Laserscanning Mikroscope

激光扫描显微镜

• 批准号: 442216850
• 金额: --
• 依托单位: Christian-Albrechts-Universität zu Kiel
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/442216850?language=en
• 关键词: Laserscanning; Mikroscope

A confocal high resolution microscope system is required for spatial separation of molecular structures and for the rapid detection of multiple fluorescence staining signals. It is planned that this microscope system will be used by members of the Biochemical Institute, the Institute of Pharmacy, Institute of Physiology, Institute of Anatomy and members of the collaborative research center 877 (SFB877) of the University Kiel. In the framework of the CRC877 the system will be part of the central microscopy service platform. For live cell imaging an inverse microscope system with a chamber is needed allowing temperature regulation and continous gas supply. The microscope system is planned for fixed cells, tissue samples and living cells. For the detection of dymanic processes of cell communication it is required to detect different fluorescence signals simultanously and with a sufficient speed of recording. A very high resolution and a rapid detection mode is necessary allowing a minumum of sample loss due to low laser intensities. For this purpose a high pixel dwell time to image even very weak signals with high sensitivity and low signal/noice ratio in the live cell modus has to be applied. The microscope should allow convocal imaging to detect multicolor fluorescence signals in a precise spatial and non overlapping mode. The optical resolution of the system should be able to process and image very tiny intracellular and extracellular structures, the composition of microenviroments, colocalisation and interaction of fluorecent proteins (FRET). This requires a sensitive detection methodology combined with mathematical applications to analyse signals and images (e.g. deconvolution) to optimize the signal/noice ratio and signal quality, respectively. To image multiple data points, multiple cells and tissue areas with sufficient detail and in a reproducible way over longer periods a motorized scanning table is needed. The wavelengths for the detection of the emission should be individually determined and called up again at any time. For the differentiation of signals of multilabelling the emission requires detailed spectral analysis. In addition moduls for interaction studies, FRAP, photo activation and the localisation of markers for physiological studies using sensitive fluorescent biosensors are required by different users. To monitor dynamic processes in a live cell modus a fast scanning system to detect in parallel different markers is required.

一个共聚焦高分辨率显微镜系统是必要的空间分离的分子结构和快速检测的多个荧光染色信号。计划该显微镜系统将由生物化学研究所，药学研究所，生理学研究所，解剖学研究所的成员和基尔大学合作研究中心877（SFB 877）的成员使用。在CRC 877的框架内，该系统将成为中央显微镜服务平台的一部分。对于活细胞成像，需要具有腔室的倒置显微镜系统，其允许温度调节和连续气体供应。显微镜系统计划用于固定细胞、组织样品和活细胞。为了检测细胞通讯的动态过程，需要以足够的记录速度准确地检测不同的荧光信号。一个非常高的分辨率和快速的检测模式是必要的，允许最小的样品损失，由于低激光强度。为此目的，必须应用高像素停留时间以在活细胞模式中以高灵敏度和低信噪比成像甚至非常弱的信号。显微镜应允许convocal成像，以精确的空间和非重叠模式检测荧光信号。该系统的光学分辨率应该能够处理和成像非常微小的细胞内和细胞外结构，微环境的组成，共定位和荧光蛋白（FRET）的相互作用。这需要灵敏的检测方法与数学应用相结合，以分析信号和图像（例如，去卷积），从而分别优化信号/噪声比和信号质量。为了对多个数据点、多个细胞和组织区域进行足够详细的成像，并且在较长时间内以可再现的方式进行成像，需要电动扫描台。应单独确定用于检测发射的波长，并随时再次调用。为了区分多标记的信号，需要对发射进行详细的光谱分析。此外，不同用户还需要用于相互作用研究、FRAP、光激活和使用敏感荧光生物传感器进行生理学研究的标记定位的模块。为了监测活细胞模式中的动态过程，需要快速扫描系统来并行检测不同的标记物。