Abstract
To explore the effects of the competitive endogenous RNA (ceRNA) network between TP53INP1 and E-cadherin on the invasion and migration of glioma. TP53INP1 and E-cadherin mRNA and protein were significantly overexpressed in normal brain tissues compared with glioma tissue specimens and correlated with the grades of glioma negatively. The expression of TP53INP1 and E-cadherin were correlated positively. Patients with higher TP53INP1 or E-cadherin expression had longer overall survival. Moreover, TP53INP1 3'-UTR inhibited glioma cell proliferation, invasion and proliferation; Furthermore, the 3'-UTRs of TP53INP1 and E-cadherin harboured seven identical miRNAs binding sites, and TP53INP1 3'-UTR could increase the expression of E-cadherin and decrease the expression of vimentin thus repressing the epithelial-mesenchymal transition (EMT). However, the coding sequence of TP53INP1 could not increase the expression of E-cadherin and the inhibitory effect on EMT of TP53INP1 3'-UTR was reversed by the siRNA against Dicer. TP53INP1 3'-UTR could inhibit the EMT, thus hindering the migration and invasion of glioma via acting as a ceRNA for E-cadherin.
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