1
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Vardam-Kaur T, Banuelos A, Gabaldon-Parish M, Macedo BG, Salgado CL, Wanhainen KM, Zhou MH, van Dijk S, Santiago-Carvalho I, Beniwal AS, Leff CL, Peng C, Tran NL, Jameson SC, Borges da Silva H. The ATP-exporting channel Pannexin 1 promotes CD8 + T cell effector and memory responses. iScience 2024; 27:110290. [PMID: 39045105 PMCID: PMC11263643 DOI: 10.1016/j.isci.2024.110290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 05/17/2024] [Accepted: 06/14/2024] [Indexed: 07/25/2024] Open
Abstract
Sensing of extracellular ATP (eATP) controls CD8+ T cell function. Their accumulation can occur through export by specialized molecules, such as the release channel Pannexin 1 (Panx1). Whether Panx1 controls CD8+ T cell immune responses in vivo, however, has not been previously addressed. Here, we report that T-cell-specific Panx1 is needed for CD8+ T cell responses to viral infections and cancer. We found that CD8-specific Panx1 promotes both effector and memory CD8+ T cell responses. Panx1 favors initial effector CD8+ T cell activation through extracellular ATP (eATP) export and subsequent P2RX4 activation, which helps promote full effector differentiation through extracellular lactate accumulation and its subsequent recycling. In contrast, Panx1 promotes memory CD8+ T cell survival primarily through ATP export and subsequent P2RX7 engagement, leading to improved mitochondrial metabolism. In summary, Panx1-mediated eATP export regulates effector and memory CD8+ T cells through distinct purinergic receptors and different metabolic and signaling pathways.
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Affiliation(s)
- Trupti Vardam-Kaur
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, AZ 85255, USA
| | - Alma Banuelos
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, AZ 85255, USA
| | | | - Bruna Gois Macedo
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, AZ 85255, USA
| | | | | | - Maggie Hanqi Zhou
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, AZ 85255, USA
| | - Sarah van Dijk
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, AZ 85255, USA
| | | | - Angad S. Beniwal
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, AZ 85255, USA
- Department of Cancer Biology, Mayo Clinic Arizona, Scottsdale, AZ 85255, USA
| | - Chloe L. Leff
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, AZ 85255, USA
| | - Changwei Peng
- Center for Immunology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Nhan L. Tran
- Department of Cancer Biology, Mayo Clinic Arizona, Scottsdale, AZ 85255, USA
| | - Stephen C. Jameson
- Center for Immunology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Henrique Borges da Silva
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, AZ 85255, USA
- Department of Cancer Biology, Mayo Clinic Arizona, Scottsdale, AZ 85255, USA
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2
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Bouzari B, Chugaeva UY, Karampoor S, Mirzaei R. Immunometabolites in viral infections: Action mechanism and function. J Med Virol 2024; 96:e29807. [PMID: 39037069 DOI: 10.1002/jmv.29807] [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: 01/18/2024] [Revised: 05/10/2024] [Accepted: 07/05/2024] [Indexed: 07/23/2024]
Abstract
The interplay between viral pathogens and host metabolism plays a pivotal role in determining the outcome of viral infections. Upon viral detection, the metabolic landscape of the host cell undergoes significant changes, shifting from oxidative respiration via the tricarboxylic acid (TCA) cycle to increased aerobic glycolysis. This metabolic shift is accompanied by elevated nutrient accessibility, which is vital for cell function, development, and proliferation. Furthermore, depositing metabolites derived from fatty acids, TCA intermediates, and amino acid catabolism accelerates the immunometabolic transition, facilitating pro-inflammatory and antimicrobial responses. Immunometabolites refer to small molecules involved in cellular metabolism regulating the immune response. These molecules include nutrients, such as glucose and amino acids, along with metabolic intermediates and signaling molecules adenosine, lactate, itaconate, succinate, kynurenine, and prostaglandins. Emerging evidence suggests that immunometabolites released by immune cells establish a complex interaction network within local niches, orchestrating and fine-tuning immune responses during viral diseases. However, our current understanding of the immense capacity of metabolites to convey essential cell signals from one cell to another or within cellular compartments remains incomplete. Unraveling these complexities would be crucial for harnessing the potential of immunometabolites in therapeutic interventions. In this review, we discuss specific immunometabolites and their mechanisms of action in viral infections, emphasizing recent findings and future directions in this rapidly evolving field.
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Affiliation(s)
- Behnaz Bouzari
- Department of Pathology, Firouzgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Uliana Y Chugaeva
- Department of Pediatric, Preventive Dentistry and Orthodontics, Institute of Dentistry, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Sajad Karampoor
- Gastrointestinal and Liver Diseases Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Rasoul Mirzaei
- Venom and Biotherapeutics Molecules Lab, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
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3
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Stauffer PE, Brinkley J, Jacobson DA, Quaranta V, Tyson DR. Purinergic Ca 2+ Signaling as a Novel Mechanism of Drug Tolerance in BRAF-Mutant Melanoma. Cancers (Basel) 2024; 16:2426. [PMID: 39001489 PMCID: PMC11240618 DOI: 10.3390/cancers16132426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 06/27/2024] [Accepted: 06/27/2024] [Indexed: 07/16/2024] Open
Abstract
Drug tolerance is a major cause of relapse after cancer treatment. Despite intensive efforts, its molecular basis remains poorly understood, hampering actionable intervention. We report a previously unrecognized signaling mechanism supporting drug tolerance in BRAF-mutant melanoma treated with BRAF inhibitors that could be of general relevance to other cancers. Its key features are cell-intrinsic intracellular Ca2+ signaling initiated by P2X7 receptors (purinergic ligand-gated cation channels) and an enhanced ability for these Ca2+ signals to reactivate ERK1/2 in the drug-tolerant state. Extracellular ATP, virtually ubiquitous in living systems, is the ligand that can initiate Ca2+ spikes via P2X7 channels. ATP is abundant in the tumor microenvironment and is released by dying cells, ironically implicating treatment-initiated cancer cell death as a source of trophic stimuli that leads to ERK reactivation and drug tolerance. Such a mechanism immediately offers an explanation of the inevitable relapse after BRAFi treatment in BRAF-mutant melanoma and points to actionable strategies to overcome it.
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Affiliation(s)
- Philip E. Stauffer
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Jordon Brinkley
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - David A. Jacobson
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN 37232, USA;
| | - Vito Quaranta
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Darren R. Tyson
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
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4
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Sierra-Marquez J, Schaller L, Sassenbach L, Ramírez-Fernández A, Alt P, Rissiek B, Zimmer B, Schredelseker J, Hector J, Stähler T, Koch-Nolte F, Staab-Weijnitz CA, Dietrich A, Kopp R, Nicke A. Different localization of P2X4 and P2X7 receptors in native mouse lung - lack of evidence for a direct P2X4-P2X7 receptor interaction. Front Immunol 2024; 15:1425938. [PMID: 38953020 PMCID: PMC11215518 DOI: 10.3389/fimmu.2024.1425938] [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: 04/30/2024] [Accepted: 05/28/2024] [Indexed: 07/03/2024] Open
Abstract
Introduction P2X receptors are a family of homo- and heterotrimeric cation channels gated by extracellular ATP. The P2X4 and P2X7 subunits show overlapping expression patterns and have been involved in similar physiological processes, such as pain and inflammation as well as various immune cell functions. While formation of P2X2/P2X3 heterotrimers produces a distinct pharmacological phenotype and has been well established, functional identification of a P2X4/P2X7 heteromer has been difficult and evidence for and against a physical association has been found. Most of this evidence stems, however, from in vitro model systems. Methods Here, we used a P2X7-EGFP BAC transgenic mouse model as well as P2X4 and P2X7 knock-out mice to re-investigate a P2X4-P2X7 interaction in mouse lung by biochemical and immunohistochemical experiments as well as quantitative expression analysis. Results No detectable amounts of P2X4 could be co-purified from mouse lung via P2X7-EGFP. In agreement with these findings, immuno-histochemical analysis using a P2X7-specific nanobody revealed only limited overlap in the cellular and subcellular localizations of P2X4 and P2X7 in both the native lung tissue and primary cells. Comparison of P2X4 and P2X7 transcript and protein levels in the respective gene-deficient and wild type mice showed no mutual interrelation between their expression levels in whole lungs. However, a significantly reduced P2rx7 expression was found in alveolar macrophages of P2rx4 -/- mice. Discussion In summary, our detailed analysis of the cellular and subcellular P2X4 and P2X7 localization and expression does not support a physiologically relevant direct association of P2X4 and P2X7 subunits or receptors in vivo.
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Affiliation(s)
- Juan Sierra-Marquez
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research (DZL), Faculty of Medicine, LMU Munich, Munich, Germany
| | - Lena Schaller
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research (DZL), Faculty of Medicine, LMU Munich, Munich, Germany
| | - Lukas Sassenbach
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research (DZL), Faculty of Medicine, LMU Munich, Munich, Germany
| | - Antonio Ramírez-Fernández
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research (DZL), Faculty of Medicine, LMU Munich, Munich, Germany
| | - Philipp Alt
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research (DZL), Faculty of Medicine, LMU Munich, Munich, Germany
| | - Björn Rissiek
- Department of Neurology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Béla Zimmer
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research (DZL), Faculty of Medicine, LMU Munich, Munich, Germany
| | - Johann Schredelseker
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research (DZL), Faculty of Medicine, LMU Munich, Munich, Germany
- Deutsches Zentrum für Herz-Kreislauf-Forschung, Partner Site Munich Heart Alliance, Munich, Germany
| | - Julia Hector
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research (DZL), Faculty of Medicine, LMU Munich, Munich, Germany
| | - Tobias Stähler
- Institute of Immunology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Friedrich Koch-Nolte
- Institute of Immunology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Claudia A. Staab-Weijnitz
- Institute of Lung Health and Immunity (LHI), Helmholtz Munich, Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL), Germany
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Alexander Dietrich
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research (DZL), Faculty of Medicine, LMU Munich, Munich, Germany
| | - Robin Kopp
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research (DZL), Faculty of Medicine, LMU Munich, Munich, Germany
| | - Annette Nicke
- Walther Straub Institute of Pharmacology and Toxicology, Member of the German Center for Lung Research (DZL), Faculty of Medicine, LMU Munich, Munich, Germany
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5
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Gao Y, Liu S, Huang Y, Li F, Zhang Y. Regulation of anti-tumor immunity by metal ion in the tumor microenvironment. Front Immunol 2024; 15:1379365. [PMID: 38915413 PMCID: PMC11194341 DOI: 10.3389/fimmu.2024.1379365] [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: 01/31/2024] [Accepted: 05/29/2024] [Indexed: 06/26/2024] Open
Abstract
Metal ions play an essential role in regulating the functions of immune cells by transmitting intracellular and extracellular signals in tumor microenvironment (TME). Among these immune cells, we focused on the impact of metal ions on T cells because they can recognize and kill cancer cells and play an important role in immune-based cancer treatment. Metal ions are often used in nanomedicines for tumor immunotherapy. In this review, we discuss seven metal ions related to anti-tumor immunity, elucidate their roles in immunotherapy, and provide novel insights into tumor immunotherapy and clinical applications.
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Affiliation(s)
- Yaoxin Gao
- Biotherapy Center & Cancer Center, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shasha Liu
- Biotherapy Center & Cancer Center, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yifan Huang
- Biotherapy Center & Cancer Center, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Feng Li
- Biotherapy Center & Cancer Center, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yi Zhang
- Biotherapy Center & Cancer Center, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, China
- School of Public Health, Zhengzhou University, Zhengzhou, China
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6
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Diercks BP. The importance of Ca 2+ microdomains for the adaptive immune response. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119710. [PMID: 38522726 DOI: 10.1016/j.bbamcr.2024.119710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/12/2024] [Accepted: 03/17/2024] [Indexed: 03/26/2024]
Abstract
Calcium signaling stands out as the most widespread and universally used signaling system and is of utmost importance for immunity. Controlled elevations in cytosolic and organellar Ca2+ concentrations in T cells control complex and essential effector functions including proliferation, differentiation, cytokine secretion, and cytotoxicity, among others. Additionally, disruptions in Ca2+ regulation in T cells contribute to diverse autoimmune, inflammatory, and immunodeficiency conditions. Among the initial intracellular signals, which occurring even before T cell receptor (TCR) stimulation are highly localized, spatially and temporally restricted so-called Ca2+ microdomains, caused by adhesion to extracellular matrix proteins (ECM proteins). The Ca2+ microdomains present both before and within the initial seconds following TCR stimulation are likely to play a crucial role in fine-tuning the downstream activity of T cell activation and thus, shaping an adaptive immune response. In this review, the emphasis is on the recent advances of adhesion-dependent Ca2+ microdomains (ADCM) in the absence of TCR stimulation, initial Ca2+ microdomains evoked by TCR stimulation (TDCM), the downstream signaling processes as well as possible therapeutic targets for interventions.
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Affiliation(s)
- Björn-Philipp Diercks
- The Calcium Signalling Group, Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany.
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7
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Rao R, Mohammed C, Alschuler L, Pomeranz Krummel DA, Sengupta S. Phytochemical Modulation of Ion Channels in Oncologic Symptomatology and Treatment. Cancers (Basel) 2024; 16:1786. [PMID: 38730738 PMCID: PMC11083444 DOI: 10.3390/cancers16091786] [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: 03/29/2024] [Revised: 04/24/2024] [Accepted: 05/04/2024] [Indexed: 05/13/2024] Open
Abstract
Modern chemotherapies offer a broad approach to cancer treatment but eliminate both cancer and non-cancer cells indiscriminately and, thus, are associated with a host of side effects. Advances in precision oncology have brought about new targeted therapeutics, albeit mostly limited to a subset of patients with an actionable mutation. They too come with side effects and, ultimately, 'self-resistance' to the treatment. There is recent interest in the modulation of ion channels, transmembrane proteins that regulate the flow of electrically charged molecules in and out of cells, as an approach to aid treatment of cancer. Phytochemicals have been shown to act on ion channels with high specificity regardless of the tumor's genetic profile. This paper explores the use of phytochemicals in cancer symptom management and treatment.
