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Nicholas SAE, Helming SR, Ménoret A, Pathoulas C, Xu MM, Hensel J, Kimble AL, Heineman B, Jellison ER, Reese B, Zhou B, Rodriguez-Oquendo A, Vella AT, Murphy PA. Endothelial Immunosuppression in Atherosclerosis : Translational Control by Elavl1/HuR. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.02.605922. [PMID: 39131295 PMCID: PMC11312609 DOI: 10.1101/2024.08.02.605922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
Atherosclerotic plaques are defined by the accumulation of lipids and immune cells beneath the endothelium of the arterial intima. CD8 T cells are among the most abundant immune cell types in plaque, and conditions linked to their activation correlate with increased levels of cardiovascular disease. As lethal effectors of the immune response, CD8 T cell activation is suppressed at multiple levels. These checkpoints are critical in dampening autoimmune responses, and limiting damage in cardiovascular disease. Endothelial cells are well known for their role in recruiting CD8 T and other hematopoietic cells to low and disturbed flow (LDF) arterial regions that develop plaque, but whether they locally influence CD8 effector functions is unclear. Here, we show that endothelial cells can actively suppress CD8 T cell responses in settings of chronic plaque inflammation, but that this behavior is governed by expression of the RNA-binding protein Embryonic Lethal, Abnormal Vision-Like 1 (Elavl1). In response to immune cell recruitment in plaque, the endothelium dynamically shifts splicing of pre-mRNA and their translation to enhance expression of immune-regulatory proteins including C1q and CD27. This program is immuno-suppressive, and limited by Elavl1. We show this by Cdh5(PAC)-CreERT2-mediated deletion of Elavl1 (ECKO), and analysis of changes in translation by Translating Ribosome Affinity Purification (TRAP). In ECKO mice, the translational shift in chronic inflammation is enhanced, leading to increased ribosomal association of C1q components and other critical regulators of immune response and resulting in a ~70% reduction in plaque CD8 T cells. CITE-seq analysis of the remaining plaque T cells shows that they exhibit lower levels of markers associated with T cell receptor (TCR) signaling, survival, and activation. To understand whether the immunosuppressive mechanism occurred through failed CD8 recruitment or local modulation of T cell responses, we used a novel in vitro co-culture system to show that ECKO endothelial cells suppress CD8 T cell expansion-even in the presence of wild-type myeloid antigen-presenting cells, antigen-specific CD8 T cells, and antigen. Despite the induction of C1q mRNA by T cell co-culture in both wild-type and ECKO endothelial cells, we find C1q protein abundantly expressed only in co-culture with ECKO cells. Together, our data define a novel immune-suppressive transition in the endothelium, reminiscent of the transition of T cells to T-regs, and demonstrate the regulation of this process by Elavl1.
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Affiliation(s)
- Sarah-Anne E Nicholas
- Center for Vascular Biology and Calhoun Cardiology Center, UCONN Health School of Medicine, Farmington, CT
| | - Stephen R Helming
- Center for Vascular Biology and Calhoun Cardiology Center, UCONN Health School of Medicine, Farmington, CT
| | | | - Christopher Pathoulas
- Center for Vascular Biology and Calhoun Cardiology Center, UCONN Health School of Medicine, Farmington, CT
| | - Maria M Xu
- Department of Immunology, UCONN Health, Farmington, CT
| | - Jessica Hensel
- Center for Vascular Biology and Calhoun Cardiology Center, UCONN Health School of Medicine, Farmington, CT
| | - Amy L Kimble
- Center for Vascular Biology and Calhoun Cardiology Center, UCONN Health School of Medicine, Farmington, CT
| | - Brent Heineman
- Center for Vascular Biology and Calhoun Cardiology Center, UCONN Health School of Medicine, Farmington, CT
| | | | - Bo Reese
- Institute for Systems Genomics - Center for Genome Innovation, UCONN, Storrs, CT
| | - Beiyan Zhou
- Department of Immunology, UCONN Health, Farmington, CT
| | | | | | - Patrick A Murphy
- Center for Vascular Biology and Calhoun Cardiology Center, UCONN Health School of Medicine, Farmington, CT
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Kumar AAW, Huangfu G, Figtree GA, Dwivedi G. Atherosclerosis as the Damocles' sword of human evolution: insights from nonhuman ape-like primates, ancient human remains, and isolated modern human populations. Am J Physiol Heart Circ Physiol 2024; 326:H821-H831. [PMID: 38305751 DOI: 10.1152/ajpheart.00744.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/25/2024] [Accepted: 01/30/2024] [Indexed: 02/03/2024]
Abstract
