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SNCG shRNA suppressed breast cancer cell xenograft formation and growth in nude mice

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Background Overexpression of breast cancer-specific gene 1 (SNCG) is associated with poor prognosis in advanced breast cancer patients. This study aimed to determine the effects of SNCG knockdown in breast cancer cells by using small hairpin RNA (shRNA).Methods Four different SNCG shRNA oligonucleotides were designed and chemically synthesized to construct mammalian expression vectors. These vectors were then stably transfected into a breast cancer MCF-7 cell line to knockdown SNCG expression. After SNCG knockdown was confirmed, the stable cell lines were inoculated into nude mice. SNCG mRNA and protein expressions were analyzed by semi-quantitative reverse transcription-polymerase chain reaction (RT-PCR) and immunohistochemistry, respectively in both the stable cell lines and xenografts.Results All four SNCG shRNA constructs significantly reduced SNCG mRNA and protein levels in MCF-7 cells, as compared to the unrelated sequence control shRNA and the liposome control mice (P<0.05). SNCG-knockdown MCF-7cells formed significantly smaller tumor masses than cells expressing the unrelated sequence control or the liposome control mice (P<0.05).Conclusion SNCG shRNA effectively suppressed breast cancer cell formation in vivo and may be a useful clinical strategy to control breast cancer.

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期刊: 《中华医学杂志(英文版)》2011年124卷10期 1524-1528页 SCIMEDLINEISTICCSCDBP
分类号: Q522
栏目名称: ORIGINAL ARTICLES
DOI: 10.3760/cma.j.issn.0366-6999.2011.10.016
发布时间: 2011-07-08
基金项目:
the Specified Key Research Grant from Henan Province
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