同期したミトコンドリアと細胞翻訳プログラム
Mary T Couvillion1, Iliana C Soto1, Gergana Shipkovenska1
1Department of Genetics, Harvard Medical School, Boston, Massachusetts 02115, USA.
Nature
|May 27, 2016
まとめ
ミトコンドリアのエネルギー生産には 核とミトコンドリアの遺伝子の調整が必要です この研究では,核ゲノムがミトコンドリアと細胞細胞の変換を効率的な酸化リン酸化複合体の合成に導いていることが明らかになった.
科学分野:
- 細胞生物学
- 分子生物学
- ゲノミクス
背景:
- 酸化性リン酸化 (OXPHOS) は細胞のエネルギー生成に不可欠です.
- OXPHOS複合体は核とミトコンドリアの両方のゲノムによって暗号化され,共同調節の課題となっています.
- これまでのゲノム研究では,ミトコンドリアの遺伝子共同調節が ほとんど見過ごされていた.
研究 の 目的:
- 核とミトコンドリアの遺伝子発現の共同調節を研究する.
- OXPHOS複合体の合成をどのようにSaccharomyces cerevisiaeが調整するかを調べる
- ミトコンドリアにおけるグローバルな遺伝子調節の研究のための基盤を確立する.
主な方法:
- ミトコンドリアと核の遺伝子発現をSaccharomyces cerevisiaeで監視する
- ミトコンドリアの生殖過程で 全細胞ゲノムプロファイリングを使用する.
- OXPHOS遺伝子のトランスクリプトレベルを分析する
主要な成果:
- 核とミトコンドリアでコードされたOXPHOSトランスクリプトのレベルは一致して調節されません.
- ミトコンドリアと細胞変換は,迅速に,ダイナミックに,同期的に調節されます.
- 細胞変換はミトコンドリア変換を一方的に制御する.
結論:
- 核ゲノムはミトコンドリアと細胞細胞の翻訳をオーケストラ化し,時宜にOXPHOS複合体の合成を行う.
- これはミトコンドリアのプロテオームを形作る上で 評価されていない規制層を表しています
- この研究は,ミトコンドリアの遺伝子調節の研究のためのゲノムアプローチを提供します.
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