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Affiliation(s)
- Rohan Rao
- Department of Neurology & Rehabilitation Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Caroline Mohammed
- Department of Neurology, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - Lise Alschuler
- Andrew Weil Center for Integrative Medicine, University of Arizona College of Medicine, Tucson, AZ 85719, USA
| | - Daniel A. Pomeranz Krummel
- Department of Neurosurgery, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - Soma Sengupta
- Department of Neurology, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
- Department of Neurosurgery, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
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8
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Li R, Lei Y, Rezk A, Diego A Espinoza, Wang J, Feng H, Zhang B, Barcelos IP, Zhang H, Yu J, Huo X, Zhu F, Yang C, Tang H, Goldstein AC, Banwell BL, Hakonarson H, Xu H, Mingueneau M, Sun B, Li H, Bar-Or A. Oxidative phosphorylation regulates B cell effector cytokines and promotes inflammation in multiple sclerosis. Sci Immunol 2024; 9:eadk0865. [PMID: 38701189 DOI: 10.1126/sciimmunol.adk0865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 04/10/2024] [Indexed: 05/05/2024]
Abstract
Dysregulated B cell cytokine production contributes to pathogenesis of immune-mediated diseases including multiple sclerosis (MS); however, the underlying mechanisms are poorly understood. In this study we investigated how cytokine secretion by pro-inflammatory (GM-CSF-expressing) and anti-inflammatory (IL-10-expressing) B cells is regulated. Pro-inflammatory human B cells required increased oxidative phosphorylation (OXPHOS) compared with anti-inflammatory B cells. OXPHOS reciprocally modulated pro- and anti-inflammatory B cell cytokines through regulation of adenosine triphosphate (ATP) signaling. Partial inhibition of OXPHOS or ATP-signaling including with BTK inhibition resulted in an anti-inflammatory B cell cytokine shift, reversed the B cell cytokine imbalance in patients with MS, and ameliorated neuroinflammation in a myelin oligodendrocyte glycoprotein (MOG)-induced experimental autoimmune encephalitis mouse model. Our study identifies how pro- and anti-inflammatory cytokines are metabolically regulated in B cells and identifies ATP and its metabolites as a "fourth signal" that shapes B cell responses and is a potential target for restoring the B cell cytokine balance in autoimmune diseases.
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Affiliation(s)
- Rui Li
- Center for Neuroinflammation and Experimental Therapeutics and the Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- Institute of Immunotherapy and Department of Neurology of First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian 350005, China
| | - Yanting Lei
- Department of Neurobiology, Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Ayman Rezk
- Center for Neuroinflammation and Experimental Therapeutics and the Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Diego A Espinoza
- Center for Neuroinflammation and Experimental Therapeutics and the Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jing Wang
- Department of Neurobiology, Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Huiru Feng
- Institute of Immunotherapy and Department of Neurology of First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian 350005, China
| | - Bo Zhang
- Institute of Immunotherapy and Department of Neurology of First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian 350005, China
| | - Isabella P Barcelos
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Hang Zhang
- Department of Immunology, Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Jing Yu
- Department of Neurobiology, Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Xinrui Huo
- Department of Neurobiology, Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Fangyi Zhu
- Department of Neurobiology, Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Changxin Yang
- Department of Neurobiology, Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Hao Tang
- MS Research Unit, Biogen, Cambridge, MA 02142, USA
| | - Amy C Goldstein
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Brenda L Banwell
- Division of Neurology, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Hakon Hakonarson
- Center for Applied Genomics, Division of Human Genetics, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Hongwei Xu
- Department of Immunology, Harbin Medical University, Harbin, Heilongjiang 150086, China
| | | | - Bo Sun
- Department of Neurobiology, Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Hulun Li
- Department of Neurobiology, Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Amit Bar-Or
- Center for Neuroinflammation and Experimental Therapeutics and the Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
- MS Research Unit, Biogen, Cambridge, MA 02142, USA
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9
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Vardam-Kaur T, Banuelos A, Gabaldon-Parish M, Macedo BG, Salgado CL, Wanhainen KM, Zhou MH, van Dijk S, Santiago-Carvalho I, Beniwal AS, Leff CL, Peng C, Tran NL, Jameson SC, da Silva HB. The ATP-exporting channel Pannexin-1 promotes CD8 + T cell effector and memory responses. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.04.19.537580. [PMID: 37131831 PMCID: PMC10153284 DOI: 10.1101/2023.04.19.537580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Sensing of extracellular ATP (eATP) controls CD8+ T cell function. Their accumulation can occur through export by specialized molecules, such as the release channel Pannexin-1 (Panx1). Whether Panx1 controls CD8+ T cell immune responses in vivo, however, has not been previously addressed. Here, we report that T cell-specific Panx1 is needed for CD8+ T cell responses to viral infections and cancer. We found that CD8-specific Panx1 promotes both effector and memory CD8+ T cell responses. Panx1 favors initial effector CD8+ T cell activation through extracellular ATP (eATP) export and subsequent P2RX4 activation, which helps promote full effector differentiation through extracellular lactate accumulation and its subsequent recycling. In contrast, Panx1 promotes memory CD8+ T cell survival primarily through ATP export and subsequent P2RX7 engagement, leading to improved mitochondrial metabolism. In summary, Panx1-mediated eATP export regulates effector and memory CD8+ T cells through distinct purinergic receptors and different metabolic and signaling pathways.
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Affiliation(s)
- Trupti Vardam-Kaur
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, Arizona, United States
- Current address: Omeros Corporation, Seattle, Washington, United States
| | - Alma Banuelos
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, Arizona, United States
| | - Maria Gabaldon-Parish
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, Arizona, United States
- Current address: University of New Mexico, Albuquerque, New Mexico, United States
| | - Bruna Gois Macedo
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, Arizona, United States
| | | | | | - Maggie Hanqi Zhou
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, Arizona, United States
| | - Sarah van Dijk
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, Arizona, United States
- Current address: Biomedical Sciences Graduate Program, University of California, San Diego, California, United States
| | | | - Angad S. Beniwal
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, Arizona, United States
- Department of Cancer Biology, Mayo Clinic Arizona, Scottsdale, Arizona, United States
| | - Chloe L. Leff
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, Arizona, United States
| | - Changwei Peng
- Center for Immunology, University of Minnesota, Minneapolis, Minnesota, United States
- Current address: Department of Immunology & HMS Center for Immune Imaging, Harvard Medical School, Boston, Massachusetts, United States
| | - Nhan L. Tran
- Department of Cancer Biology, Mayo Clinic Arizona, Scottsdale, Arizona, United States
| | - Stephen C. Jameson
- Center for Immunology, University of Minnesota, Minneapolis, Minnesota, United States
| | - Henrique Borges da Silva
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, Arizona, United States
- Department of Cancer Biology, Mayo Clinic Arizona, Scottsdale, Arizona, United States
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10
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Reel JM, Abbadi J, Cox MA. T cells at the interface of neuroimmune communication. J Allergy Clin Immunol 2024; 153:894-903. [PMID: 37952833 PMCID: PMC10999355 DOI: 10.1016/j.jaci.2023.10.026] [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: 09/19/2023] [Revised: 10/12/2023] [Accepted: 10/24/2023] [Indexed: 11/14/2023]
Abstract
The immune system protects the host from infection and works to heal damaged tissue after infection or injury. There is increasing evidence that the immune system and the nervous system work in concert to achieve these goals. The sensory nervous system senses injury, infection, and inflammation, which results in a direct pain signal. Direct activation of peripheral sensory nerves can drive an inflammatory response in the skin. Immune cells express receptors for numerous transmitters released from sensory and autonomic nerves, which allows the nervous system to communicate directly with the immune system. This communication is bidirectional because immune cells can also produce neurotransmitters. Both innate and adaptive immune cells respond to neuronal signaling, but T cells appear to be at the helm of neuroimmune communication.
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Affiliation(s)
- Jessica M Reel
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, Okla
| | - Jumana Abbadi
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, Okla
| | - Maureen A Cox
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, Okla; Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, Okla.
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11
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Ng HY, Liao Y, Zhang R, Chan KH, To WP, Hui CH, Seto WK, Leung WK, Hung IFN, Lam TTY, Cheung KS. The Predictive Value of Gut Microbiota Composition for Sustained Immunogenicity following Two Doses of CoronaVac. Int J Mol Sci 2024; 25:2583. [PMID: 38473829 DOI: 10.3390/ijms25052583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/14/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
CoronaVac immunogenicity decreases with time, and we aimed to investigate whether gut microbiota associate with longer-term immunogenicity of CoronaVac. This was a prospective cohort study recruiting two-dose CoronaVac recipients from three centres in Hong Kong. We collected blood samples at baseline and day 180 after the first dose and used chemiluminescence immunoassay to test for neutralizing antibodies (NAbs) against the receptor-binding domain (RBD) of wild-type SARS-CoV-2 virus. We performed shotgun metagenomic sequencing performed on baseline stool samples. The primary outcome was the NAb seroconversion rate (seropositivity defined as NAb ≥ 15AU/mL) at day 180. Linear discriminant analysis [LDA] effect size analysis was used to identify putative bacterial species and metabolic pathways. A univariate logistic regression model was used to derive the odds ratio (OR) of seropositivity with bacterial species. Of 119 CoronaVac recipients (median age: 53.4 years [IQR: 47.8-61.3]; male: 39 [32.8%]), only 8 (6.7%) remained seropositive at 6 months after vaccination. Bacteroides uniformis (log10LDA score = 4.39) and Bacteroides eggerthii (log10LDA score = 3.89) were significantly enriched in seropositive than seronegative participants. Seropositivity was associated with B. eggerthii (OR: 5.73; 95% CI: 1.32-29.55; p = 0.022) and B. uniformis with borderline significance (OR: 3.27; 95% CI: 0.73-14.72; p = 0.110). Additionally, B. uniformis was positively correlated with most enriched metabolic pathways in seropositive vaccinees, including the superpathway of adenosine nucleotide de novo biosynthesis I (log10LDA score = 2.88) and II (log10LDA score = 2.91), as well as pathways related to vitamin B biosynthesis, all of which are known to promote immune functions. In conclusion, certain gut bacterial species (B. eggerthii and B. uniformis) and metabolic pathways were associated with longer-term CoronaVac immunogenicity.
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Affiliation(s)
- Ho-Yu Ng
- School of Clinical Medicine, The University of Hong Kong, Hong Kong
| | - Yunshi Liao
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Ruiqi Zhang
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Kwok-Hung Chan
- Department of Microbiology, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Wai-Pan To
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Chun-Him Hui
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Wai-Kay Seto
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Wai K Leung
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Ivan F N Hung
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
| | - Tommy T Y Lam
- State Key Laboratory of Emerging Infectious Diseases, School of Public Health, The University of Hong Kong, Hong Kong
- Centre for Immunology & Infection Ltd., 17W Hong Kong Science & Technology Parks, Hong Kong
- Laboratory of Data Discovery for Health Ltd., 19W Hong Kong Science & Technology Parks, Hong Kong
- School of Public Health, The University of Hong Kong, Hong Kong
| | - Ka-Shing Cheung
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong
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12
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Müller WEG, Neufurth M, Wang S, Schröder HC, Wang X. The Physiological Inorganic Polymers Biosilica and Polyphosphate as Key Drivers for Biomedical Materials in Regenerative Nanomedicine. Int J Nanomedicine 2024; 19:1303-1337. [PMID: 38348175 PMCID: PMC10860874 DOI: 10.2147/ijn.s446405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/18/2024] [Indexed: 02/15/2024] Open
Abstract
There is a need for novel nanomaterials with properties not yet exploited in regenerative nanomedicine. Based on lessons learned from the oldest metazoan phylum, sponges, it has been recognized that two previously ignored or insufficiently recognized principles play an essential role in tissue regeneration, including biomineral formation/repair and wound healing. Firstly, the dependence on enzymes as a driving force and secondly, the availability of metabolic energy. The discovery of enzymatic synthesis and regenerative activity of amorphous biosilica that builds the mineral skeleton of siliceous sponges formed the basis for the development of successful strategies for the treatment of osteochondral impairments in humans. In addition, the elucidation of the functional significance of a second regeneratively active inorganic material, namely inorganic polyphosphate (polyP) and its amorphous nanoparticles, present from sponges to humans, has pushed forward the development of innovative materials for both soft (skin, cartilage) and hard tissue (bone) repair. This energy-rich molecule exhibits a property not shown by any other biopolymer: the delivery of metabolic energy, even extracellularly, necessary for the ATP-dependent tissue regeneration. This review summarizes the latest developments in nanobiomaterials based on these two evolutionarily old, regeneratively active materials, amorphous silica and amorphous polyP, highlighting their specific, partly unique properties and mode of action, and discussing their possible applications in human therapy. The results of initial proof-of-concept studies on patients demonstrating complete healing of chronic wounds are outlined.
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Affiliation(s)
- Werner E G Müller
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Meik Neufurth
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Shunfeng Wang
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Heinz C Schröder
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Xiaohong Wang
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
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13
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Grassi F, Marino R. The P2X7 receptor in mucosal adaptive immunity. Purinergic Signal 2024; 20:9-19. [PMID: 37067746 PMCID: PMC10828151 DOI: 10.1007/s11302-023-09939-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/31/2023] [Indexed: 04/18/2023] Open
Abstract
The P2X7 receptor (P2X7R) is a widely distributed cation channel activated by extracellular ATP (eATP) with exclusive peculiarities with respect to other P2XRs. In recent years, P2X7R has been shown to regulate the adaptive immune response by conditioning T cell signaling and activation as well as polarization, lineage stability, cell death, and function in tissues. Here we revise experimental observations in this field, with a focus on adaptive immunity at mucosal sites, particularly in the gut, where eATP is hypothesized to act in the reciprocal conditioning of the host immune system and commensal microbiota to promote mutualism. The importance of P2X7R activity in the intestine is consistent with the transcriptional upregulation of P2xr7 gene by retinoic acid, a metabolite playing a key role in mucosal immunity. We emphasize the function of the eATP/P2X7R axis in controlling T follicular helper (Tfh) cell in the gut-associated lymphoid tissue (GALT) and, consequently, T-dependent secretory IgA (SIgA), with a focus on high-affinity SIgA-mediated protection from enteropathogens and shaping of a beneficial microbiota for the host.
