The 8^th International Workshop on Human Leucocyte Differentiation Antigens （chaired by HZ and managed by BS） was run over a 4-year period and culminated in a conference in December 2004. Here we review the achievem...The 8^th International Workshop on Human Leucocyte Differentiation Antigens （chaired by HZ and managed by BS） was run over a 4-year period and culminated in a conference in December 2004. Here we review the achievements of the HLDA Workshops and provide links to information on CD molecules and antibodies against them, including the 93 new CDs assigned in the 8^th Workshop. We consider what remains to be achieved （including an estimate of the number of leucocyte surface molecules still to be discovered）, and how the field can best move forward.展开更多
目的检测盘状红斑狼疮(DLE)患者外周T淋巴细胞CD70基因表达水平,并探讨CD70基因在DLE发病机理中的作用。方法 RT-PCR测定2014年1月至2015年6月在我院就诊的15例活动期、15例非活动期DLE患者和同期健康体检的15例健康人(对照组)外周血T...目的检测盘状红斑狼疮(DLE)患者外周T淋巴细胞CD70基因表达水平,并探讨CD70基因在DLE发病机理中的作用。方法 RT-PCR测定2014年1月至2015年6月在我院就诊的15例活动期、15例非活动期DLE患者和同期健康体检的15例健康人(对照组)外周血T淋巴细胞CD70 m RNA转录水平,流式细胞术检测各组样本中CD4+CD70+T/CD8+CD70+T的阳性率。结果活动期和非活动期DLE患者T淋巴细胞中的CD70 m RNA转录水平分别为(4.5±0.19)和(2.9±0.09),显著高于对照组的(1.9±0.11),差异均有显著统计学意义(P<0.01),且活动期DLE患者T淋巴细胞中的CD70 m RNA的转录水平明显高于非活动期DLE患者,差异具有统计学意义(P<0.05);活动期和非活动期DLE患者的外周血CD4+CD70+T淋巴细胞的阳性率分别为(18.82±1.22)%和(15.32±1.01)%,明显高于对照组的(14.63±0.41)%,差异均有统计学意义(P<0.05或P<0.01),且活动期DLE患者的阳性率显著高于非活动期DLE患者,统计有显著统计学意义(P<0.01);活动期和非活动期DLE患者T淋巴细胞中CD8+CD70+的阳性率与对照组比较,差异均无统计学意义(P>0.05)。结论 CD70基因的过度表达在DLE的发生发展中起着重要的作用,且CD70过度表达可作为检测DLE疾病患者的一个重要指标。展开更多
Background The mechanism of chronic immune activation and impairment of HIV-specific immune responses during chronic infection is not fully understood. However, it is known that high immune activation leads to more ra...Background The mechanism of chronic immune activation and impairment of HIV-specific immune responses during chronic infection is not fully understood. However, it is known that high immune activation leads to more rapid progression to AIDS. We hypothesize that CD4^＋ T cell-mediated viral antigen presentation contributes to this pathologic immune activation in HIV-infected individuals. Methods HIV-specific T cells, responding to noninfectious HIV-1 virions as antigen, were measured by flow cytometric assays. These experimental conditions reflect the in vivo condition where noninfectious HIV-1 represents more than 99% of the antigens. Results CD4^＋ T cells purified from HIV-infected individuals were capable of cross presenting exogenous noninfectious HIV-1 virions to HIV-1-specific CD8^＋ T cells. Cross presentation required the entry of HIV-1 to CD4^＋ T cells and antigen translocation from endoplasmic reticulum to the Golgi complex. Blocking CD4^＋ mediated activation of HIV-specific CD8^＋ T cells and redirecting the viral antigens to antigen presenting cells improved HIV-specific T cell responses. Contusions One possible cause of chronic immune activation and impairment of HIV-1 specific T cell responses is represented by HIV-1 harboring CD4^＋ T cells cross presenting HIV-1 antigen to activate CD8^＋ T cells. This new mechanism provides the first evidence that cross presentation of noninfectious HIV-1 virions play a role in the immunopathogenesis of HIV-1 infection.展开更多
Objective: To investigate the effect of Lang-chuang-ding Decoction(狼疮定汤, LCD) on the expression of DNA methylation of CD70 gene promoter in peripheral blood mononuclear cells(PBMCs) of females with systemic lupus ...Objective: To investigate the effect of Lang-chuang-ding Decoction(狼疮定汤, LCD) on the expression of DNA methylation of CD70 gene promoter in peripheral blood mononuclear cells(PBMCs) of females with systemic lupus erythematosus(SLE). Methods: PBMCs isolated from female patients with SLE or healthy donors were cultured and treated with LCD medicated serum or normal serum for 24 or 48 h. The m RNA expressions of CD70 gene in PBMCs were detected by reverse transcription polymerase chain reaction(PCR); the DNA methylation of the CD70 gene promoter region was detected by methylation-specific PCR. Results: After treated with medicated serum for 48 h, the m RNA expression levels of CD70 in PBMCs of SLE patients were significantly higher than those of healthy donors(P<0.05); the DNA methylation levels of CD70 promoter region in PBMCs of SLE patients treated with medicated serum for 48 h were significantly higher than those treated with fetal bovine serum(P<0.01). Conclusion: LCD could inhibit CD70 gene expression in PBMCs of SLE patients by promoting the DNA methylation of CD70 gene promoter.展开更多
文摘The 8^th International Workshop on Human Leucocyte Differentiation Antigens （chaired by HZ and managed by BS） was run over a 4-year period and culminated in a conference in December 2004. Here we review the achievements of the HLDA Workshops and provide links to information on CD molecules and antibodies against them, including the 93 new CDs assigned in the 8^th Workshop. We consider what remains to be achieved （including an estimate of the number of leucocyte surface molecules still to be discovered）, and how the field can best move forward.
