unit NeuroBiology of Diabetes, Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
| | - José Manuel Monroy Kuhn
- Computational Discovery Unit, Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Sonja C Schriever
- German Center for Diabetes Research (DZD), Neuherberg, Germany
- Research Unit NeuroBiology of Diabetes, Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
| | - Clarissa M Maya-Monteiro
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC. University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Han Jiao
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC. University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, The Netherlands
- Endocrine Laboratory, Department of Laboratory Medicine, Amsterdam University Medical Centers, Location AMC, Amsterdam, The Netherlands
- Netherlands Institute for Neuroscience, Amsterdam, The Netherlands
| | - Martin J Kalsbeek
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC. University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, The Netherlands
| | - Pedro M M Moraes-Vieira
- Laboratory of Immunometabolism, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, São Paulo, Brazil
| | - Johan J P Gille
- Department of Clinical Genetics, Amsterdam University Medical Centers, location VUMC. University of Amsterdam, Amsterdam, The Netherlands
| | - Margje Sinnema
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Constance T R M Stumpel
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Leopold M G Curfs
- Governor Kremers Centre, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Dirk Jan Stenvers
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC. University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, The Netherlands
| | - Paul T Pfluger
- German Center for Diabetes Research (DZD), Neuherberg, Germany
- Research Unit NeuroBiology of Diabetes, Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- Division of Neurobiology of Diabetes, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Dominik Lutter
- Computational Discovery Unit, Institute for Diabetes and Obesity, Helmholtz Zentrum München, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Alberto M Pereira
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC. University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, The Netherlands
| | - Andries Kalsbeek
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC. University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, The Netherlands
- Endocrine Laboratory, Department of Laboratory Medicine, Amsterdam University Medical Centers, Location AMC, Amsterdam, The Netherlands
- Netherlands Institute for Neuroscience, Amsterdam, The Netherlands
| | - Eric Fliers
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC. University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, The Netherlands
| | - Dick F Swaab
- Netherlands Institute for Neuroscience, Amsterdam, The Netherlands
| | - Lawrence Wilkinson
- Neuroscience and Mental Health Innovation Institute, MRC Centre for Neuropsychiatric Genetic and Genomics, School of Medicine, Cardiff University, Cardiff, UK
| | - Yuanqing Gao
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Chun-Xia Yi
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC. University of Amsterdam, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands.
- Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, The Netherlands.
- Endocrine Laboratory, Department of Laboratory Medicine, Amsterdam University Medical Centers, Location AMC, Amsterdam, The Netherlands.
- Netherlands Institute for Neuroscience, Amsterdam, The Netherlands.
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Hoffman S, Maya-Monteiro CM, de Almeida CJG. Editorial: Caveolins in inflammation, infections, and disease. Front Immunol 2024; 15:1387191. [PMID: 38504989 PMCID: PMC10948401 DOI: 10.3389/fimmu.2024.1387191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 02/26/2024] [Indexed: 03/21/2024] Open
Affiliation(s)
- Stanley Hoffman
- Division of Rheumatology and Immunology, Medical University of South Carolina, Charleston, SC, United States
| | - Clarissa M. Maya-Monteiro
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cecilia J. G. de Almeida
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, Rio de Janeiro, Brazil
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Teixeira L, Pereira-Dutra FS, Reis PA, Cunha-Fernandes T, Yoshinaga MY, Souza-Moreira L, Souza EK, Barreto EA, Silva TP, Espinheira-Silva H, Igreja T, Antunes MM, Bombaça ACS, Gonçalves-de-Albuquerque CF, Menezes GB, Hottz ED, Menna-Barreto RF, Maya-Monteiro CM, Bozza FA, Miyamoto S, Melo RC, Bozza PT. Prevention of lipid droplet accumulation by DGAT1 inhibition ameliorates sepsis-induced liver injury and inflammation. JHEP Rep 2024; 6:100984. [PMID: 38293685 PMCID: PMC10827501 DOI: 10.1016/j.jhepr.2023.100984] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 11/11/2023] [Accepted: 11/21/2023] [Indexed: 02/01/2024] Open
Abstract
Background & Aims Lipid droplet (LD) accumulation in cells and tissues is understood to be an evolutionarily conserved tissue tolerance mechanism to prevent lipotoxicity caused by excess lipids; however, the presence of excess LDs has been associated with numerous diseases. Sepsis triggers the reprogramming of lipid metabolism and LD accumulation in cells and tissues, including the liver. The functions and consequences of sepsis-triggered liver LD accumulation are not well known. Methods Experimental sepsis was induced by CLP (caecal ligation and puncture) in mice. Markers of hepatic steatosis, liver injury, hepatic oxidative stress, and inflammation were analysed using a combination of functional, imaging, lipidomic, protein expression and immune-enzymatic assays. To prevent LD formation, mice were treated orally with A922500, a pharmacological inhibitor of DGAT1. Results We identified that liver LD overload correlates with liver injury and sepsis severity. Moreover, the progression of steatosis from 24 h to 48 h post-CLP occurs in parallel with increased cytokine expression, inflammatory cell recruitment and oxidative stress. Lipidomic analysis of purified LDs demonstrated that sepsis leads LDs to harbour increased amounts of unsaturated fatty acids, mostly 18:1 and 18:2. An increased content of lipoperoxides within LDs was also observed. Conversely, the impairment of LD formation by inhibition of the DGAT1 enzyme reduces levels of hepatic inflammation and lipid peroxidation markers and ameliorates sepsis-induced liver injury. Conclusions Our results indicate that sepsis triggers lipid metabolism alterations that culminate in increased liver LD accumulation. Increased LDs are associated with disease severity and liver injury. Moreover, inhibition of LD accumulation decreased the production of inflammatory mediators and lipid peroxidation while improving tissue function, suggesting that LDs contribute to the pathogenesis of liver injury triggered by sepsis. Impact and Implications Sepsis is a complex life-threatening syndrome caused by dysregulated inflammatory and metabolic host responses to infection. The observation that lipid droplets may contribute to sepsis-associated organ injury by amplifying lipid peroxidation and inflammation provides a rationale for therapeutically targeting lipid droplets and lipid metabolism in sepsis.
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Affiliation(s)
- Lívia Teixeira
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Filipe S. Pereira-Dutra
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Center for Research, Innovation and Surveillance in COVID-19 and Heath Emergencies, FIOCRUZ, Rio de Janeiro, Brazil
| | - Patrícia A. Reis
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Biochemistry Department, Roberto Alcântara Gomes Biology Institute, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tamires Cunha-Fernandes
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Center for Research, Innovation and Surveillance in COVID-19 and Heath Emergencies, FIOCRUZ, Rio de Janeiro, Brazil
| | - Marcos Y. Yoshinaga
- Laboratory of Modified Lipids, Department of Biochemistry, University of São Paulo, São Paulo, Brazil
| | - Luciana Souza-Moreira
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Ellen K. Souza
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Ester A. Barreto
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Thiago P. Silva
- Laboratory of Cellular Biology, Department of Biology, Institute of Biological Sciences (ICB), Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Hugo Espinheira-Silva
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Center for Research, Innovation and Surveillance in COVID-19 and Heath Emergencies, FIOCRUZ, Rio de Janeiro, Brazil
| | - Tathiany Igreja
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Maísa M. Antunes
- Center for Gastrointestinal Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Ana Cristina S. Bombaça
- Laboratory of Cellular Biology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Laboratory of Parasitic Disease, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Cassiano F. Gonçalves-de-Albuquerque
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gustavo B. Menezes
- Center for Gastrointestinal Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Eugênio D. Hottz
- Laboratory of Immunothrombosis, Department of Biochemistry, Federal University of Juiz de Fora (UFJF), Juiz de Fora, Minas Gerais, Brazil
| | | | - Clarissa M. Maya-Monteiro
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Center for Research, Innovation and Surveillance in COVID-19 and Heath Emergencies, FIOCRUZ, Rio de Janeiro, Brazil
| | - Fernando A. Bozza
- Center for Research, Innovation and Surveillance in COVID-19 and Heath Emergencies, FIOCRUZ, Rio de Janeiro, Brazil
- Intensive Care Medicine Laboratory, INI, FIOCRUZ, Rio de Janeiro, Brazil
- D'Or Institute Research and Education (IDOr), Rio de Janeiro, Brazil
| | - Sayuri Miyamoto
- Laboratory of Modified Lipids, Department of Biochemistry, University of São Paulo, São Paulo, Brazil
| | - Rossana C.N. Melo
- Laboratory of Cellular Biology, Department of Biology, Institute of Biological Sciences (ICB), Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Patrícia T. Bozza
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
- Center for Research, Innovation and Surveillance in COVID-19 and Heath Emergencies, FIOCRUZ, Rio de Janeiro, Brazil
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Diepenbroek C, Rijnsburger M, van Irsen AAS, Eggels L, Kisner A, Foppen E, Unmehopa UA, Berland C, Dólleman S, Hardonk M, Cruciani-Guglielmacci C, Faust RP, Wenning R, Maya-Monteiro CM, Kalsbeek A, Aponte Y, Luquet S, Serlie MJM, la Fleur SE. Dopamine in the nucleus accumbens shell controls systemic glucose metabolism via the lateral hypothalamus and hepatic vagal innervation in rodents. Metabolism 2024; 150:155696. [PMID: 37804881 DOI: 10.1016/j.metabol.2023.155696] [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: 07/20/2023] [Revised: 09/06/2023] [Accepted: 10/04/2023] [Indexed: 10/09/2023]
Abstract
BACKGROUND Growing evidence demonstrates the role of the striatal dopamine system in the regulation of glucose metabolism. Treatment with dopamine antagonists is associated with insulin resistance and hyperglycemia, while dopamine agonists are used in treatment of type 2 diabetes. The mechanism underlying striatal dopamine effects in glucose metabolism, however is not fully understood. Here, we provide mechanistic insights into the role of nucleus accumbens shell (sNAc) dopaminergic signaling in systemic glucose metabolism. METHODS Endogenous glucose production (EGP), blood glucose and mRNA expression in the lateral hypothalamic area (LHA) in male Wistar rats were measured following infusion of vanoxerine (VNX, dopamine reuptake inhibitor) in the sNAc. Thereafter, we analyzed projections from sNAc Drd1-expressing neurons to LHA using D1-Cre male Long-Evans rats, Cre-dependent viral tracers and fluorescence immunohistochemistry. Brain slice electrophysiology in adult mice was used to study spontaneous excitatory postsynaptic currents of sNAc Drd1-expressing neurons following VNX application. Finally, we assessed whether GABAergic LHA activity and hepatic vagal innervation were required for the effect of sNAc-VNX on glucose metabolism by combining infusion of sNAc-VNX with LHA-bicuculline, performing vagal recordings and combining infusion of sNAc-VNX with hepatic vagal denervation. RESULTS VNX infusion in the sNAc strongly decreased endogenous glucose production, prevented glucose increases over time, reduced Slc17A6 and Hcrt mRNA in LHA, and increased vagal activity. Furthermore, sNAc Drd1-expressing neurons increased spontaneous firing following VNX application, and viral tracing of sNAc Drd1-expressing neurons revealed direct projections to LHA with on average 67 % of orexin cells directly targeted by sNAc Drd1-expressing neurons. Importantly, the sNAc-VNX-induced effect on glucose metabolism was dependent on GABAergic signaling in the LHA and on intact hepatic vagal innervation. CONCLUSIONS We show that sNAc dopaminergic signaling modulates hepatic glucose metabolism through GABAergic inputs to glutamatergic LHA cells and hepatic vagal innervation. This demonstrates that striatal control of glucose metabolism involves a dopaminergic sNAc-LHA-liver axis and provides a potential explanation for the effects of dopamine agonists and antagonists on glucose metabolism.
