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陆军军医大学军事预防医学系军队劳动卫生学教研室/电磁辐射医学防护教育部重点实验室,重庆 400038
何旻蒂,E-mail:hemindi@tmmu.edu.cn
收稿:2025-03-26,
纸质出版:2026-02-25
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张文娟,陶嘉雯,马秦龙等.聚苯乙烯微塑料对Caco-2和IEC-6细胞的毒效应研究[J].局解手术学杂志,2026,35(02):120-126.
ZHANG Wen-juan,TAO Jia-wen,MA Qin-long,et al.Toxic effects of polystyrene microplastics on Caco-2 and IEC-6 cells[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2026,35(02):120-126.
张文娟,陶嘉雯,马秦龙等.聚苯乙烯微塑料对Caco-2和IEC-6细胞的毒效应研究[J].局解手术学杂志,2026,35(02):120-126. DOI: 10.11659/jjssx.03E025147.
ZHANG Wen-juan,TAO Jia-wen,MA Qin-long,et al.Toxic effects of polystyrene microplastics on Caco-2 and IEC-6 cells[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2026,35(02):120-126. DOI: 10.11659/jjssx.03E025147.
目的
2
观察聚苯乙烯微塑料(PS-MPs)对人结肠癌腺细胞Caco-2和大鼠小肠隐窝上皮细胞IEC-6的毒效应。
方法
2
培养Caco-2和IEC-6细胞后,荧光显微镜观察不同粒径(0.05 μm、0.50 μm)、不同浓度(0 μg/mL、10 μg/mL、20 μg/mL、40 μg/mL、80 μg/mL、160 μg/mL、320 μg/mL)的PS-MPs暴露24 h后进入细胞的情况。CCK-8法和TMA-DPH荧光膜探针检测不同粒径、不同浓度的PS-MPs暴露24 h、48 h、96 h对细胞活力和细胞膜流动性的影响。DCFH-DA荧光探针检测不同粒径、不同浓度PS-MPs暴露24 h、48 h对细胞内活性氧(ROS)水平的影响。
结果
2
0.05 μm、0.50 μm粒径的PS-MPs暴露24 h均可进入Caco-2和IEC-6细胞。0.05 μm、0.50 μm粒径的PS-MPs均可明显促进Caco-2细胞生长(
P
<
0.05),抑制IEC-6细胞生长(
P
<
0.05),显著增加Caco-2和IEC-6细胞中ROS水平(
P
<
0.05)。但实验所用粒径和浓度的PS-MPs均不影响Caco-2细胞和IEC-6细胞的细胞膜流动性。
结论
2
PS-MPs可以进入Caco-2和IEC-6细胞,通过影响细胞的活力,增加ROS水平,从而发挥其毒效应。
Objective
2
To observe the toxic effects of polystyrene microplastics (PS-MPs) on human colon cancer adenocarcinoma cells Caco-2 and rat small intestinal crypt epithelial cells IEC-6.
Methods
2
Caco-2 and IEC-6 cells were cultured and exposed to PS-MPs of two sizes (0.05 μm and 0.50 μm) at various concentrations (0 μg/mL,10 μg/mL,20 μg/mL,40 μg/mL,80 μg/mL,160 μg/mL,320 μg/mL) for 24 hours, thereby observing cellular uptake using fluorescence microscopy. Cell viability was assessed by CCK-8 assay, and cell membrane fluidity was detected by the TMA-DPH fluorescent probe after different sizes and concentrations of PS-MPs exposure for 24 hours, 48 hours and 96 hours. Intracellular reactive oxygen species (ROS) levels were detected with the DCFH-DA fluorescent probe after different sizes and concentrations of PS-MPs exposure for 24 hours, 48 hours and 96 hours.
Results
2
Both 0.05 μm and 0.5 μm PS-MPs were internalized by Caco-2 and IEC-6 cells after exposure for 24 hours. Both sizes of PS-MPs significantly promoted the growth of Caco-2 cells (
P
<
0.05), while inhibited the growth of IEC-6 cells (
P
<
0.05),and significantly increased intracellular ROS levels in Caco-2 and IEC-6 cells.However,the tested sizes and concentrations of PS-MPs showed no significant effect on the cell membrane fluidity of either Caco-2 or IEC-6 cells.
Conclusion
2
PS-MPs can be internalized by Caco-2 and IEC-6 cells, and exerts toxic effects by altering cell viability and increasing ROS levels.
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