Cytokeratin, pan (Pan Keratin)

Keratin/cytokeratin is a pan cytokeratin (also known as pan keratin) antibody cocktail that detects cytokeratins 1-8, 10, 14-16 and 19 (reviewed in Ordonez, 2013). The cocktail is an optimized mixture of two different monoclonal antibody clones, each clone detects a subset of high and low molecular weight cytokeratins: 10, 14-16, and 19; detects 1-8. A key advantage of the pan cytokeratin antibody cocktail stain is that a broader spectrum of cytokeratins can be detected compared to using each clone alone. The pan cytokeratin antibody cocktail is a well known broad spectrum immunohistochemical epithelial marker for screening for epithelial differentiation in tumors and their metastases. Most carcinomas have been reported to stain positive, and the antibody can help confirm or rule out the epithelial nature of a poorly differentiated tumor. Positive pan cytokeratin staining with the antibody in the lymph node (Nikura, 2007) or bone marrow ((Berg, 2007) can be an indication of metastatic carcinoma. The pan cytokeratin antibody has also been used to identify residual tumor post-treatment (Azumi, 2006), assess the depth of cancerous invasion (Alexander-Sefre, 2004) and predict survival outcome (Wiedswang, 2004). Negative pan cytokeratin staining patterns can suggest non-epithelial components associated with a carcinoma. For example, ductal lavage foam cells from breast carcinoma patients did not stain with the antibody (Krishnamurthy, 2002). Foam cells are apparently of macrophage origin and hence pan cytokeratin cocktail negative. The pan cytokeratin antibody staining patterns have been extensively documented in epithelium and numerous tumor types, dating back to 1982 (Woodcock-Mitchell) when the clones were first developed. As such, researchers are encouraged to survey the published literature for additional information about pan cytokeratin positive and negative staining tumors as well as in normal tissue.\n\nApplications: \nSuitable for use in Western Blot and Immunohistochemistry. Other applications not tested.\n\nRecommended Dilution:\nWestern Blot: 0.1-1ug/ml\nImmunohistochemistry(Paraffin): 1:200-1:400\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

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SPECIFICATIONS

Catalog Number

138538

Size

20ug

Applications

IHC, WB

Hosts

Mouse

Reactivities

Hum

Form

Supplied as a liquid in PBS, 0.05% BSA, 0.05% sodium azide.

P Type

Mab

Purity

Purified by Protein G affinity chromatography.

Isotype

IgG1,k

References

1. Woodcock et al. J Cell Biol 95: 580, 1982. 2. Tseng et al. Cell 30: 361, 1982. 3. Sun et al. J Invest Dermatol 81: 109s, 1983. 4. Spagnolo et al. Am J Clin pathol 84: 697, 1985.

Additional Info

Recognizes human pan cytokeratin.