Abstract
Objective To explore the mechanism of immunomodulatory activity of triptolide on systemic lupus erythematosus(SLE) patients peripheral blood mononuclear cells( PBMC)-derived dendritic cells (DCs).Methods SLE -derived DCs were sorted by flow cytometry from peripheral blood mononuclear cells,then incubated with triptolide (0,5,10,30 μg/L ).After 24 h,we collected the supernatants and then detected the concentration of IFN-α,IL-6,TNF-α using ELISA.After 5 d,the cultrural cells were collected and CD11c,CD80,CD86 expression of DCs were analyzed by flow cytometry,we observed the morphology of DC by light microscope and electron microscope scanning.Results Triptolide -treated DCs from SLE patients with active and stable disease secreted lower level of IFN-α,IL-6,TNF-α,triptolide could inhibit DCs differentiation,which displayed more immature morphology and immunophenotypes than untreatedDCs.Conclusion Triptolide could decrease the immune function of DCs from SLE,inhibit differentiation and maturation of DCs. Key words: Triptolide; Systemic lupus erythematosus; Dendritic cells; Maturation
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