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Dihydroartemisinin Enhances the Therapeutic Efficacy of Bh3 Mimetic Inhibitor in Acute Lymphoblastic Leukemia Cells Via Inhibition of Mcl-1 Publisher Pubmed



Nazmabadi R1 ; Pooladi M2 ; Amri J3 ; Abbasi Y1 ; Karami H4, 5 ; Darvish M4
Authors

Source: Asian Pacific Journal of Cancer Prevention Published:2024


Abstract

Introduction: Up-regulation of the anti-apoptotic proteins such as Mcl-1 is associated with the primary and secondary resistance of tumor cells to ABT-737 Bcl-2 inhibitor. The combined treatment of Bcl-2 inhibitors with Mcl-1 inhibitors has been proposed as an attractive therapeutic strategy to overcome this drug resistance. Here, we investigated the effect of dihydroartemisinin on Mcl-1 expression and sensitization of T-ALL cells to ABT-737. Methods: The cell growth and survival were tested by the cell proliferation and MTT assays, respectively. The mRNA levels of Bcl-2, Mcl-1, Bax and P21 were examined by qRT-PCR. Apoptosis were detected by Hoechst 33342 staining and caspase-3 activity assay. Results: Our data showed that combination treatment with dihydroartemisinin and ABT-737 caused a significant decrease in the IC50 value and synergistically reduced the cell survival compared with dihydroartemisinin or ABT-737 alone. ABT-737 enhanced the Mcl-1 mRNA expression. Dihydroartemisinin also down-regulated the expression of Bcl-2 and Mcl-1 and enhanced the P21 and Bax expression. Moreover, dihydroartemisinin enhanced the apoptosis induced by ABT-737 in MOLT-4 and MOLT-17 cell lines. Conclusion: In conclusion, dihydroartemisinin demonstrates anti-tumor activities in human ALL cells via inhibition of cell survival and growth. Dihydroartemisinin augments the apoptotic effect of ABT-737 by inhibiting the expression of Mcl-1. © (2024), (Asian Pacific Organization for Cancer Prevention). All Rights Reserved.
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