聚乙烯四甲酸纳米塑料 (PET) 对纤维细胞的影响:对NIH-3T3细胞的研究
Maria Elena Giordano1, Francesca Lionetto2, Maria Giulia Lionetto1,3
1Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy.
Frontiers in physiology
|June 24, 2025
概括
聚乙烯二甲酸纳米塑料 (NP) 损害纤维细胞迁移和伤口愈合. 暴露会诱导氧化应激,影响组织修复,突出塑料污染带来的健康风险.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
背景情况:
- 塑料污染,特别是纳米塑料 (NP),造成了严重的环境和公共卫生问题.
- 聚乙烯二甲酸 (PET) NP是普遍存在的,它们与生物系统的相互作用需要研究.
- 纤维细胞对于伤口愈合和组织再生至关重要,这使得它们成为NP影响研究的相关模型.
研究的目的:
- 研究环境相关的PETNP对小鼠NIH-3T3纤维细胞的影响.
- 评估PETNP对纤维细胞活力,迁移和潜在细胞机制的影响.
- 了解PETNP与纤维细胞细胞之间的相互作用.
主要方法:
- 使用自发光,环保现实的PETNP,通过自上而下的方法生产.
- 确定PETNP和培养基的汉森溶解性参数 (HSP).
- 评估了NP内部化,细胞活力 (MTT试验) 和细胞迁移 (scratch试验).
- 测量反应性氧物种 (ROS) 生产以评估氧化应激.
主要成果:
- 聚乙烯NP被纤维细胞以剂量依赖的方式内化,在细胞质中积累.
- 在24小时暴露后,在10-100微克/毫升时观察到细胞活力的轻微减少 (<20%的抑制).
- 观察到纤维细胞迁移的显著损害,表明可能会干扰组织修复.
- 剂量依赖的ROS产量的增加建议诱导细胞内氧化应激.
结论:
- PET纳米塑料损害纤维细胞迁移,并可能干扰组织修复过程.
- 由PETNP引起的氧化应激可能是它们对纤维细胞的不良影响的关键机制.
- 需要进一步的研究,以充分了解与PET纳米塑料暴露相关的细胞影响和风险.
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