天然产物研究与开发 ›› 2015, Vol. 27 ›› Issue (2): 344-349.doi: 10.16333/j.1001-6880.2015.02.029

• 开发研究 • 上一篇    下一篇

马齿苋多糖对细胞存活率的影响及其毒性测定方法的比较研究

韩笑1,2,吴光杰1,2,李玉萍1,2*,姚丽华1,2,王晨曦1,2,陈美琴1,2   

  1. 1 江西科技师范大学生命科学学院;2江西省生物加工过程重点实验室,南昌 330013
  • 出版日期:2015-02-15 发布日期:2015-02-15

Effects of Polysaccharides from Portulaca oleracea L.on Cell Viability and Comparison of Cell Viable Assays

HAN Xiao1,2, WU Guang-jie1,2, LI Yu-ping1,2*, YAO Li-hua1,2, WANG Chen-xi1,2, CHEN Mei-qin1,2   

  1. 1 School of Life Science,Jiangxi Science & Technology Normal University; 2 Jiangxi Key Laboratory of Bioprocess Engineering,Nanchang,330013,China
  • Online:2015-02-15 Published:2015-02-15

摘要: 本文采用三种常用的细胞毒性试验方法(四甲基偶氮唑盐方法、中性红染料摄取法和乳酸脱氢酶释放法)评价马齿苋多糖抑制3T3-L1前脂肪细胞增殖的敏感性。结果显示,在一定浓度(0.01~0.50 mg/mL)和时间(1~5 d)范围内,马齿苋多糖具有抑制3T3L1前脂肪细胞增殖作用,且呈浓度和时间依存关系。MTT法和LDH法在马齿苋多糖(0.01 mg/mL)处理3T3L1细胞1 d时,细胞增殖率明显低于对照组(P<0.01),NRU法在马齿苋多糖处理3 d时,细胞增殖率明显低于对照组(P<0.05)。但当马齿苋浓度增加到0.5 mg/mL、处理时间延长至5 d时,细胞出现明显的固缩、漂浮和裂解等毒性作用。MTT法和LDH法较NRU法更为敏感,马齿苋多糖主要影响3T3-L1前脂肪细胞的膜完整性和线粒体功能。

关键词: 马齿苋多糖, 3T3-L1前脂肪细胞, 细胞增殖, 细胞毒性

Abstract: In this study,the effects of polysaccharides from Portulaca oleracea L.(POPs) on proliferation of 3T3-L1 preadipocytes and its cytotoxicity were investigated.The obtained results suggested that treatment with POPs (0.01-0.5 mg/mL) for 1,3,and 5 d markedly inhibited the proliferation of 3T3-L1 preadipocytes (P<0.01, P<0.001).Compared with the control group,the number of cells in POPs-treatment groups decreased significantly by MTT assay and LDH assay (P<0.01).Through NRU assay,cells treated with POPs for 3 d exhibited lower cell proliferation level compared to that of control group (P<0.05).However,on the 3 d or 5 d POPs treatment,the cytotoxicity of POPs was observed in the high concentration (0.5 mg/mL) POPs-treated groups.Cells showed obvious shrinkage,cracking,floating,etc. These results revealed that all of three methods can be used to evaluate the anti-proliferation activity of POPs on 3T3-L1 preadipocytes.MTT assay and LDH assay were more sensitive than NRU assay.Polysaccharides from P.oleracea mainly affect membrane integrity and mitochondrial function of 3T3-L1 preadipocytes.

Key words: Portulaca oleracea L.polysaccharides, 3T3-L1 preadipocytes, proliferation, cytotoxicity

中图分类号: 

R26