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- W2123082102 abstract "We have recently shown that calmodulin antagonist W13 interferes with the trafficking of the epidermal growth factor receptor (EGFR) and regulates the mitogen-activated protein kinase (MAPK) signaling pathway. In the present study, we demonstrate that in cells in which calmodulin is inhibited, protein kinase C (PKC) inhibitors rapidly restore EGFR and transferrin trafficking through the recycling compartment, although onward transport to the degradative pathway remains arrested. Analysis of PKC isoforms reveals that inhibition of PKCdelta with rottlerin or its down-modulation by using small interfering RNA is specifically responsible for the release of the W13 blockage of EGFR trafficking from early endosomes. The use of the inhibitor Gö 6976, specific for conventional PKCs (alpha, beta, and gamma), or expression of dominant-negative forms of PKClambda, zeta, or epsilon did not restore the effects of W13. Furthermore, in cells treated with W13 and rottlerin, we observed a recovery of brefeldin A tubulation, as well as transport of dextran-fluorescein isothiocyanate toward the late endocytic compartment. These results demonstrate a specific interplay between calmodulin and PKCdelta in the regulation of the morphology of and trafficking from the early endocytic compartment." @default.
- W2123082102 created "2016-06-24" @default.
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- W2123082102 creator A5055866805 @default.
- W2123082102 creator A5073726679 @default.
- W2123082102 date "2004-11-01" @default.
- W2123082102 modified "2023-10-17" @default.
- W2123082102 title "Protein KinaseCδ-Calmodulin Crosstalk Regulates Epidermal Growth Factor Receptor Exit from Early Endosomes" @default.
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- W2123082102 doi "https://doi.org/10.1091/mbc.e04-02-0127" @default.
- W2123082102 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/524735" @default.
- W2123082102 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15342779" @default.
- W2123082102 hasPublicationYear "2004" @default.
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