在X链接的迪斯顿症-帕金森症中,马赛克分离的重复中断的稳定性
Joshua Laß1, Theresa Lüth1, Kathleen Schlüter1
1Institute of Neurogenetics, University of Lübeck, Lübeck, Germany.
概括
在X-链接的 dystonia-parkinsonism (XDP) 中,影响动机长度和序列 (mDRILS) 的马赛克分离重复中断显示出代际稳定性. 更高的AGGG频率可能会稳定TAF1 SVA重复,这表明mDRILS是潜在的疾病修饰剂.
科学领域:
- 遗传学 遗传学 是一个
- 神经退行性疾病 神经退行性疾病
- 分子生物学分子生物学
背景情况:
- 链接X型 dystonia-parkinsonism (XDP) 是一种成人发病的神经退行性疾病.
- 影响TAF1 SVA重复通道的动图长度和序列 (mDRILS) 的马赛克分离重复中断与XDP相关.
- 特定的AGGG [5'-SINE-VNTR-Alu(AGAGGG) 2AGGG(AGAGGG) n]mDRILS影响重复稳定性和发病时的年龄.
研究的目的:
- 为了研究跨代mDRILS频率的稳定性.
- 在XDP中评估 (AGAGGG) n重复长度在父子传输中的稳定性.
- 探索AGGG频率和重复长度变化之间的关系.
主要方法:
- 对56个家庭 (130个人) 进行TAF1 SVA重复长度和mDRILS.代传染的分析.
- 在长距离PCR放大后TAF1 SVA的长读DNA测序.
- 使用消除噪音的重复寻找器 (NCRF) 检测重复数和mDRILS.
主要成果:
- 在65名儿童中,在51名儿童中观察到重复的长度收缩或扩张.
- AGGG频率在几代人中保持稳定 (中位数为0.074),但在扩张的儿童中,与保留/收缩的儿童相比,其频率较低.
- 在物流回归模型中,AGGG频率显著预测了扩张或保留/收缩结果.
结论:
- 更高的AGGG频率可能有助于在XDP中跨代重复稳定.
- mDRILS代表了一个潜在的疾病修饰因子,具有显著的代际影响.
- 对mDRILS的进一步研究对于理解XDP病原体至关重要.
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