中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (1): 49-54.doi: 10.3969/j.issn.2095-4344.2016.01.009

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

隐丹参酮对肾癌干细胞增殖和凋亡的影响

冯 敏,贾明华   

  1. 郑州颐和医院肾内科,河南省郑州市 450008
  • 收稿日期:2015-11-08 出版日期:2016-01-01 发布日期:2016-01-01
  • 作者简介:冯敏,女,1970年生,辽宁省兴城市人,汉族,1994年河南医科大学毕业,副主任医师,主要从事肾脏内科方面研究。

Cryptotanshinone effects on the proliferation and apoptosis of renal carcinoma stem cells

Feng Min, Jia Ming-hua   

  1. Department of Nephrology, Zhengzhou Yihe Hospital, Zhengzhou 450008, Henan Province, China
  • Received:2015-11-08 Online:2016-01-01 Published:2016-01-01
  • About author:Feng Min, Associate chief physician, Department of Nephrology, Zhengzhou Yihe Hospital, Zhengzhou 450008, Henan Province, China

摘要:

文章快速阅读:

  

文题释义:
肿瘤干细胞:又称为肿瘤始动细胞,是肿瘤内部存在着一组具有干细胞特性的小的细胞集群,具有自我更新、无限增殖和多向分化的能力。目前广泛认为肿瘤干细胞参与肿瘤的发生、发展,并且与肿瘤的化疗耐药性以及放疗抗性密切相关。
隐丹参酮:丹参中的化学成分主要分为水溶性和脂溶性2类,其中水溶性成分多具有酚酸性结构,而脂溶性成分主要是二萜醌类衍生物,脂溶性成分中的隐丹参酮因具有菲并呋喃结构且D环上C15与C16之间为单键而呈现独特的药理活性。药动学研究也发现隐丹参酮的药动学特征符合二室开放模型,其在大鼠体内的半衰期约为6.6 h,且比丹参酮ⅡA等其他脂溶性成分分布缓慢,消除时间长,这些都使隐丹参酮渐渐引起了人们的关注,其在心血管疾病、抗肿瘤、抗菌消炎、代谢紊乱性疾病及神经退行性疾病等方面显示出很好的前景。

 

背景:前期研究发现隐丹参酮对多种肿瘤具有抑制作用,但是对肾癌的影响尚未有报道。
目的:探讨隐丹参酮对肾癌干细胞增殖和凋亡的影响。
方法:采用免疫磁珠法分离纯化CD133+肾癌干细胞。通过MTT法检测不同质量浓度(0,0.2,1,5 mg/L)隐丹参酮对CD133+肾癌干细胞增殖的影响;流式细胞仪检测不同质量浓度(0,0.2,1,5 mg/L)隐丹参酮对CD133+肾癌干细胞凋亡的影响;免疫印迹检测5 mg/L隐丹参酮对肾癌干细胞中Ki67、Bcl-2、Caspase-3和p-Caspase-3蛋白表达的影响。
结果与结论:分选前CD133+阳性细胞的百分率为6.32%,分选后CD133+阳性细胞的百分率为82.73%,差异有显著性意义(P < 0.001)。隐丹参酮抑制肾癌干细胞生长,促进肾癌干细胞凋亡,并呈浓度依赖性。Ki67和Bcl-2在5 mg/L隐丹参酮组中的表达明显低于未加药组,p-Caspase-3的表达水平则明显高于未加药组,而Caspase-3在两组中的表达水平没有明显变化,结果表明隐丹参酮可能通过抑制肾癌干细胞Ki67和Bcl-2表达,促进p-Caspase-3表达来发挥抑增殖促凋亡效应。 

 ORCID: 0000-0002-2322-5208(冯敏)

关键词: 干细胞, 肿瘤干细胞, 隐丹参酮, 肾癌, 肾癌干细胞, 增殖, 凋亡

Abstract:

BACKGROUND: Previous studies have found that cryptotanshinone represses multiple tumors, but little is reported on its effect on renal carcinoma.
OBJECTIVE: To explore the effect of cryptotanshinone on the proliferation and apoptosis of the renal carcinoma stem cells.
METHODS: CD133+ renal carcinoma stem cells were separated from OS-RC-2 cells by immunomagnetic bead separation. Effects of 0, 0.2, 1, 5 mg/L cryptotanshinone on the proliferation and apoptosis of CD133+ renal carcinoma stem cells were detected by MTT and flow cytometry, respectively. Expression levels of Ki67, Bcl-2, Caspase-3 and p-Caspase-3 protein were detected by western blot assay.
RESULTS AND CONCLUSION: After magnetic cell sorting, the percentage of CD133+ cells was increased from 6.32% to 82.73%, and there was a significant difference before and after cell sorting (P < 0.001). Cryptotanshinone could repress the proliferation of CD133+ renal carcinoma stem cells and promote cell apoptosis in a dose-dependent manner. The protein expression levels of Ki67 and Bcl-2 in the 5 mg/L cryptotanshinone group were significantly decreased compared with the control group, while the protein expression level of p-Caspase-3 protein was significantly increased. In addition, there was no difference in the protein expression of Caspase-3 between cryptotanshinone and control group. These findings indicate that cryptotanshinone may be a potent anticancer drug for the treatment of renal carcinoma by inhibiting expression of Ki67 and Bcl-2 and promoting protein expression of p-Caspase-3. 
 

中图分类号: