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Mouse Monoclonal to CD169 / Siglec-1

7-239 (IgG1)

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CD169, also known as Siglec-1 or sialoadhesin, is a type I transmembrane glycoprotein of the sialic acid binding Ig-like lectin family. It binds to sialylated glycoproteins on various haematopoietic cells to mediate cell-cell interactions. CD169 is expressed on a subset of macrophages and dendritic cells. On CD14+ monocytes its expression can be induced by interferon alpha and gamma. High expression of CD169 is observed in the spleen, lymph nodes, bone marrow, and under inflammatory conditions rheumatoid arthritis and atherosclerosis, lower in the liver, lungs and gut. It has been shown to be involved in antigen presentation to invariant NKT cells, which play an important role in the innate arm of the immune system to modulate the subsequent acquired immune responses.


The mouse monoclonal antibody 7-239 recognizes CD169 (sialoadhesin, Siglec-1), a 210 kDa type I transmembrane glycoprotein expressed on macrophages and dendritic cells.

Regulatory Status


human rhinovirus 14-infected monocyte-derived dendritic cells

Species Reactivity:

  • Human

Negative Species:


  • Flow Cytometry
  • Immunoprecipitation
  • Western Blotting
  • Immunohistochemistry (frozen sections)
  • Functional Application
    inhibition of erythrocyte rosetting with cells expressing cd169
Usage note:
Indicated dilutions are recommended starting points for use of this product. Working concentrations should be determined by the investigator.

Product Specific References

  • *Schrauf C, Kirchberger S, Majdic O, Seyerl M, Zlabinger GJ, Stuhlmeier KM, Sachet M, Seipelt J, St÷ckl J: The ssRNA genome of human rhinovirus induces a type I IFN response but fails to induce maturation in human monocyte-derived dendritic cells. J Immunol. 2009 Oct 1;183(7):4440-8. [Abstract] [Full Text]
  • *Kawasaki N, Vela JL, Nycholat CM, Rademacher C, Khurana A, van Rooijen N, Crocker PR, Kronenberg M, Paulson JC: Targeted delivery of lipid antigen to macrophages via the CD169/sialoadhesin endocytic pathway induces robust invariant natural killer T cell activation. Proc Natl Acad Sci U S A. 2013 May 7;110(19):7826-31. [Abstract] [Full Text]
  • For research use only. Not for drug, diagnostic or other use.

    Example Data

    7-239 PE

    Fig. 1. Surface staining of CD169 on buffy coat diff. monocytes by anti-CD169 (7-239) PE.

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