食品科学

• 营养卫生 • 上一篇    下一篇

Caco-2细胞模型构建及抗高血压肽VPP和IPP小肠吸收机制研究

祝 倩,郭宇星,潘道东,曾小群,孙杨赢,周慧敏   

  1. 1.南京师范大学金陵女子学院,江苏 南京 210097;2.宁波大学海洋学院,浙江 宁波 315211
  • 出版日期:2014-08-15 发布日期:2014-08-25

Establishment of Caco-2 Cell Model and Intestinal Absorption Mechanism of the Antihypertensive Peptides Val-Pro-Pro and Ile-Pro-Pro

ZHU Qian, GUO Yu-xing, PAN Dao-dong, ZENG Xiao-qun, SUN Yang-ying, ZHOU Hui-min   

  1. 1. Ginling College, Nanjing Normal University, Nanjing 210097, China;
    2. School of Marine Sciences, Ningbo University, Ningbo 315211, China
  • Online:2014-08-15 Published:2014-08-25

摘要:

Caco-2细胞模型为小肠内皮细胞转运模型,本实验构建Caco-2细胞模型并研究抗高血压肽Val-Pro-Pro(VPP)和Ile-Pro-Pro(IPP)的小肠吸收机制。从细胞形态、电阻值和荧光素钠透过率等方面验证了Caco-2细胞模型;通过转运时间、肽浓度、吸收抑制剂和促进剂比较了VPP和IPP的小肠转运途径及外排机制。结果表明:构建的Caco-2细胞模型可用于VPP和IPP的模拟小肠吸收机制研究;VPP和IPP的小肠转运途径是旁路转运,VPP和IPP都存在外排泵的作用,IPP外排作用没有VPP大,所以生物利用度高于VPP。

关键词: 抗高血压肽, Val-Pro-Pro, Ile-Pro-Pro, Caco-2细胞, 转运

Abstract:

The Caco-2 cell model, an intestinal endothelial model for transport study, was established to study the absorption
mechanism of the antihypertensive peptides, Val-Pro-Pro (VPP) and Ile-Pro-Pro (IPP). The Caco-2 cell model was
evaluated by morphological features, transepithelial electrical resistance and the transmittance of fluorescein sodium. We
comparatively investigated the effects of transport time, peptide concentration, enhancers and inhibitors on the transport
pathways and efflux mechanisms of VPP and IPP. The results showed the established Caco-2 cell model could be used
to study the intestinal absorption of VPP and IPP. Paracellular diffusion was suggested to be the main mechanism for the
absorption of the two antihypertensive peptides. The transports of both peptides were influenced by the efflux pump. The
efflux affected VPP more than IPP. Thus, IPP showed higher bioavailability.

Key words: antihypertensive, Val-Pro-Pro, Ile-Pro-Pro, Caco-2 cell, transport

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