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Affiliation(s)
- Fabio Grassi
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università Della Svizzera Italiana, 6500, Bellinzona, Switzerland.
| | - Rebecca Marino
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università Della Svizzera Italiana, 6500, Bellinzona, Switzerland
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14
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Fukuyama K, Motomura E, Okada M. Age-Dependent Activation of Pannexin1 Function Contributes to the Development of Epileptogenesis in Autosomal Dominant Sleep-related Hypermotor Epilepsy Model Rats. Int J Mol Sci 2024; 25:1619. [PMID: 38338895 PMCID: PMC10855882 DOI: 10.3390/ijms25031619] [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: 01/12/2024] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/12/2024] Open
Abstract
To explore the processes of epileptogenesis/ictogenesis, this study determined the age-dependent development of the functional abnormalities in astroglial transmission associated with pannexin1-hemichannel using a genetic rat model of autosomal dominant sleep-related hypermotor epilepsy (ADSHE) named 'S286L-TG'. Pannexin1 expression in the plasma membrane of primary cultured cortical astrocytes and the orbitofrontal cortex (OFC), which is an ADSHE focus region, were determined using capillary immunoblotting. Astroglial D-serine releases induced by artificial high-frequency oscillation (HFO)-evoked stimulation, the removal of extracellular Ca2+, and the P2X7 receptor agonist (BzATP) were determined using ultra-high performance liquid chromatography (UHPLC). The expressions of pannexin1 in the plasma membrane fraction of the OFC in S286L-TG at four weeks old were almost equivalent when compared to the wild type. The pannexin1 expression in the OFC of the wild type non-statistically decreased age-dependently, whereas that in S286L-TG significantly increased age-dependently, resulting in relatively increasing pannexin1 expression from the 7- (at the onset of interictal discharge) and 10-week-old (after the ADSHE seizure onset) S286L-TG compared to the wild type. However, no functional abnormalities of astroglial pannexin1 expression or D-serine release through the pannexin1-hemichannels from the cultured astrocytes of S286L-TG could be detected. Acutely HFO-evoked stimulation, such as physiological ripple burst (200 Hz) and epileptogenic fast ripple burst (500 Hz), frequency-dependently increased both pannexin1 expression in the astroglial plasma membrane and astroglial D-serine release. Neither the selective inhibitors of pannexin1-hemichannel (10PANX) nor connexin43-hemichannel (Gap19) affected astroglial D-serine release during the resting stage, whereas HFO-evoked D-serine release was suppressed by both inhibitors. The inhibitory effect of 10PANX on the ripple burst-evoked D-serine release was more predominant than that of Gap19, whereas fast ripple burst-evoked D-serine release was predominantly suppressed by Gap19 rather than 10PANX. Astroglial D-serine release induced by acute exposure to BzATP was suppressed by 10PANX but not by Gap19. These results suggest that physiological ripple burst during the sleep spindle plays important roles in the organization of some components of cognition in healthy individuals, but conversely, it contributes to the initial development of epileptogenesis/ictogenesis in individuals who have ADSHE vulnerability via activation of the astroglial excitatory transmission associated with pannexin1-hemichannels.
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Affiliation(s)
| | | | - Motohiro Okada
- Department of Neuropsychiatry, Division of Neuroscience, Graduate School of Medicine, Mie University, Tsu 514-8507, Japan; (K.F.); (E.M.)
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15
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Sánchez-Quintero MJ, Rodríguez-Díaz C, Rodríguez-González FJ, Fernández-Castañer A, García-Fuentes E, López-Gómez C. Role of Mitochondria in Inflammatory Bowel Diseases: A Systematic Review. Int J Mol Sci 2023; 24:17124. [PMID: 38069446 PMCID: PMC10707203 DOI: 10.3390/ijms242317124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 11/27/2023] [Accepted: 11/30/2023] [Indexed: 12/18/2023] Open
Abstract
Mitochondria are key cellular organelles whose main function is maintaining cell bioenergetics by producing ATP through oxidative phosphorylation. However, mitochondria are involved in a much higher number of cellular processes. Mitochondria are the home of key metabolic pathways like the tricarboxylic acid cycle and β-oxidation of fatty acids, as well as biosynthetic pathways of key products like nucleotides and amino acids, the control of the redox balance of the cell and detoxifying the cell from H2S and NH3. This plethora of critical functions within the cell is the reason mitochondrial function is involved in several complex disorders (apart from pure mitochondrial disorders), among them inflammatory bowel diseases (IBD). IBD are a group of chronic, inflammatory disorders of the gut, mainly composed of ulcerative colitis and Crohn's disease. In this review, we present the current knowledge regarding the impact of mitochondrial dysfunction in the context of IBD. The role of mitochondria in both intestinal mucosa and immune cell populations are discussed, as well as the role of mitochondrial function in mechanisms like mucosal repair, the microbiota- and brain-gut axes and the development of colitis-associated colorectal cancer.
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Affiliation(s)
- María José Sánchez-Quintero
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29590 Málaga, Spain; (M.J.S.-Q.); (C.R.-D.); (A.F.-C.)
- Unidad de Gestión Clínica Cardiología y Cirugía Cardiovascular, Hospital Universitario Virgen de la Victoria, 29010 Málaga, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Cristina Rodríguez-Díaz
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29590 Málaga, Spain; (M.J.S.-Q.); (C.R.-D.); (A.F.-C.)
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, 29010 Málaga, Spain
| | - Francisco J. Rodríguez-González
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29590 Málaga, Spain; (M.J.S.-Q.); (C.R.-D.); (A.F.-C.)
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, 29010 Málaga, Spain
| | - Alejandra Fernández-Castañer
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29590 Málaga, Spain; (M.J.S.-Q.); (C.R.-D.); (A.F.-C.)
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, 29010 Málaga, Spain
| | - Eduardo García-Fuentes
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29590 Málaga, Spain; (M.J.S.-Q.); (C.R.-D.); (A.F.-C.)
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, 29010 Málaga, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Carlos López-Gómez
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29590 Málaga, Spain; (M.J.S.-Q.); (C.R.-D.); (A.F.-C.)
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, 29010 Málaga, Spain
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16
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Hernandez CA, Eugenin EA. The role of Pannexin-1 channels, ATP, and purinergic receptors in the pathogenesis of HIV and SARS-CoV-2. Curr Opin Pharmacol 2023; 73:102404. [PMID: 37734241 PMCID: PMC10838406 DOI: 10.1016/j.coph.2023.102404] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 08/25/2023] [Indexed: 09/23/2023]
Abstract
Infectious agents such as human immune deficiency virus-1 (HIV) and severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) use host proteins to infect, replicate, and induce inflammation within the host. A critical component of these diseases is the axis between pannexin-1 channels, extracellular ATP, and purinergic receptors. Here, we describe the potential therapeutic role of Pannexin-1/purinergic approaches to prevent or reduce the devastating consequences of these pathogens.
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Affiliation(s)
- Cristian A Hernandez
- Department of Neurobiology, The University of Texas Medical Branch (UTMB), Galveston, TX, USA
| | - Eliseo A Eugenin
- Department of Neurobiology, The University of Texas Medical Branch (UTMB), Galveston, TX, USA.
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17
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Santiago-Carvalho I, Almeida-Santos G, Macedo BG, Barbosa-Bomfim CC, Almeida FM, Pinheiro Cione MV, Vardam-Kaur T, Masuda M, Van Dijk S, Melo BM, Silva do Nascimento R, da Conceição Souza R, Peixoto-Rangel AL, Coutinho-Silva R, Hirata MH, Alves-Filho JC, Álvarez JM, Lassounskaia E, Borges da Silva H, D'Império-Lima MR. T cell-specific P2RX7 favors lung parenchymal CD4 + T cell accumulation in response to severe lung infections. Cell Rep 2023; 42:113448. [PMID: 37967010 PMCID: PMC10841667 DOI: 10.1016/j.celrep.2023.113448] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 08/07/2023] [Accepted: 11/01/2023] [Indexed: 11/17/2023] Open
Abstract
CD4+ T cells are key components of the immune response during lung infections and can mediate protection against tuberculosis (TB) or influenza. However, CD4+ T cells can also promote lung pathology during these infections, making it unclear how these cells control such discrepant effects. Using mouse models of hypervirulent TB and influenza, we observe that exaggerated accumulation of parenchymal CD4+ T cells promotes lung damage. Low numbers of lung CD4+ T cells, in contrast, are sufficient to protect against hypervirulent TB. In both situations, lung CD4+ T cell accumulation is mediated by CD4+ T cell-specific expression of the extracellular ATP (eATP) receptor P2RX7. P2RX7 upregulation in lung CD4+ T cells promotes expression of the chemokine receptor CXCR3, favoring parenchymal CD4+ T cell accumulation. Our findings suggest that direct sensing of lung eATP by CD4+ T cells is critical to induce tissue CD4+ T cell accumulation and pathology during lung infections.
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Affiliation(s)
- Igor Santiago-Carvalho
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP 05508-000, Brazil; Department of Immunology, Mayo Clinic, Scottsdale, AZ 85259, USA
| | - Gislane Almeida-Santos
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP 05508-000, Brazil
| | | | - Caio Cesar Barbosa-Bomfim
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP 05508-000, Brazil
| | - Fabricio Moreira Almeida
- Laboratory of Biology of Recognition, North Fluminense State University, Campos, RJ 28013-602, Brazil
| | | | | | - Mia Masuda
- Department of Immunology, Mayo Clinic, Scottsdale, AZ 85259, USA
| | - Sarah Van Dijk
- Department of Immunology, Mayo Clinic, Scottsdale, AZ 85259, USA
| | - Bruno Marcel Melo
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP 14040-900, Brazil
| | - Rogério Silva do Nascimento
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP 05508-000, Brazil
| | - Rebeka da Conceição Souza
- Laboratory of Biology of Recognition, North Fluminense State University, Campos, RJ 28013-602, Brazil
| | | | - Robson Coutinho-Silva
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil
| | - Mario Hiroyuki Hirata
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, SP 05508-000, Brazil
| | - José Carlos Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP 14040-900, Brazil
| | - José Maria Álvarez
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP 05508-000, Brazil
| | - Elena Lassounskaia
- Laboratory of Biology of Recognition, North Fluminense State University, Campos, RJ 28013-602, Brazil
| | | | - Maria Regina D'Império-Lima
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP 05508-000, Brazil.
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18
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Fotino C, Molano RD, Ben Nasr M, Umland O, Fraker CA, Ulissi U, Balasubramanian HB, Lunati ME, Usuelli V, Seelam AJ, Khalefa SA, La Sala C, Gimeno J, Mendez AJ, Ricordi C, Bayer AL, Fiorina P, Pileggi A. Reversal of Experimental Autoimmune Diabetes With an sCD39/Anti-CD3 Treatment. Diabetes 2023; 72:1641-1651. [PMID: 37625134 PMCID: PMC10588287 DOI: 10.2337/db23-0178] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023]
Abstract
Extracellular (e)ATP, a potent proinflammatory molecule, is released by dying/damaged cells at the site of inflammation and is degraded by the membrane ectonucleotidases CD39 and CD73. In this study, we sought to unveil the role of eATP degradation in autoimmune diabetes. We then assessed the effect of soluble CD39 (sCD39) administration in prevention and reversal studies in NOD mice as well as in mechanistic studies. Our data showed that eATP levels were increased in hyperglycemic NOD mice compared with prediabetic NOD mice. CD39 and CD73 were found expressed by both α- and β-cells and by different subsets of T cells. Importantly, prediabetic NOD mice displayed increased frequencies of CD3+CD73+CD39+ cells within their pancreata, pancreatic lymph nodes, and spleens. The administration of sCD39 into prediabetic NOD mice reduced their eATP levels, abrogated the proliferation of CD4+- and CD8+-autoreactive T cells, and increased the frequency of regulatory T cells, while delaying the onset of T1D. Notably, concomitant administration of sCD39 and anti-CD3 showed a strong synergism in restoring normoglycemia in newly hyperglycemic NOD mice compared with monotherapy with anti-CD3 or with sCD39. The eATP/CD39 pathway plays an important role in the onset of T1D, and its targeting might represent a potential therapeutic strategy in T1D. ARTICLE HIGHLIGHTS
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Affiliation(s)
- Carmen Fotino
- Cell Transplant Center, Diabetes Research Institute, University of Miami, Miami, FL
| | - R. Damaris Molano
- Cell Transplant Center, Diabetes Research Institute, University of Miami, Miami, FL
| | - Moufida Ben Nasr
- International Center for T1D, Pediatric Clinical Research Center “Romeo ed Enrica Invernizzi,” Department of Biomedical and Clinical Science L. Sacco, University of Milan, Milan, Italy
- Nephrology Division, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Oliver Umland
- Cell Transplant Center, Diabetes Research Institute, University of Miami, Miami, FL
| | - Christopher A. Fraker
- Cell Transplant Center, Diabetes Research Institute, University of Miami, Miami, FL
- Division of Cellular Transplantation, DeWitt Daughtry Department of Surgery, Miller School of Medicine, University of Miami, Miami, FL
| | - Ulisse Ulissi
- Cell Transplant Center, Diabetes Research Institute, University of Miami, Miami, FL
| | - Hari Baskar Balasubramanian
- International Center for T1D, Pediatric Clinical Research Center “Romeo ed Enrica Invernizzi,” Department of Biomedical and Clinical Science L. Sacco, University of Milan, Milan, Italy
| | - Maria Elena Lunati
- Division of Endocrinology, Azienda Socio-Sanitaria Territoriale (ASST) Fatebenefratelli-Sacco, Milan, Italy
| | - Vera Usuelli
- International Center for T1D, Pediatric Clinical Research Center “Romeo ed Enrica Invernizzi,” Department of Biomedical and Clinical Science L. Sacco, University of Milan, Milan, Italy
| | - Andy Joe Seelam
- International Center for T1D, Pediatric Clinical Research Center “Romeo ed Enrica Invernizzi,” Department of Biomedical and Clinical Science L. Sacco, University of Milan, Milan, Italy
| | - Salma Ayman Khalefa
- International Center for T1D, Pediatric Clinical Research Center “Romeo ed Enrica Invernizzi,” Department of Biomedical and Clinical Science L. Sacco, University of Milan, Milan, Italy
| | - Christian La Sala
- Cell Transplant Center, Diabetes Research Institute, University of Miami, Miami, FL
| | - Jennifer Gimeno
- Cell Transplant Center, Diabetes Research Institute, University of Miami, Miami, FL
| | - Armando J. Mendez
- Cell Transplant Center, Diabetes Research Institute, University of Miami, Miami, FL
- Division of Cellular Transplantation, DeWitt Daughtry Department of Surgery, Miller School of Medicine, University of Miami, Miami, FL
| | - Camillo Ricordi
- Cell Transplant Center, Diabetes Research Institute, University of Miami, Miami, FL
- Division of Cellular Transplantation, DeWitt Daughtry Department of Surgery, Miller School of Medicine, University of Miami, Miami, FL
- Division of Endocrinology, Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL
- Department of Biomedical Engineering, University of Miami, Miami, FL
| | - Allison L. Bayer
- Cell Transplant Center, Diabetes Research Institute, University of Miami, Miami, FL
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL
| | - Paolo Fiorina
- International Center for T1D, Pediatric Clinical Research Center “Romeo ed Enrica Invernizzi,” Department of Biomedical and Clinical Science L. Sacco, University of Milan, Milan, Italy
- Nephrology Division, Boston Children's Hospital, Harvard Medical School, Boston, MA
- Division of Endocrinology, Azienda Socio-Sanitaria Territoriale (ASST) Fatebenefratelli-Sacco, Milan, Italy
| | - Antonello Pileggi
- Cell Transplant Center, Diabetes Research Institute, University of Miami, Miami, FL
- Division of Cellular Transplantation, DeWitt Daughtry Department of Surgery, Miller School of Medicine, University of Miami, Miami, FL
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL
- Department of Biomedical Engineering, University of Miami, Miami, FL
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19
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Sainz RM, Rodriguez-Quintero JH, Maldifassi MC, Stiles BM, Wennerberg E. Tumour immune escape via P2X7 receptor signalling. Front Immunol 2023; 14:1287310. [PMID: 38022596 PMCID: PMC10643160 DOI: 10.3389/fimmu.2023.1287310] [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: 09/01/2023] [Accepted: 10/12/2023] [Indexed: 12/01/2023] Open
Abstract
While P2X7 receptor expression on tumour cells has been characterized as a promotor of cancer growth and metastasis, its expression by the host immune system is central for orchestration of both innate and adaptive immune responses against cancer. The role of P2X7R in anti-tumour immunity is complex and preclinical studies have described opposing roles of the P2X7R in regulating immune responses against tumours. Therefore, few P2X7R modulators have reached clinical testing in cancer patients. Here, we review the prognostic value of P2X7R in cancer, how P2X7R have been targeted to date in tumour models, and we discuss four aspects of how tumours skew immune responses to promote immune escape via the P2X7R; non-pore functional P2X7Rs, mono-ADP-ribosyltransferases, ectonucleotidases, and immunoregulatory cells. Lastly, we discuss alternative approaches to offset tumour immune escape via P2X7R to enhance immunotherapeutic strategies in cancer patients.
