Cited by 29Viral Infections and Immunology Researchvaccines and immunoinformatics approachesDiabetes and associated disorders

Viral myocarditis involves the generation of autoreactive T cells with multiple antigen specificities that localize in lymphoid and non-lymphoid organs in the mouse model of CVB3 infection

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Basavalingappa, Rakesh H., Arumugam, Rajkumar, Lasrado, Ninaad, Yalaka, Bharathi, Massilamany, Chandirasegaran, Gangaplara, Arunakumar, Riethoven, Jean-Jack, Xiang, Shi-Hua +2 more·2020·Molecular Immunology

Abstract

Autoreactive T cells may contribute to post-viral myocarditis induced with Coxsackievirus B3 (CVB3), but the underlying mechanisms of their generation are unclear. Here, we have comprehensively analyzed the generation of antigen-specific, autoreactive T cells in the mouse model of CVB3 infection for antigens implicated in patients with myocarditis/dilated cardiomyopathy. First, comparative analysis of CVB3 proteome with five autoantigens led us to identify three mimicry epitopes, one each from adenine nucleotide translocator 1 (ANT), sarcoplasmic/endoplasmic reticulum Ca2+ ATPase 2a (SERCA2a) and cardiac troponin I. None of these induced cross-reactive T cell responses. Next, we generated major histocompatibility complex (MHC) class II dextramers to enumerate the frequencies of antigen-specific T cells to determine whether T cells with multiple antigen specificities are generated by CVB3 infection. These analyses revealed appearance of CD4 T cells positive for SERCA2a 971-990, and cardiac myosin heavy chain-α (Myhc) 334-352 dextramers, both in the periphery and also in the hearts of CVB3-infected animals. While ANT 21-40 dextramer+ T cells were inconsistently detected, the β1-adrenergic receptor 181-200/211-230 or branched chain α-ketoacid dehydrogenase kinase 111-130 dextramer+ cells were absent. Interestingly, SERCA2a 971-990, Myhc 334-352 and ANT 21-40 dextramer+ cells were also detected in the liver indicating that they may have a pathogenic role. Finally, we demonstrate that the SERCA2a 971-990-reactive T cells generated in CVB3 infection could transfer disease to naïve mice. The data suggest that CVB3 infection can lead to the generation of autoreactive T cells for multiple antigens indicating a possibility that the autoreactive T cells localized in the liver can potentially circulate and contribute to the development of viral myocarditis.

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Crossref · 10.1016/j.molimm.2020.06.017

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  • Autoreactive T cells specific to cardiac myosin and other heart antigens can be generated during viral myocarditis in mice.

    “cells specific to cardiac myosin and other heart antigens can be generated during viral myocarditis in mice. 267,268”

    From Autoimmune Myocarditis, Old Dogs and New Tricks. (2024) · cites this paper as [267]

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Authors
Basavalingappa, R. H., Arumugam, R., Lasrado, N., Yalaka, B., Massilamany, C., Gangaplara, A., Riethoven, J.-J., Xiang, S.-H., Steffen, D., & Reddy, J.
Affiliations
  • University of Nebraska–Lincoln (US)
  • Bristol-Myers Squibb (United States) (US)
  • National Heart, Lung, and Blood Institute (US)
Corresponding author
Reddy, Jay
Venue
Molecular Immunology
Publisher
Elsevier BV
Published
2020-08
Volume
124
Pages
218-228
ISSN
0161-5890 (ISSN-L)
OpenAlex
W3040042837
Cited by
29
References
82
Citations by year
2026: 4 · 2025: 2 · 2024: 4 · 2023: 5 · 2022: 8 · 2021: 5 · 2020: 1
FWCI
2.94
Type
journal article
Language
en
Open access
Locations
  • Molecular Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Lincoln (University of Nebraska) (submittedVersion)
Funders
  • University of Nebraska-Lincoln (21-5721-0004-ORED)
  • National Institutes of Health (HL114669)
  • American Heart Association (18TPA34170206)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Viral Infections and Immunology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › vaccines and immunoinformatics approaches
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Diabetes and associated disorders
Keywords
viral myocarditis, coxsackievirus B3, autoreactive T cells, epitope mimicry, autoantigens, SERCA2a, cardiac troponin I, ANT1, cardiac myosin heavy chain, liver, dilated cardiomyopathy, T cell transfer, cross-reactive T cells
MeSH terms
Animals, Autoantigens, Coxsackievirus Infections, Cross Reactions, Disease Models, Animal, Female, Male, Myocarditis, CD4-Positive T-Lymphocytes, Autoimmunity, Enterovirus B, Human, Mice

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