An analysis of critical factors for quantitative immunoblotting.

An analysis of critical factors for quantitative immunoblotting.
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DOI:
10.1126/scisignal.2005966
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发表时间:
2015-04-07
期刊:
影响因子:
7.3
通讯作者:
Janes KA
Janes KA
中科院分区:
生物学1区
文献类型:
--
作者:
Janes KA

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免疫印迹(也称为蛋白质印迹)结合数字图像分析可以是分析蛋白质丰度和蛋白质修饰的可靠方法,但并非每种免疫印迹分析组合都能产生准确的结果。在这里,我说明了如何样品制备,协议的实施,检测方案和规范化方法深刻影响免疫印迹的定量性能。本研究实施了诊断实验,评估免疫印迹分析工作流程的准确性和精密度。结果表明,忽略这种诊断可能会导致假定量免疫印迹数据,大大高估或低估蛋白质丰度的真实差异。
Immunoblotting (also known as Western blotting) combined with digital image analysis can be a reliable method for analyzing the abundance of proteins and protein modifications, but not every immunoblot-analysis combination produces an accurate result. Here, I illustrate how sample preparation, protocol implementation, detection scheme, and normalization approach profoundly affect the quantitative performance of immunoblotting. This study implemented diagnostic experiments that assess an immunoblot-analysis workflow for accuracy and precision. The results showed that ignoring such diagnostics can lead to pseudoquantitative immunoblot data that dramatically overestimate or underestimate true differences in protein abundance.
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