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• W1975563821 abstract "CXCL8 is a potent chemokine, inducing focal adhesion kinase (FAK) phosphorylation, and migration via a FAK-mediated pathway. Since, unlike growth factors, chemokines directly control integrins and cytoskeleton rearrangements, we determined whether these elements regulate CXCL8-induced FAK phosphorylation. The analysis intentionally dissociated between the CXCL8 receptors CXCR1 and CXCR2. In both CXCR1- and CXCR2-expressing cells, actin and microtubules were required for CXCL8-induced FAK phosphorylation, and CXCL8-induced cell spreading was accompanied by concordant re-localization of FAK with actin and β-tubulin. The phosphorylation of five FAK sites depended on intact actin filaments and microtubules. While in CXCR2-expressing cells FAK phosphorylation was adhesion-dependent and was stimulated by fibronectin, in CXCR1-expressing cells FAK phosphorylation was adhesion-independent. Of note, even in the absence of integrin stimulation, the CXCL8-induced phosphorylation of FAK in CXCR1-expressing cells required cytoskeletal elements. CXCL8-induced migration in both cell types was highly reliant on actin filaments, but only the migration of CXCR1-expressing cells was fully dependent on microtubules. Overall, several aspects of CXCL8-induced FAK phosphorylation and migration are regulated in a receptor-specific manner. These observations lay the basis for future investigation of the equilibrium between CXCR1 and CXCR2 in cells expressing both receptors together, such as neutrophils, endothelial cells and tumor cells." @default.
• W1975563821 created "2016-06-24" @default.
• W1975563821 creator A5027919413 @default.
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• W1975563821 creator A5076905582 @default.
• W1975563821 creator A5087285832 @default.
• W1975563821 date "2006-01-07" @default.
• W1975563821 modified "2023-10-01" @default.
• W1975563821 title "CXCL8-induced FAK phosphorylation via CXCR1 and CXCR2: Cytoskeleton- and integrin-related mechanisms converge with FAK regulatory pathways in a receptor-specific manner" @default.
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• W1975563821 doi "https://doi.org/10.1016/j.cyto.2005.11.006" @default.
• W1975563821 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16406804" @default.
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