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Academic Journal
Low‐Dose Colchicine Ameliorates Doxorubicin Cardiotoxicity Via Promoting Autolysosome Degradation
Ying Peng, Zhonggen Li, Jianchao Zhang, Yunshu Dong, Chenglin Zhang, Yiming Dong, Yafei Zhai, Honglin Zheng, Mengduan Liu, Jing Zhao, Wenting Du, Yangyang Liu, Liping Sun, Xiaowei Li, Hailong Tao, Deyong Long, Xiaoyan Zhao, Xin Du, Changsheng Ma, Yaohe Wang, Jianzeng Dong
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, Vol 13, Iss 9 (2024)
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| Title | Low‐Dose Colchicine Ameliorates Doxorubicin Cardiotoxicity Via Promoting Autolysosome Degradation |
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| Authors | Ying Peng, Zhonggen Li, Jianchao Zhang, Yunshu Dong, Chenglin Zhang, Yiming Dong, Yafei Zhai, Honglin Zheng, Mengduan Liu, Jing Zhao, Wenting Du, Yangyang Liu, Liping Sun, Xiaowei Li, Hailong Tao, Deyong Long, Xiaoyan Zhao, Xin Du, Changsheng Ma, Yaohe Wang, Jianzeng Dong |
| Publication Year |
2024
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| Source |
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, Vol 13, Iss 9 (2024)
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| Description |
Background The only clinically approved drug that reduces doxorubicin cardiotoxicity is dexrazoxane, but its application is limited due to the risk of secondary malignancies. So, exploring alternative effective molecules to attenuate its cardiotoxicity is crucial. Colchicine is a safe and well‐tolerated drug that helps reduce the production of reactive oxygen species. High doses of colchicine have been reported to block the fusion of autophagosomes and lysosomes in cancer cells. However, the impact of colchicine on the autophagy activity within cardiomyocytes remains inadequately elucidated. Recent studies have highlighted the beneficial effects of colchicine on patients with pericarditis, postprocedural atrial fibrillation, and coronary artery disease. It remains ambiguous how colchicine regulates autophagic flux in doxorubicin‐induced heart failure. Methods and Results Doxorubicin was administered to establish models of heart failure both in vivo and in vitro. Prior studies have reported that doxorubicin impeded the breakdown of autophagic vacuoles, resulting in damaged mitochondria and the accumulation of reactive oxygen species. Following the administration of a low dose of colchicine (0.1 mg/kg, daily), significant improvements were observed in heart function (left ventricular ejection fraction: doxorubicin group versus treatment group=43.75%±3.614% versus 57.07%±2.968%, P=0.0373). In terms of mechanism, a low dose of colchicine facilitated the degradation of autolysosomes, thereby mitigating doxorubicin‐induced cardiotoxicity. Conclusions Our research has shown that a low dose of colchicine is pivotal in restoring the autophagy activity, thereby attenuating the cardiotoxicity induced by doxorubicin. Consequently, colchicine emerges as a promising therapeutic candidate to improve doxorubicin cardiotoxicity.
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| Document Type |
article
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| Language |
English
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| Publisher Information |
Wiley, 2024.
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| Subject Terms | |
