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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

HB-EGF/HER-1 signaling in bone marrow mesenchymal stem cells: inducing cell expansion and reversibly preventing multilineage differentiation.

Epidermal growth factor receptor-1 (EGFR-1/HER-1/ErbB-1) regulates proliferation and cell fate during epidermal development. HER-1 is activated by several EGF-family ligands including heparin- binding epidermal growth factor-like growth factor (HB-EGF), a mitogenic and chemotactic molecule that participates in tissue repair, tumor growth, and other tissue-modeling phenomena, such as angiogenesis and fibrogenesis. We found that mesenchymal stem cells (MSCs), the precursors of different mesenchymal tissues with a role in processes in which HB-EGF is often involved, normally express HER-1, but not HB-EGF itself. Under the effect of HB-EGF, MSCs proliferate more rapidly and persistently, without undergoing spontaneous differentiation. This effect occurs in a dose-dependent fashion, and is specific, direct, and HER-1 mediated, as it is inhibited by anti-HER-1 and anti-HB-EGF blocking antibodies. Moreover, HB-EGF reversibly prevents adipogenic, osteogenic, and chondrogenic differentiation induced with specific media. These data show that HB-EGF/HER-1 signaling is relevant to MSC biology, by regulating both proliferation and differentiation.[1]

References

  1. HB-EGF/HER-1 signaling in bone marrow mesenchymal stem cells: inducing cell expansion and reversibly preventing multilineage differentiation. Krampera, M., Pasini, A., Rigo, A., Scupoli, M.T., Tecchio, C., Malpeli, G., Scarpa, A., Dazzi, F., Pizzolo, G., Vinante, F. Blood (2005) [Pubmed]
 
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