|Cancer||Cell death||Cell cycle||Cytoskeleton||Exo/endocytosis||Differentiation||Division||Organelles||Signalling||Stem cells||Trafficking|
Cell Biology International (1993) 17, 387398 (Printed in Great Britain)
Effect of TGF-Alpha on growth of normal human breast epithelial cells in serum-free primary culture using 3-dimensional collagen gels.
Ramasamy Sakthivel, Maha Hamdan, Jason Yang, Raphael C. Guzman and Satyabrata Nandi
Cancer Research Laboratory, Department of Molecular and Cell Biology, 491 Life Sciences Addition, University of California, Berkeley, CA 94720.
The mitogenic effect of TGF-alpha, acidic-FGF, basic-FGF and lithium on normal human breast epithelial cells was studied in a collagen gel culture system using a serum-free 1:1 mixture of Ham's F12 and DME medium containing insulin, cholera toxin and bovine serum albumin. TGF-alpha elicited a strong mitogenic response in a dose dependent manner. Addition of cortisol to TGF-alpha stimulated growth over and above that achieved with TGF-alpha alone. A consistent observation has been the effect of a combination of TGF-alpha and cortisol on growth stimulation of normal human breast epithelial cells resulting in 3-12 fold growth after 11-13 days in culture. Acidic-FGF, basic-FGF and lithium were not growth promoting.