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投稿时间:2021-02-09
投稿时间:2021-02-09
中文摘要: 采用DEAE-FF 离子交换和Sephdax G-15 葡聚糖凝胶层析方法, 从玉米肽中分离、 纯化, 获得具有抑制HepG2 细胞增殖活性的短肽, 采用高效液相色谱串联质谱电喷雾法(liquid chromatography-electrospray ionization tandem mass spectrometry,LC-ESI-MS/MS)对其活性片段进行结构鉴定。结果表明:其短肽的一级结构为LPPYLP[命名为玉米六肽(corn peptides-6,CPs-6)], 通过四唑盐 [3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide,MTT]比色法试验发现,CPs-6 具有抑制HepG2 细胞增殖的效果,且对L-02 细胞的毒性低。
中文关键词: 玉米活性肽(CPs-6) HepG2抑制作用 肝癌细胞 活性肽 肽的分离纯化
Abstract:A short peptide with inhibitory activity against the proliferation of HepG2 cells was obtained from corn peptides. The corn peptides were isolated and purified by column chromatography using DEAE-FF and Sephadex G-15 resins.Liquid chromatography-electrospray ionization tandem mass spectrometry(LC-ESI-MS/MS)was used to identify the primary structure of its active fragments. The amino acid sequence of the short peptide was LPPYLP(corn peptides-6,CPs-6). The anti-tumor activity of the synthesized CPs-6 peptide on HepG2 cells was evaluated by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide(MTT)assay which demonstrated that CPs-6 could inhibit proliferation of HepG2 cells,and the toxicity of CPs-6 to normal liver cells(L-02)cells was low.
keywords: corn active peptide(CPs-6) HepG2 inhibition hepatoma cells active peptides separation and purification of peptides
文章编号:202112002 中图分类号: 文献标志码:
基金项目:国家自然科学基金青年基金项目(32001818)
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