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Affiliation(s)
- Charlene Diepenbroek
- Amsterdam UMC, University of Amsterdam, Laboratory of Endocrinology, Department of Laboratory Medicine, Meibergdreef 9, Amsterdam, the Netherlands; Amsterdam Neuroscience, Cellular and Molecular Mechanisms, Amsterdam, the Netherlands; Amsterdam Gastroenterology Endocrinology Metabolism, Endocrinology, Metabolism and Nutrition, Amsterdam, the Netherlands; Netherlands Institute for Neuroscience (NIN), an Institute of the Royal Netherlands Academy of Arts and Sciences (KNAW), Meibergdreef 47, 1105 BA Amsterdam, the Netherlands
| | - Merel Rijnsburger
- Amsterdam UMC, University of Amsterdam, Laboratory of Endocrinology, Department of Laboratory Medicine, Meibergdreef 9, Amsterdam, the Netherlands; Amsterdam Neuroscience, Cellular and Molecular Mechanisms, Amsterdam, the Netherlands; Amsterdam Gastroenterology Endocrinology Metabolism, Endocrinology, Metabolism and Nutrition, Amsterdam, the Netherlands; Netherlands Institute for Neuroscience (NIN), an Institute of the Royal Netherlands Academy of Arts and Sciences (KNAW), Meibergdreef 47, 1105 BA Amsterdam, the Netherlands
| | - Astrid A S van Irsen
- Amsterdam UMC, University of Amsterdam, Laboratory of Endocrinology, Department of Laboratory Medicine, Meibergdreef 9, Amsterdam, the Netherlands; Amsterdam Neuroscience, Cellular and Molecular Mechanisms, Amsterdam, the Netherlands; Amsterdam Gastroenterology Endocrinology Metabolism, Endocrinology, Metabolism and Nutrition, Amsterdam, the Netherlands; Netherlands Institute for Neuroscience (NIN), an Institute of the Royal Netherlands Academy of Arts and Sciences (KNAW), Meibergdreef 47, 1105 BA Amsterdam, the Netherlands
| | - Leslie Eggels
- Amsterdam UMC, University of Amsterdam, Laboratory of Endocrinology, Department of Laboratory Medicine, Meibergdreef 9, Amsterdam, the Netherlands; Netherlands Institute for Neuroscience (NIN), an Institute of the Royal Netherlands Academy of Arts and Sciences (KNAW), Meibergdreef 47, 1105 BA Amsterdam, the Netherlands
| | - Alexandre Kisner
- National Institute on Drug Abuse, Intramural Research Program, Neuronal Circuits and Behavior Unit, National Institutes of Health, Biomedical Research Center, 251 Bayview Boulevard, Baltimore, MD 21224, USA
| | - Ewout Foppen
- Amsterdam UMC, University of Amsterdam, Laboratory of Endocrinology, Department of Laboratory Medicine, Meibergdreef 9, Amsterdam, the Netherlands; Netherlands Institute for Neuroscience (NIN), an Institute of the Royal Netherlands Academy of Arts and Sciences (KNAW), Meibergdreef 47, 1105 BA Amsterdam, the Netherlands
| | - Unga A Unmehopa
- Amsterdam UMC, University of Amsterdam, Laboratory of Endocrinology, Department of Laboratory Medicine, Meibergdreef 9, Amsterdam, the Netherlands
| | - Chloé Berland
- Université Paris Cité, BFA, UMR 8251, CNRS, F-75013 Paris, France
| | - Sophie Dólleman
- Amsterdam UMC, University of Amsterdam, Laboratory of Endocrinology, Department of Laboratory Medicine, Meibergdreef 9, Amsterdam, the Netherlands
| | - Marene Hardonk
- Amsterdam UMC, University of Amsterdam, Laboratory of Endocrinology, Department of Laboratory Medicine, Meibergdreef 9, Amsterdam, the Netherlands
| | | | - Rudolf P Faust
- Netherlands Institute for Neuroscience (NIN), an Institute of the Royal Netherlands Academy of Arts and Sciences (KNAW), Meibergdreef 47, 1105 BA Amsterdam, the Netherlands; Department of Psychiatry, Amsterdam UMC, UvA, Amsterdam Neuroscience, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands
| | - Rick Wenning
- Amsterdam UMC, University of Amsterdam, Laboratory of Endocrinology, Department of Laboratory Medicine, Meibergdreef 9, Amsterdam, the Netherlands
| | - Clarissa M Maya-Monteiro
- Amsterdam UMC, University of Amsterdam, Laboratory of Endocrinology, Department of Laboratory Medicine, Meibergdreef 9, Amsterdam, the Netherlands; Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
| | - Andries Kalsbeek
- Amsterdam UMC, University of Amsterdam, Laboratory of Endocrinology, Department of Laboratory Medicine, Meibergdreef 9, Amsterdam, the Netherlands; Amsterdam Neuroscience, Cellular and Molecular Mechanisms, Amsterdam, the Netherlands; Amsterdam Gastroenterology Endocrinology Metabolism, Endocrinology, Metabolism and Nutrition, Amsterdam, the Netherlands; Netherlands Institute for Neuroscience (NIN), an Institute of the Royal Netherlands Academy of Arts and Sciences (KNAW), Meibergdreef 47, 1105 BA Amsterdam, the Netherlands; Amsterdam UMC, University of Amsterdam, Department of Endocrinology and Metabolism, Meibergdreef 9, Amsterdam, the Netherlands
| | - Yeka Aponte
- National Institute on Drug Abuse, Intramural Research Program, Neuronal Circuits and Behavior Unit, National Institutes of Health, Biomedical Research Center, 251 Bayview Boulevard, Baltimore, MD 21224, USA
| | - Serge Luquet
- Université Paris Cité, BFA, UMR 8251, CNRS, F-75013 Paris, France
| | - Mireille J M Serlie
- Amsterdam Gastroenterology Endocrinology Metabolism, Endocrinology, Metabolism and Nutrition, Amsterdam, the Netherlands; Amsterdam UMC, University of Amsterdam, Department of Endocrinology and Metabolism, Meibergdreef 9, Amsterdam, the Netherlands; Department of Endocrinology, Yale School of Medicine, New Haven, USA
| | - Susanne E la Fleur
- Amsterdam UMC, University of Amsterdam, Laboratory of Endocrinology, Department of Laboratory Medicine, Meibergdreef 9, Amsterdam, the Netherlands; Amsterdam Neuroscience, Cellular and Molecular Mechanisms, Amsterdam, the Netherlands; Amsterdam Gastroenterology Endocrinology Metabolism, Endocrinology, Metabolism and Nutrition, Amsterdam, the Netherlands; Netherlands Institute for Neuroscience (NIN), an Institute of the Royal Netherlands Academy of Arts and Sciences (KNAW), Meibergdreef 47, 1105 BA Amsterdam, the Netherlands.
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Cesar-Silva D, Pereira-Dutra FS, Giannini ALM, Maya-Monteiro CM, de Almeida CJG. Lipid compartments and lipid metabolism as therapeutic targets against coronavirus. Front Immunol 2023; 14:1268854. [PMID: 38106410 PMCID: PMC10722172 DOI: 10.3389/fimmu.2023.1268854] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 10/24/2023] [Indexed: 12/19/2023] Open
Abstract
Lipids perform a series of cellular functions, establishing cell and organelles' boundaries, organizing signaling platforms, and creating compartments where specific reactions occur. Moreover, lipids store energy and act as secondary messengers whose distribution is tightly regulated. Disruption of lipid metabolism is associated with many diseases, including those caused by viruses. In this scenario, lipids can favor virus replication and are not solely used as pathogens' energy source. In contrast, cells can counteract viruses using lipids as weapons. In this review, we discuss the available data on how coronaviruses profit from cellular lipid compartments and why targeting lipid metabolism may be a powerful strategy to fight these cellular parasites. We also provide a formidable collection of data on the pharmacological approaches targeting lipid metabolism to impair and treat coronavirus infection.
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Affiliation(s)
- Daniella Cesar-Silva
- Laboratory of Immunopharmacology, Department of Genetics, Oswaldo Cruz Institute, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Filipe S. Pereira-Dutra
- Laboratory of Immunopharmacology, Department of Genetics, Oswaldo Cruz Institute, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Ana Lucia Moraes Giannini
- Laboratory of Functional Genomics and Signal Transduction, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Clarissa M. Maya-Monteiro
- Laboratory of Immunopharmacology, Department of Genetics, Oswaldo Cruz Institute, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
- Laboratory of Endocrinology and Department of Endocrinology and Metabolism, Amsterdam University Medical Centers (UMC), University of Amsterdam, Amsterdam, Netherlands
| | - Cecília Jacques G. de Almeida
- Laboratory of Immunopharmacology, Department of Genetics, Oswaldo Cruz Institute, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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Atella T, Bittencourt-Cunha PR, Araujo MFC, Silva-Cardoso L, Maya-Monteiro CM, Atella GC. Trypanosoma cruzi modulates lipid metabolism and highjacks phospholipids from the midgut of Rhodnius prolixus. Acta Trop 2022; 233:106552. [PMID: 35671784 DOI: 10.1016/j.actatropica.2022.106552] [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] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 06/02/2022] [Accepted: 06/03/2022] [Indexed: 11/30/2022]
Abstract
Chagas disease is potentially life-threatening and caused by the protozoan parasite Trypanosoma cruzi. The parasite cannot synthesize some lipids and depends on the uptake of these lipids from its vertebrate and invertebrate hosts. To achieve this, T. cruzi may need to modify the physiology of the insect host for its own benefit. In this study, we investigated the interaction of T. cruzi (Y strain) with its insect vector Rhodnius prolixus and how it manipulates the vector lipid metabolism. We observed a physiological change in lipid flux in of infected insects. In the fat body of infected insects, triacylglycerol levels decreased by 80.6% and lipid storage droplet-1(LSD-1) mRNA levels were lower, when compared to controls. Lipid sequestration by infected midguts led to increased levels of 5' AMP-activated protein kinase (AMPK) phosphorylation and activation in the fat body, inhibiting the synthesis of fatty acids and stimulating their oxidation. This led to reduced lipid levels in the fat body of infected insets, despite the fact that T. cruzi does not colonize this tissue. There was a 3-fold increase, in lipid uptake and synthesis in the midgut of infected insects. Finally, our results suggest that the parasite modifies the lipid flux and metabolism of its vector R. prolixus through the increase in lipid delivery from the fat body to midgut that are then scavenge by T cruzi.
