脳卒中の遺伝学が 薬の発見と 血統の違いによるリスク予測に 役立つ
Aniket Mishra1, Rainer Malik2, Tsuyoshi Hachiya3
1Bordeaux Population Health Research Center, University of Bordeaux, Inserm, UMR 1219, Bordeaux, France.
Nature
|September 30, 2022
まとめ
この研究では,様々な祖先の脳卒中リスクに対する 89の新しい遺伝的位置を特定し,脳卒中の原因の理解を向上させ,全集団のより良い遺伝的リスク予測ツールを可能にしました.
科学分野:
- 遺伝学
- ゲノミクス
- 流行病学について
- 心血管疾患の研究
背景:
- 脳卒中は世界的な死因の1つであり,以前の遺伝学の研究は主にヨーロッパの人々に焦点を当てていました.
- この祖先のバイアスは,発見の一般化と公平なリスク予測ツールの開発を制限しています.
- 異なる祖先の遺伝的危険因子を理解することは 全世界の脳卒中予防と治療に不可欠です
研究 の 目的:
- 脳卒中に関連した新しい遺伝的位置を特定するために,大規模なクロスアセンストリー全ゲノム関連研究 (GWAS) メタ解析を実施する.
- 多様な集団で特定された位置を検証し,潜在的な因果的な遺伝子と変異を調査する.
- 新薬標的の遺伝的証拠を調査し,脳卒中リスク予測のための統合的多遺伝子スコアを開発する.
主な方法:
- 5つの祖先から11万以上の脳卒中の症例と150万の対照群を対象としたGWASの元分析.
- 特定された脳卒中リスクロキーの内部検証と独立した複製
- クロス・アセンストリー・ファインマッピング,イン・シリコ・ミュータゲネシス,トランスクリプトーム・ワイド,プロテーム・ワイド関連研究 (TWAS/PWAS) で,因果的な遺伝子/変異を特定する.
- 血管リスク因子GWASを統合し,統合的多遺伝子スコアを作成する.
主要な成果:
- 脳卒中およびそのサブタイプに関する89の独立した関連信号 (61の新規ロシ) の特定.
- 原発性脳卒中リスクの87%と二次性脳卒中リスクの60%の複製が祖先間で行われ,効果の大きさは高い相関関係にある.
- 推定的な因果遺伝子の識別 (例えば,SH3PXD2A,FURIN) と変種 (例えば,GRK5,NOS3)
- F11,KLKB1,PROC,GP1BA,LAMC2,VCAM1を潜在的薬物標的として支持する遺伝的証拠
- 統合的多遺伝子スコアは,臨床的危険因子とは無関係に,ヨーロッパ,東アジア,アフリカの祖先における血栓性脳卒中を正確に予測しました.
結論:
- この大規模なGWASは 脳卒中の遺伝子構造に 重要な洞察力を与えてくれます
- この研究では,新しいリスクロシオ,潜在的な因果メカニズム,そして多様な集団に適用可能な有望な薬物標的を特定しています.
- 開発された多遺伝子リスクスコアは 血栓性脳卒中を予測する有用性を示し,改善された公平な遺伝子リスク評価ツールへの道を開いています.
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