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International Journal of Molecular Medicine
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Article

shRNA-mediated Bmi-1 silencing sensitizes multiple myeloma cells to bortezomib

  • Authors:
    • Shun-Quan Wu
    • Zhen-Zhen Xu
    • Wen-Yan Niu
    • Hao-Bo Huang
    • Rong Zhan
  • View Affiliations / Copyright

    Affiliations: Fujian Institute of Hematology, Affiliated Union Hospital of Fujian Medical University, Fujian Provincial Key Laboratory on Hematology, Fuzhou, Fujian 350001, P.R. China
  • Pages: 616-623
    |
    Published online on: June 6, 2014
       https://doi.org/10.3892/ijmm.2014.1798
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Abstract

The introduction of bortezomib has resulted in a paradigm shift in the treatment of multiple myeloma (MM) and has contributed to the improved survival of patients with MM. Inevitably, resistance to therapy develops, and thus the clinical efficacy of bortezomib is hampered by drug resistance. The oncogene B-cell‑specific Moloney murine leukemia virus insertion site‑1 (Bmi-1) has been implicated in the pathogenesis of various human malignancies. Furthermore, RNA interference (RNAi)‑mediated Bmi-1 silencing has been shown to sensitize tumor cells to chemotherapy and radiation. The role of Bmi-1 in influencing the response to bortezomib therapy has not been investigated to date. In the present study, Bmi-1 was silenced in two MM cell lines (U266 and RPMI8226) using short hairpin RNA (shRNA) targeting Bmi-1 (shBmi-1). A cell counting kit-8 (CCK-8) assay was performed to analyze cell proliferation and evaluate the 50% inhibitory concentration (IC50) values of bortezomib. Cell cycle progression and apoptosis were analyzed by flow cytometry (FCM), and the mRNA and protein expression of associated genes (Bmi-1, p14, p21, Bcl-2 and Bax) was quantified by RT-qPCR and western blot analysis, respectively. The IC50 values significantly decreased in the cells transfected with shBmi-1 (p<0.05). The depletion of Bmi-1 sensitized the MM cells to bortezomib, which increased the G1 phase duration and enhanced bortezomib‑induced apoptosis (p<0.05). The expression of p21 and Bax (apoptosis inducer) was upregulated, whereas that of the anti-apoptotic protein, Bcl-2, was downregulated in the Bmi-1‑silenced cells (p<0.05). The depletion of Bmi-1 enhanced the sensitivity of MM cells to bortezomib by inhibiting cell proliferation and inducing cell cycle arrest and apoptosis. Our data suggest that Bmi-1 may serve as an important novel therapeutic target in MM.
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1 

Kyle RA and Rajkumar SV: Multiple myeloma. N Engl J Med. 351:1860–1873. 2004. View Article : Google Scholar

2 

Mitsiades CS, Mitsiades N, Munshi NC and Anderson KC: Focus on multiple myeloma. Cancer Cell. 6:439–444. 2004. View Article : Google Scholar

3 

Bergsagel PL and Kuehl WM: Molecular pathogenesis and a consequent classification of multiple myeloma. J Clin Oncol. 23:6333–6338. 2005. View Article : Google Scholar : PubMed/NCBI

4 

Hideshima T, Mitsiades C, Tonon G, Richardson PG and Anderson KC: Understanding multiple myeloma pathogenesis in the bone marrow to identify new therapeutic targets. Nat Rev Cancer. 7:585–598. 2007. View Article : Google Scholar : PubMed/NCBI

5 

Richardson PG, Barlogie B, Berenson J, et al: A phase 2 study of bortezomib in relapsed, refractory myeloma. N Engl J Med. 348:2609–2617. 2003. View Article : Google Scholar : PubMed/NCBI

6 

Kumar SK, Rajkumar SV, Dispenzieri A, et al: Improved survival in multiple myeloma and the impact of novel therapies. Blood. 111:2516–2520. 2008. View Article : Google Scholar : PubMed/NCBI