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Affiliation(s)
- Ricardo M. Sainz
- Division of Radiotherapy and Imaging, The Institute of Cancer Research, London, United Kingdom
| | - Jorge Humberto Rodriguez-Quintero
- Department of Cardiovascular and Thoracic Surgery, Albert Einstein College of Medicine, Montefiore Health System, Bronx, NY, United States
| | - Maria Constanza Maldifassi
- Department of Cardiovascular and Thoracic Surgery, Albert Einstein College of Medicine, Montefiore Health System, Bronx, NY, United States
| | - Brendon M. Stiles
- Department of Cardiovascular and Thoracic Surgery, Albert Einstein College of Medicine, Montefiore Health System, Bronx, NY, United States
| | - Erik Wennerberg
- Division of Radiotherapy and Imaging, The Institute of Cancer Research, London, United Kingdom
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20
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Henze E, Ehrlich JJ, Burkhardt RN, Fox BW, Michalski K, Kramer L, Lenfest M, Boesch JM, Schroeder FC, Kawate T. ATP-release pannexin channels are gated by lysophospholipids. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.23.563601. [PMID: 37961151 PMCID: PMC10634739 DOI: 10.1101/2023.10.23.563601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Adenosine triphosphate (ATP) serves as an extracellular messenger that mediates diverse cell-to-cell communication. Compelling evidence supports that ATP is released from cells through pannexins, a family of heptameric large pore-forming channels. However, the activation mechanisms that trigger ATP release by pannexins remain poorly understood. Here, we discover lysophospholipids as endogenous pannexin activators, using activity-guided fractionation of mouse tissue extracts combined with untargeted metabolomics and electrophysiology. We show that lysophospholipids directly and reversibly activate pannexins in the absence of other proteins. Molecular docking, mutagenesis, and single-particle cryo-EM reconstructions suggest that lysophospholipids open pannexin channels by altering the conformation of the N-terminal domain. Our results provide a connection between lipid metabolism and ATP signaling, both of which play major roles in inflammation and neurotransmission. One-Sentence Summary Untargeted metabolomics discovers a class of messenger lipids as endogenous activators of membrane channels important for inflammation and neurotransmission.
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21
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Grassi F, Salina G. The P2X7 Receptor in Autoimmunity. Int J Mol Sci 2023; 24:14116. [PMID: 37762419 PMCID: PMC10531565 DOI: 10.3390/ijms241814116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/06/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
The P2X7 receptor (P2X7R) is an ATP-gated nonselective cationic channel that, upon intense stimulation, can progress to the opening of a pore permeable to molecules up to 900 Da. Apart from its broad expression in cells of the innate and adaptive immune systems, it is expressed in multiple cell types in different tissues. The dual gating property of P2X7R is instrumental in determining cellular responses, which depend on the expression level of the receptor, timing of stimulation, and microenvironmental cues, thus often complicating the interpretation of experimental data in comprehensive settings. Here we review the existing literature on P2X7R activity in autoimmunity, pinpointing the different functions in cells involved in the immunopathological processes that can make it difficult to model as a druggable target.
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Affiliation(s)
- Fabio Grassi
- Institute for Research in Biomedicine, Faculty of Biomedical Sciences, Università della Svizzera Italiana, 6500 Bellinzona, Switzerland;
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22
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Phan TTT, Truong NV, Wu WG, Su YC, Hsu TS, Lin LY. Tumor suppressor p53 mediates interleukin-6 expression to enable cancer cell evasion of genotoxic stress. Cell Death Discov 2023; 9:340. [PMID: 37696858 PMCID: PMC10495329 DOI: 10.1038/s41420-023-01638-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 08/24/2023] [Accepted: 08/30/2023] [Indexed: 09/13/2023] Open
Abstract
The tumor suppressor p53 primarily functions as a mediator of DNA damage-induced cell death, thereby contributing to the efficacy of genotoxic anticancer therapeutics. Here, we show, on the contrary, that cancer cells can employ genotoxic stress-induced p53 to acquire treatment resistance through the production of the pleiotropic cytokine interleukin (IL)-6. Mechanistically, DNA damage, either repairable or irreparable, activates p53 and stimulates Caspase-2-mediated cleavage of its negative regulator mouse double minute 2 (MDM2) creating a positive feedback loop that leads to elevated p53 protein accumulation. p53 transcriptionally controls the major adenosine triphosphate (ATP) release channel pannexin 1 (Panx1), which directs IL-6 induction via a mechanism dependent on the extracellular ATP-activated purinergic P2 receptors as well as their downstream intracellular calcium (iCa2+)/PI3K/Akt/NF-ĸB signaling pathway. Thus, p53 silencing impairs Panx1 and IL-6 expression and renders cancer cells sensitive to genotoxic stress. Moreover, we confirm that IL-6 hampers the effectiveness of genotoxic anticancer agents by mitigating DNA damage, driving the expression of anti-apoptotic Bcl-2 family genes, and maintaining the migratory and invasive properties of cancer cells. Analysis of patient survival and relevant factors in lung cancer and pan-cancer cohorts supports the prognostic and clinical values of Panx1 and IL-6. Notably, IL-6 secreted by cancer cells during genotoxic treatments promotes the polarization of monocytic THP-1-derived macrophages into an alternative (M2-like) phenotype that exhibits impaired anti-survival activities but enhanced pro-metastatic effects on cancer cells as compared to nonpolarized macrophages. Our study reveals the precise mechanism for genotoxic-induced IL-6 and suggests that targeting p53-mediated IL-6 may improve the responsiveness of cancer cells to genotoxic anticancer therapy.
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Affiliation(s)
- Trinh T T Phan
- Institute of Molecular and Cellular Biology, College of Life Sciences and Medicine, National Tsing Hua University, Hsinchu, 300044, Taiwan ROC
| | - Nam V Truong
- Institute of Bioinformatics and Structural Biology, College of Life Sciences and Medicine, National Tsing Hua University, Hsinchu, 300044, Taiwan ROC
| | - Wen-Guey Wu
- Institute of Bioinformatics and Structural Biology, College of Life Sciences and Medicine, National Tsing Hua University, Hsinchu, 300044, Taiwan ROC
| | - Yi-Chun Su
- Institute of Molecular and Cellular Biology, College of Life Sciences and Medicine, National Tsing Hua University, Hsinchu, 300044, Taiwan ROC
| | - Tzu-Sheng Hsu
- Institute of Molecular and Cellular Biology, College of Life Sciences and Medicine, National Tsing Hua University, Hsinchu, 300044, Taiwan ROC.
| | - Lih-Yuan Lin
- Institute of Molecular and Cellular Biology, College of Life Sciences and Medicine, National Tsing Hua University, Hsinchu, 300044, Taiwan ROC.
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23
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Van Campenhout R, Caufriez A, Tabernilla A, Maerten A, De Boever S, Sanz-Serrano J, Kadam P, Vinken M. Pannexin1 channels in the liver: an open enemy. Front Cell Dev Biol 2023; 11:1220405. [PMID: 37492223 PMCID: PMC10363690 DOI: 10.3389/fcell.2023.1220405] [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: 05/10/2023] [Accepted: 06/23/2023] [Indexed: 07/27/2023] Open
Abstract
Pannexin1 proteins form communication channels at the cell plasma membrane surface, which allow the transfer of small molecules and ions between the intracellular compartment and extracellular environment. In this way, pannexin1 channels play an important role in various cellular processes and diseases. Indeed, a plethora of human pathologies is associated with the activation of pannexin1 channels. The present paper reviews and summarizes the structure, life cycle, regulation and (patho)physiological roles of pannexin1 channels, with a particular focus on the relevance of pannexin1 channels in liver diseases.
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24
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Danielli S, Ma Z, Pantazi E, Kumar A, Demarco B, Fischer FA, Paudel U, Weissenrieder J, Lee RJ, Joyce S, Foskett JK, Bezbradica JS. The ion channel CALHM6 controls bacterial infection-induced cellular cross-talk at the immunological synapse. EMBO J 2023; 42:e111450. [PMID: 36861806 PMCID: PMC10068325 DOI: 10.15252/embj.2022111450] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 01/19/2023] [Accepted: 01/26/2023] [Indexed: 03/03/2023] Open
Abstract
Membrane ion channels of the calcium homeostasis modulator (CALHM) family promote cell-cell crosstalk at neuronal synapses via ATP release, where ATP acts as a neurotransmitter. CALHM6, the only CALHM highly expressed in immune cells, has been linked to the induction of natural killer (NK) cell anti-tumour activity. However, its mechanism of action and broader functions in the immune system remain unclear. Here, we generated Calhm6-/- mice and report that CALHM6 is important for the regulation of the early innate control of Listeria monocytogenes infection in vivo. We find that CALHM6 is upregulated in macrophages by pathogen-derived signals and that it relocates from the intracellular compartment to the macrophage-NK cell synapse, facilitating ATP release and controlling the kinetics of NK cell activation. Anti-inflammatory cytokines terminate CALHM6 expression. CALHM6 forms an ion channel when expressed in the plasma membrane of Xenopus oocytes, where channel opening is controlled by a conserved acidic residue, E119. In mammalian cells, CALHM6 is localised to intracellular compartments. Our results contribute to the understanding of neurotransmitter-like signal exchange between immune cells that fine-tunes the timing of innate immune responses.
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Affiliation(s)
- Sara Danielli
- The Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
| | - Zhongming Ma
- Department of Physiology, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
| | - Eirini Pantazi
- The Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
| | - Amrendra Kumar
- Department of Veterans AffairsTennessee Valley Healthcare SystemNashvilleTNUSA
- Department of Pathology, Microbiology, & ImmunologyVanderbilt University Medical CenterNashvilleTNUSA
| | - Benjamin Demarco
- The Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
| | - Fabian A Fischer
- The Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
| | - Usha Paudel
- Department of Physiology, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
| | - Jillian Weissenrieder
- Department of Physiology, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
| | - Robert J Lee
- Department of Physiology, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
- Department of Otorhinolaryngology, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
| | - Sebastian Joyce
- Department of Veterans AffairsTennessee Valley Healthcare SystemNashvilleTNUSA
- Department of Pathology, Microbiology, & ImmunologyVanderbilt University Medical CenterNashvilleTNUSA
| | - J Kevin Foskett
- Department of Physiology, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
- Department of Cell and Developmental Biology, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
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25
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Santiago-Carvalho I, Banuelos A, Borges da Silva H. Tissue- and temporal-specific roles of extracellular ATP on T cell metabolism and function. IMMUNOMETABOLISM (COBHAM (SURREY, ENGLAND)) 2023; 5:e00025. [PMID: 37143525 PMCID: PMC10150631 DOI: 10.1097/in9.0000000000000025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 04/13/2023] [Indexed: 05/06/2023]
Abstract
The activation and function of T cells is fundamental for the control of infectious diseases and cancer, and conversely can mediate several autoimmune diseases. Among the signaling pathways leading to T cell activation and function, the sensing of extracellular adenosine triphosphate (eATP) has been recently appreciated as an important component. Through a plethora of purinergic receptors, most prominently P2RX7, eATP sensing can induce a wide variety of processes in T cells, such as proliferation, subset differentiation, survival, or cell death. The downstream roles of eATP sensing can vary according to (a) the T cell subset, (b) the tissue where T cells are, and (c) the time after antigen exposure. In this mini-review, we revisit the recent findings on how eATP signaling pathways regulate T-cell immune responses and posit important unanswered questions on this field.
