Centimeter-Deep NIR-II Fluorescence Imaging with Nontoxic AIE Probes in Nonhuman Primates.

Centimeter-Deep NIR-II Fluorescence Imaging with Nontoxic AIE Probes in Nonhuman Primates.
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使用无毒 AIE 探针对非人灵长类动物进行厘米深 NIR-II 荧光成像

DOI:
10.34133/2020/4074593
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发表时间:
2020
期刊:
Research (Washington, D.C.)
影响因子:
--
通讯作者:
Tang BZ
Tang BZ
中科院分区:
其他
文献类型:
--
作者:
Sheng Z;Li Y;Hu D;Min T;Gao D;Ni JS;Zhang P;Wang Y;Liu X;Li K;Zheng H;Tang BZ

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具有聚集诱导发射(AIE)特性的荧光探针在具有上级空间和时间分辨率的生物医学成像中具有重要意义。然而,在非人灵长类动物中缺乏毒性研究和深层组织成像阻碍了它们的临床转化。在这里,我们报告的血液化学和组织学分析,在非人灵长类动物治疗AIE探针超过10倍的静脉注射剂量的临床使用的吲哚菁绿色(ICG)在36天的研究期间,证明AIE探针是无毒的。此外,通过明亮无毒的AIE探针和第二窗口(NIR-II,1,000 - 1,700 nm)的荧光成像,我们在非人类灵长类动物中实现了前所未有的1.5厘米深血管成像,打破了目前毫米深NIR-II荧光成像的限制。我们的重要发现,即,AIE探针的无毒特征和非人灵长类动物中厘米深的NIR-II血管成像,可能有助于AIE探针在临床试验中的成功翻译。
Fluorescence probes with aggregation-induced emission (AIE) characteristics are of great importance in biomedical imaging with superior spatial and temporal resolution. However, the lack of toxicity studies and deep tissue imaging in nonhuman primates hinders their clinical translation. Here, we report the blood chemistry and histological analysis in nonhuman primates treated with AIE probes over tenfold of an intravenous dose of clinically used indocyanine green (ICG) during a study period of 36 days to demonstrate AIE probes are nontoxic. Furthermore, through bright and nontoxic AIE probes and fluorescence imaging in the second window (NIR-II, 1,000–1,700 nm), we achieve an unprecedented 1.5-centimeter-deep vascular imaging in nonhuman primates, breaking the current limitation of millimeter-deep NIR-II fluorescence imaging. Our important findings, i.e., nontoxic features of AIE probes and centimeter-deep NIR-II vascular imaging in nonhuman primates, may facilitate successful translation of AIE probes in clinical trials.
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