51
|
Can E, Mishkovsky M, Yoshihara HAI, Kunz N, Couturier DL, Petrausch U, Doucey MA, Comment A. Noninvasive rapid detection of metabolic adaptation in activated human T lymphocytes by hyperpolarized 13C magnetic resonance. Sci Rep 2020; 10:200. [PMID: 31932697 PMCID: PMC6957688 DOI: 10.1038/s41598-019-57026-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 11/18/2019] [Indexed: 11/18/2022] Open
Abstract
The metabolic shift induced in human CD4+ T lymphocytes by stimulation is characterized by an upregulation of glycolysis, leading to an augmentation in lactate production. This adaptation has already been highlighted with various techniques and reported in several previous studies. We herein propose a method to rapidly and noninvasively detect the associated increase in flux from pyruvate to lactate catalyzed by lactate dehydrogenase using hyperpolarized 13C magnetic resonance, a technique which can be used for in vivo imaging. It was shown that the conversion of hyperpolarized 13C-pyruvate to 13C-lactate during the one-minute measurement increased by a mean factor of 3.6 in T cells stimulated for 5 days as compared to resting T cells. This method can be extended to other metabolic substrates and is therefore a powerful tool to noninvasively analyze T cell metabolism, possibly in vivo.
Collapse
Affiliation(s)
- Emine Can
- Laboratory of Functional and Metabolic Imaging, Ecole Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland
| | - Mor Mishkovsky
- Laboratory of Functional and Metabolic Imaging, Ecole Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland
| | - Hikari A I Yoshihara
- Laboratory of Functional and Metabolic Imaging, Ecole Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland
| | - Nicolas Kunz
- Laboratory of Functional and Metabolic Imaging, Ecole Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland
| | - Dominique-Laurent Couturier
- Cancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shin Center, Robinson Way, Cambridge, CB2 0RE, United Kingdom
| | | | - Marie-Agnès Doucey
- Department of Oncology, University Hospital Lausanne (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Arnaud Comment
- Cancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shin Center, Robinson Way, Cambridge, CB2 0RE, United Kingdom. .,General Electric Healthcare, Chalfont St Giles, Buckinghamshire, HP8 4SP, United Kingdom.
| |
Collapse
|
52
|
Randzavola LO, Strege K, Juzans M, Asano Y, Stinchcombe JC, Gawden-Bone CM, Seaman MN, Kuijpers TW, Griffiths GM. Loss of ARPC1B impairs cytotoxic T lymphocyte maintenance and cytolytic activity. J Clin Invest 2019. [PMID: 31710310 DOI: 10.1172/jci129388)] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
CD8 cytotoxic T lymphocytes (CTLs) rely on rapid reorganization of the branched F-actin network to drive the polarized secretion of lytic granules, initiating target cell death during the adaptive immune response. Branched F-actin is generated by the nucleation factor actin-related protein 2/3 (Arp2/3) complex. Patients with mutations in the actin-related protein complex 1B (ARPC1B) subunit of Arp2/3 show combined immunodeficiency, with symptoms of immune dysregulation, including recurrent viral infections and reduced CD8+ T cell count. Here, we show that loss of ARPC1B led to loss of CTL cytotoxicity, with the defect arising at 2 different levels. First, ARPC1B is required for lamellipodia formation, cell migration, and actin reorganization across the immune synapse. Second, we found that ARPC1B is indispensable for the maintenance of TCR, CD8, and GLUT1 membrane proteins at the plasma membrane of CTLs, as recycling via the retromer and WASH complexes was impaired in the absence of ARPC1B. Loss of TCR, CD8, and GLUT1 gave rise to defects in T cell signaling and proliferation upon antigen stimulation of ARPC1B-deficient CTLs, leading to a progressive loss of CD8+ T cells. This triggered an activation-induced immunodeficiency of CTL activity in ARPC1B-deficient patients, which could explain the susceptibility to severe and prolonged viral infections.
Collapse
Affiliation(s)
- Lyra O Randzavola
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Katharina Strege
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Marie Juzans
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Yukako Asano
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Jane C Stinchcombe
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Christian M Gawden-Bone
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Matthew Nj Seaman
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Taco W Kuijpers
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Department of Pediatric Immunology, Rheumatology and Infectious Disease, Emma Children's Hospital, Medical Center Amsterdam University, Amsterdam, Netherlands
| | - Gillian M Griffiths
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| |
Collapse
|
53
|
Randzavola LO, Strege K, Juzans M, Asano Y, Stinchcombe JC, Gawden-Bone CM, Seaman MN, Kuijpers TW, Griffiths GM. Loss of ARPC1B impairs cytotoxic T lymphocyte maintenance and cytolytic activity. J Clin Invest 2019; 129:5600-5614. [PMID: 31710310 PMCID: PMC6877333 DOI: 10.1172/jci129388] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 09/10/2019] [Indexed: 12/30/2022] Open
Abstract
CD8 cytotoxic T lymphocytes (CTLs) rely on rapid reorganization of the branched F-actin network to drive the polarized secretion of lytic granules, initiating target cell death during the adaptive immune response. Branched F-actin is generated by the nucleation factor actin-related protein 2/3 (Arp2/3) complex. Patients with mutations in the actin-related protein complex 1B (ARPC1B) subunit of Arp2/3 show combined immunodeficiency, with symptoms of immune dysregulation, including recurrent viral infections and reduced CD8+ T cell count. Here, we show that loss of ARPC1B led to loss of CTL cytotoxicity, with the defect arising at 2 different levels. First, ARPC1B is required for lamellipodia formation, cell migration, and actin reorganization across the immune synapse. Second, we found that ARPC1B is indispensable for the maintenance of TCR, CD8, and GLUT1 membrane proteins at the plasma membrane of CTLs, as recycling via the retromer and WASH complexes was impaired in the absence of ARPC1B. Loss of TCR, CD8, and GLUT1 gave rise to defects in T cell signaling and proliferation upon antigen stimulation of ARPC1B-deficient CTLs, leading to a progressive loss of CD8+ T cells. This triggered an activation-induced immunodeficiency of CTL activity in ARPC1B-deficient patients, which could explain the susceptibility to severe and prolonged viral infections.
Collapse
Affiliation(s)
- Lyra O. Randzavola
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Katharina Strege
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Marie Juzans
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Yukako Asano
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Jane C. Stinchcombe
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | | | - Matthew N.J. Seaman
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Taco W. Kuijpers
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
- Department of Pediatric Immunology, Rheumatology and Infectious Disease, Emma Children’s Hospital, Medical Center Amsterdam University, Amsterdam, Netherlands
| | - Gillian M. Griffiths
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| |
Collapse
|
54
|
Fatty Acid Metabolites Combine with Reduced β Oxidation to Activate Th17 Inflammation in Human Type 2 Diabetes. Cell Metab 2019; 30:447-461.e5. [PMID: 31378464 PMCID: PMC8506657 DOI: 10.1016/j.cmet.2019.07.004] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 02/16/2019] [Accepted: 07/10/2019] [Indexed: 12/30/2022]
Abstract
Mechanisms that regulate metabolites and downstream energy generation are key determinants of T cell cytokine production, but the processes underlying the Th17 profile that predicts the metabolic status of people with obesity are untested. Th17 function requires fatty acid uptake, and our new data show that blockade of CPT1A inhibits Th17-associated cytokine production by cells from people with type 2 diabetes (T2D). A low CACT:CPT1A ratio in immune cells from T2D subjects indicates altered mitochondrial function and coincides with the preference of these cells to generate ATP through glycolysis rather than fatty acid oxidation. However, glycolysis was not critical for Th17 cytokines. Instead, β oxidation blockade or CACT knockdown in T cells from lean subjects to mimic characteristics of T2D causes cells to utilize 16C-fatty acylcarnitine to support Th17 cytokines. These data show long-chain acylcarnitine combines with compromised β oxidation to promote disease-predictive inflammation in human T2D.
