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Dunbar H, Hawthorne IJ, McNamee EN, Armstrong ME, Donnelly SC, English K. The human MIF polymorphism CATT 7 enhances pro-inflammatory macrophage polarization in a clinically relevant model of allergic airway inflammation. FASEB J 2024; 38:e23576. [PMID: 38530238 DOI: 10.1096/fj.202400207r] [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: 01/26/2024] [Revised: 02/29/2024] [Accepted: 03/11/2024] [Indexed: 03/27/2024]
Abstract
High level expression of the pro-inflammatory cytokine macrophage migration inhibitory factor (MIF) has been associated with severe asthma. The role of MIF and its functional promotor polymorphism in innate immune training is currently unknown. Using novel humanized CATT7 MIF mice, this study is the first to investigate the effect of MIF on bone marrow-derived macrophage (BMDM) memory after house dust mite (HDM) challenge. CATT7 BMDMs demonstrated a significant primed increase in M1 markers following HDM and LPS stimulation, compared to naive mice. This M1 signature was found to be MIF-dependent, as administration of a small molecule MIF inhibitor, SCD-19, blocked the induction of this pro-inflammatory M1-like phenotype in BMDMs from CATT7 mice challenged with HDM. Training naive BMDMs in vitro with HDM for 24 h followed by a rest period and subsequent stimulation with LPS led to significantly increased production of the pro-inflammatory cytokine TNFα in BMDMs from CATT7 mice but not WT mice. Addition of the pan methyltransferase inhibitor MTA before HDM training significantly abrogated this effect in BMDMs from CATT7 mice, suggesting that HDM-induced training is associated with epigenetic remodelling. These findings suggest that trained immunity induced by HDM is under genetic control, playing an important role in asthma patients with the high MIF genotypes (CATT6/7/8).
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Affiliation(s)
- Hazel Dunbar
- Department of Biology, Maynooth University, Maynooth, Ireland
- Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, Ireland
| | - Ian J Hawthorne
- Department of Biology, Maynooth University, Maynooth, Ireland
- Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, Ireland
| | - Eóin N McNamee
- Department of Biology, Maynooth University, Maynooth, Ireland
- Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, Ireland
| | - Michelle E Armstrong
- Department of Medicine, Trinity College Dublin and Tallaght University Hospital, Dublin, Ireland
| | - Seamas C Donnelly
- Department of Medicine, Trinity College Dublin and Tallaght University Hospital, Dublin, Ireland
| | - Karen English
- Department of Biology, Maynooth University, Maynooth, Ireland
- Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, Ireland
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2
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Kumar M, Sharma S, Kumar J, Barik S, Mazumder S. Mitochondrial electron transport chain in macrophage reprogramming: Potential role in antibacterial immune response. CURRENT RESEARCH IN IMMUNOLOGY 2024; 5:100077. [PMID: 38572399 PMCID: PMC10987323 DOI: 10.1016/j.crimmu.2024.100077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 03/21/2024] [Accepted: 03/22/2024] [Indexed: 04/05/2024] Open
Abstract
Macrophages restrain microbial infection and reinstate tissue homeostasis. The mitochondria govern macrophage metabolism and serve as pivot in innate immunity, thus acting as immunometabolic regulon. Metabolic pathways produce electron flows that end up in mitochondrial electron transport chain (mtETC), made of super-complexes regulating multitude of molecular and biochemical processes. Cell-intrinsic and extrinsic factors influence mtETC structure and function, impacting several aspects of macrophage immunity. These factors provide the macrophages with alternate fuel sources and metabolites, critical to gain functional competence and overcoming pathogenic stress. Mitochondrial reactive oxygen species (mtROS) and oxidative phosphorylation (OXPHOS) generated through the mtETC are important innate immune attributes, which help macrophages in mounting antibacterial responses. Recent studies have demonstrated the role of mtETC in governing mitochondrial dynamics and macrophage polarization (M1/M2). M1 macrophages are important for containing bacterial pathogens and M2 macrophages promote tissue repair and wound healing. Thus, mitochondrial bioenergetics and metabolism are intimately coupled with innate immunity. In this review, we have addressed mtETC function as innate rheostats that regulate macrophage reprogramming and innate immune responses. Advancement in this field encourages further exploration and provides potential novel macrophage-based therapeutic targets to control unsolicited inflammation.
