目的分析CD4^+CD29^+T细胞含量及细胞毒性T淋巴细胞相关抗原4(CTLA-4)、程序坏死因子1(PD-1)及程序坏死因子配体1(PD-L1)免疫检查点表达水平与非小细胞肺癌患者的化疗效果及远期存活率的关系。方法选取2015年1月至2017年1月沧州市中心...目的分析CD4^+CD29^+T细胞含量及细胞毒性T淋巴细胞相关抗原4(CTLA-4)、程序坏死因子1(PD-1)及程序坏死因子配体1(PD-L1)免疫检查点表达水平与非小细胞肺癌患者的化疗效果及远期存活率的关系。方法选取2015年1月至2017年1月沧州市中心医院收治的100例非小细胞肺癌患者;采用流式细胞术检测患者血中CD4^+CD29^+T、CTLA-4^+T、PD-1^+T及PD-L1^+T细胞水平;随访2年,记录患者生存情况,分为存活组79例,死亡组21例;依照RECIST Version 1.1标准对患者化疗效果进行评估,并按此分为缓解组54例,进展组46例。比较各组的CD4+CD29+T、CTLA-4^+T、PD-1^+T及PD-L1^+T细胞水平,分析以上各细胞水平与患者疗效及远期存活率之间的相关关系。结果化疗缓解组CD4^+CD29^+T、CTLA-4^+T及PD-1^+T细胞水平均高于进展组[(22.74±1.92)%vs.(18.04±2.15)%、(28.91±1.24)%vs.(20.13±1.77)%、(26.29±1.19)%vs.(18.94±1.64)%],PD-L1+T细胞水平低于进展组[(17.22±1.07)%vs.(22.73±1.25)%],差异均有统计学意义(P<0.05);存活组CD4+CD29+T、CTLA-4+T及PD-1+T细胞水平均高于死亡组[(22.11±1.17)%vs.(14.81±1.64)%、(28.32±1.24)%vs.(11.90±1.93)%、(25.88±2.01)%vs.(11.73±2.06)%],PD-L1+T细胞水平低于死亡组[(16.41±2.72)%vs.(24.81±2.11)%],差异均有统计学意义(P<0.05)。CD4^+CD29^+T、CTLA-4^+T、PD-1^+T细胞水平与患者疗效及远期存活率呈正相关(P<0.05),PD-L1^+T细胞水平与患者疗效及远期存活率呈负相关(P<0.05)。结论非小细胞肺癌患者血中CD4^+CD29^+、CTLA-4^+、PD-1^+T细胞水平与化疗效果及远期生存呈正相关,PD-L1+T细胞水平与其呈负相关关系。展开更多
AIM:To investigate the anti-inflammatory effects of cinnamon extract and elucidate its mechanisms for targeting the function of antigen presenting cells.METHODS:Cinnamon extract was used to treat murine macrophage cel...AIM:To investigate the anti-inflammatory effects of cinnamon extract and elucidate its mechanisms for targeting the function of antigen presenting cells.METHODS:Cinnamon extract was used to treat murine macrophage cell line(Raw 264.7),mouse primary antigen-presenting cells(APCs,MHCII+) and CD11c+dendritic cells to analyze the effects of cinnamon extract on APC function.The mechanisms of action of cinnamon extract on APCs were investigated by analyzing cytokine production,and expression of MHC antigens and co-stimulatory molecules by quantitative real-time PCR and flow cytometry.In addition,the effect of cinnamon extract on antigen presentation capacity and APC-dependent T-cell differentiation were analyzed by [H3]-thymidine incorporation and cytokine analysis,respectively.To confirm the anti-inflammatory effects of cinnamon extract in vivo,cinnamon or PBS was orally administered to mice for 20 d followed by induction of experimental colitis with 2,4,6 trinitrobenzenesulfonic acid.The protective effects of cinnamon extract against experimental colitis were measured by checking clinical symptoms,histological analysis and cytokine expression prof iles in inflamed tissue.RESULTS:Treatment with cinnamon extract inhibited maturation of MHCII+ APCs or CD11c+ dendritic cells(DCs) by suppressing expression of co-stimulatory molecules(B7.1,B7.2,ICOS-L),MHCII and cyclooxygenase(COX)-2.Cinnamon extract induced regulatory DCs(rDCs) that produce low levels of pro-inflammatory cytokines [interleukin(IL)-1β,IL-6,IL-12,interferon(IFN)-γ and tumor necrosis factor(TNF)-α] while expressing high levels of immunoregulatory cytokines(IL-10 and transforming growth factor-β).In addition,rDCs generated by cinnamon extract inhibited APC-dependent T-cell proliferation,and converted CD4+ T cells into IL-10high CD4+ T cells.Furthermore,oral administration of cinnamon extract inhibited development and progression of intestinal colitis by inhibiting expression of COX-2 and pro-inflammatory cytokines(IL-1β,IFN-γ and TNF-α),while enhancing IL-10 levels.CONCLUSION:Our study suggests the potential of cinnamon extract as an anti-inflammatory agent by targeting the generation of regulatory APCs and IL-10+ regulatory T cells.展开更多
AIM: To evaluate the role of baicalin in ulcerative colitis (UC) with regard to the CD4<sup>+</sup>CD29<sup>+</sup> T helper cell, its surface markers and serum inflammatory cytokines.
