プライマリオープンアングルグラオコマの原因となる遺伝子の特定

E M Stone¹, J H Fingert, W L Alward

¹Department of Ophthalmology, University of Iowa College of Medicine, Iowa City, IA 52242, USA.

Science (New York, N.Y.)

|January 31, 1997

まとめ

TIGR遺伝子の変異は,盲目の主要な原因である一次開角緑内障 (POAG) と関連しています. これらの遺伝子変異を特定することは,グラウコマの早期診断と治療に役立ちます.

科学分野:

オフタルモロジック (眼科)
遺伝学遺伝学とは
分子生物学は分子生物学である.

背景:

グラウコマは,世界中で不可逆的な失明の主要な原因です.
視神経の損傷によって特徴付けられ,しばしば高眼内圧と関連しています.
染色体1q結合開角緑内障 (GLC1A) は,遺伝的原因について調査されています.

研究の目的:

染色体1q結合開角緑内障 (GLC1A) と関連した候補遺伝子を特定する.
罹患家族内の優先遺伝子の変異をスクリーニングする.
グラウコマ患者および対照群における特定された突然変異の有病率を評価する.

主な方法:

シーケンスのタグ付きサイト (STS) のコンテンツ分析とハプロタイプ共有は,疾患間隔を狭めるために使用されました.
放射線ハイブリッドマッピングを使用して,候補遺伝子を特定しました.
変異スクリーニングは,13人の緑内障患者と対照群で実施されました.

主要な成果:

トラベキュラーメッシュワークタンパク質 (TIGR) をコードする遺伝子が,重症疾患領域にマッピングされました.
TIGR遺伝子内の3つの変異が13人の緑内障患者 (3.9%の罹患率) で特定されました.
1つの変異は,対照個体 (0.2%の流行率) にも検出されました.

結論:

TIGR遺伝子の変異は,プライマリオープンアングル緑内障と関連しています.
これらの発見は,グラウコマの早期診断を容易にする.
早期診断は,効果的な管理と視力喪失の予防に不可欠です.

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