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β-Catenin is a key regulator of leukemia stem cell maintenance and drug resistance. Herein, we investigated the protective effects of the stromal cell-mediated VE-cadherin-β-catenin signal on Ph+ leukemia cells during imatinib treatment. We found stromal cells could desensitize imatinib and up-regulate VE-cadherin expression on Ph+ leukemia cells (K562 and SUP-B15 cells), which further stabilized...
KIT mutation has been implicated in sporadic mastocytosis, yet clusters in only a few sites in the molecule. For those malignancies associated with KIT mutation or over-expression, imatinib offers a specific therapeutic option, yet it has no effect on D816V mutation commonly seen in sporadic mastocytosis. The majority of cases of familial mastocytosis seem to lack KIT mutation. We report a kindred...
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