FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2022
Ceramide nanoliposomes augment the efficacy of venetoclax and cytarabine in models of acute myeloid leukemia.
СтатьяПоддержка NIH: внешняя программаПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Khokhlatchev Andrei V, Sharma Arati, Deering Tye G, Shaw Jeremy J P, Costa-Pinheiro Pedro, Golla Upendarrao, Annageldiyev Charyguly, Cabot Myles C, Conaway Mark R, Tan Su-Fern, Ung Johnson, Feith David J, Loughran Thomas P, Claxton David F, Fox Todd E, Kester Mark
Аннотация
Despite several new therapeutic options for acute myeloid leukemia (AML), disease relapse remains a significant challenge. We have previously demonstrated that augmenting ceramides can counter various drug-resistance mechanisms, leading to enhanced cell death in cancer cells and extended survival in animal models. Using a nanoscale delivery system for ceramide (ceramide nanoliposomes, CNL), we investigated the effect of CNL within a standard of care venetoclax/cytarabine (Ara-C) regimen. We demonstrate that CNL augmented the efficacy of venetoclax/cytarabine in in vitro, ex vivo, and in vivo models of AML. CNL treatment induced non-apoptotic cytotoxicity, and augmented cell death induced by Ara-C and venetoclax. Mechanistically, CNL reduced both venetoclax (Mcl-1) and cytarabine (Chk1) drug-resistant signaling pathways. Moreover, venetoclax and Ara-C augmented the generation of endogenous pro-death ceramide species, which was intensified with CNL. Taken together, CNL has the potential to be utilized as an adjuvant therapy to improve outcomes, potentially extending survival, in patients with AML.