文摘目的检测盘状红斑狼疮(DLE)患者外周T淋巴细胞CD70基因表达水平,并探讨CD70基因在DLE发病机理中的作用。方法 RT-PCR测定2014年1月至2015年6月在我院就诊的15例活动期、15例非活动期DLE患者和同期健康体检的15例健康人(对照组)外周血T淋巴细胞CD70 m RNA转录水平,流式细胞术检测各组样本中CD4+CD70+T/CD8+CD70+T的阳性率。结果活动期和非活动期DLE患者T淋巴细胞中的CD70 m RNA转录水平分别为(4.5±0.19)和(2.9±0.09),显著高于对照组的(1.9±0.11),差异均有显著统计学意义(P<0.01),且活动期DLE患者T淋巴细胞中的CD70 m RNA的转录水平明显高于非活动期DLE患者,差异具有统计学意义(P<0.05);活动期和非活动期DLE患者的外周血CD4+CD70+T淋巴细胞的阳性率分别为(18.82±1.22)%和(15.32±1.01)%,明显高于对照组的(14.63±0.41)%,差异均有统计学意义(P<0.05或P<0.01),且活动期DLE患者的阳性率显著高于非活动期DLE患者,统计有显著统计学意义(P<0.01);活动期和非活动期DLE患者T淋巴细胞中CD8+CD70+的阳性率与对照组比较,差异均无统计学意义(P>0.05)。结论 CD70基因的过度表达在DLE的发生发展中起着重要的作用,且CD70过度表达可作为检测DLE疾病患者的一个重要指标。
基金This study was supported by a grant from the Major Basic Project of China (973) (No. 2005CB522903).
文摘Background The mechanism of chronic immune activation and impairment of HIV-specific immune responses during chronic infection is not fully understood. However, it is known that high immune activation leads to more rapid progression to AIDS. We hypothesize that CD4^＋ T cell-mediated viral antigen presentation contributes to this pathologic immune activation in HIV-infected individuals. Methods HIV-specific T cells, responding to noninfectious HIV-1 virions as antigen, were measured by flow cytometric assays. These experimental conditions reflect the in vivo condition where noninfectious HIV-1 represents more than 99% of the antigens. Results CD4^＋ T cells purified from HIV-infected individuals were capable of cross presenting exogenous noninfectious HIV-1 virions to HIV-1-specific CD8^＋ T cells. Cross presentation required the entry of HIV-1 to CD4^＋ T cells and antigen translocation from endoplasmic reticulum to the Golgi complex. Blocking CD4^＋ mediated activation of HIV-specific CD8^＋ T cells and redirecting the viral antigens to antigen presenting cells improved HIV-specific T cell responses. Contusions One possible cause of chronic immune activation and impairment of HIV-1 specific T cell responses is represented by HIV-1 harboring CD4^＋ T cells cross presenting HIV-1 antigen to activate CD8^＋ T cells. This new mechanism provides the first evidence that cross presentation of noninfectious HIV-1 virions play a role in the immunopathogenesis of HIV-1 infection.
基金Supported by the National Natural Science Foundation of China(No.81373633)the Traditional Chinese Medicine Scientific Research Fund of Zhejiang Province,China(No.2016ZA095)
文摘Objective: To investigate the effect of Lang-chuang-ding Decoction(狼疮定汤, LCD) on the expression of DNA methylation of CD70 gene promoter in peripheral blood mononuclear cells(PBMCs) of females with systemic lupus erythematosus(SLE). Methods: PBMCs isolated from female patients with SLE or healthy donors were cultured and treated with LCD medicated serum or normal serum for 24 or 48 h. The m RNA expressions of CD70 gene in PBMCs were detected by reverse transcription polymerase chain reaction(PCR); the DNA methylation of the CD70 gene promoter region was detected by methylation-specific PCR. Results: After treated with medicated serum for 48 h, the m RNA expression levels of CD70 in PBMCs of SLE patients were significantly higher than those of healthy donors(P<0.05); the DNA methylation levels of CD70 promoter region in PBMCs of SLE patients treated with medicated serum for 48 h were significantly higher than those treated with fetal bovine serum(P<0.01). Conclusion: LCD could inhibit CD70 gene expression in PBMCs of SLE patients by promoting the DNA methylation of CD70 gene promoter.
