miR-200b suppresses glioma cell invasion by targeting PROM1 / 中华肿瘤杂志
Chinese Journal of Oncology
;
(12): 25-28, 2015.
Article
in Chinese
| WPRIM
| ID: wpr-248415
ABSTRACT
<p><b>OBJECTIVE</b>To explore whether miR-200b suppresses tumor cell invasion by targeting PROM1, thus to reveal the molecular mechanism that miR-200b functions as a tumor suppressor in glioma.</p><p><b>METHODS</b>PROM1 3'UTR-luciferase vector was constructed and dual-luciferase reporter gene assay was employed to examine the effect of miR-200b on luciferase activity. Human glioblastoma U87 cells were transfected with miR-200b mimics, and next qRT-PCR and Western blotting were performed to detect the expressions of PROM1 mRNA and protein. The effect of PROM1 down-regulation on invasion was observed after PROM1 siRNA were transfected into U87 cells.</p><p><b>RESULTS</b>The miR-200b bound to the 3'-untranslated region (UTR) of PROM1 and inhibited the luciferase activity. Its luciferase activity was down-regulated by 57.0% (P < 0.01). PROM1 protein and mRNA expressions were significantly down-regulated when miR-200b was overexpressed in the U87 cells (P < 0.05). siRNA-mediated down-regulation of PROM1 suppressed the potential of cell invasion. The invasion ability of SKOV3 cells after transfection with siRNA-PROM1 was significantly lower than that in the negative control cells (P < 0.05).</p><p><b>CONCLUSION</b>miR-200b may suppress cell invasion by targeting PROM1 in glioma.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Peptides
/
RNA, Messenger
/
Glycoproteins
/
Transfection
/
Antigens, CD
/
Down-Regulation
/
Genes, Tumor Suppressor
/
Genes, Reporter
/
Glioblastoma
/
3' Untranslated Regions
Limits:
Humans
Language:
Chinese
Journal:
Chinese Journal of Oncology
Year:
2015
Type:
Article
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