胃癌细胞血管生成拟态的形态学及机制研究
Morphology and mechanism research of gastric cancer vasculogenic mimicry
张婧 1高青1
作者信息
- 1. 重庆医科大学附属第一医院消化内科,重庆,400016
- 折叠
摘要
目的:血管生成拟态(Vasculogenic mimicry,VM)是近年来发现的一种全新的肿瘤微循环模式.本研究通过体外三维培养的方式对胃癌细胞血管生成拟态进行形态学的研究,并探讨其可能的分子机制.方法:体外三维培养SGC-7901细胞,观察其是否可以形成血管生成拟态.免疫细胞化法检测参与血管生成拟态形成的胃癌细胞中MMP-2与MT1-MMP的表达水平.观察PI3K信号通路抑制剂对MMP-2和MT1-MMP的表达水平及对胃癌细胞血管生成拟态的影响.结果:胃癌细胞SGC-7901在体外三维培养条件下能够形成血管生成拟态.参与血管生成拟态的癌细胞中MMP-2与MT1-MMP高表达.PI3K信号通路抑制剂能够抑制MMP-2与MT1-MMP的表达,导致SGC-7901细胞血管生成拟态的能力明显降低.结论:体外三维培养时胃癌细胞SGC-7901具有形成血管生成拟态的能力.PI3K信号通路的抑制剂可以抑制胃癌血管生成拟态的形成,其机制之一可能是通过抑制MMP-2与MT1-MMP的表达.
Abstract
Objective:Vasculogenic mimicry(VM) is a new microcireulation form of tumor cells which found resent years. This research observed whether gastric cancer SGC-7901 cells can form vasculogenic mimicry in 3-dimentional culture and had a primer examination on its mechanism. Methods: Put SGC-7901 cells in 3-dimentinal culture and observed if it could form vasculogenic mimicry. Immunohischemistry tested the MMP-2 and MT1-MMP level of 3-dimentional cultured SGC-7901 cells. Observe the effect of PI3K way inhibitor on MMP-2、MT1-MMP level and VM formation of gastric cancer cells. Results: Gastric cancer SGC-7901 cells can form VM in 3-demintional culture. MMP-2 and MT1-MMP highly expressed in gastric cancer cells that took part in the tube structure. P13K way inhibitor decreased MT1-MMPmRNA and MMP-2 protein level and inhibited VM formation of SGC-7901 cells. Conclusion:Gastric cancer SGC-7901 cells had the ability to form vasculogenic mimicry in vitro 3-dimentional culture.One of its mechanism was probably through decreasing MT1-MMP and MMP-2 level.
关键词
胃癌细胞/血管生成拟态/发生机制Key words
Gastric tumor/Vasculogenic mimicry/Mechanism引用本文复制引用
出版年
2008
NETL
NSTL
维普
万方数据