需要进行表观毒性测试的需要
Thomas Hartung1,2, Lena Smirnova1, Stefan Platz3
1Center for Alternatives to Animal Testing (CAAT), Johns Hopkins University, Doerenkamp-Zbinden Chair for Evidence-based Toxicology, Bloomberg School of Public Health and Whiting School of Engineering, Baltimore, MD, USA.
ALTEX
|October 14, 2025
概括
表观遗传学,研究基因表达因环境因素而发生的变化,为了解和预测疾病风险提供了新的途径. 将表观遗传分析纳入毒理学可以导致更安全的产品和更好的保护弱势群体.
科学领域:
- 毒理学 毒理学 毒理学
- 遗传学 遗传学 是一个
- 环境健康 环境健康
背景情况:
- 细胞表型是由遗传学和外部因素 (暴露体) 决定的,涉及基因x环境相互作用 (GxE).
- 表观遗传学,包括DNA甲基化和基因组修饰,影响基因可访问性和蛋白质表达.
- 表观遗传变化可以保留暴露的记忆,影响对后续环境因素的敏感性.
研究的目的:
- 在毒理学中提供表观遗传学的概述.
- 在毒性评估中倡导对表观遗传变化的系统评估.
- 通过与人类相关的模型,生物标志物和人工智能提出预测个人风险的策略.
主要方法:
- 对表观遗传机制的审查 (DNA甲基化,基因素修饰,非编码RNA,DNA包装).
- 讨论表观遗传学在基因x环境相互作用 (GxE) 和疾病病理学中的作用.
- 建议工具和策略,包括与人类相关的模型,生物标志物和人工智能 (AI).
主要成果:
- 表观遗传学为了解环境暴露如何影响健康结果提供了一种机制.
- 暴露的表观遗传记忆可以揭示混合物毒性和非同时暴露的洞察力.
- 了解表观遗传学可以为治疗癌症和神经退行性疾病等疾病的新药的开发提供信息.
结论:
- 将表观遗传学纳入毒理学评估对于了解疾病和预测风险至关重要.
- 对表观遗传变化的系统评估可以提高毒性评估和监管实践.
- 利用表观遗传学可以带来更安全的产品,并为个人和后代提供更好的保护.
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