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C.655C>T变体的塞皮阿特林降解酶缺乏症:遗传和生物信息分析

Hosein Eslamiyeh¹, Fatemeh Sefid^2,3, Farzaneh Iravani³

¹Department of Pediatrics, Shahid Sadoughi University of Medical Science, Yazd, Iran.

Molecular syndromology

|August 7, 2025

概括

塞皮亚特林减少酶缺乏症 (SRD) 是一种罕见的精神运动障碍,通过全外因子测序来诊断. 这种基因分析确定了特定的SPR基因突变,有助于了解疾病并改善患者管理.

科学领域:

遗传学是一个遗传学.
神经科学是一个神经科学.
生物化学生物化学

背景情况:

塞皮亚特林减少酶缺乏症 (SRD) 是一种罕见的神经发育障碍,其特点是四二胺 (BH4) 合成中的酶缺陷.
常见的症状包括发育迟缓和低血压,影响精神运动发育.

研究的目的:

在精神运动延迟患者中确定SRD的遗传原因.
分析已识别的突变对Sepiapterin减少酶 (SPR) 蛋白结构和功能的影响.

主要方法:

为了进行基因分析,进行了全外体测序 (WES).
使用高性能液态染色学 (HPLC) 量化脑脊液 (CSF) 素水平.
生物信息分析用于建模SPR蛋白质结构,并预测突变的影响.

主要成果:

在HPLC分析中,CSF中发现了低水平的homovanillic acid和5-hydroxyindolacetic acid,这表明神经递质代谢障碍.
在SPR基因中,WES发现了一种同卵性非同义变异 (C.655C>T,p.Arg219Ter).
结构分析表明,p.Arg219Ter突变破坏了SPR蛋白的结合位.

结论:

整体外体序列测序为诊断像SRD这样的复杂神经发育障碍提供了快速有效的方法.
确定SRD的遗传基础可以改善患者的管理,并有助于预防不可逆转的并发症.

关键词:

生物信息学分析塞皮阿丁降解酶缺乏症整体外基因组的测序

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