INTRODUCTIONSialyl Lewis-X antigen ,correlated with carcinoma, is a group of carbohydrate antigen containing oligosaccharide expressed of embryonic tisue and glycoproteins on cell surface of embryonic tissue[1].The SL...INTRODUCTIONSialyl Lewis-X antigen ,correlated with carcinoma, is a group of carbohydrate antigen containing oligosaccharide expressed of embryonic tisue and glycoproteins on cell surface of embryonic tissue[1].The SLeX antigen located on cell surface is synthesized principally by two enzymes ,al ,3fucosyltransfrease and a2, 3sialyctransferase.In adults ,SLeX antigen is expressed principally on the surfaces of granulocytic cells and some tumor cells .展开更多
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
Porcine reproductive and respiratory syndrome(PRRS) is one of the most important diseases of swine industry. The causal agent, PRRS-virus(PRRSV), is able to evade the host immune response and survive in the organism c...Porcine reproductive and respiratory syndrome(PRRS) is one of the most important diseases of swine industry. The causal agent, PRRS-virus(PRRSV), is able to evade the host immune response and survive in the organism causing transient infections. Despite all scientific efforts, there are still some gaps in the knowledge of the pathogenesis of this disease. Antigen presenting cells(APCs), as initiators of the immune response, are located in the first line of defense against microorganisms, and are responsible for antigen recognition, processing and presentation. Dendritic cells(DCs) are the main type of APC involved in antigen presentation and they are susceptible to PRRSV infection. Thus, PRRSV replication in DCs may trigger off different mechanisms to impair the onset of a host effective immune response against the virus. On the one side, PRRSV may impair the basic functions of DCs by regulating the expression of major histocompatibility complex class Ⅱ and CD80/86. Other strategy followed by the virus is the induction of cell death of APCs by apoptosis, necrosis or both of them. The impairment and/or cell death ofAPCs could lead to a failure in the onset of an efficient immune response, as long as cells could not properly activate T cells. Future aspects to take into account are also discussed in this review.展开更多
文摘目的分析CD4^+CD29^+T细胞含量及细胞毒性T淋巴细胞相关抗原4(CTLA-4)、程序坏死因子1(PD-1)及程序坏死因子配体1(PD-L1)免疫检查点表达水平与非小细胞肺癌患者的化疗效果及远期存活率的关系。方法选取2015年1月至2017年1月沧州市中心医院收治的100例非小细胞肺癌患者;采用流式细胞术检测患者血中CD4^+CD29^+T、CTLA-4^+T、PD-1^+T及PD-L1^+T细胞水平;随访2年,记录患者生存情况,分为存活组79例,死亡组21例;依照RECIST Version 1.1标准对患者化疗效果进行评估,并按此分为缓解组54例,进展组46例。比较各组的CD4+CD29+T、CTLA-4^+T、PD-1^+T及PD-L1^+T细胞水平,分析以上各细胞水平与患者疗效及远期存活率之间的相关关系。结果化疗缓解组CD4^+CD29^+T、CTLA-4^+T及PD-1^+T细胞水平均高于进展组[(22.74±1.92)%vs.(18.04±2.15)%、(28.91±1.24)%vs.(20.13±1.77)%、(26.29±1.19)%vs.(18.94±1.64)%],PD-L1+T细胞水平低于进展组[(17.22±1.07)%vs.(22.73±1.25)%],差异均有统计学意义(P<0.05);存活组CD4+CD29+T、CTLA-4+T及PD-1+T细胞水平均高于死亡组[(22.11±1.17)%vs.(14.81±1.64)%、(28.32±1.24)%vs.(11.90±1.93)%、(25.88±2.01)%vs.(11.73±2.06)%],PD-L1+T细胞水平低于死亡组[(16.41±2.72)%vs.(24.81±2.11)%],差异均有统计学意义(P<0.05)。CD4^+CD29^+T、CTLA-4^+T、PD-1^+T细胞水平与患者疗效及远期存活率呈正相关(P<0.05),PD-L1^+T细胞水平与患者疗效及远期存活率呈负相关(P<0.05)。结论非小细胞肺癌患者血中CD4^+CD29^+、CTLA-4^+、PD-1^+T细胞水平与化疗效果及远期生存呈正相关,PD-L1+T细胞水平与其呈负相关关系。
基金Supported by Grants from the BioGreen 21 Program, Rural Development Administration (PJ007054)Regional Technology Innovation Program of the MOCIE (RTI05-01-01)Korea Healthcare Technology R&D Project, Ministry of Health and Welfare (A080588-20)
