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Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Front+Cell+Dev+Biol 2021 ; 9 (ä): 760035 Nephropedia Template TP
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Sacubitril Ameliorates Cardiac Fibrosis Through Inhibiting TRPM7 Channel #MMPMID34778271
Jia T; Wang X; Tang Y; Yu W; Li C; Cui S; Zhu J; Meng W; Wang C; Wang Q
Front Cell Dev Biol 2021[]; 9 (ä): 760035 PMID34778271show ga
Heart failure caused by cardiac fibrosis has become a major challenge of public health worldwide. Cardiomyocyte programmed cell death (PCD) and activation of fibroblasts are crucial pathological features, both of which are associated with aberrant Ca(2+) influx. Transient receptor potential cation channel subfamily M member 7 (TRPM7), the major Ca(2+) permeable channel, plays a regulatory role in cardiac fibrosis. In this study, we sought to explore the mechanistic details for sacubitril, a component of sacubitril/valsartan, in treating cardiac fibrosis. We demonstrated that sacubitril/valsartan could effectively ameliorate cardiac dysfunction and reduce cardiac fibrosis induced by isoprotereno (ISO) in vivo. We further investigated the anti-fibrotic effect of sacubitril in fibroblasts. LBQ657, the metabolite of sacubitril, could significantly attenuate transforming growth factor-beta 1 (TGF-beta1) induced cardiac fibrosis by blocking TRPM7 channel, rather than suppressing its protein expression. In addition, LBQ657 reduced hypoxia-induced cardiomyocyte PCD via suppression of Ca(2+) influx regulated by TRPM7. These findings suggested that sacubitril ameliorated cardiac fibrosis by acting on both fibroblasts and cardiomyocytes through inhibiting TRPM7 channel.