Atherosclerosis is the leading cause of death worldwide, and the predominant risk factors are advanced age and high-circulating low-density lipoprotein cholesterol (LDL-C). However, the findings of atherosclerosis in relatively young mummified remains and a lack of atherosclerosis in chimpanzees despite high LDL-C call into question the role of traditional cardiovascular risk factors. The inflammatory theory of atherosclerosis may explain the discrepancies between traditional risk factors and observed phenomena in current literature. Following the divergence from chimpanzees several millennia ago, loss of function mutations in immune regulatory genes and changes in gene expression have resulted in an overactive human immune system. The ubiquity of atherosclerosis in the modern era may reflect a selective pressure that enhanced the innate immune response at the cost of atherogenesis and other chronic disease states. Evidence provided from the fields of genetics, evolutionary biology, and paleoanthropology demonstrates a sort of circular dependency between inflammation, immune system functioning, and evolution at both a species and cellular level. More recently, the role of proinflammatory stimuli, somatic mutations, and the gene-environment effect appear to be underappreciated elements in the development and progression of atherosclerosis. Neurobiological stress, metabolic syndrome, and traditional cardiovascular risk factors may instead function as intermediary links between inflammation and atherosclerosis. Therefore, considering evolution as a mechanistic process and atherosclerosis as part of the inertia of evolution, greater insight into future preventative and therapeutic interventions for atherosclerosis can be gained by examining the past.
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Affiliation(s)
- Annora Ai-Wei Kumar
- Medical School, The University of Western Australia, Crawley, Western Australia, Australia
| | - Gavin Huangfu
- Medical School, The University of Western Australia, Crawley, Western Australia, Australia
- Department of Cardiology, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
- Harry Perkins Institute of Medical Research, Murdoch, Western Australia, Australia
| | - Gemma A Figtree
- Cardiovascular Discovery Group, Kolling Institute of Medical Research, St. Leonards, New South Wales, Australia
- Department of Cardiology, Royal North Shore Hospital, St. Leonards, New South Wales, Australia
| | - Girish Dwivedi
- Medical School, The University of Western Australia, Crawley, Western Australia, Australia
- Department of Cardiology, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
- Harry Perkins Institute of Medical Research, Murdoch, Western Australia, Australia
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Borker PV, Macatangay BJ, Margolick JB, Punjabi NM, Rinaldo CR, Stosor V, Hyong-Jin Cho J, McKay H, Patel SR. Shorter total sleep time is associated with lower CD4+/CD8+ T cell ratios in virally suppressed men with HIV. SLEEP ADVANCES : A JOURNAL OF THE SLEEP RESEARCH SOCIETY 2024; 5:zpae001. [PMID: 38420256 PMCID: PMC10901437 DOI: 10.1093/sleepadvances/zpae001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/06/2023] [Indexed: 03/02/2024]
Abstract
Study Objectives Although poor sleep quality is associated with lower CD4+ T cell counts among people living with HIV (PLWH), the association between objective sleep metrics and T lymphocyte subset counts is unknown. We evaluated the association between polysomnography (PSG) derived sleep metrics and T lymphocyte subpopulations in a cohort of men living with HIV. Methods Virally suppressed men living with HIV participating in the Multicenter AIDS Cohort Study underwent home overnight PSG. We assessed the association of PSG parameters with CD4+ and CD8+ T cell counts and the CD4+/CD8+ T cell ratio. Results Overall, 289 men with mean (±SD) age 55.3 ± 11.3 years and mean CD4+ T cell count 730 ± 308 cells/mm3 were evaluated. Total sleep time (TST) was significantly associated with CD8+ but not CD4+ T cell counts. After adjusting for age, race, depressive symptoms, antidepressant use, and non-nucleoside reverse transcriptase inhibitors use, every hour of shorter TST was associated with an additional 33 circulating CD8+ T cells/mm3 (p = 0.05) and a 5.6% (p = 0.0007) decline in CD4+/CD8+ T cell ratio. In adjusted models, every hour of shorter rapid eye movement (REM) sleep was associated with an additional 113 CD8+ T cells/mm3 (p = 0.02) and a 15.1% lower CD4+/CD8+ T cell ratio (p = 0.006). In contrast, measures of sleep efficiency and sleep-disordered breathing were not associated with differences in T lymphocyte subpopulations. Conclusions Our findings suggest that shorter TST and REM sleep durations are associated with differences in T lymphocyte subpopulations among men living with HIV. Addressing sleep may reflect a novel opportunity to improve immune function in PLWH.
