中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (28): 4514-4519.doi: 10.3969/j.issn.2095-4344.2015.28.016

• 肿瘤干细胞 cancer stem cells • 上一篇    下一篇

沉默KDR基因乳腺癌MCF-7细胞的生物学特征改变

于治灏1,2,3,4,余 岳1,2,3,4,杨 欣5,曹旭晨1,2,3,4   

  1. 1天津医科大学肿瘤医院,国家肿瘤临床医学研究中心,天津市 300060;
    2乳腺癌防治教育部重点实验室,天津市 300060;
    3天津市“肿瘤防治”重点实验室,天津市 300060;
    4天津医科大学肿瘤医院乳腺一科,天津市 300060;
    5北京大学肿瘤医院病理科,北京市 100142
  • 出版日期:2015-07-02 发布日期:2015-07-02
  • 通讯作者: 曹旭晨,博士,主任医师,天津医科大学肿瘤医院,国家肿瘤临床医学研究中心,天津市 300060;乳腺癌防治教育部重点实验室,天津市 300060;天津市“肿瘤防治”重点实验室,天津市 300060;天津医科大学肿瘤医院乳腺一科,天津市 300060
  • 作者简介:于治灏,女,1983年生,天津市人,汉族,2009年天津医科大学毕业,硕士,医师,主要从事乳腺癌临床诊疗及肿瘤干细胞研究。

KDR gene silencing effect on biological properties of breast cancer MCF-7 cells

Yu Zhi-hao1, 2, 3, 4, Yu Yue1, 2, 3, 4, Yang Xin5, Cao Xu-chen1, 2, 3, 4   

  1. 1Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin 300060, China; 
    2Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin 300060, China; 
    3Tianin Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China; 
    4the First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China; 
    5Department of Pathology, Beijing Cancer Hospital, Beijing 100142, China
  • Online:2015-07-02 Published:2015-07-02
  • Contact: Cao Xu-chen, M.D., Chief physician, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin 300060, China; Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin 300060, China; Tianin Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China; the First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
  • About author:Yu Zhi-hao, Master, Physician, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin 300060, China; Key Laboratory of Breast Cancer Prevention and Therapy, Tianjin Medical University, Ministry of Education, Tianjin 300060, China; Tianin Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China; the First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China

摘要:

背景:随着基因工程以及肿瘤生物分子学等新兴学科的发展壮大,基因治疗肿瘤成为一种新的治疗模式。
目的:探讨KDR基因沉默对乳腺癌MCF-7细胞增殖能力和侵袭能力的影响。
方法:设计针对KDR基因的小分子干扰RNA(siRNA)序列,转染人乳腺癌MCF-7细胞,应用RT-PCR及Western blot法检测沉默KDR基因后MCF-7细胞KDR mRNA及蛋白的表达;应用流式细胞仪、CCK-8 增殖实验、小室侵袭实验检测沉默KDR基因后乳腺癌MCF-7细胞的细胞周期、增殖能力、侵袭能力的变化。
结果与结论:KDR基因沉默48 h后,乳腺癌MCF-7细胞KDR mRNA及蛋白表达明显降低;乳腺癌MCF-7细胞停滞在G0/G1周期,S期的细胞数目减低,细胞增殖得到显著抑制,穿过滤膜的细胞数量明显减少。上述结果表明沉默KDR基因后乳腺癌MCF-7细胞的增殖、侵袭能力得到明显抑制,说明KDR基因沉默可能成为新的有效治疗乳腺癌的靶点。

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 干细胞, 肿瘤干细胞, 乳腺癌, KDR基因, MCF-7, 肿瘤干细胞, 基因沉默, 细胞增殖

Abstract:

BACKGROUND: With the development of genetic engineering and tumor molecular biology, gene therapy for tumors has become a new treatment modality.
OBJECTIVE: To explore the effect of the KDR gene silencing on the proliferation and invasion capacity of breast cancer MCF-7 cells.
METHODS: Interfering RNA (siRNA) sequences for small molecule KDR gene was designed and transferred into human breast cancer MCF-7 cells. Then, RT-PCR and western blot assay were used to detect the KDR mRNA and protein expression. Flow cytometry, cell counting kit-8 test and Transwell test were employed to detect the cell cycle, proliferative capacity and invasion capacity of breast cancer MCF-7 cells after the KDR gene silencing.
RESULTS AND CONCLUSION: After 48 hours of KDR silencing, the mRNA and protein expressions of KDR in MCF-7 cells were decreased obviously; MCF-7 cells arrested at G0/G1 stage and the number of cells at S stage was reduced. Cell proliferation was inhibited significantly. The amount of cells passing through the filtering membrane became less. After KDR gene silencing, the proliferation and invasion of breast cancer MCF-7 cancer stem cells were inhibited remarkably, indicating that KDR gene silencing may be a new target for the effective treatment of breast cancer.

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Breast Neoplasms, Neoplastic Stem Cells, Gene Silencing, Cell Proliferation

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