Monoclonal Antibody to TAG-72 / CA72.4 (Tumor-Associated Glycoprotein) (Clone : B72.3)

Recognizes an oncofetal antigen of 220kDa, identified as a tumor-associated glycoprotein (TAG-72) with properties of a mucin. This MAb defines the mucin-carried sialylated-Tn epitope. TAG-72 is usually expressed by adenocarcinomas, but is negative in mesotheliomas. Studies have reported that this antibody has 80% sensitivity and 93% specificity for pulmonary adenocarcinoma. Therefore, TAG-72 is a useful marker to distinguish between mesothelioma and adenocarcinoma. However, false positive reactions can occur so results must be interpreted with the utmost caution. This antibody may be useful in the differentiation of non-small cell carcinomas from small cell carcinomas of the lung. The combined use of anti-TAG-72 and anti-GCDFP-15 is valuable in the diagnosis of apocrine carcinoma.

Product Specifications

Product Name Alternative

C25A1.3

Gene Name

Tag-72

Gene ID

182875

UniProt

Q9XVS1

Host

Mouse

Reactivity

Human

Immunogen

Membrane-enriched fraction of a human breast carcinoma liver metastasis

Target Antigen

TAG-72 / CA72.4 (Tumor-Associated Glycoprotein)

Clonality

Monoclonal

Clone

B72.3

Applications

IHC, FACS, IF

Purification

Affinity Chromatography

Format

Purified

Components

100 μg in 500 μl PBS containing 0.05% BSA and 0.05% sodium azide. Sodium azide is highly toxic.

Storage Conditions

Store the antibody at 4°C; stable for 6 months. For long-term storage; store at -20°C. Avoid repeated freeze and thaw cycles.

Applications Notes

Flow Cytometry (1-2ug/million cells) ; Immunofluorescence (1-2ug/ml) ; Immunohistochemistry (Formalin-fixed) (1-2ug/ml for 30 minutes at RT) (Staining of formalin-fixed tissues requires heating tissue sections in 10mM Tris with 1mM EDTA, pH 9.0, for 45 min at 95°C followed by cooling at RT for 20 minutes)