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Affiliation(s)
- Manmohan Kumar
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
- Immunobiology Laboratory, Department of Zoology, University of Delhi, Delhi, India
| | - Shagun Sharma
- Immunobiology Laboratory, Department of Zoology, University of Delhi, Delhi, India
- Department of Zoology, Gargi College, University of Delhi, Delhi, India
| | - Jai Kumar
- Immunobiology Laboratory, Department of Zoology, University of Delhi, Delhi, India
| | - Sailen Barik
- EonBio, 3780 Pelham Drive, Mobile, AL 36619, USA
| | - Shibnath Mazumder
- Immunobiology Laboratory, Department of Zoology, University of Delhi, Delhi, India
- Faculty of Life Sciences and Biotechnology, South Asian University, Delhi, India
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3
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Ferreira C, Vieira P, Sá H, Malva J, Castelo-Branco M, Reis F, Viana S. Polyphenols: immunonutrients tipping the balance of immunometabolism in chronic diseases. Front Immunol 2024; 15:1360065. [PMID: 38558823 PMCID: PMC10978763 DOI: 10.3389/fimmu.2024.1360065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 03/04/2024] [Indexed: 04/04/2024] Open
Abstract
Mounting evidence progressively appreciates the vital interplay between immunity and metabolism in a wide array of immunometabolic chronic disorders, both autoimmune and non-autoimmune mediated. The immune system regulates the functioning of cellular metabolism within organs like the brain, pancreas and/or adipose tissue by sensing and adapting to fluctuations in the microenvironment's nutrients, thereby reshaping metabolic pathways that greatly impact a pro- or anti-inflammatory immunophenotype. While it is agreed that the immune system relies on an adequate nutritional status to function properly, we are only just starting to understand how the supply of single or combined nutrients, all of them termed immunonutrients, can steer immune cells towards a less inflamed, tolerogenic immunophenotype. Polyphenols, a class of secondary metabolites abundant in Mediterranean foods, are pharmacologically active natural products with outstanding immunomodulatory actions. Upon binding to a range of receptors highly expressed in immune cells (e.g. AhR, RAR, RLR), they act in immunometabolic pathways through a mitochondria-centered multi-modal approach. First, polyphenols activate nutrient sensing via stress-response pathways, essential for immune responses. Second, they regulate mammalian target of rapamycin (mTOR)/AMP-activated protein kinase (AMPK) balance in immune cells and are well-tolerated caloric restriction mimetics. Third, polyphenols interfere with the assembly of NLR family pyrin domain containing 3 (NLRP3) in endoplasmic reticulum-mitochondria contact sites, inhibiting its activation while improving mitochondrial biogenesis and autophagosome-lysosome fusion. Finally, polyphenols impact chromatin remodeling and coordinates both epigenetic and metabolic reprogramming. This work moves beyond the well-documented antioxidant properties of polyphenols, offering new insights into the multifaceted nature of these compounds. It proposes a mechanistical appraisal on the regulatory pathways through which polyphenols modulate the immune response, thereby alleviating chronic low-grade inflammation. Furthermore, it draws parallels between pharmacological interventions and polyphenol-based immunonutrition in their modes of immunomodulation across a wide spectrum of socioeconomically impactful immunometabolic diseases such as Multiple Sclerosis, Diabetes (type 1 and 2) or even Alzheimer's disease. Lastly, it discusses the existing challenges that thwart the translation of polyphenols-based immunonutritional interventions into long-term clinical studies. Overcoming these limitations will undoubtedly pave the way for improving precision nutrition protocols and provide personalized guidance on tailored polyphenol-based immunonutrition plans.
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Affiliation(s)
- Carolina Ferreira
- Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Pedro Vieira
- Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Polytechnic Institute of Coimbra, ESTESC-Coimbra Health School, Pharmacy, Coimbra, Portugal
| | - Helena Sá
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Institute of Immunology, Faculty of Medicine (FMUC), University of Coimbra, Coimbra, Portugal
| | - João Malva
- Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Miguel Castelo-Branco
- Clinical Academic Center of Coimbra (CACC), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT)/Institute for Nuclear Sciences Applied to Health (ICNAS), University of Coimbra, Coimbra, Portugal
- Institute of Physiology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Flávio Reis
- Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Sofia Viana
- Institute of Pharmacology and Experimental Therapeutics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Polytechnic Institute of Coimbra, ESTESC-Coimbra Health School, Pharmacy, Coimbra, Portugal
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4
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Kopecky BJ, Lavine KJ. Cardiac macrophage metabolism in health and disease. Trends Endocrinol Metab 2024; 35:249-262. [PMID: 37993313 PMCID: PMC10949041 DOI: 10.1016/j.tem.2023.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 10/25/2023] [Accepted: 10/30/2023] [Indexed: 11/24/2023]
Abstract
Cardiac macrophages are essential mediators of cardiac development, tissue homeostasis, and response to injury. Cell-intrinsic shifts in metabolism and availability of metabolites regulate macrophage function. The human and mouse heart contain a heterogeneous compilation of cardiac macrophages that are derived from at least two distinct lineages. In this review, we detail the unique functional roles and metabolic profiles of tissue-resident and monocyte-derived cardiac macrophages during embryonic development and adult tissue homeostasis and in response to pathologic and physiologic stressors. We discuss the metabolic preferences of each macrophage lineage and how metabolism influences monocyte fate specification. Finally, we highlight the contribution of cardiac macrophages and derived metabolites on cell-cell communication, metabolic health, and disease pathogenesis.
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Affiliation(s)
- Benjamin J Kopecky
- Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Kory J Lavine
- Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA; Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA; Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA.
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5
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Rath S, Hawsawi YM, Alzahrani F, Khan MI. Epigenetic regulation of inflammation: The metabolomics connection. Semin Cell Dev Biol 2024; 154:355-363. [PMID: 36127262 DOI: 10.1016/j.semcdb.2022.09.008] [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: 07/29/2022] [Revised: 09/12/2022] [Accepted: 09/12/2022] [Indexed: 10/14/2022]
Abstract
Epigenetic factors are considered the regulator of complex machinery behind inflammatory disorders and significantly contributed to the expression of inflammation-associated genes. Epigenetic modifications modulate variation in the expression pattern of target genes without affecting the DNA sequence. The current knowledge of epigenetic research focused on their role in the pathogenesis of various inflammatory diseases that causes morbidity and mortality worldwide. Inflammatory diseases are categorized as acute and chronic based on the disease severity and are regulated by the expression pattern of various genes. Hence, understanding the role of epigenetic modifications during inflammation progression will contribute to the disease outcomes and therapeutic approaches. This review also focuses on the metabolomics approach associated with the study of inflammatory disorders. Inflammatory responses and metabolic regulation are highly integrated and various advanced techniques are adopted to study the metabolic signature molecules. Here we discuss several metabolomics approaches used to link inflammatory disorders and epigenetic changes. We proposed that deciphering the mechanism behind the inflammation-metabolism loop may have immense importance in biomarkers research and may act as a principal component in drug discovery as well as therapeutic applications.
