Christoffersen C T, Tornqvist H, Vlahos C J, Bucchini D, Jami J, De Meyts P, Joshi R L
Hagedorn Research Institute, Department of Molecular Signalling, Gentofte, Denmark.
Biochem Biophys Res Commun. 1998 May 19;246(2):426-30. doi: 10.1006/bbrc.1998.8637.
The ability of insulin and insulin-like growth factors (IGF-I and IGF-II) to induce differentiation of 3T3-F442A cells into adipocytes was examined at various hormone concentrations. Both insulin and the IGFs promoted differentiation at concentrations compatible with binding to their cognate receptors, suggesting that both insulin and IGF-I receptors are capable of promoting this differentiation. Adipocyte conversion of 3T3-F442A cells was completely blocked in the presence of LY294002, a specific inhibitor of PI 3-kinase, indicating that PI 3-kinase activity plays a crucial role in the initial signalling events that trigger this differentiation process.
