从老鼠肠道树突状细胞和巨噬细胞的分离和表征
Summary
在这里，我们详细介绍了小鼠肠道树突状细胞（DCs）和巨噬细胞的快速分离方法。使用多色流式细胞仪分析细胞分选磁珠富集而被用来产生高纯度的功能研究人口肠道DC和巨噬细胞的表型特征。
Abstract
肠道内居住的是参与对共生的植物和食物抗原在促进容忍，而随之而来的剩余准备安装的炎症反应，病原体侵入朝1,2先天免疫和适应性免疫细胞的独特群体。抗原提呈细胞，特别是区议会和巨噬细胞，发挥关键作用，在肠道免疫稳态维持通过自己的能力感和妥善应对微生物3-14。肠道DC和巨噬细胞的高效分离是在描述这些细胞的表型和功能的关键一步。虽然隔离肠道免疫细胞，包括区议会和巨噬细胞，许多有效的方法已6,10,15-24，许多依靠长期的消化时间，可能会产生负面影响细胞表面抗原的表达，细胞活力，和/或细胞产量。在这里，我们详细介绍快速分离的大量viabl的一种方法E，肠区议会和巨噬细胞。肠道DC和巨噬细胞的表型特征进行了直接染色孤立的肠细胞与特定的荧光标记单克隆抗体多色流式细胞仪分析。此外，高纯度的DC和巨噬细胞群体隔离功能的研究，利用CD11c和CD11b的磁激活细胞分选，细胞分选微珠。
Protocol
1。肠上皮细胞的解剖和离解制备的试剂和设备： 温暖的Ca 2 + /镁2 +无PBS（CMF的PBS）的室温。 温暖的Ca 2 + / Mg 2 +的免费的HBSS 5％胎牛血清（CMF方案的HBSS / FBS），和2mM EDTA室温。 温暖的轨道摇床至37°C。 注：步骤1.1至1.7，必须尽快进行，以尽量减少细胞死亡的程度，并实现最大的细胞?…
Discussion
图3。直接组织消化时间的影响因素，重要的细胞产量和表面抗原表达的优化。细胞产量和表面抗原表达，胶原酶的具体特点，组织切碎程度，以及存在或炎症的情况下，这可能会影响组织的完整性和细胞结构。长期组织消化，可能会导致细胞活力下降和表面抗原的表达，同时组织消化不足可能会导致在分析细胞缺乏。
Declarações
The authors have nothing to disclose.
Acknowledgements
我们感谢亚伦RAE（埃默里大学儿科和儿童医疗亚特兰大流核心），细胞分选。这项工作是由NIH资助AA01787001，从克隆氏病及溃疡性结肠炎美国基金会事业发展奖，和埃默里Egleston儿童研究中心种子批支持到顶级域名（TLD）
Materials
| Name of the Reagent | Company | Catalogue number | Comments |
| 1X PBS, Ca2+– and Mg2+-free | |||
| Hank’s balanced salt solution (HBSS) with phenol red | Fisher Scientific | SH3001603 | |
| Sodium bicarbonate | Sigma | S6014 | |
| 1M HEPES in 0.85% NaCl | Lonza | 17-737E | |
| Fetal bovine serum (FBS) | Atlanta biologicals | S11150H | Heat-inactivated |
| 0.5M EDTA (pH 8.0) | Cellgro | 46-034-CI | |
| Collagenase type VIII | Sigma | C2139 | |
| DNase I | Roche | 14785000 | Stock solution: 100mg/ml |
| LIVE/DEAD Fixable Aqua Dead Cell Stain Kit for 405 nm excitation | Invitrogen | L34957 | Use at 1:1000 |
| CD45-PerCP mAb (30F11) | BD | 557235 | Use at 1:100 |
| CD103-PE mAb (M290) | BD | 557495 | Use at 1:100 |
| FcγRIII/II mAb (2.4G2) | BD | 553141 | Use at 1:200 |
| CD11c-APC mAb (N418) | eBioscience | 17-0114-82 | Use at 1:100 |
| MHC-II (I-Ab)-Alexa Fluor 700 mAb | eBioscience | 56-5321-82 | Use at 1:100 |
| CD11b-eFluor 450 mAb (M1/70) | eBioscience | 48-0112-82 | Use at 1:200 |
| F4/80-PE-Cy7 mAb (BM8) | eBioscience | 25-4801-82 | |
| CD11b microbeads | Miltenyi Biotec | 130-049-601 | |
| CD11c microbeads | Miltenyi Biotec | 130-052-001 | |
| 50 mL conical tubes | BD Falcon | 352098 | |
| Single mesh wire strainer | Chefmate | ||
| Small weigh boat | Fisher Scientific | 08-732-116 | |
| 100 μm cell strainer | BD Falcon | 352360 | |
| 40 μm cell strainer | BD Falcon | 352340 | |
| 5 mL polystyrene round-bottom tubes | BD Falcon | 352235 | Use at 1:100 |
| MaxQ 4450 benchtop orbital shaker | Thermo Scientific | ||
| LS MACS column | Miltenyi Biotec | 130-042-401 | |
| LSR II | BD | ||
| FACSAria II | BD |
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Tags
IsolationCharacterizationDendritic CellsMacrophagesMouse IntestineInnate Immune CellsAdaptive Immune CellsToleranceCommensal FloraFood AntigensInflammatory ResponsesAntigen Presenting CellsDCsMacrophagesIntestinal Immune HomeostasisMicrobiotaIsolation MethodsDigestion TimesCell Surface Antigen ExpressionCell ViabilityCell YieldPhenotypic CharacterizationFluorescence-labeled Monoclonal AntibodiesFlow Cytometric AnalysisFunctional StudiesCD11cCD11b Magnetic-activated Cell Sorting Beads
Citar este artigo
Geem, D., Medina-Contreras, O., Kim, W., Huang, C. S., Denning, T. L. Isolation and Characterization of Dendritic Cells and Macrophages from the Mouse Intestine. J. Vis. Exp. (63), e4040, doi:10.3791/4040 (2012).