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Tan YJ, Jin Y, Zhou J, Yang YF. Lipid droplets in pathogen infection and host immunity. Acta Pharmacol Sin 2024; 45:449-464. [PMID: 37993536 PMCID: PMC10834987 DOI: 10.1038/s41401-023-01189-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 10/30/2023] [Indexed: 11/24/2023] Open
Abstract
As the hub of cellular lipid metabolism, lipid droplets (LDs) have been linked to a variety of biological processes. During pathogen infection, the biogenesis, composition, and functions of LDs are tightly regulated. The accumulation of LDs has been described as a hallmark of pathogen infection and is thought to be driven by pathogens for their own benefit. Recent studies have revealed that LDs and their subsequent lipid mediators contribute to effective immunological responses to pathogen infection by promoting host stress tolerance and reducing toxicity. In this comprehensive review, we delve into the intricate roles of LDs in governing the replication and assembly of a wide spectrum of pathogens within host cells. We also discuss the regulatory function of LDs in host immunity and highlight the potential for targeting LDs for the diagnosis and treatment of infectious diseases.
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Affiliation(s)
- Yan-Jie Tan
- Center for Cell Structure and Function, Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Yi Jin
- Research Center of Translational Medicine, Central Hospital Affiliated to Shandong First Medical University, Jinan, 250013, China
| | - Jun Zhou
- Center for Cell Structure and Function, Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan, 250014, China.
- State Key Laboratory of Medicinal Chemical Biology, Haihe Laboratory of Cell Ecosystem, College of Life Sciences, Nankai University, Tianjin, 300071, China.
| | - Yun-Fan Yang
- Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
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2
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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] [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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Soares VC, Dias SSG, Santos JC, Azevedo-Quintanilha IG, Moreira IBG, Sacramento CQ, Fintelman-Rodrigues N, Temerozo JR, da Silva MAN, Barreto-Vieira DF, Souza TM, Bozza PT. Inhibition of the SREBP pathway prevents SARS-CoV-2 replication and inflammasome activation. Life Sci Alliance 2023; 6:e202302049. [PMID: 37669865 PMCID: PMC10481517 DOI: 10.26508/lsa.202302049] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 08/26/2023] [Accepted: 08/28/2023] [Indexed: 09/07/2023] Open
Abstract
SARS-CoV-2 induces major cellular lipid rearrangements, exploiting the host's metabolic pathways to replicate. Sterol regulatory element binding proteins (SREBPs) are a family of transcription factors that control lipid metabolism. SREBP1 is associated with the regulation of fatty acids, whereas SREBP2 controls cholesterol metabolism, and both isoforms are associated with lipid droplet (LD) biogenesis. Here, we evaluated the effect of SREBP in a SARS-CoV-2-infected lung epithelial cell line (Calu-3). We showed that SARS-CoV-2 infection induced the activation of SREBP1 and SREBP2 and LD accumulation. Genetic knockdown of both SREBPs and pharmacological inhibition with the dual SREBP activation inhibitor fatostatin promote the inhibition of SARS-CoV-2 replication, cell death, and LD formation in Calu-3 cells. In addition, we demonstrated that SARS-CoV-2 induced inflammasome-dependent cell death by pyroptosis and release of IL-1β and IL-18, with activation of caspase-1, cleavage of gasdermin D1, was also reduced by SREBP inhibition. Collectively, our findings help to elucidate that SREBPs are crucial host factors required for viral replication and pathogenesis. These results indicate that SREBP is a host target for the development of antiviral strategies.
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Affiliation(s)
- Vinicius Cardoso Soares
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Programa de Imunologia e Inflamação, Universidade Federal do Rio de Janeiro, (UFRJ), Rio de Janeiro, Brazil
| | - Suelen Silva Gomes Dias
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | - Julia Cunha Santos
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | - Isaclaudia G Azevedo-Quintanilha
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | - Isabela Batista Gonçalves Moreira
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | - Carolina Q Sacramento
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde (CDTS) and Instituto Nacional de Ciência e Tecnologia em Inovação em Doenças de Populações Negligenciadas (INCT/IDNP), FIOCRUZ, Rio de Janeiro, Brazil
| | - Natalia Fintelman-Rodrigues
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde (CDTS) and Instituto Nacional de Ciência e Tecnologia em Inovação em Doenças de Populações Negligenciadas (INCT/IDNP), FIOCRUZ, Rio de Janeiro, Brazil
| | - Jairo R Temerozo
- Laboratório de Pesquisas Sobre o Timo and Instituto Nacional de Ciência e Tecnologia em Neuroimunomodulação (INCT/NIM), Instituto Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | - Marcos Alexandre Nunes da Silva
- Laboratório de Morfologia e Morfogênese Viral, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | - Debora Ferreira Barreto-Vieira
- Laboratório de Morfologia e Morfogênese Viral, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
| | - Thiago Ml Souza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde (CDTS) and Instituto Nacional de Ciência e Tecnologia em Inovação em Doenças de Populações Negligenciadas (INCT/IDNP), FIOCRUZ, Rio de Janeiro, Brazil
| | - Patricia T Bozza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
- Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil
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Sivaraman K, Pino P, Raussin G, Anchisi S, Metayer C, Dagany N, Held J, Wrenger S, Welte T, Wurm MJ, Wurm FM, Olejnicka B, Janciauskiene S. Human PBMCs Form Lipid Droplets in Response to Spike Proteins. Microorganisms 2023; 11:2683. [PMID: 38004695 PMCID: PMC10672762 DOI: 10.3390/microorganisms11112683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/22/2023] [Accepted: 10/30/2023] [Indexed: 11/26/2023] Open
Abstract
Intracellular lipid droplets (LDs) can accumulate in response to inflammation, metabolic stresses, and other physiological/pathological processes. Herein, we investigated whether spike proteins of SARS-CoV-2 induce LDs in human peripheral blood mononuclear cells (PBMCs) and in pulmonary microvascular endothelial cells (HPMECs). PBMCs or HPMECs were incubated alone or with endotoxin-free recombinant variants of trimeric spike glycoproteins (Alpha, Beta, Delta, and Omicron, 12 µg/mL). Afterward, cells were stained with Oil Red O for LDs, cytokine release was determined through ELISA, and the gene expression was analyzed through real-time PCR using TaqMan assays. Our data show that spikes induce LDs in PBMCs but not in HPMECs. In line with this, in PBMCs, spike proteins lower the expression of genes involving lipid metabolism and LD formation, such as SREBF1, HMGCS1, LDLR, and CD36. On the other hand, PBMCs exposed to spikes for 6 or 18 h did not increase in IL-1β, IL-6, IL-8, MCP-1, and TNFα release or expression as compared to non-treated controls. Thus, spike-induced LD formation in PBMCs seems to not be related to cell inflammatory activation. Further detailed studies are warranted to investigate in which specific immune cells spikes induce LDs, and what are the pathophysiological mechanisms and consequences of this induction in vivo.
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Affiliation(s)
- Kokilavani Sivaraman
- Department of Respiratory Medicine, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, 30625 Hannover, Germany
| | - Paco Pino
- ExcellGene SA, 1970 Monthey, Switzerland
| | | | | | | | | | - Julia Held
- Department of Respiratory Medicine, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, 30625 Hannover, Germany
| | - Sabine Wrenger
- Department of Respiratory Medicine, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, 30625 Hannover, Germany
| | - Tobias Welte
- Department of Respiratory Medicine, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, 30625 Hannover, Germany
| | | | - Florian M. Wurm
- ExcellGene SA, 1970 Monthey, Switzerland
- Faculty of Life Sciences, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Beata Olejnicka
- Department of Respiratory Medicine, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, 30625 Hannover, Germany
| | - Sabina Janciauskiene
- Department of Respiratory Medicine, German Center for Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover Medical School, 30625 Hannover, Germany
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Dias SSG, Cunha-Fernandes T, Soares VC, de Almeida CJG, Bozza PT. Lipid droplets in Zika neuroinfection: Potential targets for intervention? Mem Inst Oswaldo Cruz 2023; 118:e230044. [PMID: 37820117 PMCID: PMC10566564 DOI: 10.1590/0074-02760230044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 08/18/2023] [Indexed: 10/13/2023] Open
Abstract
Lipid droplets (LD) are evolutionarily conserved lipid-enriched organelles with a diverse array of cell- and stimulus-regulated proteins. Accumulating evidence demonstrates that intracellular pathogens exploit LD as energy sources, replication sites, and part of the mechanisms of immune evasion. Nevertheless, LD can also favor the host as part of the immune and inflammatory response to pathogens. The functions of LD in the central nervous system have gained great interest due to their presence in various cell types in the brain and for their suggested involvement in neurodevelopment and neurodegenerative diseases. Only recently have the roles of LD in neuroinfections begun to be explored. Recent findings reveal that lipid remodelling and increased LD biogenesis play important roles for Zika virus (ZIKV) replication and pathogenesis in neural cells. Moreover, blocking LD formation by targeting DGAT-1 in vivo inhibited virus replication and inflammation in the brain. Therefore, targeting lipid metabolism and LD biogenesis may represent potential strategies for anti-ZIKV treatment development. Here, we review the progress in understanding LD functions in the central nervous system in the context of the host response to Zika infection.
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Affiliation(s)
- Suelen Silva Gomes Dias
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Imunofarmacologia, Rio de Janeiro, RJ, Brasil
- Fundação Oswaldo Cruz-Fiocruz, Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Rio de Janeiro, RJ, Brasil
| | - Tamires Cunha-Fernandes
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Imunofarmacologia, Rio de Janeiro, RJ, Brasil
- Fundação Oswaldo Cruz-Fiocruz, Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Rio de Janeiro, RJ, Brasil
| | - Vinicius Cardoso Soares
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Imunofarmacologia, Rio de Janeiro, RJ, Brasil
- Fundação Oswaldo Cruz-Fiocruz, Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Rio de Janeiro, RJ, Brasil
- Universidade Federal do Rio de Janeiro, Programa de Imunologia e Inflamação, Rio de Janeiro, RJ, Brasil
| | - Cecília JG de Almeida
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Imunofarmacologia, Rio de Janeiro, RJ, Brasil
- Fundação Oswaldo Cruz-Fiocruz, Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Rio de Janeiro, RJ, Brasil
| | - Patricia T Bozza
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Imunofarmacologia, Rio de Janeiro, RJ, Brasil
- Fundação Oswaldo Cruz-Fiocruz, Centro de Pesquisa, Inovação e Vigilância em COVID-19 e Emergências Sanitárias, Rio de Janeiro, RJ, Brasil
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Jovičić EJ, Janež AP, Eichmann TO, Koren Š, Brglez V, Jordan PM, Gerstmeier J, Lainšček D, Golob-Urbanc A, Jerala R, Lambeau G, Werz O, Zimmermann R, Petan T. Lipid droplets control mitogenic lipid mediator production in human cancer cells. Mol Metab 2023; 76:101791. [PMID: 37586657 PMCID: PMC10470291 DOI: 10.1016/j.molmet.2023.101791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 07/29/2023] [Accepted: 08/08/2023] [Indexed: 08/18/2023] Open
Abstract
OBJECTIVES Polyunsaturated fatty acids (PUFAs) are structural components of membrane phospholipids and precursors of oxygenated lipid mediators with diverse functions, including the control of cell growth, inflammation and tumourigenesis. However, the molecular pathways that control the availability of PUFAs for lipid mediator production are not well understood. Here, we investigated the crosstalk of three pathways in the provision of PUFAs for lipid mediator production: (i) secreted group X phospholipase A2 (GX sPLA2) and (ii) cytosolic group IVA PLA2 (cPLA2α), both mobilizing PUFAs from membrane phospholipids, and (iii) adipose triglyceride lipase (ATGL), which mediates the degradation of triacylglycerols (TAGs) stored in cytosolic lipid droplets (LDs). METHODS We combined lipidomic and functional analyses in cancer cell line models to dissect the trafficking of PUFAs between membrane phospholipids and LDs and determine the role of these pathways in lipid mediator production, cancer cell proliferation and tumour growth in vivo. RESULTS We demonstrate that lipid mediator production strongly depends on TAG turnover. GX sPLA2 directs ω-3 and ω-6 PUFAs from membrane phospholipids into TAG stores, whereas ATGL is required for their entry into lipid mediator biosynthetic pathways. ATGL controls the release of PUFAs from LD stores and their conversion into cyclooxygenase- and lipoxygenase-derived lipid mediators under conditions of nutrient sufficiency and during serum starvation. In starving cells, ATGL also promotes the incorporation of LD-derived PUFAs into phospholipids, representing substrates for cPLA2α. Furthermore, we demonstrate that the built-up of TAG stores by acyl-CoA:diacylglycerol acyltransferase 1 (DGAT1) is required for the production of mitogenic lipid signals that promote cancer cell proliferation and tumour growth. CONCLUSION This study shifts the paradigm of PLA2-driven lipid mediator signalling and identifies LDs as central lipid mediator production hubs. Targeting DGAT1-mediated LD biogenesis is a promising strategy to restrict lipid mediator production and tumour growth.
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Affiliation(s)
- Eva Jarc Jovičić
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Anja Pucer Janež
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Thomas O Eichmann
- Institute of Molecular Biosciences, University of Graz, Graz, Austria; Center for Explorative Lipidomics, BioTechMed-Graz, Graz, Austria
| | - Špela Koren
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Vesna Brglez
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Paul M Jordan
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Jena, Germany
| | - Jana Gerstmeier
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Jena, Germany
| | - Duško Lainšček
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Ljubljana, Slovenia; EN-FIST, Centre of Excellence, Ljubljana, Slovenia
| | - Anja Golob-Urbanc
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Ljubljana, Slovenia
| | - Roman Jerala
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Ljubljana, Slovenia; EN-FIST, Centre of Excellence, Ljubljana, Slovenia
| | - Gérard Lambeau
- Université Côte d'Azur (UCA), Centre National de la Recherche Scientifique (CNRS), Institut de Pharmacologie Moléculaire et Cellulaire (IPMC), UMR7275, Valbonne Sophia Antipolis, France
| | - Oliver Werz
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Jena, Germany
| | - Robert Zimmermann
- Institute of Molecular Biosciences, University of Graz, Graz, Austria; BioTechMed-Graz, University of Graz, Graz, Austria
| | - Toni Petan
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Ljubljana, Slovenia.
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7
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Shan L, Li X, Zheng X, Wu J, Ren H, Liu W, Wang P. Two Polarity-Sensitive Fluorescent Probes Based on Curcumin Analogs for Visualizing Polarity Changes in Lipid Droplets. Molecules 2023; 28:6626. [PMID: 37764402 PMCID: PMC10535065 DOI: 10.3390/molecules28186626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
As a class of highly dynamic organelles, lipid droplets (LDs) are involved in numerous physiological functions, and the changes in polarity of LDs are closely related to a variety of diseases. In this work, we developed two polarity-sensitive fluorescent probes (CC-CH and CC-Cl) based on curcumin analogs. CC-CH and CC-Cl with a donor-acceptor-donor (D-A-D) structure exhibited the property of intramolecular charge transfer (ICT); thus, their fluorescence emissions were significantly attenuated with increasing ambient polarity. Cell experiments indicated that CC-CH and CC-Cl showed excellent photostability, a low cytotoxicity, and a superior targeting ability regarding LDs. After treatment with oleic acid (OA) and methyl-β-cyclodextrin (M-β-CD), the polarity changes of LDs in living cells could be visualized by using CC-CH and CC-Cl. In addition, CC-CH and CC-Cl could monitor polarity changes of LDs in different pathological processes, including inflammatory responses, nutrient deprivation, and H2O2-induced oxidative stress. Therefore, CC-CH and CC-Cl are promising potential fluorescent probes for tracking intracellular LD polarity changes.
