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在近红外 II 窗口中的成像
Danyang Xu1,2, Zhisheng Wu1, Hui Yang3
1Department of Electrical and Electronic Engineering, The University of Hong Kong, Kowloon, Hong Kong SAR 999077, China.
Journal of the American Chemical Society
|December 24, 2025
概括
研究人员开发了一种使用细菌蛋白的新近红外II (NIR-II) 成像技术. 这种方法可以对活哺乳动物的离子 (Ca2+) 动态进行高灵敏度,深层组织成像,有助于瘤治疗评估.
科学领域:
- 生物医学光学
- 分子成像
- 生物技术
背景情况:
- 在活哺乳动物的深层组织中,传统的离子 (Ca2+) 成像被可见波长 (400-750 nm) 的光散射所限制.
- 高灵敏度和分辨率对于非侵入性成像,特别是对动态生物过程和治疗反应的监测至关重要.
研究的目的:
- 开发一种新的近红外II (NIR-II) 窗口成像技术,用于活哺乳动物的非侵入性深层组织成像.
- 为了在NIR-II频谱 (>1000 nm) 中探索来自*Thermochromatium tepidum*的天然蛋白质,以提高Ca2+指标特性.
- 证明这种NIR-IICa2+成像用于纵向评估瘤治疗疗效.
主要方法:
- 探索和描述一种新型,高度光稳定的光蛋白,来源于热色.
- 在培养的哺乳动物细胞中利用蛋白质进行细胞内Ca2+成像,将灵敏度与可见的Ca2+指标进行比较.
- 在活哺乳动物的完整瘤中进行NIR- II Ca2+成像,以监测对不同治疗策略的反应.
主要成果:
- 开发的细菌蛋白质能够对哺乳动物细胞内的细胞内Ca2+反应进行敏感的NIR-II成像.
- 在使用NIR-II波长的瘤中实现了高灵敏度,高分辨率和高对比度的体成像.
- 通过非侵入性深层组织Ca2+成像显示了长度评估瘤治疗疗效的潜力.
结论:
- 一种新型的NIR-II光蛋白能够在1000nm以上进行高级深层组织成像.
- 这项技术为生物过程和活哺乳动物治疗反应的非侵入性监测提供了有希望的途径.
- 在各种生物医学应用中对治疗疗效进行纵向评估.
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