プロテオーム全体のスケールでの遺伝的変異の影響を定義する
Joel M Chick1, Steven C Munger2, Petr Simecek2
1Harvard Medical School, Boston, Massachusetts 02115, USA.
Nature
|June 17, 2016
まとめ
遺伝的変異は遺伝子発現に影響を与える遺伝的変異によってタンパク質レベルに大きな影響を与える. この研究は,多数のタンパク質定量特征ロシ (pQTL) を特定し,プロテオームの多様性に影響する複雑な規制ネットワークを明らかにした.
科学分野:
- ゲノミクス
- プロテオミクス
- システム生物学
背景:
- 遺伝的多様性は現象的差異の主要な原動力である.
- 遺伝的多様性が タンパク質発現にどのように影響するかを理解することは 複雑な特性を解読するのに不可欠です
- 以前の研究は主にトランスクリプトレベルの変化に焦点を当てていた.
研究 の 目的:
- ネズミの肝臓プロテオームの遺伝的影響を 総合的にマッピングする.
- 遺伝子変異とタンパク質発現の調節の相互作用を調査する.
- タンパク質の豊富さに関連した遺伝子変異 (pQTL) を特定する.
主な方法:
- タンパク質の定量化のために多重化,質量スペクトロメトリーベースのタンパク質学的アプローチを使用した.
- ゲノム全体のトランスクリプトとタンパク質発現データを統合した.
- 遺伝的変異体,トランスクリプト,タンパク質の因果関係を明らかにするために,媒介分析を用いた.
主要な成果:
- 2,866のタンパク質定量特征ロシ (pQTL) が特定され,局所変異の割合が高くなった.
- タンパク質の豊富さを調節するトランスクリプションとポストトランスクリプションの両方のメカニズムの証拠を提供した.
- タンパク質とタンパク質の直接的な相互作用の 広範なネットワークを発見した.
- 地元の遺伝子型が独立したマウスコホートにおけるタンパク質の豊富さを予測できることを示した.
結論:
- 自然の遺伝的多様性は 複雑な規制メカニズムを通して プロテオームを大きく形作ります
- この研究は,タンパク質レベルでの遺伝子型-フェノタイプ関係を理解するための貴重なリソースを提供します.
- 将来の研究で これらの発見を活用して 病気やその他の複雑な特徴の 遺伝的根拠を探求することができます
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