Fabrication and operation of GRIN probes for in vivo fluorescence cellular imaging of internal organs in small animals.

Fabrication and operation of GRIN probes for in vivo fluorescence cellular imaging of internal organs in small animals.
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DOI:
10.1038/nprot.2012.078
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发表时间:
2012-07-05
期刊:
影响因子:
14.8
通讯作者:
Yun, Seok Hyun
Yun, Seok Hyun
中科院分区:
生物学1区
文献类型:
--
作者:
Kim, Jun Ki;Lee, Woei Ming;Kim, Pilhan;Choi, Myunghwan;Jung, Keehoon;Kim, Seonghoon;Yun, Seok Hyun

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活体荧光显微镜已成为一种强大的技术,在体内可视化细胞过程。然而,物镜的尺寸限制了对小动物的内部器官中的各种组织部位的物理可达性。使用小直径探头,使用梯度折射率(GRIN)透镜扩展了传统活体显微镜的能力,微创内部器官成像。在该协议中,我们描述了详细的步骤,用于制造的前视图和侧视图GRIN探针和探针的集成和操作在共聚焦显微镜可视化荧光细胞和微血管在各种小鼠器官。我们进一步介绍了肾移植物中免疫细胞的纵向成像和结肠肿瘤的发展。制造和集成可以在5-7小时内完成,典型的体内成像过程需要1-2小时。
Intravital fluorescence microscopy has emerged as a powerful technique to visualize cellular processes in vivo. However, the size of the objective lenses has limited physical accessibility to various tissue sites in the internal organs of small animals. The use of small-diameter probes using graded-index (GRIN) lenses expands the capabilities of conventional intravital microscopes into minimally invasive internal organs imaging. In this protocol, we describe the detailed steps for the fabrication of front- and side-view GRIN probes and the integration and operation of the probes in a confocal microscope for visualizing fluorescent cells and microvasculature in various murine organs. We further present longitudinal imaging of immune cells in renal allografts and the tumor development in the colon. The fabrication and integration can be completed in 5–7 hours, and a typical in vivo imaging session takes 1–2 hours.
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