对细胞内结构的纳米内镜AFM成像对细胞增殖和应激反应的影响
Mohammad Mubarak Hosain1, Mohammad Shahidul Alam1, Takehiko Ichikawa2
1Division of Nano Life Science, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan. fukuma@staff.kanazawa-u.ac.jp.
Nanoscale
|September 22, 2025
概括
纳米内镜原子力显微镜 (NE-AFM) 允许细胞成像,但可能会影响细胞功能. 这项研究发现,NE-AFM对细胞增殖和反应的影响最小,为精确的纳米动力学研究创造了条件.
科学领域:
- 细胞和分子生物学 细胞和分子生物学
- 纳米技术纳米技术
- 生物物理学的生物物理.
背景情况:
- 纳米内镜原子力显微镜 (NE-AFM) 能够直接可视化细胞内纳米动力学.
- 人们对NE-AFM对细胞活力和功能的潜在影响存在担忧,原因是重复插入尖端和扫描.
- 之前使用度测定方法的研究没有显示致命的细胞损伤,但功能性影响仍然很大程度上没有特征.
研究的目的:
- 研究2D和3DNE-AFM成像对关键细胞功能的影响:增殖和应激反应.
- 为了确定NE-AFM成像条件是否可以优化以最大限度地减少细胞影响.
- 为在细胞功能背景下解释NE-AFM数据提供指导方针.
主要方法:
- 在标准的2D和3DNE-AFM成像条件下对细胞增殖率的比较分析.
- 在2D和3DNE-AFM扫描期间使用光指示器监测细胞内水平.
- 不同的扫描尺寸和成像持续时间,以评估对细胞反应的剂量依赖性影响.
主要成果:
- 标准的2D和3DNE-AFM成像条件没有显著改变细胞分裂间隔.
- 扫描尺寸小于1微米的2D NE-AFM成像诱导了最小的反应.
- 3D NE-AFM成像最初触发了短暂的反应,大约在15分钟内正常化.
结论:
- 在优化的条件下,NE-AFM成像对细胞增殖和对平衡的短暂影响的影响最小.
- 这些发现支持使用NE-AFM来研究细胞内纳米动力学,而不会造成显著的功能障碍.
- 建立能够保持细胞功能的成像参数对于准确解释NE-AFM结果至关重要.
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