Abstract
RNA-RNAand protein-RNAinteractions are essential for post-transcriptionalregulationin normal development and may be deregulated in cancerinitiation and progression. The RNA-binding proteinPCBP2, an oncogenic protein in human malignant gliomas, is an essential regulator of mRNA and miRNA biogenesis, stability and activity.Here, we identified Rho GDP dissociation inhibitor a (ARHGDIA) as a target mRNA that binds to PCBP2, and we uncovered the role of ARHGDIA as a putative metastasis suppressor through analyses of in vitro and in vivo models of EMT and metastasis. Furthermore, we demonstrated that ARHGDIA is a potential target of miR-151-5p and miR-16 in gliomas. The interaction between PCBP2 and the 3'UTR of the ARHGDIA mRNA may induce a local change in RNA structure that favors subsequent binding of miR-151-5p and miR-16, thus leading to the suppression of ARHGDIA expression. PCBP2 may facilitate miR-151-5p and miR-16 promotion of glioma cell migration and invasion through mitigating the function of ARHGDIA.
Original language | English (US) |
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Pages (from-to) | 19483-19498 |
Number of pages | 16 |
Journal | Oncotarget |
Volume | 7 |
Issue number | 15 |
DOIs | |
State | Published - Apr 12 2016 |
Keywords
- ARHGDIA
- Glioma
- MiRNA
- Migration and invasion
- PCBP2
ASJC Scopus subject areas
- Oncology