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Affiliation(s)
- Suvasmita Rath
- Center of Environment, Climate Change and Public Health, Utkal University, Vani Vihar, Bhubaneswar 751004, Odisha, India
| | - Yousef M Hawsawi
- Research Center, King Faisal Specialist Hospital and Research Center, P.O. Box 40047, Jeddah 21499, Saudi Arabia; College of Medicine, Al-Faisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia.
| | - Faisal Alzahrani
- Department of Biochemistry, King Abdulaziz University (KAU), Jeddah 21577, Saudi Arabia; Embryonic Stem Cells Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohammad Imran Khan
- Department of Biochemistry, King Abdulaziz University (KAU), Jeddah 21577, Saudi Arabia; Centre of Artificial Intelligence for Precision Medicines, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
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6
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Zhao Y, Liu Y, Zhao G, Lu H, Liu Y, Xue C, Chang Z, Liu H, Deng Y, Liang W, Wang H, Rom O, Garcia-Barrio MT, Zhu T, Guo Y, Chang L, Lin J, Chen YE, Zhang J. Myeloid BAF60a deficiency alters metabolic homeostasis and exacerbates atherosclerosis. Cell Rep 2023; 42:113171. [PMID: 37768825 PMCID: PMC10842557 DOI: 10.1016/j.celrep.2023.113171] [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: 03/20/2023] [Revised: 08/15/2023] [Accepted: 09/07/2023] [Indexed: 09/30/2023] Open
Abstract
Atherosclerosis, a leading health concern, stems from the dynamic involvement of immune cells in vascular plaques. Despite its significance, the interplay between chromatin remodeling and transcriptional regulation in plaque macrophages is understudied. We discovered the reduced expression of Baf60a, a component of the switch/sucrose non-fermentable (SWI/SNF) chromatin remodeling complex, in macrophages from advanced plaques. Myeloid-specific Baf60a deletion compromised mitochondrial integrity and heightened adhesion, apoptosis, and plaque development. BAF60a preserves mitochondrial energy homeostasis under pro-atherogenic stimuli by retaining nuclear respiratory factor 1 (NRF1) accessibility at critical genes. Overexpression of BAF60a rescued mitochondrial dysfunction in an NRF1-dependent manner. This study illuminates the BAF60a-NRF1 axis as a mitochondrial function modulator in atherosclerosis, proposing the rejuvenation of perturbed chromatin remodeling machinery as a potential therapeutic target.
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Affiliation(s)
- Yang Zhao
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA; Department of Pharmacology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Yuhao Liu
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Guizhen Zhao
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Haocheng Lu
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA; Department of Pharmacology, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yaozhong Liu
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Chao Xue
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Ziyi Chang
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Hongyu Liu
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Yongjie Deng
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Wenying Liang
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Huilun Wang
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Oren Rom
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA; Department of Pathology and Translational Pathobiology, Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center - Shreveport, Shreveport, LA 71103, USA
| | - Minerva T Garcia-Barrio
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Tianqing Zhu
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Yanhong Guo
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Lin Chang
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Jiandie Lin
- Life Sciences Institute and Department of Cell & Developmental Biology, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
| | - Y Eugene Chen
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA; Department of Pharmacology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Jifeng Zhang
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, MI 48109, USA.
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7
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Abstract
Metabolic switches are a crucial hallmark of cellular development and regeneration. In response to changes in their environment or physiological state, cells undergo coordinated metabolic switching that is necessary to execute biosynthetic demands of growth and repair. In this Review, we discuss how metabolic switches represent an evolutionarily conserved mechanism that orchestrates tissue development and regeneration, allowing cells to adapt rapidly to changing conditions during development and postnatally. We further explore the dynamic interplay between metabolism and how it is not only an output, but also a driver of cellular functions, such as cell proliferation and maturation. Finally, we underscore the epigenetic and cellular mechanisms by which metabolic switches mediate biosynthetic needs during development and regeneration, and how understanding these mechanisms is important for advancing our knowledge of tissue development and devising new strategies to promote tissue regeneration.
