中华微生物学和免疫学杂志
中華微生物學和免疫學雜誌
중화미생물학화면역학잡지
CHINESE JOURNAL OF MICROBIOLOGY AND IMMUNOLOGY
2013年
11期
828-832
,共5页
徐敏%王椋%刘国强%鲁光%丁慧芳%邢健%赵霞%韩芳%尚应辉
徐敏%王椋%劉國彊%魯光%丁慧芳%邢健%趙霞%韓芳%尚應輝
서민%왕량%류국강%로광%정혜방%형건%조하%한방%상응휘
间充质干细胞%免疫性血小板减少症%小鼠%转录因子T-bet%转录因子GATA-3
間充質榦細胞%免疫性血小闆減少癥%小鼠%轉錄因子T-bet%轉錄因子GATA-3
간충질간세포%면역성혈소판감소증%소서%전록인자T-bet%전록인자GATA-3
Mesenchymal stem cells%Immune-mediated thrombocytopenia%Mice%Transcription factor T-bet%Transcription factor GATA-3
目的:探讨间充质干细胞( MSC)对原发免疫性血小板减少症( ITP)小鼠血小板数目的影响及其机制。方法采用腹腔注射大鼠抗小鼠CD41抗体( MWReg30单抗)的方法诱导BALB/c小鼠产生ITP后,取20只作为实验组,20只作为对照组。之后通过鼠尾静脉给实验组小鼠注射MSC 2×107个/只。注射后5 d、7 d、14 d,测定实验组与对照组小鼠外周血血小板数;14 d时应用逆转录聚合酶链反应( RT-PCR)检测小鼠外周血单个核细胞( PBMC)中转录因子T-bet和GATA-3 mRNA的表达;应用酶联免疫法测定Th1类细胞因子IFN-γ、IL-2及Th2类细胞因子IL-4、IL-10的水平。结果7 d、14 d后,注射MSC实验组小鼠血小板值[(588.0±81.6)×109/L、(623.0±78.9)×109/L]明显高于未注射MSC对照组[(317.0±90.1)×109/L、(288.0±87.8)×109/L](P<0.05);14 d时,实验组PBMC中T-bet mRNA表达水平低于对照组[(0.04±0.03) vs (0.27±0.05)](P<0.05);GATA-3 mRNA的表达水平高于对照组[(0.14±0.04) vs (0.07±0.05)](P<0.05);实验组Th1类细胞因子IFN-γ、IL-2水平[(3.1±1.7) pg/ml、(3.2±2.1) pg/ml]明显低于对照组[(10.3±4.8) pg/ml、(16.3±5.7) pg/ml](P<0.05);实验组外周血 Th2类细胞因子 IL-4、IL-10水平[(88.6±15.2) pg/ml、(38.3±11.8) pg/ml]明显高于对照组[(32.7±5.7) pg/ml、(22.1±3.4) pg/ml](P<0.05)。结论 MSC可以有效提升ITP小鼠的血小板数,机制可能与抑制了T-bet和GATA-3的表达失常导致的Th1细胞极化有关。
目的:探討間充質榦細胞( MSC)對原髮免疫性血小闆減少癥( ITP)小鼠血小闆數目的影響及其機製。方法採用腹腔註射大鼠抗小鼠CD41抗體( MWReg30單抗)的方法誘導BALB/c小鼠產生ITP後,取20隻作為實驗組,20隻作為對照組。之後通過鼠尾靜脈給實驗組小鼠註射MSC 2×107箇/隻。註射後5 d、7 d、14 d,測定實驗組與對照組小鼠外週血血小闆數;14 d時應用逆轉錄聚閤酶鏈反應( RT-PCR)檢測小鼠外週血單箇覈細胞( PBMC)中轉錄因子T-bet和GATA-3 mRNA的錶達;應用酶聯免疫法測定Th1類細胞因子IFN-γ、IL-2及Th2類細胞因子IL-4、IL-10的水平。結果7 d、14 d後,註射MSC實驗組小鼠血小闆值[(588.0±81.6)×109/L、(623.0±78.9)×109/L]明顯高于未註射MSC對照組[(317.0±90.1)×109/L、(288.0±87.8)×109/L](P<0.05);14 d時,實驗組PBMC中T-bet mRNA錶達水平低于對照組[(0.04±0.03) vs (0.27±0.05)](P<0.05);GATA-3 mRNA的錶達水平高于對照組[(0.14±0.04) vs (0.07±0.05)](P<0.05);實驗組Th1類細胞因子IFN-γ、IL-2水平[(3.1±1.7) pg/ml、(3.2±2.1) pg/ml]明顯低于對照組[(10.3±4.8) pg/ml、(16.3±5.7) pg/ml](P<0.05);實驗組外週血 Th2類細胞因子 IL-4、IL-10水平[(88.6±15.2) pg/ml、(38.3±11.8) pg/ml]明顯高于對照組[(32.7±5.7) pg/ml、(22.1±3.4) pg/ml](P<0.05)。結論 MSC可以有效提升ITP小鼠的血小闆數,機製可能與抑製瞭T-bet和GATA-3的錶達失常導緻的Th1細胞極化有關。
목적:탐토간충질간세포( MSC)대원발면역성혈소판감소증( ITP)소서혈소판수목적영향급기궤제。방법채용복강주사대서항소서CD41항체( MWReg30단항)적방법유도BALB/c소서산생ITP후,취20지작위실험조,20지작위대조조。지후통과서미정맥급실험조소서주사MSC 2×107개/지。주사후5 d、7 d、14 d,측정실험조여대조조소서외주혈혈소판수;14 d시응용역전록취합매련반응( RT-PCR)검측소서외주혈단개핵세포( PBMC)중전록인자T-bet화GATA-3 mRNA적표체;응용매련면역법측정Th1류세포인자IFN-γ、IL-2급Th2류세포인자IL-4、IL-10적수평。