Abstract：
:Keratinocyte growth factor (KGF/FGF7) and fibroblast growth factor 10 (FGF10/KGF2) regulate keratinocyte proliferation and differentiation by binding to the tyrosine kinase KGF receptor (KGFR). KGF induces keratinocyte motility and cytoskeletal rearrangement, whereas a direct role of FGF10 on keratinocyte migration is not clearly established. Here we analyzed the motogenic activity of FGF10 and KGF on human keratinocytes. Migration assays and immunofluorescence of actin cytoskeleton revealed that FGF10 is less efficient than KGF in promoting migration and exerts a delayed effect in inducing lamellipodia and ruffles formation. Both growth factors promoted phosphorylation and subsequent membrane translocation of cortactin, an F-actin binding protein involved in cell migration; however, FGF10-induced cortactin phosphorylation was reduced, more transient and delayed with respect to that promoted by KGF. Cortactin phosphorylation induced by both growth factors was Src-dependent, while its membrane translocation and cell migration were blocked by either Src and PI3K inhibitors, suggesting that both pathways are involved in KGF- and FGF10-dependent motility. Furthermore, siRNA-mediated downregulation of cortactin inhibited KGF- and FGF10-induced migration. These results indicate that cortactin is involved in keratinocyte migration promoted by both KGF and FGF10.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Ceccarelli S,Cardinali G,Aspite N,Picardo M,Marchese C,Torrisi MR,Mancini Pdoi
10.1016/j.yexcr.2007.03.013subject
Has Abstractpub_date
2007-05-15 00:00:00pages
1758-77issue
9eissn
0014-4827issn
1090-2422pii
S0014-4827(07)00121-8journal_volume
313pub_type
杂志文章abstract：:The enzyme endothelial Nitric Oxide Synthase (eNOS) is involved in key physiological and pathological processes, including cell motility and apoptosis. It is widely believed that at the cell surface eNOS is localized in caveolae, where caveolin-1 negatively regulates its activity, however, there are still uncertaintie...
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pub_type： 杂志文章,评审
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journal_title：Experimental cell research
pub_type： 杂志文章
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journal_title：Experimental cell research
pub_type： 杂志文章
doi：10.1006/excr.1995.1214
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journal_title：Experimental cell research
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journal_title：Experimental cell research
pub_type： 杂志文章
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abstract：:We have previously demonstrated that transient blocking of DNA synthesis with drugs such as 1-beta-D-arabinofuranosylcytosine results in some segments of the chromosomal DNA being replicated more than once in a single cell cycle. One explanation for this phenomenon might be that it is due to a perturbation of the cell...
journal_title：Experimental cell research
pub_type： 杂志文章
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abstract：:Apoptosis is characterized by typical morphological changes and most frequently fragmentation of DNA into oligonucleosome-size fragments. In order to investigate whether an alteration in the mechanisms involved in the process of apoptosis could contribute to cellular resistance, induction of apoptosis was studied in a...
journal_title：Experimental cell research
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doi：10.1006/excr.1995.1148
更新日期：1995-05-01 00:00:00