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Affiliation(s)
- Ahmed I. Mahmoud
- Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
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8
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Madden MZ, Ye X, Chi C, Fisher EL, Wolf MM, Needle GA, Bader JE, Patterson AR, Reinfeld BI, Landis MD, Hathaway ES, Muka JE, O’Neil RT, Karijolich J, Philip M, Rathmell JC. Differential Effects of Glutamine Inhibition Strategies on Antitumor CD8 T Cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:563-575. [PMID: 37341499 PMCID: PMC10526752 DOI: 10.4049/jimmunol.2200715] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 06/02/2023] [Indexed: 06/22/2023]
Abstract
Activated T cells undergo metabolic reprogramming to meet anabolic, differentiation, and functional demands. Glutamine supports many processes in activated T cells, and inhibition of glutamine metabolism alters T cell function in autoimmune disease and cancer. Multiple glutamine-targeting molecules are under investigation, yet the precise mechanisms of glutamine-dependent CD8 T cell differentiation remain unclear. We show that distinct strategies of glutamine inhibition by glutaminase-specific inhibition with small molecule CB-839, pan-glutamine inhibition with 6-diazo-5-oxo-l-norleucine (DON), or by glutamine-depleted conditions (No Q) produce distinct metabolic differentiation trajectories in murine CD8 T cells. T cell activation with CB-839 treatment had a milder effect than did DON or No Q treatment. A key difference was that CB-839-treated cells compensated with increased glycolytic metabolism, whereas DON and No Q-treated cells increased oxidative metabolism. However, all glutamine treatment strategies elevated CD8 T cell dependence on glucose metabolism, and No Q treatment caused adaptation toward reduced glutamine dependence. DON treatment reduced histone modifications and numbers of persisting cells in adoptive transfer studies, but those T cells that remained could expand normally upon secondary Ag encounter. In contrast, No Q-treated cells persisted well yet demonstrated decreased secondary expansion. Consistent with reduced persistence, CD8 T cells activated in the presence of DON had reduced ability to control tumor growth and reduced tumor infiltration in adoptive cell therapy. Overall, each approach to inhibit glutamine metabolism confers distinct effects on CD8 T cells and highlights that targeting the same pathway in different ways can elicit opposing metabolic and functional outcomes.
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Affiliation(s)
- Matthew Z. Madden
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Xiang Ye
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Channing Chi
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Emilie L. Fisher
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Melissa M. Wolf
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | | | - Jackie E. Bader
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Andrew R. Patterson
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | | | - Madelyn D. Landis
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Emma S. Hathaway
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Jason E. Muka
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Richard T. O’Neil
- Department of Veterans Affairs, Ralph H Johnson VA Medical Center and Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC
| | - John Karijolich
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN
- Vanderbilt Center for Immunobiology, Nashville, TN
| | - Mary Philip
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
- Vanderbilt Center for Immunobiology, Nashville, TN
| | - Jeffrey C. Rathmell
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN
- Vanderbilt Center for Immunobiology, Nashville, TN
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9
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Blanco LP, Kaplan MJ. Metabolic alterations of the immune system in the pathogenesis of autoimmune diseases. PLoS Biol 2023; 21:e3002084. [PMID: 37098006 PMCID: PMC10128981 DOI: 10.1371/journal.pbio.3002084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023] Open
Abstract
Systemic autoimmune diseases are characteristically associated with aberrant autoreactive innate and adaptive immune responses that lead to tissue damage and increased morbidity and mortality. Autoimmunity has been linked to alterations in the metabolic functions of immune cells (immunometabolism) and, more specifically, to mitochondrial dysfunction. Much has been written about immunometabolism in autoimmunity in general, so this Essay focuses on recent research into the role of mitochondrial dysfunction in the dysregulation of innate and adaptive immunity that is characteristic of systemic autoimmune diseases such as systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). Enhancing the understanding of mitochondrial dysregulation in autoimmunity will hopefully contribute to accelerating the development of immunomodulatory treatments for these challenging diseases.
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Affiliation(s)
- Luz P Blanco
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Mariana J Kaplan
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
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10
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Chen C, Liu T, Tang Y, Luo G, Liang G, He W. Epigenetic regulation of macrophage polarization in wound healing. BURNS & TRAUMA 2023; 11:tkac057. [PMID: 36687556 PMCID: PMC9844119 DOI: 10.1093/burnst/tkac057] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 11/16/2022] [Indexed: 06/01/2023]
Abstract
The immune microenvironment plays a critical role in regulating skin wound healing. Macrophages, the main component of infiltrating inflammatory cells, play a pivotal role in shaping the immune microenvironment in the process of skin wound healing. Macrophages comprise the classic proinflammatory M1 subtype and anti-inflammatory M2 population. In the early inflammatory phase of skin wound closure, M1-like macrophages initiate and amplify the local inflammatory response to disinfect the injured tissue. In the late tissue-repairing phase, M2 macrophages are predominant in wound tissue and limit local inflammation to promote tissue repair. The biological function of macrophages is tightly linked with epigenomic organization. Transcription factors are essential for macrophage polarization. Epigenetic modification of transcription factors determines the heterogeneity of macrophages. In contrast, transcription factors also regulate the expression of epigenetic enzymes. Both transcription factors and epigenetic enzymes form a complex network that regulates the plasticity of macrophages. Here, we describe the latest knowledge concerning the potential epigenetic mechanisms that precisely regulate the biological function of macrophages and their effects on skin wound healing.