Collapse
|
55
|
Contaifer D, Roberts CH, Kumar NG, Natarajan R, Fisher BJ, Leslie K, Reed J, Toor AA, Wijesinghe DS. A Preliminary Investigation towards the Risk Stratification of Allogeneic Stem Cell Recipients with Respect to the Potential for Development of GVHD via Their Pre-Transplant Plasma Lipid and Metabolic Signature. Cancers (Basel) 2019; 11:E1051. [PMID: 31349646 PMCID: PMC6721383 DOI: 10.3390/cancers11081051] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/12/2019] [Accepted: 07/18/2019] [Indexed: 12/15/2022] Open
Abstract
The clinical outcome of allogeneic hematopoietic stem cell transplantation (SCT) may be influenced by the metabolic status of the recipient following conditioning, which in turn may enable risk stratification with respect to the development of transplant-associated complications such as graft vs. host disease (GVHD). To better understand the impact of the metabolic profile of transplant recipients on post-transplant alloreactivity, we investigated the metabolic signature of 14 patients undergoing myeloablative conditioning followed by either human leukocyte antigen (HLA)-matched related or unrelated donor SCT, or autologous SCT. Blood samples were taken following conditioning and prior to transplant on day 0 and the plasma was comprehensively characterized with respect to its lipidome and metabolome via liquid chromatography/mass spectrometry (LCMS) and gas chromatography/mass spectrometry (GCMS). A pro-inflammatory metabolic profile was observed in patients who eventually developed GVHD. Five potential pre-transplant biomarkers, 2-aminobutyric acid, 1-monopalmitin, diacylglycerols (DG 38:5, DG 38:6), and fatty acid FA 20:1 demonstrated high sensitivity and specificity towards predicting post-transplant GVHD. The resulting predictive model demonstrated an estimated predictive accuracy of risk stratification of 100%, with area under the curve of the ROC of 0.995. The likelihood ratio of 1-monopalmitin (infinity), DG 38:5 (6.0), and DG 38:6 (6.0) also demonstrated that a patient with a positive test result for these biomarkers following conditioning and prior to transplant will be at risk of developing GVHD. Collectively, the data suggest the possibility that pre-transplant metabolic signature may be used for risk stratification of SCT recipients with respect to development of alloreactivity.
Collapse
Affiliation(s)
- Daniel Contaifer
- Department of Pharmacotherapy and Outcomes Sciences, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Catherine H Roberts
- Department of Internal Medicine, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Naren Gajenthra Kumar
- Department of Microbiology, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Ramesh Natarajan
- Department of Internal Medicine, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Bernard J Fisher
- Department of Internal Medicine, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Kevin Leslie
- Department of Physics, College of Humanities and Sciences, Virginia Commonwealth University, Richmond, VA 23284, USA
| | - Jason Reed
- Department of Physics, College of Humanities and Sciences, Virginia Commonwealth University, Richmond, VA 23284, USA
| | - Amir A Toor
- Department of Internal Medicine, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA.
- Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA.
| | - Dayanjan S Wijesinghe
- Department of Pharmacotherapy and Outcomes Sciences, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA.
- Institute for Structural Biology Drug Discovery and Development (ISB3D), VCU School of Pharmacy, Richmond, VA 23298, USA.