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Affiliation(s)
- Lin Shan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xuewei Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiuli Zheng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jiasheng Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Institute of Optical Physics and Engineering Technology, Qilu Zhongke, Jinan 250000, China
| | - Haohui Ren
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Institute of Optical Physics and Engineering Technology, Qilu Zhongke, Jinan 250000, China
| | - Weimin Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pengfei Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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8
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Safi R, Sánchez-Álvarez M, Bosch M, Demangel C, Parton RG, Pol A. Defensive-lipid droplets: Cellular organelles designed for antimicrobial immunity. Immunol Rev 2023; 317:113-136. [PMID: 36960679 DOI: 10.1111/imr.13199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
Abstract
Microbes have developed many strategies to subvert host organisms, which, in turn, evolved several innate immune responses. As major lipid storage organelles of eukaryotes, lipid droplets (LDs) are an attractive source of nutrients for invaders. Intracellular viruses, bacteria, and protozoan parasites induce and physically interact with LDs, and the current view is that they "hijack" LDs to draw on substrates for host colonization. This dogma has been challenged by the recent demonstration that LDs are endowed with a protein-mediated antibiotic activity, which is upregulated in response to danger signals and sepsis. Dependence on host nutrients could be a generic "Achilles' heel" of intracellular pathogens and LDs a suitable chokepoint harnessed by innate immunity to organize a front-line defense. Here, we will provide a brief overview of the state of the conflict and discuss potential mechanisms driving the formation of the 'defensive-LDs' functioning as hubs of innate immunity.
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Affiliation(s)
- Rémi Safi
- Lipid Trafficking and Disease Group, Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
- Josep Carreras Leukemia Research Institute, Barcelona, Spain
| | - Miguel Sánchez-Álvarez
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
- Instituto de Investigaciones Biomédicas Alberto Sols (IIB), Madrid, Spain
| | - Marta Bosch
- Lipid Trafficking and Disease Group, Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
- Department of Biomedical Sciences, Faculty of Medicine, Universitat de Barcelona, Barcelona, Spain
| | - Caroline Demangel
- Immunobiology and Therapy Unit, Institut Pasteur, Université Paris Cité, INSERM U1224, Paris, France
| | - Robert G Parton
- Institute for Molecular Bioscience (IMB), Brisbane, Queensland, Australia
- Centre for Microscopy and Microanalysis (CMM), University of Queensland, Brisbane, Queensland, Australia
| | - Albert Pol
- Lipid Trafficking and Disease Group, Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
- Department of Biomedical Sciences, Faculty of Medicine, Universitat de Barcelona, Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
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9
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Andrade LC, Majerowicz D, Oliveira PL, Guarneri AA. Alterations in energy metabolism of Rhodnius prolixus induced by Trypanosoma rangeli infection. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2023; 159:103987. [PMID: 37429385 DOI: 10.1016/j.ibmb.2023.103987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 07/07/2023] [Accepted: 07/07/2023] [Indexed: 07/12/2023]
Abstract
Trypanosoma rangeli is a protozoan parasite that infects triatomines and mammals in the Americas, producing mixed infections with Trypanosoma cruzi, the etiological agent of Chagas disease. The former parasite is not pathogenic to humans, but has different levels of pathogenicity, as well as causing physiological and behavioral alterations, to its invertebrate hosts. In this study, we measured locomotory activity, and the glyceride accumulation profile in the hemolymph and fat body, as well as the expression of key genes related to triglyceride metabolism, of Rhodnius prolixus nymphs infected with T. rangeli. We found that the locomotory activity of the insects was correlated with the amount of triglycerides in the fat body. Infected nymphs had increased activity when starved, and also had an accumulation of glycerides in the fat body and hemolymph. These alterations were also associated with a higher expression of the diacylglycerol acyltransferase, lipophorin and lipophorin receptor genes in the fat body. We infer that T. rangeli is able to alter the energetic processes of its invertebrate host, in order to increase the availability of lipids to the parasite, which, in turn modifies the activity levels of the insect. These alterations are discussed with regard to their potential to increase the transmission rate of the parasite.
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Affiliation(s)
- Laila C Andrade
- Vector Behavior and Pathogen Interaction Group, Instituto René Rachou, Fiocruz, Avenida Augusto de Lima, 1715, Belo Horizonte, MG, CEP 30190-009, Brazil
| | - David Majerowicz
- Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Prédio do CCS, bloco A, 2° andar, sala 48, CEP: 21941-590, Cidade Universitária, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Biociências, Universidade do Estado do Rio de Janeiro, Brazil; INCT-EM, Brazil
| | - Pedro L Oliveira
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho, 373, Ilha do Fundão, Rio de Janeiro, 21941-902, Brazil; INCT-EM, Brazil
| | - Alessandra A Guarneri
- Vector Behavior and Pathogen Interaction Group, Instituto René Rachou, Fiocruz, Avenida Augusto de Lima, 1715, Belo Horizonte, MG, CEP 30190-009, Brazil; INCT-EM, Brazil.
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10
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Herrera-Moro Huitron L, De Jesús-González LA, Martínez-Castillo M, Ulloa-Aguilar JM, Cabello-Gutierrez C, Helguera-Repetto C, Garcia-Cordero J, León Juárez M. Multifaceted Nature of Lipid Droplets in Viral Interactions and Pathogenesis. Microorganisms 2023; 11:1851. [PMID: 37513023 PMCID: PMC10386712 DOI: 10.3390/microorganisms11071851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/15/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
Once regarded as inert organelles with limited and ill-defined roles, lipid droplets (LDs) have emerged as dynamic entities with multifaceted functions within the cell. Recent research has illuminated their pivotal role as primary energy reservoirs in the form of lipids, capable of being metabolized to meet cellular energy demands. Their high dynamism is underscored by their ability to interact with numerous cellular organelles, notably the endoplasmic reticulum (the site of LD genesis) and mitochondria, which utilize small LDs for energy production. Beyond their contribution to cellular bioenergetics, LDs have been associated with viral infections. Evidence suggests that viruses can co-opt LDs to facilitate their infection cycle. Furthermore, recent discoveries highlight the role of LDs in modulating the host's immune response. Observations of altered LD levels during viral infections suggest their involvement in disease pathophysiology, potentially through production of proinflammatory mediators using LD lipids as precursors. This review explores these intriguing aspects of LDs, shedding light on their multifaceted nature and implications in viral interactions and disease development.
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Affiliation(s)
- Luis Herrera-Moro Huitron
- Laboratorio de Virología Perinatal y Diseño Molecular de Antígenos y Biomarcadores, Departamento de Inmunobioquímica, Instituto Nacional de Perinatología, Mexico City 11000, Mexico
| | | | - Macario Martínez-Castillo
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Mexico City 11340, Mexico
| | - José Manuel Ulloa-Aguilar
- Laboratorio de Virología Perinatal y Diseño Molecular de Antígenos y Biomarcadores, Departamento de Inmunobioquímica, Instituto Nacional de Perinatología, Mexico City 11000, Mexico
| | - Carlos Cabello-Gutierrez
- Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas (INER), Departamento de Investigación en Virología y Micología, Calzada de Tlalpan 4502, Belisario Domínguez, Tlalpan 14080, Mexico
| | - Cecilia Helguera-Repetto
- Laboratorio de Microbiología y Diagnóstico Molecular, Departamento de Inmunobioquímica, Instituto Nacional de Perinatología, Mexico City 11000, Mexico
| | - Julio Garcia-Cordero
- Departamento de Biomedicina Molecular, Cinvestav, Av. IPN# 2508, Mexico City 07360, Mexico
| | - Moisés León Juárez
- Laboratorio de Virología Perinatal y Diseño Molecular de Antígenos y Biomarcadores, Departamento de Inmunobioquímica, Instituto Nacional de Perinatología, Mexico City 11000, Mexico
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11
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Hammoudeh N, Soukkarieh C, Murphy DJ, Hanano A. Mammalian lipid droplets: structural, pathological, immunological and anti-toxicological roles. Prog Lipid Res 2023; 91:101233. [PMID: 37156444 DOI: 10.1016/j.plipres.2023.101233] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 04/30/2023] [Accepted: 05/05/2023] [Indexed: 05/10/2023]
Abstract
Mammalian lipid droplets (LDs) are specialized cytosolic organelles consisting of a neutral lipid core surrounded by a membrane made up of a phospholipid monolayer and a specific population of proteins that varies according to the location and function of each LD. Over the past decade, there have been significant advances in the understanding of LD biogenesis and functions. LDs are now recognized as dynamic organelles that participate in many aspects of cellular homeostasis plus other vital functions. LD biogenesis is a complex, highly-regulated process with assembly occurring on the endoplasmic reticulum although aspects of the underpinning molecular mechanisms remain elusive. For example, it is unclear how many enzymes participate in the biosynthesis of the neutral lipid components of LDs and how this process is coordinated in response to different metabolic cues to promote or suppress LD formation and turnover. In addition to enzymes involved in the biosynthesis of neutral lipids, various scaffolding proteins play roles in coordinating LD formation. Despite their lack of ultrastructural diversity, LDs in different mammalian cell types are involved in a wide range of biological functions. These include roles in membrane homeostasis, regulation of hypoxia, neoplastic inflammatory responses, cellular oxidative status, lipid peroxidation, and protection against potentially toxic intracellular fatty acids and lipophilic xenobiotics. Herein, the roles of mammalian LDs and their associated proteins are reviewed with a particular focus on their roles in pathological, immunological and anti-toxicological processes.
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Affiliation(s)
- Nour Hammoudeh
- Department of Animal Biology, Faculty of Sciences, University of Damascus, Damascus, Syria
| | - Chadi Soukkarieh
- Department of Animal Biology, Faculty of Sciences, University of Damascus, Damascus, Syria
| | - Denis J Murphy
- School of Applied Sciences, University of South Wales, Pontypridd, CF37 1DL, Wales, United Kingdom..
| | - Abdulsamie Hanano
- Department of Molecular Biology and Biotechnology, Atomic Energy Commission of Syria (AECS), P.O. Box 6091, Damascus, Syria..
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12
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Sinha S, Haque M, Lugova H, Kumar S. The Effect of Omega-3 Fatty Acids on Insulin Resistance. Life (Basel) 2023; 13:1322. [PMID: 37374105 PMCID: PMC10305526 DOI: 10.3390/life13061322] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/27/2023] [Accepted: 06/02/2023] [Indexed: 06/29/2023] Open
Abstract
Insulin resistance is a critical pathophysiological process in the onset and advancement of type 2 diabetes mellitus. It is well-recognized that alterations in the metabolism of lipids and aberrant fat buildup effectively trigger the development of resistance to insulin. Adjusting one's eating habits and managing weight appropriately are crucial for treating, controlling, and reducing the risk of T2DM because obesity and a lack of physical exercise are the primary factors responsible for the worldwide rise in T2DM. Omega-3 fatty acid is one of the polyunsaturated fatty acids (PUFA) that include long-chain omega-3 fatty acids such as eicosapentaenoic acid and docosahexaenoic acid, commonly found in fish oils. Omega-3 and omega-6 polyunsaturated fatty acids (PUFAs; 3 and 6 PUFAs) are essential for human health because they serve as metabolic precursors of eicosanoids, a class of signaling molecules that are essential for controlling a body's inflammation. Since humans are unable to produce any of the omega-3 or omega-6 PUFAs, they both constitute imperative nutritional ingredients. Long-standing concerns about long-chain omega-3 fatty acids' impact on diabetes management have been supported by experimental investigations that found significant increases in fasting glucose following omega-3 fatty acid supplementation and foods rich in PUFA and omega-3 fatty acid. Cellular explanations to explain the connection between inflammation and IR include mitochondrial dysfunction, endoplasmic reticulum (ER) stress, and oxidative stress. Modifications in the lipid composition of mitochondrial membranes and/or receptor-mediated signaling may be part of the mechanism behind the activation of mitochondrial fusion by fish oil/omega-3 PUFA. The exact molecular processes by which omega-3 PUFAs control mitochondrial activity to defend against IR are still unknown.
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Affiliation(s)
- Susmita Sinha
- Department of Physiology, Khulna City Medical College and Hospital, 33 KDA Avenue, Hotel Royal Crossing, Khulna Sadar, Khulna 9100, Bangladesh
| | - Mainul Haque
- The Unit of Pharmacology, Faculty of Medicine and Defence Health, Universiti Pertahanan Nasional Malaysia (National Defence University of Malaysia), Kem Perdana Sungai Besi, Kuala Lumpur 57000, Malaysia
- Department of Scientific Research Center (KSRC), Karnavati School of Dentistry, Karnavati University, Gandhinagar 382422, India
| | - Halyna Lugova
- Faculty of Medicine and Health Sciences, UCSI University Springhill (Seremban/PD) Campus, No. 2, Avenue 3, Persiaran Springhill, Port Dickson 71010, Malaysia
| | - Santosh Kumar
- Karnavati School of Dentistry, Karnavati University, A/907, Adalaj-Uvarsad Rd, Gandhinagar 382422, India
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13
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Zadoorian A, Du X, Yang H. Lipid droplet biogenesis and functions in health and disease. Nat Rev Endocrinol 2023:10.1038/s41574-023-00845-0. [PMID: 37221402 DOI: 10.1038/s41574-023-00845-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/25/2023] [Indexed: 05/25/2023]
Abstract
Ubiquitous yet unique, lipid droplets are intracellular organelles that are increasingly being recognized for their versatility beyond energy storage. Advances uncovering the intricacies of their biogenesis and the diversity of their physiological and pathological roles have yielded new insights into lipid droplet biology. Despite these insights, the mechanisms governing the biogenesis and functions of lipid droplets remain incompletely understood. Moreover, the causal relationship between the biogenesis and function of lipid droplets and human diseases is poorly resolved. Here, we provide an update on the current understanding of the biogenesis and functions of lipid droplets in health and disease, highlighting a key role for lipid droplet biogenesis in alleviating cellular stresses. We also discuss therapeutic strategies of targeting lipid droplet biogenesis, growth or degradation that could be applied in the future to common diseases, such as cancer, hepatic steatosis and viral infection.
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Affiliation(s)
- Armella Zadoorian
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, Australia
| | - Ximing Du
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, Australia
| | - Hongyuan Yang
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, Australia.
