51
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Luda KM, Longo J, Kitchen-Goosen SM, Duimstra LR, Ma EH, Watson MJ, Oswald BM, Fu Z, Madaj Z, Kupai A, Dickson BM, DeCamp LM, Dahabieh MS, Compton SE, Teis R, Kaymak I, Lau KH, Kelly DP, Puchalska P, Williams KS, Krawczyk CM, Lévesque D, Boisvert FM, Sheldon RD, Rothbart SB, Crawford PA, Jones RG. Ketolysis drives CD8 + T cell effector function through effects on histone acetylation. Immunity 2023; 56:2021-2035.e8. [PMID: 37516105 PMCID: PMC10528215 DOI: 10.1016/j.immuni.2023.07.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 04/07/2023] [Accepted: 07/04/2023] [Indexed: 07/31/2023]
Abstract
Environmental nutrient availability influences T cell metabolism, impacting T cell function and shaping immune outcomes. Here, we identified ketone bodies (KBs)-including β-hydroxybutyrate (βOHB) and acetoacetate (AcAc)-as essential fuels supporting CD8+ T cell metabolism and effector function. βOHB directly increased CD8+ T effector (Teff) cell cytokine production and cytolytic activity, and KB oxidation (ketolysis) was required for Teff cell responses to bacterial infection and tumor challenge. CD8+ Teff cells preferentially used KBs over glucose to fuel the tricarboxylic acid (TCA) cycle in vitro and in vivo. KBs directly boosted the respiratory capacity and TCA cycle-dependent metabolic pathways that fuel CD8+ T cell function. Mechanistically, βOHB was a major substrate for acetyl-CoA production in CD8+ T cells and regulated effector responses through effects on histone acetylation. Together, our results identify cell-intrinsic ketolysis as a metabolic and epigenetic driver of optimal CD8+ T cell effector responses.
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Affiliation(s)
- Katarzyna M Luda
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA; University of Copenhagen, Novo Nordisk Foundation Center for Basic Metabolic Research, Blegdamsvej 3B, 2200 København, Denmark
| | - Joseph Longo
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Susan M Kitchen-Goosen
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Lauren R Duimstra
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Eric H Ma
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - McLane J Watson
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Brandon M Oswald
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Zhen Fu
- Bioinformatics and Biostatistics Core, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Zachary Madaj
- Bioinformatics and Biostatistics Core, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Ariana Kupai
- Department of Epigenetics, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Bradley M Dickson
- Department of Epigenetics, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Lisa M DeCamp
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Michael S Dahabieh
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Shelby E Compton
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Robert Teis
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Irem Kaymak
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Kin H Lau
- Bioinformatics and Biostatistics Core, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Daniel P Kelly
- Cardiovascular Institute and Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Patrycja Puchalska
- Department of Medicine, Division of Molecular Medicine, University of Minnesota, Minneapolis, MN 55455, USA
| | - Kelsey S Williams
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Connie M Krawczyk
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Dominique Lévesque
- Department of Anatomy and Cell Biology, Université de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada
| | - François-Michel Boisvert
- Department of Anatomy and Cell Biology, Université de Sherbrooke, Sherbrooke, QC J1E 4K8, Canada
| | - Ryan D Sheldon
- Mass Spectrometry Core, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Scott B Rothbart
- Department of Epigenetics, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Peter A Crawford
- Department of Medicine, Division of Molecular Medicine, University of Minnesota, Minneapolis, MN 55455, USA; Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Russell G Jones
- Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA.
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52
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Zhang L, Liu X, Mao J, Sun Y, Gao Y, Bai J, Jiang P. Porcine reproductive and respiratory syndrome virus-mediated lactate facilitates virus replication by targeting MAVS. Vet Microbiol 2023; 284:109846. [PMID: 37586149 DOI: 10.1016/j.vetmic.2023.109846] [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: 06/13/2023] [Revised: 08/06/2023] [Accepted: 08/07/2023] [Indexed: 08/18/2023]
Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) is one of the most important causative agents in the pig industry worldwide, causing reproductive failure in sows and respiratory problems in growing pigs. Glucose metabolism is a major pathway for energy production and interacts with many cellular processes, such as innate immunity response. It is unclear whether PRRSV infection can use the glucose metabolic pathway to generate immune escape in favor of viral replication. Here, we found that high glucose promotes PRRSV replication and glycolysis, and inhibits poly(I:C)-induced RLR signaling. Conversely, inhibition of the glycolysis pathway significantly promoted poly(I:C)-induced RLR signaling and inhibited PRRSV replication, suggesting that glycolysis promotes PRRSV replication by inhibiting interferon signaling. Furthermore, PRRSV promotes glycolysis to produce lactate, which acts as a key metabolite to promote viral replication by inhibiting RLR signaling by targeting MAVS. And the glycolytic inhibitors targeting HK2 and LDHA in glycolysis could inhibit PRRSV replication. Taken together, these findings suggested that PRRSV infection promotes glycolysis to produce lactate, which targets MAVS to inhibit RLR signaling and thus promote viral replication. Our findings provide an insight into the pathogenesis of PRRSV and offer a theoretical basis for further development of antiviral therapeutic targets.
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Affiliation(s)
- Lujie Zhang
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, MOE International Joint Collaborative Research Laboratory for Animal Health & Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Xing Liu
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, MOE International Joint Collaborative Research Laboratory for Animal Health & Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Jian Mao
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, MOE International Joint Collaborative Research Laboratory for Animal Health & Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Yangyang Sun
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, MOE International Joint Collaborative Research Laboratory for Animal Health & Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Yanni Gao
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, MOE International Joint Collaborative Research Laboratory for Animal Health & Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Juan Bai
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, MOE International Joint Collaborative Research Laboratory for Animal Health & Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou 225009, PR China
| | - Ping Jiang
- Key Laboratory of Animal Diseases Diagnostic and Immunology, Ministry of Agriculture, MOE International Joint Collaborative Research Laboratory for Animal Health & Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou 225009, PR China.
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53
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Tournier B, Bouteldja F, Amossé Q, Nicolaides A, Duarte Azevedo M, Tenenbaum L, Garibotto V, Ceyzériat K, Millet P. 18 kDa Translocator Protein TSPO Is a Mediator of Astrocyte Reactivity. ACS OMEGA 2023; 8:31225-31236. [PMID: 37663488 PMCID: PMC10468775 DOI: 10.1021/acsomega.3c03368] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 08/01/2023] [Indexed: 09/05/2023]
Abstract
An increase in astrocyte reactivity has been described in Alzheimer's disease and seems to be related to the presence of a pro-inflammatory environment. Reactive astrocytes show an increase in the density of the 18 kDa translocator protein (TSPO), but TSPO involvement in astrocyte functions remains poorly understood. The goal of this study was to better characterize the mechanisms leading to the increase in TSPO under inflammatory conditions and the associated consequences. For this purpose, the C6 astrocytic cell line was used in the presence of lipopolysaccharide (LPS) or TSPO overexpression mediated by the transfection of a plasmid encoding TSPO. The results show that nonlethal doses of LPS induced TSPO expression at mRNA and protein levels through a STAT3-dependent mechanism and increased the number of mitochondria per cell. LPS stimulated reactive oxygen species (ROS) production and decreased glucose consumption (quantified by the [18F]FDG uptake), and these effects were diminished by FEPPA, a TSPO antagonist. The transfection-mediated overexpression of TSPO induced ROS production, and this effect was blocked by FEPPA. In addition, a synergistic effect of overexpression of TSPO and LPS on ROS production was observed. These data show that the increase of TSPO in astrocytic cells is involved in the regulation of glucose metabolism and in the pro-inflammatory response. These data suggest that the overexpression of TSPO by astrocytes in Alzheimer's disease would have rather deleterious effects by promoting the pro-inflammatory response.
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Affiliation(s)
- Benjamin
B. Tournier
- Department
of Psychiatry, University Hospitals of Geneva, Geneva 1206, Switzerland
- Department
of Psychiatry, University of Geneva, Geneva 1211, Switzerland
| | - Farha Bouteldja
- Department
of Psychiatry, University of Geneva, Geneva 1211, Switzerland
| | - Quentin Amossé
- Department
of Psychiatry, University of Geneva, Geneva 1211, Switzerland
| | - Alekos Nicolaides
- Department
of Psychiatry, University of Geneva, Geneva 1211, Switzerland
| | - Marcelo Duarte Azevedo
- Laboratory
of Cellular and Molecular Neurotherapies, Center for Neuroscience
Research, Clinical Neuroscience Department, Lausanne University Hospital, Lausanne 1011, Switzerland
| | - Liliane Tenenbaum
- Laboratory
of Cellular and Molecular Neurotherapies, Center for Neuroscience
Research, Clinical Neuroscience Department, Lausanne University Hospital, Lausanne 1011, Switzerland
| | - Valentina Garibotto
- Division
of Nuclear Medicine, Diagnostic Department, University Hospitals of Geneva, Geneva 1206, Switzerland
- CIBM
Center for BioMedical Imaging; NIMTLab, Faculty of Medicine, University of Geneva, Geneva 1211, Switzerland
| | - Kelly Ceyzériat
- Department
of Psychiatry, University Hospitals of Geneva, Geneva 1206, Switzerland
- Department
of Psychiatry, University of Geneva, Geneva 1211, Switzerland
- Division
of Nuclear Medicine, Diagnostic Department, University Hospitals of Geneva, Geneva 1206, Switzerland
- CIBM
Center for BioMedical Imaging; NIMTLab, Faculty of Medicine, University of Geneva, Geneva 1211, Switzerland
| | - Philippe Millet
- Department
of Psychiatry, University Hospitals of Geneva, Geneva 1206, Switzerland
- Department
of Psychiatry, University of Geneva, Geneva 1211, Switzerland
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54
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Jerigova V, Zeman M, Okuliarova M. Chronodisruption of the acute inflammatory response by night lighting in rats. Sci Rep 2023; 13:14109. [PMID: 37644084 PMCID: PMC10465576 DOI: 10.1038/s41598-023-41266-3] [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: 06/29/2023] [Accepted: 08/24/2023] [Indexed: 08/31/2023] Open
Abstract
Daily oscillations are present in many aspects of the immune system, including responsiveness to infections, allowing temporal alignment of defence mechanisms with the external environment. Our study addresses whether compromised circadian timing function by dim artificial light at night (ALAN) impacts the time dependency of the acute inflammatory response in a rat model of lipopolysaccharide (LPS)-induced inflammation. After 2 weeks of exposure to low-intensity ALAN (~2 lx) or a standard light/dark cycle, male rats were challenged with LPS during either the day or the night. Dim ALAN attenuated the anorectic response when rats were stimulated during their early light phase. Next, ALAN suppressed daily variability in inflammatory changes in blood leukocyte numbers and increased the daytime sensitivity of neutrophils to the priming effects of LPS on oxidative burst. An altered renal inflammatory response in ALAN-exposed rats was manifested by stimulated T-cell infiltration into the kidney upon night-time LPS injection and the modified rhythmic response of genes involved in inflammatory pathways. Moreover, ALAN disturbed steady-state oscillations of the renal molecular clock and eliminated the inflammatory responsiveness of Rev-erbα. Altogether, dim ALAN impaired time-of-day-dependent sensitivity of inflammatory processes, pointing out a causal mechanism between light pollution and negative health effects.
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Affiliation(s)
- Viera Jerigova
- Department of Animal Physiology and Ethology, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Michal Zeman
- Department of Animal Physiology and Ethology, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Monika Okuliarova
- Department of Animal Physiology and Ethology, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 842 15, Bratislava, Slovakia.
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55
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Mulik S, Berber E, Sehrawat S, Rouse BT. Controlling viral inflammatory lesions by rebalancing immune response patterns. Front Immunol 2023; 14:1257192. [PMID: 37671156 PMCID: PMC10475736 DOI: 10.3389/fimmu.2023.1257192] [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: 07/12/2023] [Accepted: 08/07/2023] [Indexed: 09/07/2023] Open
Abstract
In this review, we discuss a variety of immune modulating approaches that could be used to counteract tissue-damaging viral immunoinflammatory lesions which typify many chronic viral infections. We make the point that in several viral infections the lesions can be largely the result of one or more aspects of the host response mediating the cell and tissue damage rather than the virus itself being directly responsible. However, within the reactive inflammatory lesions along with the pro-inflammatory participants there are also other aspects of the host response that may be acting to constrain the activity of the damaging components and are contributing to resolution. This scenario should provide the prospect of rebalancing the contributions of different host responses and hence diminish or even fully control the virus-induced lesions. We identify several aspects of the host reactions that influence the pattern of immune responsiveness and describe approaches that have been used successfully, mainly in model systems, to modulate the activity of damaging participants and which has led to lesion control. We emphasize examples where such therapies are, or could be, translated for practical use in the clinic to control inflammatory lesions caused by viral infections.
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Affiliation(s)
- Sachin Mulik
- Center for Biomedical Research, The University of Texas Health Science Center at Tyler, Tyler, TX, United States
| | - Engin Berber
- Infection Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Sharvan Sehrawat
- Indian Institute of Science Education and Research, Department of Biological Sciences, Mohali, Punjab, India
| | - Barry Tyrrell Rouse
- College of Veterinary Medicine, University of Tennessee, Knoxville, TN, United States
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56
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Gauthier T, Yao C, Dowdy T, Jin W, Lim YJ, Patiño LC, Liu N, Ohlemacher SI, Bynum A, Kazmi R, Bewley CA, Mitrovic M, Martin D, Morell RJ, Eckhaus M, Larion M, Tussiwand R, O’Shea J, Chen W. TGF-β uncouples glycolysis and inflammation in macrophages and controls survival during sepsis. Sci Signal 2023; 16:eade0385. [PMID: 37552767 PMCID: PMC11145950 DOI: 10.1126/scisignal.ade0385] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 07/14/2023] [Indexed: 08/10/2023]
Abstract
Changes in metabolism of macrophages are required to sustain macrophage activation in response to different stimuli. We showed that the cytokine TGF-β (transforming growth factor-β) regulates glycolysis in macrophages independently of inflammatory cytokine production and affects survival in mouse models of sepsis. During macrophage activation, TGF-β increased the expression and activity of the glycolytic enzyme PFKL (phosphofructokinase-1 liver type) and promoted glycolysis but suppressed the production of proinflammatory cytokines. The increase in glycolysis was mediated by an mTOR-c-MYC-dependent pathway, whereas the inhibition of cytokine production was due to activation of the transcriptional coactivator SMAD3 and suppression of the activity of the proinflammatory transcription factors AP-1, NF-κB, and STAT1. In mice with LPS-induced endotoxemia and experimentally induced sepsis, the TGF-β-induced enhancement in macrophage glycolysis led to decreased survival, which was associated with increased blood coagulation. Analysis of septic patient cohorts revealed that the expression of PFKL, TGFBRI (which encodes a TGF-β receptor), and F13A1 (which encodes a coagulation factor) in myeloid cells positively correlated with COVID-19 disease. Thus, these results suggest that TGF-β is a critical regulator of macrophage metabolism and could be a therapeutic target in patients with sepsis.