- Da Vinci Center, Virginia Commonwealth University, Richmond, VA 23284, USA.
| |
Collapse
|
56
|
Tanimine N, Germana SK, Fan M, Hippen K, Blazar BR, Markmann JF, Turka LA, Priyadharshini B. Differential effects of 2-deoxy-D-glucose on in vitro expanded human regulatory T cell subsets. PLoS One 2019; 14:e0217761. [PMID: 31170216 PMCID: PMC6553739 DOI: 10.1371/journal.pone.0217761] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 05/19/2019] [Indexed: 01/11/2023] Open
Abstract
Regulatory T cells (Tregs) are required for the maintenance of immune tolerance and adoptive Treg infusion therapy has become a promising approach to suppress immune responses in diseases such as autoimmunity and transplant rejection. However, one critical challenge of Treg therapy is the requirement of in vitro expansion of functionally stable Tregs while preventing either the contamination of T effector and/or emergence of unstable pathogenic Tregs. Recent studies showing distinct metabolic requirements of T effectors and Tregs suggest that manipulation of cell metabolism may be an attractive strategy to achieve this goal. Here we show that human thymically derived Tregs (tTregs) and in vitro induced Tregs (iTregs) from naive T cells engage glycolysis equivalently upon activation. However, inhibiting glucose metabolism via 2-deoxy-D-glucose (2DG) has distinct effects on each of these subsets. While 2DG treatment at the onset of activation significantly reduced the proliferation and expression of suppressive molecules such as ICOS and CTLA-4 in tTregs, its effect on FOXP3 expression was small. In contrast, 2DG treatment during iTreg induction modestly decreased their proliferation but strongly reduced both ICOS and FOXP3 expression. Importantly, both Treg subsets became insensitive to 2DG after day 3 post activation with little effect on either proliferation or FOXP3 expression while T conventional Th0 cells showed reduced proliferation under the same conditions. Moreover, 2DG treatment at day 3 did not impair the suppressive capabilities of Treg subsets. Collectively, these findings suggest that there is a distinct temporal requirement of glycolysis in each of the activated human Treg subsets and T conventional cells. Furthermore, 2DG treatment at the onset as a strategy to impair contaminating T effector cell proliferation is unfavorable for optimal Treg generation as well.
Collapse
Affiliation(s)
- Naoki Tanimine
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Sharon K. Germana
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Martin Fan
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Keli Hippen
- Department of Pediatrics, Division of Hematology/Oncology and Blood and Marrow Transplantation, University of Minnesota Cancer Center, Minneapolis, Minnesota, United States of America
| | - Bruce R. Blazar
- Department of Pediatrics, Division of Hematology/Oncology and Blood and Marrow Transplantation, University of Minnesota Cancer Center, Minneapolis, Minnesota, United States of America
| | - James F. Markmann
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Laurence A. Turka
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Rheos Medicines, Boston, Massachusetts, United States of America
| | - Bhavana Priyadharshini
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Rheos Medicines, Boston, Massachusetts, United States of America
- * E-mail:
| |
Collapse
|
57
|
Jones N, Vincent EE, Cronin JG, Panetti S, Chambers M, Holm SR, Owens SE, Francis NJ, Finlay DK, Thornton CA. Akt and STAT5 mediate naïve human CD4+ T-cell early metabolic response to TCR stimulation. Nat Commun 2019; 10:2042. [PMID: 31053703 PMCID: PMC6499791 DOI: 10.1038/s41467-019-10023-4] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 03/19/2019] [Indexed: 12/29/2022] Open
Abstract
Metabolic pathways that regulate T-cell function show promise as therapeutic targets in diverse diseases. Here, we show that at rest cultured human effector memory and central memory CD4+ T-cells have elevated levels of glycolysis and oxidative phosphorylation (OXPHOS), in comparison to naïve T-cells. Despite having low resting metabolic rates, naive T-cells respond to TCR stimulation with robust and rapid increases in glycolysis and OXPHOS. This early metabolic switch requires Akt activity to support increased rates of glycolysis and STAT5 activity for amino acid biosynthesis and TCA cycle anaplerosis. Importantly, both STAT5 inhibition and disruption of TCA cycle anaplerosis are associated with reduced IL-2 production, demonstrating the functional importance of this early metabolic program. Our results define STAT5 as a key node in modulating the early metabolic program following activation in naive CD4+ T-cells and in turn provide greater understanding of how cellular metabolism shapes T-cell responses.
