Human CA125/MUC16 Antibody

Catalog # Availability Size / Price Qty
MAB56091-100
MAB56091-SP

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Detection of CA125/MUC16 in HeLa Human Cell Line by Flow Cytometry.
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Human CA125/MUC16 Antibody Summary

Species Reactivity
Human
Specificity
Detects human CA125/MUC-16 in direct ELISAs.
Source
Monoclonal Mouse IgG1 Clone # 986811
Purification
Protein A or G purified from ascites
Immunogen
Chinese hamster ovary cell line CHO-derived recombinant human CA125/MUC-16
Met13360-Gln14347 (Met13472Thr & Gln13957Lys)
Accession # NP_078966.2
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Label
Unconjugated

Applications

Recommended Concentration
Sample
Flow Cytometry
0.25 µL/106 cells
See below
Immunohistochemistry
5-25 µg/mL
See below
CyTOF-ready
Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.
 

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Data Examples

Flow Cytometry Detection of CA125/MUC16 antibody in HeLa Human Cell Line antibody by Flow Cytometry. View Larger

Detection of CA125/MUC16 in HeLa Human Cell Line by Flow Cytometry. HeLa human cervical cancer cell line was stained with Mouse Anti-Human CA125/MUC16 Monoclonal Antibody (Catalog # MAB56091, filled histogram) or isotype control antibody (Catalog # MAB002, open histogram), followed by Allophycocyanin-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # F0101B). View our protocol for Staining Membrane-associated Proteins.

Immunohistochemistry CA125/MUC16 antibody in Human Ovarian Cancer Tissue by Immunohistochemistry (IHC-P). View Larger

CA125/MUC16 in Human Ovarian Cancer Tissue. Ovarian Cancer Antigen CA125 (CA125/MUC16) was detected in immersion fixed paraffin-embedded sections of human ovarian cancer tissue using Mouse Anti-Human CA125/MUC16 Monoclonal Antibody (Catalog # MAB56091) at 5 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Mouse IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC001). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to cell surfaces. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Preparation and Storage

Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Availability
Size / Price
Qty
RB01
Shipping
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: CA125/MUC16

MUC16, also known as the CA125 antigen, is a mucin protein that may be found in type I transmembrane or secreted forms that are used monitor the progress of epithelial ovarian cancer therapy (1, 2). Expression of isoforms, proteolytic cleavage, and heavy N- and O- linked glycosylation produce forms of human MUC16 that can vary from 1148 to 22152 amino acids (aa) in length and 200 - 5000 kDa in size (1, 2). The 22152 aa form contains ser/thr-rich N-terminal tandem repeats, 4 LRR (Leu-rich repeat) domains, 56 SEA (sea urchin sperm protein, enterokinase and agrin) domains, a transmembrane domain, and a 31 aa cytoplasmic domain that includes a tyrosine phosphorylation site (1-4). SEA domains are ~120 aa in length, contain conserved residues including potential O-glycosylation sites and a pair of cysteines, and are often found in transmembrane mucins (3). The protein produced by R&D Systems represents aa 13360-14347 of the full sequence and includes the last 6 SEA domains. It shares 68% aa identity with canine MUC16. MUC16 is over-expressed by tumor cells including ovarian and mesothelial cancers (5). The transmembrane form can adhere to mesothelin in the peritoneum, facilitating metastasis of ovarian cancer to the peritoneal cavity (5-7). MUC16 also binds galectin-1 on immune cells and enhances its expression on tumor cells (8). MUC16-expressing tumors adhere to NK cells, down-regulate CD16 and suppress NK response, which may promote immune evasion (9, 10). MUC16 is also cyclically expressed in the endometrium and may contribute to immune privilege during pregnancy (10). In the eye, MUC16 and other mucins protect the cornea and keep it hydrated. It is altered on the conjunctival epithelium of patients with non-Sjogren dry eye syndrome (11).

References
  1. Yin, B. W. T. K. O. Lloyd, 2001, J. Biol. Chem. 276:27371.
  2. Maeda, T. et al. (2004) J. Biol. Chem. 279:13174.
  3. Fendrick, J. L. et al. (1997) Tumour Biol. 18:278.
  4. Swissprot accession Q8WXI7.
  5. Kaneko, O. et al. (2009) J. Biol. Chem. 284:3739.
  6. Rump, A. et al. (2004) J. Biol. Chem. 279:9190.
  7. Gubbels, J. A. A. et al. (2006) Mol. Cancer 5:50.
  8. Seelenmeyer, C. et al. (2003) J. Cell Sci. 116:1305.
  9. Patankar, M. S. et al. (2005) Gynecol. Oncol. 99:704.
  10. Belisle, J. A. et al. (2007) Immunology 122:418.
  11. Blalock, T. D. et al. (2007) Invest. Ophthalmol. Vis. Sci. 48:4509.
Long Name
Ovarian Cancer Antigen CA125
Entrez Gene IDs
94025 (Human)
Alternate Names
CA125 ovarian cancer antigen; CA125; CA-125; CA125MUC-16; FLJ14303; MUC16; mucin 16, cell surface associated; mucin-16; Ovarian cancer-related tumor marker CA125; Ovarian carcinoma antigen CA125

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