title: From bench to bedside--translational research in psoriasis.
abstract: For many years, psoriasis was firmly believed to be a disease of epidermal keratinocytes, but now is attributed to a combination of genetic and environmental factors that promote a T-cell mediated immune response in the skin. Psoriasis is now understood to be a systemic T-cell mediated autoimmune disease with the innate immune system playing an important role. Progress in understanding the pathogenesis of psoriasis has shown that following a stimulus, dendritic and T cell activation leads to the release of cytokines, chemokines and growth factors that initiate the proliferation and altered differentiation of keratinocytes. These factors subsequently lead to continuous activation of T cells and antigen-presenting cells, particularly dendritic cells, within the psoriatic plaque. This vicious cycle of psoriasis, in which the cytokines interleukin 12 (IL-12) and IL-23 play a pivotal role, is a logical target for biological therapy.
authors.affiliation: Department of Dermatology, University of Munich, Munich, Germany. joerg.prinz@med.uni-muenchen.de
authors.forename: J C
authors.initials: JC
authors.lastname: Prinz
mesh_terms: D000911:Antibodies, Monoclonal / Q000009:adverse effects / Q000627:therapeutic use*; D061067:Antibodies, Monoclonal, Humanized; D017322:Clinical Trials, Phase II as Topic; D017326:Clinical Trials, Phase III as Topic; D006801:Humans; D007155:Immunologic Factors / Q000009:adverse effects / Q000627:therapeutic use*; D018664:Interleukin-12 / Q000276:immunology; D053759:Interleukin-23 / Q000276:immunology; D008213:Lymphocyte Activation; D011565:Psoriasis / Q000276:immunology / Q000628:therapy*; D016032:Randomized Controlled Trials as Topic; D012720:Severity of Illness Index; D013601:T-Lymphocytes / Q000276:immunology; D057170:Translational Research, Biomedical; D016896:Treatment Outcome; D000069549:Ustekinumab
chemical_list: D000911:Antibodies, Monoclonal; D061067:Antibodies, Monoclonal, Humanized; D007155:Immunologic Factors; D053759:Interleukin-23; D018664:Interleukin-12; C544528:briakinumab; D000069549:Ustekinumab