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MicroRNAs as Biomarkers and Therapeutic Targets in Doxorubicin-Induced Cardiomyopathy: A Review

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出版社

FRONTIERS MEDIA SA
DOI: 10.3389/fcvm.2021.740515

关键词

doxorubicin; microRNAs; cardiotoxicity; biomarkers; treatment strategy

资金

  1. Hangzhou Medical and Health Technology Project [Z20200135]

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Doxorubicin-induced cardiomyopathy (DIC) is a cumulative dose-dependent cardiac toxicity disease, where miRNAs may participate in the pathological process by inducing oxidative stress and apoptosis. Research on the roles of miRNAs in DIC could lead to the discovery of diagnostic biomarkers and potential therapeutic targets.
Doxorubicin is a broad-spectrum chemotherapy drug applied in antitumor therapy. However, its clinical utility is limited by its fatal cardiotoxicity. Doxorubicin (DOX)-induced cardiomyopathy (DIC) begins with the first DOX dose and is characterized by being cumulative dose-dependent, and its early diagnosis using common detection methods is very difficult. Therefore, it is urgent to determine the underlying mechanism of DIC to construct treatment strategies for the early intervention before irreversible damage to the myocardium occurs. Growing evidence suggests that microRNAs (miRNAs) play regulatory roles in the cardiovascular system. miRNAs may be involved in DIC by acting through multiple pathways to induce cardiomyocyte injury. Recent studies have shown that the dysregulation of miRNA expression can aggravate the pathological process of DIC, including the induction of oxidative stress, apoptosis, ion channel dysfunction and microvascular dysfunction. Current findings on the roles of miRNAs in DIC have led to a wide range of studies exploring candidate miRNAs to be utilized as diagnostic biomarkers and potential therapeutic targets for DIC. In this review, we discuss frontier studies on the roles of miRNAs in DIC to better understand their functions, develop relevant applications in DIC, discuss possible reasons for the limitations of their use and speculate on innovative treatment strategies.

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