Cortactin Overexpression Lysate

HEK293T cells in 10-cm dishes were transiently transfected with a non-lipid polymer transfection reagent specially designed and manufactured for large volume DNA transfection. Transfected cells were cultured for 48hrs before collection. The cells were lysed in modified RIPA buffer (25mM Tris-HCl pH7.6, 150mM NaCl, 1% NP-40, 1mM EDTA, 1xProteinase inhibitor cocktail mix, 1mM PMSF and 1mM Na3VO4, and then centrifuged to clarify the lysate. Protein concentration was measured by BCA protein assay kit.

Immunocytochemistry reveals that in epithelial cells, the human cortactin protein is localized mainly in the cytoplasm and, to a very low extent, in protruding leading lamellae of the cell. However, in carcinoma cells that constitutively overexpress cortactin accumulates in the podosome-like adherens junctions associated with the cell-substratum contact sites. Overexpression and concomitant accumulation of the Cortactin protein in the cell-substratum contact sites might, therefore, contribute to the invasive potential of these tumor cells (1). In cells derived from breast carcinomas and squamous carcinomas of the head and neck, DNA amplification of a particular tyrosine kinase substrate region results in overexpression of cortactin. Overexpression is accompanied by a partial redistribution of cortactin from the cytoplasm into cell-matrix contact sites (2).

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Lysates are guaranteed for 6 months from date of receipt.

Array NBP2-04417

• Cortactin Antibodies
• Cortactin Lysates
• Cortactin Proteins