Abnormal NKG2D ligand expression has been implicated in the initiation and maintenance of various auto-inflammatory disorders including systemic lupus erythematosus (SLE). This study’s goal was to identify the cellul...Abnormal NKG2D ligand expression has been implicated in the initiation and maintenance of various auto-inflammatory disorders including systemic lupus erythematosus (SLE). This study’s goal was to identify the cellular contexts providing NKG2D ligands for stimulation of the immunosuppressive NKG2D+CD4 T cell subset that has been implicated in modulating juvenile-onset SLE disease activity. Although previous observations with NKG2D+CD4 T cells in healthy individuals pointed towards peripheral B cell and myeloid cell compartments as possible sites of enhanced NKG2DL presence, we found no evidence for a disease-associated increase of NKG2DL-positivity among juvenile-onset SLE B cells and monocytes. However, juvenile-onset SLE patient plasma and matched urine samples were positive by ELISA for the soluble form of the NKG2D ligands MICA and MICB, suggesting that kidney and/or peripheral blood may constitute the NKG2DL positive microenvironments driving NKG2D+CD4 T cell population expansions in this disease.展开更多
活化性受体NKG2D(natural-killer group 2,member D)及其配体在NK、γδ+T和CD8+T细胞介导的肿瘤免疫应答中扮演了重要角色。深入理解NKG2D及其配体在肿瘤免疫中的作用有助于临床预防和治疗肿瘤。该文阐述了NKG2D的分子结构特性、表达...活化性受体NKG2D(natural-killer group 2,member D)及其配体在NK、γδ+T和CD8+T细胞介导的肿瘤免疫应答中扮演了重要角色。深入理解NKG2D及其配体在肿瘤免疫中的作用有助于临床预防和治疗肿瘤。该文阐述了NKG2D的分子结构特性、表达调控及其配体的分类和表达调控;主要介绍了NKG2D及其配体在肿瘤免疫中的作用;最后分析了NKG2D免疫途径中存在的问题和治疗应用前景。展开更多
目的:探讨NKG2D配体MHC-I类相关分子A(MHC class I-related molecules A,MICA)在中晚期食管癌患者术后化疗联合NK细胞免疫治疗中的作用。方法:福建省肿瘤医院90例中晚期食管癌患者手术后,分为单纯化疗组40例、化疗联合NK细胞治疗MCIA阴...目的:探讨NKG2D配体MHC-I类相关分子A(MHC class I-related molecules A,MICA)在中晚期食管癌患者术后化疗联合NK细胞免疫治疗中的作用。方法:福建省肿瘤医院90例中晚期食管癌患者手术后,分为单纯化疗组40例、化疗联合NK细胞治疗MCIA阴性组(简称MICA-组)25例及化疗联合NK细胞治疗MICA阳性组(简称MICA+组)25例,比较其疗效。结果:与单纯化疗组及MICA-组相比,MICA+组CD3+、CD4+T细胞阳性率、NK细胞阳性率及CD4+/CD8+比率明显高于治疗前[(64.2±6.4)%vs(51.3±5.6)%,(39.8±8.2)%vs(29.5±3.2)%,(25.3±2.1)%vs(16.4±4.3)%,(1.4±0.5)vs(1.1±0.7);均P<0.05],T-reg细胞明显低于治疗前[(6.3±4.5)%vs(17.3±2.4)%,P<0.05]。3组疾病控制率及有效率无明显差异(P>0.05)。MICA+组KPS评分治疗后明显提高,MICA+组能明显改善化疗引起的白细胞减少、外周神经毒性症状,MICA+组疾病进展时间(time to progression,TTP)及总体生存时间(overall survival,OS)均明显延长(均P<0.05)。但单纯化疗组及MICA-组之间差异无统计学意义(P>0.05)。结论:食管癌组织MICA表达阳性的中晚期患者进行化疗联合自体NK细胞能有效能有效提高免疫力,改善患者生活质量,并能延长生存期,且回输安全、不良反应小。展开更多
文摘Abnormal NKG2D ligand expression has been implicated in the initiation and maintenance of various auto-inflammatory disorders including systemic lupus erythematosus (SLE). This study’s goal was to identify the cellular contexts providing NKG2D ligands for stimulation of the immunosuppressive NKG2D+CD4 T cell subset that has been implicated in modulating juvenile-onset SLE disease activity. Although previous observations with NKG2D+CD4 T cells in healthy individuals pointed towards peripheral B cell and myeloid cell compartments as possible sites of enhanced NKG2DL presence, we found no evidence for a disease-associated increase of NKG2DL-positivity among juvenile-onset SLE B cells and monocytes. However, juvenile-onset SLE patient plasma and matched urine samples were positive by ELISA for the soluble form of the NKG2D ligands MICA and MICB, suggesting that kidney and/or peripheral blood may constitute the NKG2DL positive microenvironments driving NKG2D+CD4 T cell population expansions in this disease.
文摘活化性受体NKG2D(natural-killer group 2,member D)及其配体在NK、γδ+T和CD8+T细胞介导的肿瘤免疫应答中扮演了重要角色。深入理解NKG2D及其配体在肿瘤免疫中的作用有助于临床预防和治疗肿瘤。该文阐述了NKG2D的分子结构特性、表达调控及其配体的分类和表达调控;主要介绍了NKG2D及其配体在肿瘤免疫中的作用;最后分析了NKG2D免疫途径中存在的问题和治疗应用前景。
文摘目的:探讨NKG2D配体MHC-I类相关分子A(MHC class I-related molecules A,MICA)在中晚期食管癌患者术后化疗联合NK细胞免疫治疗中的作用。方法:福建省肿瘤医院90例中晚期食管癌患者手术后,分为单纯化疗组40例、化疗联合NK细胞治疗MCIA阴性组(简称MICA-组)25例及化疗联合NK细胞治疗MICA阳性组(简称MICA+组)25例,比较其疗效。结果:与单纯化疗组及MICA-组相比,MICA+组CD3+、CD4+T细胞阳性率、NK细胞阳性率及CD4+/CD8+比率明显高于治疗前[(64.2±6.4)%vs(51.3±5.6)%,(39.8±8.2)%vs(29.5±3.2)%,(25.3±2.1)%vs(16.4±4.3)%,(1.4±0.5)vs(1.1±0.7);均P<0.05],T-reg细胞明显低于治疗前[(6.3±4.5)%vs(17.3±2.4)%,P<0.05]。3组疾病控制率及有效率无明显差异(P>0.05)。MICA+组KPS评分治疗后明显提高,MICA+组能明显改善化疗引起的白细胞减少、外周神经毒性症状,MICA+组疾病进展时间(time to progression,TTP)及总体生存时间(overall survival,OS)均明显延长(均P<0.05)。但单纯化疗组及MICA-组之间差异无统计学意义(P>0.05)。结论:食管癌组织MICA表达阳性的中晚期患者进行化疗联合自体NK细胞能有效能有效提高免疫力,改善患者生活质量,并能延长生存期,且回输安全、不良反应小。
