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Xenotransplantation Model of Psoriasis

  • Jeremy Di Domizio
  • Curdin Conrad
  • Michel Gilliet
Protocol
Part of the Methods in Molecular Biology book series (MIMB, volume 1559)

Abstract

Psoriasis is a chronic autoimmune skin disease affecting approximately 2 % of the population with a major psychosocial and socioeconomic impact. A causal therapy leading to permanent cure is not available, and current treatments only lead to limited amelioration, and therefore new therapeutic targets need to be identified. Recent works demonstrated a predominant role of TH17 cells in the pathogenesis of psoriasis; yet the underlying molecular mechanisms driving the development of the disease are still largely elusive. Several mouse models of psoriasis including drug-induced models (topical application of imiquimod to the skin) and genetically engineered mice (constitutive activation of epidermal STAT3, epidermal deletion of JunB/c-Jun, and epidermal overexpression of Tie2) have been used to study the pathophysiology of the disease; however such models cannot fully recapitulate all molecular and cellular pathways occurring in human psoriasis. Xenotransplantation of human pre-psoriatic skin onto immunodeficient mice and triggering its conversion into a psoriatic plaque is the best model to dissect the mechanisms occurring during the development of human psoriasis. One model is based on the transplantation of human pre-psoriatic skin onto SCID mice followed by the transfer of activated autologous T cells. The ex vivo activation of T cells required to induce the psoriatic conversion of the graft limits the study of early events in the pathogenesis of psoriasis. Another model is based on transplantation of human pre-psoriatic skin onto AGR129 mice. In this model, the skin grafting is sufficient to activate human cells contained in the graft and trigger the conversion of the graft into a psoriatic skin, without the need of transferring activated T cells. Here we review the methodological aspects of this model and illustrate how this model can be used to dissect early events of psoriasis pathogenesis.

Key words

Preclinical model Psoriasis Xenotransplant 

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Copyright information

© Springer Science+Business Media LLC 2017

Authors and Affiliations

  • Jeremy Di Domizio
    • 1
  • Curdin Conrad
    • 1
  • Michel Gilliet
    • 1
  1. 1.Department of DermatologyUniversity Hospital CHUVLausanneSwitzerland

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