散射启用的经定量相成像揭示了有机体和深层小鼠大脑中的亚细胞细节
bioRxiv : the preprint server for biology
|February 6, 2026
概括
散射激活的经定量相成像 (SEEQPI) 克服了深层组织成像的光散射限制. 这种无标签的方法在生物系统中实现了亚细胞分辨率和纳米阶段灵敏度.
科学领域:
- 生物医学光学 生物医学光学
- 先进的成像技术,以及先进的成像技术.
- 细胞生物学 细胞生物学
背景情况:
- 生物组织中的光散射限制了深度成像,阻碍了亚细胞分辨率和定量分析.
- 目前的方法很难解决厚厚的,的组织中的动态微环境.
- 需要具有高空间和时间分辨率的无标签成像技术,用于询问生物系统.
研究的目的:
- 引入启用散射的经定量相成像 (SEEQPI) 作为一种新的无标签成像模式.
- 展示SEEQPI在亚细胞分辨率和深层组织透方面的能力.
- 允许在完整的生物系统中进行细胞动态的定量,纵向研究.
主要方法:
- 开发了SEEQPI,使用近红外照明的共同路径相位转移共聚焦干扰度.
- 采用了启用散射的相重建算法来利用组织散射.
- 集成的SEEQPI与第三子生成和三光子光显微镜用于多式成像.
主要成果:
- 实现了亚细胞空间分辨率和纳米尺度的空间时相灵敏度.
- 在小鼠大脑中展示了毫米尺度的成像深度.
- 在肝癌球状体和*in vivo*小鼠大脑中,成功成像了用其他显微镜技术化的亚细胞结构.
- 启用了低照明功率的高速成像,最大限度地减少了光毒性.
结论:
- 在深层组织成像中,SEEQPI克服了光散射的基本限制.
- 该方法在亚细胞分辨率下提供无标签的定量相位对比.
- SEEQPI促进了对生物系统中干质动态的纵向研究,为研究开辟了新的途径.
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