7 

Cheriyath V, Jacobs BS and Hussein MA: Proteasome inhibitors in the clinical setting: benefits and strategies to overcome multiple myeloma resistance to proteasome inhibitors. Drugs RD. 8:1–12. 2007. View Article : Google Scholar : PubMed/NCBI

8 

de Carvalho F, Costa ET, Camargo AA, et al: Targeting MAGE-C1/CT7 expression increases cell sensitivity to the proteasome inhibitor bortezomib in multiple myeloma cell lines. PLoS One. 6:e277072011.PubMed/NCBI

9 

Podar K, Gouill SL, Zhang J, et al: A pivotal role for Mcl-1 in Bortezomib-induced apoptosis. Oncogene. 27:721–731. 2008. View Article : Google Scholar : PubMed/NCBI

10 

Jacobs JJ, Kieboom K, Marino S, DePinho RA and van Lohuizen M: The oncogene and Polycomb-group gene bmi-1 regulates cell proliferation and senescence through the ink4a locus. Nature. 397:164–168. 1999. View Article : Google Scholar : PubMed/NCBI

11 

Jacobs JJ, Scheijen B, Voncken JW, Kieboom K, Berns A and van Lohuizen M: Bmi-1 collaborates with c-Myc in tumorigenesis by inhibiting c-Myc-induced apoptosis via INK4a/ARF. Genes Dev. 13:2678–2690. 1999. View Article : Google Scholar : PubMed/NCBI

12 

Leung C, Lingbeek M, Shakhova O, et al: Bmi1 is essential for cerebellar development and is overexpressed in human medulloblastomas. Nature. 428:337–341. 2004. View Article : Google Scholar : PubMed/NCBI

13 

Park IK, Qian D, Kiel M, et al: Bmi-1 is required for maintenance of adult self-renewing haematopoietic stem cells. Nature. 423:302–305. 2003. View Article : Google Scholar : PubMed/NCBI

14 

Molofsky AV, He S, Bydon M, Morrison SJ and Pardal R: Bmi-1 promotes neural stem cell self-renewal and neural development but not mouse growth and survival by repressing the p16Ink4a and p19Arf senescence pathways. Genes Dev. 19:1432–1437. 2005. View Article : Google Scholar

15 

Yang J, Chai L, Liu F, et al: Bmi-1 is a target gene for SALL4 in hematopoietic and leukemic cells. Proc Natl Acad Sci USA. 104:10494–10499. 2007. View Article : Google Scholar : PubMed/NCBI

16 

Vonlanthen S, Heighway J, Altermatt HJ, et al: The bmi-1 oncoprotein is differentially expressed in non-small cell lung cancer and correlates with INK4A-ARF locus expression. Br J Cancer. 84:1372–1376. 2001. View Article : Google Scholar : PubMed/NCBI

17 

Larmonie NS, Dik WA, Beverloo HB, van Wering ER, van Dongen JJ and Langerak AW: BMI1 as oncogenic candidate in a novel TCRB-associated chromosomal aberration in a patient with TCRgammadelta+ T-cell acute lymphoblastic leukemia. Leukemia. 22:1266–1267. 2008. View Article : Google Scholar

18 

Choi YJ, Choi YL, Cho EY, et al: Expression of Bmi-1 protein in tumor tissues is associated with favorable prognosis in breast cancer patients. Breast Cancer Res Treat. 113:83–93. 2009. View Article : Google Scholar : PubMed/NCBI

19 

Kim JH, Yoon SY, Kim CN, et al: The Bmi-1 oncoprotein is overexpressed in human colorectal cancer and correlates with the reduced p16INK4a/p14ARF proteins. Cancer Letters. 203:217–224. 2004. View Article : Google Scholar : PubMed/NCBI

20 

Song W, Tao K, Li H, et al: Bmi-1 is related to proliferation, survival and poor prognosis in pancreatic cancer. Cancer Sci. 101:1754–1760. 2010. View Article : Google Scholar

