4.8 Article

Targeting cardiomyocyte ADAM10 ectodomain shedding promotes survival early after myocardial infarction

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NATURE COMMUNICATIONS
卷 13, 期 1, 页码 -

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NATURE PORTFOLIO
DOI: 10.1038/s41467-022-35331-0

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资金

  1. German Research Foundation (DFG) [EL 270/7-3, Transregio-SFB CRC/TRR 205, KA 4194/3-3, 288034826, WA 2586/4-1, SFB877-A3, SFB1525-B03/453989101, CRC/TRR 296/1-P10/424957847]
  2. German Heart Foundation/German Foundation for Heart Research [F/34/19]
  3. German Cardiac Society [DGK10/2021]
  4. Foundation for Pathobiochemistry and Molecular Diagnostics [060.1052]

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After myocardial infarction, targeting the ADAM10/CX3CL1 axis can help regulate neutrophil recruitment, improve heart function, and reduce scar size by reducing inflammation and neutrophil infiltration.
After myocardial infarction the innate immune response is pivotal in clearing of tissue debris as well as scar formation, but exaggerated cytokine and chemokine secretion with subsequent leukocyte infiltration also leads to further tissue damage. Here, we address the value of targeting a previously unknown a disintegrin and metalloprotease 10 (ADAM10)/CX3CL1 axis in the regulation of neutrophil recruitment early after MI. We show that myocardial ADAM10 is distinctly upregulated in myocardial biopsies from patients with ischemia-driven cardiomyopathy. Intriguingly, upon MI in mice, pharmacological ADAM10 inhibition as well as genetic cardiomycyte-specific ADAM10 deletion improves survival with markedly enhanced heart function and reduced scar size. Mechanistically, abolished ADAM10-mediated CX3CL1 ectodomain shedding leads to diminished IL-1 beta-dependent inflammation, reduced neutrophil bone marrow egress as well as myocardial tissue infiltration. Thus, our data shows a conceptual insight into how acute MI induces chemotactic signaling via ectodomain shedding in cardiomyocytes.

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