折射指数形态成像显微镜系统利用极化复杂化为无标签单个活细胞.
Huijun Wang1,2, Lu Zhang1,2, Chen Fan1,2
1State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
ACS sensors
|December 9, 2024
概括
一个新的显微镜系统 (RIMIM) 可以快速分离细胞折射率和形态,而无需标签. 这一突破有助于通过分析活细胞结构和内部物质来检测癌症等疾病.
科学领域:
- 生物物理学的生物物理.
- 细胞生物学 细胞生物学
- 在光学成像系统中,光学成像
背景情况:
- 对细胞内部物质和形态的无标签检测对于诊断疾病至关重要.
- 目前解脱折射率 (RI) 和形态学的方法复杂且缓慢.
- 需要简单,快速的技术来分析活细胞特征.
研究的目的:
- 引入一种新的折射率形态成像显微镜 (RIMIM) 系统.
- 为了实现细胞内折射率分布 (IRID) 和细胞形态的同时,无标签的脱.
- 为了证明系统在细胞病理学检测中的实用性.
主要方法:
- 采用极化复杂化,同时实现循环极化度 (DOCP) 和非干涉度量化相位成像 (QPI).
- 采用循环去极化衰变模型 (CDDM) 来从光学厚度和DOCP数据中检索IRID.
- 使用获取的IRID从相位结果中脱离细胞厚度.
主要成果:
- 在小鼠森林胃癌 (MFC) 和人类-2 (HK-2) 细胞中成功检索了IRID和分离细形态.
- 已证明有效检测膜损伤和形态变化的ferroptotic HK-2细胞.
- 观察到与正常细胞相比,受损细胞的表面折叠测量显著增加.
结论:
- RIMIM系统提供了一种简单快速的方法,可以在活细胞中无标签地将RI与形态脱.
- 这种技术显示了促进细胞病理学和疾病检测的巨大潜力.
- RIMIM系统为实时分析细胞健康和疾病状态提供了宝贵的工具.
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