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• W3023965518 endingPage "e03922" @default.
• W3023965518 startingPage "e03922" @default.
• W3023965518 abstract "The growth factor receptor bound protein 7 (Grb7) is a Ca2+-dependent calmodulin (CaM)-binding adaptor protein implicated, among other functions, in cell proliferation, migration and tumor-associated angiogenesis. The goal of this study was to determine whether a peptide based on the CaM binding site of Grb7 disrupts cellular processes, relevant for the malignancy of tumor cells, in which this adaptor protein is implicated. We designed synthetic myristoylated and non-myristoylated peptides corresponding to the CaM-binding domain of human Grb7 with the sequence 243RKLWKRFFCFLRRS256 and a variant peptide with the mutated sequence RKLERFFCFLRRE (W246E-ΔK247-S256E). The two non-myristoylated peptides bind dansyl-CaM with higher efficiency in the presence than in the absence of Ca2+ and they enter into the cell, as tested with 5(6)-carboxytetramethylrhodamine (TAMRA)-labeled peptides. The myristoylated and non-myristoylated peptides inhibit the proliferation, migration and invasiveness of A431 tumor cells while they enhance their adhesion to the substrate. The myristoylated peptides have stronger inhibitory effect than the non-myristoylated counterparts, in agreement with their expected higher cell-permeant capacity. The myristoylated and non-myristoylated W246E-ΔK247-S256E mutant peptide has a lesser inhibitory effect on cell proliferation as compared to the wild-type peptide. We also demonstrated that the myristoylated peptides were more efficient than the CaM antagonist N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide (W-7) inhibiting cell migration and equally efficient inhibiting cell proliferation." @default.
• W3023965518 created "2020-05-13" @default.
• W3023965518 creator A5011027532 @default.
• W3023965518 creator A5070438350 @default.
• W3023965518 creator A5081011378 @default.
• W3023965518 date "2020-05-01" @default.
• W3023965518 modified "2023-10-17" @default.
• W3023965518 title "Grb7-derived calmodulin-binding peptides inhibit proliferation, migration and invasiveness of tumor cells while they enhance attachment to the substrate" @default.
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• W3023965518 doi "https://doi.org/10.1016/j.heliyon.2020.e03922" @default.
• W3023965518 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7215194" @default.
• W3023965518 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32420488" @default.
• W3023965518 hasPublicationYear "2020" @default.
• W3023965518 type Work @default.

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