Open Access

O-GlcNAcylation promotes migration and invasion in human ovarian cancer cells via the RhoA/ROCK/MLC pathway

  • Authors:
    • Yichao Niu
    • Ye Xia
    • Jingyun Wang
    • Xiaofei Shi
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  • Published online on: February 24, 2017     https://doi.org/10.3892/mmr.2017.6244
  • Pages: 2083-2089
  • Copyright: © Niu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

O-GlcNAcylation is a dynamic and reversible post-translational modification associated with the regulation of multiple cellular functions. The addition and removal of O‑Linked β-N-acetylglucosamine (O‑GlcNAc) on target proteins is catalyzed by O‑GlcNAc transferase (OGT) and O‑GlcNAcase (OGA), respectively. Accumulating evidence suggests that O-GlcNAcylation is associated with the malignancy of several types of human cancer. To investigate the effect of O-GlcNAcylation on ovarian cancer phenotypes, global O‑GlcNAc levels were decreased by OGT silencing through RNA interference and increased by inhibiting OGA activity with Thiamet‑G. Transwell assay results demonstrated that OGT silencing inhibited the migration and invasion of SKOV3 and 59M ovarian cells in vitro, while Thiamet‑G treatment promoted migration and invasion. Furthermore, a pull‑down assay and western blot analysis demonstrated that Thiamet-G treatment enhanced RhoA activity and the phosphorylation of the Rho‑associated protein kinase (ROCK) substrate, myosin light chain (MLC), while OGT silencing attenuated RhoA activity and MLC phosphorylation. In addition, RhoA silencing via RNA interference and inhibition of ROCK activity with Y‑27632 prevented Thiamet‑G‑induced increases in cell migration and invasion. These data suggest that O‑GlcNAcylation augments the motility of ovarian cancer cells via the RhoA/ROCK/MLC signaling pathway. Therefore, O‑GlcNAcylation may be a potential target for the diagnosis and treatment of ovarian cancer.
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April-2017
Volume 15 Issue 4

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Niu Y, Xia Y, Wang J and Shi X: O-GlcNAcylation promotes migration and invasion in human ovarian cancer cells via the RhoA/ROCK/MLC pathway. Mol Med Rep 15: 2083-2089, 2017.
APA
Niu, Y., Xia, Y., Wang, J., & Shi, X. (2017). O-GlcNAcylation promotes migration and invasion in human ovarian cancer cells via the RhoA/ROCK/MLC pathway. Molecular Medicine Reports, 15, 2083-2089. https://doi.org/10.3892/mmr.2017.6244
MLA
Niu, Y., Xia, Y., Wang, J., Shi, X."O-GlcNAcylation promotes migration and invasion in human ovarian cancer cells via the RhoA/ROCK/MLC pathway". Molecular Medicine Reports 15.4 (2017): 2083-2089.
Chicago
Niu, Y., Xia, Y., Wang, J., Shi, X."O-GlcNAcylation promotes migration and invasion in human ovarian cancer cells via the RhoA/ROCK/MLC pathway". Molecular Medicine Reports 15, no. 4 (2017): 2083-2089. https://doi.org/10.3892/mmr.2017.6244