title: Ectopic production in serum-free media of the common alpha subunit of the glycoprotein hormones.
abstract: The HeLa-S3 cell strain grown in Ham's F12 medium supplemented with insulin, transferrin, cortisol, epidermal growth factor, fibroblast growth factor, and trace elements, but containing no serum, continued to produce the common alpha-subunit of the glycoprotein hormones for the 10 d study. The amounts of alpha-subunit secreted into the medium during the first 4 d were indistinguishable from those in F12 medium supplemented with 10% fetal bovine serum. During the remainder of the experiment the amounts of alpha-subunit reached 50 to 80% those in the serum-supplemented medium.
mesh_terms: D001769:Blood; D002455:Cell Division; D006063:Chorionic Gonadotropin / Q000096:biosynthesis*; D003470:Culture Media; D005640:Follicle Stimulating Hormone / Q000096:biosynthesis*; D015292:Glycoprotein Hormones, alpha Subunit; D006023:Glycoproteins / Q000096:biosynthesis*; D006133:Growth Substances / Q000494:pharmacology; D006367:HeLa Cells; D006728:Hormones / Q000494:pharmacology; D006801:Humans; D007700:Kinetics; D007986:Luteinizing Hormone / Q000096:biosynthesis*; D010446:Peptide Fragments / Q000096:biosynthesis*; D013972:Thyrotropin / Q000096:biosynthesis*
chemical_list: D006063:Chorionic Gonadotropin; D003470:Culture Media; D015292:Glycoprotein Hormones, alpha Subunit; D006023:Glycoproteins; D006133:Growth Substances; D006728:Hormones; D010446:Peptide Fragments; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone; D013972:Thyrotropin