中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (28): 4508-4513.doi: 10.3969/j.issn.2095-4344.2015.28.015

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

Survivin基因沉默鼻咽癌G666-1细胞的生物学特性

王  慧   

  1. 天津市天津医院耳鼻咽喉科,天津市 300210
  • 出版日期:2015-07-02 发布日期:2015-07-02
  • 作者简介:王慧,女,1979年生,内蒙古自治区巴彦淖尔市人,汉族,2009年天津医科大学毕业,硕士,主要从事耳鼻喉科疾病治疗方面的研究。

Biological characteristics of G666-1 nasopharyngeal cancer stem cells in Survivin gene silencing

Wang Hui   

  1. Department of Otolaryngology, Tianjin Hospital, Tianjin 300210, China
  • Online:2015-07-02 Published:2015-07-02
  • About author:Wang Hui, Master, Department of Otolaryngology, Tianjin Hospital, Tianjin 300210, China

摘要:

背景:Survivin基因是迄今发现的最强效的凋亡抑制因子,能够抑制肿瘤细胞的增殖、迁移能力,成为近年有关肿瘤研究的热点之一。

目的:探讨Survivin基因沉默对鼻咽癌G666-1细胞生物学特性的影响。
方法:设计及合成Survivin的siRNA序列,LipofectamineTM 2000转染G666-1细胞,利用RT-PCR、Western blot检测Survivin基因沉默后的G666-1细胞Survivin mRNA及蛋白的表达,流式细胞仪检测G666-1细胞中肿瘤干细胞标志物CD44+CD133+的表达变化。另外还采用CCK-8增殖实验、划痕愈合实验、细胞侵袭实验评价Survivin基因沉默对鼻咽癌G666-1细胞增殖、迁移、侵袭能力的影响。
结果与结论:与对照组、空白组比较,实验组Survivin 基因沉默后的鼻咽癌G666-1细胞Survivin mRNA及蛋白表达显著降低,差异有显著性意义(P < 0.05);与对照组、空白组比较,实验组Survivin 基因沉默后的鼻咽癌G666-1细胞的生长速度明显减慢,增殖能力受到抑制,迁移能力和侵袭能力显著下降,差异有显著性意义(P < 0.05);肿瘤干细胞标志物CD44+CD133+的表达比例显著降低(P < 0.05)。结果表明特异性干扰Survivin基因表达可抑制鼻咽癌G666-1细胞的增殖、迁移和侵袭能力,使具有CD44+CD133+肿瘤干细胞特性的细胞比例降低,因此,Survivin基因沉默可能成为有效治疗鼻咽癌的新靶点。

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, 鼻咽癌, Survivin, 基因, siRNA, G666-1, 细胞增殖

Abstract:

BACKGROUND: Survivin gene is the most potent anti-apoptosis factor, which can inhibit tumor cell proliferation and migration. It has become a hot topic related to cancer research in recent years.

OBJECTIVE: To explore the effect of Survivin gene silencing on the biological characteristics of G666-1 nasopharyngeal carcinoma cells.
METHODS: siRNA sequence of Survivin was designed and synthesized and then transfected into G666-1 cells using LipofectamineTM 2000. After Survivin gene silencing, Survivin mRNA and protein expressions were detected by RT-PCR and western blot assay, respectively. Expression of CD44+CD133+ cells was detected by flow cytometry. In addition, the effects of Survivin gene silencing on the proliferation, migration and invasion of G666-1 cells were evaluated through cell counting kit-8 test, scratch healing assay and cell invasion assay.
RESULTS AND CONCLUSION: After Survivin gene silencing, the expressions of Survivin mRNA and protein were significantly reduced (P < 0.05); the growth of G666-1 cells was slowed dramatically, indicating the proliferation ability was inhibited, and the migration and invasion abilities were both decreased significantly (P < 0.05); the expression ratio of CD44+CD133+ cells was significantly lowered (P < 0.05). These findings indicate that the proliferation, migration and invasion of G666-1 nasopharyngeal cancer stem cells can be suppressed after Survivin gene silencing, and the proportion of CD44+CD133+ cells is reduced, thus indicating Survivin gene silencing may be a new effective target for treatment of nasopharyngeal carcinoma.

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: Nasopharyngeal Neoplasms, Neoplastic Stem Cells, Gene Silencing, Cell Proliferation

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