Identification of the proliferative effect of Smad2 and 3 in the TGF β2/Smad signaling pathway using RNA interference in a glioma cell line

Dong,Chengyuan; Mi,Ruifang; Jin,Guishan; Zhou,Yiqiang; Zhang,Jin; Liu,Fusheng

doi:10.3892/mmr.2015.3614

August-2015 Volume 12 Issue 2

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August-2015 Volume 12 Issue 2

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Article Open Access

Identification of the proliferative effect of Smad2 and 3 in the TGF β2/Smad signaling pathway using RNA interference in a glioma cell line

Authors:
- Chengyuan Dong
- Ruifang Mi
- Guishan Jin
- Yiqiang Zhou
- Jin Zhang
- Fusheng Liu
View Affiliations / Copyright

Affiliations: Brain Tumor Research Center, Beijing Neurosurgical Institute and Department of Neurosurgery, Beijing Tian Tan Hospital, Capital Medical University, Beijing 100050, P.R. China

Copyright: © Dong et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].
Pages: 1824-1828
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Published online on: April 15, 2015

https://doi.org/10.3892/mmr.2015.3614
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Abstract

Gliomas are the most frequently occurring primary tumor in the brain. The most malignant form of glioma, glioblastoma multiforme (GBM), is characterized by rapid and invasive growth and is restricted to the central nervous system (CNS). The transforming growth factor β2 (TGFβ2)/small mothers against decapentaplegic (Smad) signaling pathway is important, not only in GBM cell metabolism and invasion, but also in GBM cell proliferation. However, the functions of the downstream mediators of the TGFβ2/Smads signaling pathway remain to be fully elucidated. In the present study, short hairpin (sh)RNA interference was used to specifically inhibit the expression of Smad2 and Smad3 in the TGFβ2/Smad signaling pathway to investigate the effects of shRNA on the proliferation of human GBM cells. The results demonstrated that knockdown of either Smad2 or Smad3 enhanced cellular proliferation. Additionally, the key target genes involved in GBM cell proliferation, induced by TGFβ2, were found to be dependent on Smad3, but not Smad2.

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