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).
Applications:
Suitable for use inFlow Cytometry, Western Blot, Immunocytochemistry. Other applications not tested.
Recommended Dilution:
Western Blot: 1:5000
Immunocytochemistry: 1:100-250
Flow Cytometry: 1:30
Optimal dilutions to be determined by the researcher.
Storage and Stability:
May be stored at 4 degrees C for short-term only. For long-term storage, store at -20 degrees C. Aliquots are stable for at least 12 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Manufactured incorporating RabMAb(R) technology under Epitomics US patents, No 5,675,063 and 7,429,487, owned by Abcam.
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