本文回顾性分析2021年3月山东大学附属威海市立医院收治的1例CD4^(-)CD8^(-)TCRγδ^(+)T细胞大颗粒淋巴细胞白血病(T-cell large granular lymphocyte leukemia,T-LGLL)合并纯红细胞再生障碍性贫血(Pure red cell aplasia,PRCA)患者的...本文回顾性分析2021年3月山东大学附属威海市立医院收治的1例CD4^(-)CD8^(-)TCRγδ^(+)T细胞大颗粒淋巴细胞白血病(T-cell large granular lymphocyte leukemia,T-LGLL)合并纯红细胞再生障碍性贫血(Pure red cell aplasia,PRCA)患者的临床资料,并复习相关文献,以提高对CD4^(-)CD8^(-)TCRγδ^(+)T-LGLL合并PRCA的认知,从而减少临床中的误诊及漏诊。展开更多
本研究的目的是了解结核性胸膜炎患者胸水中CD4^＋、CD8^＋T细胞聚集情况，并建立高效、灵敏的TCRα和β链多重PCR扩增方法，扩增出其特异性CD4^＋、CD^＋T细胞的TCRα和β链全长编码序列，研究病变局部特异性克隆增殖TCR的重排特点以及...本研究的目的是了解结核性胸膜炎患者胸水中CD4^＋、CD8^＋T细胞聚集情况，并建立高效、灵敏的TCRα和β链多重PCR扩增方法，扩增出其特异性CD4^＋、CD^＋T细胞的TCRα和β链全长编码序列，研究病变局部特异性克隆增殖TCR的重排特点以及CDR3（complementarity-determining region 3）谱型，可供构建结核分枝杆菌（Mtb）特异反应性TCR四聚体参考。展开更多
The presence of a relatively mature CD4+CD8- (SP)T cell subset in mouse thymus has been demonstrated. Composing of 10% of total CD4SP thymocytes, this subset is defined by the absence of 3G11 and 6C10 expression with ...The presence of a relatively mature CD4+CD8- (SP)T cell subset in mouse thymus has been demonstrated. Composing of 10% of total CD4SP thymocytes, this subset is defined by the absence of 3G11 and 6C10 expression with a phenotype of CD69 +/- , HSAmed/lo and heterogeneous for Qa - 2 expression. The proliferation capability of TCRαβ+ 3G11-6C10- CD4+ CD8- thymocytes was high while using Con A stimulus. And Con A stimulation could result in secretion of IL-4, IL-10, IL-6 and a little amount of IFNγ. IL-2 was barely detectable. This is distinct from typical Th0 type cytokines. The cells of this subset were NK1.1 negative, but strongly expressed GATA-3 mRNA. The results suggest that the CD4+ subset of 3G11 - 6C10- NK1.1 - phenotype possesses immunocompetent cells with functions characteristic of Th2-like cytokines, which may indicate the cells at transitional status from ThO to Th2, with a propensity to Th2.展开更多
A murine CD4+ thymocyte subset with phenotype of TCRαβ + 3G11- 6C10- CD4 + CD8- CD69 + /- HSAmed/lo contains the cells in relatively functional matured status. The functional property of the cells in this subset is ...A murine CD4+ thymocyte subset with phenotype of TCRαβ + 3G11- 6C10- CD4 + CD8- CD69 + /- HSAmed/lo contains the cells in relatively functional matured status. The functional property of the cells in this subset is characterized by the unique pattern of cytokine production at transitional stage from ThO to Th2 type with the latter being the dominant type. After being co-cultured with murine thymic medullary epithelial cell line (MTEC1) cells, a murine展开更多
activation.Therefore,engagement of the costimulatory CD27/CD70 pathway is solely dependent on upregulation of CD70.However,the T cell-intrinsic effect and function of human CD70 remain underexplored.Herein,we describe...activation.Therefore,engagement of the costimulatory CD27/CD70 pathway is solely dependent on upregulation of CD70.However,the T cell-intrinsic effect and function of human CD70 remain underexplored.Herein,we describe that CD70 expression distinguishes proinflammatory CD4^(+)T lymphocytes that display an increased potential to migrate into the central nervous system(CNS).Upregulation of CD70 on CD4^(+)T lymphocytes is induced by TGF-β1 and TGF-β3,which promote a pathogenic phenotype.In addition,CD70 is associated with a TH1 and TH17 profile of lymphocytes and is important for T-bet and IFN-γexpression by both T helper subtypes.Moreover,adoptive transfer of CD70−/−CD4^(+)T lymphocytes induced less severe experimental autoimmune encephalomyelitis(EAE)disease than transfer of WT CD4^(+)T lymphocytes.CD70+CD4^(+)T lymphocytes are found in the CNS during acute autoimmune inflammation in humans and mice,highlighting CD70 as both an immune marker and an important costimulator of highly pathogenic proinflammatory TH1/TH17 lymphocytes infiltrating the CNS.展开更多
文摘本文回顾性分析2021年3月山东大学附属威海市立医院收治的1例CD4^(-)CD8^(-)TCRγδ^(+)T细胞大颗粒淋巴细胞白血病(T-cell large granular lymphocyte leukemia,T-LGLL)合并纯红细胞再生障碍性贫血(Pure red cell aplasia,PRCA)患者的临床资料,并复习相关文献,以提高对CD4^(-)CD8^(-)TCRγδ^(+)T-LGLL合并PRCA的认知,从而减少临床中的误诊及漏诊。
文摘本研究的目的是了解结核性胸膜炎患者胸水中CD4^＋、CD8^＋T细胞聚集情况，并建立高效、灵敏的TCRα和β链多重PCR扩增方法，扩增出其特异性CD4^＋、CD^＋T细胞的TCRα和β链全长编码序列，研究病变局部特异性克隆增殖TCR的重排特点以及CDR3（complementarity-determining region 3）谱型，可供构建结核分枝杆菌（Mtb）特异反应性TCR四聚体参考。
基金Project supported by the National Natural Science Foundation of China (Grant No. 39730410).