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14
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Kambarev S, Borghesan E, Miller CN, Myeni S, Celli J. The Brucella abortus Type IV Effector BspA Inhibits MARCH6-Dependent ERAD To Promote Intracellular Growth. Infect Immun 2023; 91:e0013023. [PMID: 37129527 PMCID: PMC10187129 DOI: 10.1128/iai.00130-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 04/10/2023] [Indexed: 05/03/2023] Open
Abstract
Brucella abortus, the intracellular causative agent of brucellosis, relies on type IV secretion system (T4SS) effector-mediated modulation of host cell functions to establish a replicative niche, the Brucella-containing vacuole (BCV). Brucella exploits the host's endocytic, secretory, and autophagic pathways to modulate the nature and function of its vacuole from an endocytic BCV (eBCV) to an endoplasmic reticulum (ER)-derived replicative BCV (rBCV) to an autophagic egress BCV (aBCV). A role for the host ER-associated degradation pathway (ERAD) in the B. abortus intracellular cycle was recently uncovered, as it is enhanced by the T4SS effector BspL to control the timing of aBCV-mediated egress. Here, we show that the T4SS effector BspA also interferes with ERAD, yet to promote B. abortus intracellular proliferation. BspA was required for B. abortus replication in bone marrow-derived macrophages and interacts with membrane-associated RING-CH-type finger 6 (MARCH6), a host E3 ubiquitin ligase involved in ERAD. Pharmacological inhibition of ERAD and small interfering RNA (siRNA) depletion of MARCH6 did not affect the replication of wild-type B. abortus but rescued the replication defect of a bspA deletion mutant, while depletion of the ERAD component UbxD8 affected replication of B. abortus and rescued the replication defect of the bspA mutant. BspA affected the degradation of ERAD substrates and destabilized the MARCH6 E3 ligase complex. Taken together, these findings indicate that BspA inhibits the host ERAD pathway via targeting of MARCH6 to promote B. abortus intracellular growth. Our data reveal that targeting ERAD components by type IV effectors emerges as a multifaceted theme in Brucella pathogenesis.
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Affiliation(s)
- Stanimir Kambarev
- Paul G. Allen School for Global Health, Washington State University, Pullman, Washington, USA
| | - Elizabeth Borghesan
- Paul G. Allen School for Global Health, Washington State University, Pullman, Washington, USA
| | - Cheryl N. Miller
- Paul G. Allen School for Global Health, Washington State University, Pullman, Washington, USA
| | - Sebenzile Myeni
- Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, USA
| | - Jean Celli
- Paul G. Allen School for Global Health, Washington State University, Pullman, Washington, USA
- Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, USA
- Department of Microbiology and Molecular Genetics, Larner College of Medicine at the University of Vermont, Burlington, Vermont, USA
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15
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Rosa IF, Peçanha APB, Carvalho TRB, Alexandre LS, Ferreira VG, Doretto LB, Souza BM, Nakajima RT, da Silva P, Barbosa AP, Gomes-de-Pontes L, Bomfim CG, Machado-Santelli GM, Condino-Neto A, Guzzo CR, Peron JPS, Andrade-Silva M, Câmara NOS, Garnique AMB, Medeiros RJ, Ferraris FK, Barcellos LJG, Correia-Junior JD, Galindo-Villegas J, Machado MFR, Castoldi A, Oliveira SL, Costa CC, Belo MAA, Galdino G, Sgro GG, Bueno NF, Eto SF, Veras FP, Fernandes BHV, Sanches PRS, Cilli EM, Malafaia G, Nóbrega RH, Garcez AS, Carrilho E, Charlie-Silva I. Photobiomodulation Reduces the Cytokine Storm Syndrome Associated with COVID-19 in the Zebrafish Model. Int J Mol Sci 2023; 24:ijms24076104. [PMID: 37047078 PMCID: PMC10094635 DOI: 10.3390/ijms24076104] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/11/2023] [Accepted: 03/14/2023] [Indexed: 04/14/2023] Open
Abstract
Although the exact mechanism of the pathogenesis of coronavirus SARS-CoV-2 (COVID-19) is not fully understood, oxidative stress and the release of pro-inflammatory cytokines have been highlighted as playing a vital role in the pathogenesis of the disease. In this sense, alternative treatments are needed to reduce the level of inflammation caused by COVID-19. Therefore, this study aimed to investigate the potential effect of red photobiomodulation (PBM) as an attractive therapy to downregulate the cytokine storm caused by COVID-19 in a zebrafish model. RT-qPCR analyses and protein-protein interaction prediction among SARS-CoV-2 and Danio rerio proteins showed that recombinant Spike protein (rSpike) was responsible for generating systemic inflammatory processes with significantly increased levels of pro-inflammatory (il1b, il6, tnfa, and nfkbiab), oxidative stress (romo1) and energy metabolism (slc2a1a and coa1) mRNA markers, with a pattern similar to those observed in COVID-19 cases in humans. On the other hand, PBM treatment was able to decrease the mRNA levels of these pro-inflammatory and oxidative stress markers compared with rSpike in various tissues, promoting an anti-inflammatory response. Conversely, PBM promotes cellular and tissue repair of injured tissues and significantly increases the survival rate of rSpike-inoculated individuals. Additionally, metabolomics analysis showed that the most-impacted metabolic pathways between PBM and the rSpike treated groups were related to steroid metabolism, immune system, and lipid metabolism. Together, our findings suggest that the inflammatory process is an incisive feature of COVID-19 and red PBM can be used as a novel therapeutic agent for COVID-19 by regulating the inflammatory response. Nevertheless, the need for more clinical trials remains, and there is a significant gap to overcome before clinical trials can commence.
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Affiliation(s)
- Ivana F Rosa
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 01049-010, Brazil
| | - Ana P B Peçanha
- Department of Orthodontics, São Leopoldo Mandic College, Campinas 13045-755, Brazil
| | - Tábata R B Carvalho
- Department of Orthodontics, São Leopoldo Mandic College, Campinas 13045-755, Brazil
| | - Leonardo S Alexandre
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos 13566-590, Brazil
- The National Institute of Science and Technology in Bioanalyses, INCTBio, Campinas 13083-970, Brazil
| | - Vinícius G Ferreira
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos 13566-590, Brazil
- The National Institute of Science and Technology in Bioanalyses, INCTBio, Campinas 13083-970, Brazil
| | - Lucas B Doretto
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 01049-010, Brazil
| | - Beatriz M Souza
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 01049-010, Brazil
| | - Rafael T Nakajima
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 01049-010, Brazil
| | - Patrick da Silva
- Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo 05508-220, Brazil
| | - Ana P Barbosa
- Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo 05508-220, Brazil
| | - Leticia Gomes-de-Pontes
- Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo 05508-220, Brazil
| | - Camila G Bomfim
- Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo 05508-220, Brazil
| | | | - Antonio Condino-Neto
- Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo 05508-220, Brazil
| | - Cristiane R Guzzo
- Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo 05508-220, Brazil
| | - Jean P S Peron
- Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo 05508-220, Brazil
| | - Magaiver Andrade-Silva
- Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo 05508-220, Brazil
| | - Niels O S Câmara
- Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo 05508-220, Brazil
| | - Anali M B Garnique
- Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo 05508-220, Brazil
| | | | | | - Leonardo J G Barcellos
- Laboratório de Fisiologia de Peixes, Programa de Pós-Graduação em Bioexperimentação, Escola de Ciências Agrárias, Inovação e Negócios, Universidade de Passo Fundo, Passo Fundo 99052-900, Brazil
| | - Jose D Correia-Junior
- Institute of Biomedical Sciences, Federal University Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Jorge Galindo-Villegas
- Department of Genomics, Faculty of Biosciences and Aquaculture, Nord University, 8026 Bodø, Norway
| | - Mônica F R Machado
- Biological Sciences Special Academic Unit, Federal University of Jatai, Jatai 75804-020, Brazil
| | - Angela Castoldi
- Keizo Asami Institute, Federal University of Pernambuco, Recife 50670-901, Brazil
| | - Susana L Oliveira
- School of Agricultural and Veterinary Sciences, São Paulo State University (UNESP), Jaboticabal 14884-900, Brazil
| | - Camila C Costa
- School of Agricultural and Veterinary Sciences, São Paulo State University (UNESP), Jaboticabal 14884-900, Brazil
| | - Marco A A Belo
- School of Agricultural and Veterinary Sciences, São Paulo State University (UNESP), Jaboticabal 14884-900, Brazil
| | - Giovane Galdino
- Institute of Motricity Sciences, Department of Physical Therapy, Federal University of Alfenas, Alfenas 37133-840, Brazil
| | - Germán G Sgro
- Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, São Paulo 14040-900, Brazil
| | - Natalia F Bueno
- Integrated Structural Biology Platform, Carlos Chagas Institute, FIOCRUZ Paraná, Curitiba 81310-020, Brazil
| | - Silas F Eto
- Center of Innovation and Development, Laboratory of Development and Innovation Butantan Institute, São Paulo 69310-000, Brazil
| | - Flávio P Veras
- Faculty of Medicine, University of São Paulo (USP), Ribeirão Preto 14040-900, Brazil
| | - Bianca H V Fernandes
- Laboratory of Genetic and Sanitary Control, Technical Board of Support for Teaching and Research, Faculty of Medicine, University of Sao Paulo, São Paulo 01246-903, Brazil
| | - Paulo R S Sanches
- Department of Biochemistry and Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara 14800-060, Brazil
| | - Eduardo M Cilli
- Department of Biochemistry and Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara 14800-060, Brazil
| | - Guilherme Malafaia
- Laboratory of Toxicology Applied to the Environment, Goiano Federal Institute, Urutaí Campus, Urutaí 75790-000, Brazil
| | - Rafael H Nóbrega
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 01049-010, Brazil
| | - Aguinaldo S Garcez
- Department of Orthodontics, São Leopoldo Mandic College, Campinas 13045-755, Brazil
| | - Emanuel Carrilho
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos 13566-590, Brazil
- The National Institute of Science and Technology in Bioanalyses, INCTBio, Campinas 13083-970, Brazil
| | - Ives Charlie-Silva
- Department of Biochemistry and Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara 14800-060, Brazil
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16
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Hung CH, Yen JB, Chang PJ, Chen LW, Huang TY, Tsai WJ, Tsai YC. Characterization of Human Norovirus Nonstructural Protein NS1.2 Involved in the Induction of the Filamentous Endoplasmic Reticulum, Enlarged Lipid Droplets, LC3 Recruitment, and Interaction with NTPase and NS4. Viruses 2023; 15:v15030812. [PMID: 36992520 PMCID: PMC10053803 DOI: 10.3390/v15030812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/09/2023] [Accepted: 03/20/2023] [Indexed: 03/31/2023] Open
Abstract
Human noroviruses (HuNVs) are the leading cause of gastroenteritis worldwide. NS1.2 is critical for HuNV pathogenesis, but the function is still unclear. The GII NS1.2 of HuNVs, unlike GI NS1.2, was localized to the endoplasmic reticulum (ER) and lipid droplets (LDs) and is accompanied by a distorted-filamentous ER morphology and aggregated-enlarged LDs. LC3 was recruited to the NS1.2-localized membrane through an autophagy-independent pathway. NS1.2, expressed from a cDNA clone of GII.4 norovirus, formed complexes with NTPase and NS4, which exhibited aggregated vesicle-like structures that were also colocalized with LC3 and LDs. NS1.2 is structurally divided into three domains from the N terminus: an inherently disordered region (IDR), a region that contains a putative hydrolase with the H-box/NC catalytic center (H-box/NC), and a C-terminal 251-330 a.a. region containing membrane-targeting domain. All three functional domains of NS1.2 were required for the induction of the filamentous ER. The IDR was essential for LC3 recruitment by NS1.2. Both the H-Box/NC and membrane-targeting domains are required for the induction of aggregated-enlarged LDs, NS1.2 self-assembly, and interaction with NTPase. The membrane-targeting domain was sufficient to interact with NS4. The study characterized the NS1.2 domain required for membrane targeting and protein-protein interactions, which are crucial for forming a viral replication complex.
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Affiliation(s)
- Chien-Hui Hung
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Internal Medicine, Division of Infectious Diseases, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan
| | - Ju-Bei Yen
- Department of Pediatrics, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan
| | - Pey-Jium Chang
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan 33302, Taiwan
| | - Lee-Wen Chen
- Department of Respiratory Care, Chung Gung University of Science and Technology, Chiayi 61363, Taiwan
| | - Tsung-Yu Huang
- Department of Internal Medicine, Division of Infectious Diseases, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan
| | - Wan-Ju Tsai
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan 33302, Taiwan
| | - Yu-Chin Tsai
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan 33302, Taiwan
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17
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Costa MFDS, Pereira-Dutra F, Deboosere N, Jouny S, Song OR, Iack G, Souza AL, Roma EH, Delorme V, Bozza PT, Brodin P. Mycobacterium tuberculosis induces delayed lipid droplet accumulation in dendritic cells depending on bacterial viability and virulence. Mol Microbiol 2023; 119:224-236. [PMID: 36579614 DOI: 10.1111/mmi.15023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/23/2022] [Accepted: 12/25/2022] [Indexed: 12/30/2022]
Abstract
Tuberculosis remains a global health threat with high morbidity. Dendritic cells (DCs) participate in the acute and chronic inflammatory responses to Mycobacterium tuberculosis (Mtb) by directing the adaptive immune response and are present in lung granulomas. In macrophages, the interaction of lipid droplets (LDs) with mycobacteria-containing phagosomes is central to host-pathogen interactions. However, the data available for DCs are still a matter of debate. Here, we reported that bone marrow-derived DCs (BMDCs) were susceptible to Mtb infection and replication at similar rate to macrophages. Unlike macrophages, the analysis of gene expression showed that Mtb infection induced a delayed increase in lipid droplet-related genes and proinflammatory response. Hence, LD accumulation has been observed by high-content imaging in late periods. Infection of BMDCs with killed H37Rv demonstrated that LD accumulation depends on Mtb viability. Moreover, infection with the attenuated strains H37Ra and Mycobacterium bovis-BCG induced only an early transient increase in LDs, whereas virulent Mtb also induced delayed LD accumulation. In addition, infection with the BCG strain with the reintroduced virulence RD1 locus induced higher LD accumulation and bacterial replication when compared to parental BCG. Collectively, our data suggest that delayed LD accumulation in DCs is dependent on mycobacterial viability and virulence.
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Affiliation(s)
- Maria Fernanda de Souza Costa
- Instituto de Biologia, Departamento de Imunobiologia, Universidade Federal Fluminense, Niteroi, Brazil.,Center for Technological Development in Health, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.,Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, Lille, France
| | - Filipe Pereira-Dutra
- Immunopharmacology Laboratory, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Nathalie Deboosere
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, Lille, France
| | - Samuel Jouny
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, Lille, France
| | - Ok-Ryul Song
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, Lille, France
| | - Guilherme Iack
- Instituto de Biologia, Departamento de Imunobiologia, Universidade Federal Fluminense, Niteroi, Brazil.,Immunopharmacology Laboratory, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Andreia Lamoglia Souza
- Fundação Oswaldo Cruz, Laboratory of Immunology and Immunogenetics in Infectious Diseases at Evandro Chagas National Institute of Infectious Diseases, Rio de Janeiro, Brazil
| | - Eric Henrique Roma
- Fundação Oswaldo Cruz, Laboratory of Immunology and Immunogenetics in Infectious Diseases at Evandro Chagas National Institute of Infectious Diseases, Rio de Janeiro, Brazil
| | - Vincent Delorme
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, Lille, France
| | - Patricia T Bozza
- Immunopharmacology Laboratory, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Priscille Brodin
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, Lille, France
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18
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Parthasarathy H, Tandel D, Siddiqui AH, Harshan KH. Metformin suppresses SARS-CoV-2 in cell culture. Virus Res 2023; 323:199010. [PMID: 36417940 PMCID: PMC9676078 DOI: 10.1016/j.virusres.2022.199010] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 11/10/2022] [Accepted: 11/19/2022] [Indexed: 11/21/2022]
Abstract
Comorbidities such as diabetes worsen COVID-19 severity and recovery. Metformin, a first-line medication for type 2 diabetes, has antiviral properties and certain studies have also indicated its prognostic potential in COVID-19. Here, we report that metformin significantly inhibits SARS-CoV-2 growth in cell culture models. First, a steady increase in AMPK phosphorylation was detected as infection progressed, suggesting its important role during viral infection. Activation of AMPK in Calu3 and Caco2 cell lines using metformin revealed that metformin suppresses SARS-CoV-2 infectious titers up to 99%, in both naïve as well as infected cells. IC50 values from dose-variation studies in infected cells were found to be 0.4 and 1.43 mM in Calu3 and Caco2 cells, respectively. Role of AMPK in metformin's antiviral suppression was further confirmed using other pharmacological compounds, AICAR and Compound C. Collectively, our study demonstrates that metformin is effective in limiting the replication of SARS-CoV-2 in cell culture and thus possibly could offer double benefits as diabetic COVID-19 patients by lowering both blood glucose levels and viral load.
