白细胞介素35+调节性B淋巴细胞在川崎病免疫发病机制中的作用  被引量:3

The role of interleukin - 35 - producing regulatory B cells in immune pathogenesis of Kawasaki disease

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作  者:赵俊山[1] 王勤[2] 温鹏强[1] 徐明国[1] 齐中香[1] 李成荣[1] 王国兵[1] 

机构地区:[1]遵义医学院深圳市儿童医院儿科研究所,深圳518038 [2]南方医科大学附属深圳市妇幼保健院中心实验室

出  处:《中华实用儿科临床杂志》2015年第9期662-666,共5页Chinese Journal of Applied Clinical Pediatrics

基  金:国家自然科学基金(81102227,81300124);广东省医学科学技术研究基金(A2012582,A2013604)

摘  要:目的探讨白细胞介素(IL)-35+调节性B淋巴细胞(IL-35+Breg)在川崎病(KD)免疫发病机制中的作用。方法急性期KD患儿32例,同年龄体检健康儿童28例为健康对照组。KD患儿分别于治疗前、治疗后取血备检。采用流式细胞术检测外周血IL-35+Breg、调节性T淋巴细胞(Treg)比例及程序性死亡因子配体1(PD—LI)、CD16q、程序性死亡因子1(PD-1)、CD43、IL-12p35、EB病毒诱导基因3(IL-27EBl3)、IL-12受体B2(IL-12Rβ2)、IL-27受体α(IL-27Rα)、磷酸化信号转导和转录活化因子1(pSTATI)、磷酸化信号转导和转录活化因子3(pSTAT3)蛋白表达水平;实时荧光定量PCR检测CD19-细胞Src同源2结构域蛋白酪氨酸磷酸酶2(SHP-2)、磷酸酶及张力蛋白同源物(PTEN)、vav1鸟嘌呤核苷酸交换因子(Vav)mRNA表达;酶联免疫吸附法检测血浆中IL-35、肿瘤坏死因子α(TNF—α)、IL-12水平。结果1.急性期KD患儿外周血IL-35+Breg细胞比例较健康对照组显著降低[(5.79±2.60)%比(12.65±5.34)%;F=19.23,P〈0.05],其胞内IL-12p35、IL-27EBI3、IL-10表达水平明显低于健康对照组(F=9.70、14.30、7.08,P均〈0.05),经静脉注射丙种球蛋白(IVIG)治疗后显著上调[IL-35+Breg:(10.52±4.95)%;P〈0.05]。2.急性期KD患儿Treg比例及其胞内IL-12p35、IL-27EBl3表达水平明显低于健康对照组[Treg:(4.12±1.51)%比(8.06±3.32)%;F=19.70、17.69、38.22,P均〈0.05],其中Treg与IL-35+Breg细胞比例呈正相关(r:0.69,P〈0.05),血浆IL-35水平及CD19+B淋巴细胞IL-12Rβ2、IL-27Rα、pSTAT1、pSTAT3表达水平均显著降低(F=8.09、7.54、7.69、5.89、12.59,P均〈0.05),经IVIG治疗后明显增高[Treg:(7.39±2.85)%;P均〈0.05]。3.急性期KD患儿CD14+细胞过表达PD—L1、CD169(F=24.94、16.53,P均〈0Objective To investigate the role of IL - 35 - producing regulatory B cells ( IL - 35 + Breg) in im- munological pathogenesis of Kawasaki disease (KD). Methods Thirty - two children with KD and 28 age - matched healthy children were allowed to participate in this study. Flow cytometry was performed to evaluate the proportions of IL - 35 + Breg as well as requlatory T cells (Treg) and expression levels of associated molecules such as programmed death - ligand 1 ( PD - L1 ), CD169, programmed death 1 ( PD - 1 ), CD43, IL - 12p35, epstein - Barr virus induced 3 ( IL - 27EBI3 ). IL - 12 receptor beta 2 ( IL - 12R132), IL - 27 receptor alpha( IL - 27Rot), phosphated signal transdu- cer and activator of transcription 1 ( pSTAT1 ) and phosphated signal transducer and activator of transcription 3 ( pSTAT3 ). Transcription levels of the Src homology 2 domain - containing protein tyrosine phosphatase 2 ( SHP - 2 ), phosphatase and tensin homolog (PTEN) ,vavl guanine nucleotide exchange factor(Vav) in CD19+ B cells were deter- mined by using quantitative real - time PCR. Plasma concentrations of IL - 35, tumor necrosis factor α ( TNF - α) and IL - 12 were measured by adopting enzyme - linked immunosorbent assay. Results ( 1 ) The proportions of IL - 35 + Breg and its expressions of IL - 12p35, IL - 27EBI3 and IL - 10 in patients with acute KD were lower than those of healthy controls [ IL - 35 + Breg: (5.79 ± 2.60) % vs ( 12.65 ± 5.34 ) % ; F = 19.23,9.70,14.30.7.08 ; all P 〈 0. 05 ), but they were significantly increased after intravenous immune globulin ( IVIG ) treatment [ IL - 35 + Breg : (10.52 ± 4.95 )% ;all P 〈 0.05 ]. (2)The proportions of Treg and its transcriptional levels of IL - 12p35 and IL - 27EBI3 were down - regulated during acute KD [ Treg: (4. 12 ± 1.51 ) % vs ( 8.06 ± 3.32 ) % ; F = 19.70,17.69, 38.22 ; all P 〈 0.05 ] , but were increased after therapy [ Treg : ( 7.39 ± 2.85 ) %

关 键 词:白细胞介素35 调节性B淋巴细胞 川崎病 调节性T淋巴细胞 免疫调节 

分 类 号:R725.4[医药卫生—儿科]

 

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