通过下一代测序进行牛亲属测试的综合基因分析
Jiaojiao Geng1,2, Jiajun Liu1,2, Zhentang Liu1,2
1Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
Electrophoresis
|February 28, 2026
概括
使用下一代测序 (NGS) 的新牛DNA测试小组为父权争端提供了卓越的准确性. 这种先进的方法克服了旧技术的局限性,提高了牛的基因测试可靠性.
科学领域:
- 兽医遗传学 兽医遗传学
- 法医科学 法医科学 法医科学
- 分子生物学分子生物学
背景情况:
- 牛的亲子测试目前依赖于二核酸STR (di-STR) 或SNP分析.
- Di-STR标记器通常会产生口吃的文物,影响基因类型的准确性.
- 单核酸多形态 (SNP) 缺乏足够的多形态水平来进行可靠的识别.
研究的目的:
- 开发和验证一个新的集成下一代测序 (NGS) 面板,用于牛.
- 克服现有的牛DNA测试方法的局限性.
- 为了提高牛基因分析的准确性和效率,用于法医应用.
主要方法:
- 开发了一个NGS面板,整合了33个di-STR和30个四核酸STR (四核酸STR).
- 包括线粒体位移循环 (D-loop) 区域,细胞染色体b (CYTB) 和重组激活基因1 (RAG1) 在面板中.
- 使用血液和头发样本验证了小组,评估基因型成功,放大效率和一致性.
主要成果:
- 实现了高的平均基因型定型成功率99.6%.
- 在大多数STR位置证明了平衡的放大效率.
- 报告了血液和头发样本之间的平均基因型一致率为96.4%.
- 达到了高的区分能力 (1-1.8 × 10-13),并排斥的累积概率 (1-1.7 × 10-8) 对于 duos.
结论:
- 新的NGS面板在目前基于毛细管电泳 (CE) 的牛分析系统上提供了显著的进步.
- 该面板为牛的法医遗传测试提供了卓越的准确性,多重能力和效率.
- 通过案例分析,在解决牛父权争端方面证明了适用性和可靠性.
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