在小鼠肝核中分离的纯化染色质上进行体内染色质免疫沉的协议
Lei Li1, May G Akl1, Scott B Widenmaier1
1Department of Anatomy, Physiology, and Pharmacology, University of Saskatchewan, Saskatoon, SK, Canada.
STAR protocols
|February 1, 2025
概括
本研究介绍了小鼠肝脏中染色质免疫沉 (ChIP) 的详细方案. 改进的方法产生高质量的DNA-蛋白质复合体用于转录因子分析.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 生物化学 生物化学
背景情况:
- 染色体免疫沉 (ChIP) 是研究转录因子与基因组结合的重要技术.
- 现有的ChIP协议可能存在问题,导致获得可靠结果的挑战.
研究的目的:
- 提出一种强大且优化的协议,用于从小鼠肝脏中分离固定的DNA-蛋白质复合体.
- 改进样本的质量和产量,以便用于随后的ChIP分析.
主要方法:
- 该协议涉及肝脏分解和交叉链接,随后是DNA-蛋白质复合物的分离.
- 关键步骤包括染色体剪切,质量控制,DNA净化和ChIP分析.
- 该程序旨在与商业抗体一起使用.
主要成果:
- 描述的协议产生了适合ChIP分析的高质量样本.
- 这种方法促进了对全基因组转录因子结合的研究.
结论:
- 本方案提供了一种可靠的方法,用于小鼠肝脏中的染色质免疫沉.
- 这种方法提高了研究转录因子与DNA相互作用的能力.
相关概念视频
Chromatin Immunoprecipitation- ChIP
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Chromatin immunoprecipitation, or ChIP, is an antibody-based technique used to identify sites on DNA that bind to transcription factors of interest or histone proteins. It also helps determine the type of histone modifications such as acetylation, phosphorylation, or methylation.
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ChIP can be divided into two types - X-ChIP and N-ChIP. X-ChIP involves in vivo cross-linking of histones and regulatory proteins to DNA, fragmenting the DNA by sonication, and isolating the protein-DNA...
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Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
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