JCB logo
PeproTech: Your source for Cell Biology Research Reagents
  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents

This Article
Right arrow Full Text (PDF, 873K)
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 Clegg, C. H.
Right arrow Articles by Hauschka, S. D.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Clegg, C. H.
Right arrow Articles by Hauschka, S. D.
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?

The Journal of Cell Biology, Vol 105, 949-956, Copyright © 1987 by The Rockefeller University Press


ARTICLES

Growth factor control of skeletal muscle differentiation: commitment to terminal differentiation occurs in G1 phase and is repressed by fibroblast growth factor

CH Clegg, TA Linkhart, BB Olwin and SD Hauschka

Analysis of MM14 mouse myoblasts demonstrates that terminal differentiation is repressed by pure preparations of both acidic and basic fibroblast growth factor (FGF). Basic FGF is approximately 30- fold more potent than acidic FGF and it exhibits half maximal activity in clonal assays at 0.03 ng/ml (2 pM). FGF repression occurs only during the G1 phase of the cell cycle by a mechanism that appears to be independent of ongoing cell proliferation. When exponentially growing myoblasts are deprived of FGF, cells become postmitotic within 2-3 h, express muscle-specific proteins within 6-7 h, and commence fusion within 12-14 h. Although expression of these three terminal differentiation phenotypes occurs at different times, all are initiated by a single regulatory "commitment" event in G1. The entire population commits to terminal differentiation within 12.5 h of FGF removal as all cells complete the cell cycle and move into G1. Differentiation does not require a new round of DNA synthesis. Comparison of MM14 behavior with other myoblast types suggests a general model for skeletal muscle development in which specific growth factors serve the dual role of stimulating myoblast proliferation and directly repressing terminal differentiation.
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