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Article Open Access

NLS‑RARα modulates acute promyelocytic leukemia NB4 cell proliferation and differentiation via the PI3K/AKT pathway

  • Authors:
    • Hao Song
    • Liu Li
    • Liang Zhong
    • Rong Yang
    • Kailing Jiang
    • Xiaoqun Yang
    • Beizhong Liu
  • View Affiliations / Copyright

    Affiliations: Central Laboratory of Yong‑Chuan Hospital, Chongqing Medical University, Chongqing 402160, P.R. China, Department of Laboratory Medicine, The Key Laboratory of Diagnostics Medicine Designated by The Ministry of Education, Chongqing Medical University, Chongqing 400016, P.R. China
    Copyright: © Song et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 5495-5500
    |
    Published online on: November 8, 2016
       https://doi.org/10.3892/mmr.2016.5932
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Abstract

In patients with acute promyelocytic leukemia (APL), ~98% express the promyelocytic leukemia (PML)‑retinoic acid receptor α (RARα) fusion protein. Previous studies have shown that, in primary leukemia cells of patients with APL, the cleavage of PML‑RARα by neutrophil elastase is important for its ability to initiate APL. This cleavage separates the nuclear localization signal (NLS) from PML, leading to the formation of a novel protein, NLS‑RARα, although its underlying mechanism in APL remains to be fully elucidated. In the present study, the role of NLS‑RARα on the proliferation and differentiation of APL NB4 cells was investigated. Lentiviral vectors were constructed and transfected NLS‑RARα in NB4 cells, puromycin was used to select the stable transfected cell lines. Cell Counting Kit‑8 and flow cytometry analysis revealed that the efficient overexpression of NLS‑RARα significantly promoted NB4 cell proliferation and inhibited all‑trans retinoic acid‑induced cell differentiation. Furthermore, the NLS‑RARα protein promoted a significant increase in AKT and glycogen synthase kinase 3β (GSK‑3β) phosphorylation. The protein levels of phosphorylated (p) AKT and pGSK‑3β were decreased following pretreatment with the phosphatidylinositol 3‑kinase (PI3K) inhibitor, LY294002. These findings suggested that NLS‑RARα was an important molecule associated with the occurrence of APL via the PI3K‑AKT signaling pathway, and indicated that the NLS‑RARα protein may be a novel target for the treatment of APL.
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Copy and paste a formatted citation
Spandidos Publications style
Song H, Li L, Zhong L, Yang R, Jiang K, Yang X and Liu B: NLS‑RARα modulates acute promyelocytic leukemia NB4 cell proliferation and differentiation via the PI3K/AKT pathway. Mol Med Rep 14: 5495-5500, 2016.
APA
Song, H., Li, L., Zhong, L., Yang, R., Jiang, K., Yang, X., & Liu, B. (2016). NLS‑RARα modulates acute promyelocytic leukemia NB4 cell proliferation and differentiation via the PI3K/AKT pathway. Molecular Medicine Reports, 14, 5495-5500. https://doi.org/10.3892/mmr.2016.5932
MLA
Song, H., Li, L., Zhong, L., Yang, R., Jiang, K., Yang, X., Liu, B."NLS‑RARα modulates acute promyelocytic leukemia NB4 cell proliferation and differentiation via the PI3K/AKT pathway". Molecular Medicine Reports 14.6 (2016): 5495-5500.
Chicago
Song, H., Li, L., Zhong, L., Yang, R., Jiang, K., Yang, X., Liu, B."NLS‑RARα modulates acute promyelocytic leukemia NB4 cell proliferation and differentiation via the PI3K/AKT pathway". Molecular Medicine Reports 14, no. 6 (2016): 5495-5500. https://doi.org/10.3892/mmr.2016.5932
Copy and paste a formatted citation
x
Spandidos Publications style
Song H, Li L, Zhong L, Yang R, Jiang K, Yang X and Liu B: NLS‑RARα modulates acute promyelocytic leukemia NB4 cell proliferation and differentiation via the PI3K/AKT pathway. Mol Med Rep 14: 5495-5500, 2016.
APA
Song, H., Li, L., Zhong, L., Yang, R., Jiang, K., Yang, X., & Liu, B. (2016). NLS‑RARα modulates acute promyelocytic leukemia NB4 cell proliferation and differentiation via the PI3K/AKT pathway. Molecular Medicine Reports, 14, 5495-5500. https://doi.org/10.3892/mmr.2016.5932
MLA
Song, H., Li, L., Zhong, L., Yang, R., Jiang, K., Yang, X., Liu, B."NLS‑RARα modulates acute promyelocytic leukemia NB4 cell proliferation and differentiation via the PI3K/AKT pathway". Molecular Medicine Reports 14.6 (2016): 5495-5500.
Chicago
Song, H., Li, L., Zhong, L., Yang, R., Jiang, K., Yang, X., Liu, B."NLS‑RARα modulates acute promyelocytic leukemia NB4 cell proliferation and differentiation via the PI3K/AKT pathway". Molecular Medicine Reports 14, no. 6 (2016): 5495-5500. https://doi.org/10.3892/mmr.2016.5932
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