人类干细胞中微塑料的发育毒性,使用基于不良结果途径的综合测试和评估方法
Jaeseong Jeong1, Keon Kang1, Hyunwoo Kim1
1School of Environmental Engineering, University of Seoul, 163 Seoulsiripdae-ro, Dongdaemun-gu, Seoul 02504, Republic of Korea.
Toxicology
|August 28, 2025
概括
微/纳米塑料 (MNP) 对早期发育构成风险. 这项研究使用了人类胚胎干细胞的综合测试和评估方法 (IATA) 框架来评估聚烯MNP,推进非动物测试策略.
科学领域:
- 环境毒理学
- 发育生物学
- 纳米材料的安全性
背景情况:
- 微/纳米塑料 (MNP) 在人体组织中越来越多地被检测到,包括胎盘.
- 对于它们对早期人类发展的潜在影响存在担忧,但机制尚不清楚.
研究的目的:
- 使用综合测试和评估方法 (IATA) 框架评估聚乙烯 (PS) MNP 的发育毒性.
- 结合不良结果路径 (AOP) 的开发,实验测试和文献数据进行综合评估.
- 支持新出现的污染物的非动物测试策略的开发.
主要方法:
- 应用了IATA框架,包括AOP开发,综合测试策略 (ITS) 和文献数据.
- 使用人类胚胎干细胞 (ESC) 进行实验评估,以评估MNP吸收,胚胎层分化效应和尺寸依赖的细胞毒性.
- 综合独立文献发现以加强基于AOP的危险评估.
主要成果:
- 人类胚胎干细胞 (ESC) 实验提供了聚烯MNP吸收,分化效应和细胞毒性的数据.
- IATA的方法整合了实验和文献数据,提高了危险评估的证据权重.
- 通过对ESC结果与现有的毒理学数据进行对比,证明了预测能力.
结论:
- 国际航空运输协会的框架提供了一个结构化,基于机制的方法来评估多国航班的发展风险.
- 基于ESC的测试与文献数据相结合,支持对非动物测试策略的监管应用.
- 这项研究有助于对新出现的环境污染物进行人类相关的毒性评估.
更多相关视频
09:02Protocol for the Differentiation of Human Induced Pluripotent Stem Cells into Mixed Cultures of Neurons and Glia for Neurotoxicity Testing
Published on: June 9, 2017
23.4K
08:11Ecotoxicological Effects of Microplastics on Bird Embryo Development by Hatching without Eggshell
Published on: August 14, 2021
4.6K
相关概念视频
Toxicity Testing in Animals
Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...
Microbial Bioremediation of Plastics
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