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Affiliation(s)
| | - Alma Banuelos
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - Henrique Borges da Silva
- Department of Immunology, Mayo Clinic Arizona, Scottsdale, AZ, USA
- *Correspondence: Henrique Borges da Silva, E-mail:
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26
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de Salles ÉM, Raeder PL, Angeli CB, Santiago VF, de Souza CN, Ramalho T, Câmara NOS, Palmisano G, Álvarez JM, D'Império Lima MR. P2RX7 signaling drives the differentiation of Th1 cells through metabolic reprogramming for aerobic glycolysis. Front Immunol 2023; 14:1140426. [PMID: 36993971 PMCID: PMC10040773 DOI: 10.3389/fimmu.2023.1140426] [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: 01/09/2023] [Accepted: 02/24/2023] [Indexed: 03/16/2023] Open
Abstract
IntroductionThis study provides evidence of how Th1 cell metabolism is modulated by the purinergic receptor P2X7 (P2RX7), a cation cannel activated by high extracellular concentrations of adenosine triphosphate (ATP).MethodsIn vivo analysis was performed in the Plasmodium chabaudi model of malaria in view of the great relevance of this infectious disease for human health, as well as the availability of data concerning Th1/Tfh differentiation.ResultsWe show that P2RX7 induces T-bet expression and aerobic glycolysis in splenic CD4+ T cells that respond to malaria, at a time prior to Th1/Tfh polarization. Cell-intrinsic P2RX7 signaling sustains the glycolytic pathway and causes bioenergetic mitochondrial stress in activated CD4+ T cells. We also show in vitro the phenotypic similarities of Th1-conditioned CD4+ T cells that do not express P2RX7 and those in which the glycolytic pathway is pharmacologically inhibited. In addition, in vitro ATP synthase blockade and the consequent inhibition of oxidative phosphorylation, which drives cellular metabolism for aerobic glycolysis, is sufficient to promote rapid CD4+ T cell proliferation and polarization to the Th1 profile in the absence of P2RX7.ConclusionThese data demonstrate that P2RX7-mediated metabolic reprograming for aerobic glycolysis is a key event for Th1 differentiation and suggest that ATP synthase inhibition is a downstream effect of P2RX7 signaling that potentiates the Th1 response.
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Affiliation(s)
- Érika Machado de Salles
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
- *Correspondence: Érika Machado de Salles, ; Maria Regina D'Império Lima,
| | - Paulo Lisboa Raeder
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Claudia Blanes Angeli
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Verônica Feijoli Santiago
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Cristiane Naffah de Souza
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Theresa Ramalho
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Niels Olsen Saraiva Câmara
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Giuseppe Palmisano
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - José Maria Álvarez
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Maria Regina D'Império Lima
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
- *Correspondence: Érika Machado de Salles, ; Maria Regina D'Império Lima,
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27
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Li M, Liu B, Li R, Yang P, Leng P, Huang Y. Exploration of the link between gut microbiota and purinergic signalling. Purinergic Signal 2023; 19:315-327. [PMID: 36121551 PMCID: PMC9984663 DOI: 10.1007/s11302-022-09891-1] [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: 11/05/2021] [Accepted: 07/25/2022] [Indexed: 11/30/2022] Open
Abstract
Growing evidence reveals that microorganisms in the gut are linked to metabolic health and disease risk in human beings to a considerable extent. The focus of research at this stage must tend to focus on cause-and-effect studies. In addition to being a component of DNA and RNA, purine metabolites can be involved in purine signalling in the body as chemical messengers. Abnormalities in purinergic signalling may lead to neuropathy, rheumatic immune diseases, inflammation, tumors, and a wide range of other diseases. It has proved that gut microbes are involved in purinergic signalling. The relationship between these gut-derived purinergic signalling molecules and host metabolism may be one of the important clues to our understanding of the mechanisms by which the microbiota affects host metabolism.
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Affiliation(s)
- MingJian Li
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - BoWen Liu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Rong Li
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Ping Yang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Ping Leng
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Yong Huang
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
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28
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Silva-Vilches C, Bolduan V, Alabdullah M, Steinbrink K, Probst HC, Enk A, Mahnke K. Topical Application of Adenosine A 2-Type Receptor Agonists Prevents Contact Hypersensitivity Reactions in Mice by Affecting Skin Dendritic Cells. J Invest Dermatol 2023; 143:408-418.e6. [PMID: 36174716 DOI: 10.1016/j.jid.2022.07.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 06/18/2022] [Accepted: 07/19/2022] [Indexed: 10/14/2022]
Abstract
Adenosine (Ado) produced by skin and skin migratory CD73+ dendritic cells is critically involved in tolerance to haptens. We therefore investigated the use of Ado receptor agonists for the treatment of contact hypersensitivity reactions. A2A- 4-[2-[[6-Amino-9-(N-ethyl-β-D-ribofuranuronamidosyl)-9H-purin-2-yl]amino] ethyl]benzenepropanoic acid hydrochloride (CGS) and A2B- 2-[[6-Amino-3,5-dicyano-4-[4-[cyclopropylmethoxy]phenyl]-2-pyridinyl]thio]-acetamide (BAY) specific Ado receptor agonists were epicutaneously applied to the skin before sensitization and challenge with DNFB. Both agonists reduced ear swelling compared with solvent controls. This was accompanied by fewer activated T cells in the skin after the challenge and by higher numbers of T cells expressing anergic markers such as LAG-3, CD137, PD-1, CD272, and TIM-3 in the lymph nodes of CGS-treated groups. In ear tissue, Ado receptor agonist treatment reduced the production of proinflammatory cytokines and chemokines as well as the infiltration by neutrophils after sensitization. Moreover, reduced numbers of skin migratory dendritic cells producing less IL-12 and exhibiting lower expression of CD86 were recorded in lymph nodes after sensitization. In cocultures of skin migratory dendritic cells from CGS-treated mice with T cells, reduced proliferation of T cells and decreased secretion of proinflammatory cytokines compared with that of solvent controls were apparent. In conclusion, topical application of Ado receptor agonists to the skin prevents sensitization of T cells against haptens by reducing the migration and activation of skin migratory dendritic cells.
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Affiliation(s)
- Cinthia Silva-Vilches
- Department of Dermatology, University Hospital Heidelberg, Ruprecht Karls University of Heidelberg, Heidelberg, Germany
| | - Vanessa Bolduan
- Department of Dermatology, University Hospital Heidelberg, Ruprecht Karls University of Heidelberg, Heidelberg, Germany
| | - Mohamad Alabdullah
- Department of Dermatology, University Hospital Heidelberg, Ruprecht Karls University of Heidelberg, Heidelberg, Germany
| | - Kerstin Steinbrink
- Department of Dermatology, University Hospital Münster, Westfälische Wilhelms-University Münster, Münster, Germany
| | | | - Alexander Enk
- Department of Dermatology, University Hospital Heidelberg, Ruprecht Karls University of Heidelberg, Heidelberg, Germany
| | - Karsten Mahnke
- Department of Dermatology, University Hospital Heidelberg, Ruprecht Karls University of Heidelberg, Heidelberg, Germany.
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29
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Loretelli C, Pastore I, Lunati ME, Abdelsalam A, Usuelli V, Assi E, Fiorina E, Loreggian L, Balasubramanian HB, Xie Y, Yang J, El Essawy B, Montefusco L, D'Addio F, Ben Nasr M, Fiorina P. eATP and autoimmune diabetes. Pharmacol Res 2023; 190:106709. [PMID: 36842542 DOI: 10.1016/j.phrs.2023.106709] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/21/2023] [Accepted: 02/23/2023] [Indexed: 02/26/2023]
Abstract
PURPOSE OF REVIEW The purine nucleotide adenosine triphosphate (ATP) is released into extracellular spaces as extracellular ATP (eATP) as a consequence of cell injury or death and activates the purinergic receptors. Once released, eATP may facilitate T-lymphocyte activation and differentiation. The purpose of this review is to elucidate the role of ATP-mediated signaling in the immunological events related to type 1 diabetes (T1D). RECENT FINDINGS T lymphocytes mediate immune response during the onset of T1D and promote pancreatic islet or whole pancreas rejection in transplantation. Recent data suggest a potential role for eATP in early steps of T1D onset and of allograft rejection. In different preclinical experimental models and clinical trials, several drugs targeting purinergic signaling have been employed to abrogate lymphocyte activation and differentiation, thus representing an achievable treatment to prevent/revert T1D or to induce long-term islet allograft function. SUMMARY In preclinical and clinical settings, eATP-signaling inhibition induces immune tolerance in autoimmune disease and in allotransplantation. In this view, the purinergic system may represent a novel therapeutic target for auto- and allo-immunity.
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Affiliation(s)
- Cristian Loretelli
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, Department of Biomedical and Clinical Science, Università di Milano, Milan, Italy
| | - Ida Pastore
- Division of Endocrinology, ASST Fatebenefratelli-Sacco, Milan, Italy
| | | | - Ahmed Abdelsalam
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, Department of Biomedical and Clinical Science, Università di Milano, Milan, Italy
| | - Vera Usuelli
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, Department of Biomedical and Clinical Science, Università di Milano, Milan, Italy
| | - Emma Assi
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, Department of Biomedical and Clinical Science, Università di Milano, Milan, Italy
| | - Emma Fiorina
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, Department of Biomedical and Clinical Science, Università di Milano, Milan, Italy
| | - Lara Loreggian
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, Department of Biomedical and Clinical Science, Università di Milano, Milan, Italy
| | - Hari Baskar Balasubramanian
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, Department of Biomedical and Clinical Science, Università di Milano, Milan, Italy
| | - Yanan Xie
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, Department of Biomedical and Clinical Science, Università di Milano, Milan, Italy; Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China; NHC Key Laboratory of Organ Transplantation, Wuhan, China; Key Laboratory of Organ Transplantation, Ministry of Education, Wuhan, China; Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jun Yang
- Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, China; NHC Key Laboratory of Organ Transplantation, Wuhan, China; Key Laboratory of Organ Transplantation, Ministry of Education, Wuhan, China; Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Basset El Essawy
- Medicine, Al-Azhar University, Cairo, Egypt; Transplantation Research Center, Nephrology Division, Brigham and Women's Hospital, Boston, MA, USA
| | - Laura Montefusco
- Division of Endocrinology, ASST Fatebenefratelli-Sacco, Milan, Italy
| | - Francesca D'Addio
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, Department of Biomedical and Clinical Science, Università di Milano, Milan, Italy; Division of Endocrinology, ASST Fatebenefratelli-Sacco, Milan, Italy
| | - Moufida Ben Nasr
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, Department of Biomedical and Clinical Science, Università di Milano, Milan, Italy; Nephrology Division, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Paolo Fiorina
- International Center for T1D, Pediatric Clinical Research Center Romeo ed Enrica Invernizzi, Department of Biomedical and Clinical Science, Università di Milano, Milan, Italy; Division of Endocrinology, ASST Fatebenefratelli-Sacco, Milan, Italy; Nephrology Division, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
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30
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Feng J, Xie Z, Hu H. Ion channel regulation of gut immunity. J Gen Physiol 2022; 155:213734. [PMID: 36459135 PMCID: PMC9723512 DOI: 10.1085/jgp.202113042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 08/15/2022] [Accepted: 11/17/2022] [Indexed: 12/03/2022] Open
Abstract
Mounting evidence indicates that gastrointestinal (GI) homeostasis hinges on communications among many cellular networks including the intestinal epithelium, the immune system, and both intrinsic and extrinsic nerves innervating the gut. The GI tract, especially the colon, is the home base for gut microbiome which dynamically regulates immune function. The gut's immune system also provides an effective defense against harmful pathogens entering the GI tract while maintaining immune homeostasis to avoid exaggerated immune reaction to innocuous food and commensal antigens which are important causes of inflammatory disorders such as coeliac disease and inflammatory bowel diseases (IBD). Various ion channels have been detected in multiple cell types throughout the GI tract. By regulating membrane properties and intracellular biochemical signaling, ion channels play a critical role in synchronized signaling among diverse cellular components in the gut that orchestrates the GI immune response. This work focuses on the role of ion channels in immune cells, non-immune resident cells, and neuroimmune interactions in the gut at the steady state and pathological conditions. Understanding the cellular and molecular basis of ion channel signaling in these immune-related pathways and initial testing of pharmacological intervention will facilitate the development of ion channel-based therapeutic approaches for the treatment of intestinal inflammation.
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Affiliation(s)
- Jing Feng
- Department of Anesthesiology, The Center for the Study of Itch and Sensory Disorders, Washington University School of Medicine, St. Louis, MO,Center for Neurological and Psychiatric Research and Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai, China,Correspondence to Jing Feng:
| | - Zili Xie
- Department of Anesthesiology, The Center for the Study of Itch and Sensory Disorders, Washington University School of Medicine, St. Louis, MO
| | - Hongzhen Hu
- Department of Anesthesiology, The Center for the Study of Itch and Sensory Disorders, Washington University School of Medicine, St. Louis, MO,Hongzhen Hu:
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31
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Secreted immune metabolites that mediate immune cell communication and function. Trends Immunol 2022; 43:990-1005. [PMID: 36347788 DOI: 10.1016/j.it.2022.10.006] [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: 09/28/2022] [Revised: 10/10/2022] [Accepted: 10/10/2022] [Indexed: 11/08/2022]
Abstract
Metabolites are emerging as essential factors for the immune system that are involved in both metabolic circuits and signaling cascades. Accumulated evidence suggests that altered metabolic programs initiated by the activation and maturation of immune cell types are accompanied by the delivery of various metabolites into the local environment. We propose that, in addition to protein/peptide ligands, secreted immune metabolites (SIMets) are essential components of immune communication networks that fine-tune immune responses under homeostatic and pathological conditions. We summarize recent advances in our understanding of SIMets and discuss the potential mechanisms by which some metabolites engage in immunological responses through receptor-, transporter-, and post-translational-mediated regulation. These insights may contribute to understanding physiology and developing effective therapeutics for inflammatory and immune-mediated diseases.
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32
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Doan Ngoc TM, Tilly G, Danger R, Bonizec O, Masset C, Guérif P, Bruneau S, Glemain A, Harb J, Cadoux M, Vivet A, Mai HL, Garcia A, Laplaud D, Liblau R, Giral M, Blandin S, Feyeux M, Dubreuil L, Pecqueur C, Cyr M, Ni W, Brouard S, Degauque N. Effector Memory-Expressing CD45RA (TEMRA) CD8 + T Cells from Kidney Transplant Recipients Exhibit Enhanced Purinergic P2X4 Receptor-Dependent Proinflammatory and Migratory Responses. J Am Soc Nephrol 2022; 33:2211-2231. [PMID: 36280286 PMCID: PMC9731633 DOI: 10.1681/asn.2022030286] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 08/22/2022] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND The mechanisms regulating CD8+ T cell migration to nonlymphoid tissue during inflammation have not been fully elucidated, and the migratory properties of effector memory CD8+ T cells that re-express CD45RA (TEMRA CD8+ T cells) remain unclear, despite their roles in autoimmune diseases and allotransplant rejection. METHODS We used single-cell proteomic profiling and functional testing of CD8+ T cell subsets to characterize their effector functions and migratory properties in healthy volunteers and kidney transplant recipients with stable or humoral rejection. RESULTS We showed that humoral rejection of a kidney allograft is associated with an accumulation of cytolytic TEMRA CD8+ T cells in blood and kidney graft biopsies. TEMRA CD8+ T cells from kidney transplant recipients exhibited enhanced migratory properties compared with effector memory (EM) CD8+ T cells, with enhanced adhesion to activated endothelium and transmigration in response to the chemokine CXCL12. CXCL12 directly triggers a purinergic P2×4 receptor-dependent proinflammatory response of TEMRA CD8+ T cells from transplant recipients. The stimulation with IL-15 promotes the CXCL12-induced migration of TEMRA and EM CD8+ T cells and promotes the generation of functional PSGL1, which interacts with the cell adhesion molecule P-selectin and adhesion of these cells to activated endothelium. Although disruption of the interaction between functional PSGL1 and P-selectin prevents the adhesion and transmigration of both TEMRA and EM CD8+ T cells, targeting VLA-4 or LFA-1 (integrins involved in T cell migration) specifically inhibited the migration of TEMRA CD8+ T cells from kidney transplant recipients. CONCLUSIONS Our findings highlight the active role of TEMRA CD8+ T cells in humoral transplant rejection and suggest that kidney transplant recipients may benefit from therapeutics targeting these cells.
