TChIP-Seq: Cell-Type-Specific Epigenome Profiling

Mari Mito; Mitsutaka Kadota; Shinichi Nakagawa; Shintaro Iwasaki

doi:10.3791/58298

JoVE Journal
Biology

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JoVE Journal Biology

TChIP-Seq: Cell-Type-Specific Epigenome Profiling

TChIP-Seq: 셀 형식 관련 Epigenome 프로 파일링

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07:28 min

January 23, 2019

DOI: 10.3791/58298-v

Mari Mito^1,2, Mitsutaka Kadota³, Shinichi Nakagawa^1,4, Shintaro Iwasaki^2,5

¹RNA Biology Laboratory,RIKEN, ²RNA Systems Biochemistry Laboratory,RIKEN Cluster for Pioneering Research, ³Laboratory for Phyloinformatics,RIKEN Center for Biosystems Dynamics Research, ⁴RNA Biology Laboratory, Faculty of Pharmaceutical Sciences,Hokkaido University, ⁵Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences,University of Tokyo

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Overview

This article presents a detailed protocol for tandem chromatin immunoprecipitation sequencing (tChIP-Seq), highlighting its applicability in analyzing cell-type-specific histone modifications in the genome. By isolating chromatin from targeted cells, this method allows researchers to explore epigenetic regulation and enrich insights into neuron-specific histone modifications.

Key Study Components

Research Area

Epigenetics
Histone modification analysis
Cell-type specificity

Background

Importance of chromatin modifications in cellular function
Potential for understanding neuron development and function
Need for precise methods to study histone modifications

Methods Used

Tandem chromatin immunoprecipitation sequencing (tChIP-Seq)
Mouse neuron cells as the biological model
Affinity purification and electrophoresis for DNA quality verification

Main Results

Confirmed enrichment of histone modifications specific to neuron cells
Proven specificity of the immune purification with negative controls
Detailed observations of histone modifications along neuron genes

Conclusions

This study provides a valuable protocol for exploring histone modifications in a cell-type-specific manner.
It highlights the importance of tChIP-Seq in advancing research in epigenetics, particularly in understanding neuron biology.

Frequently Asked Questions

What is tChIP-Seq?

tChIP-Seq is a method used to analyze the genome-wide distribution of histone modifications specific to particular cell types.

Why is cell-type specificity important in epigenetics?

Cell-type specificity reveals how different cells regulate gene expression and functions based on their unique histone modification patterns.

What is the significance of histone modifications?

Histone modifications play a critical role in regulating gene expression, impacting cellular functions and development.

What are some safety precautions for using formaldehyde?

Precautions include wearing rubber gloves and protective eyewear, and ensuring proper ventilation in the workspace.

Can this method be applied to other cell types?

Yes, the tChIP-Seq technique can be adapted for other histone modifications and various cell types.

What is the role of glycine in the protocol?

Glycine is used to stop the fixation reaction during the sample preparation process.

How is DNA quality verified in the protocol?

DNA quality is checked at multiple stages using microfluidic electrophoresis after key steps like sonication and affinity purification.

탠덤 chromatin 위한 단계별 프로토콜 설명 immunoprecipitation 시퀀싱 (tChIP-Seq) 셀 형식 관련 게놈 넓은 히스톤 수정의 분석을 가능 하 게.

이 방법은 게놈과 더불어 세포 모형 특정 방식으로 얼마나 많은 색채 수정이 통제되는지와 같은 후성 유전학 필드에 있는 중요한 질문에 대답하는 것을 도울 수 있습니다. 이 기술의 주요 장점은 우리가 표적 세포에서 크롬토닌을 분리한 다음 전형적인 집시 다운스트림을 따를 수 있다는 것입니다. 그래서이 방법은 뉴런 특정 트리밍실에 대한 통찰력을 제공 할 수 있습니다, lysinc 4, opisoncilly.

그것은 또한 다른 히스톤 수정, 다른 세포 유형 및 기타 모델 유기체에 적용 될 수있다. 절차를 시연하는 것은 내 실험실에서 기술자 인 마리 미토 (Mari Mito)가 될 것입니다. 시작하려면, 작은 조각으로 관심의 조직을 해부 미세 스프링 가위를 사용합니다.

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