年龄,起源和功能研究 导致家族高胆固醇血症的流行LDLR突变 在格兰卡纳利亚岛
Nicolás M Suárez1, Shifa Jebari-Benslaiman2, Roberto Jiménez-Monzón1
1Instituto Universitario de Investigaciones Biomédicas y Sanitarias, Universidad de Las Palmas de Gran Canaria, 35016 Las Palmas de Gran Canaria, Spain.
International journal of molecular sciences
|July 29, 2023
概括
在格兰卡纳利亚岛最常见的家族高胆固醇血症 (FH) 突变,p.(Tyr400_Phe402del) 在LDL受体 (LDLR) 基因中,起源于387年前. 这种致病变体会导致缺陷的LDL受体传输到细胞表面.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 心血管疾病研究研究
背景情况:
- 家族性高胆固醇血症 (FH) 是一种遗传性疾病,其特征是高的LDL胆固醇水平.
- 在LDL受体 (LDLR) 基因中的p.(Tyr400_Phe402del) 突变是格兰卡纳利亚岛最常见的FH原因.
- 了解创始突变的起源和功能影响对于遗传疾病管理至关重要.
研究的目的:
- 为了确定在格兰卡纳利亚岛上流行的p.(Tyr400_Phe402del) LDLR创始基因突变的年龄和起源.
- 为了研究这种特定的LDLR突变的功能后果.
- 根据其分子机制对突变进行分类.
主要方法:
- 对14个围绕受影响个体突变的微卫星位点的哈普洛型分析.
- 使用哈普洛型数据估计突变的年龄.
- 功能性研究以评估LDL受体表达和局部化.
主要成果:
- 确定了八种不同的突变载体单体型.
- 据估计,共同的祖先哈普洛型是387年 (110-1572年) 的,这表明后殖民起源.
- 表达的LDL受体蛋白被保留在内质网膜中,未能到达细胞表面.
结论:
- p.(Tyr400_Phe402del) 突变是格兰卡纳利亚的一个创始突变,可能起源于15世纪西班牙殖民之后.
- 这种LDLR突变被归类为2a类 (缺陷) 致病变体,原因是受体运输受损.
- 这些发现提供了对FH在这个特定人群中的遗传结构和病理生理学的见解.
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