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Background

Heart failure (HF) after myocardial infarction (MI) is a prevalent disease with a poor prognosis. Relieving pathological cardiac remodeling and preserving cardiac function is a critical link in the treatment of post-MI HF. Thus, more new therapeutic targets are urgently needed. The expression of ADAM17 is increased in patients with acute MI, but its functional role in post-MI HF remains unclear.

Methods

To address this question, we examined the effects of ADAM17 on the severity and prognosis of HF within 1 year of MI in 152 MI patients with or without HF. In mechanistic studies, the effects of ADAM17 on ventricular remodeling and systolic function were extensively assessed at the tissue and cellular levels by establishing animal model of post-MI HF and in vitro hypoxic cell model.

Results

High levels of ADAM17 predicted a higher incidence of post-MI HF, poorer cardiac function and higher mortality. Animal studies demonstrated that ADAM17 promoted the occurrence of post-MI HF, as indicated by increased infarct size, cardiomyocyte hypertrophy, myocardial interstitial collagen deposition and cardiac failure. ADAM17 knock down significantly improved pathological cardiac remodeling and cardiac function in mice with MI. Mechanistically, activated ADAM17 inhibited the cardioprotective effects of ACE2 by promoting hydrolytic shedding of the transmembrane protein ACE2 in cardiomyocytes, which subsequently mediated the occurrence of cardiac remodeling and the progression of heart failure. Moreover, the activation of ADAM17 in hypoxic cardiomyocytes was dependent on p38 MAPK phosphorylation at threonine 735.

Conclusions

These data highlight a novel and important mechanism for ADAM17 to cause post-MI HF, which will hopefully be a new potential target for early prediction or intervention of post-MI HF. Video abstract."xsd:string
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http://purl.uniprot.org/citations/37046278http://purl.uniprot.org/core/author"Li S."xsd:string
http://purl.uniprot.org/citations/37046278http://purl.uniprot.org/core/author"Li Y."xsd:string
http://purl.uniprot.org/citations/37046278http://purl.uniprot.org/core/author"Zhang Y."xsd:string
http://purl.uniprot.org/citations/37046278http://purl.uniprot.org/core/author"Zhao B."xsd:string
http://purl.uniprot.org/citations/37046278http://purl.uniprot.org/core/author"Zhang Y.'"xsd:string
http://purl.uniprot.org/citations/37046278http://purl.uniprot.org/core/author"Fang S."xsd:string
http://purl.uniprot.org/citations/37046278http://purl.uniprot.org/core/author"Bie B."xsd:string
http://purl.uniprot.org/citations/37046278http://purl.uniprot.org/core/date"2023"xsd:gYear
http://purl.uniprot.org/citations/37046278http://purl.uniprot.org/core/name"Cell Commun Signal"xsd:string
http://purl.uniprot.org/citations/37046278http://purl.uniprot.org/core/pages"73"xsd:string
http://purl.uniprot.org/citations/37046278http://purl.uniprot.org/core/title"P38 MAPK activated ADAM17 mediates ACE2 shedding and promotes cardiac remodeling and heart failure after myocardial infarction."xsd:string
http://purl.uniprot.org/citations/37046278http://purl.uniprot.org/core/volume"21"xsd:string
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