The lncRNA CASC15 regulates SOX4 expression in RUNX1-rearranged acute leukemia.
The lncRNA CASC15 regulates SOX4 expression in RUNX1-rearranged acute leukemia.
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DOI:
10.1186/s12943-017-0692-x
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发表时间:
2017-07-19
期刊:
影响因子:
37.3
通讯作者:
Rao DS
中科院分区:
文献类型:
--
作者:
Fernando TR;Contreras JR;Zampini M;Rodriguez-Malave NI;Alberti MO;Anguiano J;Tran TM;Palanichamy JK;Gajeton J;Ung NM;Aros CJ;Waters EV;Casero D;Basso G;Pigazzi M;Rao DS
Long non-coding RNAs (lncRNAs) play a variety of cellular roles, including regulation of transcription and translation, leading to alterations in gene expression. Some lncRNAs modulate the expression of chromosomally adjacent genes. Here, we assess the roles of the lncRNA CASC15 in regulation of a chromosomally nearby gene, SOX4, and its function in RUNX1/AML translocated leukemia. CASC15 is a conserved lncRNA that was upregulated in pediatric B-acute lymphoblastic leukemia (B-ALL) with t (12; 21) as well as pediatric acute myeloid leukemia (AML) with t (8; 21), both of which are associated with relatively better prognosis. Enforced expression of CASC15 led to a myeloid bias in development, and overall, decreased engraftment and colony formation. At the cellular level, CASC15 regulated cellular survival, proliferation, and the expression of its chromosomally adjacent gene, SOX4. Differentially regulated genes following CASC15 knockdown were enriched for predicted transcriptional targets of the Yin and Yang-1 (YY1) transcription factor. Interestingly, we found that CASC15 enhances YY1-mediated regulation of the SOX4 promoter. Our findings represent the first characterization of this CASC15 in RUNX1-translocated leukemia, and point towards a mechanistic basis for its action. The online version of this article (doi:10.1186/s12943-017-0692-x) contains supplementary material, which is available to authorized users.
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