결과7 d、14 d후,주사MSC실험조소서혈소판치[(588.0±81.6)×109/L、(623.0±78.9)×109/L]명현고우미주사MSC대조조[(317.0±90.1)×109/L、(288.0±87.8)×109/L](P<0.05);14 d시,실험조PBMC중T-bet mRNA표체수평저우대조조[(0.04±0.03) vs (0.27±0.05)](P<0.05);GATA-3 mRNA적표체수평고우대조조[(0.14±0.04) vs (0.07±0.05)](P<0.05);실험조Th1류세포인자IFN-γ、IL-2수평[(3.1±1.7) pg/ml、(3.2±2.1) pg/ml]명현저우대조조[(10.3±4.8) pg/ml、(16.3±5.7) pg/ml](P<0.05);실험조외주혈 Th2류세포인자 IL-4、IL-10수평[(88.6±15.2) pg/ml、(38.3±11.8) pg/ml]명현고우대조조[(32.7±5.7) pg/ml、(22.1±3.4) pg/ml](P<0.05)。결론 MSC가이유효제승ITP소서적혈소판수,궤제가능여억제료T-bet화GATA-3적표체실상도치적Th1세포겁화유관。
Objective To explore the effects of mesenchymal stem cells ( MSC ) treatment on platelet counts in mice with immune-mediated thrombocytopenia ( ITP) and the possible mechanism .Meth-ods ITP was induced by daily intraperitoneal injection of anti-platelet membrane CD 41 antibody (MWReg30) into BALB/c mice.The mice were then divided into experiment and control groups with 20 mice in each.Each mouse in experimental group was injected with 2×107 mesenchymal stem cells (MSC) through the tail vein .The numbers of blood platelets in mice from two groups were counted on days 5, 7 and 14 after MSC injection .Reverse transcriptase polymerase chain reaction ( RT-PCR) was performed to meas-ure T-bet and GATA-3 gene expression in peripheral blood mononuclear cells ( PBMCs ) at mRNA level on day 14.The levels of IFN-γ, IL-2, IL-4 and IL-10 in serum were detected by ELISA .Results The platelet counts in experimental group were significantly higher than those in control group on days 7 and 14 after MSC injection [(588.0±81.6)×109/L and (623.0±78.9) ×109/L vs.(317.0±90.1) ×109/L and (288.0± 87.8)×109/L ] (P<0.05).On day 14 after MSC injection, the T-bet expression at mRNA level in PBMCs from mice in experimental group was significantly lower than that in control group [(0.04±0.03) vs.(0.27 ±0.05)] (P<0.05), while the GATA-3 expression at mRNA level was higher than those in control group [ (0.14±0.04) vs.(0.07±0.05)] (P<0.05).Compared with control group, the concentrations of Th1 type cytokines such as IFN-γand IL-2 were remarkably down-regulated in experimental group [(3.1±1.7) pg/ml and (3.2±2.1) pg/ml vs.(10.3±4.8) pg/ml and (16.3±5.7) pg/ml](P<0.05), while the con-centrations of Th2 type cytokines such as IL-4 and IL-10 were up-regulated in experimental group [(88.6± 15.2) pg/ml and (38.3±11.8) pg/ml vs.(32.7±5.7) pg/ml and (22.1±3.4) pg/ml ] (P<0.05). Conclusion MSC treatment can effectively increase platelet counts in mice with immune-mediated thrombo-cytopenia, which may be associated with the suppression of Th 1-dominant response mediated by abnormal ex-pression of T-bet and GATA-3.