摘要:树突状细胞是一群功能强大的抗原提呈细胞,是联系固有免疫和特异性免疫的中坚力量。cDC表达CD11c和MHCII,可分为cDC1和cDC2两个不同的亚群 (Guilliams等,2014)。cDC1s分化依赖于转录因子BATF3,IRF8和ID2,表达趋化因子受体XCR1;在小鼠肿瘤模型中,一般加用整合素αE分子 (CD103) 来标记 (Salmon等,2016)。而cDC2s的分化依赖于转录因子RELB,IRF4和ZEB2,表面表达CD11b和CD172a分子可使其与cDC1s亚群区分开。cDC1s主要执行交叉提呈肿瘤抗原,激发CD8
+T细胞杀伤效应,已被广泛研究证实是肿瘤排异反应及肿瘤免疫治疗的关键亚群 (Bottcher等,2018)。本文阐述如何运用流式技术检测肿瘤微环境内DC亚群及其成熟标志,为相关研究作铺垫。
材料与试剂
材料:
- 眼科剪及眼科镊
- 1 ml移液枪及枪头
- 6孔细胞培养平底板 (NEST®, catalog number: 032819AA01)
- 96孔细胞培养U底板 (NEST®, catalog number: 112518AA03)
- 15 ml离心管 (Thermo Fisher Scientific, NuncTM, catalog number: 339650)
- 50 ml离心管 (Thermo Fisher Scientific, NuncTM, catalog number: 339652)
- 无菌注射器 (上海康德莱企业发展有限公司,KDL®)
- 70 μm孔径滤网 (Corning, Falcon®, catalog number: 352350)
- 5 ml无菌圆底管 (带滤网) (Corning, Falcon®, catalog number: 352235)
试剂:
- 胎牛血清 (Gemini, FoundationTM, catalog number: 900-108)
- Anti-FcR (CD16/CD32) 抗体 (BioXCel, catalog number: BE0307)
- 胶原蛋白酶I (Worthington Biochemical®, catalog number: LS004186,-20°C储存)
- 脱氧核糖核酸酶I,来源于牛胰腺 (Sigma-Aldrich®, catalog number: DN25,-20°C储存)
- DMEM基础高糖培养液 (HycloneTM, catalog number: SH30243.01)
- PBS (HycloneTM, catalog number: SH302560.31)
- 乙醇
- 5% DMEM培养液 (见溶液配方)
- FACS buffer (见溶液配方)
- 肿瘤组织消化液 (见溶液配方)
抗体:
- Anti-FcR (CD16/CD32) (BioXCell, BioXCell, catalog number: BE0307)
- Fixable Viability Stain 780 (BD Bioscience, BD, catalog number: 565388)
- Anti-mouse-CD45.2-BV785 (Biolegend, catalog number: 109839)
- Anti-mouse-Ly6C-BV605 (Biolegend, catalog number: 128035)
- Anti-mouse-Ly6G-BV711 (Biolegend, catalog number: 127643)
- Anti-mouse-CD11b-PE/Cy7 (Biolegend, catalog number: 101216)
- Anti-mouse-CD11c-APC (Biolegend, catalog number: 117310)
- Anti-mouse-CD103-APC/Cy7 (Biolegend, catalog number: 121432)
- Anti-mouse-F4/80-BV421 (Biolegend, catalog number: 123137)
- Anti-mouse-CD86-FITC (Biolegend, catalog number: 105005)
- Anti-mouse-MHC class II (I-A/I/E)-PerCP/Cy5.5 (Biolegend, catalog number: 107625)
仪器设备
- 37 °C二氧化碳培养箱 (Thermo Fisher Scientific)
- 电热恒温水槽 (上海一恒科学仪器有限公司,model:DK-8AXX)
- 低温离心机 (Eppendorf®, model: 5810R)
- 微型台式真空泵GL-802B型 (Kylin-bell®, model: GL-802B型)
- Flow Cytometer (BD, model: LSRfortessa, or equivalent)
- 恒温细胞培养箱
- 超净工作台
实验步骤
Copyright: © 2019 The Authors; exclusive licensee Bio-protocol LLC.
分类
细胞生物学 > 单细胞分析 > 流式细胞术
癌症生物学 > 肿瘤免疫学 > 细胞生物学试验
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