不同颗粒大小的聚乙烯纳米塑料调节了促炎性巨细胞的两极分化
Wanlan Jiang1, Yilin Liu2, Yuqi Wu3
1Department of Rheumatology and Immunology, The First People's Hospital of Changzhou (The Third Affiliated Hospital of Soochow University), Changzhou, 213003, China.
Scientific reports
|July 15, 2024
概括
在50μg/mL的聚烯纳米塑料 (NP) 诱导M1巨细胞两极分化,影响免疫反应. 这项研究提供了对NP健康影响和饮食建议的见解,特别是对于那些有炎症状况的人.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 免疫学 免疫学 免疫学
背景情况:
- 微塑料 (MP) 和纳米塑料 (NP) 是无处不在的环境污染物.
- 人们越来越担心它们对健康的潜在不良影响.
- 对于NP对巨细胞两极分化的影响,这是一个关键的免疫过程,尚未得到充分理解.
研究的目的:
- 研究聚乙烯纳米塑料 (PS-NP) 对巨细胞极化的影响.
- 为了确定NP大小 (50nm和500nm) 和度对巨细胞表型的影响.
主要方法:
- 使用小鼠RAW264.7巨细胞系模型.
- 暴露巨细胞在50nm和500nmPS-NP的不同度下.
- 评估了巨细胞极化标志物 (CD86,iNOS,M1的TNF-α;M2的aCD206,IL-10,Arg-1).这些标志物包括:
主要成果:
- 巨细胞有效地摄入了50nm和500nm的PS-NP.
- 一个50μg/mL的PS-NP度显著上调M1标记物 (CD86,iNOS,TNF-α).
- 同一个度显著降低了M2标记物 (aCD206,IL-10,Arg-1),表明M1极化.
结论:
- 在50μg/mL的聚烯纳米塑料诱导M1巨细胞极化.
- 这项研究提供了NP毒性的潜在机制的证据.
- 这些发现支持饮食和环境建议,特别是对于自身免疫/自身炎症性疾病患者.
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