食品科学 ›› 2018, Vol. 39 ›› Issue (5): 166-172.doi: 10.7506/spkx1002-6630-201805025

• 营养卫生 • 上一篇    下一篇

罗非鱼头长链碱的分离纯化及抗肿瘤活性

于曼曼1,2,夏光华1,李 川1,申铉日1,2,*   

  1. 1.海南大学食品学院,海南 海口 570228;2.海南大学 热带生物资源教育部重点实验室,海南 海口 570228
  • 出版日期:2018-03-15 发布日期:2018-03-14
  • 基金资助:
    国家自然科学基金青年科学基金项目(31601531);海南省重点研发计划项目(ZDYF2017104);海南大学科研启动基金项目(KYQD1609)

Extraction, Purification and Anti-Tumor Activity in Vivo of Long Chain Bases from Tilapia Head

YU Manman1,2, XIA Guanghua1, LI Chuan1, SHEN Xuanri1,2,*   

  1. 1. College of Food Science and Technology, Hainan University, Haikou 570228, China; 2. Key Laboratory of Tropical Biological Resource of Ministry of Education, Hainan University, Haikou 570228, China
  • Online:2018-03-15 Published:2018-03-14

摘要: 目的:探讨罗非鱼头长链碱(tilapia head long chain bases,TH-LCB)的提取纯化方法及其体外抗肿瘤 活性。方法:以罗非鱼头为原料,采用有机溶剂提取法,提取纯化得到TH-LCB;采用四甲基偶氮唑盐法、细胞 凋亡率和细胞周期的测定和蛋白免疫印迹等方法,探讨了TH-LCB对人白血病K562细胞的增殖抑制作用和凋亡诱 导作用。结果:TH-LCB可显著抑制人K562细胞的增殖,TH-LCB作用24、48 h后的半数抑制浓度分别为42.207、 39.494 μg/mL;随着TH-LCB质量浓度的增加,细胞凋亡率逐渐增加,sub-G0/G1峰(凋亡峰)也随之升高,表明 TH-LCB通过诱导细胞凋亡来抑制K562细胞增殖;Western blot结果表明,TH-LCB可提高细胞内Caspase-3的蛋白 表达量,呈剂量依赖效应。结论:TH-LCB可通过诱导K562细胞凋亡抑制其增殖,这一过程可能与Caspase-3的 激活有关。

关键词: 罗非鱼头长链碱, K562细胞, 细胞凋亡, 细胞周期, Caspase-3

Abstract: Purpose: To investigate the extraction and purification of long chain bases from tilapia head (TH-LCB) and to assess their anti-tumor activity in vivo. Methods: The long chain bases were extracted into an organic solvent and purified. In addition, the anti-tumor activity of TH-LCB was detected by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay, Annexin V assay, cell cycle analysis and Western blot. Results: TH-LCB significantly reduced the viability of K562 cells in a dose-dependent manner. After treatment with TH-LCB for 24 and 48 h, its half maximal inhibitory concentration were 42.207 and 39.494 μg/mL, respectively. TH-LCB increased the apoptotic rate, indicating that it reduced cell viability by inducing apoptosis in K562 cells. Flow cytometric analysis confirmed that TH-LCB caused accumulation cells in the sub-G0/G1 phase, being an indicative of apoptosis. Furthermore, TH-LCB also significantly increased the expression of caspase-3 in a dose-dependent manner. Conclusion: TH-LCB can inhibit the proliferation of K562 cells through inducing apoptosis, which may be correlated with the activation of caspase-3.

Key words: long chain bases from tilapia head, K562 cell, apoptosis, cell cycle, caspase-3

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