Automated microfluidic chromatin immunoprecipitation from 2,000 cells.

Automated microfluidic chromatin immunoprecipitation from 2,000 cells.
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DOI:
10.1039/b819648f
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发表时间:
2009-05-21
期刊:
影响因子:
6.1
通讯作者:
Quake SR
Quake SR
中科院分区:
工程技术1区
文献类型:
--
作者:
Wu AR;Hiatt JB;Lu R;Attema JL;Lobo NA;Weissman IL;Clarke MF;Quake SR

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染色质免疫沉淀(ChIP)是一种用于探测DNA-蛋白质相互作用的强大检测方法。实施这种检测的传统方法是冗长、繁琐的,并且需要大量的细胞,使得难以研究罕见的细胞类型,如某些癌症和干细胞。我们设计了一种微流控装置,以快速,自动化的方式对低细胞数进行敏感的ChIP分析,同时保留测定的特异性。比较两种修饰的组蛋白靶点的ChIP结果,我们发现我们的2,000个细胞的自动微流控ChIP(AutoChIP)与使用50,000 - 500,000个细胞的传统ChIP方法相当。该技术可以提供对高灵敏度、快速和自动化ChIP测定的需求的解决方案,并且在这样做的过程中促进ChIP用于许多有趣和有价值的应用。
Chromatin immunoprecipitation (ChIP) is a powerful assay used to probe DNA–protein interactions. Traditional methods of implementing this assay are lengthy, cumbersome and require a large number of cells, making it difficult to study rare cell types such as certain cancer and stem cells. We have designed a microfluidic device to perform sensitive ChIP analysis on low cell numbers in a rapid, automated fashion while preserving the specificity of the assay. Comparing ChIP results for two modified histone protein targets, we showed our automated microfluidic ChIP (AutoChIP) from 2,000 cells to be comparable to that of conventional ChIP methods using 50,000–500,000 cells. This technology may provide a solution to the need for a high sensitivity, rapid, and automated ChIP assay, and in doing so facilitate the use of ChIP for many interesting and valuable applications.
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