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Affiliation(s)
| | | | - Yuanyang Tang
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Academy of Biological Engineering, Chongqing University, Chongqing, China
| | - Gaoxing Luo
- Correspondence. Gaoxing Luo, ; Guangping Liang, ; Weifeng He,
| | - Guangping Liang
- Correspondence. Gaoxing Luo, ; Guangping Liang, ; Weifeng He,
| | - Weifeng He
- Correspondence. Gaoxing Luo, ; Guangping Liang, ; Weifeng He,
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11
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Zhou L, Lin Q, Sonnenberg GF. Metabolic control of innate lymphoid cells in health and disease. Nat Metab 2022; 4:1650-1659. [PMID: 36424470 PMCID: PMC9789197 DOI: 10.1038/s42255-022-00685-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 10/13/2022] [Indexed: 11/27/2022]
Abstract
Innate lymphoid cells (ILCs) are a family of predominantly tissue-resident lymphocytes that critically orchestrate immunity, inflammation, tolerance and repair at barrier surfaces of the mammalian body. Heterogeneity among ILC subsets is comparable to that of adaptive CD4+ T helper cell counterparts, and emerging studies demonstrate that ILC biology is also dictated by cellular metabolism that adapts bioenergetic requirements during activation, proliferation or cytokine production. Accumulating evidence in mouse models and human samples indicates that ILCs exhibit profound roles in shaping states of metabolic health and disease. Here we summarize and discuss our current knowledge of the cell-intrinsic and cell-extrinsic metabolic factors controlling ILC responses, as well as highlight contributions of ILCs to organismal metabolism. It is expected that continued research in this area will advance our understanding of how to manipulate ILCs or their metabolism for therapeutic strategies that benefit human health.
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Affiliation(s)
- Lei Zhou
- Shanghai Immune Therapy Institute, Shanghai Jiaotong University School of Medicine-affiliated Renji Hospital, Shanghai, China.
| | - Qingxia Lin
- Shanghai Immune Therapy Institute, Shanghai Jiaotong University School of Medicine-affiliated Renji Hospital, Shanghai, China
| | - Gregory F Sonnenberg
- Joan and Sanford I. Weill Department of Medicine, Division of Gastroenterology & Hepatology, Department of Microbiology and Immunology, and the Jill Roberts Institute for Research in Inflammatory Bowel Disease, Weill Cornell Medicine, Cornell University, New York, NY, USA.
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12
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Xu H, Liang H. The regulation of totipotency transcription: Perspective from in vitro and in vivo totipotency. Front Cell Dev Biol 2022; 10:1024093. [DOI: 10.3389/fcell.2022.1024093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 10/13/2022] [Indexed: 11/13/2022] Open
Abstract
Totipotency represents the highest developmental potency. By definition, totipotent stem cells are capable of giving rise to all embryonic and extraembryonic cell types. In mammalian embryos, totipotency occurs around the zygotic genome activation period, which is around the 2-cell stage in mouse embryo or the 4-to 8-cell stage in human embryo. Currently, with the development of in vitro totipotent-like models and the advances in small-scale genomic methods, an in-depth mechanistic understanding of the totipotency state and regulation was enabled. In this review, we explored and summarized the current views about totipotency from various angles, including genetic and epigenetic aspects. This will hopefully formulate a panoramic view of totipotency from the available research works until now. It can also help delineate the scaffold and formulate new hypotheses on totipotency for future research works.
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13
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Ge T, Gu X, Jia R, Ge S, Chai P, Zhuang A, Fan X. Crosstalk between metabolic reprogramming and epigenetics in cancer: updates on mechanisms and therapeutic opportunities. CANCER COMMUNICATIONS (LONDON, ENGLAND) 2022; 42:1049-1082. [PMID: 36266736 PMCID: PMC9648395 DOI: 10.1002/cac2.12374] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 09/19/2022] [Accepted: 10/10/2022] [Indexed: 11/24/2022]
Abstract
Reversible, spatial, and temporal regulation of metabolic reprogramming and epigenetic homeostasis are prominent hallmarks of carcinogenesis. Cancer cells reprogram their metabolism to meet the high bioenergetic and biosynthetic demands for vigorous proliferation. Epigenetic dysregulation is a common feature of human cancers, which contributes to tumorigenesis and maintenance of the malignant phenotypes by regulating gene expression. The epigenome is sensitive to metabolic changes. Metabolism produces various metabolites that are substrates, cofactors, or inhibitors of epigenetic enzymes. Alterations in metabolic pathways and fluctuations in intermediate metabolites convey information regarding the intracellular metabolic status into the nucleus by modulating the activity of epigenetic enzymes and thus remodeling the epigenetic landscape, inducing transcriptional responses to heterogeneous metabolic requirements. Cancer metabolism is regulated by epigenetic machinery at both transcriptional and post‐transcriptional levels. Epigenetic modifiers, chromatin remodelers and non‐coding RNAs are integral contributors to the regulatory networks involved in cancer metabolism, facilitating malignant transformation. However, the significance of the close connection between metabolism and epigenetics in the context of cancer has not been fully deciphered. Thus, it will be constructive to summarize and update the emerging new evidence supporting this bidirectional crosstalk and deeply assess how the crosstalk between metabolic reprogramming and epigenetic abnormalities could be exploited to optimize treatment paradigms and establish new therapeutic options. In this review, we summarize the central mechanisms by which epigenetics and metabolism reciprocally modulate each other in cancer and elaborate upon and update the major contributions of the interplays between epigenetic aberrations and metabolic rewiring to cancer initiation and development. Finally, we highlight the potential therapeutic opportunities for hematological malignancies and solid tumors by targeting this epigenetic‐metabolic circuit. In summary, we endeavored to depict the current understanding of the coordination between these fundamental abnormalities more comprehensively and provide new perspectives for utilizing metabolic and epigenetic targets for cancer treatment.
