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相关概念视频

Mutagenicity and Carcinogenicity01:25

Mutagenicity and Carcinogenicity

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Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...
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Epigenetic Regulation01:46

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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Epigenetic Regulation01:37

Epigenetic Regulation

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Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
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相关实验视频

Updated: Jan 15, 2026

Human Pluripotent Stem Cell Based Developmental Toxicity Assays for Chemical Safety Screening and Systems Biology Data Generation
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Human Pluripotent Stem Cell Based Developmental Toxicity Assays for Chemical Safety Screening and Systems Biology Data Generation

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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
PubMed
概括
此摘要是机器生成的。

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.

关键词:
通过DNA甲基化.表观遗传学是指表观遗传学.这是一个微型RNA.没有编码的RNA.毒性测试 毒性测试 毒性测试

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Toxicological Assays for Testing Effects of an Epigenetic Drug on Development, Fecundity and Survivorship of Malaria Mosquitoes
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Comprehensive Assessment of Germline Chemical Toxicity Using the Nematode Caenorhabditis elegans
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Comprehensive Assessment of Germline Chemical Toxicity Using the Nematode Caenorhabditis elegans

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相关实验视频

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Toxicological Assays for Testing Effects of an Epigenetic Drug on Development, Fecundity and Survivorship of Malaria Mosquitoes
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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.