Decreased expression of the augmenter of liver regeneration results in growth inhibition and increased chemosensitivity of acute T lymphoblastic leukemia cells

  • Authors:
    • Yan Shen
    • Qi Liu
    • Shifeng Lou
    • Yun Luo
    • Hang Sun
    • Hanqing Zeng
    • Jianchuan Deng
  • View Affiliations

  • Published online on: September 21, 2017     https://doi.org/10.3892/or.2017.5984
  • Pages: 3130-3136
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Abstract

Augmenter of liver regeneration (ALR) plays crucial roles in cell survival and growth. Previous studies have demonstrated that ALR exerts a protective effect on toxic agent‑induced cell death in acute T lymphoblastic leukemia cells and ALR knockdown can sensitize cancer cells to radiation. However, the biological functions of ALR against drug resistance in T-cell acute lymphoblastic leukemia are mostly unknown. In the present study, we investigated the effect of small interfering RNA (siRNA)-induced ALR silencing on cell proliferation and sensitivity to vincristine (VCR) of Jurkat cells. We found that ALR siRNA effectively decreased the ALR expression, then inhibited cell growth and increased sensitivity to VCR in Jurkat cells. Flow cytometry assay revealed that the downregulation of ALR expression promoted cell apoptosis and regulated cell cycle distribution. Following incubation with VCR, apoptosis-related proteins, such as pro-PARP, pro-caspase 8, pro-caspase 3 and Bcl-2 were downregulated in the siRNA/ALR group. Pretreatment with siRNA/ALR in combination with VCR resulted in prolonged G2/M arrest, accompanied by downregulation of cdc25c and cdc2 expression and dissociation of cyclin B1. In conclusion, the results of this study demonstrated that targeted inhibition of the ALR expression in Jurkat cells triggered cell growth inhibition and sensitized cells to VCR via promoting apoptosis and regulating the cell cycle.
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November-2017
Volume 38 Issue 5

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Shen Y, Liu Q, Lou S, Luo Y, Sun H, Zeng H and Deng J: Decreased expression of the augmenter of liver regeneration results in growth inhibition and increased chemosensitivity of acute T lymphoblastic leukemia cells. Oncol Rep 38: 3130-3136, 2017.
APA
Shen, Y., Liu, Q., Lou, S., Luo, Y., Sun, H., Zeng, H., & Deng, J. (2017). Decreased expression of the augmenter of liver regeneration results in growth inhibition and increased chemosensitivity of acute T lymphoblastic leukemia cells. Oncology Reports, 38, 3130-3136. https://doi.org/10.3892/or.2017.5984
MLA
Shen, Y., Liu, Q., Lou, S., Luo, Y., Sun, H., Zeng, H., Deng, J."Decreased expression of the augmenter of liver regeneration results in growth inhibition and increased chemosensitivity of acute T lymphoblastic leukemia cells". Oncology Reports 38.5 (2017): 3130-3136.
Chicago
Shen, Y., Liu, Q., Lou, S., Luo, Y., Sun, H., Zeng, H., Deng, J."Decreased expression of the augmenter of liver regeneration results in growth inhibition and increased chemosensitivity of acute T lymphoblastic leukemia cells". Oncology Reports 38, no. 5 (2017): 3130-3136. https://doi.org/10.3892/or.2017.5984