在WBP4中编码一个spliceosome蛋白的双基因功能丧失变体,导致一个可变的神经发育综合征
Eden Engal1, Kaisa Teele Oja2, Reza Maroofian3
1Department of Biochemistry and Molecular Biology, The Institute for Medical Research Israel-Canada, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112102, Israel; Department of Military Medicine and "Tzameret," Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel.
功能丧失的WW域结合蛋白4 (WBP4) 变体会导致严重的神经发育障碍. 这项研究确定了WBP4作为一种与结体病变相关的新基因,扩大了我们对遗传大脑异常的理解.
科学领域:
- 遗传学 遗传学 是一个
- 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:
- 拼接体蛋白对于RNA拼接至关重要,并与人类疾病 (拼接体病变) 有关.
- WW域结合蛋白4 (WBP4) 是早期结合体复合体的一个组成部分,以前没有与人类病理有关.
- 在线曼德尔人类遗传 (OMIM) 数据库中缺乏与WBP4相关的疾病关联.
研究的目的:
- 为了研究严重的神经发育综合征的遗传基础.
- 为了识别与结合体病变相关的新型基因.
- 确定WW域结合蛋白4 (WBP4) 在人类疾病中的作用.
主要方法:
- 基因匹配器被用来识别受影响的个人和家庭.
- 为了检测变异,进行了包括全外体测序在内的遗传分析.
- 免疫洗和RNA测序用于评估患者衍生纤维细胞中的蛋白质水平和拼接模式.
主要成果:
- 来自八个家庭的十个人出现了严重的神经发育综合征,包括低血压,全球发育迟缓和智力障碍.
- 在WBP4基因中发现了五种不同的同卵性功能丧失变异.
- 患者的纤维细胞显示完全缺少WBP4蛋白,并表现出与神经系统发育相关的基因的异常拼接模式.
结论:
- 在WBP4中双基功能丧失变体是导致一种新的神经发育障碍的原因.
- 这一发现扩大了人类状体病变的范围.
- WBP4对于正常的神经发育至关重要,其功能障碍导致综合征的呈现.
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