Key result
Programmed cell death mechanisms drive doxorubicin cardiotoxicity, highlighting multiple therapeutic targets.
Why the study?
The clinical utility of doxorubicin is limited by cardiotoxicity, and a comprehensive understanding of programmed cell death and specific signaling pathways may inform therapeutic strategies.
Understanding the specific molecular pathways of programmed cell death and mitochondrial dysfunction involved in doxorubicin-induced cardiotoxicity provides insights for developing targeted cardioprotective therapies.
No immediate practice change for doxorubicin cardiotoxicity; leaves open targeted trials of cell death pathway inhibitors.
Doxorubicin (DOX) is the most commonly used anthracycline anticancer agent, while its clinical utility is limited by harmful side effects like cardiotoxicity. Numerous studies have elucidated that programmed cell death plays a significant role in DOX-induced cardiotoxicity (DIC). This review summarizes several kinds of programmed cell death, including apoptosis, pyroptosis, necroptosis, autophagy, and ferroptosis. Furthermore, oxidative stress, inflammation, and mitochondrial dysfunction are also important factors in the molecular mechanisms of DIC. Besides, a comprehensive understanding of specific signal pathways of DIC can be helpful to its treatment. Therefore, the related signal pathways are elucidated in this review, including sirtuin deacetylase (silent information regulator 2 [Sir2]) 1 (SIRT1)/nuclear factor erythroid 2-related factor 2, SIRT1/Klotho, SIRT1/Recombinant Sestrin 2, adenosine monophosphate-activated protein kinase, AKT, and peroxisome proliferator-activated receptor. Heat shock proteins function as chaperones, which play an important role in various stressful situations, especially in the heart. Thus, some of heat shock proteins involved in DIC are also included. Hence, the last part of this review focuses on the therapeutic research based on the mechanisms above.
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Li et al. (2024) conducted a review in Doxorubicin-induced cardiotoxicity. Doxorubicin was evaluated. Doxorubicin-induced cardiotoxicity is driven by programmed cell death mechanisms including apoptosis, pyroptosis, necroptosis, autophagy, and ferroptosis, presenting numerous potential therapeutic targets.
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