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• W1596248898 endingPage "8059" @default.
• W1596248898 startingPage "8053" @default.
• W1596248898 abstract "The laminin-based nonapeptide Cys-Asp-Pro-Gly-Tyr-Ile-Gly-Ser-Arg (CDPGYIGSR) and pentapeptide Tyr-Ile-Gly-Ser-Arg (YIGSR) have been previously demonstrated to support the attachment of several cell types and to competitively bind to the 67-kDa high affinity laminin receptor. Cell attachment, but not spreading, on substrates containing adsorbed CDPGYIGSR or YIGSR was observed. In this report we describe YIGSR-mediated attachment and spreading of a wide variety of cell types. GYIGSRY promoted cell spreading and stress fiber formation when it was covalently immobilized through the amino-terminal Gly residue, used as a spacer arm. Spreading was not observed when adsorbed YIGSR peptide was used. Functionally blocking antiserum directed against the 67-kDa and related laminin-binding proteins blocked human foreskin fibroblast (HFF) spreading, but not attachment, on covalently grafted GYIGSRY substrates. However, functionally blocking antisera directed against the vitronectin receptor, integrin alpha v beta 3, and the fibronectin receptor, integrin alpha 5 beta 1, did not affect HFF spreading on these substrates. When HFFs spread on these substrates, the 67-kDa laminin receptor co-localized with the cytoplasmic proteins alpha-actinin and vinculin into discrete structures. These results suggest that the adhesion ligand YIGSR is solely sufficient for cell spreading when it is conformationally constrained by covalent attachment to a solid substrate, at least when attached via its amino terminus. Furthermore, the role of the 67-kDa laminin receptor in recognition of this ligand and mediating cell attachment is confirmed in this study. This report also provides the first evidence for direct or indirect association of this receptor with vinculin and alpha-actinin when YIGSR-mediated cell spreading occurs." @default.
• W1596248898 created "2016-06-24" @default.
• W1596248898 creator A5019089312 @default.
• W1596248898 creator A5031517705 @default.
• W1596248898 creator A5039662983 @default.
• W1596248898 date "1993-04-01" @default.
• W1596248898 modified "2023-10-18" @default.
• W1596248898 title "Covalently immobilized laminin peptide Tyr-Ile-Gly-Ser-Arg (YIGSR) supports cell spreading and co-localization of the 67-kilodalton laminin receptor with alpha-actinin and vinculin." @default.
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• W1596248898 doi "https://doi.org/10.1016/s0021-9258(18)53062-3" @default.
• W1596248898 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/8463322" @default.
• W1596248898 hasPublicationYear "1993" @default.
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