Uveitogenicity is associated with a Th1-like lymphokine profile: cytokine-dependent modulation of early and committed effector T cells in experimental autoimmune uveitis.

Important note: Information in this article was accurate in 1997. The state of the art may have changed since the publication date.

Uveitogenicity is associated with a Th1-like lymphokine profile: cytokine-dependent modulation of early and committed effector T cells in experimental autoimmune uveitis.

Cell Immunol. 1997 May 25;178(1):69-78. Unique Identifier : AIDSLINE MED/97328142
Xu H; Rizzo LV; Silver PB; Caspi RR; Laboratory of Immunology, NEI, National Institutes of Health,; Bethesda, Maryland 20892, USA.

Abstract: This study addresses the nature of the pathogenic effector T cell in experimental autoimmune uveoretinitis and the effect of different cytokines on these cells in vitro. Lymph node cells of B10.RIII mice immunized with the uveitogenic peptide 161-180 of interphotoreceptor retinoid binding protein were cultured with the peptide with or without IL-12, IL-4, or anti-IL-4. An antigen-specific T cell line was subsequently derived from these cells. Primary cultures of immune lymph node cells stimulated with the peptide proliferated and produced IL-2 and some IL-4, but no IFN-gamma. The addition of recombinant IL-12 resulted in abundant production of IFN-gamma, which was blocked by the addition of IL-4 and was enhanced by anti-IL-4. Only those cultures that produced IFN-gamma in vitro were uveitogenic in vivo. A long-term uveitogenic T cell line, initially derived in the presence of IL-12, produced IFN-gamma and IL-2, but not IL-4, and was CD4+ (Th1-like). Antigen-specific proliferation and IFN-gamma production of the line were enhanced by exogenous IL-4, TGF-beta, IL-2, IL-6, IL-7, and IL-9 and were inhibited by IL-10 and TNF-alpha. Our results provide support for the hypothesis that the uveitogenic effector T cell has a Th1-like phenotype. Furthermore, the data suggest that the effects of the cytokine milieu on fully differentiated Th1 effectors may differ considerably from their effects on less mature stages of antigen-specific T cells.

Keywords: *Autoimmune Diseases/IMMUNOLOGY *Lymphokines/PHYSIOLOGY *Retinitis/IMMUNOLOGY *Th1 Cells/IMMUNOLOGY *Uveitis/IMMUNOLOGY
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