HMGN5 blockade by siRNA enhances apoptosis, suppresses invasion and increases chemosensitivity to temozolomide in meningiomas

  • Authors:
    • Jing He
    • Chaoyang Liu
    • Bin Wang
    • Na Li
    • Guoqin Zuo
    • Dewei Gao
  • View Affiliations

  • Published online on: August 25, 2015     https://doi.org/10.3892/ijo.2015.3131
  • Pages: 1503-1511
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

The high-mobility group nucleosome-binding protein-5 (HMGN5) is frequently overexpressed in various malignant cancers. However, the potential correlation between HMGN5 and prognosis in patients with meningiomas remains unknown. In the present study, we explored the expression of HMGN5 in meningiomas with immunohistochemistry and correlated the results to the patient outcome. Potential effects of HMGN5 on tumor growth, apoptosis and invasion were also examined in representative cell lines (IOMM-Lee and CH157) by downregulating HMGN5 with RNA interference (siRNA). We demonstrate that there is a positive association between HMGN5 expression and meningioma histological grade. Statistical analysis reveals that lower HMGN5 expression predict lower meningioma recurrence. In addition, downregulation of HMGN5 inhibits IOMM-Lee and CH157 cell proliferation, enhances cell apoptosis and suppresses tumor invasion. Our results further revealed that HMGN5 inhibition decreased P-glycoprotein (MDR-1) expression without affecting multidrug resistance associated proteins 1 (MRP-1) expression to increase chemosensitivity to temozolomide (TMZ) of meningioma cells. Collectively, this study indicates that HMGN5 is a novel target for developing effective therapeutic strategies for malignant meningiomas.
View Figures
View References

Related Articles

Journal Cover

October-2015
Volume 47 Issue 4

Print ISSN: 1019-6439
Online ISSN:1791-2423

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
He J, Liu C, Wang B, Li N, Zuo G and Gao D: HMGN5 blockade by siRNA enhances apoptosis, suppresses invasion and increases chemosensitivity to temozolomide in meningiomas. Int J Oncol 47: 1503-1511, 2015
APA
He, J., Liu, C., Wang, B., Li, N., Zuo, G., & Gao, D. (2015). HMGN5 blockade by siRNA enhances apoptosis, suppresses invasion and increases chemosensitivity to temozolomide in meningiomas. International Journal of Oncology, 47, 1503-1511. https://doi.org/10.3892/ijo.2015.3131
MLA
He, J., Liu, C., Wang, B., Li, N., Zuo, G., Gao, D."HMGN5 blockade by siRNA enhances apoptosis, suppresses invasion and increases chemosensitivity to temozolomide in meningiomas". International Journal of Oncology 47.4 (2015): 1503-1511.
Chicago
He, J., Liu, C., Wang, B., Li, N., Zuo, G., Gao, D."HMGN5 blockade by siRNA enhances apoptosis, suppresses invasion and increases chemosensitivity to temozolomide in meningiomas". International Journal of Oncology 47, no. 4 (2015): 1503-1511. https://doi.org/10.3892/ijo.2015.3131