RT Journal Article T1 Epidermal Growth Factor Impairs Palatal Shelf Adhesion and Fusion in the T gf-β3 Null Mutant A1 Barrio Asensio, María Del Carmen A1 Río Sevilla, Aurora Del A1 Murillo González, Jorge Alfonso A1 Maldonado Bautista, Estela A1 López Gordillo, Yamila A1 Paradas Lara, Irene A1 Hernandes, Luzmarina A1 Catón Vázquez, Francisco Javier A1 Martínez Álvarez, María Concepción AB The cleft palate presented by transforming growth factor-β3 (Tgf-β3 ) null mutant mice is caused by altered palatal shelf adhesion, cell proliferation, epithelial-to-mesenchymal transformation and cell death. The expression of epidermal growth factor (EGF), transforming growth factor-β1 ( Tgf-β1 ) and muscle segment homeobox-1 (Msx-1) is modified in the palates of these knockout mice, and the cell proliferation defect is caused by the change in EGF expression. In this study, we aimed to determine whether this change in EGF expression has any effect on the other mechanisms altered in Tgf-β 3 knockout mouse palates. We tested the effect of inhibiting EGF activity in vitro in the knockout palates via the addition of Tyrphostin AG 1478. We also investigated possible interactions between EGF, Tgf-β 1 and Msx-1 in Tgf-β 3 null mouse palate cultures. The results show that the inhibition of EGF activity in Tgf-β 3 null mouse palate cultures improves palatal shelf adhesion and fusion, with a particular effect on cell death, and restores the normal distribution pattern of Msx-1 in the palatal esenchyme. Inhibition of TGF-β 1 does not affect either EGF or Msx-1 expression. PB Karger SN 1422-6405 YR 2014 FD 2014 LK https://hdl.handle.net/20.500.14352/35215 UL https://hdl.handle.net/20.500.14352/35215 LA eng NO Barrio Asensio, M. C., Rio Sevilla, A., Murillo González, J. A. et al. «Epidermal Growth Factor Impairs Palatal Shelf Adhesion and Fusion in the Tgf-β3 Null Mutant». Cells Tissues Organs, vol. 199, n.o 2-3, mayo de 2014, pp. 201-11. Silverchair, https://doi.org/10.1159/000362227. NO Ministerio de Economía, Comercio y Empresa (España) NO Universidad Complutense NO Comunidad Autónoma de Madrid NO Banco Santander DS Docta Complutense RD 29 sept 2024