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首页> 外文期刊>Journal of Cellular Physiology >Nucleolin protects against doxorubicin‐induced cardiotoxicity via upregulating microRNA‐21
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Nucleolin protects against doxorubicin‐induced cardiotoxicity via upregulating microRNA‐21

机译:Nucleolin防止阿霉素诱导通过移植心脏中毒microRNA 21

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摘要

Nucleolin is a multifunctional protein and participates in many important biological processes. Our previous study found that nucleolin protects the heart against myocardial ischemia–reperfusion injury. In this study, we aimed to investigate the role of nucleolin in doxorubicin (DOX)‐induced cardiotoxicity. The expression pattern of nucleolin in hearts subjected to?DOX injury was investigated, and we found that administration of DOX induced nucleolin expression significantly in vivo and in vitro. Gene transfection and RNA interference approaches were used in cardiomyocytes to investigate the function of nucleolin. Nucleolin overexpression protects cardiomyocytes against DOX‐induced injury. Nucleolin‐ablated cardiomyocytes become susceptible to the injury induced by DOX. The hearts of cardiac‐myocyte‐specific nucleolin transgenic mice are more resistant to DOX injury. Furthermore, nucleolin upregulates microRNA(miRNA)‐21 expression in vivo and in vitro, and the miRNA‐21 inhibitor negates the protective effect of nucleolin against injury induced by DOX. These results have demonstrated that nucleolin is involved in the regulation of DOX‐induced cardiac injury and dysfunction via the regulation of miRNA‐21 expression, and may be a novel therapeutic target for DOX‐induced cardiotoxicity.
机译:Nucleolin是一种多功能蛋白参与许多重要的生物流程。nucleolin保护心脏的心肌缺血再灌注损伤。旨在调查nucleolin的作用阿霉素(阿霉素)诱导毒性。表达模式的nucleolin的心接受吗?发现政府的强力霉素诱导nucleolin体内外表达显著体外。方法被用于心肌细胞调查nucleolin的功能。过度保护心肌细胞对阿霉素诱导损伤。心肌细胞变得容易受到伤害由阿霉素诱导。地理地理心脏肌细胞nucleolin转基因老鼠更耐阿霉素受伤。此外,nucleolin上调微rna (microRNA) 21体内外表达体外,microrna 21抑制剂否定nucleolin反对伤害的保护作用由阿霉素诱导。nucleolin参与的规定阿霉素诱导心肌损伤和功能障碍microrna的规定应承担的21个表达式,和可能阿霉素诱导应承担的新颖的治疗目标毒性。

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