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凝来源的碳量子点与模型球状蛋白的表面相互作用:对基于碳的纳米材料和生物系统的洞察
Shima Masoudi Asil1, Mahesh Narayan2
1The Department of Environmental Science & Engineering, The University of Texas at El Paso El Paso TX 79968 USA.
Nanoscale advances
|January 6, 2025
概括
来自凝的碳量子点 (CQD) 改变了牛奶蛋白的结构和功能,影响了它结合视网醇的能力. 尽管如此,神经母细胞瘤细胞显示出高活力,表明这些碳纳米材料的特定生物分子效应.
科学领域:
- 纳米材料科学 科学 纳米材料科学
- 生物化学 生化学
- 蛋白质科学 蛋白质科学
背景情况:
- 碳纳米材料 (CNM) 越来越多地用于生物医学应用.
- 了解CNM与生物分子的相互作用对于安全性和有效性至关重要.
- CNM对蛋白质结构和功能的影响仍未得到充分研究.
研究的目的:
- 调查碳量子点 (CQD) 对球状牛奶蛋白β-乳糖球蛋白 (BLG) 的影响.
- 评估CQD-BLG相互作用的结构和功能后果.
- 在细胞环境中评估CQDs的生物相容性.
主要方法:
- 里埃变换红外光谱 (FTIR) 用于分析蛋白质的二级和三级结构.
- 在CQD暴露时BLG与视网醇的相互作用的评估.
- 使用神经母细胞瘤细胞进行细胞毒性测定.
主要成果:
- CQD引发了BLG的二级和三级结构的显著变化,包括螺旋和β-sheet内容的变化.
- 暴露于CQD干扰了BLG和视网醇之间的相互作用,可能会损害连接体运输.
- 神经母细胞瘤细胞在暴露于CQD时表现出高活力,这表明特定的生物分子相互作用而不是一般毒性.
结论:
- 来自凝的CQD可以诱导像BLG这样的球状蛋白质的异常分子和功能变化.
- 这些相互作用可能会对蛋白质功能产生影响,例如连接体结合和运输.
- 需要进一步的研究来了解CNM-生物分子相互作用在原子和分子层面的系统后果.
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