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研究分野生物学的科学遺伝学エピジェネティクス (ゲノムメチレーションとエピジェノミクスを含む)
HP1は,初期のドロソフィラ胚の3Dゲノム再編成を駆動する.

HP1は,初期のドロソフィラ胚の3Dゲノム再編成を駆動する.

Fides Zenk ^1,2, Yinxiu Zhan ^3,4, Pavel Kos ³, Eva Löser ¹, Nazerke Atinbayeva ^1,2,5, Melanie Schächtle ¹, Guido Tiana ⁶, Luca Giorgetti ⁷, Nicola Iovino ⁸

Fides Zenk ^1,2, Yinxiu Zhan ^3,4, Pavel Kos ³

¹Max Planck Institute of Immunobiology and Epigenetics, Freiburg im Breisgau, Germany.
²Albert-Ludwigs-Universität Freiburg, Freiburg im Breisgau, Germany.
³Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland.
⁴University of Basel, Basel, Switzerland.
⁵CIBSS - Centre for Integrative Biological Signalling Studies, University of Freiburg, Freiburg im Breisgau, Germany.
⁶Università degli Studi di Milano and INFN, Milan, Italy.
⁷Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland. luca.giorgetti@fmi.ch.
⁸Max Planck Institute of Immunobiology and Epigenetics, Freiburg im Breisgau, Germany. iovino@ie-freiburg.mpg.de.

⁰Max Planck Institute of Immunobiology and Epigenetics, Freiburg im Breisgau, Germany.

Nature +

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2021年4月15日

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PubMedで要約を見る

まとめ

この要約は機械生成です。

ヘテロクロマチンタンパク質1a (HP1a) は,初期のドロソフィラ胚の3Dゲノム組織を確立するために不可欠です. HP1aは,ペリセントロメリック・クラスタリング,染色体折り,B区画形成を誘導し,ゲノム構造の表遺伝的調節におけるその役割を明らかにする.

科学分野

発達生物学
ゲノミクス
エピジェネティクス

背景

初期の胚の発達により基本的な3Dゲノム組織が確立されます
de novo ゲノム構造を駆動するメカニズムはほとんど不明である.

研究の目的

ドロソフィラの初期の3Dゲノム組織の基礎にある分子メカニズムを調査する.
ゲノム構造の確立におけるヘテロクロマチンタンパク質1a (HP1a) の役割を決定する.

主な方法

染色体形状捕捉 (Hi-C)
高通量配列化 (ChIP-seq) によるクロマチンの免疫降水
3D DNA 光 in situ ハイブリダイゼーション (3D DNA FISH)
ポリマーシミュレーション

主要な成果

HP1aは新しい3Dゲノム組織に不可欠です.
HP1a結合は,ペリセントロメリックヘテロクロマチンで,ペリセントロメリッククラスタリングを媒介する.
染色体の腕内のHP1a結合は染色体の折りたたみとB区画の形成を誘導する.
A区画の形成はHP1aとは独立しており,代替メカニズムを示唆している.

結論

HP1aは,初期胚のグローバル3Dゲノム構造を確立するための重要な表遺伝子調節体です.
HP1aは,不活性 (B) と活性 (A) の染色体区画の組織化において異なる役割を果たします.

関連する実験動画

自動的に一致したビデオです Contact us もしそれらが関連していない場合

Generation of Genome-wide Chromatin Conformation Capture Libraries from Tightly Staged Early <em>Drosophila</em> Embryos

Generation of Genome-wide Chromatin Conformation Capture Libraries from Tightly Staged Early Drosophila Embryos

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Drosophila Embryo Preparation and Microinjection for Live Cell Microscopy Performed using an Automated High Content Analyzer

Drosophila Embryo Preparation and Microinjection for Live Cell Microscopy Performed using an Automated High Content Analyzer

Published on: January 19, 2021

Imaging and Analysis of Tissue Orientation and Growth Dynamics in the Developing <em>Drosophila</em> Epithelia During Pupal Stages

Imaging and Analysis of Tissue Orientation and Growth Dynamics in the Developing Drosophila Epithelia During Pupal Stages

Published on: June 2, 2020

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関連する概念動画

Polytene Chromosomes

Polytene Chromosomes

Polytene chromosomes are giant interphase chromosomes with several DNA strands placed side by side. They were discovered in the year 1881 by Balbiani in salivary glands, intestine, muscles, malpighian tubules, and hypoderm of larvae Chironomus plumosus. Hence, these are also called "Salivary gland chromosomes." These are found in insects of the order Diptera and Collembola; in certain organs of mammals; and synergids, antipodes of flowering plants. Polytene chromosomes are also...

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