Downregulation of miR-221, -30d, and -15a contributes to pathogenesis of prostate cancer by targeting Bmi-1.
Biochemistry (Mosc)
; 80(3): 276-83, 2015 Mar.
Article
en En
| MEDLINE
| ID: mdl-25761682
ABSTRACT
Prostate cancer is the second leading cause of cancer-related deaths of men. Bmi-1, a member of PcG family of proteins, has been implicated in the pathogenesis of prostate cancer, and disturbed profile of microRNAs (miRNAs) has been found in prostate cancer tissues. How Bmi-1 is regulated by miRNAs is unclear. In this study, we screened 18 miRNAs that potentially repress the expression of Bmi-1 using a dual luciferase system and found that 12 miRNAs could bind with the 3'-untranslated region of Bmi-1 mRNA. Using qRT-PCR, we found that expression of miR-221, -15a, and -30d was significantly reduced in prostate cancer tissues. Subsequent functional study indicated that miR-221 and miR-30d can repress prostate cancer cell proliferation, and this effect can be partially rescued by Bmi-1 overexpression. Our study constructs the relation between downregulated miR-221 and miR-30d and prostate cancer pathogenesis. These results indicate that miR-221 and miR-30d are candidate tumor suppressor miRNAs in prostate cancer and therefore serve as potential clinical classification markers and therapeutic targets for human prostate cancer.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Neoplasias de la Próstata
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MicroARNs
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Complejo Represivo Polycomb 1
Tipo de estudio:
Etiology_studies
Límite:
Humans
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Male
Idioma:
En
Revista:
Biochemistry (Mosc)
Año:
2015
Tipo del documento:
Article
País de afiliación:
China