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- W2912604473 abstract "Abstract Background Over one million Americans experience myocardial infarction (MI) every year, and the resulting scar and subsequent cardiac fibrosis contribute to heart failure and death. A specialized cell-cell adhesion protein, cadherin-11 (CDH11), contributes to inflammation and fibrosis in rheumatoid arthritis, pulmonary fibrosis, and aortic valve calcification but has not yet been studied in the context of cardiac remodeling after MI. We hypothesized that targeting CDH11 function after MI would reduce inflammation-driven fibrotic remodeling and infarct expansion to improve functional outcomes in mice. Methods MI was induced by ligation of the left anterior descending artery in transgenic mice with reduced or ablated CDH11, wild type mice receiving bone marrow transplants from Cdh11 transgenic animals, and wild type mice treated with a functional blocking antibody against CDH11 (SYN0012). Cardiac function was measured by echocardiography, expression of cell populations was quantified by flow cytometry, and tissue remodeling by altered histological assessment and transcription of inflammatory and pro-angiogenic genes by qPCR. Co-culture was used to assess interactions between cardiac fibroblasts and macrophages. Results MI increased transcription of Cdh11 in non-cardiomyocyte cells. Mice with deletion of Cdh11 and wild type mice receiving bone marrow transplants from Cdh11 transgenic animals had improved cardiac function and dimensions after MI. Animals given SYN0012 had improved cardiac function, reduced tissue remodeling, and altered transcription of inflammatory and proangiogenic genes. Targeting CDH11 also reduced the number of bone marrow-derived myeloid cells and increased pro-angiogenic cells in the heart three days after MI, consistent with a decrease in transcription and expression of IL-6 in the infarct region. Cardiac fibroblast and macrophage interactions led to an increase in IL-6 secretion that was reduced with SYN0012 treatment in vitro. Conclusions Our findings suggest that CDH11-expressing cells contribute to inflammation-driven fibrotic remodeling after MI, and that targeting CDH11 with a blocking antibody improves cardiac function after MI. This improvement is likely mediated by altered recruitment of bone marrow-derived cells, thereby limiting the macrophage-induced expression of IL-6 by fibroblasts and promoting vascularization." @default.
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- W2912604473 date "2019-01-29" @default.
- W2912604473 modified "2023-09-24" @default.
- W2912604473 title "CADHERIN-11 BLOCKADE REDUCES INFLAMMATION-DRIVEN FIBROTIC REMODELING AND IMPROVES OUTCOMES AFTER MYOCARDIAL INFARCTION" @default.
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- W2912604473 doi "https://doi.org/10.1101/533000" @default.
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