Abstract:
:Drug resistance is one of the leading causes of failed cancer therapy in the treatment of acute myeloid leukemia. Although the mechanisms of resistance are poorly understood, they may be related to the presence of leukemia stem cells (LSCs). Down-regulation of the miR-203 reportedly contributes to oncogenesis and chemo-resistance in multiple cancers. We found that miR-203 expression was down-regulated in CD34 + AML cells as compared with CD34- cells isolated from patients as well as in LSC-enriched (CD34 + CD38-) cell lines KG-1a or MOLM13. Additionally, re-expression of miR-203 led to decreased cell proliferation, self-renewal, and sphere formation in LSCs. Moreover, miR-203 was found to directly target the 3'un-translated regions of survivin and Bmi-1 mRNAs affecting proliferation and self-renewal in LSCs. In this study, we identified a novel miR-203/survivin/Bmi-1 axis involved in the regulation of biological properties of LSCs. This axis may represent a new therapeutic target for acute myeloid leukemia and a potential prognosis/diagnostic marker for LSCs therapy.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Zhang Y,Zhou SY,Yan HZ,Xu DD,Chen HX,Wang XY,Wang X,Liu YT,Zhang L,Wang S,Zhou PJ,Fu WY,Ruan BB,Ma DL,Wang Y,Liu QY,Ren Z,Liu Z,Zhang R,Wang YFdoi
10.1038/srep19995subject
Has Abstractpub_date
2016-02-05 00:00:00pages
19995issn
2045-2322pii
srep19995journal_volume
6pub_type
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