食品科学

• 工艺技术 •    下一篇

新型花色苷衍生物oxovitisin A制备条件优化及其体外抑制癌细胞增殖活性

吴 闹,王静祎,张 倩,郭 莹,李书艺,何 毅,祝振洲,何静仁   

  1. 武汉轻工大学食品科学与工程学院,湖北 武汉 430023
  • 出版日期:2016-08-25 发布日期:2016-08-30
  • 通讯作者: 何静仁
  • 基金资助:

    国家自然科学基金面上项目(31371727);国际科技合作与交流专项(2014DFG32310);
    湖北省自然科学基金项目(2014CFB891);湖北省科技支撑计划项目(2015BHE015)

Optimized Preparation of New Anthocyanin Derivative Oxovitisin A and Its Antiproliferation Effect on Cancer Cells in vitro

WU Nao, WANG Jingyi, ZHANG Qian, GUO Ying, LI Shuyi, HE Yi, ZHU Zhenzhou, HE Jingren   

  1. College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
  • Online:2016-08-25 Published:2016-08-30
  • Contact: HE Jingren

摘要:

以植物花色苷为原料,通过羧基吡喃花色苷形成及微氧化两步反应法制备出具有非氧鎓离子结构和内酯型吡喃环结构的吡喃酮型花色苷衍生物(oxovitisin A),进行了反应温度、pH值、反应介质乙醇体积分数和反应时间影响oxovitisin A生成量的单因素试验,正交试验优化得到oxovitisin A的最佳制备条件。高效液相色谱监测反应过程,高效液相色谱-二极管阵列检测-串联离子阱多级质谱法对反应产物进行定量和定性分析。利用“罗丹明B蛋白染色法”考察了oxovitisin A以及不同结构的吡喃花色苷衍生物(羧基吡喃花色苷、甲基吡喃花色苷)、前体花色苷(锦葵花色苷)的体外抗癌细胞增殖活性。结果表明:以1.0 mg/mL的羧基吡喃花色苷为原料,oxovitisin A的最佳制备条件是pH 3.6、反应温度45 ℃、乙醇体积分数20%、反应时间21 d,各因素对oxovitisin A得率影响的大小次序为pH值>反应温度>反应时间>乙醇体积分数。高效液相色谱-串联质谱结合多级质谱裂解分析表明,反应的主要产物是oxovitisin A,反应第21天得率为26.59%。抗癌细胞活性实验结果表明,oxovitisin A能显著抑制人肠癌细胞(Caco-2)和人乳腺癌细胞(MCF-7)细胞增殖,IC50分别为(238.8±24.6)、(85.7±9)μg/mL,抑制作用明显强于羧基吡喃花色苷和甲基吡喃花色苷。

关键词: 花色苷衍生物, oxovitisin A, 正交试验, 高效液相色谱-串联质谱法, 抗肿瘤活性

Abstract:

A novel polyphenolic compound, named oxovitisin, with unique lactone pyranone ring and non-oxonium
structures was prepared. In this study, oxovitisin A was synthesized by two-step reactions in micro-oxygenation system
by using carboxypyranoanthocyanins (vitisin A) as a precursor, which was formed from pyruvic acid and anthocyanins.
The preparation conditions of oxovitisin A, namely temperature, pH, ethanol and reaction time, were optimized using
combination of single factor and orthogonal array experiments. High performance liquid chromatography-with diodearray
detection (HPLC-DAD) was used to monitor the reaction process and the main adduct was qualitatively and
quantitatively analyzed by HPLC-DAD combined with electron ionization tandem mass spectrometry (HPLC-DAD-EIMS/
MS). The sulforhodamine B (SRB) assay was employed to evaluate the anti-tumor effects of oxovitisin A, vitisin A,
methyl-pyranoanthocyanin and malvidin-3-O-glucoside against Caco-2 and MCF-7 cells in vitro. The results showed that
the optimal preparation conditions were found to be reaction at 45 ℃ for 21 d with 20% ethanol acidified to pH 3.6 using
1.0 mg/mL of vitisin A. The effects of four important variables on oxovitisin A yield followed the decreasing order: pH >
reaction temperature > reaction duration > ethanol concentration. The main reaction product was confirmed by HPLCMS/
MS to be oxovitisin A with a yield of 26.59% after 21 d. The SRB assay showed that oxovitisin A displayed obvious
inhibitory effect on the proliferation of Caco-2 and MCF-7 cells with an IC50 value of (238.8 ± 24.6) and (85.7 ± 9) μg/mL,
respectively, obviously stronger than that of vitisin A and methyl-pyranoanthocyanin.

Key words: anthocyanin derivatives, oxovitisin A, orthogonal array experiment, HPLC-MS/MS, anti-tumor effect

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