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  • Title: Huaier extract enhances the treatment efficacy of imatinib in Ik6+ Ph+ acute lymphoblastic leukemia.
    Author: Qu P, Han J, Qiu Y, Yu H, Hao J, Jin R, Zhou F.
    Journal: Biomed Pharmacother; 2019 Sep; 117():109071. PubMed ID: 31202171.
    Abstract:
    Philadelphia chromosome-positive (Ph+) is considered as a high risk of acute lymphoblastic leukemia (ALL). Tyrosine kinase inhibitors (TKIs) are tailored drug for Ph+ ALL, but Ik6 is associated with TKI resistance and poor outcome of Ph+ ALL. In the present study, we investigated the potential benefit of combination therapy with imatinib and Huaier extract, a traditional Chinese medicine, in Ik6+ Ph+ ALL. The Ik6+ Ph+ -ALL cell lines Sup-B15 or BV173 were treated with Huaier extract, imatinib or the combination of the two. Analysis of cell proliferation showed that the combined treatment of imatinib and Huaier extract exhibited a greater effect on cell inhibition. Using flow cytometry and Western blot, enhanced effects on the induction of cell apoptosis were observed. The combination of the two drugs also exhibited a significant effect in decreasing the protein and enzymatic activity levels of BCR-ABL. The molecular mechanisms may be involved in BCR-ABL related pathways, including the inactivation of p-AKT, p-STAT5, p-mTOR and p-Lyn. Consistent with the in vitro results, the combination of Huaier extract and imatinib inhibit the growth and infiltration of xenografted tumors. Taken together, our findings show that Huaier extract enhances the anticancer efficacy of imatinib in Ik6+ Ph+ ALL Further, it also provides a potential clinical application in the treatment of refractory Ph+ ALL.
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