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Affiliation(s)
- Tra-My Doan Ngoc
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
| | - Gaëlle Tilly
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
| | - Richard Danger
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
- CHU Nantes, Nantes Université, Institut de Transplantation Urologie Néphrologie, Nantes, France
| | - Orianne Bonizec
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
| | - Christophe Masset
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
- CHU Nantes, Nantes Université, Institut de Transplantation Urologie Néphrologie, Nantes, France
| | - Pierrick Guérif
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
- CHU Nantes, Nantes Université, Institut de Transplantation Urologie Néphrologie, Nantes, France
| | - Sarah Bruneau
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
| | - Alexandre Glemain
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
| | - Jean Harb
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
- CHU Nantes, Nantes Université, Institut de Transplantation Urologie Néphrologie, Nantes, France
| | - Marion Cadoux
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
| | - Anaïs Vivet
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
| | - Hoa Le Mai
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
- CHU Nantes, Nantes Université, Institut de Transplantation Urologie Néphrologie, Nantes, France
| | - Alexandra Garcia
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
| | - David Laplaud
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
| | - Roland Liblau
- CNRS, Institut National de la Santé et de la Recherche Médicale, UPS, Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, Toulouse, France
- Department of Immunology, Toulouse University Hospital, Toulouse, France
| | - Magali Giral
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
- CHU Nantes, Nantes Université, Institut de Transplantation Urologie Néphrologie, Nantes, France
| | - Stéphanie Blandin
- CHU Nantes, CNRS, Institut National de la Santé et de la Recherche Médicale, BioCore, US16, SFR Bonamy, Nantes Université, Nantes, France
| | - Magalie Feyeux
- CHU Nantes, CNRS, Institut National de la Santé et de la Recherche Médicale, BioCore, US16, SFR Bonamy, Nantes Université, Nantes, France
| | | | - Claire Pecqueur
- Université d’Angers, Institut National de la Santé et de la Recherche Médicale, CNRS, CRCI2NA, Nantes Université, Nantes, France
| | - Matthew Cyr
- IsoPlexis Corporation, Branford, Connecticut
| | - Weiming Ni
- IsoPlexis Corporation, Branford, Connecticut
| | - Sophie Brouard
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
- CHU Nantes, Nantes Université, Institut de Transplantation Urologie Néphrologie, Nantes, France
| | - Nicolas Degauque
- Institut National de la Santé et de la Recherche Médicale, Nantes Université, CHU Nantes, Center for Research in Transplantation and Translational Immunology, UMR 1064, Nantes, France
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Cancer Stem Cell Formation Induced and Regulated by Extracellular ATP and Stanniocalcin-1 in Human Lung Cancer Cells and Tumors. Int J Mol Sci 2022; 23:ijms232314770. [PMID: 36499099 PMCID: PMC9740946 DOI: 10.3390/ijms232314770] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/13/2022] [Accepted: 11/15/2022] [Indexed: 11/29/2022] Open
Abstract
Cancer stem cells (CSCs) are closely associated with metastasis and epithelial mesenchymal transition (EMT). We previously reported that extracellular ATP (eATP) induces and regulates EMT in cancer cells. We recently found that the gene stanniocalcin 1 (STC1) is significantly upregulated by eATP in human non-small lung cancer (NSCLC) A549 cells; however, the relationships among eATP, CSCs, and STC1 were largely unknown. In this study, we performed gene knockdown and knockout, and a wide variety of functional assays to determine if and how eATP and STC1 induce CSCs in NSCLC A549 and H1299 cells. Our data show that, in both cultured cells and tumors, eATP increased the number of CSCs in the cancer cell population and upregulated CSC-related genes and protein markers. STC1 deletion led to drastically slower cell and tumor growth, reduced intracellular ATP levels and CSC markers, and metabolically shifted STC1-deficient cells from an energetic state to a quiescent state. These findings indicate that eATP induces and regulates CSCs at transcriptional, translational, and metabolic levels, and these activities are mediated through STC1 via mitochondria-associated ATP synthesis. These novel findings offer insights into eATP-induced CSCs and identify new targets for inhibiting CSCs.
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Rusiecka OM, Tournier M, Molica F, Kwak BR. Pannexin1 channels-a potential therapeutic target in inflammation. Front Cell Dev Biol 2022; 10:1020826. [PMID: 36438559 PMCID: PMC9682086 DOI: 10.3389/fcell.2022.1020826] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 10/20/2022] [Indexed: 08/11/2023] Open
Abstract
An exaggerated inflammatory response is the hallmark of a plethora of disorders. ATP is a central signaling molecule that orchestrates the initiation and resolution of the inflammatory response by enhancing activation of the inflammasome, leukocyte recruitment and activation of T cells. ATP can be released from cells through pannexin (Panx) channels, a family of glycoproteins consisting of three members, Panx1, Panx2, and Panx3. Panx1 is ubiquitously expressed and forms heptameric channels in the plasma membrane mediating paracrine and autocrine signaling. Besides their involvement in the inflammatory response, Panx1 channels have been shown to contribute to different modes of cell death (i.e., pyroptosis, necrosis and apoptosis). Both genetic ablation and pharmacological inhibition of Panx1 channels decrease inflammation in vivo and contribute to a better outcome in several animal models of inflammatory disease involving various organs, including the brain, lung, kidney and heart. Up to date, several molecules have been identified to inhibit Panx1 channels, for instance probenecid (Pbn), mefloquine (Mfq), flufenamic acid (FFA), carbenoxolone (Cbx) or mimetic peptides like 10Panx1. Unfortunately, the vast majority of these compounds lack specificity and/or serum stability, which limits their application. The recent availability of detailed structural information on the Panx1 channel from cryo-electron microscopy studies may open up innovative approaches to acquire new classes of synthetic Panx1 channel blockers with high target specificity. Selective inhibition of Panx1 channels may not only limit acute inflammatory responses but may also prove useful in chronic inflammatory diseases, thereby improving human health. Here, we reviewed the current knowledge on the role of Panx1 in the initiation and resolution of the inflammatory response, we summarized the effects of Panx1 inhibition in inflammatory pathologies and recapitulate current Panx1 channel pharmacology with an outlook towards future approaches.
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Affiliation(s)
- Olga M. Rusiecka
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Geneva Centre for Inflammation Research, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Malaury Tournier
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Geneva Centre for Inflammation Research, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Filippo Molica
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Geneva Centre for Inflammation Research, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Brenda R. Kwak
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Geneva Centre for Inflammation Research, Faculty of Medicine, University of Geneva, Geneva, Switzerland
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35
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Noble A, Pring ET, Durant L, Man R, Dilke SM, Hoyles L, James SA, Carding SR, Jenkins JT, Knight SC. Altered immunity to microbiota, B cell activation and depleted γδ/resident memory T cells in colorectal cancer. Cancer Immunol Immunother 2022. [PMID: 35316367 DOI: 10.1007/s00262-021-03135-8/figures/5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The role of microbiota:immune system dysregulation in the etiology of colorectal cancer (CRC) is poorly understood. CRC develops in gut epithelium, accompanied by low level inflammatory signaling, intestinal microbial dysbiosis and immune dysfunction. We examined populations of intraepithelial lymphocytes in non-affected colonic mucosa of CRC and healthy donors and circulating immune memory to commensal bacterial species and yeasts. γδ T cells and resident memory T cells, populations with a regulatory CD39-expressing phenotype, were found at lower frequencies in the colonic tissue of CRC donors compared to healthy controls. Patterns of T cell proliferative responses to a panel of commensal bacteria were distinct in CRC, while B cell memory responses to several bacteria/yeast were significantly increased, accompanied by increased proportions of effector memory B cells, transitional B cells and plasmablasts in blood. IgA responses to mucosal microbes were unchanged. Our data describe a novel immune signature with similarities to and differences from that of inflammatory bowel disease. They implicate B cell dysregulation as a potential contributor to parainflammation and identify pathways of weakened barrier function and tumor surveillance in CRC-susceptible individuals.
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Affiliation(s)
- Alistair Noble
- Gut Microbes and Health Program, Quadram Institute Bioscience, Norwich, UK
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark's Campus, Harrow, UK
| | - Edward T Pring
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark's Campus, Harrow, UK
- St. Mark's Hospital, London North West University Healthcare NHS Trust, Harrow, UK
| | - Lydia Durant
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark's Campus, Harrow, UK
| | - Ripple Man
- St. Mark's Hospital, London North West University Healthcare NHS Trust, Harrow, UK
| | - Stella M Dilke
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark's Campus, Harrow, UK
- St. Mark's Hospital, London North West University Healthcare NHS Trust, Harrow, UK
| | - Lesley Hoyles
- Department of Biosciences, Nottingham Trent University, Nottingham, UK
| | - Steve A James
- Gut Microbes and Health Program, Quadram Institute Bioscience, Norwich, UK
| | - Simon R Carding
- Gut Microbes and Health Program, Quadram Institute Bioscience, Norwich, UK
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - John T Jenkins
- St. Mark's Hospital, London North West University Healthcare NHS Trust, Harrow, UK
| | - Stella C Knight
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark's Campus, Harrow, UK.
- St. Mark's Hospital, London North West University Healthcare NHS Trust, Harrow, UK.
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36
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Noble A, Pring ET, Durant L, Man R, Dilke SM, Hoyles L, James SA, Carding SR, Jenkins JT, Knight SC. Altered immunity to microbiota, B cell activation and depleted γδ/resident memory T cells in colorectal cancer. Cancer Immunol Immunother 2022; 71:2619-2629. [PMID: 35316367 PMCID: PMC9519644 DOI: 10.1007/s00262-021-03135-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 12/20/2021] [Indexed: 12/13/2022]
Abstract
The role of microbiota:immune system dysregulation in the etiology of colorectal cancer (CRC) is poorly understood. CRC develops in gut epithelium, accompanied by low level inflammatory signaling, intestinal microbial dysbiosis and immune dysfunction. We examined populations of intraepithelial lymphocytes in non-affected colonic mucosa of CRC and healthy donors and circulating immune memory to commensal bacterial species and yeasts. γδ T cells and resident memory T cells, populations with a regulatory CD39-expressing phenotype, were found at lower frequencies in the colonic tissue of CRC donors compared to healthy controls. Patterns of T cell proliferative responses to a panel of commensal bacteria were distinct in CRC, while B cell memory responses to several bacteria/yeast were significantly increased, accompanied by increased proportions of effector memory B cells, transitional B cells and plasmablasts in blood. IgA responses to mucosal microbes were unchanged. Our data describe a novel immune signature with similarities to and differences from that of inflammatory bowel disease. They implicate B cell dysregulation as a potential contributor to parainflammation and identify pathways of weakened barrier function and tumor surveillance in CRC-susceptible individuals.
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Affiliation(s)
- Alistair Noble
- Gut Microbes and Health Program, Quadram Institute Bioscience, Norwich, UK
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark’s Campus, Harrow, UK
| | - Edward T. Pring
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark’s Campus, Harrow, UK
- St. Mark’s Hospital, London North West University Healthcare NHS Trust, Harrow, UK
| | - Lydia Durant
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark’s Campus, Harrow, UK
| | - Ripple Man
- St. Mark’s Hospital, London North West University Healthcare NHS Trust, Harrow, UK
| | - Stella M. Dilke
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark’s Campus, Harrow, UK
- St. Mark’s Hospital, London North West University Healthcare NHS Trust, Harrow, UK
| | - Lesley Hoyles
- Department of Biosciences, Nottingham Trent University, Nottingham, UK
| | - Steve A. James
- Gut Microbes and Health Program, Quadram Institute Bioscience, Norwich, UK
| | - Simon R. Carding
- Gut Microbes and Health Program, Quadram Institute Bioscience, Norwich, UK
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - John T. Jenkins
- St. Mark’s Hospital, London North West University Healthcare NHS Trust, Harrow, UK
| | - Stella C. Knight
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark’s Campus, Harrow, UK
- St. Mark’s Hospital, London North West University Healthcare NHS Trust, Harrow, UK
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Alberto AVP, Ferreira NCDS, Bonavita AGC, Nihei OK, de Farias FP, Bisaggio RDC, de Albuquerque C, Savino W, Coutinho‐Silva R, Persechini PM, Alves LA. Physiologic roles of P2 receptors in leukocytes. J Leukoc Biol 2022; 112:983-1012. [PMID: 35837975 PMCID: PMC9796137 DOI: 10.1002/jlb.2ru0421-226rr] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/13/2022] [Indexed: 01/01/2023] Open
Abstract
Since their discovery in the 1970s, purinergic receptors have been shown to play key roles in a wide variety of biologic systems and cell types. In the immune system, purinergic receptors participate in innate immunity and in the modulation of the adaptive immune response. In particular, P2 receptors, which respond to extracellular nucleotides, are widely expressed on leukocytes, causing the release of cytokines and chemokines and the formation of inflammatory mediators, and inducing phagocytosis, degranulation, and cell death. The activity of these receptors is regulated by ectonucleotidases-expressed in these same cell types-which regulate the availability of nucleotides in the extracellular environment. In this article, we review the characteristics of the main purinergic receptor subtypes present in the immune system, focusing on the P2 family. In addition, we describe the physiologic roles of the P2 receptors already identified in leukocytes and how they can positively or negatively modulate the development of infectious diseases, inflammation, and pain.
