Carbonic Anhydrase IX/CA9 Antibody (CA9/781)

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-45237

Novus Biologicals, part of Bio-Techne

Key Product Details

Species Reactivity

Human, Equine

Applications

Immunohistochemistry, Immunohistochemistry-Paraffin, Western Blot

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG2b Kappa Clone # CA9/781

Concentration

0.2 mg/ml

View all Carbonic Anhydrase IX/CA9 Antibodies »

Product Specifications

Immunogen

Recombinant human Carbonic Anhydrase IX/CA9 protein (Uniprot: Q16790)

Localization

Cell surface and cytoplasmic

Marker

Renal Cell Marker

Clonality

Monoclonal

Host

Mouse

Isotype

IgG2b Kappa

Theoretical MW

55 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Description

200ug/ml of antibody purified from Bioreactor Concentrate by Protein A or G. Prepared in 10 mM PBS with 0.05% BSA & 0.05% azide. Also available WITHOUT BSA & azide at 1.0 mg/ml. (NBP3-11591)

Antibody with azide - store at 2 to 8C. Antibody without azide - store at -20 to -80C.

Scientific Data Images for Carbonic Anhydrase IX/CA9 Antibody (CA9/781)

Immunohistochemistry-Paraffin: Carbonic Anhydrase IX/CA9 Antibody (CA9/781) [NBP2-45237]

Immunohistochemistry-Paraffin: Carbonic Anhydrase IX/CA9 Antibody (CA9/781) [NBP2-45237]

Immunohistochemistry-Paraffin: Carbonic Anhydrase IX/CA9 Antibody (CA9/781) [NBP2-45237] - Human Renal Cell Carcinoma stained with CAIX Monoclonal Antibody (CA9/781).
Western Blot: Carbonic Anhydrase IX/CA9 Antibody (CA9/781) [NBP2-45237]

Western Blot: Carbonic Anhydrase IX/CA9 Antibody (CA9/781) [NBP2-45237]

Western Blot: Carbonic Anhydrase IX/CA9 Antibody (CA9/781) [NBP2-45237] - Analysis of HCT116 Cell Lysate using CAIX Monoclonal Antibody (CA9/781). As indicated by the arrow, a specific band was detected at a molecular weight of approximately 50 kDa.

Applications for Carbonic Anhydrase IX/CA9 Antibody (CA9/781)

Application
Recommended Usage

Immunohistochemistry-Paraffin

1-2 ug/ml

Western Blot

1-2 ug/ml
Application Notes
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 95C followed by cooling at RT for 20 minutes.
Optimal dilution for a specific application should be determined.

Formulation, Preparation, and Storage

Purification

Protein A or G purified

Formulation

10 mM PBS with 0.05% BSA

Preservative

0.05% Sodium Azide

Concentration

0.2 mg/ml

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C.

Background: Carbonic Anhydrase IX/CA9

Carbonic anhydrase alpha, isozyme IX, belongs to a family of zinc-containing metalloproteins which hydrate carbon dioxide to generate bicarbonate ions and protons (1). This main catalytic function allows carbonic anhydrase IX to participate in cellular pH regulation. The large family of carbonic anhydrase metalloproteins includes three major classes which have been identified based on sequence and structure analysis. The alpha class is a monomer found in mammals. The beta class may occur as a dimer, tetramer, hexamer or octamer and is found in plants, algae, and bacteria. Lastly, the gamma class is a trimer found in bacteria and represents the most ancient carbonic anhydrase. These three classes of carbonic anhydrase enzymes lack sequence or structural similarities, but all share a conserved active site zinc atom (1).

Carbonic anhydrase IX (theoretical molecular weight 50kDa) belongs to the monomeric alpha class and is a single pass-transmembrane protein with two extracellular domains which serve catalytic and cell adhesion functions (2, 3). By cooperating with sodium bicarbonate cotransporters (NBC), lactate and proton exporting monocarboxylic acid transporters (MCT), and a sodium/hydrogen exchanger (NHE), carbonic anhydrase IX is involved in pH regulation across the cell membrane. This functional property protects cancer cells from intracellular acidification and partly explains the role of carbonic anhydrase IX in cancer cell survival and proliferation. In contrast, the pH regulating activity of carbonic anhydrase IX induces extracellular acidification, which has been implicated in epithelial to mesenchymal transition (EMT) and promoting cancer invasion. Carbonic anhydrase IX is frequently overexpressed in cancer cells (e.g., colorectal-, breast-, lung-carcinoma and brain tumors), an effect promoted by hypoxia within the tumor microenvironment (4). An exception are tumors carrying pVHL inactivating mutations, such as clear cell renal cell carcinoma (ccRCC), where HIF-alpha is stabilized due to dysfunctional proteasomal targeting and can induce HRE (Hypoxia Response Element) containing genes even under physiological normoxia (5). Carbonic anhydrase IX may be detected by immunostaining in tumors, which is found in association with necrotic tissue and metastatic cells. Because the expression of carbonic anhydrase IX correlates with both tumor grade and stage, analysis of its expression in tumors serves as a prognostic factor (4, 6).

References

1. Tripp, B. C., Smith, K., & Ferry, J. G. (2001). Carbonic Anhydrase: New Insights for an Ancient Enzyme. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.R100045200

2. Nishimori, I., & Onishi, S. (2001). Carbonic anhydrase isozymes in the human pancreas. Digestive and Liver Disease. https://doi.org/10.1016/s1590-8658(01)80138-9

3. Zavadova, Z., & Zavada, J. (2005). Carbonic anhydrase IX (CA IX) mediates tumor cell interactions with microenvironment. Oncology Reports. https://doi.org/10.3892/or.13.5.977

4. Pastorekova, S., & Gillies, R. J. (2019). The role of carbonic anhydrase IX in cancer development: links to hypoxia, acidosis, and beyond. Cancer and Metastasis Reviews. https://doi.org/10.1007/s10555-019-09799-0

5. Haase, V. (2009). The VHL Tumor Suppressor: Master Regulator of HIF. Current Pharmaceutical Design. https://doi.org/10.2174/138161209789649394

6. Young, J. R., Coy, H., Kim, H. J., Douek, M., Sisk, A., Pantuck, A. J., & Raman, S. S. (2018). Association of the gross appearance of intratumoral vascularity at MDCT with the carbonic anhydrase IX score in clear cell renal cell carcinoma. American Journal of Roentgenology. https://doi.org/10.2214/AJR.18.19725

Alternate Names

CA9, G250, MN, RCC

Gene Symbol

CA9

UniProt

Q16790

Additional Carbonic Anhydrase IX/CA9 Products

Product Documents for Carbonic Anhydrase IX/CA9 Antibody (CA9/781)

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Certificate of Analysis

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Product Specific Notices for Carbonic Anhydrase IX/CA9 Antibody (CA9/781)

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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