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- W2023000448 abstract "Of the approximately 15 laminin trimers described in mammals, laminin-1 expression seems to be largely limited to epithelial basement membranes. It appears early during epithelial morphogenesis in most tissues of the embryo, and remains present as a major epithelial laminin in some adult tissues. Previous organ culture studies with embryonic tissues have suggested that laminin-1 is important for epithelial development. Recent data using genetically manipulated embryonic stem (ES) cells grown as embryoid bodies provide strong support for the view of a specific role of laminin-1 in epithelial morphogenesis. One common consequence of genetic ablation of FGF signaling, beta1-integrin or laminin gamma1 chain expression in ES cells is the absence of laminin-1, which correlates with failure of BM assembly and epiblast differentiation. Partial but distinct rescue of epiblast differentiation has been achieved in all three mutants by exogenously added laminin-1. Laminin-1 contains several biologically active modules, but several are found in beta1 or gamma1 chains shared by at least 11 laminins. However, the carboxytermini of the alpha chains contain five laminin globular (LG) modules, distinct for each alpha chain. There is increasing evidence for a particular role of alpha1LG4 binding to its receptors for epithelial tubulogenesis. The biological roles of this and other domains of laminin-1 are currently being explored by genetic means. The pathways controlling laminin-1 synthesis have remained largely unknown, but recent advances raise the possibility that laminin-1 and collagen IV synthesis can be regulated by pro-survival kinases of the protein kinase B/Akt family." @default.
- W2023000448 created "2016-06-24" @default.
- W2023000448 creator A5000979295 @default.
- W2023000448 creator A5006485581 @default.
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- W2023000448 date "2003-03-01" @default.
- W2023000448 modified "2023-10-16" @default.
- W2023000448 title "Expression and biological role of laminin-1" @default.
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- W2023000448 doi "https://doi.org/10.1016/s0945-053x(03)00015-5" @default.
- W2023000448 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/12714040" @default.
- W2023000448 hasPublicationYear "2003" @default.
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