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Affiliation(s)
- T Atella
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, 343 Carlos Chagas Filho Avenue, Rio de Janeiro, RJ 21941902, Brazil; Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - P R Bittencourt-Cunha
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, 343 Carlos Chagas Filho Avenue, Rio de Janeiro, RJ 21941902, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - M F C Araujo
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, 343 Carlos Chagas Filho Avenue, Rio de Janeiro, RJ 21941902, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - L Silva-Cardoso
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, 343 Carlos Chagas Filho Avenue, Rio de Janeiro, RJ 21941902, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - C M Maya-Monteiro
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - G C Atella
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, 343 Carlos Chagas Filho Avenue, Rio de Janeiro, RJ 21941902, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
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7
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Pérez AR, Maya-Monteiro CM, Carvalho VF. Editorial: Neuroendocrine-Immunological Interactions in Health and Disease. Front Endocrinol (Lausanne) 2021; 12:718893. [PMID: 34552560 PMCID: PMC8450893 DOI: 10.3389/fendo.2021.718893] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 07/07/2021] [Indexed: 11/29/2022] Open
Affiliation(s)
- Ana Rosa Pérez
- Instituto de Inmunología Clínica y Experimental de Rosario, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Rosario, Argentina
- Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Rosario, Argentina
- *Correspondence: Ana Rosa Pérez, ; Clarissa M. Maya-Monteiro, ; Vinicius Frias Carvalho,
| | - Clarissa M. Maya-Monteiro
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
- Department of Endocrinology and Metabolism, Amsterdam University Medical Centers (Amsterdam UMC), Amsterdam, Netherlands
- Metabolism and Reward Group, Netherlands Institute for Neuroscience (NIN), Amsterdam, Netherlands
- *Correspondence: Ana Rosa Pérez, ; Clarissa M. Maya-Monteiro, ; Vinicius Frias Carvalho,
| | - Vinicius Frias Carvalho
- Laboratory of Inflammation, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
- *Correspondence: Ana Rosa Pérez, ; Clarissa M. Maya-Monteiro, ; Vinicius Frias Carvalho,
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8
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Colman L, Caggiani M, Leyva A, Bresque M, Liechocki S, Maya-Monteiro CM, Mazal D, Batthyany C, Calliari A, Contreras P, Escande C. The protein Deleted in Breast Cancer-1 (DBC1) regulates vascular response and formation of aortic dissection during Angiotensin II infusion. Sci Rep 2020; 10:6772. [PMID: 32317757 PMCID: PMC7174338 DOI: 10.1038/s41598-020-63841-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 04/07/2020] [Indexed: 12/25/2022] Open
Abstract
Cardiovascular diseases are among the main causes of morbimortality in the adult population. Among them, hypertension is a leading cause for stroke, heart disease and kidney failure. Also, as a result of arterial wall weakness, hypertension can lead to the development of dissecting aortic aneurysms, a rare but often fatal condition if not readily treated. In this work, we investigated the role of DBC1 in the regulation of vascular function in an ANGII-induced hypertension mouse model. We found that WT and DBC1 KO mice developed hypertension in response to ANGII infusion. However, DBC1 KO mice showed increased susceptibility to develop aortic dissections. The effect was accompanied by upregulation of vascular remodeling factors, including MMP9 and also VEGF. Consistent with this, we found decreased collagen deposition and elastic fiber fragmentation, suggesting that increased expression of MMPs in DBC1 KO mice weakens the arterial wall, promoting the formation of aortic dissections during treatment with ANGII. Finally, DBC1 KO mice had reduced cell proliferation in the intima-media layer in response to ANGII, paralleled with an impairment to increase wall thickness in response to hypertension. Furthermore, VSMC purified from DBC1 KO mice showed impaired capacity to leave quiescence, confirming the in vivo results. Altogether, our results show for the first time that DBC1 regulates vascular response and function during hypertension and protects against vascular injury. This work also brings novel insights into the molecular mechanisms of the development of aortic dissections.
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Affiliation(s)
- Laura Colman
- Laboratory of Metabolic Diseases and Aging, INDICyO Program, Institut Pasteur Montevideo, Montevideo, Uruguay
| | - Maria Caggiani
- Laboratory of Metabolic Diseases and Aging, INDICyO Program, Institut Pasteur Montevideo, Montevideo, Uruguay
- Departamento de Fisiología, Facultad de Medicina, Universidad de la República (UdelaR), Montevideo, Uruguay
| | - Alejandro Leyva
- Laboratory of Vascular Biology and Rational Drug Design, INDICyO Program, Institut Pasteur Montevideo, Montevideo, Uruguay
- Analytical Biochemistry and Proteomics Unit, Institut Pasteur Montevideo and Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay
| | - Mariana Bresque
- Laboratory of Metabolic Diseases and Aging, INDICyO Program, Institut Pasteur Montevideo, Montevideo, Uruguay
| | - Sally Liechocki
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Clarissa M Maya-Monteiro
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Daniel Mazal
- Departamento de Anatomía Patológica, Facultad de Medicina, Universidad de la República (UdelaR) and C.H Pereira Rossell, Montevideo, Uruguay
| | - Carlos Batthyany
- Laboratory of Vascular Biology and Rational Drug Design, INDICyO Program, Institut Pasteur Montevideo, Montevideo, Uruguay
| | - Aldo Calliari
- Laboratory of Metabolic Diseases and Aging, INDICyO Program, Institut Pasteur Montevideo, Montevideo, Uruguay
- Departamento de Biociencias, Facultad de Veterinaria, Universidad de la República (UdelaR), Montevideo, Uruguay
| | - Paola Contreras
- Laboratory of Metabolic Diseases and Aging, INDICyO Program, Institut Pasteur Montevideo, Montevideo, Uruguay
- Departamento de Fisiología, Facultad de Medicina, Universidad de la República (UdelaR), Montevideo, Uruguay
| | - Carlos Escande
- Laboratory of Metabolic Diseases and Aging, INDICyO Program, Institut Pasteur Montevideo, Montevideo, Uruguay.
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9
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Roque NR, Lage SL, Navarro R, Fazolini N, Maya-Monteiro CM, Rietdorf J, Melo RCN, D'Avila H, Bozza PT. Rab7 controls lipid droplet-phagosome association during mycobacterial infection. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1865:158703. [PMID: 32229179 DOI: 10.1016/j.bbalip.2020.158703] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 03/12/2020] [Accepted: 03/25/2020] [Indexed: 12/21/2022]
Abstract
Lipid droplets (LDs) are organelles that have multiple roles in inflammatory and infectious diseases. LD act as essential platforms for immunometabolic regulation, including as sites for lipid storage and metabolism, inflammatory lipid mediator production, and signaling pathway compartmentalization. Accumulating evidence indicates that intracellular pathogens may exploit host LDs as source of nutrients and as part of their strategy to promote immune evasion. Notably, numerous studies have demonstrated the interaction between LDs and pathogen-containing phagosomes. However, the mechanism involved in this phenomenon remains elusive. Here, we observed LDs and PLIN2 surrounding M. bovis BCG-containing phagosomes, which included observations of a bacillus cell surrounded by lipid content inside a phagosome and LAM from mycobacteria co-localizing with LDs; these results were suggestive of exchange of contents between these compartments. By using beads coated with M.tb lipids, we demonstrated that LD-phagosome associations are regulated through the mycobacterial cell wall components LAM and PIM. In addition, we demonstrated that Rab7 and RILP, but not Rab5, localizes to LDs of infected macrophages and observed the presence of Rab7 at the site of interaction with an infected phagosome. Moreover, treatment of macrophages with the Rab7 inhibitor CID1067700 significantly inhibited the association between LDs and LAM-coated beads. Altogether, our data demonstrate that LD-phagosome interactions are controlled by mycobacterial cell wall components and Rab7, which enables the exchange of contents between LDs and phagosomes and may represent a fundamental aspect of bacterial pathogenesis and immune evasion.
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Affiliation(s)
- Natalia R Roque
- Laboratório de Imunofarmacologia, IOC, Fundação Oswaldo Cruz, Rio de Janeiro, 21045-900, RJ, Brazil
| | - Silvia L Lage
- Laboratório de Imunofarmacologia, IOC, Fundação Oswaldo Cruz, Rio de Janeiro, 21045-900, RJ, Brazil
| | - Roberta Navarro
- Laboratório de Imunofarmacologia, IOC, Fundação Oswaldo Cruz, Rio de Janeiro, 21045-900, RJ, Brazil
| | - Narayana Fazolini
- Laboratório de Imunofarmacologia, IOC, Fundação Oswaldo Cruz, Rio de Janeiro, 21045-900, RJ, Brazil
| | - Clarissa M Maya-Monteiro
- Laboratório de Imunofarmacologia, IOC, Fundação Oswaldo Cruz, Rio de Janeiro, 21045-900, RJ, Brazil
| | - Jens Rietdorf
- Centro de Desenvolvimento Tecnológico em Saúde, CDTS, IOC, Fundação Oswaldo Cruz, Rio de Janeiro, 21045-900, RJ, Brazil
| | - Rossana C N Melo
- Laboratório de Biologia Celular, Departamento de Biologia, Universidade Federal de Juiz de Fora, Juiz de Fora, 36036-330, MG, Brazil
| | - Heloisa D'Avila
- Laboratório de Biologia Celular, Departamento de Biologia, Universidade Federal de Juiz de Fora, Juiz de Fora, 36036-330, MG, Brazil
| | - Patricia T Bozza
- Laboratório de Imunofarmacologia, IOC, Fundação Oswaldo Cruz, Rio de Janeiro, 21045-900, RJ, Brazil.
