银纳米颗粒诱导多蛋白聚合物的形成,这些聚合物含有素,但不与纳米颗粒同位
Kaden M Thomas1, Nadja Spitzer1
1Department of Biological Sciences, Marshall University, One John Marshall Dr., Huntington, WV, USA.
概括
银纳米粒子 (AgNPs) 可以在大脑中积累. AgNP触发神经细胞中的蛋白质聚合,但纳米粒子本身不会与这些聚合物直接相互作用.
科学领域:
- 神经科学是一个神经科学.
- 纳米技术纳米技术
- 生物化学 生物化学
背景情况:
- 银纳米粒子 (AgNPs) 由于其抗微生物特性而广泛使用.
- AgNPs被释放到环境中,并且可以在大脑中生物累积.
- 了解AgNP与神经细胞的相互作用至关重要.
研究的目的:
- 研究AgNP对神经细胞生理学的影响.
- 确定AgNP如何与神经细胞中的特定蛋白质相互作用.
- 在细胞培养和处理过程中描述AgNP的光谱变化.
主要方法:
- 培养B35神经母细胞细胞暴露于AgNP.
- 免疫细胞化学检测蛋白质聚合 (cadherin,β-catenin,文库林).
- 超光谱显微镜可用于可视化AgNP和蛋白质聚合物.
主要成果:
- 在神经细胞中,AgNPs诱导了干素和β-catenin的剂量依赖聚合.
- 这些蛋白质聚合物没有与AgNPs进行同位素化.
- 温古林的表达和组织保持不变.
- 在暴露于细胞培养基和加工时,AgNP表现出光谱变化.
结论:
- AgNP激活了一个中间细胞机制,导致蛋白质聚合物的形成.
- 蛋白质聚合是由特定的蛋白质-蛋白质相互作用介导的,而不是直接的AgNP结合.
- 在生物样本准备过程中,AgNP的光谱特性发生变化,影响成像.
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