低密度リポプロテインのピーク粒子の直径に影響を与える17q21染色体上の主要な定量的な特性の場所の証拠
Yohan Bossé1, Louis Pérusse, Jean-Pierre Després
1Lipid Research Center, CHUL Research Center, Laval University, Sainte-Foy, Québec, G1V 4G2, Canada.
Circulation
|May 7, 2003
まとめ
この研究では,染色体17qのLDL粒子のサイズに影響を与える主要な遺伝子を特定しました. この発見は,冠動脈疾患の危険因子と,脂質代謝に対する遺伝的貢献の理解を前進させています.
科学分野:
- 遺伝学 遺伝学とは
- 心血管疾患に関する研究
- 脂質代謝についてです.
背景:
- 小さい,密度の低い低密度リポプロテイン (LDL) 粒子は,冠動脈疾患 (CHD) のリスクと関連しています.
- 遺伝的要因は,LDL粒子のサイズに大きく影響し,主要な遺伝的場所の証拠があります.
- 以前の関連性および関連性研究は,LDL粒子の大きさの変化に責任を負う遺伝子を明確に特定できませんでした.
研究 の 目的:
- LDLピーク粒径 (LDL-PPD) に影響する遺伝的位置を特定するために全ゲノムスキャンを行う.
- LDL粒子の大きさの遺伝的構造と,心血管疾患の危険因子との関連を調査する.
主な方法:
- クエベック・ファミリー研究から236の核家族で,オートソームの全ゲノムスキャンが行われました.
- LDL-PPDは681人の被験者のグラデントゲル電泳を用いて測定されました.
- 関連分析は,442の遺伝子型マーカーを用いたシブラペアとバリエンスコンポーネントの両方の方法を使用した.
主要な成果:
- LDL-PPDの主要な定量特征位置 (QTL) は,染色体17q21.33 (マーカーD17S1301) で,最大LODスコアは6.76.1と特定されました.
- また,染色体1p31,2q33.2,4p15.2,5q12.3,および14q31.3で非常に示唆的な関連性証拠が発見された.
- アポリポプロテインH,アポリポプロテインE受容体2,フォスフォリパゼA2ファミリーメンバー,およびHMG-CoA還元酵素を含む候補遺伝子は,リンクピークの近くに位置づけられました.
結論:
- ゲノム全体のスキャンは,LDL-PPDに影響を与える17q染色体上の主要なQTLの強力な証拠を提供します.
- 他の染色体上の追加の位置も,LDL粒子の大きさの変動に寄与する.
- これらの発見は,LDL粒子のサイズとCHDリスクの遺伝的決定因子の理解を進める.
関連する概念動画
02:25Centrosome Duplication
The primary microtubule organizing center (MTOC) in animal cells is the centrosome. A centrosome has two cylindrical centrioles at its core. Each centriole consists of nine sets of three microtubules held together by proteins. The centrioles are positioned at right angles to each other and surrounded by a shapeless protein cloud called the pericentriolar matrix, or pericentriolar material (PCM).
To ensure that each daughter cell receives a centrosome after cell division, centrosome duplication...
To ensure that each daughter cell receives a centrosome after cell division, centrosome duplication...
01:20The Retinoblastoma Gene
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
02:25Centrosome Duplication
The primary microtubule organizing center (MTOC) in animal cells is the centrosome. A centrosome has two cylindrical centrioles at its core. Each centriole consists of nine sets of three microtubules held together by proteins. The centrioles are positioned at right angles to each other and surrounded by a shapeless protein cloud called the pericentriolar matrix, or pericentriolar material (PCM).
To ensure that each daughter cell receives a centrosome after cell division, centrosome duplication...
To ensure that each daughter cell receives a centrosome after cell division, centrosome duplication...
01:20The Retinoblastoma Gene
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...