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10
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Amorim NRT, Souza-Almeida G, Luna-Gomes T, Bozza PT, Canetti C, Diaz BL, Maya-Monteiro CM, Bandeira-Melo C. Leptin Elicits In Vivo Eosinophil Migration and Activation: Key Role of Mast Cell-Derived PGD 2. Front Endocrinol (Lausanne) 2020; 11:572113. [PMID: 33117286 PMCID: PMC7551309 DOI: 10.3389/fendo.2020.572113] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 09/09/2020] [Indexed: 12/16/2022] Open
Abstract
Eosinophils are key regulators of adipose tissue homeostasis, thus characterization of adipose tissue-related molecular factors capable of regulating eosinophil activity is of great interest. Leptin is known to directly activate eosinophils in vitro, but leptin ability of inducing in vivo eosinophilic inflammatory response remains elusive. Here, we show that leptin elicits eosinophil influx as well as its activation, characterized by increased lipid body biogenesis and LTC4 synthesis. Such leptin-triggered eosinophilic inflammatory response was shown to be dependent on activation of the mTOR signaling pathway, since it was (i) inhibited by rapamycin pre-treatment and (ii) reduced in PI3K-deficient mice. Local infiltration of activated eosinophils within leptin-driven inflammatory site was preceded by increased levels of classical mast cell-derived molecules, including TNFα, CCL5 (RANTES), and PGD2. Thus, mice were pre-treated with a mast cell degranulating agent compound 48/80 which was capable to impair leptin-induced PGD2 release, as well as eosinophil recruitment and activation. In agreement with an indirect mast cell-driven phenomenon, eosinophil accumulation induced by leptin was abolished in TNFR-1 deficient and also in HQL-79-pretreated mice, but not in mice pretreated with neutralizing antibodies against CCL5, indicating that both typical mast cell-driven signals TNFα and PGD2, but not CCL5, contribute to leptin-induced eosinophil influx. Distinctly, leptin-induced eosinophil lipid body (lipid droplet) assembly and LTC4 synthesis appears to depend on both PGD2 and CCL5, since both HQL-79 and anti-CCL5 treatments were able to inhibit these eosinophil activation markers. Altogether, our data show that leptin triggers eosinophilic inflammation in vivo via an indirect mechanism dependent on activation of resident mast cell secretory activity and mediation by TNFα, CCL5, and specially PGD2.
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Affiliation(s)
- Natália R. T. Amorim
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Glaucia Souza-Almeida
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz - IOC, FIOCRUZ, Rio de Janeiro, Brazil
- Laboratório de Imunoinflamação, Instituto de Biologia, Universidade de Campinas, Campinas, Brazil
| | - Tatiana Luna-Gomes
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Departamento de Ciências da Natureza, Instituto de Aplicação Fernando Rodrigues da Silveira, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Patricia T. Bozza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz - IOC, FIOCRUZ, Rio de Janeiro, Brazil
| | - Claudio Canetti
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Bruno L. Diaz
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Clarissa M. Maya-Monteiro
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz - IOC, FIOCRUZ, Rio de Janeiro, Brazil
- *Correspondence: Christianne Bandeira-Melo, ; Clarissa M. Maya-Monteiro,
| | - Christianne Bandeira-Melo
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- *Correspondence: Christianne Bandeira-Melo, ; Clarissa M. Maya-Monteiro,
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11
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Amorim NRT, Luna-Gomes T, Gama-Almeida M, Souza-Almeida G, Canetti C, Diaz BL, Weller PF, Torres Bozza P, Maya-Monteiro CM, Bandeira-Melo C. Leptin Elicits LTC 4 Synthesis by Eosinophils Mediated by Sequential Two-Step Autocrine Activation of CCR3 and PGD 2 Receptors. Front Immunol 2018; 9:2139. [PMID: 30298073 PMCID: PMC6160734 DOI: 10.3389/fimmu.2018.02139] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Accepted: 08/30/2018] [Indexed: 12/11/2022] Open
Abstract
Leptin is a cytokine, produced mainly by mature adipocytes, that regulates the central nervous system, mainly to suppress appetite and stimulate energy expenditure. Leptin also regulates the immune response by controlling activation of immunomodulatory cells, including eosinophils. While emerging as immune regulatory cells with roles in adipose tissue homeostasis, eosinophils have a well-established ability to synthesize pro-inflammatory molecules such as lipid mediators, a key event in several inflammatory pathologies. Here, we investigated the impact and mechanisms involved in leptin-driven activation of eicosanoid-synthesizing machinery within eosinophils. Direct in vitro activation of human or mouse eosinophils with leptin elicited synthesis of lipoxygenase as well as cyclooxygenase products. Displaying selectivity, leptin triggered synthesis of LTC4 and PGD2, but not PGE2, in parallel to dose-dependent induction of lipid body/lipid droplets biogenesis. While dependent on PI3K activation, leptin-driven eosinophil activation was also sensitive to pertussis toxin, indicating the involvement of G-protein coupled receptors on leptin effects. Leptin-induced lipid body-driven LTC4 synthesis appeared to be mediated through autocrine activation of G-coupled CCR3 receptors by eosinophil-derived CCL5, inasmuch as leptin was able to trigger rapid CCL5 secretion, and neutralizing anti-RANTES or anti-CCR3 antibodies blocked lipid body assembly and LTC4 synthesis induced by leptin. Remarkably, autocrine activation of PGD2 G-coupled receptors DP1 and DP2 also contributes to leptin-elicited lipid body-driven LTC4 synthesis by eosinophils in a PGD2-dependent fashion. Blockade of leptin-induced PGD2 autocrine/paracrine activity by a specific synthesis inhibitor or DP1 and DP2 receptor antagonists, inhibited both lipid body biogenesis and LTC4 synthesis induced by leptin stimulation within eosinophils. In addition, CCL5-driven CCR3 activation appears to precede PGD2 receptor activation within eosinophils, since neutralizing anti-CCL5 or anti-CCR3 antibodies inhibited leptin-induced PGD2 secretion, while it failed to alter PGD2-induced LTC4 synthesis. Altogether, sequential activation of CCR3 and then PGD2 receptors by autocrine ligands in response to leptin stimulation of eosinophils culminates with eosinophil activation, characterized here by assembly of lipidic cytoplasmic platforms synthesis and secretion of the pleiotropic lipid mediators, PGD2, and LTC4.
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Affiliation(s)
- Natália R T Amorim
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tatiana Luna-Gomes
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Departamento de Ciências da Natureza, Instituto de Aplicação Fernando Rodrigues da Silveira, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcos Gama-Almeida
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Glaucia Souza-Almeida
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz-IOC, FIOCRUZ, Rio de Janeiro, Brazil
| | - Claudio Canetti
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Bruno L Diaz
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Peter F Weller
- Department of Medicine, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, MA, United States
| | - Patricia Torres Bozza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz-IOC, FIOCRUZ, Rio de Janeiro, Brazil
| | | | - Christianne Bandeira-Melo
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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12
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Souza-Almeida G, D'Avila H, Almeida PE, Luna-Gomes T, Liechocki S, Walzog B, Hepper I, Castro-Faria-Neto HC, Bozza PT, Bandeira-Melo C, Maya-Monteiro CM. Leptin Mediates In Vivo Neutrophil Migration: Involvement of Tumor Necrosis Factor-Alpha and CXCL1. Front Immunol 2018; 9:111. [PMID: 29467755 PMCID: PMC5808117 DOI: 10.3389/fimmu.2018.00111] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 01/15/2018] [Indexed: 11/13/2022] Open
Abstract
Leptin directly activates macrophages and lymphocytes, but the role of leptin in neutrophil activation and migration is still controversial. Here, we investigate the in vivo mechanisms of neutrophil migration induced by leptin. The intraperitoneal injection of leptin (1 mg/kg) induces a time- and concentration-dependent neutrophil influx. We did not observe the enhancement of lipid bodies/droplets in neutrophils, after leptin treatment, as we had observed previously in peritoneal macrophages. The participation of leukotriene B4 (LTB4) in neutrophil recruitment triggered by leptin was investigated using different strategies. Leptin-induced neutrophil recruitment occurs both in the absence of 5-lipoxygenase activity in 5-lipoxygenase (5-LO)-/- mice and after the administration of either 5-LO inhibitor (Zileuton) or the LTB4 receptor antagonist (U-75302). Moreover, no direct induction of LTB4 by leptin could be observed. Neutrophil influx could not be prevented by the mammalian target of rapamycin (mTOR) inhibitor, rapamycin, contrasting with the leptin-induced signaling for lipid body formation in macrophage that is mTOR-dependent. Leptin administration led to tumor necrosis factor-alpha (TNFα) production by the peritoneal cells both in vivo and in vitro. In addition, neutrophil recruitment was inhibited in tumor necrosis factor receptor 1 (TNFR1-/-) mice, indicating a role for TNF in leptin-induced neutrophil recruitment to the peritoneal cavity. Leptin-induced neutrophil influx was PI3Kγ-dependent, as it was absent in PI3Kγ-/- mice. Accordingly, leptin induced the peritoneal cells to produce CXCL1, both in vivo and in vitro, and the neutrophil influx was ablated after using an antibody against CXCL1. Our results establish TNFα/TNFR1- and CXCL1-dependent signaling as important pathways for leptin-induced neutrophil migration in vivo.
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Affiliation(s)
- Glaucia Souza-Almeida
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Heloisa D'Avila
- Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
| | - Patricia E Almeida
- Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
| | - Tatiana Luna-Gomes
- Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil.,Departamento de Ciências da Natureza, Instituto de Aplicação Fernando Rodrigues da Silveira, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Sally Liechocki
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Barbara Walzog
- Walter Brendel Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Biomedical Center, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Ingrid Hepper
- Walter Brendel Centre of Experimental Medicine, Department of Cardiovascular Physiology and Pathophysiology, Biomedical Center, Ludwig-Maximilians-Universität München, Munich, Germany
| | | | - Patricia T Bozza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Christianne Bandeira-Melo
- Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Clarissa M Maya-Monteiro
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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13
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Teixeira RC, Baêta BA, Ferreira JS, Medeiros RC, Maya-Monteiro CM, Lara FA, Bell-Sakyi L, Fonseca AH. Fluorescent membrane markers elucidate the association of Borrelia burgdorferi with tick cell lines. ACTA ACUST UNITED AC 2017; 49:S0100-879X2016000700601. [PMID: 27332772 PMCID: PMC4918789 DOI: 10.1590/1414-431x20165211] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 03/28/2016] [Indexed: 11/23/2022]
Abstract
This study aimed to describe the association of Borrelia burgdorferi
s.s. with ixodid tick cell lines by flow cytometry and fluorescence and confocal
microscopy. Spirochetes were stained with a fluorescent membrane marker (PKH67 or
PKH26), inoculated into 8 different tick cell lines and incubated at 30°C for 24 h.
