| Analysis of Mitochondrial Transfer in Direct Co-cultures of Human Monocyte-derived Macrophages (MDM) and Mesenchymal Stem Cells (MSC)
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Author:
Date:
2017-05-05
[Abstract] Mesenchymal stem/stromal cells (MSC) are adult stem cells which have been shown to improve survival, enhance bacterial clearance and alleviate inflammation in pre-clinical models of acute respiratory distress syndrome (ARDS) and sepsis. These diseases are characterised by uncontrolled inflammation often underpinned by bacterial infection. The mechanisms of MSC immunomodulatory effects are not fully understood yet. We sought to investigate MSC cell contact-dependent communication with alveolar macrophages (AM), professional phagocytes which play an important role in the lung inflammatory ...
[摘要] 间充质干/基质细胞（MSC）是成年干细胞，已被证明可以改善急性呼吸窘迫综合征（ARDS）和败血症临床前模型中的存活，增强细菌清除和减轻炎症。这些疾病的特征在于通常受细菌感染支持的不受控制的炎症。 MSC免疫调节作用的机制尚未完全了解。我们试图研究与肺泡巨噬细胞（AM），在肺炎症反应和抗菌防御中起重要作用的专业吞噬细胞的MSC细胞接触依赖性通信。通过使用基本的直接共培养系统，共聚焦显微镜和流式细胞术，我们通过隧道纳米管（TNT）显现并有效量化了MSC线粒体转移到AM。为了模拟人类AM，在粒细胞巨噬细胞集落刺激因子（GM-CSF）存在下，从人供体血液中分离原代单核细胞并分化成巨噬细胞（单核细胞衍生的巨噬细胞，MDM），从而允许适应AM样表型（de Almeida等人，2000; Guilliams等人，2013）。人骨髓衍生的MSC用线粒体特异性荧光染色标记，广泛洗涤，以1:20（MSC / ...
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| Ex vivo Human Natural Killer (NK) Cell Stimulation and Intracellular IFNγ and CD107a Cytokine Staining
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Author:
Date:
2015-06-20
[Abstract] Natural killer (NK) cells comprise 5–20% of peripheral blood mononuclear cells (PBMC) in humans. In addition to their fundamental roles in the defense against viral infections and tumor surveillance, NK cells help shape adaptive immune responses through their production of cytokines. NK cells are traditionally identified as CD3neg, CD14neg, CD19neg lymphocytes expressing CD56. Using a combination of markers that includes CD56 and CD7 greatly increases the ability to define the phenotype and function of NK cell subsets. Two key markers of NK cell function are ...
[摘要] 自然杀伤（NK）细胞在人中包含5-20％的外周血单核细胞（PBMC）。 除了它们在防御病毒感染和肿瘤监测中的基本作用，NK细胞通过其细胞因子的产生帮助形成适应性免疫应答。 NK细胞传统上被鉴定为表达CD56的CD3阴性，CD14阳性，CD19阴性淋巴细胞。 使用包括CD56和CD7的标记物的组合极大地增加了定义NK细胞亚群的表型和功能的能力。 NK细胞功能的两个关键标记是IFNγ的产生和通过CD107a的表达测量的细胞毒性颗粒的释放。 在这里我们描述了一种方法来评估在靶细胞或细胞因子刺激后NK细胞中的IFNγ和CD107a表达。 该方法可用于评估来自广泛的研究参与者的外周血单核细胞中NK细胞的一般功能能力。
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