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Second Near‐Infrared Absorbing Agents for Photoacoustic Imaging and Photothermal Therapy
Small Methods ( IF 10.7 ) Pub Date : 2019-09-17 , DOI: 10.1002/smtd.201900553
Yan Lyu 1 , Jingchao Li 1 , Kanyi Pu 1
Affiliation  

Photoacoustic (PA) imaging and photothermal therapy (PTT) provide useful tools for diagnosis and treatments of diseases. However, current applications of PA imaging and PTT are greatly limited by their relying on light source in the first near‐infrared (NIR) window (NIR‐I, 750–1000 nm), which shows shallow tissue penetration depth. Recently, this predicament is addressed by the use of second NIR (NIR‐II) light ranging from 1000 to 1700 nm due to reduced light–tissue interaction and increased allowable power density for light irradiation. Since a few endogenous biomolecules can absorb or emit NIR‐II light, it is necessary to develop contrast and therapeutic agents used for PA imaging and PTT in the NIR‐II window. This review summarizes the recent progresses of NIR‐II absorbing optical agents for PA imaging and PTT in living animal models. The prominent performance of NIR‐II PA imaging and NIR‐II PTT is first introduced with the use of optical agents, followed by discussion of the applications of NIR‐II PTT under the guidance of NIR‐I or NIR‐II PA imaging. At last, challenges and perspectives of NIR‐II absorbing optical agents for PA imaging and PTT are proposed.

中文翻译:

第二种近红外吸收剂,用于光声成像和光热疗法

光声(PA)成像和光热疗法(PTT)为疾病的诊断和治疗提供了有用的工具。但是,PA成像和PTT的当前应用受到第一个近红外(NIR)窗口(NIR-1,750-1000 nm)中光源的依赖,因此受到了很大的限制,该窗口显示出较浅的组织穿透深度。最近,由于减少了光与组织之间的相互作用以及增加了光辐照的允许功率密度,因此使用了1000至1700 nm范围内的第二NIR(NIR-II)光来解决这一难题。由于一些内源性生物分子可以吸收或发射NIR-II光,因此有必要在NIR-II窗口中开发用于PA成像和PTT的对比剂和治疗剂。这篇综述总结了在活体动物模型中用于PA成像和PTT的NIR-II吸收光学试剂的最新进展。首先通过使用光学试剂介绍NIR-II PA成像和NIR-II PTT的卓越性能,然后在NIR-I或NIR-II PA成像的指导下讨论NIR-II PTT的应用。最后,提出了用于PA成像和PTT的NIR-II吸收光学试剂的挑战和前景。
更新日期:2019-09-18
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