1. miR-144-3p exerts anti-tumor effects in glioblastoma by targeting c-Met.
- Author
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Lan, Fengming, Yu, Huiming, Hu, Man, Xia, Tingyi, and Yue, Xiao
- Subjects
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GLIOBLASTOMA multiforme , *PHOSPHATASES , *PHENOTYPES , *GENE expression , *CELL proliferation - Abstract
The study aimed to explore the specific function and mechanism of miR-144-3p in glioblastoma ( GBM) cells with different phosphatase and tensin homolog (PTEN) phenotypes. We demonstrated that the miR-144-3p level was significantly down-regulated in glioma compared with the non-neoplastic brain tissues, and decreased with ascending grades. The loss of miR-144-3p effectively predicted the decreased overall survival in glioma patients. Interestingly, the expression of MET was up-regulated and inversely associated with miR-144-3p level in glioma tissues. Next, we certified that miR-144-3p specifically bound to MET 3′-untranslated region (3′ UTR) and inhibited its expression. miR-144-3p potently repressed GBM cell proliferation and invasion via suppressing MET in vitro and in vivo. In addition, our results showed no difference in malignancy inhibition induced by miR-144-3p in GBM cells with different PTEN phenotypes. miR-144-3p inhibited several survival signaling pathways by targeting MET independent of PTEN status in GBM cells. Over-expression of miR-144-3p inhibited survival capability and increased apoptosis, resulting in enhancement of radiation and temozolomide sensitivity. Our data provide new insights into the potential application of miR-144-3p in GBM therapy by targeting MET and then inhibiting the downstream signaling. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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