IL-17 in systemic lupus erythematosus

José C Crispín, George C Tsokos, José C Crispín, George C Tsokos

Abstract

IL-17 is a cytokine with powerful proinflammatory activity. Production of IL-17 is abnormally increased in patients with systemic lupus erythematosus (SLE), a multiorgan chronic autoimmune disease. In patients with SLE, CD3+CD4(-)CD8(-) (double negative) T cells are an important source of IL-17. IL-17 produced by double negative and CD4 T cells participates in the pathogenesis of the disease. IL-17-producing T cells are present in the kidneys of patients with lupus nephritis. IL-17 increased production in patients with SLE can amplify the immune response by increasing target organ inflammation and damage and by augmenting the production of antibodies by B cells.

Figures

Figure 1
Figure 1
The IL-17 response is amplified in SLE. Nucleic acid-containing immune complexes and other inflammatory stimuli (e.g., cytokines) induce the production of pro-inflammatory cytokines by dendritic cells. These factors, along with others not yet identified, favor the generation of pro-inflammatory IL-17-producing T cell subsets (i.e., TH17 and DN T cells) able to migrate to target organs and inflict damage. Produced IL-17 amplifies the inflammatory response and stimulates other cell types (e.g., B cells).

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Source: PubMed

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