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Oncogenic Heterogeneous Nuclear Ribonucleoprotein D-like Modulates the Growth and Imatinib Response of Human Chronic Myeloid Leukemia CD34 Cells Via Pre-B-cell Leukemia Homeobox 1

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Journal Oncogene
Date 2019 Sep 7
PMID 31488872
Citations 6
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Abstract

Chronic myeloid leukemia (CML) originates from normal hematopoietic stem cells acquiring BCR-ABL fusion gene, specific BCR-ABL inhibitors (e.g., imatinib mesylate, IM) have greatly improved patient management. However, some patients are still suffering from relapse and drug resistance, which urges better understanding of the growth/survival mechanisms of CML stem/progenitor cells. In the present study, the role and its underlying mechanism of heterogeneous nuclear ribonucleoprotein D-like (HNRPDL) in CML cells were investigated. Firstly, overexpression of HNRPDL promoted the growth of murine BaF3 cells in vitro and induced leukemia in vivo, which was enhanced by co-expression of BCR-ABL. Conversely, HNRPDL silencing inhibited colony-forming cell (CFC) production of CML CD34 cells and attenuated BCR-ABL induced leukemia. In addition, HNRPDL modulated imatinib response of K562 cells and HNRPDL silencing sensitized CML CD34 cells to imatinib treatment. Mechanistically, we found the stability of pre-B-cell leukemia homeobox 1 (PBX1) mRNA was sustained by HNRPDL through its binding to a specific motif (ACUAGC) in 3'-untranslated region (3'-UTR) of PBX1. The expression of PBX1 was significantly higher in CML CD34 cells than that in control cells and PBX silencing inhibited the growth of CML cells and sensitized them to imatinib treatment. In contrast, overexpression of PBX1 elevated the CFC production of normal hematopoietic CD34 cells and "rescued" HNRPDL silencing induced growth inhibition and imatinib sensitization. Taken together, our data have demonstrated that HNRPDL transforms hematopoietic cells and a novel HNRPDL/PBX1 axis plays an important role in human CML CD34 cells.

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References
1.
Dreyfuss G, Matunis M, Pinol-Roma S, Burd C . hnRNP proteins and the biogenesis of mRNA. Annu Rev Biochem. 1993; 62:289-321. DOI: 10.1146/annurev.bi.62.070193.001445. View

2.
Geuens T, Bouhy D, Timmerman V . The hnRNP family: insights into their role in health and disease. Hum Genet. 2016; 135(8):851-67. PMC: 4947485. DOI: 10.1007/s00439-016-1683-5. View

3.
Wang Y, Xiao X, Zhang J, Choudhury R, Robertson A, Li K . A complex network of factors with overlapping affinities represses splicing through intronic elements. Nat Struct Mol Biol. 2012; 20(1):36-45. PMC: 3537874. DOI: 10.1038/nsmb.2459. View

4.
Doi A, Shiosaka T, Takaoka Y, Yanagisawa K, Fujita S . Molecular cloning of the cDNA encoding A + U-rich element RNA binding factor. Biochim Biophys Acta. 1998; 1396(1):51-6. DOI: 10.1016/s0167-4781(97)00223-6. View

5.
Tsuchiya N, Kamei D, Takano A, Matsui T, Yamada M . Cloning and characterization of a cDNA encoding a novel heterogeneous nuclear ribonucleoprotein-like protein and its expression in myeloid leukemia cells. J Biochem. 1998; 123(3):499-507. DOI: 10.1093/oxfordjournals.jbchem.a021964. View