文摘The presence of a relatively mature CD4+CD8- (SP)T cell subset in mouse thymus has been demonstrated. Composing of 10% of total CD4SP thymocytes, this subset is defined by the absence of 3G11 and 6C10 expression with a phenotype of CD69 +/- , HSAmed/lo and heterogeneous for Qa - 2 expression. The proliferation capability of TCRαβ+ 3G11-6C10- CD4+ CD8- thymocytes was high while using Con A stimulus. And Con A stimulation could result in secretion of IL-4, IL-10, IL-6 and a little amount of IFNγ. IL-2 was barely detectable. This is distinct from typical Th0 type cytokines. The cells of this subset were NK1.1 negative, but strongly expressed GATA-3 mRNA. The results suggest that the CD4+ subset of 3G11 - 6C10- NK1.1 - phenotype possesses immunocompetent cells with functions characteristic of Th2-like cytokines, which may indicate the cells at transitional status from ThO to Th2, with a propensity to Th2.
文摘A murine CD4+ thymocyte subset with phenotype of TCRαβ + 3G11- 6C10- CD4 + CD8- CD69 + /- HSAmed/lo contains the cells in relatively functional matured status. The functional property of the cells in this subset is characterized by the unique pattern of cytokine production at transitional stage from ThO to Th2 type with the latter being the dominant type. After being co-cultured with murine thymic medullary epithelial cell line (MTEC1) cells, a murine
基金T.D.holds a fellowship from the Fonds de Recherche du Québec-Santé(FRQS).L.T.holds scholarships from Universitéde Montréal and CRCHUM.E.P.holds a fellowship from the Multiple Sclerosis Society of Canada(MSSC)and the FRQS.S.Z.is supported by a fellowship from Biogen Canada.C.L.is supported by FRQS.A.P.holds the T1(senior)Canada Research Chair in Multiple Sclerosis.This work was funded by operating grants from the Canadian Institutes of Health Research(MOP 89885,PJI-153195)and from the MSSC(EGID 2382).We thank Jannie Borst for providing us with the CD70−/−mice.We thank Hartmut Wekerle for providing us with the TCR1640 mice.Special thanks to Magdalena Paterka and Volker Siffrin for providing the protocol for CD4+adoptive T cell transfer in RAG null mice.We would also like to thank the imaging platform,the pathology platform,and the flow cytometry platform from the CRCHUM for the excellent technical support and Alice M Roy and Elvia Gonzalez for their excellent technical animal support.
文摘activation.Therefore,engagement of the costimulatory CD27/CD70 pathway is solely dependent on upregulation of CD70.However,the T cell-intrinsic effect and function of human CD70 remain underexplored.Herein,we describe that CD70 expression distinguishes proinflammatory CD4^(+)T lymphocytes that display an increased potential to migrate into the central nervous system(CNS).Upregulation of CD70 on CD4^(+)T lymphocytes is induced by TGF-β1 and TGF-β3,which promote a pathogenic phenotype.In addition,CD70 is associated with a TH1 and TH17 profile of lymphocytes and is important for T-bet and IFN-γexpression by both T helper subtypes.Moreover,adoptive transfer of CD70−/−CD4^(+)T lymphocytes induced less severe experimental autoimmune encephalomyelitis(EAE)disease than transfer of WT CD4^(+)T lymphocytes.CD70+CD4^(+)T lymphocytes are found in the CNS during acute autoimmune inflammation in humans and mice,highlighting CD70 as both an immune marker and an important costimulator of highly pathogenic proinflammatory TH1/TH17 lymphocytes infiltrating the CNS.
