在一个数据库中,负责孟买或巴拉孟买表型的FUT1变异
Mikiko Soejima1, Yoshiro Koda2
1Department of Forensic Medicine, Kurume University School of Medicine, Kurume, 830-0011, Japan.
Scientific reports
|October 14, 2023
概括
具有罕见的孟买和巴拉孟买血型表型的个体由于FUT1基因变异而改变了ABO (H) 抗原表达. 功能性测定确定了非功能和功能弱的FUT1等位基因,这对于理解这些输血关键表型至关重要.
科学领域:
- 遗传学 是一个遗传学.
- 免疫学 免疫学 免疫学
- 血液学 血液学 血液学
背景情况:
- 孟买和准孟买的表型是由H型α(1,2) fucosyltransferase活性 (编码为FUT1) 缺乏的结果,导致缺席/弱弱的ABO(H) 抗原表达.
- 由于存在抗H抗体,这些表型的个体需要特定的输血,这带来了临床挑战.
研究的目的:
- 调查与孟买和巴巴孟买表型相关的FUT1等位基因.
- 评估FUT1基因中未表征的非同义单核酸多态 (SNPs) 对α(1,2) 核酸转移酶活性的功能影响.
主要方法:
- 使用过渡表达研究来评估FUT1变种的酶活性.
- 使用四种不同的在线软件工具进行的in silico分析预测了FUT1SNP的功能影响.
- 这项研究检查了来自Erythrogene数据库的22个未表征的非同义SNP.
主要成果:
- 过渡性表达研究确定了两个非功能FUT1等位基因 (c.503C>G和c.749G>C) 和一个功能弱的等位基因 (c.799T>C).
- 计算分析预测了几个FUT1等位基因的蛋白质功能受损,包括那些功能性地识别的.
- 发现非功能性FUT1等位基因与非分泌性等位基因相关,这表明同胞体会表现出孟买表型.
结论:
- 功能性测试对于表征非同义FUT1SNP很有价值,特别是当相应的表型无法获得时.
- 已识别的FUT1变种为孟买和巴巴孟买表型的遗传基础提供了洞察力.
- 了解这些遗传变异对于输血兼容性和管理罕见血型至关重要.
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