从配对的 H 和 L 链 BCR 序列中推断 B 细胞系谱,使用 Dowser
Cole G Jensen1, Jacob A Sumner1,2, Steven H Kleinstein1,3,4
1Program in Computational Biology and Bioinformatics, Yale University, New Haven, CT.
Journal of immunology (Baltimore, Md. : 1950)
|April 1, 2024
概括
在B细胞受体 (BCR) 遗传学分析中纳入重 (H) 和轻 (L) 链,可显著提高准确性和可重复性. 建议使用单独的H和L链分区的最大概率方法,特别是在混合测序数据类型时.
科学领域:
- 免疫学 免疫学 免疫学
- 生物信息学是一种生物信息学.
- 计算生物学 计算生物学
背景情况:
- 抗体 (Abs) 对于免疫反应至关重要,包括基因可变的重 (H) 和轻 (L) 链.
- B细胞受体 (BCRs) 通过体质突变和选择多样化,形成具有明显突变的B细胞克隆.
- 从BCR序列的家族遗传树历史上重建了克隆突变历史,但从单细胞组合H和L链带来了新的挑战.
研究的目的:
- 通过对联的H和L链序列来研究构建B细胞系谱的最佳策略.
- 评估将L链纳入植物遗传树的准确性和可重复性的影响.
- 在数据类型混合时,识别和解决遗传树构建中的偏差.
主要方法:
- 利用来自B细胞受体 (BCR) 的重 (H) 和轻 (L) 链序列.
- 对比了各种类遗传树建方法,评估了包括L链的影响.
- 采用最大概率方法,对H和L链基因分区进行分离的分支长度,以纠正数据偏差.
主要成果:
- 整合L链显著提高了所有测试方法的遗传树准确性和可重复性.
- 包括L链的改进超过了树木建设方法之间的差异.
- 使用单独的H和L链分区的最大概率方法有效消除了分支长度偏差,特别是在混合批量和单细胞测序数据时.
结论:
- 配对的H和L链分析对于推断B细胞类型来说是优越的.
- 建议使用具有明显的H和L链分区的最大概率方法来进行强大的基因推理,特别是在混合数据的情况下.
- R包Dowser实现了这些推的方法,用于B细胞受体的遗传学分析.
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