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Affiliation(s)
- Tongxin Ge
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
| | - Xiang Gu
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
| | - Renbing Jia
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
| | - Shengfang Ge
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
| | - Peiwei Chai
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
| | - Ai Zhuang
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
| | - Xianqun Fan
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, P. R. China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, P. R. China
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14
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Seim GL, Fan J. A matter of time: temporal structure and functional relevance of macrophage metabolic rewiring. Trends Endocrinol Metab 2022; 33:345-358. [PMID: 35331615 PMCID: PMC9010376 DOI: 10.1016/j.tem.2022.02.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/21/2022] [Accepted: 02/22/2022] [Indexed: 12/24/2022]
Abstract
The response of macrophages to stimulation is a dynamic process which coordinates the orderly adoption and resolution of various immune functions. Accumulating work over the past decade has demonstrated that during the immune response macrophage metabolism is substantially rewired to support important cellular processes, including the production of bioactive molecules, intercellular communication, and the regulation of intracellular signaling and transcriptional programming. In particular, we discuss an important concept emerging from recent studies - metabolic rewiring during the immune response is temporally structured. We review the regulatory mechanisms that drive the dynamic remodeling of metabolism, and examine the functional implications of these metabolic dynamics.
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Affiliation(s)
- Gretchen L Seim
- Morgridge Institute for Research, Madison, WI, USA; Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, WI, USA
| | - Jing Fan
- Morgridge Institute for Research, Madison, WI, USA; Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, WI, USA.
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15
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Lv N, Jin S, Liang Z, Wu X, Kang Y, Su L, Dong Y, Wang B, Ma T, Shi L. PP2Cδ Controls the Differentiation and Function of Dendritic Cells Through Regulating the NSD2/mTORC2/ACLY Pathway. Front Immunol 2022; 12:751409. [PMID: 35069527 PMCID: PMC8777276 DOI: 10.3389/fimmu.2021.751409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 12/16/2021] [Indexed: 12/29/2022] Open
Abstract
Dendritic cells (DCs) are recognized as a key orchestrator of immune response and homeostasis, deregulation of which may lead to autoimmunity such as experimental autoimmune encephalomyelitis (EAE). Herein we show that the phosphatase PP2Cδ played a pivotal role in regulating DC activation and function, as PP2Cδ ablation caused aberrant maturation, activation, and Th1/Th17-priming of DCs, and hence induced onset of exacerbated EAE. Mechanistically, PP2Cδ restrained the expression of the essential subunit of mTORC2, Rictor, primarily through de-phosphorylating and proteasomal degradation of the methyltransferase NSD2 via CRL4DCAF2 E3 ligase. Loss of PP2Cδ in DCs accordingly sustained activation of the Rictor/mTORC2 pathway and boosted glycolytic and mitochondrial metabolism. Consequently, ATP-citrate lyse (ACLY) was increasingly activated and catalyzed acetyl-CoA for expression of the genes compatible with hyperactivated DCs under PP2Cδ deletion. Collectively, our findings demonstrate that PP2Cδ has an essential role in controlling DCs activation and function, which is critical for prevention of autoimmunity.
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Affiliation(s)
- Nianyin Lv
- Department of Immunology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Sufeng Jin
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China.,Key Lab of Inflammation and Immunoregulation, Hangzhou Normal University School of Medicine, Hangzhou, China
| | - Zihao Liang
- Department of Immunology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiaohui Wu
- Department of Immunology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yanhua Kang
- Department of Immunology, Nanjing University of Chinese Medicine, Nanjing, China.,Key Lab of Inflammation and Immunoregulation, Hangzhou Normal University School of Medicine, Hangzhou, China
| | - Lan Su
- Institute of Translational Medicine, Zhejiang Shuren University, Hangzhou, China
| | - Yeping Dong
- Institute of Translational Medicine, Zhejiang Shuren University, Hangzhou, China
| | - Bingwei Wang
- College of Medicine and Integrated Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Tonghui Ma
- College of Medicine and Integrated Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Liyun Shi
- Department of Immunology, Nanjing University of Chinese Medicine, Nanjing, China.,Institute of Translational Medicine, Zhejiang Shuren University, Hangzhou, China
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16
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LPS-induced lipid alterations in microglia revealed by MALDI mass spectrometry-based cell fingerprinting in neuroinflammation studies. Sci Rep 2022; 12:2908. [PMID: 35190595 PMCID: PMC8861089 DOI: 10.1038/s41598-022-06894-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 02/03/2022] [Indexed: 12/17/2022] Open
Abstract
Pathological microglia activation can promote neuroinflammation in many neurodegenerative diseases, and it has therefore emerged as a potential therapeutic target. Increasing evidence suggests alterations in lipid metabolism as modulators and indicators in microglia activation and its effector functions. Yet, how lipid dynamics in activated microglia is affected by inflammatory stimuli demands additional investigation to allow development of more effective therapies. Here, we report an extensive matrix-assisted laser desorption/ionization (MALDI) mass spectrometry (MS) whole cell fingerprinting workflow to investigate inflammation-associated lipid patterns in SIM-A9 microglial cells. By combining a platform of three synergistic MALDI MS technologies we could detect substantial differences in lipid profiles of lipopolysaccharide (LPS)- stimulated and unstimulated microglia-like cells leading to the identification of 21 potential inflammation-associated lipid markers. LPS-induced lipids in SIM-A9 microglial cells include phosphatidylcholines, lysophosphatidylcholines (LysoPC), sphingolipids, diacylglycerols and triacylglycerols. Moreover, MALDI MS-based cell lipid fingerprinting of LPS-stimulated SIM-A9 microglial cells pre-treated with the non-selective histone deacetylase inhibitor suberoylanilide hydroxamic acid revealed specific modulation of LPS-induced-glycerolipids and LysoPC(18:0) with a significant reduction of microglial inflammation response. Our study introduces MALDI MS as a complementary technology for fast and label-free investigation of stimulus-dependent changes in lipid patterns and their modulation by pharmaceutical agents.
