ミトコンドリア複合体II遺伝子であるSDHDの変異は,遺伝性パラガングリオーマで発生する
B E Baysal1, R E Ferrell, J E Willett-Brozick
1Department of Psychiatry, The University of Pittsburgh Medical Center, Pittsburgh, PA 15213-2593, USA. baysalbe@msx.upmc.edu
Science (New York, N.Y.)
|February 5, 2000
まとめ
SDHD遺伝子の細菌系変異は,遺伝性パラガングリオマ (PGL) と関連しています. この研究は,ミトコンドリアとサクシネート-ウビキノン酸化還元酵素 (cybS) タンパク質が,頸動脈体の腫瘍における役割を強調しています.
科学分野:
- 遺伝学 遺伝学とは
- 腫瘍学 腫瘍学
- ミトコンドリア生物学
背景:
- 遺伝性パラガンglioma (PGL) は,しばしば頭と首の頸動脈体 (CB) の良性腫瘍を含む.
- CBは,血液中の酸素レベルに敏感な化学受容器官である.
- PGLの遺伝パターンの以前の理解は不完全でした.
研究 の 目的:
- 遺伝性パラガンglioma (PGL) の遺伝的基礎を調査する.
- 罹患家族におけるPGLの原因となる特定の遺伝子を特定する.
- 特定された遺伝子が腫瘍の発達と正常な生理学における役割を理解する.
主な方法:
- 遺伝性パラガングリオマ (PGL) を有する家族の遺伝子分析.
- 染色体11q23.23のSDHD遺伝子の生殖線変異スクリーニング
- 遺伝子インプリントパターンの調査.
主要な成果:
- PGL.の家族におけるSDHD遺伝子の生殖系変異が特定されました.
- SDHDは,ミトコンドリア呼吸器連鎖のスッキナート-ウビキノン酸化還元酵素のサブユニットであるcybSをコードする.
- PGL.に対する期待とは対照的に,SDHD遺伝子インプリントの証拠は見つかりませんでした.
結論:
- ミトコンドリアは,特定のパラガンリオーマの病原性に関与しています.
- SDHDによって暗号化されたcybSタンパク質は,正常な頸動脈体の生理学 (CB) に関する役割を果たします.
- SDHD変異は,遺伝性パラガングリオマの発達に関する新しい理解を提供します.
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