Collapse
Affiliation(s)
- Nicholas Jones
- Institute of Life Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - Emma E Vincent
- MRC Integrative Epidemiology Unit, University of Bristol, Oakfield House, Bristol, BS8 2BN, UK
- Cellular and Molecular Medicine, University of Bristol, Biomedical Sciences Building, Bristol, BS8 1TD, UK
| | - James G Cronin
- Institute of Life Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - Silvia Panetti
- Institute of Life Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - Megan Chambers
- Institute of Life Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - Sean R Holm
- Institute of Life Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - Sian E Owens
- Institute of Life Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - Nigel J Francis
- Institute of Life Science, Swansea University Medical School, Swansea, SA2 8PP, UK
| | - David K Finlay
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearce Street, Dublin, Ireland
- School of Pharmacy and Pharmaceutical Sciences, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearce Street, Dublin, Ireland
| | - Catherine A Thornton
- Institute of Life Science, Swansea University Medical School, Swansea, SA2 8PP, UK.
| |
Collapse
|
58
|
Leslie KA, Rasheed M, Sabo RT, Roberts CC, Toor AA, Reed J. Reconstituting donor T cells increase their biomass following hematopoietic stem cell transplantation. Analyst 2018; 143:2479-2485. [DOI: 10.1039/c8an00148k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this study, we used a rapid, highly-sensitive, single-cell biomass measurement method, Live Cell Interferometry (LCI), to measure biomass in populations of CD3 + T cells isolated from hematopoietic stem cell transplant (SCT) patients at various times pre- and post-transplant (days 0–100).
Collapse
Affiliation(s)
- Kevin A. Leslie
- Department of Physics
- Virginia Commonwealth University
- Richmond
- USA
| | - Mahmood Rasheed
- Department of Internal Medicine
- Virginia Commonwealth University
- Richmond
- USA
- Department of Biostatistics
| | - Roy T. Sabo
- Department of Biostatistics
- Virginia Commonwealth University
- Richmond
- USA
| | - Catherine C. Roberts
- Department of Internal Medicine
- Virginia Commonwealth University
- Richmond
- USA
- Department of Biostatistics
| | - Amir A. Toor
- Department of Internal Medicine
- Virginia Commonwealth University
- Richmond
- USA
- Department of Biostatistics
| | - Jason Reed
- Department of Physics
- Virginia Commonwealth University
- Richmond
- USA
- Massey Cancer Center
| |
Collapse
|
59
|
Andreone L, Gimeno ML, Perone MJ. Interactions Between the Neuroendocrine System and T Lymphocytes in Diabetes. Front Endocrinol (Lausanne) 2018; 9:229. [PMID: 29867762 PMCID: PMC5966545 DOI: 10.3389/fendo.2018.00229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 04/20/2018] [Indexed: 12/16/2022] Open
Abstract
It is well established that there is a fine-tuned bidirectional communication between the immune and neuroendocrine tissues in maintaining homeostasis. Several types of immune cells, hormones, and neurotransmitters of different chemical nature are involved as communicators between organs. Apart of being key players of the adaptive arm of the immune system, it has been recently described that T lymphocytes are involved in the modulation of metabolism of several tissues in health and disease. Diabetes may result mainly from lack of insulin production (type 1 diabetes) or insufficient insulin and insulin resistance (type 2 diabetes), both influenced by genetic and environmental components. Herein, we discuss accumulating data regarding the role of the adaptive arm of the immune system in the pathogenesis of diabetes; including the action of several hormones and neurotransmitters influencing on central and peripheral T lymphocytes development and maturation, particularly under the metabolic burden triggered by diabetes. In addition, we comment on the role of T-effector lymphocytes in adipose and liver tissues during diabetes, which together enhances pancreatic β-cell stress aggravating the disease.
Collapse
|