Cited by 230Viral Infections and Immunology ResearchCardiac Fibrosis and RemodelingOcular Diseases and Behçet’s Syndrome

Cardiac myosin-Th17 responses promote heart failure in human myocarditis

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Myers, Jennifer M., Cooper, Leslie T., Kem, David C., Stavrakis, Stavros, Kosanke, Stanley D., Shevach, Ethan M., Fairweather, DeLisa, Stoner, Julie A. +2 more·2016·JCI Insight

Abstract

In human myocarditis and its sequela dilated cardiomyopathy (DCM), the mechanisms and immune phenotype governing disease and subsequent heart failure are not known. Here, we identified a Th17 cell immunophenotype of human myocarditis/DCM with elevated CD4 + IL17 + T cells and Th17-promoting cytokines IL-6, TGF-β, and IL-23 as well as GM-CSF–secreting CD4 + T cells. The Th17 phenotype was linked with the effects of cardiac myosin on CD14 + monocytes, TLR2, and heart failure. Persistent heart failure was associated with high percentages of IL-17–producing T cells and IL-17–promoting cytokines, and the myocarditis/DCM phenotype included significantly low percentages of FOXP3 + Tregs, which may contribute to disease severity. We demonstrate a potentially novel mechanism in human myocarditis/DCM in which TLR2 peptide ligands from human cardiac myosin stimulated exaggerated Th17-related cytokines including TGF-β, IL-6, and IL-23 from myocarditic CD14 + monocytes in vitro, and an anti-TLR2 antibody abrogated the cytokine response. Our translational study explains how an immune phenotype may be initiated by cardiac myosin TLR ligand stimulation of monocytes to generate Th17-promoting cytokines and development of pathogenic Th17 cells in human myocarditis and heart failure, and provides a rationale for targeting IL-17A as a therapeutic option.

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Crossref · 10.1172/jci.insight.85851

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85 of 85 references verified0 citation errors · 0 not checkable

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  • IL-1β increases serum and cardiac IL-6 levels that are needed to drive Th17 responses, which promote fibrosis and progression to DCM and heart failure in patients with myocarditis and in animal models.

    “IL-1 β also increases serum and cardiac IL-6 levels that are needed to drive Th17 responses, which also promote fibrosis and progression to DCM and heart failure in patients with myocarditis and in animal models. 36,165,172-174”

    From COVID-19, Myocarditis and Pericarditis (2023) · cites this paper as [36]

    The Results report elevated peripheral-blood IL-6 in patients with myocarditis/DCM and describe IL-6 as necessary for Th17 differentiation. The Discussion links Th17 responses with fibrosis and heart failure in humans, while noting that the human fibrosis finding is correlational and that mouse studies provide additional support. The paper does not show that IL-1β increases serum or cardiac IL-6 levels; it reports IL-1β and IL-6 together as Th17-associated cytokines. (LLM, conf=0.88)

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  • Following infection, viruses and heart antigens resulting from cardiac damage trigger innate immune responses by engaging TLRs, potentially leading to activation of antiviral adaptive immunity and B cells and T cells targeting cardiac autoantigens.

    “Following infection, viruses and heart antigens resulting from cardiac damage trigger innate immune responses by engaging TLRs, potentially leading to the activation of antiviral adaptive immunity and B cells and T cells targeting cardiac autoantigens”

    From Autoimmune Myocarditis, Old Dogs and New Tricks. (2024) · cites this paper as [64]

    Split into 2 atoms — 0 confirmed, 2 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

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  • Recent studies implemented pathogenic T cells as potential diagnostic or therapeutic targets for autoimmune myocarditis including ICI myocarditis, demonstrating promising outcomes at both clinical and preclinical levels.

    “Recent studies implemented pathogenic T cells as potential diagnostic or therapeutic targets for autoimmune myocarditis including ICI myocarditis, demonstrating promising outcomes at both clinical and preclinical levels. 51,64,238,254,260,311,312”

    From Autoimmune Myocarditis, Old Dogs and New Tricks. (2024) · cites this paper as [64]

    The Discussion (page unavailable) identifies Th17 cells as potential therapeutic targets and describes the study as a first step toward improved diagnosis and treatment of human myocarditis. The Introduction also reports reduced myocarditis after anti–IL-23 treatment in a mouse model. The paper does not address ICI myocarditis or demonstrate promising clinical outcomes from implementing T-cell-targeted diagnosis or treatment. (LLM, conf=0.88)

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  • Autoreactive T cells specific for α-MyHC are present in peripheral blood mononuclear cells of patients with myocarditis.

