在UBTF基因中的Frameshift变异与神经发育障碍有关
Sheng Yi1, Lingyun Fan2, Qiang Zhang1
1Genetic and Metabolic Central Laboratory, Guangxi Birth Defects Research and Prevention Institute, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, China.; Guangxi Clinical Research Center for Birth Defects, Guangxi Clinical Research Center for Pediatric Diseases, Guangxi Key Laboratory of Reproductive Health and Birth Defects Prevention, Guangxi Key Laboratory of Precision Medicine for Genetic Diseases, Guangxi Key Laboratory of Birth Defects and Stem Cell Biobank, Guangxi Key Laboratory of Birth Defects Research and Prevention, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, China.
上游绑定转录因子 (UBTF) 基因中的新框架转移变异会导致神经发育延迟,而不会引起神经回归. 这扩大了已知的UBTF基因疾病谱,并有助于基因型-表型相关性.
科学领域:
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
- 分子生物学分子生物学
背景情况:
- 上游结合转录因子 (UBTF) 基因编码了一种参与各种细胞功能的核蛋白.
- UBTF中的突变与神经发育障碍有关,包括儿童开始的神经退行症和全球发育迟缓.
- UBTF哈普洛缺陷与发育迟缓和明显的面部特征有关,但不是神经回归.
研究的目的:
- 在两个无关联的个体中调查精神运动发育迟缓和智力障碍的遗传基础.
- 识别和描述UBTF基因中的新型遗传变异.
- 为了阐明与UBTF平分不充分相关的基因型-表型相关性.
主要方法:
- 在两个患有精神运动发育迟缓和智力障碍的个体上进行了外体序列测试.
- 用RNA分析来评估已识别的遗传变异对UBTF基因表达的影响.
- 应用了ClinGen标准来确定基因与疾病的关联.
主要成果:
- 在受试者身上发现了UBTF基因中的两种截然不同的位变异 (c.2104del和c.1199del).
- RNA分析显示突变UBTF转录和替代拼接事件的表达减少.
- 在UBTF功能丧失变体和神经发育迟缓而没有神经回归之间建立了强烈的基因疾病关联.
结论:
- 这项研究扩大了已知的神经系统疾病的遗传和表型谱,这些神经系统疾病与UBTF单元缺陷有关.
- 这些发现为UBTF相关的神经发育条件的基因型-表型相关性提供了宝贵的见解.
- 在UBTF中功能丧失的变体被证实会导致神经发育延迟而没有神经回归.
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