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Affiliation(s)
| | - Dixit Tandel
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad 500007, India; Academy for Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | | | - Krishnan H Harshan
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad 500007, India; Academy for Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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19
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de Almeida PE, Pereira de Sousa NM, Rampinelli PG, Silva RVDS, Correa JR, D’Avila H. Lipid droplets as multifunctional organelles related to the mechanism of evasion during mycobacterial infection. Front Cell Infect Microbiol 2023; 13:1102643. [PMID: 36909724 PMCID: PMC9996354 DOI: 10.3389/fcimb.2023.1102643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 02/06/2023] [Indexed: 02/25/2023] Open
Abstract
Tuberculosis (TB) is an infectious disease caused by the bacteria of the Mycobaterium tuberculosis (Mtb) complex. The modulation of the lipid metabolism has been implicated in the immune response regulation, including the formation of lipid droplets (LD)s, LD-phagosome association and eicosanoid synthesis. Mtb, M. bovis BCG and other pathogenic mycobacteria, as well as wall components, such as LAM, can induce LDs formation in a mechanism involving surface receptors, for instance TLRs, CD36, CD14, CD11b/CD18 and others. In addition, the activation of the lipid-activated nuclear receptor PPARγ is involved in the mechanisms of LD biogenesis, as well as in the modulation of the synthesis of lipid mediators. In infected cells, LDs are sites of compartmentalized prostaglandin E2 synthesis involved in macrophage deactivation, bacterial replication and regulation of the host cytokine profile. LDs also have a function in vesicle traffic during infection. Rab7 and RILP, but not Rab5, are located on LDs of infected macrophages, suggesting that LDs and phagosomes could exchange essential proteins for phagosomal maturation, interfering in mycobacterial survival. The pharmacological inhibition of LDs biogenesis affects the bacterial replication and the synthesis of lipid mediators and cytokines, suggesting that LDs may be new targets for antimicrobial therapies. However, it is still controversial if the accumulation of LDs favors the mycobacterial survival acting as an escape mechanism, or promotes the host resistance to infection. Thus, in this mini-review we discuss recent advances in understanding the important role of LDs in the course of infections and the implications for the pathophysiology of mycobacteriosis.
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Affiliation(s)
- Patrícia Elaine de Almeida
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, Minas Gerais, Brazil
- *Correspondence: Heloisa D’Avila, ; Patrícia Elaine de Almeida, ; José Raimundo Correa,
| | - Núbia Maria Pereira de Sousa
- Laboratory of Microscopy and Microanalysis, Department of Cell Biology, University of Brasilia, Brasilia, DF, Brazil
| | - Pollianne Garbero Rampinelli
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, Minas Gerais, Brazil
| | - Renata Vieira de Sousa Silva
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, Minas Gerais, Brazil
| | - José Raimundo Correa
- Laboratory of Microscopy and Microanalysis, Department of Cell Biology, University of Brasilia, Brasilia, DF, Brazil
- *Correspondence: Heloisa D’Avila, ; Patrícia Elaine de Almeida, ; José Raimundo Correa,
| | - Heloisa D’Avila
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, Minas Gerais, Brazil
- *Correspondence: Heloisa D’Avila, ; Patrícia Elaine de Almeida, ; José Raimundo Correa,
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20
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Wan Z, Fu S, Wang Z, Xu Y, Zhou Y, Lin X, Lan R, Han X, Luo Z, Miao J. FABP4-mediated lipid droplet formation in Streptococcus uberis-infected macrophages supports host defence. Vet Res 2022; 53:90. [PMID: 36371263 PMCID: PMC9652580 DOI: 10.1186/s13567-022-01114-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 09/16/2022] [Indexed: 11/15/2022] Open
Abstract
Foamy macrophages containing prominent cytoplasmic lipid droplets (LDs) are found in a variety of infectious diseases. However, their role in Streptococcus uberis-induced mastitis is unknown. Herein, we report that S. uberis infection enhances the fatty acid synthesis pathway in macrophages, resulting in a sharp increase in LD levels, accompanied by a significantly enhanced inflammatory response. This process is mediated by the involvement of fatty acid binding protein 4 (FABP4), a subtype of the fatty acid-binding protein family that plays critical roles in metabolism and inflammation. In addition, FABP4 siRNA inhibitor cell models showed that the deposition of LDs decreased, and the mRNA expression of Tnf, Il1b and Il6 was significantly downregulated after gene silencing. As a result, the bacterial load in macrophages increased. Taken together, these data demonstrate that macrophage LD formation is a host-driven component of the immune response to S. uberis. FABP4 contributes to promoting inflammation via LDs, which should be considered a new target for drug development to treat infections.
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21
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Li K, Zhu J, Li K, Liang W, Zhang J, Zhang Q, Jiao X, Wang X, Wei X, Yang J. High-fat diet blunts T-cell responsiveness in Nile tilapia. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 135:104495. [PMID: 35863514 DOI: 10.1016/j.dci.2022.104495] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/26/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
The reduced stress resistance and increased disease risk associated with high-fat diet (HFD) in animals have attracted increasing attention. However, the effects of HFD on adaptive immunity in early vertebrates, especially non-tetrapods, remain unknown. In this study, using Nile tilapia (Oreochromis niloticus) as a model, we investigated the effects of HFD on the primordial T-cell response in fish. Tilapia fed with an HFD for 8 weeks showed impaired lymphocyte homeostasis in the spleen, as indicated by the decreased number of both T and B lymphocytes and increased transcription of proinflammatory cytokines interferon-γ and interleukin-6. Moreover, lymphocytes isolated from HFD-fed fish or cultured in lipid-supplemented medium exhibited diminished T-cell activation in response to CD3ε monoclonal antibody stimulation. Moreover, HFD-fed tilapia infected by Aeromonas hydrophila showed decreased T-cell expansion, increased T-cell apoptosis, reduced granzyme B expression, and impaired infection elimination. Additionally, HFD attenuated adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK) activity in tilapia lymphocytes, which in turn upregulated fatty acid synthesis but downregulated fatty acid β-oxidation. Altogether, our results suggest that HFD impairs lymphocyte homeostasis and T cell-mediated adaptive immune response in tilapia, which may be associated with the abnormal lipid metabolism in lymphocytes. These findings thus provide a novel perspective for understanding the impact of HFD on the adaptive immune response of early vertebrates.
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Affiliation(s)
- Kunming Li
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Jiahua Zhu
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Kang Li
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Wei Liang
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Jiansong Zhang
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Qian Zhang
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Xinying Jiao
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Xiaodan Wang
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Xiumei Wei
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai, 200241, China.
| | - Jialong Yang
- State Key Laboratory of Estuarine and Coastal Research, School of Life Sciences, East China Normal University, Shanghai, 200241, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China.
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22
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Clement CC, Osan J, Buque A, Nanaware PP, Chang YC, Perino G, Shetty M, Yamazaki T, Tsai WL, Urbanska AM, Calvo-Calle JM, Ramsamooj S, Ramsamooj S, Vergani D, Mieli-Vergani G, Terziroli Beretta-Piccoli B, Gadina M, Montagna C, Goncalves MD, Sallusto F, Galluzzi L, Soni RK, Stern LJ, Santambrogio L. PDIA3 epitope-driven immune autoreactivity contributes to hepatic damage in type 2 diabetes. Sci Immunol 2022; 7:eabl3795. [PMID: 35984892 DOI: 10.1126/sciimmunol.abl3795] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A diet rich in saturated fat and carbohydrates causes low-grade chronic inflammation in several organs, including the liver, ultimately driving nonalcoholic steatohepatitis. In this setting, environment-driven lipotoxicity and glucotoxicity induce liver damage, which promotes dendritic cell activation and generates a major histocompatibility complex class II (MHC-II) immunopeptidome enriched with peptides derived from proteins involved in cellular metabolism, oxidative phosphorylation, and the stress responses. Here, we demonstrated that lipotoxicity and glucotoxicity, as driven by a high-fat and high-fructose (HFHF) diet, promoted MHC-II presentation of nested T and B cell epitopes from protein disulfide isomerase family A member 3 (PDIA3), which is involved in immunogenic cell death. Increased MHC-II presentation of PDIA3 peptides was associated with antigen-specific proliferation of hepatic CD4+ immune infiltrates and isotype switch of anti-PDIA3 antibodies from IgM to IgG3, indicative of cellular and humoral PDIA3 autoreactivity. Passive transfer of PDIA3-specific T cells or PDIA3-specific antibodies also exacerbated hepatocyte death, as determined by increased hepatic transaminases detected in the sera of mice subjected to an HFHF but not control diet. Increased humoral responses to PDIA3 were also observed in patients with chronic inflammatory liver conditions, including autoimmune hepatitis, primary biliary cholangitis, and type 2 diabetes. Together, our data indicated that metabolic insults caused by an HFHF diet elicited liver damage and promoted pathogenic immune autoreactivity driven by T and B cell PDIA3 epitopes.
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Affiliation(s)
- Cristina C Clement
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Jaspreet Osan
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Aitziber Buque
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Padma P Nanaware
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Yoke-Chen Chang
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08901, USA
| | - Giorgio Perino
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Madhur Shetty
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Takahiro Yamazaki
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Wanxia Li Tsai
- Translational Immunology Section, National Institute of Arthritis Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 10916, USA
| | | | | | - Shakti Ramsamooj
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY 10065, USA.,Department of Pathology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Shakti Ramsamooj
- Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - Diego Vergani
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana and Epatocentro Ticino, Lugano 6900, Switzerland.,King's College London Faculty of Life Sciences and Medicine, King's College Hospital, London WC2R 2LS, UK
| | - Giorgina Mieli-Vergani
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana and Epatocentro Ticino, Lugano 6900, Switzerland.,King's College London Faculty of Life Sciences and Medicine, King's College Hospital, London WC2R 2LS, UK
| | - Benedetta Terziroli Beretta-Piccoli
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana and Epatocentro Ticino, Lugano 6900, Switzerland.,King's College London Faculty of Life Sciences and Medicine, King's College Hospital, London WC2R 2LS, UK
| | - Massimo Gadina
- Translational Immunology Section, National Institute of Arthritis Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 10916, USA
| | - Cristina Montagna
- Department of Radiation Oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08901, USA
| | | | - Federica Sallusto
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana and Epatocentro Ticino, Lugano 6900, Switzerland
| | - Lorenzo Galluzzi
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY 10065, USA.,Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY 10065, USA.,Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - Rajesh K Soni
- Proteomics and Macromolecular Crystallography Shared Resource, Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Lawrence J Stern
- Department of Pathology, University of Massachusetts Medical School, Worcester, MA 01605, USA.,Immunology and Microbiology Program, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Laura Santambrogio
- Department of Radiation Oncology, Weill Cornell Medicine, New York, NY 10065, USA.,Sandra and Edward Meyer Cancer Center, Weill Cornell Medicine, New York, NY 10065, USA.,Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY 10065, USA
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23
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Tang X, Song F, Zhao W, Zhang Z, Cao Y. Intratracheal instillation of graphene oxide decreases anti-virus responses and lipid contents via suppressing Toll-like receptor 3 in mouse livers. J Appl Toxicol 2022; 42:1822-1831. [PMID: 35727742 DOI: 10.1002/jat.4359] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/06/2022] [Accepted: 06/17/2022] [Indexed: 12/11/2022]
Abstract
Recent studies revealed a causal relationship between Toll-like receptors (TLRs) and lipid droplet biogenesis. Interestingly, it has been reported before that nanomaterials (NMs) were capable to modulate TLRs, but it remains unclear if NMs could affect lipid levels via TLR signaling pathways. In this study, we investigated the influences of airway exposure to graphene oxide (GO) on TLR3 signaling pathways and lipid levels in mouse livers. Intratracheal instillation of GO (0.1, 1, and 5 mg/kg, once a day, totally 5 days) induced inflammatory cell infiltrations as indicated by hematoxylin-eosin (H&E) staining and fibrosis as indicated by Masson staining in lungs, accompanying with decreased TLR3 proteins. Consistently, a TLR3-regulated anti-virus protein, namely interferon induced protein with tetratricopeptide repeats 1 (IFIT1), as well as two TLR3-regulated lipid proteins, namely radical S-adenosyl methionine domain containing 2 (RSAD2) and perilipin 2 (PLIN2), were decreased in lungs. The protein levels of interferon-β in serum were also decreased. In livers, GO exposure induced disorganization of liver cells but not fibrosis. In agreement with the trends observed in lungs, TLR3, IFIT1, RSAD2, and PLIN2 proteins were decreased in livers. As a possible consequence, GO exposure dose-dependently decreased lipid levels in livers as indicated by oil red O and BODIPY 493/503 staining. We concluded that airway exposure to GO decreased anti-virus responses and lipid levels in mouse livers via the suppression of TLR3.
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Affiliation(s)
- Xiaomin Tang
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, China
| | - Fengmei Song
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, China
| | - Weichao Zhao
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, China
| | - Zhaohui Zhang
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, China
| | - Yi Cao
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang, China
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24
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Down-Regulating the High Level of 17-Beta-Hydroxysteroid Dehydrogenase 13 Plays a Therapeutic Role for Non-Alcoholic Fatty Liver Disease. Int J Mol Sci 2022; 23:ijms23105544. [PMID: 35628360 PMCID: PMC9146021 DOI: 10.3390/ijms23105544] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 04/27/2022] [Accepted: 05/13/2022] [Indexed: 02/01/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most common chronic liver disease worldwide, and there is no specific drug to treat it. Recent results showed that 17-beta-hydroxysteroid dehydrogenase type 13 (HSD17B13) is associated with liver diseases, but these conclusions are controversial. Here, we showed that HSD17B13 was more highly expressed in the livers of NAFLD patients, and high expression was induced in the livers of murine NAFLD models and cultural hepatocytes treated using various etiologies. The high HSD17B13 expression in the hepatocytes facilitated the progression of NAFLD by directly stabilizing the intracellular lipid drops and by indirectly activating hepatic stellate cells. When HSD17B13 was overexpressed in the liver, it aggravated liver steatosis and fibrosis in mice fed with a high-fat diet, while down-regulated the high expression of HSD17B13 by short hairpin RNAs produced a therapeutic effect in the NAFLD mice. We concluded that high HSD17B13 expression is a good target for the development of drugs to treat NAFLD.
