石墨烯及其氧化物对转化生长因子β3的结构和动态特性的影响
Mingqiong Tong1, Di Zhang1, Shengqi Duan1
1College of Health and Medicine, Dezhou University, Decheng District, Dezhou 253023, China.
Langmuir : the ACS journal of surfaces and colloids
|July 21, 2025
概括
这项研究表明,氧化石墨烯 (GO) 板在吸附过程中比原始石墨烯 (PG) 板更好地保留TGF-β3蛋白质结构. 这一发现对于开发有效的基于石墨烯的药物输送系统至关重要.
科学领域:
- 材料科学与工程 材料科学与工程
- 生物物理和计算生物学
- 纳米技术和生物材料
背景情况:
- 转化生长因子β3 (TGF-β3) 是生物过程中的关键蛋白质.
- 基于石墨烯的材料为蛋白质吸附和药物输送应用提供了潜力.
- 了解蛋白质表面相互作用是设计有效生物材料的关键.
研究的目的:
- 为了研究TGF-β3蛋白在原始石墨烯 (PG) 和石墨烯氧化物 (GO) 板上的吸附行为.
- 在PG和GO表面的不同尺度上比较全球和局部吸附现象.
- 评估吸附的TGF-β3的结构稳定性及其对功能保留的影响.
主要方法:
- 使用了传统的分子动力学模拟和元动力学分子动力学模拟.
- 在超大尺度 (20 nm × 20 nm) 和小尺度 (1.2 nm × 1.6 nm) 的PG和GO板上进行了模拟.
- 分析包括吸附点偏好,界面接触和根-平均-平方波动 (RMSF) 进行构造分析.
主要成果:
- TGF-β3表现出物质依赖的吸附偏好:在PG板上选择性边缘吸附,在GO板上中央域吸附.
- 局部吸附在具有高芳香氨基酸残留密度的PG片上是最强的.
- 石墨烯氧化物板,特别是在全球吸附和特定局部系统中,保持了与原生TGF-β3相似的形状,保留了功能.
结论:
- 与原始石墨烯相比,石墨烯氧化物板在保护吸附的TGF-β3的原生形状方面表现出卓越的能力.
- 在GO板上的结构保存对于在吸附过程中维持蛋白质功能至关重要.
- 这些发现支持基于石墨烯的材料的合理设计,用于可持续的蛋白质输送平台.
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