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Author:
Date:
2020-06-05
[Abstract] The study of human neutrophils in vitro is challenging due to their short half-life and propensity for activation. However, with careful handling and manipulation in the laboratory, they can be a powerful tool to investigate immune responses in health and disease. Here we describe a method for the isolation of human neutrophils from peripheral blood samples, followed by a high-throughput screen to assess the efficacy of a library of compounds in inducing neutrophil apoptosis, which may have therapeutic potential in neutrophil-driven diseases. This protocol is based on previously-published neutrophil isolation methods utilizing Dextran sedimentation of red blood cells followed by the separation of granulocytes with plasma/Percoll discontinuous gradient centrifugation. Yields of ~1 ...
[摘要] [摘要] 人类嗜中性粒细胞的研究 由于其半衰期短且易于活化，因此体外具有挑战性，然而，通过在实验室中的仔细处理和操纵，它们可以成为研究健康和疾病中免疫反应的有力工具。在此，我们介绍了一种分离方法外周血样本中的人类嗜中性粒细胞，然后进行高通量筛选，以评估化合物库诱导嗜中性粒细胞凋亡的功效，该化合物在嗜中性粒细胞驱动的疾病中可能具有治疗潜力。此规程基于先前发表的嗜中性粒细胞分离方法利用红细胞的葡聚糖沉降，接着用等离子体/粒细胞的分离的Percoll 〜1×10个的不连续梯度centrifugation.Yields 6 每嗜中性粒细胞毫升的血液，和>的纯度95个％嗜中性粒细胞是典型的。嗜中性粒细胞与经处理的激酶抑制剂文库，然后通过流式细胞仪评估中性粒细胞凋亡的速率。低通量用于高通量筛选人类原代免疫细胞，以鉴定具有修饰嗜中性粒细胞功能的化合物，并可根据需要进行修饰以评估其他表型。
[背景] 中性粒细胞是重要的先天免疫细胞与键的角色防御抵抗infection.They是短暂的细胞中，在感染和inflammat部位延长6-8小时循环典型的半衰期离子（萨默斯等人。 。，2010 ; Hidalgo。Et Al ...
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Author:
Kate Kosmac, Bailey D. Peck, R. Grace Walton, Jyothi Mula, Philip A. Kern, Marcas M. Bamman, Richard A. Dennis, Cale A. Jacobs, Christian Lattermann, Darren L. Johnson and Charlotte A. Peterson,
Date:
2018-06-20
[Abstract] Macrophages have well-characterized roles in skeletal muscle repair and regeneration. Relatively little is known regarding the role of resident macrophages in skeletal muscle homeostasis, extracellular matrix remodeling, growth, metabolism and adaptation to various stimuli including exercise and training. Despite speculation into macrophage contributions during these processes, studies characterizing macrophages in non-injured muscle are limited and methods used to identify macrophages vary. A standardized method for the identification of human resident skeletal muscle macrophages will aide in the characterization of these immune cells and allow for the comparison of results across studies. Here, we present an immunohistochemistry (IHC) protocol, validated by flow cytometry, to distinctly ...
[摘要] 巨噬细胞在骨骼肌修复和再生中具有很好的特征。关于驻留巨噬细胞在骨骼肌动态平衡，细胞外基质重塑，生长，代谢和适应各种刺激（包括运动和训练）中的作用知之甚少。尽管在这些过程中推测了巨噬细胞的贡献，但表征非受伤肌肉中的巨噬细胞的研究是有限的，用于鉴定巨噬细胞的方法各不相同。用于鉴定人类骨骼肌巨噬细胞的标准化方法将有助于鉴定这些免疫细胞，并可用于各研究结果的比较。在这里，我们提出免疫组织化学（IHC）协议，通过流式细胞术验证，以清楚地识别常驻人类骨骼肌巨噬细胞种群。我们显示CD11b和CD206双IHC有效识别人骨骼肌中的巨噬细胞。此外，非受伤人骨骼肌中的大多数巨噬细胞表现出“混合”M1 / M2表型，表达CD11b，CD14，CD68，CD86和CD206。在休息的骨骼肌中存在相对较少的CD11b + / CD206-巨噬细胞群。这种人口的相对丰度的变化可能反映了骨骼肌肉环境的重要变化。肌肉中的CD11b和CD206 IHC也显示出巨噬细胞的不同形态学特征，这些特征可能与这些细胞的功能状态有关。
【背景】巨噬细胞是能够适应局部微环境变化的多向性免疫细胞。在过去几年中，研究表明巨噬细胞表型是动态的，存在于连续统一体中（Mosser and Edwards，2008，Italiani and Boraschi，2014，Martinez and ...
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