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Yin X, Zhuang X, Liao M, Huang L, Cui Q, Liu C, Dong W, Wang F, Liu Y, Wang W. Transcriptome analysis of Pacific white shrimp (Litopenaeus vannamei) hepatopancreas challenged by Vibrio alginolyticus reveals lipid metabolic disturbance. FISH & SHELLFISH IMMUNOLOGY 2022; 123:238-247. [PMID: 35278640 DOI: 10.1016/j.fsi.2022.03.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 03/01/2022] [Accepted: 03/03/2022] [Indexed: 06/14/2023]
Abstract
Vibrio alginolyticus is a devastating bacterial pathogen of Pacific white shrimp (Litopenaeus vannamei), which often causes acute hepatopancreatic necrosis syndrome (AHPNS) and early mortality syndrome (EMS). Elucidation of molecular mechanisms of L. vannamei in responding to infection is essential for controlling the epidemic. In the present study, transcriptomic profiles of L. vannamei hepatopancreas were explored by injecting with PBS or V. alginolyticus. Hepatopancreas morphology of L. vannamei was also assessed. The result reveals that compared with the hepatopancreas of PBS group, the storage cells (R-cell), secretory cells (B-cell) and star-shaped polygonal structures of the lumen were disappeared and necrotic after challenged by V. alginolyticus at 24 h. Transcriptome data showed that a total of 314 differential expression genes were induced by V. alginolyticus, with 133 and 181 genes up- and down-regulated, respectively. These genes were mainly associated with lysosome pathway, glycerophospholipid metabolism, drug metabolism-other enzymes, cysteine and methionine metabolism, aminoacyl-tRNA biosynthesis and PPAR signal pathway. Among these pathways, the lysosome pathway, glycerophospholipid metabolism and PPAR signal pathway were both related with lipid metabolism. Therefore, we detected the lipid accumulation in hepatopancreas by Oil Red O staining, TG and CHOL detection and the relative mRNA expression of several lipid metabolism related genes in the hepatopancreas of shrimp after challenge to V. alginolyticus. The present data reveals that lipids from the L. vannamei are nutrient sources for the V. alginolyticus and define the fate of the infection by modulating lipid homeostasis. These findings may have important implication for understanding the L. vannamei and V. alginolyticus interactions, and provide a substantial dataset for further research and may deliver the basis for preventing the bacterial diseases.
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Affiliation(s)
- Xiaoli Yin
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, College of Life Science, South China Normal University, Guangzhou, 510631, PR China
| | - Xueqi Zhuang
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, College of Life Science, South China Normal University, Guangzhou, 510631, PR China
| | - Meiqiu Liao
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, College of Life Science, South China Normal University, Guangzhou, 510631, PR China
| | - Lin Huang
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, College of Life Science, South China Normal University, Guangzhou, 510631, PR China
| | - Qiqian Cui
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, College of Life Science, South China Normal University, Guangzhou, 510631, PR China
| | - Can Liu
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, College of Life Science, South China Normal University, Guangzhou, 510631, PR China
| | - Wenna Dong
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, College of Life Science, South China Normal University, Guangzhou, 510631, PR China
| | - Feifei Wang
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, College of Life Science, South China Normal University, Guangzhou, 510631, PR China
| | - Yuan Liu
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, College of Life Science, South China Normal University, Guangzhou, 510631, PR China
| | - Weina Wang
- Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education, College of Life Science, South China Normal University, Guangzhou, 510631, PR China.
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26
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Mejhert N, Gabriel KR, Frendo-Cumbo S, Krahmer N, Song J, Kuruvilla L, Chitraju C, Boland S, Jang DK, von Grotthuss M, Costanzo MC, Rydén M, Olzmann JA, Flannick J, Burtt NP, Farese RV, Walther TC. The Lipid Droplet Knowledge Portal: A resource for systematic analyses of lipid droplet biology. Dev Cell 2022; 57:387-397.e4. [PMID: 35134345 PMCID: PMC9129885 DOI: 10.1016/j.devcel.2022.01.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 11/16/2021] [Accepted: 12/31/2021] [Indexed: 12/15/2022]
Abstract
Lipid droplets (LDs) are organelles of cellular lipid storage with fundamental roles in energy metabolism and cell membrane homeostasis. There has been an explosion of research into the biology of LDs, in part due to their relevance in diseases of lipid storage, such as atherosclerosis, obesity, type 2 diabetes, and hepatic steatosis. Consequently, there is an increasing need for a resource that combines datasets from systematic analyses of LD biology. Here, we integrate high-confidence, systematically generated human, mouse, and fly data from studies on LDs in the framework of an online platform named the "Lipid Droplet Knowledge Portal" (https://lipiddroplet.org/). This scalable and interactive portal includes comprehensive datasets, across a variety of cell types, for LD biology, including transcriptional profiles of induced lipid storage, organellar proteomics, genome-wide screen phenotypes, and ties to human genetics. This resource is a powerful platform that can be utilized to identify determinants of lipid storage.
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Affiliation(s)
- Niklas Mejhert
- Department of Molecular Metabolism, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Department of Medicine (H7), Karolinska Institutet, Huddinge, 141 86 Stockholm, Sweden
| | - Katlyn R Gabriel
- Department of Molecular Metabolism, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Howard Hughes Medical Institute, Boston, MA 02115, USA
| | - Scott Frendo-Cumbo
- Department of Medicine (H7), Karolinska Institutet, Huddinge, 141 86 Stockholm, Sweden
| | - Natalie Krahmer
- Institute for Diabetes and Obesity, Helmholtz Zentrum München, 85764 Neuherberg, Germany; German Center for Diabetes Research, Neuherberg, Germany
| | - Jiunn Song
- Department of Molecular Metabolism, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Leena Kuruvilla
- Primary Pharmacology Group, Discovery Sciences, Pfizer Inc., Groton, CT 06340, USA
| | - Chandramohan Chitraju
- Department of Molecular Metabolism, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Sebastian Boland
- Department of Molecular Metabolism, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Dong-Keun Jang
- Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA
| | - Marcin von Grotthuss
- Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA
| | - Maria C Costanzo
- Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA
| | - Mikael Rydén
- Department of Medicine (H7), Karolinska Institutet, Huddinge, 141 86 Stockholm, Sweden
| | - James A Olzmann
- Department of Molecular and Cell Biology, University of California Berkeley, Berkeley, CA 94720, USA; Department of Nutritional Sciences and Toxicology, University of California Berkeley, Berkeley, CA 94720, USA; Miller Institute for Basic Research in Science, University of California Berkeley, Berkeley, CA 94720, USA; Chan Zuckerberg Biohub, San Francisco, CA 94158, USA
| | - Jason Flannick
- Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA; Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Noël P Burtt
- Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA
| | - Robert V Farese
- Department of Molecular Metabolism, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Center on the Causes and Prevention of Cardiovascular Disease (CAP-CVD), Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA.
| | - Tobias C Walther
- Department of Molecular Metabolism, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Howard Hughes Medical Institute, Boston, MA 02115, USA; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Center on the Causes and Prevention of Cardiovascular Disease (CAP-CVD), Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA.
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27
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Lisco G, Giagulli VA, De Pergola G, Guastamacchia E, Jirillo E, Triggiani V. The Pathogenic Role of Foam Cells in Atherogenesis: Do They Represent Novel Therapeutic Targets? Endocr Metab Immune Disord Drug Targets 2022; 22:765-777. [PMID: 34994321 DOI: 10.2174/1871530322666220107114313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 12/09/2021] [Accepted: 12/15/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Foam cells, mainly derived from monocytes-macrophages, contain lipid droplets essentially composed of cholesterol in their cytoplasm. They infiltrate the intima of arteries, contributing to the formation of atherosclerotic plaques. PATHOGENESIS Foam cells damage the arterial cell wall via the release of proinflammatory cytokines, free radicals, and matrix metalloproteinases, enhancing the plaque size up to its rupture. THERAPY A correct dietary regimen seems to be the most appropriate therapeutic approach to minimize obesity, which is associated with the formation of foam cells. At the same time, different types of antioxidants have been evaluated to arrest the formation of foam cells, even if the results are still contradictory. In any case, a combination of antioxidants seems to be more efficient in the prevention of atherosclerosis.
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Affiliation(s)
- Giuseppe Lisco
- Interdisciplinary Department of Medicine-Section of Internal Medicine, Geriatrics, Endocrinology and Rare Diseases. University of Bari "Aldo Moro", School of Medicine, Policlinico, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | - Vito Angelo Giagulli
- Interdisciplinary Department of Medicine-Section of Internal Medicine, Geriatrics, Endocrinology and Rare Diseases. University of Bari "Aldo Moro", School of Medicine, Policlinico, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | - Giovanni De Pergola
- Unit of Geriatrics and Internal Medicine, National Institute of Gastroenterology "Saverio de Bellis", Research Hospital, Castellana Grotte, Bari, Italy
| | - Edoardo Guastamacchia
- Interdisciplinary Department of Medicine-Section of Internal Medicine, Geriatrics, Endocrinology and Rare Diseases. University of Bari "Aldo Moro", School of Medicine, Policlinico, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | - Emilio Jirillo
- Department of Basic Medical Science, Neuroscience and Sensory Organs, University of Bari Aldo Moro, Bari, Italy
| | - Vincenzo Triggiani
- Interdisciplinary Department of Medicine-Section of Internal Medicine, Geriatrics, Endocrinology and Rare Diseases. University of Bari "Aldo Moro", School of Medicine, Policlinico, Piazza Giulio Cesare 11, 70124 Bari, Italy
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28
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Lipid Droplets, Phospholipase A 2, Arachidonic Acid, and Atherosclerosis. Biomedicines 2021; 9:biomedicines9121891. [PMID: 34944707 PMCID: PMC8699036 DOI: 10.3390/biomedicines9121891] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/01/2021] [Accepted: 12/10/2021] [Indexed: 02/07/2023] Open
Abstract
Lipid droplets, classically regarded as static storage organelles, are currently considered as dynamic structures involved in key processes of lipid metabolism, cellular homeostasis and signaling. Studies on the inflammatory state of atherosclerotic plaques suggest that circulating monocytes interact with products released by endothelial cells and may acquire a foamy phenotype before crossing the endothelial barrier and differentiating into macrophages. One such compound released in significant amounts into the bloodstream is arachidonic acid, the common precursor of eicosanoids, and a potent inducer of neutral lipid synthesis and lipid droplet formation in circulating monocytes. Members of the family of phospholipase A2, which hydrolyze the fatty acid present at the sn-2 position of phospholipids, have recently emerged as key controllers of lipid droplet homeostasis, regulating their formation and the availability of fatty acids for lipid mediator production. In this paper we discuss recent findings related to lipid droplet dynamics in immune cells and the ways these organelles are involved in regulating arachidonic acid availability and metabolism in the context of atherosclerosis.
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29
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Kiarely Souza E, Pereira-Dutra FS, Rajão MA, Ferraro-Moreira F, Goltara-Gomes TC, Cunha-Fernandes T, Santos JDC, Prestes EB, Andrade WA, Zamboni DS, Bozza MT, Bozza PT. Lipid droplet accumulation occurs early following Salmonella infection and contributes to intracellular bacterial survival and replication. Mol Microbiol 2021; 117:293-306. [PMID: 34783412 DOI: 10.1111/mmi.14844] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 11/11/2021] [Indexed: 01/20/2023]
Abstract
Salmonellosis is a public health problem caused by Salmonella sp., a highly adapted facultative intracellular pathogen. After internalization, Salmonella sp. Manipulates several host processes, mainly through the activation of the type III secretion system (T3SS), including modification of host lipid metabolism and lipid droplet (LD) accumulation. LDs are dynamic and complex lipid-rich organelles involved in several cellular processes. The present study investigated the mechanism involved in LD biogenesis in Salmonella-infected macrophages and its role in bacterial pathogenicity. Here, we reported that S. Typhimurium induced a rapid time-dependent increase of LD formation in macrophages. The LD biogenesis was demonstrated to depend on Salmonella's viability and SPI1-related T3SS activity, with the participation of Toll-Like Receptor (TLR) signaling. We also observed that LD accumulation occurs through TLR2-dependent signaling and is counter-regulated by TLR4. Last, the pharmacologic modulation of LD formation by inhibiting diacylglycerol O-acyltransferase 1 (DGAT1) and cytosolic phospholipase A2 (cPLA2) significantly reduced the intracellular bacterial proliferation and impaired the prostaglandin E2 (PGE2 ) synthesis. Collectively, our data suggest the role of LDs on S. typhimurium intracellular survival and replication in macrophages. This data set provides new perspectives for future investigations about LDs in host-pathogen interaction.
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Affiliation(s)
- Ellen Kiarely Souza
- Laboratory of Immunopharmacology, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil.,Program of Immunology and Inflammation, Federal University of Rio de Janeiro, UFRJ, Rio de Janeiro, Brazil
| | - Filipe S Pereira-Dutra
- Laboratory of Immunopharmacology, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - Matheus A Rajão
- Program of Immunology and Tumor Biology, Instituto Nacional do Câncer, INCA, Rio de Janeiro, Brazil
| | - Felipe Ferraro-Moreira
- Laboratory of Immunopharmacology, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - Taynná C Goltara-Gomes
- Laboratory of Immunopharmacology, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - Tamires Cunha-Fernandes
- Laboratory of Immunopharmacology, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - Julia da Cunha Santos
- Laboratory of Immunopharmacology, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
| | - Elisa B Prestes
- Laboratory of Inflammation and Immunity, Department of Immunity, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, UFRJ, Rio de Janeiro, Brazil
| | - Warrison A Andrade
- Department of Cellular and Molecular Biology and Pathogenic Bioagents, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil
| | - Dario S Zamboni
- Department of Cellular and Molecular Biology and Pathogenic Bioagents, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil
| | - Marcelo T Bozza
- Laboratory of Inflammation and Immunity, Department of Immunity, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, UFRJ, Rio de Janeiro, Brazil
| | - Patrícia T Bozza
- Laboratory of Immunopharmacology, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
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30
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Hello from the other side: Membrane contact of lipid droplets with other organelles and subsequent functional implications. Prog Lipid Res 2021; 85:101141. [PMID: 34793861 DOI: 10.1016/j.plipres.2021.101141] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/10/2021] [Accepted: 11/10/2021] [Indexed: 02/06/2023]
Abstract
Lipid droplets (LDs) are ubiquitous organelles that play crucial roles in response to physiological and environmental cues. The identification of several neutral lipid synthesizing and regulatory protein complexes have propelled significant advance on the mechanisms of LD biogenesis in the endoplasmic reticulum (ER). Increasing evidence suggests that distinct proteins and regulatory factors, which localize to membrane contact sites (MCS), are involved not only in interorganellar lipid exchange and transport, but also function in other important cellular processes, including autophagy, mitochondrial dynamics and inheritance, ion signaling and inter-regulation of these MCS. More and more tethers and molecular determinants are associated to MCS and to a diversity of cellular and pathophysiological processes, demonstrating the dynamics and importance of these junctions in health and disease. The conjugation of lipids with proteins in supramolecular complexes is known to be paramount for many biological processes, namely membrane biosynthesis, cell homeostasis, regulation of organelle division and biogenesis, and cell growth. Ultimately, this physical organization allows the contact sites to function as crucial metabolic hubs that control the occurrence of chemical reactions. This leads to biochemical and metabolite compartmentalization for the purposes of energetic efficiency and cellular homeostasis. In this review, we will focus on the structural and functional aspects of LD-organelle interactions and how they ensure signaling exchange and metabolites transfer between organelles.
