Summary

从初级人类的幼稚和记忆T细胞的诱导调节性T细胞的生成

Published: April 16, 2012
doi:

Summary

我们描述了从一个单一的人献血的监管,内存和幼稚T细胞产生的一种方法。极化调节性T细胞可以比较多种遗传同质性,这里还详细介绍了包括抑制法与遗传和功能应用中的其他子集。

Abstract

免疫的CD4 +调节性T细胞(Tregs)的开发和维护,促进周边的宽容,需要保持大量对人体的自我和共生抗原在免疫稳态。调节性T细胞和炎症常规T细胞之间的平衡扰动可导致免疫病理或癌症。虽然已被证明是4几个根本的分歧在人类与小鼠的调节性T细胞生物学5 1,I型糖尿病类风湿关节炎和移植物抗宿主病,结肠炎的小鼠模型中的有效调节性T细胞治疗注射迄今排除了临床使用。由于缺乏足够数量,纯度,稳定性和特异性治疗调节性T细胞归巢的需要Treg的人类发展的动力平台上,以优化条件下体外扩增 6。

在这里,我们倒是描述一个从一个单一的人外周血献血,其中可分为四个阶段的分化诱导调节性T细胞(iTregs)分离外周血单个核细胞,CD4 + T细胞磁性选择的方法: 在体外细胞培养和荧光激活T细胞亚群细胞分选(FACS)。由于Treg的签名转录因子叉头框P3(FOXP3)是人类7激活诱导的转录因子,并没有其他存在独特的标记,标记的组合面板必须用于识别与抑制活性的T细胞。 6天培养后,细胞在我们的系统可以被划分成幼稚T细胞,记忆T细胞或基于其相对表达CD25,CD45RA的iTregs。由于内存和幼稚T细胞有不同的极化要求和可塑性8,牛逼成CD45RA +和CD45RO细胞人口的初始预分拣+亚群可以E中检查这些差异。与他人一致,CD25表达 CD45RA的 iTregs快递高水平的FOXP3 9,GITR和CTLA-4的第11和CD127 12的水平低。按照每个人口的流式细胞仪,由此产生的细胞可用于在评估相对延缓羧基琥珀酰亚胺酯(CFSE)标记的自体T细胞增殖能力的抑制实验。

Protocol

1。分离人外周血单个核细胞(单核细胞从白膜) 从医院或附近的血液中心位置,获得一个单位白膜。我们的血液中心提供约40-60毫升单位正常献血者中获得的棕黄色大衣。 倒入蒸压500毫升玻璃瓶含无菌PBS稀释白膜血。最终体积的PBS +白膜应该是250毫升。 装满十50​​ ml锥形管各20毫升Lymphoprep的解决方案。 轻轻覆盖25毫升稀释白膜Lymphoprep解决方案,小心不扰乱Lymphoprep?…

Discussion

虽然拥有巨大的调节性T细胞的转移在打击自身免疫排斥反应和其他免疫或炎症介导的疾病,其高效发电和维护稳定的方法治疗的承诺尚未开发。由于只有1-5%的循环人类T细胞是调节性T细胞,他们控制的扩张和分化克服这种缺乏作为实施调节性T细胞进入临床的主要威慑。另一方面,我们从审判13 TGN1412了解到,这是科学和伦理的必要深入了解分子事件,编排实施任何治疗方案之前,人类T?…

Declarações

The authors have nothing to disclose.

Acknowledgements

<p class="jove_content"作者希望感谢他们协助流式细胞仪分析和排序詹妮弗怪和格雷格·鲍曼。这项工作得到了NIH的资助从NCRR 2P20 RR020171和大学由肯塔基启动资金调频; GIE位承认总统的研究生奖学金和肯塔基机遇奖学金的支持。</p

Materials

Name of the reagent Company Catalogue Number Comments
Lymphoprep Axis-Shield 1114547 Keep at room temperature
Refrigerated Bench-Top Centrifuge Eppendorf 5810R  
Bright-Line Hemocytometer Hausser Scientific 3110  
EasySep Human CD4+ T Cell Enrichment Kit Stem Cell Technologies 19052  
EasySep Human Memory CD4+ T Cell Enrichment Kit Stem Cell Technologies 19157  
EasySep Human Naïve CD4+ T Cell Enrichment Kit Stem Cell Technologies 19155  
The Big Easy EasySep Magnet Stem Cell Technologies 18001 Silver
5 mL Round Bottom Polystyrene Tubes BD Falcon 352008  
15 mL Polypropylene Centrifuge Tubes VWR 89004-368  
14 mL Polypropylene Round-Bottom Tubes BD Falcon 352059  
50 mL Polypropylene Centrifuge Tubes VWR 89004-364  
Human anti-CD3 Antibody Bio X Cell BE0001-2 Clone: OKT3
24 Well Cell Polystyrene Culture Plate BD Falcon 353047  
96 Well Round Bottom Tissue Culture Plate Grenier Bio-One 650180  
RPMI 1640 with Glutamax-I and HEPES Buffer Gibco 72400  
Fetal Bovine Serum (FBS) Gibco 16000  
β-Mercaptoethanol Sigma M7522  
Recombinant Human TGF-β1 eBioscience 14-8348-62  
Recombinant Human IL-2 eBioscience 14-8029-63  
Bovine Serum Albumin (BSA) MP Biomedicals Inc. 810531  
0.5 M EDTA Amresco E177  
Mouse Anti-Human CD25-PE Miltenyi Biotec 130-091-024 Clone: 4E3
Mouse Anti-Human CD45RA-PE-Cy5 eBioscience 15-0458-42 Clone: HI100
Mouse Anti-Human CD127-APC Miltenyi Biotec 130-094-890 Clone: MB15-18C9
DNase II MP Biomedicals Inc. 190370  
MoFlo Flow Cytometer Beckman Coulter    
FlowJo Software Tree Star, Inc.    
Cell Quest Pro Software BD Biosciences    
Newborn Calf Serum Gibco 16010  
L-glutamine Gibco 25030  
AIM-V Gibco 0870112  
CellTrace CFSE Cell Proliferation Kit Invitrogen C34554  
Treg Suppression Inspector Beads Miltenyi Biotec 130-092-909  
Penicillin-Streptomycin Gibco 15140  
40 μM Nylon Cell Strainer BD Falcon 352340  

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Ellis, G. I., Reneer, M. C., Vélez-Ortega, A. C., McCool, A., Martí, F. Generation of Induced Regulatory T Cells from Primary Human Naïve and Memory T Cells. J. Vis. Exp. (62), e3738, doi:10.3791/3738 (2012).

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