JCB logo
Accuri Cytometers
  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents

This Article
Right arrow Full Text
Right arrow Full Text (PDF, 6393K)
Right arrow PPT slides of all figures
Right arrow Alert me when this article is cited
Right arrow Citation Map
Services
Right arrow Email this article
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new content in the JCB
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Ilic, D.
Right arrow Articles by Damsky, C. H.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Ilic, D.
Right arrow Articles by Damsky, C. H.
Right arrowPubmed/NCBI databases
*Substance via MeSH
Social Bookmarking
 Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Facebook   Add to Reddit   Add to Technorati   Add to Twitter  
What's this?

© The Rockefeller University Press, 0021-9525/1998//547 $5.00
The Journal of Cell Biology, Volume 143, Number 2, , 1998 547-560


Regular Articles

Extracellular Matrix Survival Signals Transduced by Focal Adhesion Kinase Suppress p53-mediated Apoptosis



Dusko Ilic*, Eduardo A.C. Almeida*, David D. Schlaepfer§, Paul Dazin{ddagger}, Shinichi Aizawa||, and Caroline H. Damsky*

* Departments of Stomatology and Anatomy, {ddagger} Howard Hughes Medical Institute, University of California San Francisco, San Francisco, California 94143-0512; § The Scripps Research Institute, Department of Immunology, La Jolla, California 92037; and || Department of Morphogenesis, Institute of Molecular Embryology and Genetics, Kumamoto University School of Medicine, Kumamoto 860, Japan

In many malignant cells, both the anchorage requirement for survival and the function of the p53 tumor suppressor gene are subverted. These effects are consistent with the hypothesis that survival signals from extracellular matrix (ECM) suppress a p53-regulated cell death pathway. We report that survival signals from fibronectin are transduced by the focal adhesion kinase (FAK). If FAK or the correct ECM is absent, cells enter apoptosis through a p53-dependent pathway activated by protein kinase C {lambda}/{iota} and cytosolic phospholipase A2. This pathway is suppressible by dominant-negative p53 and Bcl2 but not CrmA. Upon inactivation of p53, cells survive even if they lack matrix signals or FAK. This is the first report that p53 monitors survival signals from ECM/FAK in anchorage- dependent cells.

Key Words: fibronectin • survival • FAK • p53 • apoptosis



Abbreviations used in this paper: cPLA2, cytosolic phospholipase A2; DiI-Ac-LDL, DiI-labeled acetylated low-density lipoprotein; E, embryonic day; EB, embryoid bodies; ECM, extracellular matrix; ES, embryoid stem cells; FAK, focal adhesion kinase; FAT, focal adhesion targeting; FRNK, FAK-related nonkinase; GFP, green fluorescent protein; GSE, genetic suppressor element; HA, hemagglutinin; PECAM-1, platelet–endothelial cell adhesion molecule; PI3K, phosphatidylinositol-3'-kinase; PKC, protein kinase C; PLC-{gamma}, phospholipase C-{gamma}; pmT, polyoma middle T; RSF, rabbit synovial fibroblasts; TNF-{alpha}, tumor necrosis factor-{alpha}; TUNEL, terminal deoxynucleotidyl transferase (TdT)-mediated dUTP nick end labeling.

Dusko Ili c and Eduardo A.C. Almeida contributed equally to this work.

Address all correspondence to Caroline H. Damsky, Ph.D, University of California San Francisco, 513 Parnassus Avenue, HSW-604, San Francisco, CA 94143-0512. Tel.: (415) 476-8922. Fax: (415) 502-7338. E-mail: damsky{at}cgl.ucsf.edu



Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Facebook Facebook   Add to Reddit Reddit   Add to Technorati Technorati   Add to Twitter Twitter    What's this?


This article has been cited by other articles:



  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents