Immunologic Research

, Volume 58, Issue 2–3, pp 374–377 | Cite as

Depletion of inflammatory dendritic cells with anti-CD209 conjugated to saporin toxin

  • Michael N. Alonso
  • Josh G. Gregorio
  • Matthew G. Davidson
  • Joseph C. Gonzalez
  • Edgar G. EnglemanEmail author


Monocytes rapidly infiltrate inflamed tissues and differentiate into CD209+ inflammatory dendritic cells (DCs) that promote robust immunity or, if unregulated, inflammatory disease. Previous studies in experimental animal models indicate that inflammatory DC depletion through systemic elimination of their monocyte precursors with clodronate-loaded liposomes ameliorates the development of psoriasis and other diseases. However, translation of systemic monocyte depletion strategies is difficult due to the importance of monocytes during homeostasis and infection clearance. Here, we describe a strategy that avoids the monocyte intermediates to deplete inflammatory DCs through antibody-loaded toxin. Mice with an abundance of inflammatory DCs as a consequence of lipopolysaccharide exposure were treated with anti-CD209 antibody conjugated to saporin, a potent ribosome inactivator. The results demonstrate depletion of CD209+ DCs. This strategy could prove useful for the targeted reduction of inflammatory DCs in disease.


Monocytes Inflammatory dendritic cells CD209 Antibody-conjugated toxin Saporin 


Conflict of interest

The authors declare no conflict of interest.


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Michael N. Alonso
    • 1
  • Josh G. Gregorio
    • 1
  • Matthew G. Davidson
    • 1
  • Joseph C. Gonzalez
    • 1
  • Edgar G. Engleman
    • 1
    Email author
  1. 1.Department of PathologyStanford University School of MedicineStanfordUSA

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