Expression of B lymphocyte stimulator in peripheral blood mononuclear cells in individuals with systemic lupus erythematosus and the role of interferon-? on it's expression
- VernacularTitle:IFN-?对系统性红斑狼疮患者外周血单个核细胞B细胞刺激因子表达的调控
- Author:
Yu-Jin YE
;
Han-Shi XU
;
Liu-Qin LIANG
;
Pei-Da YIN
;
Xiu-Yan YANG
;
Zhong-Ping ZHAN
;
Fan LIAN
;
- Publication Type:Journal Article
- Keywords:
Lupus erythematosus;
systemic;
Interferon typeⅡ;
B lymphocyte stimulator;
Peripheral blood mononuclear cells
- From:
Chinese Journal of Rheumatology
2003;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determine the expression of membrane-bound B lymphocyte stimulator (BLyS) protein and its mRNA in vitro of peripheral blood mononuclear cells (PBMCs) from individuals with systemic lupus erythematosus (SLE),and to investigate the role of interferon-?(IFN-?) on the expression of BLyS.Methods PBMCs were obtained from 25 SLE patients (mean age of 31+14) and 20 healthy volunteers (mean age of 28?10).They were randomized into IFN-?(5 ng/ml) group and control group.PBMCs were col- lected at 0,6,12 and 24 h for BLyS mRNA assessment using semi-quantitative reverse transcription-PCR (RT-PCR).PBMCs were also collected at 72 h for membrane-bound BLyS protein detection using flow cy- tometry (FACS) and direct immunofluorescence.Results①The expression of BLyS mRNA and membrane- bound protein in PBMCs was significantly higher in individuals with SLE compared with healthy controls (P＜0.05);②IFN-?enhanced BLyS mRNA expression in PBMCs in both healthy controls and SLE patients,with the greatest effect at 6 h (stimulated vs unstimulated,0.42?0.19 vs 0.25?0.14,P＜0.01;0.59?0.28 vs 0.44?0.21,P＜0.01 );③IFN-?also increased the expression of membrane-bound BLyS protein in both healthy con- trols and individuals with SLE (FACs,mean fluorescence intensity,4.5+3.0 vs 3.7~2.6,P