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17
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Madden MZ, Rathmell JC. The Complex Integration of T-cell Metabolism and Immunotherapy. Cancer Discov 2021; 11:1636-1643. [PMID: 33795235 PMCID: PMC8295173 DOI: 10.1158/2159-8290.cd-20-0569] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 01/19/2021] [Accepted: 01/27/2021] [Indexed: 12/12/2022]
Abstract
Immune oncology approaches of adoptive cell therapy and immune checkpoint blockade aim to activate T cells to eliminate tumors. Normal stimulation of resting T cells induces metabolic reprogramming from catabolic and oxidative metabolism to aerobic glycolysis in effector T cells, and back to oxidative metabolism in long-lived memory cells. These metabolic reprogramming events are now appreciated to be essential aspects of T-cell function and fate. Here, we review these transitions, how they are disrupted by T-cell interactions with tumors and the tumor microenvironment, and how they can inform immune oncology to enhance T-cell function against tumors. SIGNIFICANCE: T-cell metabolism plays a central role in T-cell fate yet is altered in cancer in ways that can suppress antitumor immunity. Here, we discuss challenges and opportunities to stimulate effector T-cell metabolism and improve cancer immunotherapy.
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Affiliation(s)
- Matthew Z Madden
- Vanderbilt Center for Immunobiology, Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Jeffrey C Rathmell
- Vanderbilt Center for Immunobiology, Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee.
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18
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Morais AHDA, Aquino JDS, da Silva-Maia JK, Vale SHDL, Maciel BLL, Passos TS. Nutritional status, diet and viral respiratory infections: perspectives for severe acute respiratory syndrome coronavirus 2. Br J Nutr 2021; 125:851-862. [PMID: 32843118 PMCID: PMC7542326 DOI: 10.1017/s0007114520003311] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 08/18/2020] [Accepted: 08/18/2020] [Indexed: 12/21/2022]
Abstract
COVID-19, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), was recognised by the WHO as a pandemic in 2020. Host preparation to combat the virus is an important strategy to avoid COVID-19 severity. Thus, the relationship between eating habits, nutritional status and their effects on the immune response and further implications in viral respiratory infections is an important topic discussed in this review. Malnutrition causes the most diverse alterations in the immune system, suppressing of the immune response and increasing the susceptibility to infections such as SARS-CoV-2. On the other hand, obesity induces low-grade chronic inflammation caused by excess adiposity, which increases angiotensin-converting enzyme 2. It decreases the immune response favouring SARS-CoV-2 virulence and promoting respiratory distress syndrome. The present review highlights the importance of food choices considering their inflammatory effects, consequently increasing the viral susceptibility observed in malnutrition and obesity. Healthy eating habits, micronutrients, bioactive compounds and probiotics are strategies for COVID-19 prevention. Therefore, a diversified and balanced diet can contribute to the improvement of the immune response to viral infections such as COVID-19.
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Affiliation(s)
- Ana Heloneida de Araújo Morais
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN59078-970, Brazil
- Department of Nutrition, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN59078-970, Brazil
| | - Jailane de Souza Aquino
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Paraíba, João Pessoa, PB58050-085, Brazil
| | - Juliana Kelly da Silva-Maia
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN59078-970, Brazil
- Department of Nutrition, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN59078-970, Brazil
| | - Sancha Helena de Lima Vale
- Department of Nutrition, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN59078-970, Brazil
| | - Bruna Leal Lima Maciel
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN59078-970, Brazil
- Department of Nutrition, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN59078-970, Brazil
| | - Thaís Sousa Passos
- Department of Nutrition, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, RN59078-970, Brazil
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19
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Li Y, Wu Y, Hu Y. Metabolites in the Tumor Microenvironment Reprogram Functions of Immune Effector Cells Through Epigenetic Modifications. Front Immunol 2021; 12:641883. [PMID: 33927716 PMCID: PMC8078775 DOI: 10.3389/fimmu.2021.641883] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/15/2021] [Indexed: 12/29/2022] Open
Abstract
Cellular metabolism of both cancer and immune cells in the acidic, hypoxic, and nutrient-depleted tumor microenvironment (TME) has attracted increasing attention in recent years. Accumulating evidence has shown that cancer cells in TME could outcompete immune cells for nutrients and at the same time, producing inhibitory products that suppress immune effector cell functions. Recent progress revealed that metabolites in the TME could dysregulate gene expression patterns in the differentiation, proliferation, and activation of immune effector cells by interfering with the epigenetic programs and signal transduction networks. Nevertheless, encouraging studies indicated that metabolic plasticity and heterogeneity between cancer and immune effector cells could provide us the opportunity to discover and target the metabolic vulnerabilities of cancer cells while potentiating the anti-tumor functions of immune effector cells. In this review, we will discuss the metabolic impacts on the immune effector cells in TME and explore the therapeutic opportunities for metabolically enhanced immunotherapy.
