Journal
EXPERT OPINION ON DRUG METABOLISM & TOXICOLOGY
Volume 15, Issue 9, Pages 767-774Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17425255.2019.1663169
Keywords
PI3K; AKT; mTOR inhibitor; toxicity; hyperglycemia; hyperlipidemia; pneumonitis; bone marrow suppression; hepatotoxicity; stomatitis
Funding
- National Natural Science Foundation of China [81673522, 81872941]
- Science Technology Plan Project of Zhejiang Province [2019C04010]
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Introduction: The phosphatidylinositide 3-kinase/AKT/mammalian target of rapamycin (PI3K/AKT/mTOR) signaling pathway has emerged as an important target in cancer therapy. Numerous PI3K/AKT/mTOR pathway inhibitors are extensively studied; some are used clinically, but most of these drugs are undergoing clinical trials. Potential adverse effects, such as severe hepatotoxicity and pneumonitis, have largely restricted the application and clinical significance of these inhibitors. A summary of mechanisms underlying the adverse effects is not only significant for the development of novel PI3K/AKT/mTOR inhibitors but also beneficial for the optimal use of existing drugs. Areas covered: We report a profile of the adverse effects, which we consider the class effects of PI3K/AKT/mTOR inhibitors. This review also discusses potential molecular toxicological mechanisms of these agents, which might drive future drug discovery. Expert opinion: Severe toxicities associated with PI3K/AKT/mTOR inhibitors hinder their approval and limit long-term clinical application of these drugs. A better understanding regarding PI3K/AKT/mTOR inhibitor-induced toxicities is needed. However, the mechanisms underlying these toxicities remain unclear. Future research should focus on developing strategies to reduce toxicities of approved inhibitors as well as accelerating new drug development. This review will be useful to clinical, pharmaceutical, and toxicological researchers.
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