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31
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Cheng F, Liang J, Yang L, Lan G, Wang L, Wang L. Systematic Identification and Comparison of the Expressed Profiles of lncRNAs, miRNAs, circRNAs, and mRNAs with Associated Co-Expression Networks in Pigs with Low and High Intramuscular Fat. Animals (Basel) 2021; 11:ani11113212. [PMID: 34827944 PMCID: PMC8614448 DOI: 10.3390/ani11113212] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 11/03/2021] [Accepted: 11/04/2021] [Indexed: 12/13/2022] Open
Abstract
Intramuscular fat (IMF) content is a complex trait that affects meat quality and determines pork quality. In order to explore the potential mechanisms that affect the intramuscular fat content of pigs, a Large white × Min pigs F2 resource populations were constructed, then whole-transcriptome profile analysis was carried out for five low-IMF and five high-IMF F2 individuals. In total, 218 messenger RNA (mRNAs), 213 long non-coding RNAs (lncRNAs), 18 microRNAs (miRNAs), and 59 circular RNAs (circRNAs) were found to be differentially expressed in the longissimus dorsi muscle. Gene ontology analysis and Kyoto Encyclopedia of Genes and Genomes annotations revealed that these differentially expressed (DE) genes or potential target genes (PTGs) of DE regulatory RNAs (lncRNAs, miRNAs, and circRNAs) are mainly involved in cell differentiation, fatty acid synthesis, system development, muscle fiber development, and regulating lipid metabolism. In total, 274 PTGs were found to be differentially expressed between low- and high-IMF pigs, which indicated that some DE regulatory RNAs may contribute to the deposition/metabolism of IMF by regulating their PTGs. In addition, we analyzed the quantitative trait loci (QTLs) of DE RNAs co-located in high- and low-IMF groups. A total of 97 DE regulatory RNAs could be found located in the QTLs related to IMF. Co-expression networks among different types of RNA and competing endogenous RNA (ceRNA) regulatory networks were also constructed, and some genes involved in type I diabetes mellitus were found to play an important role in the complex molecular process of intramuscular fat deposition. This study identified and analyzed some differential RNAs, regulatory RNAs, and PTGs related to IMF, and provided new insights into the study of IMF formation at the level of the genome-wide landscape.
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Affiliation(s)
- Feng Cheng
- Key Laboratory of Farm Animal Genetic Resources and Germplasm Innovation of Ministry of Agriculture of China, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (F.C.); (L.Y.)
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China; (J.L.); (G.L.)
| | - Jing Liang
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China; (J.L.); (G.L.)
| | - Liyu Yang
- Key Laboratory of Farm Animal Genetic Resources and Germplasm Innovation of Ministry of Agriculture of China, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (F.C.); (L.Y.)
| | - Ganqiu Lan
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China; (J.L.); (G.L.)
| | - Lixian Wang
- Key Laboratory of Farm Animal Genetic Resources and Germplasm Innovation of Ministry of Agriculture of China, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (F.C.); (L.Y.)
- Correspondence: (L.W.); (L.W.)
| | - Ligang Wang
- Key Laboratory of Farm Animal Genetic Resources and Germplasm Innovation of Ministry of Agriculture of China, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (F.C.); (L.Y.)
- Correspondence: (L.W.); (L.W.)
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32
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Ajjaji D, Ben M'barek K, Boson B, Omrane M, Gassama-Diagne A, Blaud M, Penin F, Diaz E, Ducos B, Cosset FL, Thiam AR. Hepatitis C virus core protein uses triacylglycerols to fold onto the endoplasmic reticulum membrane. Traffic 2021; 23:63-80. [PMID: 34729868 DOI: 10.1111/tra.12825] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 10/16/2021] [Accepted: 11/01/2021] [Indexed: 12/12/2022]
Abstract
Lipid droplets (LDs) are involved in viral infections, but exactly how remains unclear. Here, we study the hepatitis C virus (HCV) whose core capsid protein binds to LDs but is also involved in the assembly of virions at the endoplasmic reticulum (ER) bilayer. We found that the amphipathic helix-containing domain of core, D2, senses triglycerides (TGs) rather than LDs per se. In the absence of LDs, D2 can bind to the ER membrane but only if TG molecules are present in the bilayer. Accordingly, the pharmacological inhibition of the diacylglycerol O-acyltransferase enzymes, mediating TG synthesis in the ER, inhibits D2 association with the bilayer. We found that TG molecules enable D2 to fold into alpha helices. Sequence analysis reveals that D2 resembles the apoE lipid-binding region. Our data support that TG in LDs promotes the folding of core, which subsequently relocalizes to contiguous ER regions. During this motion, core may carry TG molecules to these regions where HCV lipoviroparticles likely assemble. Consistent with this model, the inhibition of Arf1/COPI, which decreases LD surface accessibility to proteins and ER-LD material exchange, severely impedes the assembly of virions. Altogether, our data uncover a critical function of TG in the folding of core and HCV replication and reveals, more broadly, how TG accumulation in the ER may provoke the binding of soluble amphipathic helix-containing proteins to the ER bilayer.
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Affiliation(s)
- Dalila Ajjaji
- Laboratoire de Physique de l'École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, 24 rue Lhomond, Paris, 75005, France
| | - Kalthoum Ben M'barek
- Laboratoire de Physique de l'École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, 24 rue Lhomond, Paris, 75005, France
| | - Bertrand Boson
- CIRI-Centre International de Recherche en Infectiologie, Univ Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS Lyon, Lyon, France
| | - Mohyeddine Omrane
- Laboratoire de Physique de l'École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, 24 rue Lhomond, Paris, 75005, France
| | - Ama Gassama-Diagne
- INSERM, Unité 1193, Villejuif, France.,Université Paris-Sud, UMR-S 1193, Villejuif, France
| | - Magali Blaud
- Université de Paris, CiTCoM, CNRS, Paris, France
| | - François Penin
- Institut de Biologie et Chimie des Protéines, Bases Moléculaires et Structurales des Systèmes Infectieux, UMR 5086, CNRS, Labex Ecofect, University of Lyon, Lyon, France
| | - Elise Diaz
- High Throughput qPCR Core Facility of the ENS, IBENS, PSL Research University, Paris, France
| | - Bertrand Ducos
- Laboratoire de Physique de l'École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, 24 rue Lhomond, Paris, 75005, France.,High Throughput qPCR Core Facility of the ENS, IBENS, PSL Research University, Paris, France
| | - François-Loïc Cosset
- CIRI-Centre International de Recherche en Infectiologie, Univ Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS Lyon, Lyon, France
| | - Abdou Rachid Thiam
- Laboratoire de Physique de l'École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris, 24 rue Lhomond, Paris, 75005, France
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Wang L, Lin J, Yu J, Yang K, Sun L, Tang H, Pan L. Downregulation of Perilipin1 by the Immune Deficiency Pathway Leads to Lipid Droplet Reconfiguration and Adaptation to Bacterial Infection in Drosophila. THE JOURNAL OF IMMUNOLOGY 2021; 207:2347-2358. [PMID: 34588219 DOI: 10.4049/jimmunol.2100343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 08/26/2021] [Indexed: 11/19/2022]
Abstract
Lipid droplets (LDs), the highly dynamic intracellular organelles, are critical for lipid metabolism. Dynamic alterations in the configurations and functions of LDs during innate immune responses to bacterial infections and the underlying mechanisms, however, remain largely unknown. In this study, we trace the time-course morphology of LDs in fat bodies of Drosophila after transient bacterial infection. Detailed analysis shows that perilipin1 (plin1), a core gene involved in the regulation of LDs, is suppressed by the immune deficiency signaling, one major innate immune pathway in Drosophila During immune activation, downregulated plin1 promotes the enlargement of LDs, which in turn alleviates immune reaction-associated reactive oxygen species stress. Thus, the growth of LDs is likely an active adaptation to maintain redox homeostasis in response to immune deficiency activation. Therefore, our study provides evidence that plin1 serves as a modulator on LDs' reconfiguration in regulating infection-induced pathogenesis, and plin1 might be a potential therapeutic target for coordinating inflammation resolution and lipid metabolism.
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Affiliation(s)
- Lei Wang
- Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei, China.,The Center for Microbes, Development, and Health, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Jiaxin Lin
- The Center for Microbes, Development, and Health, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China.,Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Junjing Yu
- Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China; and
| | - Kaiyan Yang
- The Center for Microbes, Development, and Health, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China.,Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Li Sun
- The Center for Microbes, Development, and Health, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China.,Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Hong Tang
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China;
| | - Lei Pan
- The Center for Microbes, Development, and Health, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China; .,University of Chinese Academy of Sciences, Beijing, China.,Chinese Academy of Sciences Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, China
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Pereira-Dutra FS, Bozza PT. Lipid droplets diversity and functions in inflammation and immune response. Expert Rev Proteomics 2021; 18:809-825. [PMID: 34668810 DOI: 10.1080/14789450.2021.1995356] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Lipid droplets (LDs) are dynamic and evolutionary conserved lipid-enriched organelles composed of a core of neutral lipids surrounded by a monolayer of phospholipids associated with a diverse array of proteins that are cell- and stimulus-regulated. Far beyond being simply a deposit of neutral lipids, accumulating evidence demonstrate that LDs act as spatial and temporal local for lipid and protein compartmentalization and signaling organization. AREAS COVERED This review focuses on the progress in our understanding of LD protein diversity and LD functions in the context of cell signaling and immune responses, highlighting the relationship between LD composition with the multiple roles of this organelle in immunometabolism, inflammation and host-response to infection. EXPERT OPINION LDs are essential platforms for various cellular processes, including metabolic regulation, cell signaling, and immune responses. The functions of LD in infection and inflammatory disease are associated with the dynamic and complexity of their proteome. Our contemporary view place LDs as critical regulators of different inflammatory and infectious diseases and key markers of leukocyte activation.
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Affiliation(s)
- Filipe S Pereira-Dutra
- 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
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de Lira MN, Bolini L, Amorim NRT, Silva-Souza HA, Diaz BL, Canetti C, Persechini PM, Bandeira-Melo C. Acute catabolism of leukocyte lipid bodies: Characterization of a nordihydroguaiaretic acid (NDGA)-induced proteasomal-dependent model. Prostaglandins Leukot Essent Fatty Acids 2021; 171:102320. [PMID: 34303171 DOI: 10.1016/j.plefa.2021.102320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/03/2021] [Accepted: 07/07/2021] [Indexed: 10/20/2022]
Abstract
Cytoplasmic availability of leukocyte lipid bodies is controlled by a highly regulated cycle of opposing biogenesis- and catabolism-related events. While leukocyte biogenic machinery is well-characterized, lipid body catabolic mechanisms are yet mostly unknown. Here, we demonstrated that nordihydroguaiaretic acid (NDGA) very rapidly decreases the numbers of pre-formed lipid bodies within lipid body-enriched cytoplasm of mouse leukocytes - macrophages, neutrophils and eosinophils. NDGA mechanisms driving leukocyte lipid body disappearance were not related to loss of cell viability, 5-lipoxygenase inhibition, ATP autocrine/paracrine activity, or biogenesis inhibition. Proteasomal-dependent breakdown of lipid bodies appears to control NDGA-driven leukocyte lipid body reduction, since it was Bortezomib-sensitive in macrophages, neutrophils and eosinophils. Our findings unveil an acute NDGA-triggered lipid body catabolic event - a novel experimental model for the still neglected research area on leukocyte lipid body catabolism, additionally favoring further insights on proteasomal contribution to lipid body breakdown.
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Affiliation(s)
- Maria N de Lira
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Laboratório de Imunobiofisica, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; BioMed X Institute (GmbH), Heidelberg, Germany
| | - Lukas Bolini
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Natália R T Amorim
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Hercules A Silva-Souza
- Laboratório de Imunobiofisica, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Divisão de Verificação e Estudos Técnico-Científicos, Instituto Nacional de Metrologia Qualidade e Tecnologia, Duque de Caxias 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
| | - Claudio Canetti
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Pedro M Persechini
- Laboratório de Imunobiofisica, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; This paper is dedicated to the memory of our dear colleague and friend Pedro M. Persechini, who passed prematurely and whose devotion to understanding the mechanisms of action of NDGA was unsurpassed
| | - 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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36
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Sun X, Ni Z, Tang J, Ding Y, Wang X, Li F. The abaI/ abaR Quorum Sensing System Effects on Pathogenicity in Acinetobacter baumannii. Front Microbiol 2021; 12:679241. [PMID: 34322102 PMCID: PMC8312687 DOI: 10.3389/fmicb.2021.679241] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 06/08/2021] [Indexed: 12/26/2022] Open
Abstract
Acinetobacter baumannii is a Gram-negative pathogen that has emerged as one of the most troublesome pathogens for healthcare institutions globally. Bacterial quorum sensing (QS) is a process of cell-to-cell communication that relies on the production, secretion, and detection of autoinducer (AI) signals to share information about cell density and regulate gene expression accordingly. The molecular and genetic bases of A. baumannii virulence remains poorly understood. Therefore, the contribution of the abaI/abaR QS system to growth characteristics, morphology, biofilm formation, resistance, motility, and virulence of A. baumannii was studied in detail. RNA sequencing (RNA-seq) analysis indicated that genes involved in various aspects of energy production and conversion; valine, leucine, and isoleucine degradation; and lipid transport and metabolism are associated with bacterial pathogenicity. Our work provides a new insight into the abaI/abaR QS system effects on pathogenicity in A. baumannii. We propose that targeting the acyl homoserine lactone (AHL) synthase enzyme abaI could provide an effective strategy for attenuating virulence. On the contrary, interdicting the AI synthase receptor abaR elicits unpredictable consequences, which may lead to enhanced bacterial virulence.
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Affiliation(s)
- Xiaoyu Sun
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Zhaohui Ni
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Jie Tang
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Yue Ding
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China
| | - Xinlei Wang
- Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, China
| | - Fan Li
- Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, China.,The Key Laboratory for Bionics Engineering, Ministry of Education, Jilin University, Changchun, China.,Engineering Research Center for Medical Biomaterials of Jilin Province, Jilin University, Changchun, China.,Key Laboratory for Biomedical Materials of Jilin Province, Jilin University, Changchun, China.,State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Xinjiang, China
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37
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Taurine-Mediated IDOL Contributes to Resolution of Streptococcus uberis Infection. Infect Immun 2021; 89:IAI.00788-20. [PMID: 33593888 DOI: 10.1128/iai.00788-20] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 02/01/2021] [Indexed: 12/17/2022] Open
Abstract
Metabolic alterations occur in pathogenic infections, but the role of lipid metabolism in the progression of bacterial mastitis is unclear. Cross talk between lipid droplets (LDs) and invading bacteria occurs, and targeting of de novo lipogenesis inhibits pathogen reproduction. In this study, we investigate the role(s) of lipid metabolism in mammary cells during Streptococcus uberis infection. Our results indicate that S. uberis induces the synthesis of fatty acids and production of LDs. Importantly, taurine reduces fatty acid synthesis, the abundance of LDs and the in vitro bacterial load of S. uberis These changes are mediated, at least partly, by the E3 ubiquitin ligase IDOL, which is associated with the degradation of low-density lipoprotein receptors (LDLRs). We have identified a critical role for IDOL-mediated fatty acid synthesis in bacterial infection, and we suggest that taurine may be an effective prophylactic or therapeutic strategy for preventing S. uberis mastitis.
