title: Differential effects of interleukin 12 and interleukin 10 on superantigen-induced expression of cutaneous lymphocyte-associated antigen (CLA) and alphaEbeta7 integrin (CD103) by CD8+ T cells.
abstract: At both cutaneous and mucosal sites, interleukin (IL)-10, IL-12 and transforming growth factor (TGF)-beta are important regulators of chronic inflammatory disease, where cutaneous lymphocyte-associated antigen (CLA) and alphaE integrin (CD103) may be expressed. Stimulation with streptococcal pyrogenic exotoxin C (SpeC) increased the expression of CD103 by CD8+ but not CD4+ T cells. While adding IL-12 augmented the expression of CLA, superantigen-induced expression of CD103 was markedly suppressed by IL-12, which could be reversed by TGF-beta. Antibodies against TGF-beta inhibited, and a combination of anti-TGF-beta and IL-12 completely abrogated the induced CD103 expression. IL-10 strongly decreased the frequency of CLA+ and although not increasing the frequency of CD103+CD8+ T cells, the amount of CD103 expressed per cell was markedly increased. Thus, the expression of CLA and CD103 may be antagonistically regulated by IL-10 and IL-12 and the balance between these cytokines could influence the T cell migration of inflammatory cells into epithelial tissues.
authors.affiliation: Department of Immunology, Landspitali University Hospital, 101 Reykjavik, Iceland.
authors.forename: Hekla
authors.initials: H
authors.lastname: Sigmundsdóttir
authors.forename: Andrew
authors.initials: A
authors.lastname: Johnston
authors.forename: Johann Eli
authors.initials: JE
authors.lastname: Gudjónsson
authors.forename: Helgi
authors.initials: H
authors.lastname: Valdimarsson
mesh_terms: D015703:Antigens, CD / Q000096:biosynthesis*; D000945:Antigens, Differentiation, T-Lymphocyte; D000951:Antigens, Neoplasm; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology*; D005434:Flow Cytometry; D005455:Fluorescent Antibody Technique; D006801:Humans; D039001:Integrin alpha Chains / Q000096:biosynthesis*; D016753:Interleukin-10 / Q000276:immunology*; D018664:Interleukin-12 / Q000276:immunology*; D008213:Lymphocyte Activation / Q000276:immunology; D008562:Membrane Glycoproteins / Q000096:biosynthesis*; D012867:Skin / Q000276:immunology; D018089:Superantigens / Q000276:immunology*
chemical_list: D015703:Antigens, CD; D000945:Antigens, Differentiation, T-Lymphocyte; D000951:Antigens, Neoplasm; C063419:CTAGE1 protein, human; D039001:Integrin alpha Chains; D008562:Membrane Glycoproteins; D018089:Superantigens; C091367:alpha E integrins; D016753:Interleukin-10; D018664:Interleukin-12