从3D打印废弃物中获得的微型和纳米塑料的体外细胞转化能力
Adriana Rodríguez-Garraus1, Mari Venäläinen1, Jussi Lyyränen1
1Finnish Institute of Occupational Health, Helsinki 00250, Finland.
Ecotoxicology and environmental safety
|March 11, 2025
概括
这项研究研究了来自3D打印废物的微型和纳米塑料 (MNPLs). 虽然MNPL被细胞内化,但它们在体外没有引起癌症,但确实显示了早期的分子变化.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 材料科学 材料科学 材料科学
背景情况:
- 3D打印使用塑料聚合物,导致微型和纳米塑料 (MNPLs) 暴露问题.
- 3D打印对象的生命周期末退化会产生次要的MNPL,对其健康影响的研究有限.
- 由于潜在的癌症诱导,评估这些二次MNPLs的致癌潜力至关重要.
研究的目的:
- 评估来自3D打印物体的二次微型和纳米塑料 (MNPLs) 的体外致癌潜力.
- 调查MNPLs的影响,包括那些用碳纳米管和银纳米颗粒杂的,在细胞转化.
- 分析与MNPL暴露相关的细胞内部化和基因表达变化.
主要方法:
- 低温化被用来从3D打印的聚碳酸和聚烯纤维产生MNPLs (<5μm),其中一些被纳米材料添加.
- 采用了体外Bhas 42细胞转化试验 (CTA),对待的细胞用于评估启动和促进.
- 在MNPL治疗后,评估了七个关键基因的细胞吸收和mRNA表达.
主要成果:
- 微型和纳米塑料 (MNPLs) 被Bhas 42细胞成功地内化.
- 没有观察到任何MNPL的显著启动或促进体外细胞转化,无论使用兴奋剂.
- 在促进条件下,MNPLs改变了Prl2c3和Timp4的mRNA表达,表明了早期的分子变化.
结论:
- 从3D打印废弃物中测试的二次MNPLs在体外没有诱导形态细胞转化.
- 尽管缺乏明显的转化,但MNPLs诱导了分子变化,表明潜在的瘤发生风险.
- 需要进一步的研究,以了解退化3D打印材料的MNPLs对健康的长期影响.
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