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相关概念视频

Overview Of Cell Separation And Isolation01:20

Overview Of Cell Separation And Isolation

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Cell separation was first achieved in 1964 by S. H. Seal, who separated large tumor cells from the smaller blood cells using filtration. Two years later, Pohl and Hawk performed experiments on how cells respond differently to a nonuniform electric field based on the cell type. Such observations were the inception of cell separation methods, which allow isolating a single cell type from a heterogeneous sample.
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DNA Isolation01:24

DNA Isolation

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DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...
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相关实验视频

Updated: May 28, 2025

Author Spotlight: Enhancing Drug Discovery - Development of Automated, Standardized Protocols for Nuclei Extraction from Frozen Tissues
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一种改进的细胞核隔离方法.

Pengfei Li1,2, Jingyao Zhang3, Xiaojuan Liu1,4

  • 1Regenerative Medicine Research Center, Sichuan University West China Hospital, Chengdu 610041, China.

Biology methods & protocols
|February 10, 2025
PubMed
概括

简化的核隔离方法为真核细胞提供了高纯度和高效率. 这种技术比传统的糖糖离心更快,为基因表达研究提供最佳的核样本.

关键词:
细胞核隔离细胞核隔离染色素免疫沉的免疫沉.共同免疫沉的发生.

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Author Spotlight: Nuclei Isolation from Mouse Cardiac Progenitor Cells for Epigenome and Gene Expression Profiling at Single-Cell Resolution
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科学领域:

  • 细胞生物学 细胞生物学
  • 分子生物学分子生物学

背景情况:

  • 准确的核隔离对于研究真核细胞中的基因表达和调节机制至关重要.
  • 评估和优化核隔离技术对于可靠的下游分子分析至关重要.

研究的目的:

  • 为了提高核隔离的效率和纯度.
  • 为了比较四种核隔离方法的产量,纯度和效率.
  • 确定下游分子应用的最佳方法.

主要方法:

  • 使用人类静脉内皮细胞评估了四种核隔离方法:糖糖离心,简化方法,均质化和NE-PER套件.
  • 方法涉及细胞溶解,均质化和洗步骤到颗粒核.
  • 分离的细胞核使用免疫阻塞,共免疫沉降 (Co-IP) 和染色体免疫沉降 (Ch-IP) 试验进行了评估.

主要成果:

  • 与同质化和NE-PER套件相比,简化的方法产生了与污染器官和细胞质成分较少的核.
  • 简化方法的有效性与糖糖离心相提并论,但加工时间显著缩短.
  • 同IP和Ch-IP测定验证了简化方法丰富标蛋白和DNA片段的能力.

结论:

  • 简化核隔离方法提供了高度纯净的核样本.
  • 这种优化的方法适用于各种下游应用,包括Co-IP和Ch-IP测定.
  • 简化方法在真核细胞研究中为核隔离提供了高效和有效的替代方案.