JCB logo
BD Biosciences
  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents

This Article
Right arrow Full Text
Right arrow PDF (Full Text)
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 Orford, K.
Right arrow Articles by Byers, S. W.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Orford, K.
Right arrow Articles by Byers, S. W.
Social Bookmarking
 Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati  
What's this?
J. Cell Biol., Volume 146, Number 4, August 23, 1999 855-868
Copyright © 1999 by The Rockefeller University Press.

Exogenous Expression of ß-Catenin Regulates Contact Inhibition, Anchorage-independent Growth, Anoikis, and Radiation-induced Cell Cycle Arrest

Keith Orforda, Caroline C. Orforda, and Stephen W. Byersa
a The Lombardi Cancer Center and the Department of Cell Biology, Georgetown University School of Medicine, Washington, District of Columbia 20007

Correspondence to: Stephen W. Byers, E415 The Research Building, GUMC, 3970 Reservoir Road N.W., Washington, DC 20007. Tel:(202) 687-1813 Fax:(202) 687-7505 E-mail:byerss{at}gunet.georgetown.edu.

ß-Catenin is an important regulator of cell–cell adhesion and embryonic development that associates with and regulates the function of the LEF/TCF family of transcription factors. Mutations of ß-catenin and the tumor suppressor gene, adenomatous polyposis coli, occur in human cancers, but it is not known if, and by what mechanism, increased ß-catenin causes cellular transformation. This study demonstrates that modest overexpression of ß-catenin in a normal epithelial cell results in cellular transformation. These cells form colonies in soft agar, survive in suspension, and continue to proliferate at high cell density and following {gamma}-irradiation. Endogenous cytoplasmic ß-catenin levels and signaling activity were also found to oscillate during the cell cycle. Taken together, these data demonstrate that ß-catenin functions as an oncogene by promoting the G1 to S phase transition and protecting cells from suspension-induced apoptosis (anoikis).

Key Words: ß-catenin, oncogene, cell cycle, anoikis, apoptosis


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 Reddit Reddit   Add to Technorati Technorati    What's this?


This article has been cited by other articles:



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