    “Subsequent investigations revealed the presence of these autoreactive T cells in the peripheral blood mononuclear cells of patients with myocarditis”

    From Autoimmune Myocarditis, Old Dogs and New Tricks. (2024) · cites this paper as [64]

    The Results section (“Th17 immunophenotype contributes to myocarditis, DCM, and heart failure”; page unavailable) reports elevated Th17 cells in peripheral blood of patients with myocarditis/DCM. The Methods section (“Phenotyping of blood immune T cells by flow cytometry”; page unavailable) describes measuring these cells in PBMCs, but does not establish that the T cells were specific for α-MyHC. The reported cardiac-myosin responses in PBMCs were attributed to CD14+ monocytes, not antigen-specific T cells. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • In patients with myocarditis, the number of Th17 cells is increased in PBMC and myocardial tissue, and Th17-type cytokine levels are associated with heart failure and nonrecovery conditions.

    “in patients with myocarditis, the number of Th17 cells was increased in the PBMC and myocardial tissue, and Th17-type cytokine levels were associated with heart failure and nonrecovery conditions”

    From Autoimmune Myocarditis, Old Dogs and New Tricks. (2024) · cites this paper as [64]

    The Results report significantly elevated Th17 cells in peripheral blood of myocarditis/DCM patients and associate Th17-related cytokines with heart failure and nonrecovery. Myocardial biopsies showed IL-17A–positive cells in 5 of 11 patients, but the paper does not establish that Th17 cell numbers were increased in myocardial tissue. Page numbers are unavailable in our copy. (LLM, conf=0.88)

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Cites

1 retracted

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3 of the 88 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. [7]Cooper L Knowlton K Mann D Zipes D Libby P Bonow R Myocarditis Braunwald’s Heart Disease: A Textbook of Cardiovascular Medicine 2014 10th Philadelphia, Pennsylvania, USA Elsevier 1589 1602
  2. [23]Smith SC Allen PM Myosin-induced acute myocarditis is a T cell mediated disease J Immunol 1991 147 7 2141 2147 1918949
  3. [62]Baldeviano GC Interleukin-17A is dispensable for myocarditis but essential for the progression to dilated cardiomyopathy Circ Res 2010 106 10 1646 1655 20378858

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Authors
Myers, J. M., Cooper, L. T., Kem, D. C., Stavrakis, S., Kosanke, S. D., Shevach, E. M., Fairweather, D., Stoner, J. A., Cox, C. J., & Cunningham, M. W.
Affiliations
  • University of Oklahoma Health Sciences Center (US)
  • Mayo Clinic in Florida (US)
  • Department of Medicine/Endocrinology,
  • Medicine/Cardiology, and
  • National Institutes of Health (US)
  • Johns Hopkins University (US)
Corresponding author
  • Cox, Carol J.
  • Cunningham, Madeleine W.
Venue
JCI Insight
Published
2016-06-16
Volume
1
Issue
9
ISSN
2379-3708 (ISSN-L)
OpenAlex
W2434470226
Cited by
230
References
88
Citations by year
2026: 22 · 2025: 26 · 2024: 33 · 2023: 34 · 2022: 24 · 2021: 29 · 2020: 24 · 2019: 16 · 2018: 12 · 2017: 9 · 2016: 1
FWCI
10.43
Type
journal article
Language
en
Open access
Locations
  • JCI Insight (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Heart Association (U54GM104938)
  • University of Oklahoma
  • University of Oklahoma Health Sciences Center
  • National Heart, Lung, and Blood Institute (R01HL135165, R56HL056267, R01HL111938, R01HL056267, R37HL035280)
  • National Institute of General Medical Sciences (U54GM104938)
  • National Institute of Allergy and Infectious Diseases (T32AI007633)
  • National Institute of Environmental Health Sciences (R21ES024414)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Viral Infections and Immunology Research
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Fibrosis and Remodeling
  • Health Sciences › Medicine › Ophthalmology › Ocular Diseases and Behçet’s Syndrome
Keywords
myocarditis, dilated cardiomyopathy, heart failure, Th17 cells, cardiac myosin, TLR2, CD14+ monocytes, IL-17, interleukin-6, TGF-beta, IL-23, GM-CSF, regulatory T cells, Foxp3, autoimmunity

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