Migration Stimulating Factor (MSF) promotes fibroblast migration by inhibiting AKT |
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| Authors: | Ian R Ellis Sarah J Jones Yvonne Lindsay Go Ohe Ana M Schor Seth L Schor Nick R Leslie |
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| Institution: | 1. Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy;2. IRCCS, Centro Cardiologico Monzino, Milan, Italy;3. IRCCS, Humanitas Research Foundation, Bruzzano, Milan, Italy;4. IRCCS Multimedica, Milan, Italy;5. SISA Centre for the Study of Atherosclerosis, Bassini Hospital, Cinisello B, Milan, Italy;6. William Harvey Research Institute, Barts and The London School of Medicine & Dentistry, Queen Mary University, London, UK |
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| Abstract: | The protein kinase AKT is activated strongly by many motogenic growth factors, yet has recently been shown capable of inhibiting migration in several cell types. Here we report that treatment with Migration Stimulating Factor (MSF), a truncated form of fibronectin that promotes the migration of many cell types, inhibits AKT activity in human fibroblasts and endothelial cells. In fibroblasts, treatment with either MSF or the AKT inhibitor, Akti-1/2, stimulated migration into 3D collagen gels to a similar extent and the effects of Akti-1/2 on migration could be blocked by the expression of an inhibitor-resistant mutant, AKT1 W80A. These data indicate that MSF promotes fibroblast migration, at least in part, by inhibiting the activity of AKT. |
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