Abstract
The exact role profilin plays in cell migration is not clear. In this study, we have evaluated the effect of overexpression of profilin on the migration of breast cancer cells. Overexpression was carried out by stably expressing GFP-profilin in BT474 cells. It was observed that even a moderate level of overexpression of profilin significantly impaired the ability of BT474 cells to spread on fibronectin-coated substrate and migrate in response to EGF. GFP-profilin expressing cells also showed increased resistance to detachment in response to trypsin and increased tyrosine phosphorylation of focal adhesion kinase (FAK) and paxillin compared to the parental and GFP-expressing (control) cell lines. These results suggest that perturbation of profilin levels may offer a good strategy for controlling the metastatic potential of breast cancer cells.
Copyright 2004 Wiley-Liss, Inc.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Actins / metabolism
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Breast Neoplasms / genetics
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Breast Neoplasms / metabolism
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Breast Neoplasms / pathology
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Cell Line, Tumor
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Cell Movement / drug effects
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Cell Movement / physiology*
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Contractile Proteins / genetics
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Contractile Proteins / metabolism*
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Epidermal Growth Factor / pharmacology
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Focal Adhesion Kinase 1
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Focal Adhesion Protein-Tyrosine Kinases
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Green Fluorescent Proteins
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Humans
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Luminescent Proteins / genetics
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Luminescent Proteins / metabolism
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Microfilament Proteins / genetics
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Microfilament Proteins / metabolism*
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Phosphoproteins / metabolism
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Phosphotyrosine / metabolism
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Profilins
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Protein-Tyrosine Kinases / metabolism
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Recombinant Fusion Proteins / genetics
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Recombinant Fusion Proteins / metabolism
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Transfection
Substances
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Actins
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Contractile Proteins
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Luminescent Proteins
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Microfilament Proteins
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PFN1 protein, human
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Phosphoproteins
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Profilins
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Recombinant Fusion Proteins
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Green Fluorescent Proteins
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Phosphotyrosine
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Epidermal Growth Factor
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Protein-Tyrosine Kinases
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Focal Adhesion Kinase 1
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Focal Adhesion Protein-Tyrosine Kinases
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PTK2 protein, human