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Affiliation(s)
- Anael Viana Pinto Alberto
- Laboratory of Cellular Communication, Oswaldo Cruz InstituteOswaldo Cruz FoundationRio de JaneiroRJBrazil
| | | | | | - Oscar Kenji Nihei
- Center of Education and LetterState University of the West of ParanáFoz do IguaçuPRBrazil
| | | | - Rodrigo da Cunha Bisaggio
- Laboratory of Cellular Communication, Oswaldo Cruz InstituteOswaldo Cruz FoundationRio de JaneiroRJBrazil,Federal Institute of Education, Science, and Technology of Rio de JaneiroRio de JaneiroRJBrazil
| | | | - Wilson Savino
- Laboratory on Thymus Research, Oswaldo Cruz InstituteOswaldo Cruz FoundationRio de JaneiroRJBrazil,Brazilian National Institute of Science and Technology on NeuroimmunomodulationRio de Janeiro Research Network on NeuroinflammationRio de JaneiroRJBrazil
| | - Robson Coutinho‐Silva
- Laboratory of Immunophysiology, Carlos Chagas Filho Biophysics InstituteFederal University of Rio de JaneiroRio de JaneiroRJBrazil
| | - Pedro Muanis Persechini
- Laboratory of Immunobiophysics, Carlos Chagas Filho Biophysics InstituteFederal University of Rio de JaneiroRio de JaneiroRJBrazil
| | - Luiz Anastacio Alves
- Laboratory of Cellular Communication, Oswaldo Cruz InstituteOswaldo Cruz FoundationRio de JaneiroRJBrazil
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Hernandez CA, Eliseo E. The Role of Pannexin-1 Channels in HIV and NeuroHIV Pathogenesis. Cells 2022; 11:2245. [PMID: 35883688 PMCID: PMC9323506 DOI: 10.3390/cells11142245] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 07/08/2022] [Accepted: 07/14/2022] [Indexed: 02/06/2023] Open
Abstract
The human immunodeficiency virus-1 (HIV) enters the brain shortly after infection, leading to long-term neurological complications in half of the HIV-infected population, even in the current anti-retroviral therapy (ART) era. Despite decades of research, no biomarkers can objectively measure and, more importantly, predict the onset of HIV-associated neurocognitive disorders. Several biomarkers have been proposed; however, most of them only reflect late events of neuronal damage. Our laboratory recently identified that ATP and PGE2, inflammatory molecules released through Pannexin-1 channels, are elevated in the serum of HIV-infected individuals compared to uninfected individuals and other inflammatory diseases. More importantly, high circulating ATP levels, but not PGE2, can predict a decline in cognition, suggesting that HIV-infected individuals have impaired ATP metabolism and associated signaling. We identified that Pannexin-1 channel opening contributes to the high serological ATP levels, and ATP in the circulation could be used as a biomarker of HIV-associated cognitive impairment. In addition, we believe that ATP is a major contributor to chronic inflammation in the HIV-infected population, even in the anti-retroviral era. Here, we discuss the mechanisms associated with Pannexin-1 channel opening within the circulation, as well as within the resident viral reservoirs, ATP dysregulation, and cognitive disease observed in the HIV-infected population.
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Affiliation(s)
| | - Eugenin Eliseo
- Department of Neuroscience, Cell Biology, and Anatomy, University of Texas Medical Branch (UTMB), Galveston, TX 77555, USA;
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P2 Receptors: Novel Disease Markers and Metabolic Checkpoints in Immune Cells. Biomolecules 2022; 12:biom12070983. [PMID: 35883539 PMCID: PMC9313346 DOI: 10.3390/biom12070983] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/24/2022] [Accepted: 07/11/2022] [Indexed: 02/05/2023] Open
Abstract
Extracellular ATP (eATP) and P2 receptors are novel emerging regulators of T-lymphocyte responses. Cellular ATP is released via multiple pathways and accumulates at sites of tissue damage and inflammation. P2 receptor expression and function are affected by numerous single nucleotide polymorphisms (SNPs) associated with diverse disease conditions. Stimulation by released nucleotides (purinergic signalling) modulates several T-lymphocyte functions, among which energy metabolism. Energy metabolism, whether oxidative or glycolytic, in turn deeply affects T-cell activation, differentiation and effector responses. Specific P2R subtypes, among which the P2X7 receptor (P2X7R), are either up- or down-regulated during T-cell activation and differentiation; thus, they can be considered indexes of activation/quiescence, reporters of T-cell metabolic status and, in principle, markers of immune-mediated disease conditions.
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40
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Noble A, Durant L, Dilke SM, Man R, Martin I, Patel R, Hoyles L, Pring ET, Latchford A, Clark SK, Carding SR, Knight SC. Altered Mucosal Immune-Microbiota Interactions in Familial Adenomatous Polyposis. Clin Transl Gastroenterol 2022; 13:e00428. [PMID: 35297393 PMCID: PMC10476795 DOI: 10.14309/ctg.0000000000000428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 09/23/2021] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Familial adenomatous polyposis (FAP) is a condition caused by a constitutional pathogenic variant of the adenomatous polyposis coli gene that results in intestinal adenoma formation and colorectal cancer, necessitating pre-emptive colectomy. We sought to examine interaction between the mucosal immune system and commensal bacteria in FAP to test for immune dysfunction that might accelerate tumorigenesis. METHODS Colonic biopsies were obtained from macroscopically normal mucosal tissue from 14 healthy donors and 13 patients with FAP during endoscopy or from surgical specimens. Intraepithelial and lamina propria lymphocytes were phenotyped. Intraepithelial microbes were labeled with anti-IgA/IgG and analyzed by flow cytometry. RESULTS Proportions of resident memory CD103-expressing CD8 + and γδ T-cell receptor + intraepithelial lymphocytes were dramatically reduced in both the left and right colon of patients with FAP compared with healthy controls. In lamina propria, T cells expressed less CD103, and CD4 + CD103 + cells expressed less CD73 ectonucleotidase. IgA coating of epithelia-associated bacteria, IgA + peripheral B cells, and CD4 T-cell memory responses to commensal bacteria were increased in FAP. DISCUSSION Loss of resident memory T cells and γδ T cells in mucosal tissue of patients with FAP accompanies intestinal microbial dysbiosis previously reported in this precancerous state and suggests impaired cellular immunity and tumor surveillance. This may lead to barrier dysfunction, possible loss of regulatory T-cell function, and excess IgA antibody secretion. Our data are the first to implicate mucosal immune dysfunction as a contributing factor in this genetically driven disease and identify potentially critical pathways in the etiology of CRC.
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Affiliation(s)
- Alistair Noble
- Gut Microbes and Health Program, Quadram Institute Bioscience, Norwich, United Kingdom;
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark's Campus, Harrow, United Kingdom;
| | - Lydia Durant
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark's Campus, Harrow, United Kingdom;
| | - Stella M. Dilke
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark's Campus, Harrow, United Kingdom;
| | - Ripple Man
- The Polyposis Registry, St. Mark's Hospital, London North West University Healthcare NHS Trust, Harrow, United Kingdom;
| | - Isabel Martin
- The Polyposis Registry, St. Mark's Hospital, London North West University Healthcare NHS Trust, Harrow, United Kingdom;
| | - Roshani Patel
- The Polyposis Registry, St. Mark's Hospital, London North West University Healthcare NHS Trust, Harrow, United Kingdom;
| | - Lesley Hoyles
- Department of Biosciences, Nottingham Trent University, Nottingham, United Kingdom;
| | - Edward T. Pring
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark's Campus, Harrow, United Kingdom;
| | - Andrew Latchford
- The Polyposis Registry, St. Mark's Hospital, London North West University Healthcare NHS Trust, Harrow, United Kingdom;
- Department of Surgery and Cancer, Imperial College London, United Kingdom;
| | - Susan K. Clark
- The Polyposis Registry, St. Mark's Hospital, London North West University Healthcare NHS Trust, Harrow, United Kingdom;
- Department of Surgery and Cancer, Imperial College London, United Kingdom;
| | - Simon R. Carding
- Gut Microbes and Health Program, Quadram Institute Bioscience, Norwich, United Kingdom;
- Norwich Medical School, University of East Anglia, Norwich, United Kingdom.
| | - Stella C. Knight
- Gut Microbes and Health Program, Quadram Institute Bioscience, Norwich, United Kingdom;
- Antigen Presentation Research Group, Imperial College London, Northwick Park and St. Mark's Campus, Harrow, United Kingdom;
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41
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Kim CH, Song KS. STAT3 inhibition decreases ATP-induced MUC8 gene expression in human airway epithelial cells. KOSIN MEDICAL JOURNAL 2022. [DOI: 10.7180/kmj.22.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Background: Contact between the human pulmonary system and bacteria, viruses, or other pathogens can induce airway diseases. Although pathogen-induced mucus oversecretion and hyperproduction are frequently observed in the human respiratory tract, the molecular mechanisms of pathogen-induced mucus hypersecretion and overproduction remain unclear. The objective of this study was to investigate the physiological signaling mechanism of ATP-induced MUC8 gene expression in human airway epithelial cells. Methods: Real-time reverse transcription polymerase chain reaction, a cytokine array, and a Ca2+ concentration assay were performed to investigate the ATP/P2Y2-induced MUC8 gene expression levels in human airway epithelial cells. Results: The ATP/P2Y2 complex robustly secreted interleukin (IL)-6 in a time-dependent manner, whereas siRNA-P2Y2 did not. Moreover, ATP/P2Y2 induced MUC8 gene expression. IL-6 secreted by ATP strongly elevated ATP/P2Y2-induced MUC8 gene expression compared to ATP/P2Y2. Interestingly, a specific STAT3 inhibitor, 5,15-DPP, dramatically inhibited ATP/P2Y2/IL-6-induced STAT3 phosphorylation and resulted in an approximately 5-fold decrease in MUC8 gene expression. Conclusions: We showed that IL-6-activated STAT6 is essential for ATP/P2Y2-induced MUC8 gene expression as part of inflammatory signaling by cytokines during airway inflammation. Our results provide a new molecular understanding of the signaling mechanism of MUC8 gene expression during airway inflammation.
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Ito MA, Kojima E, Yanagihara Y, Yoshida K, Matsuoka I. Differential Effects of Gq Protein-Coupled Uridine Receptor Stimulation on IL-8 Production in 1321N1 Human Astrocytoma Cells. Biol Pharm Bull 2022; 45:691-697. [PMID: 35650097 DOI: 10.1248/bpb.b21-01020] [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: 11/22/2022]
Abstract
G-protein-coupled receptors (GPCRs) trigger various physiological functions. GPCR-mediated effects largely depend on the receptor-associated G-protein subtypes. However, compelling evidence suggests that single receptor proteins activate multiple G-protein subtypes to induce diverse physiological responses. This study compared responses mediated by three different Gq-binding uridine nucleotide receptors, P2Y2, P2Y4, and P2Y6, by measuring Ca2+ signaling and interleukin (IL)-8 production. In 1321N1 human astrocytoma cells stably expressing these receptors, agonist stimulation evoked concentration-dependent intracellular Ca2+ elevation to a similar extent. In contrast, agonist-induced IL-8 production was prominent in P2Y6-expressing cells, but not in P2Y2- and P2Y4-expressing cells. In addition to inhibition of Gq signaling, G12 signal blockade attenuated uridine 5'-diphosphate (UDP)-induced IL-8 production, suggesting the involvement of a small G-protein pathway. The Rac inhibitor EHop-16 prevented UDP-induced IL-8 release. The P2Y6-triggered IL-8 production was also inhibited by extracellular signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK), and protein kinase B (Akt) inhibitors. These results suggest that P2Y6 receptor-induced IL-8 production requires Gq-mediated Ca2+ signaling as well as G12-mediated activation of Rac. The results also suggest the importance of considering the involvement of multiple G proteins in understanding GPCR-mediated functions.
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Affiliation(s)
- Masa-Aki Ito
- Laboratory of Pharmacology, Faculty of Pharmacy, Takasaki University of Health and Welfare
| | - Erika Kojima
- Laboratory of Pharmacology, Faculty of Pharmacy, Takasaki University of Health and Welfare
| | - Yu Yanagihara
- Laboratory of Pharmacology, Faculty of Pharmacy, Takasaki University of Health and Welfare
| | - Kazuki Yoshida
- Laboratory of Pharmacology, Faculty of Pharmacy, Takasaki University of Health and Welfare
| | - Isao Matsuoka
- Laboratory of Pharmacology, Faculty of Pharmacy, Takasaki University of Health and Welfare
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Rao R, Shah S, Bhattacharya D, Toukam DK, Cáceres R, Pomeranz Krummel DA, Sengupta S. Ligand-Gated Ion Channels as Targets for Treatment and Management of Cancers. Front Physiol 2022; 13:839437. [PMID: 35350689 PMCID: PMC8957973 DOI: 10.3389/fphys.2022.839437] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 02/07/2022] [Indexed: 12/24/2022] Open
Abstract
Ligand-gated ion channels are an ionotropic receptor subtype characterized by the binding of an extracellular ligand, followed by the transient passage of ions through a transmembrane pore. Ligand-gated ion channels are commonly subcategorized into three superfamilies: purinoreceptors, glutamate receptors, and Cys-loop receptors. This classification is based on the differing topographical morphology of the receptors, which in turn confers functional differences. Ligand-gated ion channels have a diverse spatial and temporal expression which implicate them in key cellular processes. Given that the transcellular electrochemical gradient is finely tuned in eukaryotic cells, any disruption in this homeostasis can contribute to aberrancies, including altering the activity of pro-tumorigenic molecular pathways, such as the MAPK/ERK, RAS, and mTOR pathways. Ligand-gated ion channels therefore serve as a potential targetable system for cancer therapeutics. In this review, we analyze the role that each of the three ligand-gated ion channel superfamilies has concerning tumor proliferation and as a target for the treatment of cancer symptomatology.