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Affiliation(s)
- Thierry Gauthier
- Mucosal Immunology Section, National Institutes of Dental and Craniofacial Research (NIDCR), National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Chen Yao
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Tyrone Dowdy
- Neuro-Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Wenwen Jin
- Mucosal Immunology Section, National Institutes of Dental and Craniofacial Research (NIDCR), National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Yun-Ji Lim
- Mucosal Immunology Section, National Institutes of Dental and Craniofacial Research (NIDCR), National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Liliana C. Patiño
- Mucosal Immunology Section, National Institutes of Dental and Craniofacial Research (NIDCR), National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Na Liu
- Mucosal Immunology Section, National Institutes of Dental and Craniofacial Research (NIDCR), National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Shannon I. Ohlemacher
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Andrew Bynum
- Mucosal Immunology Section, National Institutes of Dental and Craniofacial Research (NIDCR), National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Rida Kazmi
- Mucosal Immunology Section, National Institutes of Dental and Craniofacial Research (NIDCR), National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Carole A. Bewley
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Mladen Mitrovic
- Immune Regulation Unit, National Institutes of Dental and Craniofacial Research (NIDCR), National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Daniel Martin
- Genomics and Computational Biology Core, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Robert J. Morell
- Genomics and Computational Biology Core, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Michael Eckhaus
- Division of Veterinary Resources, Pathology Service, National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Mioara Larion
- Neuro-Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - Roxane Tussiwand
- Immune Regulation Unit, National Institutes of Dental and Craniofacial Research (NIDCR), National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - John O’Shea
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA, 20892
| | - WanJun Chen
- Mucosal Immunology Section, National Institutes of Dental and Craniofacial Research (NIDCR), National Institutes of Health, Bethesda, Maryland, USA, 20892
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Vankrunkelsven W, Thiessen S, Derde S, Vervoort E, Derese I, Pintelon I, Matheussen H, Jans A, Goossens C, Langouche L, Van den Berghe G, Vanhorebeek I. Development of muscle weakness in a mouse model of critical illness: does fibroblast growth factor 21 play a role? Skelet Muscle 2023; 13:12. [PMID: 37537627 PMCID: PMC10401744 DOI: 10.1186/s13395-023-00320-4] [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: 01/10/2023] [Accepted: 06/09/2023] [Indexed: 08/05/2023] Open
Abstract
BACKGROUND Critical illness is hallmarked by severe stress and organ damage. Fibroblast growth factor 21 (FGF21) has been shown to rise during critical illness. FGF21 is a pleiotropic hormone that mediates adaptive responses to tissue injury and repair in various chronic pathological conditions. Animal studies have suggested that the critical illness-induced rise in FGF21 may to a certain extent protect against acute lung, liver, kidney and brain injury. However, FGF21 has also been shown to mediate fasting-induced loss of muscle mass and force. Such loss of muscle mass and force is a frequent problem of critically ill patients, associated with adverse outcome. In the present study, we therefore investigated whether the critical illness-induced acute rise in FGF21 is muscle-protective or rather contributes to the pathophysiology of critical illness-induced muscle weakness. METHODS In a catheterised mouse model of critical illness induced by surgery and sepsis, we first assessed the effects of genetic FGF21 inactivation, and hence the inability to acutely increase FGF21, on survival, body weight, muscle wasting and weakness, and markers of muscle cellular stress and dysfunction in acute (30 h) and prolonged (5 days) critical illness. Secondly, we assessed whether any effects were mirrored by supplementing an FGF21 analogue (LY2405319) in prolonged critical illness. RESULTS FGF21 was not required for survival of sepsis. Genetic FGF21 inactivation aggravated the critical illness-induced body weight loss (p = 0.0003), loss of muscle force (p = 0.03) and shift to smaller myofibers. This was accompanied by a more pronounced rise in markers of endoplasmic reticulum stress in muscle, without effects on impairments in mitochondrial respiratory chain enzyme activities or autophagy activation. Supplementing critically ill mice with LY2405319 did not affect survival, muscle force or weight, or markers of muscle cellular stress/dysfunction. CONCLUSIONS Endogenous FGF21 is not required for sepsis survival, but may partially protect muscle force and may reduce cellular stress in muscle. Exogenous FGF21 supplementation failed to improve muscle force or cellular stress, not supporting the clinical applicability of FGF21 supplementation to protect against muscle weakness during critical illness.
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Affiliation(s)
- Wouter Vankrunkelsven
- Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Steven Thiessen
- Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Sarah Derde
- Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Ellen Vervoort
- Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Inge Derese
- Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Isabel Pintelon
- Laboratory of Cell Biology and Histology, University of Antwerp, Antwerp, Belgium
| | - Hanne Matheussen
- Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Alexander Jans
- Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Chloë Goossens
- Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Lies Langouche
- Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Greet Van den Berghe
- Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium
| | - Ilse Vanhorebeek
- Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, B-3000, Leuven, Belgium.
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58
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Muniz-Santos R, Lucieri-Costa G, de Almeida MAP, Moraes-de-Souza I, Brito MADSM, Silva AR, Gonçalves-de-Albuquerque CF. Lipid oxidation dysregulation: an emerging player in the pathophysiology of sepsis. Front Immunol 2023; 14:1224335. [PMID: 37600769 PMCID: PMC10435884 DOI: 10.3389/fimmu.2023.1224335] [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: 05/17/2023] [Accepted: 06/30/2023] [Indexed: 08/22/2023] Open
Abstract
Sepsis is a life-threatening organ dysfunction caused by abnormal host response to infection. Millions of people are affected annually worldwide. Derangement of the inflammatory response is crucial in sepsis pathogenesis. However, metabolic, coagulation, and thermoregulatory alterations also occur in patients with sepsis. Fatty acid mobilization and oxidation changes may assume the role of a protagonist in sepsis pathogenesis. Lipid oxidation and free fatty acids (FFAs) are potentially valuable markers for sepsis diagnosis and prognosis. Herein, we discuss inflammatory and metabolic dysfunction during sepsis, focusing on fatty acid oxidation (FAO) alterations in the liver and muscle (skeletal and cardiac) and their implications in sepsis development.
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Affiliation(s)
- Renan Muniz-Santos
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Giovanna Lucieri-Costa
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Matheus Augusto P. de Almeida
- Neuroscience Graduate Program, Federal Fluminense University, Niteroi, Brazil
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Isabelle Moraes-de-Souza
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Adriana Ribeiro Silva
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Cassiano Felippe Gonçalves-de-Albuquerque
- Laboratory of Immunopharmacology, Department of Physiology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
- Neuroscience Graduate Program, Federal Fluminense University, Niteroi, Brazil
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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59
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Li K, Wei X, Li K, Zhang Q, Zhang J, Wang D, Yang J. Dietary restriction to optimize T cell immunity is an ancient survival strategy conserved in vertebrate evolution. Cell Mol Life Sci 2023; 80:219. [PMID: 37470873 PMCID: PMC11071854 DOI: 10.1007/s00018-023-04865-x] [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: 01/19/2023] [Revised: 07/07/2023] [Accepted: 07/08/2023] [Indexed: 07/21/2023]
Abstract
Recent advances highlight a key role of transient fasting in optimizing immunity of human and mouse. However, it remains unknown whether this strategy is independently acquired by mammals during evolution or instead represents gradually evolved functions common to vertebrates. Using a tilapia model, we report that T cells are the main executors of the response of the immune system to fasting and that dietary restriction bidirectionally modulates T cell immunity. Long-term fasting impaired T cell immunity by inducing intense autophagy, apoptosis, and aberrant inflammation. However, transient dietary restriction triggered moderate autophagy to optimize T cell response by maintaining homeostasis, alleviating inflammation and tissue damage, as well as enhancing T cell activation, proliferation and function. Furthermore, AMPK is the central hub linking fasting and autophagy-controlled T cell immunity in tilapia. Our findings demonstrate that dietary restriction to optimize immunity is an ancient strategy conserved in vertebrate evolution, providing novel perspectives for understanding the adaptive evolution of T cell response.
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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
| | - Xiumei Wei
- 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
| | - Qian Zhang
- 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
| | - Ding Wang
- 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, China.
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60
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Kleinehr J, Schöfbänker M, Daniel K, Günl F, Mohamed FF, Janowski J, Brunotte L, Boergeling Y, Liebmann M, Behrens M, Gerdemann A, Klotz L, Esselen M, Humpf HU, Ludwig S, Hrincius ER. Glycolytic interference blocks influenza A virus propagation by impairing viral polymerase-driven synthesis of genomic vRNA. PLoS Pathog 2023; 19:e1010986. [PMID: 37440521 DOI: 10.1371/journal.ppat.1010986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 06/10/2023] [Indexed: 07/15/2023] Open
Abstract
Influenza A virus (IAV), like any other virus, provokes considerable modifications of its host cell's metabolism. This includes a substantial increase in the uptake as well as the metabolization of glucose. Although it is known for quite some time that suppression of glucose metabolism restricts virus replication, the exact molecular impact on the viral life cycle remained enigmatic so far. Using 2-deoxy-d-glucose (2-DG) we examined how well inhibition of glycolysis is tolerated by host cells and which step of the IAV life cycle is affected. We observed that effects induced by 2-DG are reversible and that cells can cope with relatively high concentrations of the inhibitor by compensating the loss of glycolytic activity by upregulating other metabolic pathways. Moreover, mass spectrometry data provided information on various metabolic modifications induced by either the virus or agents interfering with glycolysis. In the presence of 2-DG viral titers were significantly reduced in a dose-dependent manner. The supplementation of direct or indirect glycolysis metabolites led to a partial or almost complete reversion of the inhibitory effect of 2-DG on viral growth and demonstrated that indeed the inhibition of glycolysis and not of N-linked glycosylation was responsible for the observed phenotype. Importantly, we could show via conventional and strand-specific qPCR that the treatment with 2-DG led to a prolonged phase of viral mRNA synthesis while the accumulation of genomic vRNA was strongly reduced. At the same time, minigenome assays showed no signs of a general reduction of replicative capacity of the viral polymerase. Therefore, our data suggest that the significant reduction in IAV replication by glycolytic interference occurs mainly due to an impairment of the dynamic regulation of the viral polymerase which conveys the transition of the enzyme's function from transcription to replication.
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Affiliation(s)
- Jens Kleinehr
- Institute of Virology Muenster (IVM), Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Michael Schöfbänker
- Institute of Virology Muenster (IVM), Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Katharina Daniel
- Institute of Virology Muenster (IVM), Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Franziska Günl
- Institute of Virology Muenster (IVM), Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Fakry Fahmy Mohamed
- Institute of Virology Muenster (IVM), Westfaelische Wilhelms-University Muenster, Muenster, Germany
- Department of Virology, Faculty of Veterinary Medicine, Zagazig University, Sharkia, Egypt
| | - Josua Janowski
- Institute of Virology Muenster (IVM), Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Linda Brunotte
- Institute of Virology Muenster (IVM), Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Yvonne Boergeling
- Institute of Virology Muenster (IVM), Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Marie Liebmann
- Department of Neurology with Institute of Translational Neurology, University Hospital Muenster, Muenster, Germany
| | - Matthias Behrens
- Institute of Food Chemistry, Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Andrea Gerdemann
- Institute of Food Chemistry, Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Luisa Klotz
- Department of Neurology with Institute of Translational Neurology, University Hospital Muenster, Muenster, Germany
| | - Melanie Esselen
- Institute of Food Chemistry, Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Hans-Ulrich Humpf
- Institute of Food Chemistry, Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Stephan Ludwig
- Institute of Virology Muenster (IVM), Westfaelische Wilhelms-University Muenster, Muenster, Germany
| | - Eike R Hrincius
- Institute of Virology Muenster (IVM), Westfaelische Wilhelms-University Muenster, Muenster, Germany
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61
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Nagai M, Moriyama M, Ishii C, Mori H, Watanabe H, Nakahara T, Yamada T, Ishikawa D, Ishikawa T, Hirayama A, Kimura I, Nagahara A, Naito T, Fukuda S, Ichinohe T. High body temperature increases gut microbiota-dependent host resistance to influenza A virus and SARS-CoV-2 infection. Nat Commun 2023; 14:3863. [PMID: 37391427 PMCID: PMC10313692 DOI: 10.1038/s41467-023-39569-0] [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: 07/14/2022] [Accepted: 06/20/2023] [Indexed: 07/02/2023] Open
Abstract
Fever is a common symptom of influenza and coronavirus disease 2019 (COVID-19), yet its physiological role in host resistance to viral infection remains less clear. Here, we demonstrate that exposure of mice to the high ambient temperature of 36 °C increases host resistance to viral pathogens including influenza virus and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). High heat-exposed mice increase basal body temperature over 38 °C to enable more bile acids production in a gut microbiota-dependent manner. The gut microbiota-derived deoxycholic acid (DCA) and its plasma membrane-bound receptor Takeda G-protein-coupled receptor 5 (TGR5) signaling increase host resistance to influenza virus infection by suppressing virus replication and neutrophil-dependent tissue damage. Furthermore, the DCA and its nuclear farnesoid X receptor (FXR) agonist protect Syrian hamsters from lethal SARS-CoV-2 infection. Moreover, we demonstrate that certain bile acids are reduced in the plasma of COVID-19 patients who develop moderate I/II disease compared with the minor severity of illness group. These findings implicate a mechanism by which virus-induced high fever increases host resistance to influenza virus and SARS-CoV-2 in a gut microbiota-dependent manner.
