转录组起点的确定:基于分布的方法和基于基因组的方法的比较
Eduardo Costa1, Kamin J Johnson2, Carl A Walker2
1Corteva Agriscience, Sao Paulo, Brazil.
Frontiers in genetics
|May 24, 2024
概括
使用个体基因分布计算转录基因起点 (tPOD) 是基因组方法的可行替代方案. 这种方法提供了准确的毒性POD估计,特别是对于具有有限基因注释的物种.
科学领域:
- 毒理学和生物信息学
- 环境健康风险评估环境健康风险评估
- 基因组学和计算生物学
背景情况:
- 确定毒性起点 (POD) 对于化学品风险评估至关重要.
- 转录的POD (tPOD) 值可以估计毒性POD.
- 目前的tPOD方法往往涉及基因映射,风险信息丢失在标注不良的物种.
研究的目的:
- 测试单个基因分布方法是否产生类似的tPOD值与基于基因组的方法.
- 评估基因组结构对tPOD准确性的影响.
- 为了确定个体基因分布方法的可行性,用于tPOD计算.
主要方法:
- 使用了来自Open TG-GATE的79个分子的老鼠转录组数据.
- 基于基因组的方法 (四种结构) 与个体基因分布方法 (五种类型) 的tPOD值进行比较.
- 评估方法之间的一致性,特别是对于具有足够剂量响应的探针组的分子.
主要成果:
- 在所有测试方法中观察到tPOD值的高度一致性,特别是在具有≥300个剂量响应探头 (90%在4倍内) 的分子中.
- 随机基因组与生物衍生基因组相比显示出最小的差异,这表明基因组tPOD中生物信息的使用有限.
- 个体基因分布方法被证明与基因组方法可比.
结论:
- 个体基因分布方法是tPOD计算的可行,节的替代方案.
- 这些方法绕过了基因绘图和生物组织知识的需求.
- 它们适用于所有物种,包括那些基因注释差的物种,提高风险评估能力.
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