文摘AIM:To investigate the anti-inflammatory effects of cinnamon extract and elucidate its mechanisms for targeting the function of antigen presenting cells.METHODS:Cinnamon extract was used to treat murine macrophage cell line(Raw 264.7),mouse primary antigen-presenting cells(APCs,MHCII+) and CD11c+dendritic cells to analyze the effects of cinnamon extract on APC function.The mechanisms of action of cinnamon extract on APCs were investigated by analyzing cytokine production,and expression of MHC antigens and co-stimulatory molecules by quantitative real-time PCR and flow cytometry.In addition,the effect of cinnamon extract on antigen presentation capacity and APC-dependent T-cell differentiation were analyzed by [H3]-thymidine incorporation and cytokine analysis,respectively.To confirm the anti-inflammatory effects of cinnamon extract in vivo,cinnamon or PBS was orally administered to mice for 20 d followed by induction of experimental colitis with 2,4,6 trinitrobenzenesulfonic acid.The protective effects of cinnamon extract against experimental colitis were measured by checking clinical symptoms,histological analysis and cytokine expression prof iles in inflamed tissue.RESULTS:Treatment with cinnamon extract inhibited maturation of MHCII+ APCs or CD11c+ dendritic cells(DCs) by suppressing expression of co-stimulatory molecules(B7.1,B7.2,ICOS-L),MHCII and cyclooxygenase(COX)-2.Cinnamon extract induced regulatory DCs(rDCs) that produce low levels of pro-inflammatory cytokines [interleukin(IL)-1β,IL-6,IL-12,interferon(IFN)-γ and tumor necrosis factor(TNF)-α] while expressing high levels of immunoregulatory cytokines(IL-10 and transforming growth factor-β).In addition,rDCs generated by cinnamon extract inhibited APC-dependent T-cell proliferation,and converted CD4+ T cells into IL-10high CD4+ T cells.Furthermore,oral administration of cinnamon extract inhibited development and progression of intestinal colitis by inhibiting expression of COX-2 and pro-inflammatory cytokines(IL-1β,IFN-γ and TNF-α),while enhancing IL-10 levels.CONCLUSION:Our study suggests the potential of cinnamon extract as an anti-inflammatory agent by targeting the generation of regulatory APCs and IL-10+ regulatory T cells.
基金Supported by National Natural Science Foundation of Chinunder Grant No.30772701
文摘AIM: To evaluate the role of baicalin in ulcerative colitis (UC) with regard to the CD4<sup>+</sup>CD29<sup>+</sup> T helper cell, its surface markers and serum inflammatory cytokines.
文摘INTRODUCTIONSialyl Lewis-X antigen ,correlated with carcinoma, is a group of carbohydrate antigen containing oligosaccharide expressed of embryonic tisue and glycoproteins on cell surface of embryonic tissue[1].The SLeX antigen located on cell surface is synthesized principally by two enzymes ,al ,3fucosyltransfrease and a2, 3sialyctransferase.In adults ,SLeX antigen is expressed principally on the surfaces of granulocytic cells and some tumor cells .
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.
基金Supported by The Spanish Ministry of Education and Science,No.AGL2009-12438/GAN
文摘Porcine reproductive and respiratory syndrome(PRRS) is one of the most important diseases of swine industry. The causal agent, PRRS-virus(PRRSV), is able to evade the host immune response and survive in the organism causing transient infections. Despite all scientific efforts, there are still some gaps in the knowledge of the pathogenesis of this disease. Antigen presenting cells(APCs), as initiators of the immune response, are located in the first line of defense against microorganisms, and are responsible for antigen recognition, processing and presentation. Dendritic cells(DCs) are the main type of APC involved in antigen presentation and they are susceptible to PRRSV infection. Thus, PRRSV replication in DCs may trigger off different mechanisms to impair the onset of a host effective immune response against the virus. On the one side, PRRSV may impair the basic functions of DCs by regulating the expression of major histocompatibility complex class Ⅱ and CD80/86. Other strategy followed by the virus is the induction of cell death of APCs by apoptosis, necrosis or both of them. The impairment and/or cell death ofAPCs could lead to a failure in the onset of an efficient immune response, as long as cells could not properly activate T cells. Future aspects to take into account are also discussed in this review.