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Affiliation(s)
- Minami Nagai
- Division of Viral Infection, Department of Infectious Disease Control, International Research Center for Infectious Diseases, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Miyu Moriyama
- Division of Viral Infection, Department of Infectious Disease Control, International Research Center for Infectious Diseases, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Chiharu Ishii
- Institute for Advanced Biosciences, Keio University, Yamagata, Japan
| | - Hirotake Mori
- Department of General Medicine, Juntendo University Faculty of Medicine, Tokyo, Japan
| | | | | | - Takuji Yamada
- Metagen Therapeutics, Inc., Yamagata, Japan
- Department of Life Science and Technology, Tokyo Institute of Technology, Tokyo, Japan
| | - Dai Ishikawa
- Metagen Therapeutics, Inc., Yamagata, Japan
- Laboratory for Regenerative Microbiology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Gastroenterology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Takamasa Ishikawa
- Institute for Advanced Biosciences, Keio University, Yamagata, Japan
| | - Akiyoshi Hirayama
- Institute for Advanced Biosciences, Keio University, Yamagata, Japan
| | - Ikuo Kimura
- Laboratory of Molecular Neurobiology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- Department of Applied Biological Science, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Akihito Nagahara
- Laboratory for Regenerative Microbiology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Gastroenterology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Toshio Naito
- Department of General Medicine, Juntendo University Faculty of Medicine, Tokyo, Japan.
| | - Shinji Fukuda
- Institute for Advanced Biosciences, Keio University, Yamagata, Japan.
- Metagen Therapeutics, Inc., Yamagata, Japan.
- Laboratory for Regenerative Microbiology, Juntendo University Graduate School of Medicine, Tokyo, Japan.
- Gut Environmental Design Group, Kanagawa Institute of Industrial Science and Technology, Kanagawa, Japan.
- Transborder Medical Research Center, University of Tsukuba, Ibaraki, Japan.
| | - Takeshi Ichinohe
- Division of Viral Infection, Department of Infectious Disease Control, International Research Center for Infectious Diseases, Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
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62
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Hussain I, Sureshkumar HK, Bauer M, Rubio I. Starvation Protects Hepatocytes from Inflammatory Damage through Paradoxical mTORC1 Signaling. Cells 2023; 12:1668. [PMID: 37371138 DOI: 10.3390/cells12121668] [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: 05/24/2023] [Revised: 06/12/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Background and aims: Sepsis-related liver failure is associated with a particularly unfavorable clinical outcome. Calorie restriction is a well-established factor that can increase tissue resilience, protect against liver failure and improve outcome in preclinical models of bacterial sepsis. However, the underlying molecular basis is difficult to investigate in animal studies and remains largely unknown. METHODS We have used an immortalized hepatocyte line as a model of the liver parenchyma to uncover the role of caloric restriction in the resilience of hepatocytes to inflammatory cell damage. In addition, we applied genetic and pharmacological approaches to investigate the contribution of the three major intracellular nutrient/energy sensor systems, AMPK, mTORC1 and mTORC2, in this context. RESULTS We demonstrate that starvation reliably protects hepatocytes from cellular damage caused by pro-inflammatory cytokines. While the major nutrient- and energy-related signaling pathways AMPK, mTORC2/Akt and mTORC1 responded to caloric restriction as expected, mTORC1 was paradoxically activated by inflammatory stress in starved, energy-deprived hepatocytes. Pharmacological inhibition of mTORC1 or genetic silencing of the mTORC1 scaffold Raptor, but not its mTORC2 counterpart Rictor, abrogated the protective effect of starvation and exacerbated inflammation-induced cell death. Remarkably, mTORC1 activation in starved hepatocytes was uncoupled from the regulation of autophagy, but crucial for sustained protein synthesis in starved resistant cells. CONCLUSIONS AMPK engagement and paradoxical mTORC1 activation and signaling mediate protection against pro-inflammatory stress exerted by caloric restriction in hepatocytes.
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Affiliation(s)
- Iqra Hussain
- Department for Anesthesiology & Intensive Care Medicine, Jena University Hospital, Member of the Leibniz Center for Photonics in Infection Research (LPI), 07747 Jena, Germany
| | - Harini K Sureshkumar
- Department for Anesthesiology & Intensive Care Medicine, Jena University Hospital, Member of the Leibniz Center for Photonics in Infection Research (LPI), 07747 Jena, Germany
| | - Michael Bauer
- Department for Anesthesiology & Intensive Care Medicine, Jena University Hospital, Member of the Leibniz Center for Photonics in Infection Research (LPI), 07747 Jena, Germany
- Integrated Research and Treatment Center, Center for Sepsis Control and Care, Jena University Hospital, 07747 Jena, Germany
| | - Ignacio Rubio
- Department for Anesthesiology & Intensive Care Medicine, Jena University Hospital, Member of the Leibniz Center for Photonics in Infection Research (LPI), 07747 Jena, Germany
- Integrated Research and Treatment Center, Center for Sepsis Control and Care, Jena University Hospital, 07747 Jena, Germany
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63
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Lin C, Jyotaki M, Quinlan J, Feng S, Zhou M, Jiang P, Matsumoto I, Huang L, Ninomiya Y, Margolskee RF, Reed DR, Wang H. Lipopolysaccharide increases bitter taste sensitivity via epigenetic changes in Tas2r gene clusters. iScience 2023; 26:106920. [PMID: 37283808 PMCID: PMC10239704 DOI: 10.1016/j.isci.2023.106920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 02/27/2023] [Accepted: 05/15/2023] [Indexed: 06/08/2023] Open
Abstract
T2R bitter receptors, encoded by Tas2r genes, are not only critical for bitter taste signal transduction but also important for defense against bacteria and parasites. However, little is known about whether and how Tas2r gene expression are regulated. Here, we show that in an inflammation model mimicking bacterial infection using lipopolysaccharide, the expression of many Tas2rs was significantly upregulated and mice displayed markedly increased neural and behavioral responses to bitter compounds. Using single-cell assays for transposase-accessible chromatin with sequencing (scATAC-seq), we found that the chromatin accessibility of Tas2rs was highly celltype specific and lipopolysaccharide increased the accessibility of many Tas2rs. scATAC-seq also revealed substantial chromatin remodeling in immune response genes in taste tissue stem cells, suggesting potential long-lasting effects. Together, our results suggest an epigenetic mechanism connecting inflammation, Tas2r gene regulation, and altered bitter taste, which may explain heightened bitter taste that can occur with infections and cancer treatments.
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Affiliation(s)
- Cailu Lin
- Monell Chemical Senses Center, 3500 Market St., Philadelphia, PA 19104, USA
| | - Masafumi Jyotaki
- Monell Chemical Senses Center, 3500 Market St., Philadelphia, PA 19104, USA
| | - John Quinlan
- Monell Chemical Senses Center, 3500 Market St., Philadelphia, PA 19104, USA
| | - Shan Feng
- Monell Chemical Senses Center, 3500 Market St., Philadelphia, PA 19104, USA
| | - Minliang Zhou
- Monell Chemical Senses Center, 3500 Market St., Philadelphia, PA 19104, USA
| | - Peihua Jiang
- Monell Chemical Senses Center, 3500 Market St., Philadelphia, PA 19104, USA
| | - Ichiro Matsumoto
- Monell Chemical Senses Center, 3500 Market St., Philadelphia, PA 19104, USA
| | - Liquan Huang
- Monell Chemical Senses Center, 3500 Market St., Philadelphia, PA 19104, USA
- Institute of Cellular and Developmental Biology, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Yuzo Ninomiya
- Monell Chemical Senses Center, 3500 Market St., Philadelphia, PA 19104, USA
- Division of Sensory Physiology, Research and Development Center for Five-Sense Device, Kyushu University, Fukuoka, Japan
- Okayama University, Okayama, Japan
- Oral Science Research Center, Tokyo Dental College, Tokyo, Japan
| | | | - Danielle R. Reed
- Monell Chemical Senses Center, 3500 Market St., Philadelphia, PA 19104, USA
| | - Hong Wang
- Monell Chemical Senses Center, 3500 Market St., Philadelphia, PA 19104, USA
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64
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Dong Z, Ma J, Qiu J, Ren Q, Shan Q, Duan X, Li G, Zuo YY, Qi Y, Liu Y, Liu G, Lynch I, Fang M, Liu S. Airborne fine particles drive H1N1 viruses deep into the lower respiratory tract and distant organs. SCIENCE ADVANCES 2023; 9:eadf2165. [PMID: 37294770 PMCID: PMC10256160 DOI: 10.1126/sciadv.adf2165] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 05/05/2023] [Indexed: 06/11/2023]
Abstract
Mounting data suggest that environmental pollution due to airborne fine particles (AFPs) increases the occurrence and severity of respiratory virus infection in humans. However, it is unclear whether and how interactions with AFPs alter viral infection and distribution. We report synergetic effects between various AFPs and the H1N1 virus, regulated by physicochemical properties of the AFPs. Unlike infection caused by virus alone, AFPs facilitated the internalization of virus through a receptor-independent pathway. Moreover, AFPs promoted the budding and dispersal of progeny virions, likely mediated by lipid rafts in the host plasma membrane. Infected animal models demonstrated that AFPs favored penetration of the H1N1 virus into the distal lung, and its translocation into extrapulmonary organs including the liver, spleen, and kidney, thus causing severe local and systemic disorders. Our findings revealed a key role of AFPs in driving viral infection throughout the respiratory tract and beyond. These insights entail stronger air quality management and air pollution reduction policies.
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Affiliation(s)
- Zheng Dong
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Juan Ma
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiahuang Qiu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Quanzhong Ren
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Qing’e Shan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, China
| | - Xuefeng Duan
- CAS Key Laboratory of Pathogenic Microbiology & Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Guangle Li
- Department of Mechanical Engineering, University of Hawaii at Mānoa, Honolulu, HI 96822, USA
| | - Yi Y. Zuo
- Department of Mechanical Engineering, University of Hawaii at Mānoa, Honolulu, HI 96822, USA
| | - Yu Qi
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yajun Liu
- Beijing Jishuitan Hospital, Peking University Health Science Center, Beijing 100035, China
| | - Guoliang Liu
- Department of Pulmonary and Critical Care Medicine, Centre for Respiratory Diseases, China-Japan Friendship Hospital, Beijing 100029, China
- National Center for Respiratory Medicine, Beijing 100029, China
| | - Iseult Lynch
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Min Fang
- CAS Key Laboratory of Pathogenic Microbiology & Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Sijin Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, China
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65
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MA F, FA C, AJ N, AA S, IA PF, LJ C, PA G. Contribution of carbohydrate-related metabolism in Herpesvirus infections. CURRENT RESEARCH IN MICROBIAL SCIENCES 2023; 4:100192. [PMID: 37273578 PMCID: PMC10238445 DOI: 10.1016/j.crmicr.2023.100192] [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] [Indexed: 06/06/2023] Open
Abstract
Human herpesviruses are enveloped viruses with double-stranded linear DNA genomes highly prevalent in the human population. These viruses are subdivided into three subfamilies, namely alphaherpesvirinae (herpes simplex virus type 1, HSV-1; herpes simplex virus type 2, HSV-2; and varicella-zoster virus, VZV), betaherpesvirinae (human cytomegalovirus, HCMV; human herpesvirus 6, HHV-6; and human herpesvirus 7, HHV-7) and gammaherpesvirinae (Epstein-Barr virus, EBV; and Kaposi's sarcoma-associated herpesvirus, KSHV). Besides encoding numerous molecular determinants to evade the host antiviral responses, these viruses also modulate cellular metabolic processes to promote their replication. Here, we review and discuss existing studies describing an interplay between carbohydrate metabolism and the replication cycle of herpesviruses, altogether highlighting potentially new molecular targets based on these interactions that could be used to block herpesvirus infections.
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Affiliation(s)
- Farías MA
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Chile
| | - Cancino FA
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Chile
| | - Navarro AJ
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Chile
| | - Soto AA
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Chile
| | - Pastén-Ferrada IA
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Chile
| | - Carreño LJ
- Millennium Institute on Immunology and Immunotherapy, Programa de Inmunología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - González PA
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Chile
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66
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Ozakman Y, Raval D, Eleftherianos I. Drosophila melanogaster Imd signaling interacts with insulin signaling and alters feeding rate upon parasitic nematode infection. Heliyon 2023; 9:e16139. [PMID: 37251825 PMCID: PMC10208921 DOI: 10.1016/j.heliyon.2023.e16139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 03/15/2023] [Accepted: 05/06/2023] [Indexed: 05/31/2023] Open
Abstract
Significant progress has been made in recent years on exploring immunometabolism, a field that integrates two processes essential for maintaining tissue and organismal homeostasis, immunity and metabolism. The nematode parasite Heterorhabditis gerrardi, its mutualistic bacteria Photorhabdus asymbiotica, and the fruit fly Drosophila melanogaster constitute a unique system to investigate the molecular basis of host immunometabolic response to nematode-bacterial complexes. In this study, we explored the contribution of the two major immune signaling pathways, Toll and Imd, to sugar metabolism in D. melanogaster larvae during infection with H. gerrardi nematodes. We infected Toll or Imd signaling loss-of-function mutant larvae with H. gerrardi nematodes and assessed larval survival ability, feeding rate, and sugar metabolism. We found no significant differences in the survival ability or levels of sugar metabolites in any of the mutant larvae when responding to H. gerrardi infection. However, we found that the Imd mutant larvae have higher feeding rate than controls during the early stages of infection. In addition, feeding rates are lower in Imd mutants relative to the control larvae as the infection progresses. We further showed that Dilp2 and Dilp3 gene expression increases in Imd mutants compared to controls early in the infection, but their expression levels decrease at later times. These findings indicate that Imd signaling activity regulates the feeding rate and Dilp2 and Dilp3 expression in D. melanogaster larvae infected with H. gerrardi. Results from this study facilitate our understanding of the link between host innate immunity and sugar metabolism in the context of infectious diseases caused by parasitic nematodes.
