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Biochemistry
用于细胞表面蛋白质组无标记定量的"细胞表面捕获"工作流程
用于细胞表面蛋白质组无标记定量的"细胞表面捕获"工作流程
JoVE Journal
Biochemistry
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JoVE Journal Biochemistry
“Cell Surface Capture” Workflow for Label-Free Quantification of the Cell Surface Proteome

用于细胞表面蛋白质组无标记定量的"细胞表面捕获"工作流程

Full Text
3,176 Views
06:31 min
March 24, 2023

DOI: 10.3791/64952-v

Akul Naik1, Sanjeeva Srivastava1,2, Arun P. Wiita1,3,4

1Department of Laboratory Medicine,University of California, San Francisco, 2Department of Biosciences and Bioengineering,Indian Institute of Technology Bombay, 3Deptartment of Bioengineering and Therapeutic Sciences,University of California, San Francisco, 4Chan Zuckerberg Biohub

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

在这里,我们描述了一种蛋白质组学工作流程,用于表征各种细胞类型的细胞表面蛋白质组。该工作流程包括细胞表面蛋白富集、后续样品制备、使用 LC-MS/MS 平台进行分析以及使用专用软件进行数据处理。

该协议使我们能够研究存在于各种细胞类型的细胞表面的抗原,以找到对该类型细胞或组织具有特异性的抗原。我们在这里介绍的技术允许从全细胞裂解物中富集细胞膜蛋白,最终通过基于质谱的蛋白质组学进行分析。因此,该方案的一个具体应用是将其应用于肿瘤细胞,以寻找存在于这些癌细胞表面的抗原,而不是可能作为癌症免疫疗法新靶标的正常细胞。

关于此方案需要注意的一点是,针对您感兴趣的实验优化样品输入可能很重要。因此,可能需要多次迭代或滴定才能找到最佳条件。因此,我们实验室的初级专家 Akul Naik 将演示该程序。

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细胞表面捕获 无标记定量 细胞表面蛋白质组 质谱分析 蛋白质组学 肿瘤细胞 癌症免疫疗法 生物素标记的细胞沉淀 裂解缓冲液 中性亲和素琼脂糖树脂 真空歧管 洗涤缓冲液 裂解物孵育 蛋白结合微量离心管

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