PKH efficiently stained B. burgdorferi without affecting bacterial
viability or motility. Among the tick cell lines tested, the Rhipicephalus
appendiculatus cell line RA243 achieved the highest percentage of
association/internalization, with both high (90%) and low (10%) concentrations of
BSK-H medium in tick cell culture medium. Treatment with cytochalasin D dramatically
reduced the average percentage of cells with internalized spirochetes, which passed
through a dramatic morphological change during their internalization by the host cell
as observed in time-lapse photography. Almost all of the fluorescent bacteria were
seen to be inside the tick cells. PKH labeling of borreliae proved to be a reliable
and valuable tool to analyze the association of spirochetes with host cells by flow
cytometry, confocal and fluorescence microscopy.
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Affiliation(s)
- R C Teixeira
- Universidade Federal Rural do Rio de Janeiro, Universidade Federal Rural do Rio de Janeiro, Laboratório de Doenças Parasitárias, Instituto de Veterinária, Seropédica, RJ , Brasil, Laboratório de Doenças Parasitárias, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil
| | - B A Baêta
- Universidade Federal Rural do Rio de Janeiro, Universidade Federal Rural do Rio de Janeiro, Laboratório de Doenças Parasitárias, Instituto de Veterinária, Seropédica, RJ , Brasil, Laboratório de Doenças Parasitárias, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil
| | - J S Ferreira
- Fundação Oswaldo Cruz, Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Rio de Janeiro, RJ , Brasil, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - R C Medeiros
- Fundação Oswaldo Cruz, Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Rio de Janeiro, RJ , Brasil, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - C M Maya-Monteiro
- Fundação Oswaldo Cruz, Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Rio de Janeiro, RJ , Brasil, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - F A Lara
- Fundação Oswaldo Cruz, Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Rio de Janeiro, RJ , Brasil, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - L Bell-Sakyi
- The Pirbright Institute, The Pirbright Institute, The Tick Cell Biobank, Pirbright , UK, The Tick Cell Biobank, The Pirbright Institute, Pirbright, UK
| | - A H Fonseca
- Universidade Federal Rural do Rio de Janeiro, Universidade Federal Rural do Rio de Janeiro, Laboratório de Doenças Parasitárias, Instituto de Veterinária, Seropédica, RJ , Brasil, Laboratório de Doenças Parasitárias, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil
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Alves-Bezerra M, Ramos IB, De Paula IF, Maya-Monteiro CM, Klett EL, Coleman RA, Gondim KC. Deficiency of glycerol-3-phosphate acyltransferase 1 decreases triacylglycerol storage and induces fatty acid oxidation in insect fat body. Biochim Biophys Acta Mol Cell Biol Lipids 2017; 1862:324-336. [DOI: 10.1016/j.bbalip.2016.12.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 12/06/2016] [Accepted: 12/08/2016] [Indexed: 12/19/2022]
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15
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Zamith-Miranda D, Palma ML, Matos GS, Schiebel JG, Maya-Monteiro CM, Aronovich M, Bozza PT, Bozza FA, Nimrichter L, Montero-Lomeli M, Marques ET, Martins FS, Douradinha B. Lipid droplet levels vary heterogeneously in response to simulated gastrointestinal stresses in different probiotic Saccharomyces cerevisiae strains. J Funct Foods 2016. [DOI: 10.1016/j.jff.2015.12.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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16
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Barletta ABF, Alves LR, Silva MCLN, Sim S, Dimopoulos G, Liechocki S, Maya-Monteiro CM, Sorgine MHF. Emerging role of lipid droplets in Aedes aegypti immune response against bacteria and Dengue virus. Sci Rep 2016; 6:19928. [PMID: 26887863 PMCID: PMC4757862 DOI: 10.1038/srep19928] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 12/21/2015] [Indexed: 12/19/2022] Open
Abstract
In mammals, lipid droplets (LDs) are ubiquitous organelles that modulate immune and inflammatory responses through the production of lipid mediators. In insects, it is unknown whether LDs play any role during the development of immune responses. We show that Aedes aegypti Aag2 cells – an immune responsive cell lineage – accumulates LDs when challenged with Enterobacter cloacae, Sindbis, and Dengue viruses. Microarray analysis of Aag2 challenged with E.cloacae or infected with Dengue virus revealed high transcripts levels of genes associated with lipid storage and LDs biogenesis, correlating with the increased LDs numbers in those conditions. Similarly, in mosquitoes, LDs accumulate in midgut cells in response to Serratia marcescens and Sindbis virus or when the native microbiota proliferates, following a blood meal. Also, constitutive activation of Toll and IMD pathways by knocking-down their respective negative modulators (Cactus and Caspar) increases LDs numbers in the midgut. Our results show for the first time an infection-induced LDs accumulation in response to both bacterial and viral infections in Ae. Aegypti, and we propose a role for LDs in mosquito immunity. These findings open new venues for further studies in insect immune responses associated with lipid metabolism.
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Affiliation(s)
- Ana Beatriz Ferreira Barletta
- Laboratório de Bioquímica de Artrópodes Hematófagos, Instituto de Bioquímica Médica Leopoldo De Meis, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Brasil
| | - Liliane Rosa Alves
- Instituto Nacional de Câncer, Hospital do Câncer II, Rio de Janeiro, RJ, Brasil
| | - Maria Clara L Nascimento Silva
- Laboratório de Bioquímica de Artrópodes Hematófagos, Instituto de Bioquímica Médica Leopoldo De Meis, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Shuzhen Sim
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - George Dimopoulos
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - Sally Liechocki
- Laboratory of Immunopharmacology, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - Clarissa M Maya-Monteiro
- Laboratory of Immunopharmacology, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - Marcos H Ferreira Sorgine
- Laboratório de Bioquímica de Artrópodes Hematófagos, Instituto de Bioquímica Médica Leopoldo De Meis, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil.,Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Brasil
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Fazolini NPB, Cruz ALS, Werneck MBF, Viola JPB, Maya-Monteiro CM, Bozza PT. Leptin activation of mTOR pathway in intestinal epithelial cell triggers lipid droplet formation, cytokine production and increased cell proliferation. Cell Cycle 2015; 14:2667-76. [PMID: 26017929 PMCID: PMC4614828 DOI: 10.1080/15384101.2015.1041684] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Accumulating evidence suggests that obesity and enhanced inflammatory reactions are predisposing conditions for developing colon cancer. Obesity is associated with high levels of circulating leptin. Leptin is an adipocytokine that is secreted by adipose tissue and modulates immune response and inflammation. Lipid droplets (LD) are organelles involved in lipid metabolism and production of inflammatory mediators, and increased numbers of LD were observed in human colon cancer. Leptin induces the formation of LD in macrophages in a PI3K/mTOR pathway-dependent manner. Moreover, the mTOR is a serine/threonine kinase that plays a key role in cellular growth and is frequently altered in tumors. We therefore investigated the role of leptin in the modulation of mTOR pathway and regulation of lipid metabolism and inflammatory phenotype in intestinal epithelial cells (IEC-6 cells). We show that leptin promotes a dose- and time-dependent enhancement of LD formation. The biogenesis of LD was accompanied by enhanced CXCL1/CINC-1, CCL2/MCP-1 and TGF-β production and increased COX-2 expression in these cells. We demonstrated that leptin-induced increased phosphorylation of STAT3 and AKT and a dose and time-dependent mTORC activation with enhanced phosphorilation of the downstream protein P70S6K protein. Pre-treatment with rapamycin significantly inhibited leptin effects in LD formation, COX-2 and TGF-β production in IEC-6 cells. Moreover, leptin was able to stimulate the proliferation of epithelial cells on a mTOR-dependent manner. We conclude that leptin regulates lipid metabolism, cytokine production and proliferation of intestinal cells through a mechanism largely dependent on activation of the mTOR pathway, thus suggesting that leptin-induced mTOR activation may contribute to the obesity-related enhanced susceptibility to colon carcinoma.
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Affiliation(s)
- Narayana P B Fazolini
- a Laboratory of Immunopharmacology; Oswaldo Cruz Institute; FIOCRUZ ; Rio de Janeiro , Brazil
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18
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Silva KR, Liechocki S, Carneiro JR, Claudio-da-Silva C, Maya-Monteiro CM, Borojevic R, Baptista LS. Stromal-vascular fraction content and adipose stem cell behavior are altered in morbid obese and post bariatric surgery ex-obese women. Stem Cell Res Ther 2015; 6:72. [PMID: 25884374 PMCID: PMC4435525 DOI: 10.1186/s13287-015-0029-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 01/29/2015] [Accepted: 03/02/2015] [Indexed: 12/11/2022] Open
Abstract
INTRODUCTION Subcutaneous adipose tissue is an interesting source of autologous stem cells with a fundamental role in the pathophysiology of obesity, metabolic syndromes and insulin resistance. We hypothesize that obesity could alter the stromal-vascular fraction (SVF) and adipose stem cell (ASCs) functions, which could compromise its regenerative behavior. Furthermore, we aimed to evaluate whether ASCs derived from post bariatric surgery ex-obese women maintain their functions in a similar fashion as do those from individuals who have never been obese. METHODS The SVF of subcutaneous adipose tissue from control (n = 6, body mass index - BMI - 27.5 ± 0.5 kg/m(2)), obese (n = 12, BMI 46.2 ± 5.1 kg/m(2)) and post bariatric surgery ex-obese (n = 7, initial BMI 47.8 ± 1.3 kg/m(2); final BMI 28.1 ± 1.1 kg/m(2)) women were isolated and evaluated by flow cytometry. ASCs were tested for lipid accumulation by perilipin, adipose differentiation-related protein (ADRP) and Oil Red O staining after adipogenic stimulus. The cytokines secreted by the ASCs and after lipid accumulation induction were also evaluated. RESULTS The subcutaneous adipose tissue of obese and post bariatric surgery ex-obese women was enriched in pericytes (p = 0.0345). The number of supra-adventitial cells was not altered in the obese patients, but it was highly enriched in the post bariatric surgery ex-obese women (p = 0.0099). The ASCs of the post bariatric surgery ex-obese patients secreted more MCP-1 (monocyte chemoattractant protein-1; p = 0.0078). After lipid accumulation induction, the ASCs of the patients in all groups secreted less IL-6 than the ASCs with no adipogenic stimulus (p < 0.0001). Obese ASCs with lipid accumulation secreted the highest amount of IL-6 (p < 0.001) whereas the ASCs from the controls secreted the highest amount of adiponectin (p < 0.0001). The ASCs from the post bariatric surgery ex-obese patients showed the highest levels of lipid accumulation whereas those from the obese women had the lowest levels (p < 0.0001). CONCLUSIONS SVF content and ASC behavior are altered in the subcutaneous adipose tissue of morbid obese women; these changes are not completely restored after bariatric surgery-induced weight loss. The cellular alterations described in this study could affect the regenerative effects of adipose stem cells. Further investigations are required to avoid jeopardizing the development of autologous stem cell-based therapies.