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Affiliation(s)
- Yaprak Ozakman
- Infection and Innate Immunity Laboratory, Department of Biological Sciences, The George Washington University, Washington DC, 20052, USA
| | - Dhaivat Raval
- Infection and Innate Immunity Laboratory, Department of Biological Sciences, The George Washington University, Washington DC, 20052, USA
| | - Ioannis Eleftherianos
- Infection and Innate Immunity Laboratory, Department of Biological Sciences, The George Washington University, Washington DC, 20052, USA
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67
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O'Brien CJO, Domingos AI. Old and "hangry" monocytes turn from friend to foe under assault. Immunity 2023; 56:747-749. [PMID: 37044065 DOI: 10.1016/j.immuni.2023.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 04/14/2023]
Abstract
Fasting is known to impact monocyte dynamics and phenotype, but the mechanics and functional significance of this response remain unclear. In this issue of Immunity, Janssen and colleagues demonstrate that fasting and re-feeding causes monocytes to re-enter the bone marrow and alter the host response to infection.
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Affiliation(s)
- Conan J O O'Brien
- Department of Physiology, Anatomy, and Genetics, University of Oxford, Oxford, OX1 3PT UK
| | - Ana I Domingos
- Department of Physiology, Anatomy, and Genetics, University of Oxford, Oxford, OX1 3PT UK.
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68
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Lim VY, Feng X, Miao R, Zehentmeier S, Ewing-Crystal N, Lee M, Tumanov AV, Oh JE, Iwasaki A, Wang A, Choi J, Pereira JP. Mature B cells and mesenchymal stem cells control emergency myelopoiesis. Life Sci Alliance 2023; 6:e202301924. [PMID: 36717247 PMCID: PMC9889502 DOI: 10.26508/lsa.202301924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 01/31/2023] Open
Abstract
Systemic inflammation halts lymphopoiesis and prioritizes myeloid cell production. How blood cell production switches from homeostasis to emergency myelopoiesis is incompletely understood. Here, we show that lymphotoxin-β receptor (LTβR) signaling in combination with TNF and IL-1 receptor signaling in bone marrow mesenchymal stem cells (MSCs) down-regulates Il7 expression to shut down lymphopoiesis during systemic inflammation. LTβR signaling in MSCs also promoted CCL2 production during systemic inflammation. Pharmacological or genetic blocking of LTβR signaling in MSCs partially enabled lymphopoiesis and reduced monocyte numbers in the spleen during systemic inflammation, which correlated with reduced survival during systemic bacterial and viral infections. Interestingly, lymphotoxin-α1β2 delivered by B-lineage cells, and specifically by mature B cells, contributed to promote Il7 down-regulation and reduce MSC lymphopoietic activity. Our studies revealed an unexpected role of LTβR signaling in MSCs and identified recirculating mature B cells as an important regulator of emergency myelopoiesis.
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Affiliation(s)
- Vivian Y Lim
- Department of Immunobiology, School of Medicine, Yale University, New Haven, CT, USA
| | - Xing Feng
- Department of Immunobiology, School of Medicine, Yale University, New Haven, CT, USA
| | - Runfeng Miao
- Department of Immunobiology, School of Medicine, Yale University, New Haven, CT, USA
| | - Sandra Zehentmeier
- Department of Immunobiology, School of Medicine, Yale University, New Haven, CT, USA
| | - Nathan Ewing-Crystal
- Department of Immunobiology, School of Medicine, Yale University, New Haven, CT, USA
| | - Moonyoung Lee
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, South Korea
| | - Alexei V Tumanov
- Department of Microbiology, Immunology and Molecular Genetics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Ji Eun Oh
- Department of Immunobiology, School of Medicine, Yale University, New Haven, CT, USA
| | - Akiko Iwasaki
- Department of Immunobiology, School of Medicine, Yale University, New Haven, CT, USA
- Howard Hughes Medical Institute, Chevy Chase, MD, USA
| | - Andrew Wang
- Department of Immunobiology, School of Medicine, Yale University, New Haven, CT, USA
- Department of Medicine (Rheumatology), School of Medicine, Yale University, New Haven, CT, USA
| | - Jungmin Choi
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, South Korea
- Department of Genetics, School of Medicine, Yale University, New Haven, CT, USA
| | - João P Pereira
- Department of Immunobiology, School of Medicine, Yale University, New Haven, CT, USA
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Wolf AJ. Peptidoglycan-induced modulation of metabolic and inflammatory responses. IMMUNOMETABOLISM (COBHAM, SURREY) 2023; 5:e00024. [PMID: 37128291 PMCID: PMC10144284 DOI: 10.1097/in9.0000000000000024] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 04/06/2023] [Indexed: 05/03/2023]
Abstract
Bacterial cell wall peptidoglycan is composed of innate immune ligands and, due to its important structural role, also regulates access to many other innate immune ligands contained within the bacteria. There is a growing body of literature demonstrating how innate immune recognition impacts the metabolic functions of immune cells and how metabolic changes are not only important to inflammatory responses but are often essential. Peptidoglycan is primarily sensed in the context of the whole bacteria during lysosomal degradation; consequently, the innate immune receptors for peptidoglycan are primarily intracellular cytosolic innate immune sensors. However, during bacterial growth, peptidoglycan fragments are shed and can be found in the bloodstream of humans and mice, not only during infection but also derived from the abundant bacterial component of the gut microbiota. These peptidoglycan fragments influence cells throughout the body and are important for regulating inflammation and whole-body metabolic function. Therefore, it is important to understand how peptidoglycan-induced signals in innate immune cells and cells throughout the body interact to regulate how the body responds to both pathogenic and nonpathogenic bacteria. This mini-review will highlight key research regarding how cellular metabolism shifts in response to peptidoglycan and how systemic peptidoglycan sensing impacts whole-body metabolic function.
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Affiliation(s)
- Andrea J. Wolf
- The Karsh Division of Gastroenterology and Hepatology, F. Widjaja Foundation Inflammatory Bowel Disease Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Research Division of Immunology, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA
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Vanderhaeghen T, Timmermans S, Eggermont M, Watts D, Vandewalle J, Wallaeys C, Nuyttens L, De Temmerman J, Hochepied T, Dewaele S, Berghe JV, Sanders N, Wielockx B, Beyaert R, Libert C. The impact of hepatocyte-specific deletion of hypoxia-inducible factors on the development of polymicrobial sepsis with focus on GR and PPARα function. Front Immunol 2023; 14:1124011. [PMID: 37006237 PMCID: PMC10060827 DOI: 10.3389/fimmu.2023.1124011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 02/27/2023] [Indexed: 03/18/2023] Open
Abstract
IntroductionPolymicrobial sepsis causes acute anorexia (loss of appetite), leading to lipolysis in white adipose tissue and proteolysis in muscle, and thus release of free fatty acids (FFAs), glycerol and gluconeogenic amino acids. Since hepatic peroxisome proliferator-activated receptor alpha (PPARα) and glucocorticoid receptor (GR) quickly lose function in sepsis, these metabolites accumulate (causing toxicity) and fail to yield energy-rich molecules such as ketone bodies (KBs) and glucose. The mechanism of PPARα and GR dysfunction is not known.Methods & resultsWe investigated the hypothesis that hypoxia and/or activation of hypoxia inducible factors (HIFs) might play a role in these issues with PPARα and GR. After cecal ligation and puncture (CLP) in mice, leading to lethal polymicrobial sepsis, bulk liver RNA sequencing illustrated the induction of the genes encoding HIF1α and HIF2α, and an enrichment of HIF-dependent gene signatures. Therefore, we generated hepatocyte-specific knock-out mice for HIF1α, HIF2α or both, and a new HRE-luciferase reporter mouse line. After CLP, these HRE-luciferase reporter mice show signals in several tissues, including the liver. Hydrodynamic injection of an HRE-luciferase reporter plasmid also led to (liver-specific) signals in hypoxia and CLP. Despite these encouraging data, however, hepatocyte-specific HIF1α and/or HIF2α knock-out mice suggest that survival after CLP was not dependent on the hepatocyte-specific presence of HIF proteins, which was supported by measuring blood levels of glucose, FFAs, and KBs. The HIF proteins were also irrelevant in the CLP-induced glucocorticoid resistance, but we found indications that the absence of HIF1α in hepatocytes causes less inactivation of PPARα transcriptional function.ConclusionWe conclude that HIF1α and HIF2α are activated in hepatocytes in sepsis, but their contribution to the mechanisms leading to lethality are minimal.
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Affiliation(s)
- Tineke Vanderhaeghen
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Steven Timmermans
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Melanie Eggermont
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Deepika Watts
- Department of Clinical Pathobiochemistry, Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
- Deutsche Forschungsgemeinschaft (DFG) Research Centre and Cluster of Excellence for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Jolien Vandewalle
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Charlotte Wallaeys
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Louise Nuyttens
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Joyca De Temmerman
- Department of Nutrition, Genetics, and Ethology, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
- Department of Pathology, Bacteriology, and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Tino Hochepied
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sylviane Dewaele
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Joke Vanden Berghe
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Niek Sanders
- Department of Nutrition, Genetics, and Ethology, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
- Department of Pathology, Bacteriology, and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Ben Wielockx
- Department of Clinical Pathobiochemistry, Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
- Deutsche Forschungsgemeinschaft (DFG) Research Centre and Cluster of Excellence for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Rudi Beyaert
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- *Correspondence: Claude Libert,
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Wukitch AM, Lawrence MM, Satriale FP, Patel A, Ginder GM, Van Beek EJ, Gilani O, Chambers MC. Impact of Chronic Infection on Resistance and Tolerance to Secondary Infection in Drosophila melanogaster. Infect Immun 2023; 91:e0036022. [PMID: 36794959 PMCID: PMC10016074 DOI: 10.1128/iai.00360-22] [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: 02/17/2023] Open
Abstract
Prior exposure to a pathogen can greatly influence the outcome of a secondary infection, and although invertebrates lack classically defined adaptive immunity, their immune response is still influenced by prior immune challenges. While the strength and specificity of such immune priming depends highly on the host organism and infecting microbe, chronic bacterial infection of the fruit fly Drosophila melanogaster with species isolated from wild-caught fruit flies provides broad nonspecific protection against a later secondary bacterial infection. To determine how chronic infection influences progression of secondary infection, we specifically tested how chronic infection with Serratia marcescens and Enterococcus faecalis impacted both resistance and tolerance to a secondary infection with an unrelated bacterium, Providencia rettgeri, by simultaneously tracking survival and bacterial load postinfection across a range of infectious doses. We found that these chronic infections increased both tolerance and resistance to P. rettgeri. Further investigation of S. marcescens chronic infection also revealed robust protection against the highly virulent Providencia sneebia, and that protection was dependent on the initial infectious dose for S. marcescens with protective doses corresponding with significantly increased diptericin expression. While the increased expression of this antimicrobial peptide gene likely explains the increased resistance, increased tolerance is likely due to other alterations in organismal physiology, such as increased negative regulation of immunity or tolerance of ER stress. These findings provide a foundation for future studies on how chronic infection influences tolerance to secondary infection.
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Affiliation(s)
- Abigail M. Wukitch
- Department of Biology, Bucknell University, Lewisburg, Pennsylvania, USA
| | | | | | - Alexa Patel
- Department of Biology, Bucknell University, Lewisburg, Pennsylvania, USA
| | - Grace M. Ginder
- Department of Biology, Bucknell University, Lewisburg, Pennsylvania, USA
| | - Emily J. Van Beek
- Department of Biology, Bucknell University, Lewisburg, Pennsylvania, USA
| | - Owais Gilani
- Department of Mathematics, Bucknell University, Lewisburg, Pennsylvania, USA
| | - Moria C. Chambers
- Department of Biology, Bucknell University, Lewisburg, Pennsylvania, USA
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72
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Sanchez KK, McCarville JL, Stengel SJ, Snyder JM, Williams AE, Ayres JS. Age-dependent roles of cardiac remodeling in sepsis defense and pathogenesis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.14.532695. [PMID: 36993409 PMCID: PMC10055033 DOI: 10.1101/2023.03.14.532695] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Disease tolerance is a defense strategy essential for survival of infections, limiting physiological damage without killing the pathogen. The disease course and pathology a pathogen may cause can change over the lifespan of a host due to the structural and functional physiological changes that accumulate with age. Since successful disease tolerance responses require the host to engage mechanisms that are compatible with the disease course and pathology caused by an infection, we predicted that this defense strategy would change with age. Animals infected with a lethal dose 50 (LD50) of a pathogen often display distinct health and sickness trajectories due to differences in disease tolerance, and thus can be used to delineate tolerance mechanisms. Using a polymicrobial sepsis model, we found that despite having the same LD50, old and young susceptible mice exhibited distinct disease courses. Young survivors employed a cardioprotective mechanism via FoxO1-mediated regulation of the ubiquitin-proteosome system that was necessary for survival and protection from cardiomegaly. This same mechanism was a driver of sepsis pathogenesis in aged hosts, causing catabolic remodeling of the heart and death. Our findings have implications for the tailoring of therapy to the age of an infected individual and suggest that disease tolerance alleles may exhibit antagonistic pleiotropy.
