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C1801

Sigma-Aldrich

Monoclonal Anti-Cytokeratin, pan antibody produced in mouse

clone PCK-26, ascites fluid

Synonym(s):

Monoclonal Anti-pan-Cytokeratin

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About This Item

UNSPSC Code:
12352203
NACRES:
NA.41

biological source

mouse

Quality Level

conjugate

unconjugated

antibody form

ascites fluid

antibody product type

primary antibodies

clone

PCK-26, monoclonal

contains

15 mM sodium azide

species reactivity

human, chicken, snake, hamster, pig, goat, feline, bovine, carp, rat, rabbit, canine, lizard, sheep, mouse, guinea pig

technique(s)

immunohistochemistry (formalin-fixed, paraffin-embedded sections): 1:300
immunohistochemistry (frozen sections): suitable
indirect immunofluorescence: 1:300 using protease-idgested, formalin-fixed, paraffin-embedded sections of human or animal tissues
western blot: suitable

isotype

IgG1

shipped in

dry ice

storage temp.

−20°C

target post-translational modification

unmodified

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General description

Cytokeratin belongs to the member of intermediate filament (IF) protein family.
Cytokeratins, a group comprising at least 29 different proteins are characteristic of epithelial and trichocytic cells. Cytokeratin 1, 5, 6, and 8 are members of the type II neutral-to-basic subfamily. Cytokeratin peptide 1 (68 kDa) is expressed together with cytokeratin 10 in the suprabasal cell layers or the differentiation compartment of the epidermis. Its expression increases with epidermal maturation and it is modified post-translationally in the terminally differentiated keratinocytes of the stratum corneum. Cytokeratin peptide 5 (58 kDa) is the primary type II keratin in stratified epithelia while cytokeratin type 8 (52 kDa) is a major type II keratin in simple epithelia. Cytokeratin 6 (56 kDa) is a "hyperproliferation" cytokeratin expressed in tissues with natural or pathological high turnover.

Specificity

The antibody recognizes an epitope located on the Type II cytokeratins 1, 5, 6, and 8. PCK-26 is a broad spectrum antibody which reacts specifically with a variety of normal, reactive, and neoplastic epithelial tissues. The antibody reacts with simple, cornifying, and non-cornifying squamous epithelia and pseudostratified epithelia.

Immunogen

cytokeratin from human epidermis.

Application

Monoclonal antibodies to cytokeratins are specific markers of epithelial cell differentiation and have been widely used as tools in tumor identification and classification. Monoclonal Anti-Cytokeratin, pan is a broadly reactive group-type antibody which recognizes an epitope present in most human epithelial tissues. It facilitates the typing of normal, metaplastic and neoplastic cells and it may aid in the discrimination of carcinomas and non-epithelial tumors such as sarcomas, lymphomas and neural tumors. It is also useful in detecting micro-metastases in lymph nodes and other tissues and for determining the origin of poorly differentiated tumors.
Monoclonal Anti-Cytokeratin, pan may be used for the localization of cytokeratins using various immunochemical assays such as immunoblotting, dot blotting, and immunohistochemstry (immunofluorescence and immunoenzymatic staining).
A minimum antibody titer of 1:300 was determined by indirect immunofluorescent staining of protease digested, formalin-fixed, paraffin-embedded sections of human or animal tissues.

Biochem/physiol Actions

Pan-cytokeratin along with the expression of CXCR4, may be a prognostic biomarker for non-small cell lung cancer (NSCLC).

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Christopher W Helsen et al.
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The epithelial-mesenchymal transition (EMT) has been postulated as a mechanism by which cancer cells acquire the invasive and stem-like traits necessary for distant metastasis. However, direct in vivo evidence for the role of EMT in the formation of cancer stem-like
Clinical utility of cytokeratins as tumor markers
Barak V, et al.
Clinical Biochemistry, 37(7), 529-540 (2004)
Lei Lv et al.
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Most ovarian cancers originate from the ovarian surface epithelium and are characterized by aneuploid karyotypes. Aneuploidy, a consequence of chromosome instability, is an early event during the development of ovarian cancers. However, how aneuploid cells are evolved from normal diploid
Erika M Wall et al.
Cancer research, 67(13), 6442-6450 (2007-07-10)
Immunotherapy of cancer can lead to the selection of antigen loss variants, which provides strong rationale to target oncogenes that are essential for tumor growth or viability. To investigate this concept, we tagged the HER2/neu oncogene with epitopes from ovalbumin

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