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聚乙乙磨损颗粒诱导人类单细胞细胞系中的炎症性表型

Shannon Jamieson^1,2, Philip Hyde², Patrick Card³

¹Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom.

Frontiers in bioengineering and biotechnology

|August 21, 2025

概括

聚乙乙 (PEEK) 颗粒会在人类巨细胞中引发炎症,独立于托尔类受体4 (TLR4). PEEK 颗粒诱导反应性氧物种 (ROS) 并激活炎症体,这表明一种类似 PAMP 的免疫反应.

科学领域:

生物材料科学
免疫学
细胞生物学

背景情况:

聚乙乙 (PEEK) 在医疗植入物中广泛使用.
了解对PEEK颗粒的免疫反应对于临床安全至关重要.
之前的研究表明PEEK可能引起炎症反应.

研究的目的:

研究人类单细胞细胞系中聚乙乙 (PEEK) 颗粒的促炎潜力.
确定类似收费受体4 (TLR4) 和反应性氧物种 (ROS) 在PEEK诱导的免疫反应中的作用.
评估PEEK颗粒暴露后的炎症激活.

主要方法:

将PEEK颗粒应用到THP-1巨细胞中.
分析了炎症标志物的基因表达和蛋白质分泌.
使用CLI-095抑制了托尔类受体4 (TLR4).
测量了活性氧物种 (ROS) 的产生和炎症酶激活 (IL- 1β分泌).

主要成果:

导致IL-8,CCL2,CCL3和CCL4基因表达和蛋白质分泌的显著增加.
这些促炎反应并不依赖于TLR4的激活.
暴露于PEEK颗粒导致ROS产量大幅上调.
在接受PEEK治疗的细胞中观察到由IL- 1β分泌量增加表明的炎症酶激活.

结论:

在人类巨细胞中,PEEK 颗粒诱导了一种独立于 TLR4 的炎症性表型.
PEEK 颗粒具有类似 PAMP 的特性,刺激 ROS 生产和炎症酶激活.
这些发现突显了PEEK的免疫调节作用和引起炎症反应的潜力.

关键词:

化学物质免疫反应免疫学巨细胞骨关节炎

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