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Affiliation(s)
- Karina K. Sanchez
- Molecular and Systems Physiology Lab, University of Washington, Seattle WA
- Gene Expression Lab, University of Washington, Seattle WA
- Nomis Center for Immunobiology and Microbial Pathogenesis, University of Washington, Seattle WA
| | - Justin L. McCarville
- Molecular and Systems Physiology Lab, University of Washington, Seattle WA
- Gene Expression Lab, University of Washington, Seattle WA
- Nomis Center for Immunobiology and Microbial Pathogenesis, University of Washington, Seattle WA
| | - Sarah J. Stengel
- Molecular and Systems Physiology Lab, University of Washington, Seattle WA
- Gene Expression Lab, University of Washington, Seattle WA
- Nomis Center for Immunobiology and Microbial Pathogenesis, University of Washington, Seattle WA
| | - Jessica M. Snyder
- Department of Comparative Medicine, School of Medicine, University of Washington, Seattle WA
| | - April E. Williams
- The Razavi Newman Integrative Genomics and Bioinformatics Core Facility Salk Institute for Biological Studies, 10010 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Janelle S. Ayres
- Molecular and Systems Physiology Lab, University of Washington, Seattle WA
- Gene Expression Lab, University of Washington, Seattle WA
- Nomis Center for Immunobiology and Microbial Pathogenesis, University of Washington, Seattle WA
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73
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Berber E, Sumbria D, Kokkaya S. A metabolic blueprint of COVID-19 and long-term vaccine efficacy. Drug Metab Pers Ther 2023; 38:15-29. [PMID: 36166711 DOI: 10.1515/dmpt-2022-0148] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 08/24/2022] [Indexed: 06/16/2023]
Abstract
Viruses are obligatory protein-coated units and often utilize the metabolic functions of the cells they infect. Viruses hijack cellular metabolic functions and cause consequences that can range from minor to devastating, as we have all witnessed during the COVID-19 pandemic. For understanding the virus-driven pathogenesis and its implications on the host, the cellular metabolism needs to be elucidated. How SARS-CoV-2 triggers metabolic functions and rewires the metabolism remains unidentified but the implications of the metabolic patterns are under investigation by several researchers. In this review, we have described the SARS-CoV-2-mediated metabolic alterations from in vitro studies to metabolic changes reported in victims of COVID-19. We have also discussed potential therapeutic targets to diminish the viral infection and suppress the inflammatory response, with respect to evidenced studies based on COVID-19 research. Finally, we aimed to explain how we could extend vaccine-induced immunity in people by targeting the immunometabolism.
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Affiliation(s)
- Engin Berber
- College of Veterinary Medicine, University of Tennessee, Knoxville, TN, USA
| | - Deepak Sumbria
- College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Rampura Phul, Bathinda, India
| | - Serkan Kokkaya
- Faculty of Veterinary Medicine, Bozok University, Yozgat, Turkey
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74
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Bin NR, Prescott SL, Horio N, Wang Y, Chiu IM, Liberles SD. An airway-to-brain sensory pathway mediates influenza-induced sickness. Nature 2023; 615:660-667. [PMID: 36890237 PMCID: PMC10033449 DOI: 10.1038/s41586-023-05796-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 02/03/2023] [Indexed: 03/10/2023]
Abstract
Pathogen infection causes a stereotyped state of sickness that involves neuronally orchestrated behavioural and physiological changes1,2. On infection, immune cells release a 'storm' of cytokines and other mediators, many of which are detected by neurons3,4; yet, the responding neural circuits and neuro-immune interaction mechanisms that evoke sickness behaviour during naturalistic infections remain unclear. Over-the-counter medications such as aspirin and ibuprofen are widely used to alleviate sickness and act by blocking prostaglandin E2 (PGE2) synthesis5. A leading model is that PGE2 crosses the blood-brain barrier and directly engages hypothalamic neurons2. Here, using genetic tools that broadly cover a peripheral sensory neuron atlas, we instead identified a small population of PGE2-detecting glossopharyngeal sensory neurons (petrosal GABRA1 neurons) that are essential for influenza-induced sickness behaviour in mice. Ablating petrosal GABRA1 neurons or targeted knockout of PGE2 receptor 3 (EP3) in these neurons eliminates influenza-induced decreases in food intake, water intake and mobility during early-stage infection and improves survival. Genetically guided anatomical mapping revealed that petrosal GABRA1 neurons project to mucosal regions of the nasopharynx with increased expression of cyclooxygenase-2 after infection, and also display a specific axonal targeting pattern in the brainstem. Together, these findings reveal a primary airway-to-brain sensory pathway that detects locally produced prostaglandins and mediates systemic sickness responses to respiratory virus infection.
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Affiliation(s)
- Na-Ryum Bin
- Howard Hughes Medical Institute, Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - Sara L Prescott
- Howard Hughes Medical Institute, Department of Cell Biology, Harvard Medical School, Boston, MA, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Nao Horio
- Howard Hughes Medical Institute, Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - Yandan Wang
- Howard Hughes Medical Institute, Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - Isaac M Chiu
- Department of Immunology, Harvard Medical School, Boston, MA, USA
| | - Stephen D Liberles
- Howard Hughes Medical Institute, Department of Cell Biology, Harvard Medical School, Boston, MA, USA.
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Sepsis-associated acute kidney injury: consensus report of the 28th Acute Disease Quality Initiative workgroup. Nat Rev Nephrol 2023; 19:401-417. [PMID: 36823168 DOI: 10.1038/s41581-023-00683-3] [Citation(s) in RCA: 84] [Impact Index Per Article: 84.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/18/2023] [Indexed: 02/25/2023]
Abstract
Sepsis-associated acute kidney injury (SA-AKI) is common in critically ill patients and is strongly associated with adverse outcomes, including an increased risk of chronic kidney disease, cardiovascular events and death. The pathophysiology of SA-AKI remains elusive, although microcirculatory dysfunction, cellular metabolic reprogramming and dysregulated inflammatory responses have been implicated in preclinical studies. SA-AKI is best defined as the occurrence of AKI within 7 days of sepsis onset (diagnosed according to Kidney Disease Improving Global Outcome criteria and Sepsis 3 criteria, respectively). Improving outcomes in SA-AKI is challenging, as patients can present with either clinical or subclinical AKI. Early identification of patients at risk of AKI, or at risk of progressing to severe and/or persistent AKI, is crucial to the timely initiation of adequate supportive measures, including limiting further insults to the kidney. Accordingly, the discovery of biomarkers associated with AKI that can aid in early diagnosis is an area of intensive investigation. Additionally, high-quality evidence on best-practice care of patients with AKI, sepsis and SA-AKI has continued to accrue. Although specific therapeutic options are limited, several clinical trials have evaluated the use of care bundles and extracorporeal techniques as potential therapeutic approaches. Here we provide graded recommendations for managing SA-AKI and highlight priorities for future research.
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76
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Escudero-Pérez B, Lalande A, Mathieu C, Lawrence P. Host–Pathogen Interactions Influencing Zoonotic Spillover Potential and Transmission in Humans. Viruses 2023; 15:v15030599. [PMID: 36992308 PMCID: PMC10060007 DOI: 10.3390/v15030599] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/13/2023] [Accepted: 02/20/2023] [Indexed: 02/24/2023] Open
Abstract
Emerging infectious diseases of zoonotic origin are an ever-increasing public health risk and economic burden. The factors that determine if and when an animal virus is able to spill over into the human population with sufficient success to achieve ongoing transmission in humans are complex and dynamic. We are currently unable to fully predict which pathogens may appear in humans, where and with what impact. In this review, we highlight current knowledge of the key host–pathogen interactions known to influence zoonotic spillover potential and transmission in humans, with a particular focus on two important human viruses of zoonotic origin, the Nipah virus and the Ebola virus. Namely, key factors determining spillover potential include cellular and tissue tropism, as well as the virulence and pathogenic characteristics of the pathogen and the capacity of the pathogen to adapt and evolve within a novel host environment. We also detail our emerging understanding of the importance of steric hindrance of host cell factors by viral proteins using a “flytrap”-type mechanism of protein amyloidogenesis that could be crucial in developing future antiviral therapies against emerging pathogens. Finally, we discuss strategies to prepare for and to reduce the frequency of zoonotic spillover occurrences in order to minimize the risk of new outbreaks.
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Affiliation(s)
- Beatriz Escudero-Pérez
- WHO Collaborating Centre for Arbovirus and Haemorrhagic Fever Reference and Research, Bernhard Nocht Institute for Tropical Medicine, 20359 Hamburg, Germany
- German Center for Infection Research (DZIF), Partner Site Hamburg-Luebeck-Borstel-Reims, 38124 Braunschweig, Germany
| | - Alexandre Lalande
- CIRI (Centre International de Recherche en Infectiologie), Team Neuro-Invasion, TROpism and VIRal Encephalitis, INSERM U1111, CNRS UMR5308, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, 69007 Lyon, France
| | - Cyrille Mathieu
- CIRI (Centre International de Recherche en Infectiologie), Team Neuro-Invasion, TROpism and VIRal Encephalitis, INSERM U1111, CNRS UMR5308, Université Claude Bernard Lyon 1, Ecole Normale Supérieure de Lyon, 69007 Lyon, France
| | - Philip Lawrence
- CONFLUENCE: Sciences et Humanités (EA 1598), Université Catholique de Lyon (UCLy), 69002 Lyon, France
- Correspondence:
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Peroxisome Proliferator-Activated Receptor-Targeted Therapies: Challenges upon Infectious Diseases. Cells 2023; 12:cells12040650. [PMID: 36831317 PMCID: PMC9954612 DOI: 10.3390/cells12040650] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 02/22/2023] Open
Abstract
Peroxisome proliferator-activated receptors (PPARs) α, β, and γ are nuclear receptors that orchestrate the transcriptional regulation of genes involved in a variety of biological responses, such as energy metabolism and homeostasis, regulation of inflammation, cellular development, and differentiation. The many roles played by the PPAR signaling pathways indicate that PPARs may be useful targets for various human diseases, including metabolic and inflammatory conditions and tumors. Accumulating evidence suggests that each PPAR plays prominent but different roles in viral, bacterial, and parasitic infectious disease development. In this review, we discuss recent PPAR research works that are focused on how PPARs control various infections and immune responses. In addition, we describe the current and potential therapeutic uses of PPAR agonists/antagonists in the context of infectious diseases. A more comprehensive understanding of the roles played by PPARs in terms of host-pathogen interactions will yield potential adjunctive personalized therapies employing PPAR-modulating agents.
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78
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Lin C, Jyotaki M, Quinlan J, Feng S, Zhou M, Jiang P, Matsumoto I, Huang L, Ninomiya Y, Margolskee RF, Reed DR, Wang H. Inflammation induces bitter taste oversensitization via epigenetic changes in Tas2r gene clusters. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.08.527520. [PMID: 36798225 PMCID: PMC9934667 DOI: 10.1101/2023.02.08.527520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
T2R bitter receptors, encoded by Tas2r genes, are not only critical for bitter taste signal transduction but also important for defense against bacteria and parasites. However, little is known about whether and how Tas2r gene expression are regulated. Here we show that, in an inflammation model mimicking bacterial infection, the expression of many Tas2rs are significantly up-regulated and mice displayed markedly increased neural and behavioral responses to bitter compounds. Using single-cell assays for transposase-accessible chromatin with sequencing (scATAC-seq), we found that the chromatin accessibility of Tas2rs was highly cell type specific and inflammation increased the accessibility of many Tas2rs . scATAC-seq also revealed substantial chromatin remodeling in immune response genes in taste tissue stem cells, suggesting potential long-term effects. Together, our results suggest an epigenetic mechanism connecting inflammation, Tas2r gene regulation, and altered bitter taste, which may explain heightened bitter taste that can occur with infections and cancer treatments.
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79
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Xia Y, Ding X, Wang S, Ren W. Circadian orchestration of host and gut microbiota in infection. Biol Rev Camb Philos Soc 2023; 98:115-131. [PMID: 36106627 DOI: 10.1111/brv.12898] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 08/15/2022] [Accepted: 08/16/2022] [Indexed: 01/12/2023]
Abstract
Circadian rhythms are present in almost every organism and regulate multiple aspects of biological and physiological processes (e.g. metabolism, immune responses, and microbial exposure). There exists a bidirectional circadian interaction between the host and its gut microbiota, and potential circadian orchestration of both host and gut microbiota in response to invading pathogens. In this review, we summarize what is known about these intestinal microbial oscillations and the relationships between host circadian clocks and various infectious agents (bacteria, fungi, parasites, and viruses), and discuss how host circadian clocks prime the immune system to fight pathogen infections as well as the direct effects of circadian clocks on viral activity (e.g. SARS-CoV-2 entry and replication). Finally, we consider strategies employed to realign normal circadian rhythmicity for host health, such as chronotherapy, dietary intervention, good sleep hygiene, and gut microbiota-targeted therapy. We propose that targeting circadian rhythmicity may provide therapeutic opportunities for the treatment of infectious diseases.
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Affiliation(s)
- Yaoyao Xia
- Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Science, Lanzhou, 730050, China.,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory of Lingnan Modern Agriculture, National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Xuezhi Ding
- Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Science, Lanzhou, 730050, China
| | - Shengyi Wang
- Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Science, Lanzhou, 730050, China
| | - Wenkai Ren
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory of Lingnan Modern Agriculture, National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
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80
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Redondo-Urzainqui A, Hernández-García E, Cook ECL, Iborra S. Dendritic cells in energy balance regulation. Immunol Lett 2023; 253:19-27. [PMID: 36586424 DOI: 10.1016/j.imlet.2022.12.002] [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: 10/30/2022] [Revised: 12/21/2022] [Accepted: 12/26/2022] [Indexed: 12/30/2022]
Abstract
Besides their well-known role in initiating adaptive immune responses, several groups have studied the role of dendritic cells (DCs) in the context of chronic metabolic inflammation, such as in diet-induced obesity (DIO) or metabolic-associated fatty liver disease. DCs also have an important function in maintaining metabolic tissue homeostasis in steady-state conditions. In this review, we will briefly describe the different DC subsets, the murine models available to assess their function, and discuss the role of DCs in regulating energy balance and maintaining tissue homeostasis.
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Affiliation(s)
- Ana Redondo-Urzainqui
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, 28040, Spain
| | - Elena Hernández-García
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, 28040, Spain
| | - Emma Clare Laura Cook
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, 28040, Spain.
| | - Salvador Iborra
- Department of Immunology, Ophthalmology and ENT, School of Medicine, Universidad Complutense de Madrid, Madrid, 28040, Spain.
