AFF3的变异特异性病理生理机制不同地影响转录组配置文件
Sissy Bassani1, Jacqueline Chrast1, Giovanna Ambrosini2,3
1Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland.
medRxiv : the preprint server for health sciences
|January 31, 2024
概括
AFF3基因功能的微小变化导致KINSSHIP综合征,导致智力障碍和发育问题. 在AFF3中,功能丧失和主导负变异都是有害的,影响基因表达和细胞通路.
科学领域:
- 遗传学和分子生物学
- 发展生物学 发展生物学
- 人类遗传学 人类遗传学
背景情况:
- 由智力障碍,中粒体形和马脏为特征的KINSSHIP综合征与AFF3基因中的新变异有关.
- 之前的研究表明存在主导-负 (DN) 机制,其中增加的AFF3水平会导致病理,并得到了小鼠和斑马鱼模型的支持.
研究的目的:
- 调查AFF3相关疾病的其他遗传模式.
- 使用体内和体外模型评估各种AFF3变异的致病性.
主要方法:
- 对智力障碍群体进行有害AFF3变异的查.
- 使用动物模型 (斑马鱼) 和细胞模型 (纤维细胞转录组学) 来评估变异效应.
- 分析不同的AFF3基因型,包括功能丧失 (LoF),主导阴性 (DN) 和复合异构体.
主要成果:
- 确定了一种类似KINSSHIP的AFF3重复病例,支持AFF3水平增加的病原性.
- 发现了与异合体LoF或双基误解AFF3变体相关的较轻症候群.
- 证明了AFF3中的同卵性LoF和DN变异会导致明显的转录组变化,不同影响DNA修复等途径.
- 斑马鱼模型证实了来自aff3剥离的神经缺陷,并表明一些人类错误感变体未能挽救这些缺陷.
结论:
- 在AFF3中的基因变异,即使是轻微的,也可能是有害的.
- 与AFF3变异相关的高向性强调了精确的AFF3基因功能在发育中的关键作用.
关键词:
异构体是什么?异构体是什么?异构体是什么?马的脏 马的脏智力障碍 智力障碍是一种智力障碍.介质性失育症 (Mesomelic Dysplasia) 是一种细胞失育症.转录组 (transcriptome) 是一个转录组.更多相关视频
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