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Affiliation(s)
- Karina R Silva
- Programa de Pós-graduação em Clínica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941-913, Brazil. .,Núcleo Multidisciplinar de Pesquisa UFRJ - Xerém em Biologia (Numpex-Bio), Universidade Federal do Rio de Janeiro, Polo Xerém, Duque de Caxias, RJ 25245-390, Brazil. .,Programa de Bioengenharia, Diretoria de Programas, Instituto Nacional de Metrologia, Qualidade e Tecnologia (Inmetro), Duque de Caxias, RJ 25250-020, Brazil.
| | - Sally Liechocki
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ 21.040-900, Brazil.
| | - João R Carneiro
- Departamento de Nutrologia do Hospital Universitário Clementino Fraga Filho, Universidade Fereal do Rio de Janeiro, Rio de Janeiro, RJ 21941-913, Brazil.
| | - Cesar Claudio-da-Silva
- Serviço de Cirurgia Plástica, Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941-913, Brazil.
| | - Clarissa M Maya-Monteiro
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ 21.040-900, Brazil.
| | - Radovan Borojevic
- Programa de Pós-graduação em Clínica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941-913, Brazil. .,Programa de Bioengenharia, Diretoria de Programas, Instituto Nacional de Metrologia, Qualidade e Tecnologia (Inmetro), Duque de Caxias, RJ 25250-020, Brazil.
| | - Leandra S Baptista
- Programa de Pós-graduação em Clínica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941-913, Brazil. .,Núcleo Multidisciplinar de Pesquisa UFRJ - Xerém em Biologia (Numpex-Bio), Universidade Federal do Rio de Janeiro, Polo Xerém, Duque de Caxias, RJ 25245-390, Brazil. .,Programa de Bioengenharia, Diretoria de Programas, Instituto Nacional de Metrologia, Qualidade e Tecnologia (Inmetro), Duque de Caxias, RJ 25250-020, Brazil.
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Alves LR, Costa ES, Sorgine MHF, Nascimento-Silva MCL, Teodosio C, Bárcena P, Castro-Faria-Neto HC, Bozza PT, Orfao A, Oliveira PL, Maya-Monteiro CM. Heme-oxygenases during erythropoiesis in K562 and human bone marrow cells. PLoS One 2011; 6:e21358. [PMID: 21765894 PMCID: PMC3135583 DOI: 10.1371/journal.pone.0021358] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Accepted: 05/30/2011] [Indexed: 01/20/2023] Open
Abstract
In mammalian cells, heme can be degraded by heme-oxygenases (HO). Heme-oxygenase 1 (HO-1) is known to be the heme inducible isoform, whereas heme-oxygenase 2 (HO-2) is the constitutive enzyme. Here we investigated the presence of HO during erythroid differentiation in human bone marrow erythroid precursors and K562 cells. HO-1 mRNA and protein expression levels were below limits of detection in K562 cells. Moreover, heme was unable to induce HO-1, at the protein and mRNA profiles. Surprisingly, HO-2 expression was inhibited upon incubation with heme. To evaluate the physiological relevance of these findings, we analyzed HO expression during normal erythropoiesis in human bone marrow. Erythroid precursors were characterized by lack of significant expression of HO-1 and by progressive reduction of HO-2 during differentiation. FLVCR expression, a recently described heme exporter found in erythroid precursors, was also analyzed. Interestingly, the disruption in the HO detoxification system was accompanied by a transient induction of FLVCR. It will be interesting to verify if the inhibition of HO expression, that we found, is preventing a futile cycle of concomitant heme synthesis and catabolism. We believe that a significant feature of erythropoiesis could be the replacement of heme breakdown by heme exportation, as a mechanism to prevent heme toxicity.
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Affiliation(s)
- Liliane R. Alves
- Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Elaine S. Costa
- Instituto de Pediatria e Puericultura Martagão Gesteira, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcos H. F. Sorgine
- Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Cristina Teodosio
- Centro de Investigación del Cáncer, Departamento de Medicina and Servicio de Citometria, Universidad de Salamanca, Salamanca, Spain
| | - Paloma Bárcena
- Centro de Investigación del Cáncer, Departamento de Medicina and Servicio de Citometria, Universidad de Salamanca, Salamanca, Spain
| | - Hugo C. Castro-Faria-Neto
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Patrícia T. Bozza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Alberto Orfao
- Centro de Investigación del Cáncer, Departamento de Medicina and Servicio de Citometria, Universidad de Salamanca, Salamanca, Spain
| | - Pedro L. Oliveira
- Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Rio de Janeiro, Brazil
- * E-mail: (CMMM); (PLO)
| | - Clarissa M. Maya-Monteiro
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
- * E-mail: (CMMM); (PLO)
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Monteiro APT, Pinheiro CS, Luna-Gomes T, Alves LR, Maya-Monteiro CM, Porto BN, Barja-Fidalgo C, Benjamim CF, Peters-Golden M, Bandeira-Melo C, Bozza MT, Canetti C. Leukotriene B4Mediates Neutrophil Migration Induced by Heme. J I 2011; 186:6562-7. [DOI: 10.4049/jimmunol.1002400] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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21
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Bozaquel-Morais BL, Madeira JB, Maya-Monteiro CM, Masuda CA, Montero-Lomeli M. A new fluorescence-based method identifies protein phosphatases regulating lipid droplet metabolism. PLoS One 2010; 5:e13692. [PMID: 21060891 PMCID: PMC2965658 DOI: 10.1371/journal.pone.0013692] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2010] [Accepted: 10/06/2010] [Indexed: 11/19/2022] Open
Abstract
In virtually every cell, neutral lipids are stored in cytoplasmic structures called lipid droplets (LDs) and also referred to as lipid bodies or lipid particles. We developed a rapid high-throughput assay based on the recovery of quenched BODIPY-fluorescence that allows to quantify lipid droplets. The method was validated by monitoring lipid droplet turnover during growth of a yeast culture and by screening a group of strains deleted in genes known to be involved in lipid metabolism. In both tests, the fluorimetric assay showed high sensitivity and good agreement with previously reported data using microscopy. We used this method for high-throughput identification of protein phosphatases involved in lipid droplet metabolism. From 65 yeast knockout strains encoding protein phosphatases and its regulatory subunits, 13 strains revealed to have abnormal levels of lipid droplets, 10 of them having high lipid droplet content. Strains deleted for type I protein phosphatases and related regulators (ppz2, gac1, bni4), type 2A phosphatase and its related regulator (pph21 and sap185), type 2C protein phosphatases (ptc1, ptc4, ptc7) and dual phosphatases (pps1, msg5) were catalogued as high-lipid droplet content strains. Only reg1, a targeting subunit of the type 1 phosphatase Glc7p, and members of the nutrient-sensitive TOR pathway (sit4 and the regulatory subunit sap190) were catalogued as low-lipid droplet content strains, which were studied further. We show that Snf1, the homologue of the mammalian AMP-activated kinase, is constitutively phosphorylated (hyperactive) in sit4 and sap190 strains leading to a reduction of acetyl-CoA carboxylase activity. In conclusion, our fast and highly sensitive method permitted us to catalogue protein phosphatases involved in the regulation of LD metabolism and present evidence indicating that the TOR pathway and the SNF1/AMPK pathway are connected through the Sit4p-Sap190p pair in the control of lipid droplet biogenesis.
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Affiliation(s)
- Bruno L. Bozaquel-Morais
- Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Juliana B. Madeira
- Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Clarissa M. Maya-Monteiro
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Manguinhos, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Claudio A. Masuda
- Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mónica Montero-Lomeli
- Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail:
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Magalhães KG, Almeida PE, Atella GC, Maya-Monteiro CM, Castro-Faria-Neto HC, Pelajo-Machado M, Lenzi HL, Bozza MT, Bozza PT. Schistosomal‐derived lysophosphatidylcholine are involved in eosinophil activation and recruitment through Toll‐like receptor-2-dependent mechanisms. J Infect Dis 2010; 202:1369-79. [PMID: 20863227 DOI: 10.1086/656477] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Parasite‐derived lipids may play important roles in host‐pathogen interactions and escape mechanisms. Herein, we evaluated the role of schistosomal‐derived lipids in Toll‐like receptor (TLR)-2 and eosinophil activation in Schistosoma mansoni infection. Mice lacking TLR2 exhibited reduced liver eosinophilic granuloma, compared with that of wild‐type animals, following S. mansoni infection. Decreased eosinophil accumulation and eosinophil lipid body (lipid droplet) formation, at least partially due to reduced production of eotaxin, interleukin (IL)‐5, and IL‐13 in S. mansoni-infected TLR2-/- mice, compared with the corresponding production in wild‐type mice, was noted. Although no differences were observed in survival rates during the acute schistosomal infection (up to 50 days), increased survival of TLR2-/- mice, compared with survival of wild‐type mice, was observed during the chronic phase of infection. Schistosomal lipid extract– and schistosomal‐derived lysophosphatidylcholine (lyso‐PC)-stimulated macrophages in vitro induced TLR2‐dependent NF‐kB activation and cytokine production. Furthermore, in vivo schistosomal lyso‐PC administration induced eosinophil recruitment and cytokine production, in a mechanism largely dependent on TLR2. Taken together, our results suggest that schistosomal‐derived lyso‐PC may participate in cytokine production and eosinophil activation through a TLR2‐dependent pathway in S. mansoni infection. Moreover, our results suggest that TLR2‐dependent inflammatory reaction, cytokine production, and eosinophil recruitment and activation may contribute to the pathogenesis and lethality in the chronic phase of infection.