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Abstract
Sickness behavior was conceptualized initially as the behavioral counterpart of the fever response to infectious pathogens. It helps to raise body temperature to its higher setpoint and to maintain it at this new level and it has the additional benefit of enabling a weakened organism to protect itself from other dangers. The discovery of the behavioral effects of proinflammatory cytokines produced by activated immune cells provided a cellular and molecular basis to this phenomenon. The administration of cytokines or cytokine inducers like lipopolysaccharide to healthy rodents allowed to reveal the similarities and differences between inflammation-induced sickness behavior and the fever response. It also led to the understanding of how the inflammatory response that is triggered at the periphery can propagate into the brain and induce the behavioral manifestations of sickness. At the behavioral level, the demonstration that sickness behavior is the expression of a motivational state that reorganizes perception and action in face of a microbial pathogen just like fear in face of a predator appeared at first glance to strengthen the adaptive value of this behavior. However, all aspects of sickness behavior are not always favorable for the organism. This is the case for anorexia that is beneficial in the context of bacterial infection but detrimental in the context of viral infection. In addition, studies of sickness behavior in natural conditions revealed that like any other defensive behavior, sickness behavior requires trade-offs between its survival benefits for the sick individual and the costs incurred especially in the context of gregarious groups. Thanks to these studies, evidence is emerging that sickness behavior is much more variable in its expression than initially thought, and that part of this variability depends not only on the pathogen and the social context in which the infection develops but also on individual factors including species, sex, age, nutrition, and physiological status.
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Affiliation(s)
- Robert Dantzer
- Department of Symptom Research, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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82
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Xu J, Xiao N, Zhou D, Xie L. Disease tolerance: a protective mechanism of lung infections. Front Cell Infect Microbiol 2023; 13:1037850. [PMID: 37207185 PMCID: PMC10189053 DOI: 10.3389/fcimb.2023.1037850] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 03/30/2023] [Indexed: 05/21/2023] Open
Abstract
Resistance and tolerance are two important strategies employed by the host immune response to defend against pathogens. Multidrug-resistant bacteria affect the resistance mechanisms involved in pathogen clearance. Disease tolerance, defined as the ability to reduce the negative impact of infection on the host, might be a new research direction for the treatment of infections. The lungs are highly susceptible to infections and thus are important for understanding host tolerance and its precise mechanisms. This review focuses on the factors that induce lung disease tolerance, cell and molecular mechanisms involved in tissue damage control, and the relationship between disease tolerance and sepsis immunoparalysis. Understanding the exact mechanism of lung disease tolerance could allow better assessment of the immune status of patients and provide new ideas for the treatment of infections.
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Affiliation(s)
- Jianqiao Xu
- College of Pulmonary & Critical Care Medicine, 8th Medical Center, Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese PLA, Beijing, China
| | - Nan Xiao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Dongsheng Zhou
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
- *Correspondence: Dongsheng Zhou, ; Lixin Xie,
| | - Lixin Xie
- College of Pulmonary & Critical Care Medicine, 8th Medical Center, Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese PLA, Beijing, China
- *Correspondence: Dongsheng Zhou, ; Lixin Xie,
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83
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Reyes J, Yap GS. Emerging Roles of Growth Differentiation Factor 15 in Immunoregulation and Pathogenesis. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 210:5-11. [PMID: 36542831 PMCID: PMC9779231 DOI: 10.4049/jimmunol.2200641] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 09/08/2022] [Indexed: 12/24/2022]
Abstract
Growth differentiation factor 15 (GDF-15) is a cytokine that is widely used as a biomarker for the severity of diverse disease states. It also has been shown to play a protective role after tissue injury and to promote a negative energy balance during obesity and diabetes. In addition to its metabolic effects, GDF-15 also regulates the host's immune responses to infectious and noninfectious diseases. GDF-15 can suppress a type 1 and, in contrast, promote a type 2 inflammatory response. In this brief review, we discuss how GDF-15 affects the effector function and recruitment of immune cells, the pathways that induce its expression, and the diverse mechanisms by which it is regulated during inflammation and infection. We further highlight outstanding questions that should be the focus of future investigations in this emerging field.
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Affiliation(s)
- Jojo Reyes
- Department of Medicine and Center for Immunity and Inflammation, New Jersey Medical School, Rutgers University, Newark, NJ 07101
| | - George S. Yap
- Department of Medicine and Center for Immunity and Inflammation, New Jersey Medical School, Rutgers University, Newark, NJ 07101
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84
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Vandewalle J, Garcia B, Timmermans S, Vanderhaeghen T, Van Wyngene L, Eggermont M, Dufoor H, Van Dender C, Halimi F, Croubels S, Herpain A, Libert C. Hepatic Peroxisome Proliferator-Activated Receptor Alpha Dysfunction in Porcine Septic Shock. Cells 2022; 11:cells11244080. [PMID: 36552845 PMCID: PMC9777423 DOI: 10.3390/cells11244080] [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: 11/24/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Despite decades of research, sepsis remains one of the most urgent unmet medical needs. Mechanistic investigations into sepsis have mainly focused on targeting inflammatory pathways; however, recent data indicate that sepsis should also be seen as a metabolic disease. Targeting metabolic dysregulations that take place in sepsis might uncover novel therapeutic opportunities. The role of peroxisome proliferator-activated receptor alpha (PPARɑ) in liver dysfunction during sepsis has recently been described, and restoring PPARɑ signaling has proven to be successful in mouse polymicrobial sepsis. To confirm that such therapy might be translated to septic patients, we analyzed metabolic perturbations in the liver of a porcine fecal peritonitis model. Resuscitation with fluids, vasopressor, antimicrobial therapy and abdominal lavage were applied to the pigs in order to mimic human clinical care. By using RNA-seq, we detected downregulated PPARɑ signaling in the livers of septic pigs and that reduced PPARɑ levels correlated well with disease severity. As PPARɑ regulates the expression of many genes involved in fatty acid oxidation, the reduced expression of these target genes, concomitant with increased free fatty acids in plasma and ectopic lipid deposition in the liver, was observed. The results obtained with pigs are in agreement with earlier observations seen in mice and support the potential of targeting defective PPARɑ signaling in clinical research.
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Affiliation(s)
- Jolien Vandewalle
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
- Correspondence: (J.V.); (C.L.)
| | - Bruno Garcia
- Experimental Laboratory of Intensive Care, Université Libre de Bruxelles, 1050 Brussels, Belgium
- Department of Intensive Care, Centre Hospitalier Universitaire de Lille, 59000 Lille, France
| | - Steven Timmermans
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
| | - Tineke Vanderhaeghen
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
| | - Lise Van Wyngene
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
| | - Melanie Eggermont
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
| | - Hester Dufoor
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
| | - Céline Van Dender
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
| | - Fëllanza Halimi
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium
| | - Siska Croubels
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium
| | - Antoine Herpain
- Experimental Laboratory of Intensive Care, Université Libre de Bruxelles, 1050 Brussels, Belgium
- Department of Intensive Care, Erasme University Hospital—HUB, Université Libre de Bruxelles, 1050 Brussels, Belgium
- Department of Intensive Care, St.-Pierre University Hospital, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Claude Libert
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
- Correspondence: (J.V.); (C.L.)
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85
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Sexual Dimorphic Innate Immune Response to a Viral-Bacterial Respiratory Disease Challenge in Beef Calves. Vet Sci 2022; 9:vetsci9120696. [PMID: 36548857 PMCID: PMC9785962 DOI: 10.3390/vetsci9120696] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/05/2022] [Accepted: 12/10/2022] [Indexed: 12/23/2022] Open
Abstract
The potential for sexually dimorphic innate immune responses to respiratory disease was evaluated, where eight steers and seven heifers (280 ± 4 kg) were subjected to a viral−bacterial respiratory disease challenge utilizing bovine herpesvirus-1 (BoHV-1; intranasal; 1 × 108 PFU/nostril) and Mannheimia haemolytica (MH; intratracheal; 1.3 × 107 CFU/head) administered 72 h later. Body temperature was lesser in heifers than steers (p < 0.01). There was a sex × time interaction (p = 0.05) for white blood cells where heifers had reduced concentrations compared with steers at −72 and 0 h but greater concentrations from 36 to 60 h post-MH. Concentrations of neutrophils were lesser in heifers compared to steers from 0 to 4 h, and from 8 to 12 h (p = 0.03). Lymphocytes were greater in heifers compared to steers at 12 h and from 36 to 60 h post-MH (p < 0.01). The neutrophil−lymphocyte ratio was lesser in heifers compared to steers from 2 to 24 h and at 48 h post-MH (p < 0.01). Monocytes were greater in heifers compared to steers from 24 to 60 h post-MH (p < 0.01), while eosinophils were greater in heifers compared to steers at 48 and 60 h (p < 0.01). Serum IL-4 was lesser in heifers compared to steers at 0 h and from 2 to 72 h post-MH challenge (p = 0.02). Non-esterified fatty acid concentrations were lesser (p < 0.01) in heifers compared to steers from 2 to 4 h post-MH challenge. Urea nitrogen concentrations were greater (p < 0.01) in heifers than steers at 36 h post-MH challenge. Data from this study reveal distinct differences in the acute phase response following a respiratory disease challenge where steers produced an early response, while the response in heifers appeared to be delayed.
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86
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AMPK directly phosphorylates TBK1 to integrate glucose sensing into innate immunity. Mol Cell 2022; 82:4519-4536.e7. [PMID: 36384137 DOI: 10.1016/j.molcel.2022.10.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 05/18/2022] [Accepted: 10/25/2022] [Indexed: 11/17/2022]
Abstract
Nutrient sensing and damage sensing are two fundamental processes in living organisms. While hyperglycemia is frequently linked to diabetes-related vulnerability to microbial infection, how body glucose levels affect innate immune responses to microbial invasion is not fully understood. Here, we surprisingly found that viral infection led to a rapid and dramatic decrease in blood glucose levels in rodents, leading to robust AMPK activation. AMPK, once activated, directly phosphorylates TBK1 at S511, which triggers IRF3 recruitment and the assembly of MAVS or STING signalosomes. Consistently, ablation or inhibition of AMPK, knockin of TBK1-S511A, or increased glucose levels compromised nucleic acid sensing, while boosting AMPK-TBK1 cascade by AICAR or TBK1-S511E knockin improves antiviral immunity substantially in various animal models. Thus, we identify TBK1 as an AMPK substrate, reveal the molecular mechanism coupling a dual sensing of glucose and nuclei acids, and report its physiological necessity in antiviral defense.
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87
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Jaschke NP, Funk AM, Jonas S, Riffel RM, Sinha A, Wang A, Pählig S, Hofmann M, Altmann H, Von Bonin S, Koch T, Spieth P, Tausche K, Akgün K, Rauner M, Kronstein-Wiedemann R, Odendahl M, Tonn T, Göbel A, Hofbauer LC, Rachner TD. Circulating Dickkopf1 Parallels Metabolic Adaptations and Predicts Disease Trajectories in Patients With COVID-19. J Clin Endocrinol Metab 2022; 107:3370-3377. [PMID: 36071553 PMCID: PMC9494396 DOI: 10.1210/clinem/dgac514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Indexed: 11/19/2022]
Abstract
CONTEXT AND AIMS Coronavirus disease 19 (COVID-19) trajectories show high interindividual variability, ranging from asymptomatic manifestations to fatal outcomes, the latter of which may be fueled by immunometabolic maladaptation of the host. Reliable identification of patients who are at risk of severe disease remains challenging. We hypothesized that serum concentrations of Dickkopf1 (DKK1) indicate disease outcomes in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-infected individuals. METHODS We recruited hospitalized patients with PCR-confirmed SARS-CoV-2 infection and included 80 individuals for whom blood samples from 2 independent time points were available. DKK1 serum concentrations were measured by ELISA in paired samples. Clinical data were extracted from patient charts and correlated with DKK1 levels. Publicly available datasets were screened for changes in cellular DKK1 expression on SARS-CoV-2 infection. Plasma metabolites were profiled by nuclear magnetic resonance spectroscopy in an unbiased fashion and correlated with DKK1 data. Kaplan-Meier and Cox regression analysis were used to investigate the prognostic value of DKK1 levels in the context of COVID-19. RESULTS We report that serum levels of DKK1 predict disease outcomes in patients with COVID-19. Circulating DKK1 concentrations are characterized by high interindividual variability and change as a function of time during SARS-CoV-2 infection, which is linked to platelet counts. We further find that the metabolic signature associated with SARS-CoV-2 infection resembles fasting metabolism and is mirrored by circulating DKK1 abundance. Patients with low DKK1 levels are twice as likely to die from COVID-19 than those with high levels, and DKK1 predicts mortality independent of markers of inflammation, renal function, and platelet numbers. CONCLUSION Our study suggests a potential clinical use of circulating DKK1 as a predictor of disease outcomes in patients with COVID-19. These results require validation in additional cohorts.
