Ubiquitin ligase Siah1 promotes the migration and invasion of human glioma cells by regulating HIF-1α signaling under hypoxia

  • Authors:
    • Hengliang Shi
    • Bao Zheng
    • Yuxuan Wu
    • Yuan Tang
    • Lei Wang
    • Yong Gao
    • Hui Gong
    • Jin Du
    • Rutong Yu
  • View Affiliations

  • Published online on: December 23, 2014     https://doi.org/10.3892/or.2014.3695
  • Pages: 1185-1190
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Abstract

It has been reported that by regulating PHD3 stability, Siah1 contributes to the abundance of hypoxia-inducible factor (HIF)-1α, thereby playing an important role in the cellular response to hypoxia. However, the expression level and functional significance of Siah1 in human malignant glioma, which is characterized by high migration and invasion potential, have never been investigated. We report here, that Siah1 was expressed highly in human glioma tissues compared with its expression in normal brain tissues and was correlated with advanced tumor status and stage. The knockdown of Siah1 by short-hairpin RNA severely suppressed the migration and invasion of human glioma U251 cells under hypoxia, while overexpression of Siah1 promoted it. Furthermore, we demonstrated that the glioma cell migration and invasion under hypoxia mediated by Siah1 was achieved by reducing the stability of PHD3, which protected the HIF-1α from degradation. These findings suggest that Siah1 plays important roles in the migration and invasion of human glioma cells under hypoxia, which may provide some guidance for the targeted therapy of human glioma based on the interference of the Siah1-PHD3-HIF-1α signaling pathway.
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March-2015
Volume 33 Issue 3

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

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Spandidos Publications style
Shi H, Zheng B, Wu Y, Tang Y, Wang L, Gao Y, Gong H, Du J and Yu R: Ubiquitin ligase Siah1 promotes the migration and invasion of human glioma cells by regulating HIF-1α signaling under hypoxia. Oncol Rep 33: 1185-1190, 2015
APA
Shi, H., Zheng, B., Wu, Y., Tang, Y., Wang, L., Gao, Y. ... Yu, R. (2015). Ubiquitin ligase Siah1 promotes the migration and invasion of human glioma cells by regulating HIF-1α signaling under hypoxia. Oncology Reports, 33, 1185-1190. https://doi.org/10.3892/or.2014.3695
MLA
Shi, H., Zheng, B., Wu, Y., Tang, Y., Wang, L., Gao, Y., Gong, H., Du, J., Yu, R."Ubiquitin ligase Siah1 promotes the migration and invasion of human glioma cells by regulating HIF-1α signaling under hypoxia". Oncology Reports 33.3 (2015): 1185-1190.
Chicago
Shi, H., Zheng, B., Wu, Y., Tang, Y., Wang, L., Gao, Y., Gong, H., Du, J., Yu, R."Ubiquitin ligase Siah1 promotes the migration and invasion of human glioma cells by regulating HIF-1α signaling under hypoxia". Oncology Reports 33, no. 3 (2015): 1185-1190. https://doi.org/10.3892/or.2014.3695