由合成水溶性聚合物破坏脂质膜完整性:脂质主群的影响
Jiwon Park1, Eunhye Bae2, Hee-Jin Park1
1Division of Environmental Science and Ecological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.
Environmental science & technology
|February 4, 2026
概括
负电荷的水溶性聚合物 (WSP) 破坏合成脂质膜,并导致细胞毒性,与中性或负电荷的WSP不同. 静电相互作用是理解WSP膜效应和潜在毒性的关键.
科学领域:
- 聚合物化学 聚合物化学
- 毒理学 毒理学 毒理学
- 生物物理学的生物物理.
背景情况:
- 水溶性聚合物 (WSPs) 在各种工业中广泛使用.
- 它们与生物膜的相互作用和潜在的细胞毒性尚未完全理解.
- 监管评估通常不要求WSP进行毒性测试.
研究的目的:
- 为了研究WSPs和合成脂质膜之间的相互作用.
- 评估通过膜破坏介导的WSPs的细胞毒性.
- 阐明静电相互作用在WSP膜相互作用中的作用.
主要方法:
- 使用zwitterionic (DOPC) 和 anionic (DOPG) 脂质体作为模型脂质膜.
- 通过使用充电和中性WSP进行光泄漏测试来评估膜破坏.
- 在人体 (MCF7) 和鱼类 (RTgill-W1) 细胞系上的量化 in vitro 细胞毒性.
主要成果:
- 带正电荷的WSPs诱导了阴离子DOPG脂质体中的显著膜泄漏.
- 在高度下,负电荷的WSPs会在zwitterionic DOPC脂质体中引起轻微的泄漏.
- 阴离子WSPs在两种细胞系中都表现出细胞毒性,与膜破坏相关.
结论:
- WSPs和脂质头组之间的静电相互作用决定了膜破坏.
- 带正电荷的WSPs具有更高的膜损伤和细胞毒性风险.
- 尽管有监管豁免,但仍有必要对WSP进行进一步的毒理评估.
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