21 

van Leenders GJ, Dukers D, Hessels D, et al: Polycomb-group oncogenes EZH2, BMI1, and RING1 are overexpressed in prostate cancer with adverse pathologic and clinical features. Eur Urol. 52:455–463. 2007.PubMed/NCBI

22 

Jagani Z, Wiederschain D, Loo A, et al: The Polycomb group protein Bmi-1 is essential for the growth of multiple myeloma cells. Cancer Res. 70:5528–5538. 2010. View Article : Google Scholar : PubMed/NCBI

23 

Crea F, Duhagon Serrat MA, Hurt EM, Thomas SB, Danesi R and Farrar WL: BMI1 silencing enhances docetaxel activity and impairs antioxidant response in prostate cancer. Int J Cancer. 128:1946–1954. 2011. View Article : Google Scholar : PubMed/NCBI

24 

Wang E, Bhattacharyya S, Szabolcs A, et al: Enhancing chemotherapy response with Bmi-1 silencing in ovarian cancer. PLoS One. 6:e17918

25 

Wu J, Hu D, Yang G, et al: Down-regulation of BMI-1 cooperates with artemisinin on growth inhibition of nasopharyngeal carcinoma cells. J Cell Biochem. 112:1938–1948. 2011. View Article : Google Scholar : PubMed/NCBI

26 

Fasano CA, Dimos JT, Ivanova NB, Lowry N, Lemischka IR and Temple S: shRNA knockdown of Bmi-1 reveals a critical role for p21-Rb pathway in NSC self-renewal during development. Cell Stem Cell. 1:87–99. 2007. View Article : Google Scholar : PubMed/NCBI

27 

Huang BB, Gao QM, Liang W, Xiu B, Zhang WJ and Liang AB: Down-regulation of SENP1 expression increases apoptosis of Burkitt lymphoma cells. Asian Pac J Cancer Prev. 13:2045–2049. 2012. View Article : Google Scholar : PubMed/NCBI

28 

Fonseca R, Barlogie B, Bataille R, et al: Genetics and cytogenetics of multiple myeloma: a workshop report. Cancer Res. 64:1546–1558. 2004. View Article : Google Scholar : PubMed/NCBI

29 

Briani C, Berno T, Campagnolo M and Zambello R: Lenalidomide for bortezomib-resistant multiple myeloma. Nat Rev Clin Oncol. 7: View Article : Google Scholar : 2010. View Article : Google Scholar : PubMed/NCBI

30 

Hideshima T, Bradner JE, Wong J, et al: Small-molecule inhibition of proteasome and aggresome function induces synergistic antitumor activity in multiple myeloma. Proc Natl Acad Sci USA. 102:8567–8572. 2005. View Article : Google Scholar : PubMed/NCBI

31 

Liu L, Andrews LG and Tollefsbol TO: Loss of the human polycomb group protein BMI1 promotes cancer-specific cell death. Oncogene. 25:4370–4375. 2006. View Article : Google Scholar : PubMed/NCBI

32 

Wang H, Pan K, Zhang HK, et al: Increased polycomb-group oncogene Bmi-1 expression correlates with poor prognosis in hepatocellular carcinoma. J Cancer Res and Clin Oncol. 134:535–541. 2008. View Article : Google Scholar : PubMed/NCBI

33 

Mihara K, Chowdhury M, Nakaju N, et al: Bmi-1 is useful as a novel molecular marker for predicting progression of myelodysplastic syndrome and patient prognosis. Blood. 107:305–308. 2006. View Article : Google Scholar : PubMed/NCBI

34 

Yu J, Tiwari S, Steiner P and Zhang L: Differential apoptotic response to the proteasome inhibitor Bortezomib [VELCADE, PS-341] in Bax-deficient and p21-deficient colon cancer cells. Cancer Biol Ther. 2:694–699. 2003.

