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Key Product Details

Species Reactivity

Validated:

Human

Cited:

Human

Applications

Validated:

ELISA, Flow Cytometry, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry, Immunohistochemistry-Frozen, Immunohistochemistry-Paraffin, Western Blot

Cited:

IF/IHC, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry-Paraffin

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG1 Clone # 5C6-FAT

Format

Azide and BSA Free

Concentration

2 mg/ml

Product Specifications

Immunogen

Human CD163.

Localization

Soluble CD163: Secreted. Cell membrane; Single-pass type I membrane protein. Note: Isoform 1 and isoform 2 show a lower surface expression when expressed in cells.

Specificity

Human: monocytes and macrophages. Other: not tested.

Marker

Histiocytic Marker

Clonality

Monoclonal

Host

Mouse

Isotype

IgG1

Description

Antigen distribution:
Isolated cells: Monocytes, particularly after dexamethasone treatment or after 2-5 days in culture. Does not react with lymphocytes, granulocytes or platelets.
Tissue sections: Positive staining can be observed in the skin (histiocytes), gut, Kupffer cells, few alveolar macrophages, a major population of macrophages in the placenta, varying degrees of macrophages in inflamed tissues, including tumorous tissue depending on the inflammatory stage. Red pulp, but not white pulp macrophages of the spleen, and cortical macrophages of the thymus are detected. Macrophages in the synovialis of patients with rheumatoid arthritis. In alveolar macrophages and in Kupffer cells a double staining can be observed with monoclonal antibody 25F9 (product T-1016) which is not the case in other tissues.

Applications for CD163 Antibody (5C6-FAT) - Azide and BSA Free

Application
Recommended Usage

ELISA

1:100-1:2000

Immunocytochemistry/ Immunofluorescence

1:10-1:500

Immunohistochemistry

1:10-1:500

Immunohistochemistry-Frozen

0.5 ug/ml

Immunohistochemistry-Paraffin

1.0 ug/ml

Western Blot

1:100-1:2000
Application Notes
The CD163 antibody (5C6-FAT) is useful for Immunohistochemistry on frozen and paraffin-embedded sections, ELISA, and Western Blot. For IHC on paraffin-embedded sections Proteinase K pretreatment for antigen retrieval is recommended. Immunocytochemistry/Immunofluorescence was reported in scientific literature.
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Formulation, Preparation, and Storage

Purification

Affinity purified

Formulation

PBS (pH 7.2)

Format

Azide and BSA Free

Preservative

No Preservative

Concentration

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 -70C. Avoid freeze-thaw cycles.

Background: CD163

CD163 (Cluster of Differentiation 163), also known by several other names including M130, p155, RM3/1, Ki-M8, Ber-MAC3, SM4, and GHI/61, is a type I transmembrane glycoprotein that is a member of the scavenger receptor cysteine-rich (SRCR) super family class B (1-3). CD163 is expressed specifically on the monocyte/macrophage lineage and has a theoretical molecular weight of 130-160 kDa in reducing conditions and 110 kDa in non-reducing conditions (2 - 6). CD163 is synthesized as 1076 amino acid (aa) protein consisting of a large extracellular domain (ECD) with nine SRCR domains, proline-serine-threonine rich (PST) linker domain, a transmembrane segment, and a cytoplasmic tail which has varying lengths depending on the isoform due to alternative splicing, with the short 49 aa form being the most common (1-3, 6).

One of the primary functions of CD163 is uptake of haptoglobin-hemoglobin (Hp-Hb) complexes from the liver, spleen, and bone marrow, ultimately triggering an anti-inflammatory response (3, 5, 7). CD163 also functions as an erythroblast adhesion receptor and promotes cell maturation and survival (3, 5, 7). Furthermore, CD163 functions in immune sensing of bacteria and as a receptor for tumor necrosis factor (TNF)-like weak inducer of apoptosis (TWEAK) (3, 5, 7). As mentioned above, CD163 is expressed on cells in the monocyte/macrophage lineage and, in general, anti-inflammatory signals including glucocorticoids, interleukin (IL)-6, and IL-10 stimulate CD163 synthesis and expression while, conversely, pro-inflammatory signals such as interferon-gamma (INF-gamma), TNF-alpha, and lipopolysaccharide (LPS) downregulate CD163 (3, 5). In addition to membrane-bound form of CD163, the protein can be cleaved by metalloproteinases (MMP) and induced by LPS or phorbol myristate acetate (PMA) to release a soluble form (sCD163) into the plasma (7). Increased levels of sCD163 in the plasma and an increased number of CD163-expressing macrophages at the site of inflammation are associated with a variety of pathologies (3, 5-7). CD163/sCD163 is often increased and a suitable clinical marker for inflammatory diseases including rheumatoid arthritis (RA), Gaucher disease, chronic kidney disease, diabetes, and Crohn's disease (3, 5-7).

Alternative names for CD163 includes GHI/61, HbSR, Hemoglobin scavenger receptor, M130, macrophage-associated antigen, MM130, RM3/1, SCARI1, scavenger receptor cysteine-rich type 1 protein M130, sCD163, and soluble CD163.

References

1. Law, S. K., Micklem, K. J., Shaw, J. M., Zhang, X. P., Dong, Y., Willis, A. C., & Mason, D. Y. (1993). A new macrophage differentiation antigen which is a member of the scavenger receptor superfamily. European journal of immunology. https://doi.org/10.1002/eji.1830230940

2. Onofre, G., Kolackova, M., Jankovicova, K., & Krejsek, J. (2009). Scavenger receptor CD163 and its biological functions. Acta medica (Hradec Kralove).

3. Van Gorp, H., Delputte, P. L., & Nauwynck, H. J. (2010). Scavenger receptor CD163, a Jack-of-all-trades and potential target for cell-directed therapy. Molecular immunology. https://doi.org/10.1016/j.molimm.2010.02.008

4. Sulahian, T. H., Hogger, P., Wahner, A. E., Wardwell, K., Goulding, N. J., Sorg, C., Droste, A., Stehling, M., Wallace, P. K., Morganelli, P. M., & Guyre, P. M. (2000). Human monocytes express CD163, which is upregulated by IL-10 and identical to p155. Cytokine. https://doi.org/10.1006/cyto.2000.0720

5. Etzerodt, A., & Moestrup, S. K. (2013). CD163 and inflammation: biological, diagnostic, and therapeutic aspects. Antioxidants & redox signaling. https://doi.org/10.1089/ars.2012.4834

6. Skytthe, M. K., Graversen, J. H., & Moestrup, S. K. (2020). Targeting of CD163+ Macrophages in Inflammatory and Malignant Diseases. International journal of molecular sciences, 21(15), 5497. https://doi.org/10.3390/ijms21155497

7. Moller H. J. (2012). Soluble CD163. Scandinavian journal of clinical and laboratory investigation. https://doi.org/10.3109/00365513.2011.626868

Alternate Names

CD163, GHI/61, HbSR, M130, RM3/1

Entrez Gene IDs

9332 (Human)

Gene Symbol

CD163

UniProt

Additional CD163 Products

Product Documents for CD163 Antibody (5C6-FAT) - Azide and BSA Free

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Product Specific Notices for CD163 Antibody (5C6-FAT) - Azide and BSA Free

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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