| High Dimensional Functionomic Analysis of Human Hematopoietic Stem and Progenitor Cells at a Single Cell Level
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Author:
Date:
2018-05-20
[Abstract] The ability to conduct investigation of cellular transcription, signaling, and function at the single-cell level has opened opportunities to examine heterogeneous populations at unprecedented resolutions. Although methods have been developed to evaluate high-dimensional transcriptomic and proteomic data (relating to cellular mRNA and protein), there has not been a method to evaluate corresponding high-dimensional functionomic data (relating to cellular functions) from single cells. Here, we present a protocol to quantitatively measure the differentiation potentials of single human hematopoietic stem and progenitor cells, and then cluster the cells according to these measurements. High dimensional functionomic analysis of cell potential allows cell function to be linked to molecular ...
[摘要] 在单细胞水平进行细胞转录，信号传导和功能调查的能力为以前所未有的决议研究异质人群开启了机会。 尽管已经开发了评估高维转录组学和蛋白质组学数据（与细胞mRNA和蛋白质有关）的方法，但尚未有方法从单个细胞评估相应的高维功能组学数据（与细胞功能有关）。 在这里，我们提出了一种方案来定量测量单个人造血干细胞和祖细胞的分化潜能，然后根据这些测量结果聚集细胞。 细胞电位的高维功能组分析允许细胞功能与相同祖细胞群体内的分子机制相关联。
【背景】单细胞水平的细胞转录，信号传导和功能单细胞测量技术的发展，以及流式细胞仪等先前存在的技术的发展，使得新镜头能够检测复杂的异质群体。这些方法产生大量数据，这可以借助于降维算法来解释，如使用Mpath，Monocole，PCA，Wishbone或扩散图算法在单细胞RNA-Seq上所示的（Paul等， 2016年;参见 et al。，2017），以及使用tSNE或PhenoGraph的CyTOF（Amir et al。，2013; Levine et al 。，2015）。
我们开发了这个协议，以允许在单细胞环境中对造血祖细胞的大规模培养物进行功能分析和随后的降维。在这个协议中，我们描述了在细胞因子的基质细胞培养物中培养人CD34 ...
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| Efficient Production of Functional Human NKT Cells from Induced Pluripotent Stem Cells − Reprogramming of Human Vα24+iNKT Cells
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Author:
Date:
2017-05-20
[Abstract] Antigen-specific T cell-derived induced pluripotent stem cells (iPSCs) have been shown to re-differentiate into functional T cells and thus provide a potential source of T cells that could be useful for cancer immunotherapy. Human Vα24+ invariant natural killer T (Vα24+iNKT) cells are subset of T cells that are characterized by the expression of an invariant Vα24-Jα18 paired with Vβ11, that recognize glycolipids, such as α-galactosylceramide (α-GalCer), presented by the MHC class I-like molecule CD1d. Vα24+iNKT cells capable of producing IFN-γ are reported to augment anti-tumor responses, which affects both NK cells and CD8+ cytotoxic T lymphocytes to eliminate MHC- and MHC+ tumor cells, respectively. Here we describe a ...
[摘要] 抗原特异性T细胞来源的诱导多能干细胞（iPSCs）已显示重新分化为功能性T细胞，从而提供可用于癌症免疫治疗的T细胞的潜在来源。不变性自然杀伤T（Vα24 + iNKT）细胞的人Vα24 + 细胞是T细胞的子集，其特征在于与Vβ11配对的不变Vα24-Jα18的表达，其识别糖脂，如α-半乳糖神经酰胺（α-GalCer），由MHC I类分子CD1d呈递。据报道能够产生IFN-γ的Vα24 + i / KT细胞增加抗肿瘤反应，其影响NK细胞和CD8 +细胞毒性T淋巴细胞以消除MHC - 和MHC + 肿瘤细胞。在这里，我们描述了将人Vα24 + iNKT细胞重编程到iPSC中的鲁棒方案，然后将其重新分化为Vα24 + iNKT细胞（iPS-Vα24功能的iNKT）。我们进一步提供了测定iPS-Vα24 + iNKT细胞活性的方案。背景 以前有报道说，针对晚期非小细胞肺癌（NSCLC）和头颈部癌症的Vα24 + iNKT细胞癌免疫治疗的临床试验显示疗效，耐受性良好（Motohashi et al。等人，2009; Yamasaki等人，2011）。然而，已知来自外周血单核细胞（PBMC）的Vα24 ...
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| Mouse BMDC-dependent T Cell Polarization Assays
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Author:
Date:
2016-02-05
[Abstract] In response to exposure to antigen, T cells whose T cell receptor (TCR) are capable of recognizing the self MHC-antigen derived peptide complex, respond to the antigen and differentiate into one of several subsets, namely TH1, TH2, TH17, Treg, etc. characterized by the signature cytokine they secrete, namely IFN-γ, IL-4, IL-17 or IL-10, respectively, referred to as syngeneic polarization as the MHC presenting the foreign antigen/epitope is self-derived.
T cell responses following incubation for defined periods, usually 3 days for mouse splenocytes, are routinely measured by assessing the antigen-stimulated proliferation of T cells by measuring the radiolabeled precursor thymidine incorporated into the genomic DNA of the dividing T cell; the direction of polarization ...
[摘要] 响应于暴露于抗原，其T细胞受体（TCR）能够识别自身MHC抗原衍生的肽复合物的T细胞应答抗原，并分化为几个亚类之一，即TH1，TH2，TH17，Treg， 等。其特征在于它们分泌的特征性细胞因子，即IFN-γ，IL-4，IL-17或IL-10，分别称为同基因极化，因为呈递外源抗原/表位的MHC是自身衍生的。通常通过测量掺入分裂T细胞的基因组DNA中的放射性标记的前体胸腺嘧啶，通过评估抗原刺激的T细胞增殖来常规测量对于确定的时间段（通常为小鼠脾细胞3天）孵育后的T细胞应答;通过使用培养上清液的ELISA或通过细胞内细胞因子染色随后通过流式细胞术测量由增殖或非增殖应答性T细胞产生的细胞因子来评估极化方向。在下面详述的方案中，我们描述使用的同源小鼠骨髓源性树突状细胞（BMDC）作为APC刺激脾源性T细胞。通过将放射性标记的前体胸苷掺入基因组DNA中来测量T细胞的增殖反应，并通过在72小时期间测量它们分泌的细胞因子即IFN-γ，IL-4和IL-17来评估其极化方向使用ELISA。此外，我们在细胞内细胞因子染色后使用流式细胞术检测CD3 + /CD4 + /CD25低人群中的IL-17阳性T细胞。使用牛分枝杆菌（Mycobacterium bovis） - Bacille Calmette ...
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