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Affiliation(s)
- Priya V Borker
- Division of Pulmonary Allergy, Critical Care and Sleep Medicine, University of Pittsburgh, Pittsburgh, PAUSA
| | | | - Joseph B Margolick
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Naresh M Punjabi
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Charles R Rinaldo
- Division of Infectious Diseases, University of Pittsburgh, Pittsburgh, PAUSA
| | - Valentina Stosor
- Divisions of Infectious Diseases and Organ Transplantation, Northwestern University, Chicago, IL, USA
| | - Joshua Hyong-Jin Cho
- Cousins Center for Psychoneuroimmunology, Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, CAUSA
| | - Heather McKay
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Sanjay R Patel
- Division of Pulmonary Allergy, Critical Care and Sleep Medicine, University of Pittsburgh, Pittsburgh, PAUSA
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Banerjee A, Narasimhulu CA, Singla DK. Immune interactions in pembrolizumab (PD-1 inhibitor) cancer therapy and cardiovascular complications. Am J Physiol Heart Circ Physiol 2023; 325:H751-H767. [PMID: 37594487 PMCID: PMC10659324 DOI: 10.1152/ajpheart.00378.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/09/2023] [Accepted: 08/09/2023] [Indexed: 08/19/2023]
Abstract
The use of immunotherapies like pembrolizumab (PEM) is increasingly common for the management of numerous cancer types. The use of PEM to bolster T-cell response against tumor growth is well documented. However, the interactions PEM has on other immune cells to facilitate tumor regression and clearance is unknown and warrants further investigation. In this review, we present literature findings that have reported the interactions of PEM in stimulating innate and adaptive immune cells, which enhance cytotoxic phenotypes. This triggers secretion of cytokines and chemokines, which have both beneficial and detrimental effects. We also describe how this leads to the development of rare but underreported occurrence of PEM-induced immune-related cardiovascular complications that arise suddenly and progress rapidly to debilitating and fatal consequences. This review encourages further research and investigation of PEM-induced cardiovascular complications and other immune cell interactions in patients with cancer. As PEM therapy in treating cancer types is expanding, we expect that this review will inform health care professionals of diverse specializations of medicine like dermatology (melanoma skin cancers), ophthalmology (eye cancers), and pathology (hematological malignancies) about PEM-induced cardiac complications.
