Lamellipodia in invasion

被引:112
作者
Condeelis, JS
Wyckoff, JB
Bailly, M
Pestell, R
Lawrence, D
Backer, J
Segall, JE
机构
[1] Albert Einstein Coll Med, Dept Anat & Struct Biol, Bronx, NY 10461 USA
[2] Albert Einstein Coll Med, Intravital Imaging Program, Analyt Imaging Facil, Bronx, NY 10461 USA
[3] Albert Einstein Coll Med, Albert Einstein Canc Comprehens Ctr, Bronx, NY 10461 USA
基金
美国国家卫生研究院;
关键词
lamellipod; Arp2/3; PI; 3-kinase; cofilin; EGF receptor;
D O I
10.1006/scbi.2000.0363
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
In vivo imaging of GFP-labeled metastatic tumor cells reveals cell orientation towards blood vessels. Orientation of tumor cells during chemotactic responses to ligands such as EGF begins with lamellipod extension. Evaluation of some of the downstream events in lamellipod extension indicates: (1) plasma membrane distribution other EGF receptor is uniform bur internalized receptor accumulates on the side of the cell closest to the source of EGF; (2) the alpha p110 isoform of PI-3 kinase is required; ann (3) protrusion of the lamellipod relies upon the combined actions of the Arp2/3 complex and cofilin for generation of filamentous actin.
引用
收藏
页码:119 / 128
页数:10
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