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Affiliation(s)
- Nikolai P Jaschke
- Correspondence to: Nikolai P. Jaschke MD, PhD, , Division of Endocrinology & Metabolic Bone Diseases, Department of Medicine III, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Alexander M Funk
- National Center for Tumor Diseases (NCT/UCC), Technische Universität Dresden, Dresden, Germany
- Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | - Sophie Jonas
- Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | - Romy M Riffel
- Department of Medicine III & Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Anupam Sinha
- Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | - Andrew Wang
- Department of Immunobiology, Yale School of Medicine, New Haven, CT, USA
| | - Sophie Pählig
- Department of Medicine III & Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Maura Hofmann
- Department of Medicine III & Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Heidi Altmann
- Department of Medicine I, Technische Universität Dresden, Dresden, Germany
| | - Simone Von Bonin
- Department of Medicine I, Technische Universität Dresden, Dresden, Germany
| | - Thea Koch
- Department of Anesthesiology and Intensive Care Medicine, Technische Universität Dresden, Dresden, Germany
| | - Peter Spieth
- Department of Anesthesiology and Intensive Care Medicine, Technische Universität Dresden, Dresden, Germany
| | - Kristin Tausche
- Department of Medicine I, Technische Universität Dresden, Dresden, Germany
| | - Katja Akgün
- Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Martina Rauner
- Department of Medicine III & Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Romy Kronstein-Wiedemann
- Experimental Transfusion Medicine, Technische Universität Dresden, Dresden, Germany
- Institute for Transfusion Medicine Dresden, German Red Cross Blood Donation Service North-East, Dresden, Germany
| | - Marcus Odendahl
- Experimental Transfusion Medicine, Technische Universität Dresden, Dresden, Germany
- Institute for Transfusion Medicine Dresden, German Red Cross Blood Donation Service North-East, Dresden, Germany
| | - Torsten Tonn
- Experimental Transfusion Medicine, Technische Universität Dresden, Dresden, Germany
- Institute for Transfusion Medicine Dresden, German Red Cross Blood Donation Service North-East, Dresden, Germany
- Center for Regenerative Therapies Dresden (CRTD), Dresden, Germany
| | - Andy Göbel
- Department of Medicine III & Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Lorenz C Hofbauer
- Department of Medicine III & Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Tilman D Rachner
- Department of Medicine III & Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
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88
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Yan F, Yuan L, Yang F, Wu G, Jiang X. Emerging roles of fibroblast growth factor 21 in critical disease. Front Cardiovasc Med 2022; 9:1053997. [PMID: 36440004 PMCID: PMC9684205 DOI: 10.3389/fcvm.2022.1053997] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 10/19/2022] [Indexed: 03/01/2024] Open
Abstract
In spite of the great progress in the management of critical diseases in recent years, its associated prevalence and mortality of multiple organ failure still remain high. As an endocrine hormone, fibroblast growth factor 21 (FGF21) functions to maintain homeostasis in the whole body. Recent studies have proved that FGF21 has promising potential effects in critical diseases. FGF21 has also been found to have a close relationship with the progression of critical diseases and has a great predictive function for organ failure. The level of FGF21 was elevated in both mouse models and human patients with sepsis or other critical illnesses. Moreover, it is a promising biomarker and has certain therapeutic roles in some critical diseases. We focus on the emerging roles of FGF21 and its potential effects in critical diseases including acute lung injury/acute respiratory distress syndrome (ALI/ARDS), acute myocardial injury (AMI), acute kidney injury (AKI), sepsis, and liver failure in this review. FGF21 has high application value and is worth further studying. Focusing on FGF21 may provide a new perspective for the management of the critical diseases.
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Affiliation(s)
- Fang Yan
- Department of Geriatrics, Chengdu Fifth People’s Hospital, Geriatric Diseases Institute of Chengdu, Chengdu, China
- Center for Medicine Research and Translation, Chengdu Fifth People’s Hospital, Chengdu, China
| | - Li Yuan
- Department of Clinical Laboratory Medicine, Chengdu Fifth People’s Hospital, Chengdu, China
| | - Fan Yang
- Department of Endocrinology, Chengdu Fifth People’s Hospital, Chengdu, China
| | - Guicheng Wu
- Department of Hepatology, School of Medicine, Chongqing Municipality Clinical Research Center for Endocrinology and Metabolic Diseases, Chongqing University Three Goreges Hosipital, Chongqing University, Chongqing, China
| | - Xiaobo Jiang
- Department of Cardiology, Chengdu Fifth People’s Hospital, Chengdu, China
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89
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Kuk MU, Ga YJ, Kim YJ, Park JY, Song ES, Lee H, Lee YH, Ko G, Kim JK, Yeh JY, Kwon HW, Byun Y, Park JT. Metabolic reprogramming as a novel therapeutic target for Coxsackievirus B3. Anim Cells Syst (Seoul) 2022; 26:275-282. [PMID: 36605593 PMCID: PMC9809346 DOI: 10.1080/19768354.2022.2141318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Coxsackievirus B3 (CVB3) is a single-stranded RNA virus that belongs to the Enterovirus genus. CVB3 is a human pathogen associated with serious conditions such as myocarditis, dilated cardiomyopathy, and pancreatitis. However, there are no therapeutic interventions to treat CVB3 infections. In this study, we found that CVB3 induced metabolic alteration in host cells through increasing glycolysis level, as indicated by an increase in the extracellular acidification rate (ECAR). CVB3-mediated metabolic alteration was confirmed by metabolite change analysis using gas chromatography-mass spectrometry (GC-MS). Based on findings, a strategy to inhibit glycolysis has been proposed to treat CVB3 infection. Indeed, glycolysis inhibitors (2-Deoxy-D-glucose, sodium oxide) significantly reduced CVB3 titers after CVB3 infection, indicating that glycolysis inhibitors can be used as effective antiviral agents. Taken together, our results reveal a novel mechanism by which CVB3 infection is controlled by regulation of host cell metabolism.
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Affiliation(s)
- Myeong Uk Kuk
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea
| | - Yun Ji Ga
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea
| | - Ye Jin Kim
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea
| | - Ji Yun Park
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea
| | - Eun Seon Song
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea
| | - Haneur Lee
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea
| | - Yun Haeng Lee
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea
| | - Gahyun Ko
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea
| | - Jae Kwang Kim
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea
| | - Jung-Yong Yeh
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea
| | - Hyung Wook Kwon
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea,Convergence Research Center for Insect Vectors, Incheon National University, Incheon, Korea, Hyung Wook Kwon Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon22012, Korea; Convergence Research Center for Insect Vectors, Incheon National University, Incheon22012, Korea; Youngjoo Byun College of Pharmacy, Korea University, Sejong30019, Republic of Korea; Joon Tae Park Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon22012, Korea; Convergence Research Center for Insect Vectors, Incheon National University, Incheon22012, Korea
| | - Youngjoo Byun
- College of Pharmacy, Korea University, Sejong, Republic of Korea, Hyung Wook Kwon Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon22012, Korea; Convergence Research Center for Insect Vectors, Incheon National University, Incheon22012, Korea; Youngjoo Byun College of Pharmacy, Korea University, Sejong30019, Republic of Korea; Joon Tae Park Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon22012, Korea; Convergence Research Center for Insect Vectors, Incheon National University, Incheon22012, Korea
| | - Joon Tae Park
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Korea,Convergence Research Center for Insect Vectors, Incheon National University, Incheon, Korea, Hyung Wook Kwon Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon22012, Korea; Convergence Research Center for Insect Vectors, Incheon National University, Incheon22012, Korea; Youngjoo Byun College of Pharmacy, Korea University, Sejong30019, Republic of Korea; Joon Tae Park Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon22012, Korea; Convergence Research Center for Insect Vectors, Incheon National University, Incheon22012, Korea
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90
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Koren T, Rolls A. Immunoception: Defining brain-regulated immunity. Neuron 2022; 110:3425-3428. [PMID: 36327893 PMCID: PMC7615112 DOI: 10.1016/j.neuron.2022.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/26/2022] [Accepted: 10/07/2022] [Indexed: 11/05/2022]
Abstract
The emerging understanding of homeostatic neuroimmune interactions requires developing relevant terminology. In this NeuroView, Koren and Rolls define "immunoception" as the brain's bidirectional monitoring and control of immunity. They propose that the physiological trace storing immune-related information, the "immunengram," is distributed between the brain and memory cells residing in peripheral tissues.
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Affiliation(s)
- Tamar Koren
- Department of Immunology, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel; Department of Neuroscience, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel
| | - Asya Rolls
- Department of Immunology, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel; Department of Neuroscience, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel.
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91
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Cootes TA, Bhattacharyya ND, Huang SS, Daniel L, Bell-Anderson KS, Stifter SA, Chew T, Solon-Biet SM, Saraiva LR, Cai Y, Chen X, Simpson SJ, Feng CG. The quality of energy- and macronutrient-balanced diets regulates host susceptibility to influenza in mice. Cell Rep 2022; 41:111638. [DOI: 10.1016/j.celrep.2022.111638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 08/28/2022] [Accepted: 10/19/2022] [Indexed: 11/17/2022] Open
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92
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Reshetnyak VI, Maev IV. Maintaining the metabolic homeostasis of Helicobacter pylori through chronic hyperglycemia in diabetes mellitus: A hypothesis. World J Meta-Anal 2022; 10:238-243. [DOI: 10.13105/wjma.v10.i5.238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/23/2022] [Accepted: 09/21/2022] [Indexed: 02/05/2023] Open
Abstract
Helicobacter pylori (H. pylori) infection occurs in almost half of the world's population, most of whom are merely carriers of this microorganism. H. pylori is shown to be detected more frequently in patients with diabetes mellitus (DM) than in the general population, which is accompanied by a significantly increased risk of developing H. pylori-associated diseases. In addition, eradication therapy shows a low efficiency for H. pylori infection in patients with DM. There is a relationship between the level of chronic hyperglycemia and a higher detection rate of H. pylori as well as a lower efficiency of eradication therapy in patients with DM. The exact mechanisms of these phenomena are unknown. The authors make a hypothesis that explains the relationship between chronic hyperglycemia and the increased detection rate of H. pylori, as well as the mechanisms contributing to the improved survival of this bacterium in patients with DM during eradication therapy.
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Affiliation(s)
- Vasiliy Ivanovich Reshetnyak
- Department of Propaedeutics of Internal Diseases and Gastroenterology, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow 127473, Russia
| | - Igor Veniaminovich Maev
- Department of Propaedeutics of Internal Diseases and Gastroenterology, A.I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow 127473, Russia
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93
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Seufert AL, Hickman JW, Traxler SK, Peterson RM, Waugh TA, Lashley SJ, Shulzhenko N, Napier RJ, Napier BA. Enriched dietary saturated fatty acids induce trained immunity via ceramide production that enhances severity of endotoxemia and clearance of infection. eLife 2022; 11:e76744. [PMID: 36264059 PMCID: PMC9642993 DOI: 10.7554/elife.76744] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 10/19/2022] [Indexed: 11/25/2022] Open
Abstract
Trained immunity is an innate immune memory response that is induced by a primary inflammatory stimulus that sensitizes monocytes and macrophages to a secondary pathogenic challenge, reprogramming the host response to infection and inflammatory disease. Dietary fatty acids can act as inflammatory stimuli, but it is unknown if they can act as the primary stimuli to induce trained immunity. Here we find mice fed a diet enriched exclusively in saturated fatty acids (ketogenic diet; KD) confer a hyper-inflammatory response to systemic lipopolysaccharide (LPS) and increased mortality, independent of diet-induced microbiome and hyperglycemia. We find KD alters the composition of the hematopoietic stem cell compartment and enhances the response of bone marrow macrophages, monocytes, and splenocytes to secondary LPS challenge. Lipidomics identified enhanced free palmitic acid (PA) and PA-associated lipids in KD-fed mice serum. We found pre-treatment with physiologically relevant concentrations of PA induces a hyper-inflammatory response to LPS in macrophages, and this was dependent on the synthesis of ceramide. In vivo, we found systemic PA confers enhanced inflammation and mortality in response to systemic LPS, and this phenotype was not reversible for up to 7 days post-PA-exposure. Conversely, we find PA exposure enhanced clearance of Candida albicans in Rag1-/- mice. Lastly, we show that oleic acid, which depletes intracellular ceramide, reverses PA-induced hyper-inflammation in macrophages and enhanced mortality in response to LPS. These implicate enriched dietary SFAs, and specifically PA, in the induction of long-lived innate immune memory and highlight the plasticity of this innate immune reprogramming by dietary constituents.
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Affiliation(s)
- Amy L Seufert
- Department of Biology and Center for Life in Extreme Environments, Portland State UniversityPortlandUnited States
| | - James W Hickman
- Department of Biology and Center for Life in Extreme Environments, Portland State UniversityPortlandUnited States
| | - Ste K Traxler
- Department of Biology and Center for Life in Extreme Environments, Portland State UniversityPortlandUnited States
| | - Rachael M Peterson
- Department of Biology and Center for Life in Extreme Environments, Portland State UniversityPortlandUnited States
| | - Trent A Waugh
- Department of Biology and Center for Life in Extreme Environments, Portland State UniversityPortlandUnited States
| | | | - Natalia Shulzhenko
- Department of Biomedical Sciences, Oregon State UniversityCorvallisUnited States
| | - Ruth J Napier
- VA Portland Health Care SystemPortlandUnited States
- Department of Molecular Microbiology and Immunology, Oregon Health & Science UniversityPortlandUnited States
| | - Brooke A Napier
- Department of Biology and Center for Life in Extreme Environments, Portland State UniversityPortlandUnited States
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94
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Lopez BS. Can Infectious Disease Control Be Achieved without Antibiotics by Exploiting Mechanisms of Disease Tolerance? Immunohorizons 2022; 6:730-740. [DOI: 10.4049/immunohorizons.2200043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 10/04/2022] [Indexed: 01/04/2023] Open
Abstract
Abstract
Antimicrobial use in animal agriculture may be contributing to the emerging public health crisis of antimicrobial resistance. The sustained prevalence of infectious diseases driving antimicrobial use industry-wide suggests that traditional methods of bolstering disease resistance are, for some diseases, ineffective. A paradigm shift in our approach to infectious disease control is needed to reduce antimicrobial use and sustain animal and human health and the global economy. Targeting the defensive mechanisms that promote the health of an infected host without impacting pathogen fitness, termed “disease tolerance,” is a novel disease control approach ripe for discovery. This article presents examples of disease tolerance dictating clinical outcomes for several infectious diseases in humans, reveals evidence suggesting a similarly critical role of disease tolerance in the progression of infectious diseases plaguing animal agriculture, and thus substantiates the assertion that exploiting disease tolerance mechanisms can positively impact animal and human health.
