在神经发育障碍中优先考虑de novo潜在的非法典拼接变体
Kuokuo Li1, Jifang Xiao2, Zhengbao Ling3
1Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China; NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), No 81 Meishan Road, Hefei, 230032, Anhui, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei, 230032, Anhui, China.
非正规拼接变体 (NCSV) 在神经发育障碍 (NDD) 中很常见,有助于疾病病理. 这项研究揭示了它们在未解决NDD患者中的重要作用和临床重要性.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 神经科学是一个神经科学.
背景情况:
- 在正规拼接位外的基因组变异 (±2) 可以导致异常的mRNA拼接,称为非正规拼接变异 (NCSV).
- 在神经发育障碍 (NDD) 中NCSVs的临床意义仍然在很大程度上未被探索.
- 了解NCSV对于诊断和解释NDD的遗传变异至关重要.
研究的目的:
- 研究NCSV在NDD患者中的贡献和临床相关性.
- 通过功能分析评估基因与NCSV和NDD之间的关联.
- 通过实验方法验证NCSVs对mRNA拼接的影响.
主要方法:
- 分析了来自47,574名NDD患者和对照的345,787个新变异 (DNV).
- 对候选NDD基因的功能丰富和蛋白质-蛋白质相互作用分析.
- 迷你基因测定试验验验证已识别的NCSVs的拼接效应.
主要成果:
- 与对照组相比,NDD患者中NCSV的患病率明显高于对照组 (p=0.02,OR=2.05).
- NCSVs和正规拼接变体 (CSVs) 影响了类似比例的NDD患者 (0.82%对0.76%).
- 经过验证的NCSV涉及的基因涉及谷氨酸突触和染色体重塑;9个基因有复发的NCSV,36个是新型或重新分类的变异.
结论:
- 在患有NDD的患者中,NCSV是常见且具有临床意义的因素.
- 这项研究强调了在NDD的遗传诊断中考虑NCSV的重要性.
- NCSVs有助于NDD的病理学,特别是在未解决的遗传病因病例中.
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