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Affiliation(s)
- Kelly G Magalhães
- Laboratório de Imunofarmacologia and 2Laboratório de Patologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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Paiva LA, Maya-Monteiro CM, Bandeira-Melo C, Silva PMR, El-Cheikh MC, Teodoro AJ, Borojevic R, Perez SAC, Bozza PT. Interplay of cysteinyl leukotrienes and TGF-β in the activation of hepatic stellate cells from Schistosoma mansoni granulomas. Biochim Biophys Acta Mol Cell Biol Lipids 2010; 1801:1341-8. [PMID: 20817008 DOI: 10.1016/j.bbalip.2010.08.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2010] [Revised: 08/19/2010] [Accepted: 08/27/2010] [Indexed: 12/22/2022]
Abstract
Hepatic stellate cells (HSCs) have a critical role in liver physiology, and in the pathogenesis of liver inflammation and fibrosis. Here, we investigated the interplay between leukotrienes (LT) and TGF-β in the activation mechanisms of HSCs from schistosomal granulomas (GR-HSCs). First, we demonstrated that GR-HSCs express 5-lipoxygenase (5-LO), as detected by immunolocalization in whole cells and confirmed in cell lysates through western blotting and by mRNA expression through RT-PCR. Moreover, mRNA expression of 5-LO activating protein (FLAP) and LTC(4)-synthase was also documented, indicating that GR-HSCs have the molecular machinery required for LT synthesis. Morphological analysis of osmium and Oil-Red O-stained HSC revealed large numbers of small lipid droplets (also known as lipid bodies). We observed co-localization of lipid droplet protein marker (ADRP) and 5-LO by immunofluorescence microscopy. We demonstrated that GR-HSCs were able to spontaneously release cysteinyl-LTs (CysLTs), but not LTB(4,) into culture supernatants. CysLT production was highly enhanced after TGF-β-stimulation. Moreover, the 5-LO inhibitor zileuton and 5-LO gene deletion were able to inhibit the TGF-β-stimulated proliferation of GR-HSCs, suggesting a role for LTs in HSC activation. Here, we extend the immunoregulatory function of HSC by demonstrating that HSC from liver granulomas of schistosome-infected mouse are able to release Cys-LTs in a TGF-β-regulated manner, potentially impacting pathogenesis and liver fibrosis in schistosomiasis.
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Affiliation(s)
- Ligia A Paiva
- Laboratory of Immunopharmacology, Institute Oswaldo Cruz, Manguinhos, Rio de Janeiro, RJ, Brazil
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Bozza PT, D’Avila H, Almeida PE, Magalhães KG, Molinaro R, Almeida CJ, Maya-Monteiro CM. Lipid droplets in host–pathogen interactions. ACTA ACUST UNITED AC 2009. [DOI: 10.2217/clp.09.63] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Silva AR, Pacheco P, Vieira-de-Abreu A, Maya-Monteiro CM, D'Alegria B, Magalhães KG, de Assis EF, Bandeira-Melo C, Castro-Faria-Neto HC, Bozza PT. Lipid bodies in oxidized LDL-induced foam cells are leukotriene-synthesizing organelles: a MCP-1/CCL2 regulated phenomenon. Biochim Biophys Acta Mol Cell Biol Lipids 2009; 1791:1066-75. [DOI: 10.1016/j.bbalip.2009.06.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2008] [Revised: 06/09/2009] [Accepted: 06/23/2009] [Indexed: 12/01/2022]
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Almeida PE, Silva AR, Maya-Monteiro CM, Töröcsik D, D′Ávila H, Dezsö B, Magalhães KG, Castro-Faria-Neto HC, Nagy L, Bozza PT. Mycobacterium bovisBacillus Calmette-Guérin Infection Induces TLR2-Dependent Peroxisome Proliferator-Activated Receptor γ Expression and Activation: Functions in Inflammation, Lipid Metabolism, and Pathogenesis. J Immunol 2009; 183:1337-45. [DOI: 10.4049/jimmunol.0900365] [Citation(s) in RCA: 134] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Moreira LS, Piva B, Gentile LB, Mesquita-Santos FP, D'Avila H, Maya-Monteiro CM, Bozza PT, Bandeira-Melo C, Diaz BL. Cytosolic phospholipase A2-driven PGE2 synthesis within unsaturated fatty acids-induced lipid bodies of epithelial cells. Biochim Biophys Acta Mol Cell Biol Lipids 2009; 1791:156-65. [PMID: 19367763 DOI: 10.1016/j.bbalip.2009.01.003] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cytoplasmic lipid bodies (also known as lipid droplets) are intracellular deposits of arachidonic acid (AA), which can be metabolized for eicosanoid generation. PGE2 is a major AA metabolite produced by epithelial cells and can modulate restoration of epithelium homeostasis after injury. We studied lipid body biogenesis and their role in AA metabolic pathway in an epithelial cell line derived from normal rat intestinal epithelium, IEC-6 cells. Lipid bodies were virtually absent in confluent IEC-6 cells. Stimulation of confluent IEC-6 cells with unsaturated fatty acids, including AA or oleic acid (OA), induced rapid lipid body assembly that was independent on its metabolism to PGE(2), but dependent on G-coupled receptor-driven signaling through p38, PKC, and PI3 K. Newly formed lipid bodies compartmentalized cytosolic phospholipase (cPL)A(2)-alpha, while facilitated AA mobilization and synthesis of PGE(2) within epithelial cells. Thus, both lipid body-related events, including highly regulated biogenesis and functional assembly of cPLA (2)-alpha-driven enhanced AA mobilization and PGE(2)production, may have key roles in epithelial cell-driven inflammatory functions, and may represent relevant therapeutic targets of epithelial pathologies.
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Affiliation(s)
- Luciana S Moreira
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil
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Abstract
Leptin is both a hormone/cytokine that plays a major role in the regulation of feeding and energy expenditure. Beyond its central role in the hypothalamus, leptin modulates peripheral tissues' responses to growth and storage based on nutrient availability, and it regulates the innate and adaptive immune responses. mTOR (mammalian Target of Rapamycin) is a core component of intracellular signaling for cellular growth, mRNA translation, and metabolism. Here, we review recent findings on the cross talk between mTOR and leptin signaling. Important roles for mTOR on leptin signaling have been established both in hypothalamic centers to control food intake and in peripheral cells to regulate lipid metabolism and inflammation. Leptin directly activates resident macrophages to form ADRP-enriched lipid droplets and enhances eicosanoid production via a mechanism that is dependent on activation of the PI3K/mTOR pathway. Leptin-induced mTOR activation may have implications for obesity-related pathophysiological conditions such as diabetes, cardiovascular disease and cancer.
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Affiliation(s)
- Clarissa M Maya-Monteiro
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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Accioly MT, Pacheco P, Maya-Monteiro CM, Carrossini N, Robbs BK, Oliveira SS, Kaufmann C, Morgado-Diaz JA, Bozza PT, Viola JPB. Lipid bodies are reservoirs of cyclooxygenase-2 and sites of prostaglandin-E2 synthesis in colon cancer cells. Cancer Res 2008; 68:1732-40. [PMID: 18339853 DOI: 10.1158/0008-5472.can-07-1999] [Citation(s) in RCA: 254] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Lipid bodies (lipid droplets) are emerging as dynamic organelles involved in lipid metabolism and inflammation. Increased lipid body numbers have been described in tumor cells; however, its functional significance in cancer has never been addressed. Here, we showed increased number of lipid bodies in tumor tissues from patients with adenocarcinoma of colon submitted to surgical resection when compared with an adjacent normal tissue. Accordingly, increased numbers of lipid bodies were observed in human colon adenocarcinoma cell lines and in a H-rasV12-transformed intestinal epithelial cell line (IEC-6 H-rasV12) compared with nontransformed IEC-6 cells. The functions of lipid bodies in eicosanoid synthesis in cancer cells were investigated. CACO-2 cells have increased expression of cyclooxygenase-2 (COX-2) when compared with IEC-6 cells. We showed by immunolocalization that, in addition to perinuclear stain, COX-2 and prostaglandin E (PGE) synthase present punctate cytoplasmic localizations that were concordant with adipose differentiation-related protein-labeled lipid bodies. The colocalization of COX-2 at lipid bodies was confirmed by immunoblot of subcellular fractionated cells. Direct localization of PGE(2) at its synthesis locale showed that lipid bodies are sources of eicosanoids in the transformed colon cancer cells. Treatment with either aspirin or the fatty acid synthase inhibitor C75 significantly reduced the number of lipid bodies and PGE(2) production in CACO-2 and in IEC-6 H-rasV12 cells with effects in cell proliferation. Together, our results showed that lipid bodies in colon cancer cells are dynamic and functional active organelles centrally involved in PGE(2) synthesis and may potentially have implications in the pathogenesis of adenocarcinoma of colon.
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Affiliation(s)
- Maria T Accioly
- Division of Cellular Biology, National Cancer Institute, Rio de Janeiro, Brazil
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30
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Pacheco P, Vieira-de-Abreu A, Gomes RN, Barbosa-Lima G, Wermelinger LB, Maya-Monteiro CM, Silva AR, Bozza MT, Castro-Faria-Neto HC, Bandeira-Melo C, Bozza PT. Monocyte Chemoattractant Protein-1/CC Chemokine Ligand 2 Controls Microtubule-Driven Biogenesis and Leukotriene B4-Synthesizing Function of Macrophage Lipid Bodies Elicited by Innate Immune Response. J Immunol 2007; 179:8500-8. [DOI: 10.4049/jimmunol.179.12.8500] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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31
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Maya-Monteiro CM, Almeida PE, D'Avila H, Martins AS, Rezende AP, Castro-Faria-Neto H, Bozza PT. Leptin induces macrophage lipid body formation by a phosphatidylinositol 3-kinase- and mammalian target of rapamycin-dependent mechanism. J Biol Chem 2007; 283:2203-10. [PMID: 18039669 DOI: 10.1074/jbc.m706706200] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Leptin is an adipocyte-derived hormone/cytokine that links nutritional status with neuroendocrine and immune functions. Lipid bodies (lipid droplets) are emerging as dynamic organelles with roles in lipid metabolism and inflammation. Here we investigated the roles of leptin in signaling pathways involved in cytoplasmic lipid body biogenesis and leukotriene B(4) synthesis in macrophages. Our results demonstrated that leptin directly activated macrophages and induced the formation of adipose differentiation-related protein-enriched lipid bodies. Newly formed lipid bodies were sites of 5-lipoxygenase localization and correlated with an enhanced capacity of leukotriene B(4) production. We demonstrated that leptin-induced macrophage activation was dependent on phosphatidylinositol 3-kinase (PI3K) activity, since the lipid body formation was inhibited by LY294002 and was absent in the PI3K knock-out mice. Leptin induces phosphorylation of p70(S6K) and 4EBP1 key downstream signaling intermediates of the mammalian target of rapamycin (mTOR) pathway in a rapamycin-sensitive mechanism. The mTOR inhibitor, rapamycin, inhibited leptin-induced lipid body formation, both in vivo and in vitro. In addition, rapamycin inhibited leptin-induced adipose differentiation-related protein accumulation in macrophages and lipid body-dependent leukotriene synthesis, demonstrating a key role for mTOR in lipid body biogenesis and function. Our results establish PI3K/mTOR as an important signaling pathway for leptin-induced cytoplasmic lipid body biogenesis and adipose differentiation-related protein accumulation. Furthermore, we demonstrate a previously unrecognized link between intracellular (mTOR) and systemic (leptin) nutrient sensors in macrophage lipid metabolism. Leptin-induced increased formation of cytoplasmic lipid bodies and enhanced inflammatory mediator production in macrophages may have implications for obesity-related cardiovascular diseases.