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Affiliation(s)
- Brina S. Lopez
- Department of Farm Animal Medicine, Midwestern University College of Veterinary Medicine, Glendale, AZ
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95
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Yang M, Chen W, He L, Liu D, Zhao L, Wang X. Intermittent Fasting—A Healthy Dietary Pattern for Diabetic Nephropathy. Nutrients 2022; 14:nu14193995. [PMID: 36235648 PMCID: PMC9571963 DOI: 10.3390/nu14193995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/20/2022] [Accepted: 09/23/2022] [Indexed: 11/17/2022] Open
Abstract
Diabetic nephropathy (DN), a metabolic disease, is characterized by severe systemic metabolic disorders. A unique dietary pattern, such as intermittent fasting (IF) has shown promising protective effects on various metabolic diseases, such as diabetes and cardiovascular and nervous system diseases. However, its role in regulating kidney disease, especially in DN, is still being investigated. Here, we summarize the current research progress, highlighting the relationship between IF and the risk factors for the progression of DN, and discuss the potential mechanisms by which IF improves renal injury in DN. Finally, we propose IF as a potential strategy to prevent and delay DN progression. Abbreviation: DN: Diabetic nephropathy; IF: Intermittent fasting; CPT1A: Carnitine palmitoyltransferase 1A; L-FABP: Liver-type fatty acid-binding protein; STZ: Streptozotocin; LDL: Low-density lipoproteins; HIIT: High-intensity interval training; CKD: Chronic kidney disease; ACEI: Angiotensin-converting enzyme inhibitors; ARB: Angiotensin receptor blockers; MDA: Malondialdehyde; mtDNA: Mitochondrial DNA; UCP3: Uncoupling protein-3; MAM: Mitochondria-associated endoplasmic reticulum membrane; PBMCs: Peripheral blood mononuclear cells; ERK1/2: Extracellular signal-regulated kinase 1/2; DRP1: Dynamin-related protein 1; β-HB: β-Hydroxybutyrate; AcAc: Acetoacetate; GEO: Gene Expression Omnibus; NCBI: National Center for Biotechnology Information; mTORC1: Mechanistic target of rapamycin complex 1; HMGCS2: 3-Hydroxy-3-methylglutaryl-CoA synthase 2; GSK3β: Glycogen synthase kinase 3β; AKI: Acute kidney injury; CMA: Chaperone-mediated autophagy; FGF21: Fibroblast growth factor 21.
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Affiliation(s)
- Ming Yang
- Department of Nutrition, Xiangya Hospital, Central South University, Changsha 410008, China
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Wei Chen
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Liyu He
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Di Liu
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Li Zhao
- Department of Reproduction and Genetics, The First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - Xi Wang
- Department of Nutrition, Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
- Correspondence:
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96
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Boutagouga Boudjadja M, Culotta I, De Paula GC, Harno E, Hunter J, Cavalcanti-de-Albuquerque JP, Luckman SM, Hepworth M, White A, Aviello G, D'Agostino G. Hypothalamic AgRP neurons exert top-down control on systemic TNF-α release during endotoxemia. Curr Biol 2022; 32:4699-4706.e4. [PMID: 36182699 DOI: 10.1016/j.cub.2022.09.017] [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: 05/16/2022] [Revised: 07/21/2022] [Accepted: 09/08/2022] [Indexed: 11/25/2022]
Abstract
Loss of appetite and negative energy balance are common features of endotoxemia in all animals and are thought to have protective roles by reducing nutrient availability to host and pathogen metabolism. Accordingly, fasting and caloric restriction have well-established anti-inflammatory properties. However, in response to reduced nutrient availability at the cellular and organ levels, negative energy balance also recruits distinct energy-sensing brain circuits, but it is not known whether these neuronal systems have a role in its anti-inflammatory effects. Here, we report that hypothalamic AgRP neurons-a critical neuronal population for the central representation of negative energy balance-have parallel immunoregulatory functions. We found that when endotoxemia occurs in fasted mice, the activity of AgRP neurons remains sustained, but this activity does not influence feeding behavior and endotoxemic anorexia. Furthermore, we found that endotoxemia acutely desensitizes AgRP neurons, which also become refractory to inhibitory signals. Mimicking this sustained AgRP neuron activity in fed mice by chemogenetic activation-a manipulation known to recapitulate core behavioral features of fasting-results in reduced acute tumor necrosis factor alpha (TNF-α) release during endotoxemia. Mechanistically, we found that endogenous glucocorticoids play an important role: glucocorticoid receptor deletion from AgRP neurons prevents their endotoxemia-induced desensitization, and importantly, it counteracts the fasting-induced suppression of TNF-α release, resulting in prolonged sickness. Together, these findings provide evidence directly linking AgRP neuron activity to the acute response during endotoxemia, suggesting that these neurons are a functional component of the immunoregulatory effects associated with negative energy balance and catabolic metabolism.
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Affiliation(s)
- Mehdi Boutagouga Boudjadja
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK; The Rowett Institute, University of Aberdeen, Aberdeen, UK
| | - Isabella Culotta
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | | | - Erika Harno
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Jenna Hunter
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | | | - Simon M Luckman
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Matthew Hepworth
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Anne White
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Gabriella Aviello
- The Rowett Institute, University of Aberdeen, Aberdeen, UK; Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Giuseppe D'Agostino
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK; The Rowett Institute, University of Aberdeen, Aberdeen, UK.
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97
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Infection increases activity via Toll dependent and independent mechanisms in Drosophila melanogaster. PLoS Pathog 2022; 18:e1010826. [PMID: 36129961 PMCID: PMC9529128 DOI: 10.1371/journal.ppat.1010826] [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: 01/25/2022] [Revised: 10/03/2022] [Accepted: 08/23/2022] [Indexed: 11/19/2022] Open
Abstract
Host behavioural changes are among the most apparent effects of infection. ‘Sickness behaviour’ can involve a variety of symptoms, including anorexia, depression, and changed activity levels. Here, using a real-time tracking and behavioural profiling platform, we show that in Drosophila melanogaster, several systemic bacterial infections cause significant increases in physical activity, and that the extent of this activity increase is a predictor of survival time in some lethal infections. Using multiple bacteria and D. melanogaster immune and activity mutants, we show that increased activity is driven by at least two different mechanisms. Increased activity after infection with Micrococcus luteus, a Gram-positive bacterium rapidly cleared by the immune response, strictly requires the Toll ligand spätzle. In contrast, increased activity after infection with Francisella novicida, a Gram-negative bacterium that cannot be cleared by the immune response, is entirely independent of both Toll and the parallel IMD pathway. The existence of multiple signalling mechanisms by which bacterial infections drive increases in physical activity implies that this effect may be an important aspect of the host response. Sickness behaviours are often observed during infection. Animals have been shown to change their feeding, mating, social and resting (sleeping) behaviours in response to infection. We show here that fruit-flies infected with bacteria respond by increasing their physical activity and decreasing the amount of time spent sleeping. This increase in activity is seen in some, but not all, bacterial infections, and appears to be driven by at least two different mechanisms: with some bacteria, activating the immune response is the only requirement to induce increased activity, while other bacteria induce increased activity independently of known immune detection pathways. The biological role of increased activity is unclear; flies in the wild may be driven to flee sites where infection risk or pathogen burden is high. Alternatively, increased activity could serve a less direct anti-microbial function. For example, active animals may be more likely to encounter potential mates or food resource.
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98
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Chronic Leptin Deficiency Improves Tolerance of Physiological Damage and Host-Pathogen Cooperation during Yersinia pseudotuberculosis Infection. Infect Immun 2022; 90:e0024222. [PMID: 35924898 PMCID: PMC9476980 DOI: 10.1128/iai.00242-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
To combat infections, hosts employ a combination of antagonistic and cooperative defense strategies. The former refers to pathogen killing mediated by resistance mechanisms, while the latter refers to physiological defense mechanisms that promote host health during infection independent of pathogen killing, leading to an apparent cooperation between the host and the pathogen. Previous work has shown that Leptin, a pleiotropic hormone that plays a central role in regulating appetite and energy metabolism, is indispensable for resistance mechanisms, while a role for Leptin signaling in cooperative host-pathogen interactions remains unknown. Using a mouse model of Yersinia pseudotuberculosis (Yptb) infection, an emerging pathogen that causes fever, diarrhea, and mesenteric lymphadenitis in humans, we found that the physiological effects of chronic Leptin-signaling deficiency conferred protection from Yptb infection due to increased host-pathogen cooperation rather than greater resistance defenses. The protection against Yptb infection was independent of differences in food consumption, lipolysis, or fat mass. Instead, we found that the chronic absence of Leptin signaling protects from a shift to lipid utilization during infection that contributes to Yptb lethality. Furthermore, we found that the survival advantage conferred by Leptin deficiency was associated with increased liver and kidney damage. Our work reveals an additional level of complexity for the role of Leptin in infection defense and demonstrates that in some contexts, in addition to tolerating the pathogen, tolerating organ damage is more beneficial for survival than preventing the damage.
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99
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Brainstem ADCYAP1 + neurons control multiple aspects of sickness behaviour. Nature 2022; 609:761-771. [PMID: 36071158 PMCID: PMC9492535 DOI: 10.1038/s41586-022-05161-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 07/28/2022] [Indexed: 01/30/2023]
Abstract
Infections induce a set of pleiotropic responses in animals, including anorexia, adipsia, lethargy and changes in temperature, collectively termed sickness behaviours1. Although these responses have been shown to be adaptive, the underlying neural mechanisms have not been elucidated2–4. Here we use of a set of unbiased methodologies to show that a specific subpopulation of neurons in the brainstem can control the diverse responses to a bacterial endotoxin (lipopolysaccharide (LPS)) that potently induces sickness behaviour. Whole-brain activity mapping revealed that subsets of neurons in the nucleus of the solitary tract (NTS) and the area postrema (AP) acutely express FOS after LPS treatment, and we found that subsequent reactivation of these specific neurons in FOS2A-iCreERT2 (also known as TRAP2) mice replicates the behavioural and thermal component of sickness. In addition, inhibition of LPS-activated neurons diminished all of the behavioural responses to LPS. Single-nucleus RNA sequencing of the NTS–AP was used to identify LPS-activated neural populations, and we found that activation of ADCYAP1+ neurons in the NTS–AP fully recapitulates the responses elicited by LPS. Furthermore, inhibition of these neurons significantly diminished the anorexia, adipsia and locomotor cessation seen after LPS injection. Together these studies map the pleiotropic effects of LPS to a neural population that is both necessary and sufficient for canonical elements of the sickness response, thus establishing a critical link between the brain and the response to infection. A studying using a set of unbiased methodologies shows that a specific subpopulation of neurons in the brainstem can regulate the diverse responses to a bacterial endotoxin that induces sickness behaviours.
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100
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Sperry MM, Novak R, Keshari V, Dinis ALM, Cartwright MJ, Camacho DM, Paré J, Super M, Levin M, Ingber DE. Enhancers of Host Immune Tolerance to Bacterial Infection Discovered Using Linked Computational and Experimental Approaches. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2200222. [PMID: 35706367 PMCID: PMC9475558 DOI: 10.1002/advs.202200222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/10/2022] [Indexed: 05/31/2023]
Abstract
Current therapeutic strategies against bacterial infections focus on reduction of pathogen load using antibiotics; however, stimulation of host tolerance to infection in the presence of pathogens might offer an alternative approach. Computational transcriptomics and Xenopus laevis embryos are used to discover infection response pathways, identify potential tolerance inducer drugs, and validate their ability to induce broad tolerance. Xenopus exhibits natural tolerance to Acinetobacter baumanii, Klebsiella pneumoniae, Staphylococcus aureus, and Streptococcus pneumoniae bacteria, whereas Aeromonas hydrophila and Pseudomonas aeruginosa produce lethal infections. Transcriptional profiling leads to definition of a 20-gene signature that discriminates between tolerant and susceptible states, as well as identification of a more active tolerance response to gram negative compared to gram positive bacteria. Gene pathways associated with active tolerance in Xenopus, including some involved in metal ion binding and hypoxia, are found to be conserved across species, including mammals, and administration of a metal chelator (deferoxamine) or a HIF-1α agonist (1,4-DPCA) in embryos infected with lethal A. hydrophila increased survival despite high pathogen load. These data demonstrate the value of combining the Xenopus embryo infection model with computational multiomics analyses for mechanistic discovery and drug repurposing to induce host tolerance to bacterial infections.
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Affiliation(s)
- Megan M. Sperry
- Wyss Institute for Biologically Inspired Engineering at Harvard UniversityBostonMA02115USA
- Department of BiologyTufts UniversityMedfordMA02155USA
| | - Richard Novak
- Wyss Institute for Biologically Inspired Engineering at Harvard UniversityBostonMA02115USA
- Present address:
Unravel Biosciences, Inc.BostonMA02125USA
| | - Vishal Keshari
- Wyss Institute for Biologically Inspired Engineering at Harvard UniversityBostonMA02115USA
| | - Alexandre L. M. Dinis
- Wyss Institute for Biologically Inspired Engineering at Harvard UniversityBostonMA02115USA
- Present address:
University of Massachusetts Medical SchoolWorcesterMA01655USA
| | - Mark J. Cartwright
- Wyss Institute for Biologically Inspired Engineering at Harvard UniversityBostonMA02115USA
| | - Diogo M. Camacho
- Wyss Institute for Biologically Inspired Engineering at Harvard UniversityBostonMA02115USA
- Present address:
Rheos MedicinesCambridgeMA02142USA
| | - Jean‐François Paré
- Department of BiologyTufts UniversityMedfordMA02155USA
- Present address:
Queen's UniversityKingstonON K7L 3N6Canada
| | - Michael Super
- Wyss Institute for Biologically Inspired Engineering at Harvard UniversityBostonMA02115USA
| | - Michael Levin
- Wyss Institute for Biologically Inspired Engineering at Harvard UniversityBostonMA02115USA
- Department of BiologyTufts UniversityMedfordMA02155USA
- Allen Discovery Center at Tufts UniversityMedfordMA02155USA
| | - Donald E. Ingber
- Wyss Institute for Biologically Inspired Engineering at Harvard UniversityBostonMA02115USA
- Vascular Biology Program and Department of SurgeryBoston Children's Hospital and Harvard Medical SchoolBostonMA02115USA
- Harvard John A. Paulson School of Engineering and Applied SciencesCambridgeMA02138USA
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