35 

An B, Goldfarb RH, Siman R and Dou QP: Novel dipeptidyl proteasome inhibitors overcome Bcl-2 protective function and selectively accumulate the cyclin-dependent kinase inhibitor p27 and induce apoptosis in transformed, but not normal, human fibroblasts. Cell Death Differ. 5:1062–1075. 1998. View Article : Google Scholar

36 

Lazzarini R, Moretti S, Orecchia S, Betta PG, Procopio A and Catalano A: Enhanced antitumor therapy by inhibition of p21waf1 in human malignant mesothelioma. Clin Cancer Res. 14:5099–5107. 2008. View Article : Google Scholar : PubMed/NCBI

37 

Gross A, McDonnell JM and Korsmeyer SJ: BCL-2 family members and the mitochondria in apoptosis. Genes Dev. 13:1899–1911. 1999. View Article : Google Scholar : PubMed/NCBI

38 

Herrmann JL, Briones F Jr, Brisbay S, Logothetis CJ and McDonnell TJ: Prostate carcinoma cell death resulting from inhibition of proteasome activity is independent of functional Bcl-2 and p53. Oncogene. 17:2889–2899. 1998. View Article : Google Scholar : PubMed/NCBI

39 

Tan TT, Degenhardt K, Nelson DA, et al: Key roles of BIM-driven apoptosis in epithelial tumors and rational chemotherapy. Cancer Cell. 7:227–238. 2005. View Article : Google Scholar : PubMed/NCBI

40 

McConkey DJ and Zhu K: Mechanisms of proteasome inhibitor action and resistance in cancer. Drug Resist Updat. 11:164–179. 2008. View Article : Google Scholar : PubMed/NCBI

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Copy and paste a formatted citation
Spandidos Publications style
Wu S, Xu Z, Niu W, Huang H and Zhan R: shRNA-mediated Bmi-1 silencing sensitizes multiple myeloma cells to bortezomib. Int J Mol Med 34: 616-623, 2014.
APA
Wu, S., Xu, Z., Niu, W., Huang, H., & Zhan, R. (2014). shRNA-mediated Bmi-1 silencing sensitizes multiple myeloma cells to bortezomib. International Journal of Molecular Medicine, 34, 616-623. https://doi.org/10.3892/ijmm.2014.1798
MLA
Wu, S., Xu, Z., Niu, W., Huang, H., Zhan, R."shRNA-mediated Bmi-1 silencing sensitizes multiple myeloma cells to bortezomib". International Journal of Molecular Medicine 34.2 (2014): 616-623.
Chicago
Wu, S., Xu, Z., Niu, W., Huang, H., Zhan, R."shRNA-mediated Bmi-1 silencing sensitizes multiple myeloma cells to bortezomib". International Journal of Molecular Medicine 34, no. 2 (2014): 616-623. https://doi.org/10.3892/ijmm.2014.1798
Copy and paste a formatted citation
x
Spandidos Publications style
Wu S, Xu Z, Niu W, Huang H and Zhan R: shRNA-mediated Bmi-1 silencing sensitizes multiple myeloma cells to bortezomib. Int J Mol Med 34: 616-623, 2014.
APA
Wu, S., Xu, Z., Niu, W., Huang, H., & Zhan, R. (2014). shRNA-mediated Bmi-1 silencing sensitizes multiple myeloma cells to bortezomib. International Journal of Molecular Medicine, 34, 616-623. https://doi.org/10.3892/ijmm.2014.1798
MLA
Wu, S., Xu, Z., Niu, W., Huang, H., Zhan, R."shRNA-mediated Bmi-1 silencing sensitizes multiple myeloma cells to bortezomib". International Journal of Molecular Medicine 34.2 (2014): 616-623.
Chicago
Wu, S., Xu, Z., Niu, W., Huang, H., Zhan, R."shRNA-mediated Bmi-1 silencing sensitizes multiple myeloma cells to bortezomib". International Journal of Molecular Medicine 34, no. 2 (2014): 616-623. https://doi.org/10.3892/ijmm.2014.1798
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