氧化纳米颗粒到溶解体的定位导致JEG-3细胞的溶解体功能障碍
Jundai Kobayashi1, Kazuma Higashisaka2, Mizuki Muranaka3
1Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan.
Biochemical and biophysical research communications
|August 7, 2024
概括
怀孕期间暴露于纳米颗粒 (nSP10) 可能会损害胎盘细胞. 这些纳米粒子积聚在溶解体中,可能导致功能障碍和胎盘毒性.
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:
- 纳米颗粒由于其高表面积而具有独特的特性,导致工业应用.
- 母亲暴露于纳米粒子是常见的,但胎盘毒性数据仍然有限.
- 之前的研究表明,纳米颗粒的潜在胎盘毒性.
研究的目的:
- 在胎盘细胞内研究二氧化纳米颗粒 (nSP10) 的细胞内行为.
- 阐明nSP10在胎盘细胞中吸收和局部化的机制.
- 了解nSP10如何影响胎盘细胞功能.
主要方法:
- 使用了JEG-3细胞,一种人类胆管癌细胞系.
- 分析nSP10吸收使用流细胞计与光标记纳米粒子.
- 采用共聚焦显微镜和LysoTracker染色来确定细胞内局部化和溶酶体效应.
主要成果:
- 通过内细胞化,nSP10被有效地内化到JEG-3细胞中.
- 同焦点显微镜证实了nSP10在溶解体内突出的局部化.
- nSP10治疗导致溶酶体的酸度增加和胀,表明了溶酶体功能障碍.
结论:
- 纳米颗粒通过内分细胞分裂被胎盘细胞吸收.
- 在溶解体中积聚nSP10可能会破坏溶解体功能.
- 由nSP10诱导的溶酶体功能障碍可能导致观察到的胎盘毒性.
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