Interleukin 21 (IL-21) regulates chronic allograft vasculopathy (CAV) in murine heart allograft rejection.

dc.contributor.author

Khattar, Mithun

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Baum, Caitlin E

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Schroder, Paul

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Breidenbach, Joshua D

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Haller, Steven T

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Chen, Wenhao

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Stepkowski, Stanislaw

dc.date.accessioned

2020-07-07T04:29:34Z

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2020-07-07T04:29:34Z

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2019-01

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2020-07-07T04:29:32Z

dc.description.abstract

IL-21 is the most recently discovered common gamma-chain cytokine that promotes persistent T-cell responses in chronic infections, autoimmunity and cancer. However, the therapeutic potential of inhibiting the IL-21-BATF signaling axis, particularly in transplant rejection, remains unclear. We used heart transplant models to examine the effects of IL-21 blockade in prevention of chronic cardiac allograft vasculopathy (CAV) using genetic knock-out and therapeutic approaches. Both wild-type C57BL/6 and IL-21-/- strains acutely rejected Balb/c skin grafts and once immunized with this skin graft, rejected Balb/c heart allografts in an accelerated fashion. However, when transplanted with heart grafts from the class-II major histocompatibility complex mutant, B6bm12 mice; wild-type recipients developed CAV, while IL-21-/- recipients were protected, even at day 100 post-transplant. Similarly, BATF-/- recipients, lacking the transcription factor BATF responsible for IL-21 production, did not develop CAV in B6-bm12 heart allografts. Strikingly, in a transient treatment protocol, the development of CAV in wild-type recipients of B6-bm12 hearts allografts was blocked by the administration of IL-21 receptor fusion protein (R-Fc). Thus, we demonstrate that CAV is regulated at least in part by IL-21 signaling and its blockade by genetic approaches or therapy with IL-21R-Fc prevents CAV in mice.

dc.identifier

PONE-D-19-18782

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1932-6203

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1932-6203

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https://hdl.handle.net/10161/21161

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eng

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Public Library of Science (PLoS)

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PloS one

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10.1371/journal.pone.0225624

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T-Lymphocytes

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Animals

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Mice, Inbred BALB C

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Mice, Inbred C57BL

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Mice, Knockout

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Mice

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Vascular Diseases

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Recombinant Fusion Proteins

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Interleukins

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Histocompatibility Antigens Class II

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Heart Transplantation

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Skin Transplantation

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Transplantation, Homologous

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Graft Rejection

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Basic-Leucine Zipper Transcription Factors

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Receptors, Interleukin-21

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Interferon-gamma

dc.title

Interleukin 21 (IL-21) regulates chronic allograft vasculopathy (CAV) in murine heart allograft rejection.

dc.type

Journal article

pubs.begin-page

e0225624

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11

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Staff

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Surgery

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Duke

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Clinical Science Departments

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School of Medicine

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Published

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14

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