核蛋白标和基因组DNA的对分析通过单细胞西区块和单细胞PCR
bioRxiv : the preprint server for biology
|April 16, 2025
概括
我们开发了SplitBlot,这是一种用于同时进行单细胞基因组DNA和蛋白质分析的新型微流体检测. 这个工具将基于PCR的DNA放大与芯片上的西部涂抹结合起来,以获得基因型-表型相关性.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 单细胞多模式检测对于理解细胞异质性至关重要.
- 现有的方法难以分析基因组DNA和来自同一细胞的蛋白质.
- 需要综合方法来将基因型与蛋白质表达联系起来.
研究的目的:
- 开发一种微流体检测方法,SplitBlot,用于对单细胞基因组DNA和核细胞质蛋白的对分析.
- 从单个细胞中同时测量基因型和蛋白质表达.
- 提供一种用于将DNA信息与蛋白质配置文件相关联的工具.
主要方法:
- 开发了一种微流体装置 (SplitBlot),用于精确分离细胞组件.
- 采用了阿加罗斯微来进行基因组DNA封装和随后的PCR.
- 在芯片上采用单细胞西部涂抹与摄影捕获用于蛋白质分析 (海斯H3和β-actin).
主要成果:
- 在单个U251细胞中,SplitBlot成功地将基因组DNA分析 (TurboGFP放大) 与蛋白质检测 (海斯H3和β-actin) 结合起来.
- 实现了核 histone H3 和细胞质β-actin 的明显分离 (R s = 0.77).
- 从释放的糖封装DNA进行基因组DNA放大,成功率达86%.
结论:
- SplitBlot 允许精确分成,用于 in-tube PCR 和 on-chip western blotting 的分工工作流程.
- 这种测试提供了一个强大的工具,可以将单细胞基因型与核和细胞质蛋白表达联系起来.
- 提供了在单细胞水平上进行多原子分析的新功能.
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Southern Blot
Agarose gel electrophoresis is very useful in separating DNA fragments by size. Running a DNA ladder containing fragments of the known length alongside the sample helps determine the approximate length of the sample DNA fragments. However, additional steps are needed to verify the sequence identity of the sample DNA fragments.
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...
PCR - Polymerase Chain Reaction
Overview