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Affiliation(s)
| | | | | | | | | | - Daniel A. Pomeranz Krummel
- Department of Neurology and Rehabilitation Medicine, University of Cincinnati, Cincinnati, OH, United States
| | - Soma Sengupta
- Department of Neurology and Rehabilitation Medicine, University of Cincinnati, Cincinnati, OH, United States
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Harcha PA, López-López T, Palacios AG, Sáez PJ. Pannexin Channel Regulation of Cell Migration: Focus on Immune Cells. Front Immunol 2022; 12:750480. [PMID: 34975840 PMCID: PMC8716617 DOI: 10.3389/fimmu.2021.750480] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 11/15/2021] [Indexed: 12/12/2022] Open
Abstract
The role of Pannexin (PANX) channels during collective and single cell migration is increasingly recognized. Amongst many functions that are relevant to cell migration, here we focus on the role of PANX-mediated adenine nucleotide release and associated autocrine and paracrine signaling. We also summarize the contribution of PANXs with the cytoskeleton, which is also key regulator of cell migration. PANXs, as mechanosensitive ATP releasing channels, provide a unique link between cell migration and purinergic communication. The functional association with several purinergic receptors, together with a plethora of signals that modulate their opening, allows PANX channels to integrate physical and chemical cues during inflammation. Ubiquitously expressed in almost all immune cells, PANX1 opening has been reported in different immunological contexts. Immune activation is the epitome coordination between cell communication and migration, as leukocytes (i.e., T cells, dendritic cells) exchange information while migrating towards the injury site. In the current review, we summarized the contribution of PANX channels during immune cell migration and recruitment; although we also compile the available evidence for non-immune cells (including fibroblasts, keratinocytes, astrocytes, and cancer cells). Finally, we discuss the current evidence of PANX1 and PANX3 channels as a both positive and/or negative regulator in different inflammatory conditions, proposing a general mechanism of these channels contribution during cell migration.
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Affiliation(s)
- Paloma A Harcha
- Centro Interdisciplinario de Neurociencia de Valparaíso, Instituto de Neurociencia, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Tamara López-López
- Cell Communication and Migration Laboratory, Institute of Biochemistry and Molecular Cell Biology, Center for Experimental Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Adrián G Palacios
- Centro Interdisciplinario de Neurociencia de Valparaíso, Instituto de Neurociencia, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Pablo J Sáez
- Cell Communication and Migration Laboratory, Institute of Biochemistry and Molecular Cell Biology, Center for Experimental Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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45
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Kobayashi D, Sugiura Y, Umemoto E, Takeda A, Ueta H, Hayasaka H, Matsuzaki S, Katakai T, Suematsu M, Hamachi I, Yegutkin GG, Salmi M, Jalkanen S, Miyasaka M. Extracellular ATP Limits Homeostatic T Cell Migration Within Lymph Nodes. Front Immunol 2022; 12:786595. [PMID: 35003105 PMCID: PMC8728011 DOI: 10.3389/fimmu.2021.786595] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 12/03/2021] [Indexed: 12/20/2022] Open
Abstract
Whereas adenosine 5'-triphosphate (ATP) is the major energy source in cells, extracellular ATP (eATP) released from activated/damaged cells is widely thought to represent a potent damage-associated molecular pattern that promotes inflammatory responses. Here, we provide suggestive evidence that eATP is constitutively produced in the uninflamed lymph node (LN) paracortex by naïve T cells responding to C-C chemokine receptor type 7 (CCR7) ligand chemokines. Consistently, eATP was markedly reduced in naïve T cell-depleted LNs, including those of nude mice, CCR7-deficient mice, and mice subjected to the interruption of the afferent lymphatics in local LNs. Stimulation with a CCR7 ligand chemokine, CCL19, induced ATP release from LN cells, which inhibited CCR7-dependent lymphocyte migration in vitro by a mechanism dependent on the purinoreceptor P2X7 (P2X7R), and P2X7R inhibition enhanced T cell retention in LNs in vivo. These results collectively indicate that paracortical eATP is produced by naïve T cells in response to constitutively expressed chemokines, and that eATP negatively regulates CCR7-mediated lymphocyte migration within LNs via a specific subtype of ATP receptor, demonstrating its fine-tuning role in homeostatic cell migration within LNs.
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Affiliation(s)
- Daichi Kobayashi
- Department of Immunology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Department of Pharmacology, Wakayama Medical University, Wakayama, Japan
| | - Yuki Sugiura
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Eiji Umemoto
- Laboratory of Microbiology and Immunology, University of Shizuoka, Shizuoka, Japan
| | - Akira Takeda
- MediCity Research Laboratory, University of Turku, Turku, Finland
| | - Hisashi Ueta
- Department of Anatomy, School of Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Haruko Hayasaka
- Laboratory of Immune Molecular Function, Faculty of Science and Engineering, Kindai University, Higashi-Osaka, Japan
| | - Shinsuke Matsuzaki
- Department of Pharmacology, Wakayama Medical University, Wakayama, Japan.,Department of Radiological Sciences, Morinomiya University of Medical Sciences, Osaka, Japan
| | - Tomoya Katakai
- Department of Immunology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Makoto Suematsu
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Itaru Hamachi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | | | - Marko Salmi
- MediCity Research Laboratory, University of Turku, Turku, Finland.,Institute of Biomedicine, University of Turku, Turku, Finland
| | - Sirpa Jalkanen
- MediCity Research Laboratory, University of Turku, Turku, Finland
| | - Masayuki Miyasaka
- MediCity Research Laboratory, University of Turku, Turku, Finland.,Department of Microbiology and Immunology, Osaka University Graduate School of Medicine, Suita, Japan.,World Premier International (WPI) Immunology Frontier Research Center, Osaka University, Suita, Japan
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46
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Optimized HPLC method to elucidate the complex purinergic signaling dynamics that regulate ATP, ADP, AMP, and adenosine levels in human blood. Purinergic Signal 2022; 18:223-239. [DOI: 10.1007/s11302-022-09842-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 01/06/2022] [Indexed: 10/19/2022] Open
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47
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Brock VJ, Wolf IMA, Er-Lukowiak M, Lory N, Stähler T, Woelk LM, Mittrücker HW, Müller CE, Koch-Nolte F, Rissiek B, Werner R, Guse AH, Diercks BP. P2X4 and P2X7 are essential players in basal T cell activity and Ca 2+ signaling milliseconds after T cell activation. SCIENCE ADVANCES 2022; 8:eabl9770. [PMID: 35119925 PMCID: PMC8816335 DOI: 10.1126/sciadv.abl9770] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 12/14/2021] [Indexed: 05/20/2023]
Abstract
Initial T cell activation is triggered by the formation of highly dynamic, spatiotemporally restricted Ca2+ microdomains. Purinergic signaling is known to be involved in Ca2+ influx in T cells at later stages compared to the initial microdomain formation. Using a high-resolution Ca2+ live-cell imaging system, we show that the two purinergic cation channels P2X4 and P2X7 not only are involved in the global Ca2+ signals but also promote initial Ca2+ microdomains tens of milliseconds after T cell stimulation. These Ca2+ microdomains were significantly decreased in T cells from P2rx4-/- and P2rx7-/- mice or by pharmacological inhibition or blocking. Furthermore, we show a pannexin-1-dependent activation of P2X4 in the absence of T cell receptor/CD3 stimulation. Subsequently, upon T cell receptor/CD3 stimulation, ATP release is increased and autocrine activation of both P2X4 and P2X7 then amplifies initial Ca2+ microdomains already in the first second of T cell activation.
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Affiliation(s)
- Valerie J. Brock
- The Ca Signalling Group, Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Insa M. A. Wolf
- The Ca Signalling Group, Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Marco Er-Lukowiak
- Department of Neurology, University Medical Centre Hamburg Eppendorf, 20246 Hamburg, Germany
| | - Niels Lory
- Department of Immunology, University Medical Centre Hamburg Eppendorf, 20246 Hamburg, Germany
| | - Tobias Stähler
- Department of Immunology, University Medical Centre Hamburg Eppendorf, 20246 Hamburg, Germany
| | - Lena-Marie Woelk
- Department of Computational Neuroscience, University Medical Centre Hamburg Eppendorf, 20246 Hamburg, Germany
| | - Hans-Willi Mittrücker
- Department of Immunology, University Medical Centre Hamburg Eppendorf, 20246 Hamburg, Germany
| | | | - Friedrich Koch-Nolte
- Department of Immunology, University Medical Centre Hamburg Eppendorf, 20246 Hamburg, Germany
| | - Björn Rissiek
- Department of Neurology, University Medical Centre Hamburg Eppendorf, 20246 Hamburg, Germany
| | - René Werner
- Department of Computational Neuroscience, University Medical Centre Hamburg Eppendorf, 20246 Hamburg, Germany
| | - Andreas H. Guse
- The Ca Signalling Group, Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Björn-Philipp Diercks
- The Ca Signalling Group, Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
- Corresponding author.
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48
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Eberhardt N, Bergero G, Mazzocco Mariotta YL, Aoki MP. Purinergic modulation of the immune response to infections. Purinergic Signal 2022; 18:93-113. [PMID: 34997903 PMCID: PMC8742569 DOI: 10.1007/s11302-021-09838-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 12/17/2021] [Indexed: 02/07/2023] Open
Abstract
Infectious diseases are caused by the invasion of pathogenic microorganisms such as fungi, bacteria, viruses, and parasites. After infection, disease progression relies on the complex interplay between the host immune response and the microorganism evasion strategies. The host's survival depends on its ability to mount an efficient protective anti-microbial response to accomplish pathogen clearance while simultaneously preventing tissue injury by keeping under control the excessive inflammatory process. The purinergic system has the dual function of regulating the immune response and triggering effector antimicrobial mechanisms. This review provides an overview of the current knowledge of the modulation of innate and adaptive immunity driven by the purinergic system during parasitic, bacterial and viral infections.
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Affiliation(s)
- Natalia Eberhardt
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET) - Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Present Address: Department of Medicine, Leon H. Charney Division of Cardiology, New York University School of Medicine, New York, USA
| | - Gastón Bergero
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET) - Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Yanina L. Mazzocco Mariotta
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET) - Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - M. Pilar Aoki
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET) - Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Haya de La Torre and Medina Allende, Ciudad Universitaria, CP 5000 Córdoba, Argentina
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49
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Larrañaga-Vera A, Marco-Bonilla M, Largo R, Herrero-Beaumont G, Mediero A, Cronstein B. ATP transporters in the joints. Purinergic Signal 2021; 17:591-605. [PMID: 34392490 PMCID: PMC8677878 DOI: 10.1007/s11302-021-09810-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 07/09/2021] [Indexed: 02/08/2023] Open
Abstract
Extracellular adenosine triphosphate (ATP) plays a central role in a wide variety of joint diseases. ATP is generated intracellularly, and the concentration of the extracellular ATP pool is determined by the regulation of its transport out of the cell. A variety of ATP transporters have been described, with connexins and pannexins the most commonly cited. Both form intercellular channels, known as gap junctions, that facilitate the transport of various small molecules between cells and mediate cell-cell communication. Connexins and pannexins also form pores, or hemichannels, that are permeable to certain molecules, including ATP. All joint tissues express one or more connexins and pannexins, and their expression is altered in some pathological conditions, such as osteoarthritis (OA) and rheumatoid arthritis (RA), indicating that they may be involved in the onset and progression of these pathologies. The aging of the global population, along with increases in the prevalence of obesity and metabolic dysfunction, is associated with a rising frequency of joint diseases along with the increased costs and burden of related illness. The modulation of connexins and pannexins represents an attractive therapeutic target in joint disease, but their complex regulation, their combination of gap-junction-dependent and -independent functions, and their interplay between gap junction and hemichannel formation are not yet fully elucidated. In this review, we try to shed light on the regulation of these proteins and their roles in ATP transport to the extracellular space in the context of joint disease, and specifically OA and RA.
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Affiliation(s)
- Ane Larrañaga-Vera
- Department of Medicine, Division of Translational Medicine, NYU Langone Health, New York, NY, USA
| | - Miguel Marco-Bonilla
- Bone and Joint Research Unit, IIS-Fundación Jiménez Díaz UAM, 28040, Madrid, Spain
| | - Raquel Largo
- Bone and Joint Research Unit, IIS-Fundación Jiménez Díaz UAM, 28040, Madrid, Spain
| | | | - Aránzazu Mediero
- Bone and Joint Research Unit, IIS-Fundación Jiménez Díaz UAM, 28040, Madrid, Spain.
| | - Bruce Cronstein
- Department of Medicine, Division of Translational Medicine, NYU Langone Health, New York, NY, USA
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50
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Ďurčo F, Köstlin-Gille N, Poets CF, Gille C. Modulatory activity of adenosine on the immune response in cord and adult blood. Pediatr Res 2021; 90:989-997. [PMID: 33564128 DOI: 10.1038/s41390-020-01275-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 09/29/2020] [Accepted: 10/23/2020] [Indexed: 01/30/2023]
Abstract
BACKGROUND Neonatal sepsis is a leading cause of neonatal morbidity and mortality, associated with immunosuppression. Myeloid-derived suppressor cells (MDSCs) are cells with immunosuppressive activity, present in high amounts in cord blood. Mechanisms regulating MDSC expansion are incompletely understood. Adenosine is a metabolite with immunoregulatory effects that are elevated in cord blood. METHODS Impact of adenosine on peripheral and cord blood mononuclear cells (PBMCs and CBMCs) was analysed by quantification of ectonucleotidases and adenosine receptor expression, MDSC induction from PBMCs and CBMCs, their suppressive capacity on T cell proliferation and effector enzyme expression by flow cytometry. RESULTS Cord blood monocytes mainly expressed CD39, while cord blood T cells expressed CD73. Adenosine-induced MDSCs from PBMCs induced indoleamine-2,3-dioxygenase (IDO) expression and enhanced arginase I expression in monocytes. Concerted action of IDO and ArgI led to effective inhibition of T cell proliferation. In addition, adenosine upregulated inhibitory A3 receptors on monocytes. CONCLUSION Adenosine acts by inducing MDSCs and upregulating inhibitory A3 receptors, probably as a mode of autoregulation. Thus, adenosine contributes to immunosuppressive status and may be a target for immunomodulation during pre- and postnatal development. IMPACT Immune effector cells, that is, monocytes, T cells and MDSCs from cord blood express ectonucleotidases CD39 and CD73 and may thus serve as a source for adenosine as an immunomodulatory metabolite. Adenosine mediates its immunomodulatory properties in cord blood by inducing MDSCs, and by modulating the inhibitory adenosine A3 receptor on monocytes. Adenosine upregulates expression of IDO in MDSCs and monocytes potentially contributing to their suppressive activity.
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Affiliation(s)
- Filip Ďurčo
- Department of Neonatology, University Children's Hospital, Tuebingen, Germany
| | | | - Christian F Poets
- Department of Neonatology, University Children's Hospital, Tuebingen, Germany
| | - Christian Gille
- Department of Neonatology, University Children's Hospital, Tuebingen, Germany.
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