...
首页> 外文期刊>Biomaterials >In vivo real-time visualization of tissue blood flow and angiogenesis using Ag2S quantum dots in the NIR-II window
【24h】

In vivo real-time visualization of tissue blood flow and angiogenesis using Ag2S quantum dots in the NIR-II window

机译:在NIR-II窗口中使用Ag2S量子点对组织血流和血管生成进行体内实时可视化

获取原文
获取原文并翻译 | 示例
           

摘要

Improving the tissue penetration depth and spatial resolution of fluorescence-based optical nanoprobes remains a grand challenge for their practical applications in invivo imaging, due to the scattering and absorption and endogenous autofluorescence of living tissues. Here, we present that Ag2S quantum dots (QDs), containing no toxic ions, exhibiting long circulation time and high stability, act as a new kind of fluorescent probes in the second near-infrared window (NIR-II, 1000-1350nm) which enable invivo monitoring of lymphatic drainage and vascular networks with deep tissue penetration and high spatial and temporal resolution. In addition, NIR-II fluorescence imaging with Ag2S QDs provide ultrahigh spatial resolution (~40μm) that permits us to track angiogenesis mediated by a tiny tumor (2-3mm in diameter) invivo. Our results indicate that Ag2S QDs are promising NIR-II fluorescent nanoprobes that could be useful in surgical treatments such as sentinel lymph node (SLN) dissection as well in assessment of blood supply in tissues and organs and screening of anti-angiogenic drugs.
机译:由于活组织的散射,吸收和内源性自发荧光,提高基于荧光的光学纳米探针的组织​​穿透深度和空间分辨率仍然是其在体内成像中实际应用的巨大挑战。在这里,我们提出不含毒性离子,具有长循环时间和高稳定性的Ag2S量子点(QDs)作为第二种近红外窗口(NIR-II,1000-1350nm)中的新型荧光探针,通过深层组织穿透和高时空分辨率实现对淋巴引流和血管网络的体内监测。此外,使用Ag2S QD进行NIR-II荧光成像可提供超高的空间分辨率(〜40μm),这使我们能够追踪微小肿瘤(直径2-3mm)体内介导的血管生成。我们的结果表明,Ag2S QDs是很有前途的NIR-II荧光纳米探针,可用于外科治疗,例如前哨淋巴结(SLN)解剖以及组织和器官的血液供应评估以及抗血管生成药物的筛选。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号