胰岛素和人血清白蛋白与核心外Fe3O4@SiO2的相互作用纳米颗粒功能化与Carboranes
Katarzyna Ludzik1, Monika Marcinkowska2, Barbara Klajnert-Maculewicz2
1Department of Physical Chemistry, University of Lodz, Lodz 90-236, Poland.
The journal of physical chemistry. B
|June 28, 2025
概括
这项研究揭示了功能纳米颗粒如何与人血清白蛋白和胰岛素相互作用,导致显著的结构变化. 了解这些蛋白质-纳米粒子相互作用是开发新医疗应用的关键.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 蛋白质化学 蛋白质化学
背景情况:
- 纳米粒子 (NP) 与生物介质中的蛋白质相互作用,改变蛋白质的结构和功能.
- 了解蛋白质-纳米粒子相互作用对于功能性NP的医学应用至关重要.
- 中子捕获疗法 (BNCT) 使用向纳米粒子.
研究的目的:
- 研究特定功能纳米颗粒与人血清白蛋白 (HSA) 和胰岛素之间的相互作用.
- 描述蛋白质在纳米颗粒上吸附时的结构变化.
- 为了确定蛋白质-纳米粒子相互作用的结合亲和力和性质.
主要方法:
- 频谱光度测量 (Spectrofluorometry) 是一种测量方法.
- 循环二重化 (CD) 光谱学 循环二重化 (CD) 光谱学
- 异热定位热量计 (ITC) 是一种热量计.
主要成果:
- 蛋白质对纳米颗粒的吸附是一种由和驱动的过程,导致显著的结构变化.
- 在HSA中,α-螺旋的含量大幅减少 (从87.59%降至40.9%),β-片和随机线圈结构增加.
- 与HSA相比,胰岛素与纳米颗粒的相互作用较弱,阿尔法螺旋含量下降15%.
结论:
- 功能纳米粒子诱导HSA和胰岛素的显著构造变化.
- HSA对纳米颗粒的结合亲和力比胰岛素更强.
- 这些发现为针对性医学疗法 (如BNCT) 的蛋白质-纳米粒子相互作用提供了洞察力.
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