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Chromatin Immunoprecipitation- ChIP

Chromatin Immunoprecipitation- ChIP

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.
Types of ChIP
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...

Spreading of Chromatin Modifications

Spreading of Chromatin Modifications

The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer...

Chromatin Modification in iPS Cells

Chromatin Modification in iPS Cells

Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...

Chromatin Position Affects Gene Expression

Chromatin Position Affects Gene Expression

Chromatin is the massive complex of DNA and proteins packaged inside the nucleus. The complexity of chromatin folding and how it is packaged inside the nucleus greatly influences access to genetic information. Generally, the nucleus' periphery is considered transcriptionally repressive, while the cell's interior is considered a transcriptionally active area.
Topologically Associated Domains (TADs)
The 3-dimensional positioning of chromatin in the nucleus influences the...

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Updated: Oct 4, 2025

The ChroP Approach Combines ChIP and Mass Spectrometry to Dissect Locus-specific Proteomic Landscapes of Chromatin

The ChroP Approach Combines ChIP and Mass Spectrometry to Dissect Locus-specific Proteomic Landscapes of Chromatin

Published on: April 11, 2014

空間CUT&Tag:細胞レベルで空間的に解明されたクロマチンの改変プロフィール

Yanxiang Deng^1,2, Marek Bartosovic³, Petra Kukanja³

¹Department of Biomedical Engineering, Yale University, New Haven, CT 06520, USA.

Science (New York, N.Y.)

|February 10, 2022

まとめ

空間的オミクスは空間的CUT&Tagで進歩し,組織における全ゲノムヒストン改変マッピングを可能にします. この技術はマウスの胚と脳における表遺伝的調節を明らかにし細胞の発達と運命を洞察します

さらに関連する動画

Single-Cell Factor Localization on Chromatin using Ultra-Low Input Cleavage Under Targets and Release using Nuclease

Single-Cell Factor Localization on Chromatin using Ultra-Low Input Cleavage Under Targets and Release using Nuclease

Published on: February 1, 2022

Chromatin Immunoprecipitation ChIP of Histone Modifications from Saccharomyces cerevisiae

Chromatin Immunoprecipitation ChIP of Histone Modifications from Saccharomyces cerevisiae

Published on: December 29, 2017

関連する実験動画

Last Updated: Oct 4, 2025

The ChroP Approach Combines ChIP and Mass Spectrometry to Dissect Locus-specific Proteomic Landscapes of Chromatin

The ChroP Approach Combines ChIP and Mass Spectrometry to Dissect Locus-specific Proteomic Landscapes of Chromatin

Published on: April 11, 2014

Single-Cell Factor Localization on Chromatin using Ultra-Low Input Cleavage Under Targets and Release using Nuclease

Single-Cell Factor Localization on Chromatin using Ultra-Low Input Cleavage Under Targets and Release using Nuclease

Published on: February 1, 2022

Chromatin Immunoprecipitation ChIP of Histone Modifications from Saccharomyces cerevisiae

Chromatin Immunoprecipitation ChIP of Histone Modifications from Saccharomyces cerevisiae

Published on: December 29, 2017

科学分野:

ゲノミクス
エピジェネティクス
空間生物学

背景:

空間オミクスは,生物学的および生物医学的な研究において急速に進歩している分野です.
細胞の機能と発達を解読する上でエピジェネティック・モディフィケーションの空間的組織を理解することは極めて重要です

研究の目的:

空間的CUT&Tagを導入し,ヒストンの改変の空間的に解明された全ゲノムプロファイリングのための新しい方法.
ネズミの胚と脳に空間CUT&Tagを適用し,表遺伝的調節と細胞パターンを調査する.

主な方法:

局所CUT&Tag化学とマイクロ流体決定的バーコードと次世代シーケンシングの統合
組織サンプルにおける全ゲノムヒストン改変プロファイルの空間CUT&Tagの適用
免疫光成像を用いて,単細胞の表遺伝子を20ミクロメートルのピクセルで特定する.

主要な成果:

空間的に解明されたクロマチンの状態はマウスの胚でマッピングされ,組織特有の表遺伝規律を明らかにした.
ENCODE参照と相関する組織スケールの空間情報が得られた.
皮質層の発達とマウスの脳の空間的な細胞型パターンの表遺伝的制御が解明された.
単細胞のエピジェノームは,空間プロファイリングデータからインサイトで得られた.

結論:

Spatial-CUT&Tagは,組織における高解像度の空間的表遺伝子プロファイリングのための強力なツールを提供します.
この方法は,正常な生理学と病気の両方で表遺伝的調節,細胞機能,そして運命の決定を研究するための新しい機会を提供します.
この技術は,原生組織文脈内のクロマチンの状態の詳細な分析を可能にすることで,空間オミクス分野を前進させる.