1.华中科技大学协和深圳医院血液科,广东 深圳518052
2.南华大学附属第一医院血液科,湖南 衡阳 421001
3.深圳大学第二附属医院骨科中心,广东 深圳 518101
肖建红,博士,副主任医师,研究方向:原发免疫性血小板减少症的基础和临床,E-mail:xiaoxiaouser@163.com
纸质出版日期:2022-07-20,
收稿日期:2022-01-10,
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肖建红,张阳春.脂肪来源间充质干细胞调控原发免疫性血小板减少症小鼠Th细胞因子失衡[J].中山大学学报(医学科学版),2022,43(04):563-572.
XIAO Jian-hong,ZHANG Yang-chun.Immunoregulation of Adipose-derived Mesenchymal Stem Cells on Th Cytokines in Primary Immune Thrombocytopenic Mice[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(04):563-572.
肖建红,张阳春.脂肪来源间充质干细胞调控原发免疫性血小板减少症小鼠Th细胞因子失衡[J].中山大学学报(医学科学版),2022,43(04):563-572. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0406.
XIAO Jian-hong,ZHANG Yang-chun.Immunoregulation of Adipose-derived Mesenchymal Stem Cells on Th Cytokines in Primary Immune Thrombocytopenic Mice[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(04):563-572. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0406.
目的
2
探讨脂肪来源的间充质干细胞(AMSCs)对原发免疫性血小板减少症(ITP)小鼠Th细胞因子失衡免疫调节变化及其特异性转录因子T盒子转录因子/ GATA结合蛋白3(T-bet/GATA-3)的影响,并初步探讨其相关机制。
方法
2
选取人来源健康脂肪组织,分离培养AMSCs,观察生长形态和干细胞鉴定,选取增长稳定的传代AMSCs;将30只BALB/c小鼠随机分为正常对照组(Normal组)、ITP对照组(ITP/PBS组)及ITP实验组(ITP/AMSC组)并进行相应的处理,观察AMSCs对ITP实验组小鼠的治疗作用,Th1/Th2 细胞因子及特异性转录因子表达变化,并进行对比分析。
结果
2
①获取的 AMSCs 增殖稳定,细胞表面抗原分子CD29、CD44及CD105高表达,CD14及CD45低表达,并鉴定具有多向分化能力,符合AMSCs 细胞学特征。②通过AMSCs治疗,ITP实验组小鼠皮肤出血瘀斑明显改善,其血小板水平、Th2细胞转录因子GATA-3 mRNA表达及Th2因子IL-4及IL-10水平高于ITP对照组,同时Th1细胞转录因子T-bet mRNA及Th1因子IL-2、IFN-γ表达下降 (均
P
<
0.001)。
结论
2
ITP小鼠存在Th1/Th2细胞因子免疫失衡,以Th1细胞因子占主导的自身免疫性疾病,AMSCs 可能通过对Th细胞的T-bet/GATA-3的转录调控,减少Th1 因子分泌、增加Th2 因子分泌,改善ITP免疫失衡,提高血小板水平。
Objective
2
To explore the effects and the related mechanisms of AMSCs on Th cytokines and its specific transcription factors T-bet/GATA-3 in mice with ITP.
Methods
2
Healthy adipose tissues from human selected aforehand were used for isolation and culture of AMSCs. Then its growth morphology and stem-cell identification were observed, and the AMSCs with a stable growth situation were selected for next step test. Thirty BALB/c mice were randomly divided into the normal control group (Normal group), ITP control group (ITP/PBS group) and ITP experimental group (ITP/AMSC group), and treated accordingly to observe the therapeutic effect of AMSCs on ITP mice. The expressions of Th1/Th2 cytokines and the specific transcription factors were analyzed.
Results
2
①The obtained AMSCs proliferated stably with high expression of cell surface antigen molecules of CD29, CD44 and CD105, and low expression of CD14 and CD45. And the AMSCs were identified to have multidirectional differentiation ability, which was consistent with the cytological characteristics of AMSCs. ②After AMSCs treatment, skin bleeding of ITP mice was significantly alleviated, and the platelet level, Th2 transcription factor GATA-3 mRNA expression and Th2 factors IL-4 and IL-10 levels were higher than those in the ITP control group. At the same time, the expression of Th1 transcription factor T-bet mRNA and Th1 factors IL-2 and IFN-γ in the ITP experimental group decreased (all
P
<
0.001).
Conclusions
2
There is the immune imbalance of Th1/Th2 cytokines in ITP mice. As a autoimmune disease and dominated by Th1 cytokines for ITP, AMSCs could reduce Th1 cytokines secretion and increase Th2 cytokines secretion by regulating T-bet/GATA-3, thus redressing the immune imbalance of ITP and improving platelet level.
脂肪间充质干细胞原发免疫性血小板减少症Th1/Th2细胞因子T盒子转录因子/GATA结合蛋白3免疫调节
adipose-derived mesenchymal stem cellsprimary immune thrombocytopeniaTh1/Th2 cytokinesT-box transcription factor/GATA binding protein 3immunoregulation
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