Cytokeratin 8/18 Antibody Cocktail

SKU: orb248628

Description

Cytokeratins are a group of proteins expressed in pairs in keratinized and non-keratinized epithelial tissue. Cytokeratin 8 (CK8) belongs to the type II (or B or basic) subfamily of high molecular weight cytokeratins and exists in combination with cytokeratin 18 (CK18). The pair are normally seen in simple but not stratified epithelial cells. This antibody cocktail recognizes all simple epithelia including glandular epithelium, for example thyroid, female breast, gastrointestinal tract, respiratory tract, and urogenital tract including transitional epithelium. All adenocarcinomas and most squamous carcinomas are positive but keratinizing squamous carcinomas are usually negative. Immunohistochemical staining with this antibody cocktail is indistinguishable from that obtained with monoclonal antibody 5D3.

Images & Validation

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Tested Applications	FACS, IF, IHC-P, WB
Dilution range	Flow cytometry: 1-2ug/10^6 cells,Immunofluorescence: 1-2ug/ml,Western blot: 1-2ug/ml,Immunohistochemistry (FFPE): 1-2ug/ml for 30 min at RT
Reactivity	Human
Application Notes	Differences in protocols and secondaries may require the Cytokeratin 8/18 antibody to be titered for optimal performance.1. FFPE staining requires boiling tissue sections in pH 9 10mM Tris with 1mM EDTA for 10-20 min followed by cooling at RT for 20 minutes.2. The prediluted format is supplied in a dropper bottle and is optimized for use in IHC. After epitope retrieval step (if required), drip mAb solution onto the tissue section and incubate at RT for 30 min.

Key Properties

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Antibody Type	Primary Antibody
Host	Mouse
Clonality	Monoclonal
Isotype	Mouse IgG1, kappa
Clone No.	K8.8 + DC10
Immunogen	A keratin preparation from a human carcinoma (K8.8) and PMC-42 human breast carcinoma cells (DC10) were used as the immunogen for this Cytokeratin 8/18 antibody cocktail.
Purification	Protein G affinity chromatography
Conjugation	Unconjugated

Storage & Handling

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Storage	Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
Buffer/Preservatives	1X PBS, pH 7.4
Disclaimer	For research use only

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IHC staining of FFPE human ovarian cancer with Cytokeratin 8/18 antibody (K8.8 + DC10).

IHC staining of FFPE human colon carcinoma with Cytokeratin 8/18 antibody (K8.8 + DC10).

Western blot testing of HeLa cell lysate using Cytokeratin 8/18 antibody cocktail at 1 ug/ml. Observed molecualr weight: 46~50 kDa.

SDS-PAGE Analysis of Purified, BSA-Free Cytokeratin 8/18 Antibody Cocktail (clones K8.8 + DC10). Confirmation of Integrity and Purity of the Antibody.

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Protocol Information

Western Blot (IB, immunoblot)

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IHC-P

Immunohistochemistry Paraffin

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FACS

Fluorescence-Activated Cell Sorting (FC, Flow cytometry)

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Immunofluorescence

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