中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (5): 729-733.doi: 10.3969/j.issn.2095-4344.1573

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

粉防己碱对神经母细胞瘤干细胞增殖和干性基因表达的影响及作用机制

谢东可,何 霞,廖凯男   

  1. 西南医科大学附属医院小儿外科,四川省泸州市 646000
  • 修回日期:2018-10-30 出版日期:2019-02-18 发布日期:2019-02-18
  • 通讯作者: 廖凯男,硕士,副教授,西南医科大学附属医院小儿外科,四川省泸州市 646000
  • 作者简介:谢东可,男,1986年生,山东省鱼台县人,汉族,2013年天津医科大学毕业,硕士,医师,主要从事小儿外科相关疾病临床及基础研究。
  • 基金资助:

    西南医科大学校级课题(2015-YJ092),项目负责人:谢东可

Inhibitory effects and mechanisms of tetrandrine on proliferation and stemness marker expression of neuroblastoma stem cells

Xie Dongke, He Xia, Liao Kainan   

  1. Department of Pediatric Surgery, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Revised:2018-10-30 Online:2019-02-18 Published:2019-02-18
  • Contact: Liao Kainan, Master, Associate professor, Department of Pediatric Surgery, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Xie Dongke, Master, Physician, Department of Pediatric Surgery, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Supported by:

    the Project of Southwest Medical University, No. 2015-YJ092 (to XDK)

摘要:

文章快速阅读:

文题释义:
粉防己碱:
是从粉防己根块中提取的双苄基异喹啉类生物碱成分,有大量的医用功能,包括血管生成、细胞毒性、抗炎作用、抗癌作用和抗高血压的功效。最近的研究证实了粉防己碱在多种肿瘤疾病如白血病、肺癌、肝癌、前列腺癌及肾癌等中具有抗癌活性。
Wnt/β-catenin信号通路:β-catenin与axin/APC、GSK3-β组成降解复合物,信号通路活化时,β-catenin分离并转移至核内与TCF/LEF结合调控下游靶基因。Wnt/β-catenin信号通路对于维持肝癌、大肠癌、肺癌、神经母细胞瘤及膀胱癌等肿瘤干细胞特性起到重要作用。

 

摘要
背景:
研究发现粉防己碱能通过下调β-catenin表达抑制神经胶质瘤干细胞特性,然而其对神经母细胞瘤干细胞的影响未见报道。
目的:探讨粉防己碱对神经母细胞瘤干细胞增殖及干性标志物表达的影响,并探究其分子机制。
方法:使用无血清悬浮法从神经母细胞瘤SK-N-SH细胞中获取肿瘤干细胞,给予粉防己碱干预,通过MTT法检测粉防己碱对神经母细胞瘤干细胞的增殖抑制作用,细胞免疫荧光染色检测粉防己碱干预后Nestin蛋白水平变化,克隆球形成实验检测粉防己碱干预后肿瘤干细胞成球能力变化,qRT-PCR法检测粉防己碱干预后CD133、Oct-4、Nestin mRNA表达,Western blot检测粉防己碱干预后CD133、Oct-4、Nestin、p-GSK3β和β-catenin蛋白表达。
结果与结论:与未干预组比较,粉防己碱干预后SK-N-SH干细胞增殖能力降低(P < 0.05),CD133、Oct-4和Nestin mRNA表达降低(P < 0.05),Nestin蛋白荧光强度减弱,克隆球形成能力减弱(P < 0.05),CD133、Oct-4、Nestin、p-GSK3β和β-catenin蛋白减少(P < 0.05)。结果表明,粉防己碱抑制神经母细胞瘤干细胞增殖并降低干性标志物表达,可能与其抑制Wnt/β-catenin信号通路有关。


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
ORCID:
0000-0002-9866-5195(谢东可)

关键词: 神经母细胞瘤, 肿瘤干细胞, 粉防己碱, 细胞增殖, CD133, Oct-4, Nestin, Wnt/β-catenin信号通路

Abstract:

BACKGROUND: Studies have shown that tetrandrine can inhibit the characteristics of glioma stem cells by down-regulating the expression of β-catenin. However, its effect on neuroblastoma stem cells has not been reported.
OBJECTIVE: To explore the function and mechanism of tetrandrine on proliferation and stemness marker expression of neuroblastoma stem cells. 
METHODS: Serum-free suspension method was used to obtain SK-N-SH stem cells. SK-N-SH stem cells were treated with tetrandrine, and the inhibitory effect of tetrandrine on the proliferation of neuroblastoma stem cells was detected by MTT method. Immunofluorescence staining was used to detect Nestin expression in the cells after intervention with tetrandrine. The tumorsphere-forming ability of SK-N-SH stem cells was determined by tumorsphere-forming assay. The mRNA levels of CD133, Oct-4 and Nestin were tested by qRT-PCR. The protein level of CD133, Oct-4, Nestin, p-GSK3β and β-catenin were tested by western blot. 
RESULTS AND CONCLUSION: Tetrandrine inhibited the proliferation of SK-N-SH stem cells (P < 0.05). After treated with tetrandrine, the mRNA levels of CD133, Oct-4 and Nestin in SK-N-SH stem cells were significantly decreased (P < 0.05). Fluorescence intensity of Nestin protien was weakened and the tumorsphere-forming ability of SK-N-SH stem cells was abated (P < 0.05). Tetrandrine also inhibited the protein levels of CD133, Oct-4, Nestin, p-GSK3β and β-catenin (P < 0.05). In conclusion, tetrandrine inhibits the proliferation and stemness marker expression of neuroblastoma stem cells, and the mechanism may be related to the inhibition of Wnt/β-catenin signaling pathway.


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: Neuroblastoma, Neoplastic Stem Cells, Benzylisoquinolines, Tissue Engineering

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