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38
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da Silva Marques P, da Fonseca-Martins AM, Carneiro MPD, Amorim NRT, de Pão CRR, Canetti C, Diaz BL, de Matos Guedes HL, Bandeira-Melo C. Eosinophils increase macrophage ability to control intracellular Leishmania amazonensis infection via PGD 2 paracrine activity in vitro. Cell Immunol 2021; 363:104316. [PMID: 33713902 DOI: 10.1016/j.cellimm.2021.104316] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 02/04/2021] [Accepted: 02/04/2021] [Indexed: 01/18/2023]
Abstract
Clinical and experimental studies have described eosinophil infiltration in Leishmania amazonensis infection sites, positioning eosinophils strategically adjacent to the protozoan-infected macrophages in cutaneous leishmaniasis. Here, by co-culturing mouse eosinophils with L. amazonensis-infected macrophages, we studied the impact of eosinophils on macrophage ability to regulate intracellular L. amazonensis infection. Eosinophils prevented the increase in amastigote numbers within macrophages by a mechanism dependent on a paracrine activity mediated by eosinophil-derived prostaglandin (PG) D2 acting on DP2 receptors. Exogenous PGD2 mimicked eosinophil-mediated effect on managing L. amazonensis intracellular infection by macrophages and therefore may function as a complementary tool for therapeutic intervention in L. amazonensis-driven cutaneous leishmaniasis.
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Affiliation(s)
- Patrícia da Silva Marques
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Alessandra M da Fonseca-Martins
- Laboratório de Imunobiologia das leishmanioses, Instituto de Microbiologia Paulo de Góes, Departamento de Imunologia, Universidade Federal do Rio de Janeiro, RJ, Brazil
| | - Monique Pacheco Duarte Carneiro
- Laboratório de Bioquímica e Biologia molecular de Proteases, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Natália R T Amorim
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Camila R Rodrigues de Pão
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Claudio Canetti
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Bruno L Diaz
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Herbert L de Matos Guedes
- Instituto de Microbiologia Paulo de Góes, Departamento de Imunologia, Universidade Federal do Rio de Janeiro, RJ, Brazil; Laboratório Interdisciplinar de Pesquisas Médicas, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, RJ, Brazil
| | - Christianne Bandeira-Melo
- Laboratório de Inflamação, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
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Boldarine VT, Joyce E, Pedroso AP, Telles MM, Oyama LM, Bueno AA, Ribeiro EB. Oestrogen replacement fails to fully revert ovariectomy-induced changes in adipose tissue monoglycerides, diglycerides and cholesteryl esters of rats fed a lard-enriched diet. Sci Rep 2021; 11:3841. [PMID: 33589704 PMCID: PMC7884784 DOI: 10.1038/s41598-021-82837-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 01/22/2021] [Indexed: 01/09/2023] Open
Abstract
Menopause may be accompanied by abdominal obesity and inflammation, conditions accentuated by high-fat intake, especially of saturated fat (SFA)-rich diets. We investigated the consequences of high-SFA intake on the fatty acid (FA) profile of monoglycerides, diglycerides and cholesteryl esters from retroperitoneal white adipose tissue (RET) of rats with ovariectomy-induced menopause, and the effect of oestradiol replacement. Wistar rats were either ovariectomized (Ovx) or sham operated (Sham) and fed either standard chow (C) or lard-enriched diet (L) for 12 weeks. Half of the Ovx rats received 17β-oestradiol replacement (Ovx + E2). Body weight and food intake were measured weekly. RET neutral lipids were chromatographically separated and FAs analysed by gas chromatography. Ovariectomy alone increased body weight, feed efficiency, RET mass, leptin and insulin levels, leptin/adiponectin ratio, HOMA-IR and HOMA-β indexes. OvxC + E2 showed attenuation in nearly all blood markers. HOMA-β index was restored in OvxL + E2. OvxC showed significantly disturbed SFA and polyunsaturated FA (PUFA) profile in RET cholesteryl esters (CE). OvxC also showed increased monounsaturated FA (MUFA) in the monoglyceride diglyceride (Mono-Di) fraction. Similar changes were not observed in OvxL, although increased SFA and decreased PUFA was observed in Mono-Di. Overall, HRT was only partially able to revert changes induced by ovariectomy. There appears to be increased mobilization of essential FA in Ovx via CE, which is a dynamic lipid species. The same results were not found in Mono-Di, which are more inert. HRT may be helpful to preserve FA profile in visceral fat, but possibly not wholly sufficient in reverting the metabolic effects induced by menopause.
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Affiliation(s)
- Valter Tadeu Boldarine
- Departamento de Fisiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Botucatu 862, 2º andar, Vila Clementino, São Paulo, SP, 04023-062, Brasil.
| | - Ellen Joyce
- Department of Biological Sciences, College of Health, Life and Environmental Sciences, University of Worcester, Worcester, UK
| | - Amanda Paula Pedroso
- Departamento de Fisiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Botucatu 862, 2º andar, Vila Clementino, São Paulo, SP, 04023-062, Brasil
| | - Mônica Marques Telles
- Departamento de Fisiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Botucatu 862, 2º andar, Vila Clementino, São Paulo, SP, 04023-062, Brasil
| | - Lila Missae Oyama
- Departamento de Fisiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Botucatu 862, 2º andar, Vila Clementino, São Paulo, SP, 04023-062, Brasil
| | - Allain Amador Bueno
- Department of Biological Sciences, College of Health, Life and Environmental Sciences, University of Worcester, Worcester, UK
| | - Eliane Beraldi Ribeiro
- Departamento de Fisiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Botucatu 862, 2º andar, Vila Clementino, São Paulo, SP, 04023-062, Brasil
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Wang L, Jiang G, Jing N, Liu X, Zhuang H, Zeng W, Liang W, Liu Z. Downregulating testosterone levels enhance immunotherapy efficiency. Oncoimmunology 2021; 10:1981570. [PMID: 34595060 PMCID: PMC8477942 DOI: 10.1080/2162402x.2021.1981570] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Low response rates to certain tumor types remain a major challenge for immune checkpoint blockade therapy. In this study, we first conducted an integrated biomarker evaluation of bladder cancer patients from confirmatory cohorts (IMvigor210) and found that no significant differences exist between sexes before acceptance of anti-PD-L1 treatment, whereas male patients showed a better response. Thus, we then focused on sex-related changes post anti-PD-L1 treatment and found no obvious impact on the gut microbiota in male mice but a significant decrease in the sex hormone levels. Further, castration dramatically enhanced the antitumor efficacy against murine colon adenocarcinoma in male mice. Moreover, a narrow-spectrum antibiotic, colistin was innovatively used for deregulation of testosterone levels to enhance the immunotherapy efficiency in male mice. These findings indicate that the impact on the sex hormone levels in males may contribute to the sexual dimorphism in response and provide a promising way to enhance immunotherapy efficiency.
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Affiliation(s)
- Luoyang Wang
- Department of Chemical Engineering, Tsinghua University, Beijing, China
- Key Lab of Industrial Biocatalysis, Ministry of Education, Beijing, China
| | - Guoqiang Jiang
- Department of Chemical Engineering, Tsinghua University, Beijing, China
- Key Lab of Industrial Biocatalysis, Ministry of Education, Beijing, China
- CONTACT Guoqiang Jiang
| | - Nan Jing
- Department of Chemical Engineering, Tsinghua University, Beijing, China
- Key Lab of Industrial Biocatalysis, Ministry of Education, Beijing, China
| | - Xuerun Liu
- Department of Chemical Engineering, Tsinghua University, Beijing, China
- Key Lab of Industrial Biocatalysis, Ministry of Education, Beijing, China
| | - Huiren Zhuang
- Department of Chemical Engineering, Tsinghua University, Beijing, China
- Key Lab of Industrial Biocatalysis, Ministry of Education, Beijing, China
| | - Wenfeng Zeng
- Protein and Peptide Pharmaceutical Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Wei Liang
- Protein and Peptide Pharmaceutical Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Zheng Liu
- Department of Chemical Engineering, Tsinghua University, Beijing, China
- Key Lab of Industrial Biocatalysis, Ministry of Education, Beijing, China
- Zheng Liu Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China; Key Lab of Industrial Biocatalysis, Ministry of Education, Beijing, China
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41
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Maya-Monteiro CM, Corrêa-da-Silva F, Hofmann SS, Hesselink MKC, la Fleur SE, Yi CX. Lipid Droplets Accumulate in the Hypothalamus of Mice and Humans with and without Metabolic Diseases. Neuroendocrinology 2021; 111:263-272. [PMID: 32422642 DOI: 10.1159/000508735] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 05/15/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND In peripheral tissues, the lipid droplet (LD) organelle links lipid metabolism, inflammation, and insulin resistance. Little is known about the brain LDs. OBJECTIVES We hypothesized that hypothalamic LDs would be altered in metabolic diseases. METHODS We used immunofluorescence labeling of the specific LD protein, PLIN2, as the approach to visualize and quantify LDs. RESULTS LDs were abundant in the hypothalamic third ventricle wall layer with similar heterogeneous distributions between control mice and humans. The LD content was enhanced by high-fat diet (HFD) in both wild-type and in low-density lipoprotein receptor deficient (Ldlr -/- HFD) mice. Strikingly, we observed a lower LD amount in type 2 diabetes mellitus (T2DM) patients when compared with non-T2DM patients. CONCLUSIONS LDs accumulate in the normal hypothalamus, with similar distributions in human and mouse. Moreover, metabolic diseases differently modify LD content in mouse and human. Our results suggest that hypothalamic LD accumulation is an important target to the study of metabolism.
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Affiliation(s)
- Clarissa Menezes Maya-Monteiro
- Laboratory of Immunopharmacology, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil,
- Laboratory of Endocrinology and Department of Endocrinology and Metabolism, Amsterdam Neuroscience, Amsterdam University Medical Centers (UMC), University of Amsterdam, Amsterdam, The Netherlands,
- Netherlands Institute for Neuroscience, an Institute of the Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands,
| | - Felipe Corrêa-da-Silva
- Laboratory of Endocrinology and Department of Endocrinology and Metabolism, Amsterdam Neuroscience, Amsterdam University Medical Centers (UMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Susanna S Hofmann
- Institute for Diabetes and Regeneration, Helmholtz Diabetes Center, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Matthijs K C Hesselink
- Department of Nutrition and Movement Sciences, Maastricht University Medical Centre+ and NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht, The Netherlands
| | - Susanne E la Fleur
- Laboratory of Endocrinology and Department of Endocrinology and Metabolism, Amsterdam Neuroscience, Amsterdam University Medical Centers (UMC), University of Amsterdam, Amsterdam, The Netherlands
- Netherlands Institute for Neuroscience, an Institute of the Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands
| | - Chun-Xia Yi
- Laboratory of Endocrinology and Department of Endocrinology and Metabolism, Amsterdam Neuroscience, Amsterdam University Medical Centers (UMC), University of Amsterdam, Amsterdam, The Netherlands
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42
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Dias SSG, Soares VC, Ferreira AC, Sacramento CQ, Fintelman-Rodrigues N, Temerozo JR, Teixeira L, Nunes da Silva MA, Barreto E, Mattos M, de Freitas CS, Azevedo-Quintanilha IG, Manso PPA, Miranda MD, Siqueira MM, Hottz ED, Pão CRR, Bou-Habib DC, Barreto-Vieira DF, Bozza FA, Souza TML, Bozza PT. Lipid droplets fuel SARS-CoV-2 replication and production of inflammatory mediators. PLoS Pathog 2020; 16:e1009127. [PMID: 33326472 PMCID: PMC7773323 DOI: 10.1371/journal.ppat.1009127] [Citation(s) in RCA: 164] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/30/2020] [Accepted: 11/10/2020] [Indexed: 12/24/2022] Open
Abstract
Viruses are obligate intracellular parasites that make use of the host metabolic machineries to meet their biosynthetic needs. Thus, identifying the host pathways essential for the virus replication may lead to potential targets for therapeutic intervention. The mechanisms and pathways explored by SARS-CoV-2 to support its replication within host cells are not fully known. Lipid droplets (LD) are organelles with major functions in lipid metabolism, energy homeostasis and intracellular transport, and have multiple roles in infections and inflammation. Here we described that monocytes from COVID-19 patients have an increased LD accumulation compared to SARS-CoV-2 negative donors. In vitro, SARS-CoV-2 infection were seen to modulate pathways of lipid synthesis and uptake as monitored by testing for CD36, SREBP-1, PPARγ, and DGAT-1 expression in monocytes and triggered LD formation in different human cell lines. LDs were found in close apposition with SARS-CoV-2 proteins and double-stranded (ds)-RNA in infected Vero cells. Electron microscopy (EM) analysis of SARS-CoV-2 infected Vero cells show viral particles colocalizing with LDs, suggestive that LDs might serve as an assembly platform. Pharmacological modulation of LD formation by inhibition of DGAT-1 with A922500 significantly inhibited SARS-CoV-2 replication as well as reduced production of mediators pro-inflammatory response. Taken together, we demonstrate the essential role of lipid metabolic reprograming and LD formation in SARS-CoV-2 replication and pathogenesis, opening new opportunities for therapeutic strategies to COVID-19. In spite of the enormous scientific efforts to understand mechanisms of SARS-CoV2-induced disease and to develop strategies to control COVID-19 pandemic, many aspects of SARS-CoV2 biology and pathogenesis remain elusive. Several RNA viruses are able to modulate the host lipid metabolism and to recruit LDs to enhance their replication/particle assembling capacity through mechanisms that vary according to the virus and the host cell infected. The mechanisms and pathways explored by SARS-CoV-2 to support its replication within host cells are still largely unknown. Here we demonstrated that lipid droplets (LDs) participate in SARS-CoV2 infection favoring virus replication and heightening inflammatory mediator production. SARS-CoV2 infection increased the expression of key proteins in the regulation of lipid metabolism and the amounts of LDs per cell. In addition, we have found SARS-CoV2 and/or its components associated with LDs in infected cells, suggestive that LDs are recruited as part of replication compartment. Moreover, pharmacological inhibition of DGAT-1, a key enzyme for LD formation, reduces SARS-CoV2 replication, inflammatory mediator production and cell death. Our findings contribute to unveil the complex mechanism by which SARS-CoV-2 make use of cellular metabolism and organelles to coordinate different steps of the viral replication cycle and host immunity, opening new perspectives for SARS-CoV2 antiviral development.
