期刊
JOURNAL OF CELL SCIENCE
卷 132, 期 10, 页码 -出版社
COMPANY BIOLOGISTS LTD
DOI: 10.1242/jcs.228478
关键词
Dkk1; Doxorubicin; Cardiomyopathy; Apoptosis; Mitochondria; Wnt/beta-catenin
类别
资金
- National Natural Science Foundation of China [81803521, 81872860, 81673433]
- Indigenous Innovative Research Team of Guangdong Province [2017BT01Y093]
- National Major Special Projects for the Creation and Manufacture of New Drugs [2018ZX09301031-001]
- Special Program for Applied Science and Technology of Guangdong Province [2015B020232009]
- National Engineering and Technology Research Center for New Drug Druggability Evaluation (Seed Program of Guangdong Province) [2017B090903004]
- Guangzhou Science and Technology Program Project [201604020121]
- Medical Scientific Research Foundation of Guangdong Province [A2018078]
- Traditional Chinese Medicine Bureau of Guangdong Province [20191060]
- Natural Science Foundation of Guangdong Province [2017A030310542]
The cancer clinical therapy of doxorubicin (Dox) treatment is limited by its life-threatening cardiotoxic effects. Dickkopf-1 (Dkk1), the founding and best-studied member of the Dkk family, functions as an antagonist of canonical Wnt/beta-catenin. Dkk1 is considered to play a broad role in a variety of biological processes, but its effects on Dox-induced cardiomyopathy are poorly understood. Here, we found that the level of Dkk1 was significantly increased in Dox-treated groups, and this increase exacerbated Dox-induced cardiomyocyte apoptosis and mitochondrial dysfunction. Overexpressing Dkk1 aggravated Dox-induced cardiotoxicity in H9C2 cells. Similar results were detected when adding active Dkk1 protein extracellulariy. Conversely, adding specific antibody blocking extracellular Dkk1 attenuated the cardiotoxic response to Dox. Adenovirus encoding Dkk1 was transduced through intramyocardial injection and exacerbated Dox-induced cardiomyocyte apoptosis, mitochondrial damage and heart injury in vivo. Furthermore, Wnt/beta-catenin signaling was inhibited during Dox-induced cardiotoxicity, and the re-activation of beta-catenin prevented the effect of overexpressed Dkk1 and Dox-induced cardiotoxicity. In conclusion, these results reveal the crucial role of the Dkk1-Wnt/beta-catenin signaling axis in the process of Dox-induced cardiotoxicity and provide novel insights into the potential mechanism of cardiomyopathy caused by clinical application of Dox.
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