Abstract:
:Swiss 3T3 cells can be made quiescent at low density by plating in medium MCDB 402 supplemented with dexamethasone (DEX), insulin (INS) and bovine plasma fibronectin (BPFn) for 3 days. One hour after stimulation of these cells by fibroblast growth factor (FGF), an increase in the rate of protein synthesis can be measured. Nine hours after stimulation by FGF, the rate at which the cells enter S phase increases abruptly. This increased rate of entry into S phase is delayed when methylamine is added to the medium before FGF treatment and later removed. The delay is only for the amount of time that the cells are exposed to methylamine, with no subsequent effect on the rate at which the cells enter S. The early increase in rate of protein synthesis caused by FGF is not blocked by concentrations of methylamine that stop the progression of FGF-treated cells toward S phase. The assay system that has been developed provides a means for detailed analysis of the prereplicative phase of Swiss 3T3 cells in a serum-free medium and in the absence of density-dependent inhibition.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Shipley GD,Ham RGdoi
10.1016/0014-4827(83)90128-3subject
Has Abstractpub_date
1983-07-01 00:00:00pages
261-70issue
2eissn
0014-4827issn
1090-2422journal_volume
146pub_type
杂志文章abstract::Mechanical stress is an important regulator of chondrocyte functions but the mechanisms by which chondrocytes sense mechanical signals are unknown. Receptors for matrix molecules are likely involved in the mechanical signaling. In the first part of this study we identified integrins with affinity for the cartilage-spe...
journal_title:Experimental cell research
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journal_title:Experimental cell research
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journal_title:Experimental cell research
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journal_title:Experimental cell research
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journal_title:Experimental cell research
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