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Affiliation(s)
- Suelen Silva Gomes Dias
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Vinicius Cardoso Soares
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Imunologia e Inflamação, Universidade Federal do Rio de Janeiro, UFRJ, Rio de Janeiro, Rio de Janeiro, Brazil
| | - André C. Ferreira
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
- Centro De Desenvolvimento Tecnológico Em Saúde (CDTS) and National Institute for Science and Technology on Innovation on Diseases of Neglected Populations (INCT/IDNP), FIOCRUZ, Rio de Janeiro, Brasil
- Universidade Iguaçu, Nova Iguaçu, Rio de Janeiro, Brazil
| | - Carolina Q. Sacramento
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
- Centro De Desenvolvimento Tecnológico Em Saúde (CDTS) and National Institute for Science and Technology on Innovation on Diseases of Neglected Populations (INCT/IDNP), FIOCRUZ, Rio de Janeiro, Brasil
| | - Natalia Fintelman-Rodrigues
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
- Centro De Desenvolvimento Tecnológico Em Saúde (CDTS) and National Institute for Science and Technology on Innovation on Diseases of Neglected Populations (INCT/IDNP), FIOCRUZ, Rio de Janeiro, Brasil
| | - Jairo R. Temerozo
- Laboratório de Pesquisas sobre o Timo and Instituto National de Ciencia e Tecnologia em Neuroimunomodulação (INCT/NIM), Instituto Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lívia Teixeira
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcos Alexandre Nunes da Silva
- Laboratório de Morfologia e Morfogênese Viral, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ester Barreto
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mayara Mattos
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
- Centro De Desenvolvimento Tecnológico Em Saúde (CDTS) and National Institute for Science and Technology on Innovation on Diseases of Neglected Populations (INCT/IDNP), FIOCRUZ, Rio de Janeiro, Brasil
| | - Caroline S. de Freitas
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
- Centro De Desenvolvimento Tecnológico Em Saúde (CDTS) and National Institute for Science and Technology on Innovation on Diseases of Neglected Populations (INCT/IDNP), FIOCRUZ, Rio de Janeiro, Brasil
| | - Isaclaudia G. Azevedo-Quintanilha
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Pedro Paulo A. Manso
- Laboratorio de Patologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Milene D. Miranda
- Laboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marilda Mendonça Siqueira
- Laboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Eugenio D. Hottz
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratorio de Imunotrombose, Departamento de Bioquímica, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Camila R. R. Pão
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Dumith C. Bou-Habib
- Laboratório de Pesquisas sobre o Timo and Instituto National de Ciencia e Tecnologia em Neuroimunomodulação (INCT/NIM), Instituto Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Debora F. Barreto-Vieira
- Laboratório de Morfologia e Morfogênese Viral, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fernando A. Bozza
- Instituto Nacional de Infectologia Evandro Chagas (INI), FIOCRUZ, Rio de Janeiro, Brazil
- Instituto D’Or de Pesquisa e Ensino (IDOR), Rio de Janeiro, Brazil
| | - Thiago M. L. Souza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
- Centro De Desenvolvimento Tecnológico Em Saúde (CDTS) and National Institute for Science and Technology on Innovation on Diseases of Neglected Populations (INCT/IDNP), FIOCRUZ, Rio de Janeiro, Brasil
| | - Patricia T. Bozza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail: ,
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Pagliari F, Marafioti MG, Genard G, Candeloro P, Viglietto G, Seco J, Tirinato L. ssRNA Virus and Host Lipid Rearrangements: Is There a Role for Lipid Droplets in SARS-CoV-2 Infection? Front Mol Biosci 2020; 7:578964. [PMID: 33134318 PMCID: PMC7579428 DOI: 10.3389/fmolb.2020.578964] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 09/03/2020] [Indexed: 12/12/2022] Open
Abstract
Since its appearance, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has immediately alarmed the World Health Organization for its very high contagiousness and the complexity of patient clinical profiles. The worldwide scientific community is today gathered in a massive effort in order to develop safe vaccines and effective therapies in the shortest possible time. Every day, new pieces of SARS-CoV-2 infective puzzle are disclosed. Based on knowledge gained with other related coronaviruses and, more in general, on single-strand RNA viruses, we highlight underexplored molecular routes in which lipids and lipid droplets (LDs) might serve essential functions in viral infections. In fact, both lipid homeostasis and the pathways connected to lipids seem to be fundamental in all phases of the coronavirus infection. This review aims at describing potential roles for lipid and LDs in host-virus interactions and suggesting LDs as new and central cellular organelles to be investigated as potential targets against SARS-CoV-2 infection.
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Affiliation(s)
- Francesca Pagliari
- Biomedical Physics in Radiation Oncology, German Cancer Research Center, Heidelberg, Germany
| | - Maria Grazia Marafioti
- Biomedical Physics in Radiation Oncology, German Cancer Research Center, Heidelberg, Germany
| | - Geraldine Genard
- Biomedical Physics in Radiation Oncology, German Cancer Research Center, Heidelberg, Germany
| | - Patrizio Candeloro
- BioNEM Laboratory, Department of Experimental and Clinical Medicine, Magna Graecia University, Catanzaro, Italy
| | - Giuseppe Viglietto
- Department of Experimental and Clinical Medicine, Magna Graecia University, Catanzaro, Italy
| | - Joao Seco
- Biomedical Physics in Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.,Department of Physics and Astronomy, Heidelberg University, Heidelberg, Germany
| | - Luca Tirinato
- Biomedical Physics in Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.,BioNEM Laboratory, Department of Experimental and Clinical Medicine, Magna Graecia University, Catanzaro, Italy
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44
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Chausse B, Kakimoto PA, Kann O. Microglia and lipids: how metabolism controls brain innate immunity. Semin Cell Dev Biol 2020; 112:137-144. [PMID: 32807643 DOI: 10.1016/j.semcdb.2020.08.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/31/2020] [Accepted: 08/01/2020] [Indexed: 12/26/2022]
Abstract
Microglia are universal sensors of alterations in CNS physiology. These cells integrate complex molecular signals and undergo comprehensive phenotypical remodeling to adapt inflammatory responses. In the last years, single-cell analyses have revealed that microglia exhibit diverse phenotypes during development, growth and disease. Emerging evidence suggests that such phenotype transitions are mediated by reprogramming of cell metabolism. Indeed, metabolic pathways are distinctively altered in activated microglia and are central nodes controlling microglial responses. Microglial lipid metabolism has been specifically involved in the control of microglial activation and effector functions, such as migration, phagocytosis and inflammatory signaling, and minor disturbances in microglial lipid handling associates with altered brain function in disorders featuring neuroinflammation. In this review, we explore new and relevant aspects of microglial metabolism in health and disease. We give special focus on how different branches of lipid metabolism, such as lipid sensing, synthesis and oxidation, integrate and control essential aspects of microglial biology, and how disturbances in these processes associate with aging and the pathogenesis of, for instance, multiple sclerosis and Alzheimer's disease. Finally, challenges and advances in microglial lipid research are discussed.
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Affiliation(s)
- Bruno Chausse
- Institute of Physiology and Pathophysiology, University of Heidelberg, D-69120 Heidelberg, Germany.
| | - Pamela A Kakimoto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000, São Paulo, Brazil
| | - Oliver Kann
- Institute of Physiology and Pathophysiology, University of Heidelberg, D-69120 Heidelberg, Germany; Interdisciplinary Center for Neurosciences, University of Heidelberg, D-69120 Heidelberg, Germany
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45
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Allen PE, Martinez JJ. Modulation of Host Lipid Pathways by Pathogenic Intracellular Bacteria. Pathogens 2020; 9:pathogens9080614. [PMID: 32731350 PMCID: PMC7460438 DOI: 10.3390/pathogens9080614] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 07/17/2020] [Accepted: 07/25/2020] [Indexed: 12/22/2022] Open
Abstract
Lipids are a broad group of molecules required for cell maintenance and homeostasis. Various intracellular pathogens have developed mechanisms of modulating and sequestering host lipid processes for a large array of functions for both bacterial and host cell survival. Among the host cell lipid functions that intracellular bacteria exploit for infection are the modulation of host plasma membrane microdomains (lipid rafts) required for efficient bacterial entry; the recruitment of specific lipids for membrane integrity of intracellular vacuoles; and the utilization of host lipid droplets for the regulation of immune responses and for energy production through fatty acid β-oxidation and oxidative phosphorylation. The majority of published studies on the utilization of these host lipid pathways during infection have focused on intracellular bacterial pathogens that reside within a vacuole during infection and, thus, have vastly different requirements for host lipid metabolites when compared to those intracellular pathogens that are released into the host cytosol upon infection. Here we summarize the mechanisms by which intracellular bacteria sequester host lipid species and compare the modulation of host lipid pathways and metabolites during host cell infection by intracellular pathogens residing in either a vacuole or within the cytosol of infected mammalian cells. This review will also highlight common and unique host pathways necessary for intracellular bacterial growth that could potentially be targeted for therapeutic intervention.
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46
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Barbosa-Lima G, Hottz ED, de Assis EF, Liechocki S, Souza TML, Zimmerman GA, Bozza FA, Bozza PT. Dengue virus-activated platelets modulate monocyte immunometabolic response through lipid droplet biogenesis and cytokine signaling. J Leukoc Biol 2020; 108:1293-1306. [PMID: 32663907 DOI: 10.1002/jlb.4ma0620-658r] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 06/11/2020] [Accepted: 06/28/2020] [Indexed: 01/09/2023] Open
Abstract
Dengue is characterized as one of the most important arthropod-borne human viral diseases, representing a public health problem. Increased activation of immune cells is involved in the progression of infection to severe forms. Recently, our group demonstrated the contribution of platelet-monocyte interaction to inflammatory responses in dengue, adding to evolving evidence that platelets have inflammatory functions and can regulate different aspects of innate immune responses. Furthermore, stimuli-specific-activated platelets can promote phenotypic changes and metabolic reprogramming in monocytes. Thus, this study aimed to evaluate the roles of dengue virus (DENV)-activated platelets on immunometabolic reprogramming of monocytes in vitro, focusing on lipid droplet (LD) biogenesis. We demonstrated that platelets exposed to DENV in vitro form aggregates with monocytes and signal to LD formation and CXCL8/IL-8, IL-10, CCL2, and PGE2 secretion. Pharmacologic inhibition of LD biogenesis prevents PGE2 secretion, but not CXCL8/IL-8 release, by platelet-monocyte complexes. In exploring the mechanisms involved, we demonstrated that LD formation in monocytes exposed to DENV-activated platelets is partially dependent on platelet-produced MIF. Additionally, LD formation is higher in monocytes, which have platelets adhered on their surface, suggesting that beyond paracrine signaling, platelet adhesion is an important event in platelet-mediated modulation of lipid metabolism in monocytes. Together, our results demonstrate that activated platelets aggregate with monocytes during DENV infection and signal to LD biogenesis and the secretion of inflammatory mediators, which may contribute to dengue immunopathogenesis.
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Affiliation(s)
- Giselle Barbosa-Lima
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Eugenio D Hottz
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil.,Laboratory of Immunothrombosis, Department of Biochemistry, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil
| | - Edson F de Assis
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Sally Liechocki
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Thiago Moreno L Souza
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil.,National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Guy A Zimmerman
- Molecular Medicine Program and Department of Internal Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Fernando A Bozza
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil.,Intensive Medicine Laboratory, National Institute of Infectious Disease Evandro Chagas, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil.,D'Or Institute of Research, Rio de Janeiro, RJ, Brazil
| | - Patricia T Bozza
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
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47
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Truong NTT, Lydic TA, Bazil JN, Suryadevara A, Olson LK. Regulation of lipid metabolism in pancreatic beta cells by interferon gamma: A link to anti-viral function. Cytokine 2020; 133:155147. [PMID: 32492632 DOI: 10.1016/j.cyto.2020.155147] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 05/01/2020] [Accepted: 05/25/2020] [Indexed: 12/22/2022]
Abstract
Interferons (IFN) have been shown to alter lipid metabolism in immune and some non-hematopoietic cells and this affects host cell response to pathogens. In type 1 diabetes, IFNγ acts as a proinflammatory cytokine that, along with other cytokines, is released during pancreatic beta cell autoinflammation and contributes to immune response and beta cell dysfunction. The hypothesis tested herein is that IFN modifies beta cell lipid metabolism and this is associated with enhanced anti-viral response and beta cell stress. Treatment of INS-1 cells with IFNγ for 6 to 24 h led to a dynamic change in TAG and lipid droplet (LD) levels, with a decrease at 6 h and an increase at 24 h. The later accumulation of TAG was associated with increased de novo lipogenesis (DNL), and impaired mitochondrial fatty acid oxidation (FAO). Gene expression results suggested that IFNγ regulates lipolytic, lipogenic, LD and FAO genes in a temporal manner. The changes in lipid gene expression are dependent on the classical Janus kinase (JAK) pathway. Pretreatment with IFNγ robustly enhanced anti-viral gene expression induced by the viral mimetic polyinosinic: polycytidylic acid (PIC), and this potentiating effect of IFNγ was markedly attenuated by inhibitors of DNL. The IFNγ-induced accumulation of lipid, however, was insufficient to cause endoplasmic reticulum (ER) stress. These studies demonstrated a non-canonical effect of IFNγ in regulation of pancreatic beta cell lipid metabolism that is intimately linked with host cell defense and might alter cellular function early in the progression to type 1 diabetes.
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Affiliation(s)
- Nguyen T T Truong
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Todd A Lydic
- Department of Physiology, Michigan State University, East Lansing, MI, United States; Mass Spectrometry Core (MMD-CMSC), Michigan State University, East Lansing, MI, United States
| | - Jason N Bazil
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Abhijeet Suryadevara
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - L Karl Olson
- Department of Physiology, Michigan State University, East Lansing, MI, United States.
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48
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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] [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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49
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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] [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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50
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Guijas C, Bermúdez MA, Meana C, Astudillo AM, Pereira L, Fernández-Caballero L, Balboa MA, Balsinde J. Neutral Lipids Are Not a Source of Arachidonic Acid for Lipid Mediator Signaling in Human Foamy Monocytes. Cells 2019; 8:cells8080941. [PMID: 31434356 PMCID: PMC6721759 DOI: 10.3390/cells8080941] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 08/16/2019] [Accepted: 08/18/2019] [Indexed: 12/13/2022] Open
Abstract
Human monocytes exposed to free arachidonic acid (AA), a secretory product of endothelial cells, acquire a foamy phenotype which is due to the accumulation of cytoplasmic lipid droplets with high AA content. Recruitment of foamy monocytes to the inflamed endothelium contributes to the development of atherosclerotic lesions. In this work, we investigated the potential role of AA stored in the neutral lipids of foamy monocytes to be cleaved by lipases and contribute to lipid mediator signaling. To this end, we used mass spectrometry-based lipidomic approaches combined with strategies to generate monocytes with different concentrations of AA. Results from our experiments indicate that the phospholipid AA pool in monocytes is stable and does not change upon exposure of the cells to the external AA. On the contrary, the AA pool in triacylglycerol is expandable and can accommodate relatively large amounts of fatty acid. Stimulation of the cells with opsonized zymosan results in the expected decreases of cellular AA. Under all conditions examined, all of the AA decreases observed in stimulated cells were accounted for by decreases in the phospholipid pool; we failed to detect any contribution of the triacylglycerol pool to the response. Experiments utilizing selective inhibitors of phospholipid or triacylglyerol hydrolysis confirmed that the phospholipid pool is the sole contributor of the AA liberated by stimulated cells. Thus, the AA in the triacylglycerol is not a source of free AA for the lipid mediator signaling during stimulation of human foamy monocytes and may be used for other cellular functions.
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Affiliation(s)
- Carlos Guijas
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, 47003 Valladolid, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), 28029 Madrid, Spain
| | - Miguel A Bermúdez
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, 47003 Valladolid, Spain
| | - Clara Meana
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, 47003 Valladolid, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), 28029 Madrid, Spain
| | - Alma M Astudillo
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, 47003 Valladolid, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), 28029 Madrid, Spain
| | - Laura Pereira
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, 47003 Valladolid, Spain
| | - Lidia Fernández-Caballero
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, 47003 Valladolid, Spain
| | - María A Balboa
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, 47003 Valladolid, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), 28029 Madrid, Spain
| | - Jesús Balsinde
- Instituto de Biología y Genética Molecular, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Valladolid, 47003 Valladolid, Spain.
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), 28029 Madrid, Spain.
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