HER2 / ErbB2 Recombinant Rabbit Monoclonal Antibody [PD00-99]
HER-2 (also called HER-2/neu, c-erbB2, ERBB2 or neu) is a transmembrane receptor tyrosine kinase. HER-2 is a proto-oncogene, i.e. its activation causes malignant transformation and increases the malignant potential (cell proliferation, invasiveness etc.) of the cells. Amplification of HER-2 gene invariably leads to over-expression of its protein product. The magnitude of over- expression is usually 10-100 folds or even more. Over-expressed HER-2 protein disturbs the HER-receptor family signalling networks, i.e. signalling mediated via EGFR receptor, HER-3 and HER-4. In tumours, HER-2 is over-expressed in 15-25% of primary breast cancers. Metastases usually have the same amplification status as the primary tumours. HER-2 amplification and over-expression are typical features of hormone receptor negative, rapidly growing histologic grade 2-3 tumours. Of the histologic types, Paget’s disease is almost invariably HER-2 positive, whereas only a small minority of lobular and tubular carcinomas shows HER-2 amplification. HER-2 amplification and over-expression can also be found in intestinal type gastric and gastroesophageal carcinomas, ovarian carcinomas, high grade endometrial carcinomas and some salivary duct tumours. Low-level copy number increases have been found also in rare cases of lung tumours. Because of its central importance in breast cancer therapy selection, standardization of HER-2 IHC assays and slide interpretation are of outmost clinical and economical importance.
Product Specifications
Product Name Alternative
Abbreviation
Swiss Prot
P04626 Human
Cellular Locus
Cell membrane, Nucleus, Cytoplasm.
Host
Rabbit
Species Reactivity
Human
Immunogen
Recombinant fragment within Human ErbB2/ HER2 aa 500-650.
Isotype
IgG
Conjugation
Non-conjugated
Type
Recombinant Rabbit monoclonal Antibody
Applications
WB, IHC-P, IF-Tissue
Positive Control
SK-Br-3 cell lysates, human breast carcinoma tissue.
Concentration
1 mg/mL
Dilution
WB: 1:1,000 ;IHC-P: 1:4,000 ;IF-Tissue: 1:200
Purity
Protein A affinity purified.
Form
Liquid
Buffer
PBS (pH7.4), 0.1% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.
Molecular Weight
Predicted band size: 138 kDa
Storage Conditions
Store at +4°C after thawing. Aliquot store at -20°C. Avoid repeated freeze/thaw cycles.
Recombinant Antibody
Yes
CAS Number
9000-83-3
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