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Affiliation(s)
- Abha Banerjee
- Division of Metabolic and Cardiovascular Sciences, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States
| | - Chandrakala Aluganti Narasimhulu
- Division of Metabolic and Cardiovascular Sciences, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States
| | - Dinender K Singla
- Division of Metabolic and Cardiovascular Sciences, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, United States
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Reali E, Ferrando-Martinez S, Catalfamo M. Editorial: The Interplay Between Immune Activation and Cardiovascular Disease During Infection, Autoimmunity and Aging: The Role of T Cells. Front Immunol 2021; 12:719517. [PMID: 34249022 PMCID: PMC8264653 DOI: 10.3389/fimmu.2021.719517] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 06/09/2021] [Indexed: 12/03/2022] Open
Affiliation(s)
- Eva Reali
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | | | - Marta Catalfamo
- Department of Microbiology and Immunology, Georgetown University School of Medicine, Washington, DC, United States
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Hu X, Ma R, Cao J, Du X, Cai X, Fan Y. PTPN2 negatively regulates macrophage inflammation in atherosclerosis. Aging (Albany NY) 2020; 13:2768-2779. [PMID: 33411686 PMCID: PMC7880395 DOI: 10.18632/aging.202326] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 10/27/2020] [Indexed: 01/11/2023]
Abstract
Atherosclerosis is the main cause of cardiovascular disease. Systemic inflammation is one important characteristic in atherosclerosis. Pro-inflammatory macrophages can secrete inflammatory factors and promote the inflammation of atherosclerosis. It has a great value for the treatment of atherosclerosis by inhibiting the release of inflammatory factors in macrophages. However, the detailed mechanism of this process is still unclear. In this study, we constructed an APOE-/- mice model of atherosclerosis to research the molecular mechanism of atherosclerosis. Protein tyrosine phosphatase non-receptor type 2 (PTPN2), an anti-inflammatory gene, was dramatically decreased in inflammatory mice. Deletion of PTPN2 could significantly induce monocytes toward M1 phenotype of macrophages, enhance the secretion of IL-12 and IL-1, and promote cell proliferation, invasion and metastasis. Mechanism research showed that PTPN2-mediated p65/p38/STAT3 de-phosphorylation could block the process of macrophage inflammation. In vivo experiments showed that PTPN2 may effectively inhibit the inflammatory response during atherosclerosis. In conclusion, we uncovered the negative role of PTPN2 in the occurrence of atherosclerosis, and this study provides a new potential target for atherosclerosis treatment.
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Affiliation(s)
- Xiaorong Hu
- Department of Cardiology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Ruisong Ma
- Department of Cardiology, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang, Hubei, China
| | - Jianlei Cao
- Department of Cardiology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Xianjin Du
- Department of Emergency, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Xinyong Cai
- Department of Cardiology, Jiangxi Provincial People's Hospital Affiliated to Nanchang University, Nanchang, JiangXi, China
| | - Yongzhen Fan
- Department of Cardiology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
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Talepoor AG, Fouladseresht H, Khosropanah S, Doroudchi M. Immune-Inflammation in Atherosclerosis: A New Twist in an Old Tale. Endocr Metab Immune Disord Drug Targets 2020; 20:525-545. [DOI: 10.2174/1871530319666191016095725] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/26/2019] [Accepted: 09/23/2019] [Indexed: 12/27/2022]
Abstract
Background and Objective:Atherosclerosis, a chronic and progressive inflammatory disease, is triggered by the activation of endothelial cells followed by infiltration of innate and adaptive immune cells including monocytes and T cells in arterial walls. Major populations of T cells found in human atherosclerotic lesions are antigen-specific activated CD4+ effectors and/or memory T cells from Th1, Th17, Th2 and Treg subsets. In this review, we will discuss the significance of T cell orchestrated immune inflammation in the development and progression of atherosclerosis.Discussion:Pathogen/oxidative stress/lipid induced primary endothelial wound cannot develop to a full-blown atherosclerotic lesion in the absence of chronically induced inflammation. While the primary inflammatory response might be viewed as a lone innate response, the persistence of such a profound response over time must be (and is) associated with diverse local and systemic T cell responses. The interplay between T cells and innate cells contributes to a phenomenon called immuneinflammation and has an impact on the progression and outcome of the lesion. In recent years immuneinflammation, an old term, has had a comeback in connecting the puzzle pieces of chronic inflammatory diseases.Conclusion:Taking one-step back and looking from afar at the players of immune-inflammation may help us provide a broader perspective of these complicated interactions. This may lead to the identification of new drug targets and the development of new therapies as well as preventative measures.
