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Up-Regulation of miR-9 Target CBX7 to Regulate Invasion Ability of Bladder Transitional Cell Carcinoma

BACKGROUND: Bladder urothelial carcinoma is the most common genitourinary system cancer in China. The objective of this study was to investigate whether the miR-9 can regulate the invasion ability of human bladder transitional cell carcinoma cells by down-regulation of CBX7. MATERIAL/METHODS: The ex...

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Autores principales: Xie, Dalong, Shang, Chao, Zhang, Hui, Guo, Yan, Tong, Xiaojie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Scientific Literature, Inc. 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4307688/
https://www.ncbi.nlm.nih.gov/pubmed/25596753
http://dx.doi.org/10.12659/MSM.893232
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author Xie, Dalong
Shang, Chao
Zhang, Hui
Guo, Yan
Tong, Xiaojie
author_facet Xie, Dalong
Shang, Chao
Zhang, Hui
Guo, Yan
Tong, Xiaojie
author_sort Xie, Dalong
collection PubMed
description BACKGROUND: Bladder urothelial carcinoma is the most common genitourinary system cancer in China. The objective of this study was to investigate whether the miR-9 can regulate the invasion ability of human bladder transitional cell carcinoma cells by down-regulation of CBX7. MATERIAL/METHODS: The expression of miR-9 was detected by quantitative real-time PCR in bladder transitional cell carcinomas (TCC) and normal bladder transitional cell (NBTC) samples. Bioinformatics software was used to predict some potential target genes of miR-9. T24 cells were transfected with pre-miR-9, and the CBX7 protein expression was detected by Western blot. Luciferase activities assay was selected to verify that CBX7 was a direct and specific gene of miR-9. T24 cells were transfected with pcDNA-CBX7, and the expression of CBX7 gene was detected. Then, the transwell assay was used to detect the invasion ability of T24 cells with CBX7 over-expression. RESULTS: The expression of miR-9 increased significantly in human TCC specimens compared to that in NBTC specimens. TargetScan and PicTar software programs predicted CBX7 gene was a target gene of miR-9. The pre-miR-9 could up-regulate the miR-9 expression and down-regulate CBX7 protein expression. The luciferase activities assay verified that CBX7 gene was a direct and specific target gene of miR-9. The pcDNA-CBX7 transfection could up-regulate the CBX7 protein expression, and the invasion ability of T24 cells with CBX7 over-expression decreased significantly. CONCLUSIONS: Aberrantly expressed miR-9 contributes to T24 cells invasion, partly through directly down-regulating CBX7 protein expression in TCC. This miRNA signature offers a new potential therapeutic target for TCC.
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spelling pubmed-43076882015-01-27 Up-Regulation of miR-9 Target CBX7 to Regulate Invasion Ability of Bladder Transitional Cell Carcinoma Xie, Dalong Shang, Chao Zhang, Hui Guo, Yan Tong, Xiaojie Med Sci Monit Molecular Biology BACKGROUND: Bladder urothelial carcinoma is the most common genitourinary system cancer in China. The objective of this study was to investigate whether the miR-9 can regulate the invasion ability of human bladder transitional cell carcinoma cells by down-regulation of CBX7. MATERIAL/METHODS: The expression of miR-9 was detected by quantitative real-time PCR in bladder transitional cell carcinomas (TCC) and normal bladder transitional cell (NBTC) samples. Bioinformatics software was used to predict some potential target genes of miR-9. T24 cells were transfected with pre-miR-9, and the CBX7 protein expression was detected by Western blot. Luciferase activities assay was selected to verify that CBX7 was a direct and specific gene of miR-9. T24 cells were transfected with pcDNA-CBX7, and the expression of CBX7 gene was detected. Then, the transwell assay was used to detect the invasion ability of T24 cells with CBX7 over-expression. RESULTS: The expression of miR-9 increased significantly in human TCC specimens compared to that in NBTC specimens. TargetScan and PicTar software programs predicted CBX7 gene was a target gene of miR-9. The pre-miR-9 could up-regulate the miR-9 expression and down-regulate CBX7 protein expression. The luciferase activities assay verified that CBX7 gene was a direct and specific target gene of miR-9. The pcDNA-CBX7 transfection could up-regulate the CBX7 protein expression, and the invasion ability of T24 cells with CBX7 over-expression decreased significantly. CONCLUSIONS: Aberrantly expressed miR-9 contributes to T24 cells invasion, partly through directly down-regulating CBX7 protein expression in TCC. This miRNA signature offers a new potential therapeutic target for TCC. International Scientific Literature, Inc. 2015-01-18 /pmc/articles/PMC4307688/ /pubmed/25596753 http://dx.doi.org/10.12659/MSM.893232 Text en © Med Sci Monit, 2015 This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License
spellingShingle Molecular Biology
Xie, Dalong
Shang, Chao
Zhang, Hui
Guo, Yan
Tong, Xiaojie
Up-Regulation of miR-9 Target CBX7 to Regulate Invasion Ability of Bladder Transitional Cell Carcinoma
title Up-Regulation of miR-9 Target CBX7 to Regulate Invasion Ability of Bladder Transitional Cell Carcinoma
title_full Up-Regulation of miR-9 Target CBX7 to Regulate Invasion Ability of Bladder Transitional Cell Carcinoma
title_fullStr Up-Regulation of miR-9 Target CBX7 to Regulate Invasion Ability of Bladder Transitional Cell Carcinoma
title_full_unstemmed Up-Regulation of miR-9 Target CBX7 to Regulate Invasion Ability of Bladder Transitional Cell Carcinoma
title_short Up-Regulation of miR-9 Target CBX7 to Regulate Invasion Ability of Bladder Transitional Cell Carcinoma
title_sort up-regulation of mir-9 target cbx7 to regulate invasion ability of bladder transitional cell carcinoma
topic Molecular Biology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4307688/
https://www.ncbi.nlm.nih.gov/pubmed/25596753
http://dx.doi.org/10.12659/MSM.893232
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