Cited by 288Viral Infections and Immunology ResearchT-cell and B-cell ImmunologyCardiac Fibrosis and Remodeling

PD-1 Protects against Inflammation and Myocyte Damage in T Cell-Mediated Myocarditis

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Tarrio, Margarite L, Grabie, Nir, Bu, De-xiu, Sharpe, Arlene H, Lichtman, Andrew H·2012·The Journal of Immunology

Abstract

PD-1, a member of the CD28 family of immune regulatory molecules, is expressed on activated T cells, interacts with its ligands, PD-L1/B7-H1 and PD-L2/B7-DC, on other cells, and delivers inhibitory signals to the T cell. We studied the role of this pathway in modulating autoreactive T cell responses in two models of myocarditis. In a CD8+ T cell-mediated adoptive transfer model, we found that compared with Pd1+/+ CD8+ T cells, Pd1−/− CD8+ T cells cause enhanced disease, with increased inflammatory infiltrate, particularly rich in neutrophils. Additionally, we show enhanced proliferation in vivo and enhanced cytotoxic activity of PD-1–deficient T lymphocytes against myocardial endothelial cells in vitro. In experimental autoimmune myocarditis, a disease model dependent on CD4+ T cells, we show that mice lacking PD-1 develop enhanced disease compared with wild-type mice. PD-1–deficient mice displayed increased inflammation, enhanced serum markers of myocardial damage, and an increased infiltration of inflammatory cells, including CD8+ T cells. Together, these studies show that PD-1 plays an important role in limiting T cell responses in the heart.

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Crossref · 10.4049/jimmunol.1200389

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  • This finding was not recapitulated in a separately generated PD-1 genetic knockout mouse model in a BALB/c background.

    “this finding was not recapitulated in a separately generated PD-1 genetic knockout mouse model in a BALB/c background”

    From Autoimmune Myocarditis, Old Dogs and New Tricks. (2024) · cites this paper as [98]

    Materials & Methods (Animal Studies; page unavailable) confirms that the paper used PD-1 knockout mice on a BALB/c background. But the paper does not say that a prior finding was not recapitulated in those mice: the Introduction reports prior spontaneous dilated cardiomyopathy in BALB/c PD-1-deficient mice, while the Results describe increased pathology after experimentally induced myocarditis. (LLM, conf=0.86)

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  • Anti-cTnI IgG levels were not significantly elevated in the ICI myocarditis mouse model induced with anti-PD-1 antibody treatment.

    “anti-cTnI IgG levels were not significantly elevated in the ICI myocarditis mouse model induced with anti-PD-1 antibody treatment.”

    From Autoimmune Myocarditis, Old Dogs and New Tricks. (2024) · cites this paper as [98]

    The Materials & Methods section ('Serum troponis determinations'; page not provided) measures circulating cardiac troponin I, not anti-cTnI IgG. The myocarditis-induction methods describe transfer of PD-1-deficient T cells rather than anti-PD-1 antibody treatment. Searches for anti-cTnI IgG and anti-PD-1 antibody treatment found no result addressing the claimed antibody levels. (LLM, conf=0.76)

    Experimental — accuracy not yet measured
  • The finding of anti-cTnI antibody cardiotoxicity was not replicated in other researchers' investigations.

    “However, this finding was not replicated in other researchers' investigations”

    From Autoimmune Myocarditis, Old Dogs and New Tricks. (2024) · cites this paper as [98]

    The References section lists a study attributing cardiomyopathy to anti-cTnI autoantibodies, but does not say whether other investigators replicated that finding. The Discussion and Results address PD-1-related heart injury, not attempts to reproduce antibody cardiotoxicity (searched: replicated, autoantibodies, and failed reproduction). (LLM, conf=0.74)

    Experimental — accuracy not yet measured

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Authors
Tarrio, M. L., Grabie, N., Bu, D.-X., Sharpe, A. H., & Lichtman, A. H.
Affiliations
Brigham and Women's Hospital (US)
Venue
The Journal of Immunology
Published
2012-05
Volume
188
Issue
10
Pages
4876-4884
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W2130852062
Cited by
288
References
43
Citations by year
2026: 20 · 2025: 21 · 2024: 27 · 2023: 24 · 2022: 31 · 2021: 32 · 2020: 29 · 2019: 26 · 2018: 26 · 2017: 21 · 2016: 12 · 2015: 5 · 2014: 5 · 2013: 6 · 2012: 3
FWCI
3.86
Type
journal article
Language
en
Open access
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Brigham and Women's Hospital
  • National Institutes of Health (HL‐36028, HL56985)
  • National Heart, Lung, and Blood Institute (P50HL056985, R01 HL36028, P01HL036028, R01HL087282)
  • National Institute of Allergy and Infectious Diseases (R01AI040614, P01AI056299)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Viral Infections and Immunology Research
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Fibrosis and Remodeling
Keywords
PD-1, PD-L1, PD-L2, experimental autoimmune myocarditis, adoptive transfer, CD8+ T cells, CD4+ T cells, myocarditis, myocardial injury, neutrophils, T cell proliferation, cytotoxicity, immune checkpoint
MeSH terms
Amino Acid Sequence, Animals, Cell Movement, Cells, Cultured, Disease Models, Animal, Female, Inflammation, Male, Mice, Inbred BALB C, Mice, Inbred C57BL, Mice, Transgenic, Molecular Sequence Data, Myocarditis, T-Lymphocyte Subsets, Mice, Knockout, Coculture Techniques, Muscle Cells, Mice, Programmed Cell Death 1 Receptor

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