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Affiliation(s)
- Atefe Ghamar Talepoor
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hamed Fouladseresht
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Shahdad Khosropanah
- Department of Cardiology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mehrnoosh Doroudchi
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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Ilatovskaya DV, Halade GV, DeLeon-Pennell KY. Adaptive immunity-driven inflammation and cardiovascular disease. Am J Physiol Heart Circ Physiol 2019; 317:H1254-H1257. [PMID: 31702971 DOI: 10.1152/ajpheart.00642.2019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The adaptive immune response has recently emerged as an important factor in a wide variety of cardiovascular disorders including atherosclerosis, hypertension, cardiac remodeling, and heart failure; however, its role is not fully understood. Since an assortment of innate responsive cells, e.g., neutrophils and monocytes/macrophages, coordinate with adaptive immunity, e.g., T cells, dendritic cells, and B cells, the temporal response and descriptions pertinent to the cellular phenotype and inflammation processes, in general, need additional investigation, clarification, and consensus particularly in cardiovascular disease. This Perspectives article reviews the contributions of 15 articles (including 7 reviews) published in the American Journal of Physiology-Heart and Circulatory Physiology in response to the Call for Papers: Adaptive Immunity in Cardiovascular Disease. Here, we summarize the crucial reported findings at the cardiac, vascular, immune, and molecular levels and discuss the translational feasibility and benefits of future prospective research into the adaptive immune response. Readers are encouraged to evaluate the data and learn from this collection of novel studies.
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Affiliation(s)
- Daria V Ilatovskaya
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina.,Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, South Carolina
| | - Ganesh V Halade
- Division of Cardiovascular Disease, Department of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Kristine Y DeLeon-Pennell
- Department of Medicine, Division of Cardiology, Medical University of South Carolina, Charleston, South Carolina.,Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina
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Herrero-Fernandez B, Gomez-Bris R, Somovilla-Crespo B, Gonzalez-Granado JM. Immunobiology of Atherosclerosis: A Complex Net of Interactions. Int J Mol Sci 2019; 20:E5293. [PMID: 31653058 PMCID: PMC6862594 DOI: 10.3390/ijms20215293] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 10/21/2019] [Accepted: 10/22/2019] [Indexed: 02/07/2023] Open
Abstract
Cardiovascular disease is the leading cause of mortality worldwide, and atherosclerosis the principal factor underlying cardiovascular events. Atherosclerosis is a chronic inflammatory disease characterized by endothelial dysfunction, intimal lipid deposition, smooth muscle cell proliferation, cell apoptosis and necrosis, and local and systemic inflammation, involving key contributions to from innate and adaptive immunity. The balance between proatherogenic inflammatory and atheroprotective anti-inflammatory responses is modulated by a complex network of interactions among vascular components and immune cells, including monocytes, macrophages, dendritic cells, and T, B, and foam cells; these interactions modulate the further progression and stability of the atherosclerotic lesion. In this review, we take a global perspective on existing knowledge about the pathogenesis of immune responses in the atherosclerotic microenvironment and the interplay between the major innate and adaptive immune factors in atherosclerosis. Studies such as this are the basis for the development of new therapies against atherosclerosis.
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Affiliation(s)
- Beatriz Herrero-Fernandez
- LamImSys Lab. Instituto de Investigación Hospital 12 de Octubre (imas12), 28041 Madrid, Spain.
- Departamento de Fisiología. Facultad de Medicina. Universidad Autónoma de Madrid (UAM), 28029 Madrid, Spain.
| | - Raquel Gomez-Bris
- LamImSys Lab. Instituto de Investigación Hospital 12 de Octubre (imas12), 28041 Madrid, Spain.
| | | | - Jose Maria Gonzalez-Granado
- LamImSys Lab. Instituto de Investigación Hospital 12 de Octubre (imas12), 28041 Madrid, Spain.
- Departamento de Fisiología. Facultad de Medicina. Universidad Autónoma de Madrid (UAM), 28029 Madrid, Spain.
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain.
- CIBER de Enfermedades Cardiovasculares, 28029 Madrid, Spain.
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