Pharmaceutical compositions and methods for countering chemotherapy induced cardiotoxicity

Abstract

This disclosure provides methods and pharmaceutical compositions for reducing or eliminating cardiotoxicity, particularly cardiotoxicity induced by a cancer treatment or other therapy. In some cases, the methods and compositions prevent or reduce cardiotoxicity caused by anthracycline treatment. The methods provided herein often comprise administering a protective agent such as myricetin, tricetin, robinetin, ficetin, vitexin, quercetin, dihydrorobinetin, kaempferol, 7,3′,4′,5′-tetrahydroxyflavone, and myricitrin in conjunction with the administration of a cancer drug or other treatment. They may comprise administering a protective agent in combination with dexrazoxane. The compositions provided herein include co-formulations of a protective agent with a different protective agent or with a cancer treatment (e.g., anthracycline drug).

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the priority of U.S. provisional application Ser. No. 62 / 291,480, filed Feb. 4, 2016, and U.S. provisional application Ser. No. 62 / 348,102, filed Jun. 9, 2016, each of which is hereby incorporated by reference herein in its entirety for all purposes.BACKGROUND[0002]Cardiotoxicity and congestive heart failure are serious side-effects of oncological therapies, most prominently those comprising anthracyclines, which are administered to greater than one million cancer patients per year and half of all childhood cancer patients. Adverse cardiac side effects are also observed in patients treated with protein kinase inhibitors and antibody-based biologics that target protein kinase. Certain reductions in heart failure rates have been achieved by capping the maximal doses of anthracyclines and by changing their administration schedules, all of which severely limits the therapeutic potentials of these anticancer agents. The...

AI Technical Summary

Benefits of technology

This patent provides pharmaceutical compositions and methods for protecting the heart and preventing heart failure in patients treated with anthracyclines, protein kinase inhibitors, and biologic agents. By minimizing the risk of heart failure, conventional cancer treatment can achieve improved efficacy and safety. The patent also describes methods for administering the protective agents to prevent, reduce, or eliminate cardiotoxicity or heart failure induced by chemotherapy drugs or biologic agents. The protective agents can include compounds like myricetin, vitexin, robinetin, tricetin, ficetin, and others. The invention may help mitigate the risk of cardiotoxicity and heart failure in patients with cancer.

Problems solved by technology

Certain reductions in heart failure rates have been achieved by capping the maximal doses of anthracyclines and by changing their administration schedules, all of which severely limits the therapeutic potentials of these anticancer agents.

A common side effect of anthracycline use is associated with cardiotoxicity, which is dose dependent and may also result from cumulative exposures.

The reactive oxygen species (ROS) may activate apoptotic pathways, leading to cell death in both cancer and normal cells.

Some protein kinase inhibitors-including small molecule and biologic inhibitors may also cause cardiotoxicity.

Several monoclonal antibodies target receptor protein kinases that play an important role in heart function and thus may cause cardiotoxicity as a result.

DEX is not approved for use in children and adolescents, it is particularly disheartening to find reports of high incidences of heart failure in anthracycline-treated young children in their later life of post-cancer.

Further, the limited indication approval and use are also testament of DEX's shortcomings, which include interfering with antitumor efficacy of anthracyclines, inducing secondary malignancies, and causing blood and bone marrow disorders.

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