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Affiliation(s)
- Yijia Li
- Zhuhai Institute of Translational Medicine, Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Zhuhai, China.,Biomedical Translational Research Institute, Jinan University, Guangzhou, China
| | - Yangzhe Wu
- Zhuhai Institute of Translational Medicine, Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Zhuhai, China.,Biomedical Translational Research Institute, Jinan University, Guangzhou, China
| | - Yi Hu
- Microbiology and Immunology Department, School of Medicine, Jinan University, Guangzhou, China
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20
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Zhu D, Zhao Y, Luo Y, Qian X, Zhang Z, Jiang G, Guo F. Irg1-itaconate axis protects against acute kidney injury via activation of Nrf2. Am J Transl Res 2021; 13:1155-1169. [PMID: 33841646 PMCID: PMC8014393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 12/29/2020] [Indexed: 06/12/2023]
Abstract
Acute kidney injury (AKI) is a common clinical implication with increased tissue damage, uncontrolled immune responses, and risk of mortality, in which ischemia-reperfusion injury (IRI) is one of the leading causes. As critical role for metabolic remodeling in inflammation, Irg1-itaconate axis has received much attention for its immunomodulation in the control of the inflammation. However, its role in the AKI and IRI remains unknown. Here, we found that Irg1 expression was negatively correlated with the expression of inflammatory cytokines during ischemia-reperfusion injury. And Irg1 deficiency promotes renal inflammation and ischemia-reperfusion injury in vivo. Itaconate treatment promoted the survival of WT mice from lethal ischemia and protected against renal IRI and systemic inflammation. Mechanistically, dimethyl itaconate protected renal cells from oxidative stress and prevented macrophage activation by enhancing the translocation of Nrf2 into the nuclei. Our study highlighted the importance of the Irg1-itaconate axis in the protecting against ischemia-reperfusion injury and acute kidney injury, providing potential therapeutic targets to control AKI.
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Affiliation(s)
- Dongdong Zhu
- Department of Nephrology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai, PR China
| | - Yuanyu Zhao
- Department of Organ Transplantation, Changzheng Hospital, Navy Medical UniversityShanghai, PR China
| | - Yi Luo
- Department of Organ Transplantation, Changzheng Hospital, Navy Medical UniversityShanghai, PR China
| | - Xiaoqian Qian
- Department of Nephrology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai, PR China
| | - Zhen Zhang
- Department of Urology, The Linyi People’s HospitalLinyi, Shandong Province, PR China
| | - Gengru Jiang
- Department of Nephrology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai, PR China
| | - Fengfu Guo
- Department of Urology, The Linyi People’s HospitalLinyi, Shandong Province, PR China
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21
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Abstract
T cells are an essential component of the immune system that provide antigen-specific acute and long lasting immune responses to infections and tumors, ascertain the maintenance of immunological tolerance and, on the flipside, mediate autoimmunity in a variety of diseases. The activation of T cells through antigen recognition by the T cell receptor (TCR) results in transient and sustained Ca2+ signals that are shaped by the opening of Ca2+ channels in the plasma membrane and cellular organelles. The dynamic regulation of intracellular Ca2+ concentrations controls a variety of T cell functions on the timescale of seconds to days after signal initiation. Among the more recently identified roles of Ca2+ signaling in T cells is the regulation of metabolic pathways that control the function of many T cell subsets. In this review, we discuss how Ca2+ regulates several metabolic programs in T cells such as the activation of AMPK and the PI3K-AKT-mTORC1 pathway, aerobic glycolysis, mitochondrial metabolism including tricarboxylic acid (TCA) cycle function and oxidative phosphorylation (OXPHOS), as well as lipid metabolism.
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22
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Metformin: Sentinel of the Epigenetic Landscapes That Underlie Cell Fate and Identity. Biomolecules 2020; 10:biom10050780. [PMID: 32443566 PMCID: PMC7277648 DOI: 10.3390/biom10050780] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/08/2020] [Accepted: 05/15/2020] [Indexed: 12/14/2022] Open
Abstract
The biguanide metformin is the first drug to be tested as a gerotherapeutic in the clinical trial TAME (Targeting Aging with Metformin). The current consensus is that metformin exerts indirect pleiotropy on core metabolic hallmarks of aging, such as the insulin/insulin-like growth factor 1 and AMP-activated protein kinase/mammalian Target Of Rapamycin signaling pathways, downstream of its primary inhibitory effect on mitochondrial respiratory complex I. Alternatively, but not mutually exclusive, metformin can exert regulatory effects on components of the biologic machinery of aging itself such as chromatin-modifying enzymes. An integrative metabolo-epigenetic outlook supports a new model whereby metformin operates as a guardian of cell identity, capable of retarding cellular aging by preventing the loss of the information-theoretic nature of the epigenome. The ultimate anti-aging mechanism of metformin might involve the global preservation of the epigenome architecture, thereby ensuring cell fate commitment and phenotypic outcomes despite the challenging effects of aging noise. Metformin might therefore inspire the development of new gerotherapeutics capable of preserving the epigenome architecture for cell identity. Such gerotherapeutics should replicate the ability of metformin to halt the erosion of the epigenetic landscape, mitigate the loss of cell fate commitment, delay stochastic/environmental DNA methylation drifts, and alleviate cellular senescence. Yet, it remains a challenge to confirm if regulatory changes in higher-order genomic organizers can connect the capacity of metformin to dynamically regulate the three-dimensional nature of epigenetic landscapes with the 4th dimension, the aging time.
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