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Biology
球状外生长作为前维沃分析分析涉及的路径的表皮上皮细胞激活
球状外生长作为前维沃分析分析涉及的路径的表皮上皮细胞激活
JoVE Journal
Biology
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JoVE Journal Biology
Glomerular Outgrowth as an Ex Vivo Assay to Analyze Pathways Involved in Parietal Epithelial Cell Activation

球状外生长作为前维沃分析分析涉及的路径的表皮上皮细胞激活

Full Text
5,946 Views
06:39 min
August 19, 2020

DOI: 10.3791/60324-v

Jennifer Eymael1, Laura Miesen1, Fieke Mooren1, Jitske Jansen1,2, Jack Wetzels3, Johan van der Vlag4, Bart Smeets1

1Radboud Institute for Molecular Life Sciences, Department of Pathology,Radboud University Medical Center, 2Radboud Institute for Molecular Life Sciences, Amalia Children's Hospital, Department of Paediatric Nephrology,Radboud University Medical Center, 3Radboud Institute for Health Sciences, Department of Nephrology,Radboud University Medical Center, 4Radboud Institute for Molecular Life Sciences, Department of Nephrology,Radboud University Medical Center

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Please note that some of the translations on this page are AI generated. Click here for the English version.

本文介绍了一种培养和分析从小鼠肾脏分离出的封装球状上皮细胞生长的方法。此方法可用于研究涉及单骨上皮细胞增殖和迁移的途径。

表皮上皮细胞的激活是肾脏球状疤痕组织发育的关键因素。使用这种方法,我们可以研究这种激活所涉及的细胞过程,并希望找到治疗方案来减缓甚至阻止疾病进展。我们技术的主要优点是,我们使用直接从孤立的球状细胞生长的原细胞。

释放肾脏后,如文本手稿中概述的,用手术钳握住肾脏,并使用另一对钳子拉出肾胶囊。在此之后,将肾脏放入六孔培养板的井中,每个孔包含两毫升的 HBSS,并放在冰上培养板上。首先,将肾脏转移到100毫米的培养皿中,用两个手术刀把它们切成大约一到两毫米的小碎片。

用HSS保持碎肾片湿润。接下来,将肾片放在 300 微米金属筛的顶部,并使用 20 毫升注射器的柱塞压压肾脏。在两者之间用HSS反复冲洗筛子,并使用血清移液器收集流经并转移到干净的培养皿中。

使用手术刀刮掉筛子底部的一切,并转移到收集的肾脏同质性。用 HBSS 通过 75 和 53 微米筛冲洗肾脏均质。然后,用HSSS洗洗两个筛子,以去除所有较小的结构。

通过用DMEM补充20%胎儿小腿血清清洗每个筛子的上表面,收集留在筛子中的肾脏结构和材料,将材料转移到六孔超低附着微孔板的孔中。将超低附件微孔板带到倒置的光学显微镜上,并使用 20 微升移液器采集单封装或斩首的 glomeruli。在移液器尖端中捕获单个球状物后,将新的 DMEM 介质添加到同一移液器尖端中,以达到 20 微升。

将用DMEM介质的单球体转移到24井细胞培养板的中心,在37摄氏度下用5%的二氧化碳孵育3小时,使球状体附着在井的中心。孵育后,球状体将附着在井的中心。仔细添加500微升内皮基底介质,辅以生长因子套件和额外的5%FBS和1%青霉素和链霉素到每个井。

培养在37摄氏度的单球与5%的二氧化碳6天。经过六天的孵化,使用数字倒置光显微镜拍摄图像并分析球状生长。使用图像分析软件,通过打开一个带比例线的图像文件来确定光洁的表面积。

在比例栏上绘制一条直线,然后单击"分析",然后测量以确定以像素为单位的距离。要确定比例,请单击"分析并设置比例",然后输入已知距离(以像素为单位)、已知距离和长度单位。完成后单击"确定"。

单击"分析和设置测量"。然后,检查"区域"和"显示标签"选项。完成后单击"确定"。

接下来,在球状生长周围绘制一个徒手选择。单击"分析"和"度量"以显示结果表,该表包含先前确定比例中增长的表面积。在这项研究中,从小鼠肾脏分离、培养和分析包状球状上皮细胞的遗传性上皮细胞生长。

代表性光显微镜图像显示,球状与小鼠肾脏分离后,在培养过程中不同时间点的球状生长。为了验证外生长细胞是表皮上皮细胞,被斩首的球状糖也被分离并培养六天。在这个潜伏期,被斩首的球蛋白没有细胞生长。

然后,针对不同的表皮上皮细胞标记、照片位点特定标记以及内皮细胞标记进行免疫荧光染色。结果证实,外生长的细胞,事实上,是表皮上皮细胞。与从野生型小鼠分离出的球状小鼠相比,CD44敲除小鼠的球状小鼠显示,生长的细胞数量减少,球状生长表面积也减少。

这表明CD44在表皮上皮细胞活化中具有重要作用。使用这种技术,它也可以研究对药物对单皮上皮细胞活化的影响。这可以通过用您选择的药物治疗孤立的球菌,并分析细胞生长和细胞迁移的差异。

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