Systemic lupus erythematosus（SLE） is a typical autoimmune disease. Lymphotoxin β receptor（LTβR） signaling plays an important role in autoimmune inflammations. LTβR-Ig fusion protein, LTβR blocking agent, has b...Systemic lupus erythematosus（SLE） is a typical autoimmune disease. Lymphotoxin β receptor（LTβR） signaling plays an important role in autoimmune inflammations. LTβR-Ig fusion protein, LTβR blocking agent, has been used to treat SLE, while its mechanism remains to be fully elucidated. In this study, to investigate the expression of LTβR in the T cells of SLE patients and its roles in the pathogenesis of SLE, we isolated the peripheral blood T cells of SLE patients and normal controls to detect expression of LTβR by flow cytometry and RNA assay. T cells were also stimulated with LIGHT, a ligand of LTβR, and then detected for their LTβR expressions and apoptosis by flow cytometry. Also, their expressions of inflammatory factors and receptors were determined by RNA assay. The results showed that LTβR positive cells were 22.75%±6.98% in CD3~＋ cells of SLE patients, while there were almost no LTβR positive cells in CD3~＋ cells of normal persons. Moreover, LTβR expression was remarkably higher in CD3,CD4 and CD8 positive T cells of active SLE patients than non/low active patients（all P〈0.05）, and positively correlated with increased Ig level, decreased complement level and renal damage. Moreover, the stimulation of SLE T cells with LIGHT promoted higher expression of LTβR, IL-23 R and IL-17 A, and apoptosis of T cells. In conclusion,we demonstrated a high expression of LTβR in the T cells of SLE patients which may be associated with pathogenesis of SLE.展开更多
目的探讨类风湿性关节炎(RA)患者关节腔积液中淋巴毒素β受体(LTβR)信号通路相关分子的表达情况,了解LTβR信号通路与类风湿性关节炎之间的关联性。方法利用实时荧光定量PCR技术检测类风湿性关节炎患者(22例)和骨关节炎患者(25例)关节...目的探讨类风湿性关节炎(RA)患者关节腔积液中淋巴毒素β受体(LTβR)信号通路相关分子的表达情况,了解LTβR信号通路与类风湿性关节炎之间的关联性。方法利用实时荧光定量PCR技术检测类风湿性关节炎患者(22例)和骨关节炎患者(25例)关节腔积液标本中LTβR mRNA、LTαmRNA、LTβmRNA、p65 mRNA、Rel B mRNA的表达情况,分析LTβR信号通路相关分子在RA和骨关节炎患者中表达差异。结果类风湿性关节炎组患者关节腔积液中LTβR mRNA和Rel B mRNA的表达高于骨关节炎组,差异均有统计学意义(Z值分别为-4.399、-2.167,P<0.05),而LTαmRNA、LTβmRNA及p65 mRNA相对含量在2组间差异无统计学意义(Z值分别为-1.595、-1.461、-1.493,P>0.05)。结论 LTβR mRNA、Rel B mRNA在类风湿性关节炎患者关节腔积液中高表达,在类风湿性关节炎患者诊断中具有一定的价值,提示其可能在类风湿性关节炎的发生、发展过程中发挥一定的作用,且LTβR信号通路可能以与配体结合后激活非经典NF-κB途径的方式参与作用。展开更多
文摘Systemic lupus erythematosus（SLE） is a typical autoimmune disease. Lymphotoxin β receptor（LTβR） signaling plays an important role in autoimmune inflammations. LTβR-Ig fusion protein, LTβR blocking agent, has been used to treat SLE, while its mechanism remains to be fully elucidated. In this study, to investigate the expression of LTβR in the T cells of SLE patients and its roles in the pathogenesis of SLE, we isolated the peripheral blood T cells of SLE patients and normal controls to detect expression of LTβR by flow cytometry and RNA assay. T cells were also stimulated with LIGHT, a ligand of LTβR, and then detected for their LTβR expressions and apoptosis by flow cytometry. Also, their expressions of inflammatory factors and receptors were determined by RNA assay. The results showed that LTβR positive cells were 22.75%±6.98% in CD3~＋ cells of SLE patients, while there were almost no LTβR positive cells in CD3~＋ cells of normal persons. Moreover, LTβR expression was remarkably higher in CD3,CD4 and CD8 positive T cells of active SLE patients than non/low active patients（all P〈0.05）, and positively correlated with increased Ig level, decreased complement level and renal damage. Moreover, the stimulation of SLE T cells with LIGHT promoted higher expression of LTβR, IL-23 R and IL-17 A, and apoptosis of T cells. In conclusion,we demonstrated a high expression of LTβR in the T cells of SLE patients which may be associated with pathogenesis of SLE.
文摘目的探讨类风湿性关节炎(RA)患者关节腔积液中淋巴毒素β受体(LTβR)信号通路相关分子的表达情况,了解LTβR信号通路与类风湿性关节炎之间的关联性。方法利用实时荧光定量PCR技术检测类风湿性关节炎患者(22例)和骨关节炎患者(25例)关节腔积液标本中LTβR mRNA、LTαmRNA、LTβmRNA、p65 mRNA、Rel B mRNA的表达情况,分析LTβR信号通路相关分子在RA和骨关节炎患者中表达差异。结果类风湿性关节炎组患者关节腔积液中LTβR mRNA和Rel B mRNA的表达高于骨关节炎组,差异均有统计学意义(Z值分别为-4.399、-2.167,P<0.05),而LTαmRNA、LTβmRNA及p65 mRNA相对含量在2组间差异无统计学意义(Z值分别为-1.595、-1.461、-1.493,P>0.05)。结论 LTβR mRNA、Rel B mRNA在类风湿性关节炎患者关节腔积液中高表达,在类风湿性关节炎患者诊断中具有一定的价值,提示其可能在类风湿性关节炎的发生、发展过程中发挥一定的作用,且LTβR信号通路可能以与配体结合后激活非经典NF-κB途径的方式参与作用。
