The C-terminal domain of focal adhesion kinase reduces the tumor cell invasiveness in chondrosarcoma cell lines

被引:12
作者
Lee, JW
Kim, YH
Park, HB
Xu, LH
Cance, WG
Block, JA
Scully, SP
机构
[1] Mayo Clin & Mayo Fdn, Rochester, MN 55905 USA
[2] Yonsei Univ, Coll Med, Dept Orthopaed Surg, Seoul 120749, South Korea
[3] Univ N Carolina, Lineberger Comprehens Canc Ctr, Dept Surg, Chapel Hill, NC 27599 USA
[4] Rush Presbyterian St Lukes Med Ctr, Dept Rheumatol & Biochem, Chicago, IL 60612 USA
关键词
chondrosarcoma; invasion; adhesion; focal adhesion kinase;
D O I
10.1016/S0736-0266(03)00101-3
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Human chondrosarcoma is a malignancy that has no effective systemic therapy, making the interruption of the metastatic cascade critical to enhance patient survival. The processes of local invasion and metastases share similar mechanisms at a cellular level. Focal adhesion kinase (FAK) has been implicated in local invasion of malignant tumor cells. In the current manuscript we examine the effect of FAK inhibition on cell attachment to extracellular matrix (ECM) and in vitro invasion. Bovine articular chondrocytes and two human chondrosarcoma cell lines were utilized to examine FAK activity in tumor cell invasiveness. Endogenous FAK activity was inhibited by adenoviral transfection with the C-terminal domain of FAK. This inhibition resulted from decreased FAK phosphorylation, while FAK expression remained unchanged. Inhibition of FAK phosphorylation and hence its activity lead to decreased cell adhesion to Type II collagen and decreased cell invasiveness. These effects were not due to changes in integrin expression, indicating that the inhibition was the result of disruption of outside: in signaling. There are three important aspects to these results. The first is that interruption of transmembrane signaling can affect cell attachment. The second is that in chondrosarcoma, cell differentiation correlates with FAK expression and metastatic potential. Thirdly, that cell invasiveness correlates with FAK activity and implies a mechanistic role for this molecular complex in local invasion and metastasis. (C) 2003 Orthopaedic Research Society. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:1071 / 1080
页数:10
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