Maturation and Migration of Murine Dendritic Cells in Situ

Observations in a Skin Organ Culture Model
  • Hella Stössel
  • Franz Koch
  • Nikolaus Romani
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 417)

Abstract

Dendritic cells reside in tissues such as skin in an immature state. Upon antigenic challenge they begin to mature and migrate to the draining lymph nodes. These processes are still poorly understood. One way to study in situ aspects of maturation and migration are skin organ culture models. In an attempt to learn more about the relationship between maturation and migration we investigated the expression of several marker molecules by immunohistochemistry. Sheets from normal murine ear skin and from skin that had been cultured for three days were compared.

During culture the numbers of epidermal Langerhans cells decreased and accumulations of strongly MHC class II-positive cells (“cords”) were found in the dermis. As compared to untreated skin, the few Langerhans cells remaining in the epidermal sheets after 2–3 days expressed increased levels of MHC class II and had also upregulated B7–2 (CD86) as described. They did not express the antigen recognized by mAb 2A1, a marker for mature dendritic cells. Double-staining of dermal sheets after 3 days of culture showed that dendritic cells in the “cords” expressed high levels of MHC class II and CD86 but were also reactive with mAb 2A1. This pattern is identical to those dendritic cells that had emigrated into the culture medium over the period of 3 days. Invariant chain (mAb In l) was detected at all stages of culture as opposed to isolated epidermal Langerhans cells in suspension where invariant chain expression disappears after 3 days of culture.

We conclude that the up- (class II, B7–2, 2A1) and down-regulation (invariant chain) of dendritic cell molecules during migration does not happen in a synchronized manner. The molecule recognized by mAb 2A1 seems to appear late in maturation.

Keywords

Dendritic Cell Dendritic Cell Maturation Mature Dendritic Cell Invariant Chain Epidermal Sheet 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Hella Stössel
    • 1
  • Franz Koch
    • 1
  • Nikolaus Romani
    • 1
  1. 1.Department of DermatologyUniversity of InnsbruckInnsbruckAustria

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