Study on the surface markers on peripheral blood dendritic cells and their secretion of IL-12 and IFN-alpha in SLE patients

• Published in: Xi bao yu fen zi mian yi xue za zhi Vol. 21; no. 4; p. 499
• Main Authors: Qi, Hui, Li, Fu-rong, Liu, Dong-zhou, Xiao, Xue-lu, Ren, Li-li, Wen, Jin-li, Huang, Rui-fang
• Format: Journal Article
• Language: Chinese
• Published: China 01.07.2005
• Subjects: Adult; Antigens, CD - immunology; Antigens, CD - metabolism; Case-Control Studies; Dendritic Cells - metabolism; Dendritic Cells - secretion; Female; Gene Expression Regulation - immunology; Humans; Interferon-alpha - secretion; Interleukin-12 - secretion; Lupus Erythematosus, Systemic - immunology; Lupus Erythematosus, Systemic - metabolism; Lupus Erythematosus, Systemic - pathology; Male
• ISSN: 1007-8738

To analyze the surface markers on peripheral blood dendritic cells (DCs) in SLE patients and explore the relationship between the DCs and pathogenesis of SLE. The peripheral blood monouclear cells (PBMCs) were separated by density gradient centrifugation. After culture of 3 hours in tissue culture flask, the suspended cells were removed and GM-CSF, IL-4 and TNF-alpha were used to stimulate the proliferation and maturation of the peripheral blood DCs from normal persons and SLE patients. The surface markers on the DCs were analyzed by flow cytometry and the levels of IL-12 and IFN-alpha in supernatants were measured by ELISA after culture of 9 days. The positive percentages of CD1a, CD11c, CD40, CD83 and CD123 expressed on DCs of SLE patients were (58.88+/-7.64)%, (54.4+/-10.88)%, (37.29+/-8.08)%, (57.76+/-11.54)% and (13.14+/-4.44)%, respectively, whereas those of normal subjects were (47.71+/-4.01)%, (43.12+/-8.82)%, (28.59+/-7.07)%, (48.31+/-8.79)% and (9.85+/-3.97)%, respectively, (P<0.05). But the positiv