ForSpEC:一个紧的法医表观遗传年龄钟用于精子细胞,具有跨平台验证
Aleksandra Pisarek-Pacek1, Joanna Rudnicka2, Rezvan Noroozi3
1Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa Street 9, Krakow 30-387, Poland.
Forensic science international. Genetics
|January 21, 2026
概括
法医DNA情报得到了新的精子表观遗传时钟ForSpEC的提升,仅使用7个CpG标记. 这个工具可以准确地预测精子DNA的年龄,帮助法医调查.
科学领域:
- 法医科学 法医科学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 基因组分析 基因组分析
背景情况:
- 准确的基于DNA的预测模型对于法医DNA情报至关重要.
- 预测精子的表观遗传年龄,由于男性生殖细胞的特殊生物学,存在独特的挑战.
研究的目的:
- 为了评估精子年龄预测的生殖线年龄 (GLA) 计算器.
- 开发一套精细化的精子细胞特异标记器,用于法医应用.
- 使用Ion AmpliSeqTM技术创建一个集成的实验室工具,用于有针对性的甲基化分析.
主要方法:
- 在212个精子样本中测量了全基因组DNA甲基化,使用Infinium MethylationEPIC阵列.
- 应用了生殖线年龄 (GLA) 模型,达到2.82年的平均绝对误差 (MAE).
- 确定了八个最佳CpG标记的子集,在ForSpEC模型中改进为七个,并使用Ion AmpliSeqTM数据进行验证.
主要成果:
- 该ForSpEC模型预测了年龄,MAE为3.13年的测试样本和3.76年的离子AmpliSeqTM数据.
- 在ForSpEC中的七个CpG是精子表观遗传年龄的最准确的预测者之一.
- 在ForSpEC的研究中,Ion AmpliSeqTM技术对于法医DNA甲基化分析具有很高的实用性.
结论:
- 这项研究介绍了ForSpEC,这是一个非常精确的法医表观遗传钟,用于精子,仅使用七个CpG标记.
- 与261 CpG GLA模型相比,ForSpEC的精度略有降低.
- 这些发现突显了针对性DNA甲基化分析的有效性,使用Ion AmpliSeqTM用于法医应用.
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