Abstract
Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is among the most abundant and highly conserved lncRNAs, which has been detected in a wide variety of human tumors, including gastric cancer, gallbladder cancer, and so on. Previous research has showed that MALAT1 can activate LTBP3 gene in mesenchymal stem cells. However, the specific roles of MALAT1 in glioma stem cells (GSCs) remain unclear. In this study, we aimed to identify the effects of MALAT1 on proliferation and the expression of stemness markers on glioma stem cell line SHG139S. Our results showed that downregulation of MALAT1 suppressed the expression of Sox2 and Nestin which are related to stemness, while downregulation of MALAT1 promoted the proliferation in SHG139S. Further research on the underlying mechanism showed that the effects of MALAT1 downregulation on SHG139S were through regulating ERK/MAPk signaling activity. And we also found that downregulation of MALAT1 could activate ERK/MAPK signaling and promoted proliferation in SHG139 cells. These findings show that MALAT1 plays an important role in regulating the expression of stemness markers and proliferation of SHG139S, and provide a new research direction to target the progression of GSCs.
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This work was supported by the National Natural Science Foundation of China (Grant No. 81372689).
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Yong Han and Liang Zhou have contributed equally to this work.
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Han, Y., Zhou, L., Wu, T. et al. Downregulation of lncRNA-MALAT1 Affects Proliferation and the Expression of Stemness Markers in Glioma Stem Cell Line SHG139S. Cell Mol Neurobiol 36, 1097–1107 (2016). https://doi.org/10.1007/s10571-015-0303-6
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DOI: https://doi.org/10.1007/s10571-015-0303-6