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Affiliation(s)
- Clarissa M Maya-Monteiro
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, Rio de Janeiro, RJ21045-900 Brazil.
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32
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Corrêa Soares JBR, Maya-Monteiro CM, Bittencourt-Cunha PRB, Atella GC, Lara FA, d'Avila JCP, Menezes D, Vannier-Santos MA, Oliveira PL, Egan TJ, Oliveira MF. Extracellular lipid droplets promote hemozoin crystallization in the gut of the blood flukeSchistosoma mansoni. FEBS Lett 2007; 581:1742-50. [PMID: 17418143 DOI: 10.1016/j.febslet.2007.03.054] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2006] [Revised: 02/08/2007] [Accepted: 03/20/2007] [Indexed: 11/28/2022]
Abstract
Hemozoin (Hz) is a heme crystal produced upon hemoglobin digestion as the main mechanism of heme disposal in several hematophagous organisms. Here, we show that, in the helminth Schistosoma mansoni, Hz formation occurs in extracellular lipid droplets (LDs). Transmission electron microscopy of adult worms revealed the presence of numerous electron-lucent round structures similar to LDs in gut lumen, where multicrystalline Hz assemblies were found associated to their surfaces. Female regurgitates promoted Hz formation in vitro in reactions partially inhibited by boiling. Fractionation of regurgitates showed that Hz crystallization activity was essentially concentrated on lower density fractions, which have small amounts of pre-formed Hz crystals, suggesting that hydrophilic-hydrophobic interfaces, and not Hz itself, play a key catalytic role in Hz formation in S. mansoni. Thus, these data demonstrate that LDs present in the gut lumen of S. mansoni support Hz formation possibly by allowing association of heme to the lipid-water interface of these structures.
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Affiliation(s)
- Juliana B R Corrêa Soares
- Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Cidade Universitária, Rio de Janeiro, RJ, Brazil
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33
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Paiva-Silva GO, Cruz-Oliveira C, Nakayasu ES, Maya-Monteiro CM, Dunkov BC, Masuda H, Almeida IC, Oliveira PL. A heme-degradation pathway in a blood-sucking insect. Proc Natl Acad Sci U S A 2006; 103:8030-5. [PMID: 16698925 PMCID: PMC1472424 DOI: 10.1073/pnas.0602224103] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Hematophagous insects are vectors of diseases that affect hundreds of millions of people worldwide. A common physiological event in the life of these insects is the hydrolysis of host hemoglobin in the digestive tract, leading to a massive release of heme, a known prooxidant molecule. Diverse organisms, from bacteria to plants, express the enzyme heme oxygenase, which catalyzes the oxidative degradation of heme to biliverdin (BV) IX, CO, and iron. Here, we show that the kissing bug Rhodnius prolixus, a vector of Chagas' disease, has a unique heme-degradation pathway wherein heme is first modified by addition of two cysteinylglycine residues before cleavage of the porphyrin ring, followed by trimming of the dipeptides. Furthermore, in contrast to most known heme oxygenases, which generate BV IXalpha, in this insect, the end product of heme detoxification is a dicysteinyl-BV IXgamma. Based on these results, we propose a heme metabolizing pathway that includes the identified intermediates produced during modification and cleavage of the heme porphyrin ring.
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Affiliation(s)
- Gabriela O. Paiva-Silva
- *Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, CEP 21941-590, Rio de Janeiro, Brazil
| | - Christine Cruz-Oliveira
- *Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, CEP 21941-590, Rio de Janeiro, Brazil
| | - Ernesto S. Nakayasu
- Department of Biological Sciences, University of Texas, El Paso, TX 79968-0519
- Departamento de Parasitologia, Universidade de São Paulo, São Paulo, SP 05508-900, Brazil
| | - Clarissa M. Maya-Monteiro
- Departamento de Fisiologia e Farmacodinâmica, Instituto Oswaldo Cruz, RJ, 21045-900, Rio de Janeiro, Brazil; and
| | - Boris C. Dunkov
- Department of Biochemistry and Molecular Biophysics, Center for Insect Science, University of Arizona, Tucson, AZ 85721
| | - Hatisaburo Masuda
- *Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, CEP 21941-590, Rio de Janeiro, Brazil
| | - Igor C. Almeida
- Department of Biological Sciences, University of Texas, El Paso, TX 79968-0519
- Departamento de Parasitologia, Universidade de São Paulo, São Paulo, SP 05508-900, Brazil
- **To whom correspondence may be addressed at:
Department of Biological Sciences, University of Texas, 500 West University Avenue, El Paso, TX 79968-0519. E-mail:
| | - Pedro L. Oliveira
- *Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, CEP 21941-590, Rio de Janeiro, Brazil
- To whom correspondence may be addressed at:
Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, CCS, Sala 5 Bloco D subsolo, Ilha do Fundão, 21941-590, Rio de Janeiro, Brazil. E-mail:
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Medeiros MN, Mendonça LH, Hunter AL, Paiva-Silva GO, Mello FG, Henze IP, Masuda H, Maya-Monteiro CM, Machado EA. The role of lipoxygenase products on the endocytosis of yolk proteins in insects: participation of cAMP. Arch Insect Biochem Physiol 2004; 55:178-187. [PMID: 15027072 DOI: 10.1002/arch.10129] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The participation of eicosanoids and second messengers in the regulation of endocytosis by the ovaries was investigated using the uptake of Rhodnius heme binding protein (RHBP) as an experimental model. The rate of RHBP uptake decreased up to 40% in the presence of BWA4C and NDGA, 5 and 12-lipoxygenase inhibitors, respectively, suggesting the involvement of lipoxygenase products in endocytosis regulation. Addition of Leukotriene B4 (LTB(4); one product of the 5 lipoxygenase pathway) increased in vitro the uptake of RHBP by 30%. The content of cAMP in the Rhodnius' ovaries were monitored after treatment with different eicosanoids and inhibitors of eicosanoids synthesis. The amount of cAMP decreased in the presence of indomethacin (by 50%), while treatment with PGE(2) induced an increase of 85% of this messenger in the ovaries. The presence of LTB(4) in the medium inhibited in 60% the content of cAMP in the ovaries, while BWA4C induced a 100% increase of this messenger in the ovaries. Addition of 1 microM DBcAMP in the medium resulted in a 30% decrease in the rate of RHBP uptake. Taken together, these data show that cyclooxygenase and lipoxygenase products participate in the control of protein internalization by modulation of cAMP levels.
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Affiliation(s)
- M N Medeiros
- Laboratório de Entomologia Médica do Programa de Parasitologia e Biologia Celular, IBCCF, CCS, UFRJ, Rio de Janeiro, Brazil.
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Maya-Monteiro CM, Alves LR, Pinhal N, Abdalla DSP, Oliveira PL. HeLp, a heme-transporting lipoprotein with an antioxidant role. Insect Biochem Mol Biol 2004; 34:81-88. [PMID: 14976984 DOI: 10.1016/j.ibmb.2003.09.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Plasma lipoproteins involved in lipid transport are target for free radical-evoked pathological conditions in several mammalian models. The main hemolymphatic protein of Boophilus microplus is a heme-binding lipoprotein (HeLp, for Heme LipoProtein) that carries dietary heme produced from degradation of vertebrate hemoglobin to tissues of the tick. Addition of heme to phospholipid liposomes resulted in intense lipid peroxidation, which was inhibited by addition of HeLp. HeLp prevented lysis of red blood cells by heme. HeLp also inhibited reactions of heme with tert-butyl hydroperoxide (t-BOOH) or hydrogen peroxide. HeLp, quite differently from other lipoproteins, presents a protective intrinsic mechanism to counteract heme toxicity, while preserving the heme molecule to be reused by the tick. This is the first report of a lipoprotein acting as an antioxidant particle against heme-induced radical damage.
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Affiliation(s)
- Clarissa M Maya-Monteiro
- Departamento de Bioquímica Médica, ICB, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-590, Brazil.
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Maya-Monteiro CM, Daffre S, Logullo C, Lara FA, Alves EW, Capurro ML, Zingali R, Almeida IC, Oliveira PL. HeLp, a heme lipoprotein from the hemolymph of the cattle tick, Boophilus microplus. J Biol Chem 2000; 275:36584-9. [PMID: 10964932 DOI: 10.1074/jbc.m007344200] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The main protein of the hemolymph of the cattle tick Boophilus microplus has been isolated and shown to be a heme lipoprotein (HeLp). HeLp has an apparent molecular mass of 354,000 and contains two apoproteins (103 and 92 kDa) found in equal amounts. HeLp presents a pI of 5.8 and a density of 1.28 g/ml and contains 33% lipids, containing both neutral lipids and phospholipids, and 3% of sugars. A remarkable feature of HeLp is the abundance of cholesterol ester (35% of total lipids), a lipid not previously reported in invertebrate lipoproteins. Western blot analysis showed HeLp in hemolymph from adult females and males, but not in eggs. Although HeLp contains 2 heme molecules, it is capable of binding 6 additional molecules of heme. Boophilus feeds large amount of blood, and we recently showed that this tick is unable to perform de novo synthesis of heme (Braz, G. R. C., Coelho, H. S. L., Masuda, H., and Oliveira, P. L. (1999) Curr. Biol. 9, 703-706). Injection of tick females with (55)Fe-labeled heme-HeLp indicated that this protein transports heme from hemolymph to tissues. HeLp is suggested to be an essential adaptation to the loss of the heme synthesis pathway.
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Affiliation(s)
- C M Maya-Monteiro
- Departamento de Bioquimica Médica, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil 21941-590.
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