重度の自閉症におけるδ-カテニン機能の喪失
Tychele N Turner1, Kamal Sharma2, Edwin C Oh3
11] Center for Complex Disease Genomics, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA [2] Predoctoral Training Program in Human Genetics and Molecular Biology, McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA [3] National Institute of Mental Health (NIMH) Autism Centers of Excellence (ACE) Genetics Consortium at the University of California, Los Angeles, Los Angeles, California 90095, USA.
Nature
|March 26, 2015
まとめ
研究者らは,女性における重度の自閉症に関連するCTNND2遺伝子の遺伝子変異を特定した. この発見は,複雑な神経発達障害を理解するために極端な症例の研究の重要性を強調しています.
科学分野:
- 神経発達障害 神経発達障害とは
- 遺伝学 遺伝学とは
- 分子生物学は分子生物学である.
背景:
- 自閉症スペクトル障害 (ASD) は複雑な神経発達障害で,男性の罹患率が高くなります.
- 多因子遺伝的仮説は,女性には,この疾患を現わすためにより大きな遺伝的負荷が必要であると示唆しています.
- 深刻な疾患を持つ女性によって豊かにされた複合家族の研究は,重要な自閉症遺伝子の識別を強化する可能性があります.
研究 の 目的:
- 女性に富んだ複合家族における自閉症の遺伝的基盤を調査する.
- これらの家族における重症疾患の発現に関連する特定の遺伝子と変異を特定する.
- ニューロンの発達とクロマチンの生物学における特定された変異の機能的影響を調査する.
主な方法:
- CTNND2遺伝子のミセンスと用量配列の変異の分析. 女性の富裕複合家族におけるCTNND2遺伝子のミセンスと用量配列の変異の分析.
- ゼブラフィッシュの胚アッセイと,野生型およびCtnnd2ヌルマウス胚からの培養ヒポカンパの神経細胞を用いた機能的検証.
- CTNND2.2の役割を明らかにするための遺伝子発現とネットワーク分析.
主要な成果:
- CTNND2遺伝子の有害な変異を重症の女性患者で特定する.
- これらのCTNND2変種に対する機能喪失効果の実証,機能分析による.
- ニューロンの発達におけるCTNND2の重要な役割と,クロマチンの生物学との関連を強調する.
結論:
- 女性に富んだ複合家族のような現象的極端の遺伝的分析は,自閉症のような多因子疾患を理解するために価値があります.
- CTNND2は,特に家族内の重症症例において,自閉症の遺伝的構造に関与しています.
- この発見は,自閉症と神経発達過程の遺伝的基礎のより深い理解に貢献します.
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