General description

Anti-CAM 5.2 is a mouse monoclonal antibody that was generated by using the human colorectal carcinoma cell line HT24. Anti-CAM 5.2 is not technically a pan-keratin antibody because its reactivity has been reported to be restricted primarily to a few keratins. However, since the few keratins are widely expressed in formalin-fixed, paraffin-embedded tissues, especially in simple and glandular epithelia, this antibody can be successfully used as a reliable marker for neoplasms of epithelial differentiation. Anti-CAM 5.2 reacts with the majority of epithelial tumors, including lung, liver, pancreas, GI tract, breast, genitourinary system, female reproductive organs and some endocrine organs.Hepatocellular carcinoma is targeted by anti-CAM 5.2, but not by pan-cytokeratin AE1/AE3 antibody.1 Adrenal cortical carcinomas frequently do not react with anti-CAM 5.2.Sebaceous carcinoma, squamous cell carcinoma, and basal cell carcinoma may show an overlapping morphology. Anti-CAM 5.2 is useful to discriminate among them. Literature indicates no reactivity by anti-CAM 5.2 for squamous cell carcinoma while sebaceous carcinoma and basal cell carcinoma show 73% and 44% immunoreactivity respectively.Similar to other broad-spectrum keratin antibodies, such as the AE1/AE3 antibody cocktail, anti-CAM 5.2 may stain astrocytic tumors, but the positivity reported for this tumor cross-reactivity is lower than with anti-AE1/AE3.

Legal Information

Cell Marque is a trademark of Sigma-Aldrich Co. LLC

Linkage

Cytokeratin (CAM 5.2) Positive Control Slides, Product No. 452S, are available for immunohistochemistry (formalin-fixed, paraffin-embedded sections).

Other Notes

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Physical form

Solution in Tris Buffer, pH 7.3-7.7, with 1% BSA and ﹤0.1% Sodium Azide

Preparation Note

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