MRI Development of a fast P3D-STED Microscope

快速 P3D-STED 显微镜的 MRI 开发

• 批准号: 1337573
• 负责人: Emily Gibson
• 金额: $ 105万
• 依托单位: University of Colorado at Denver-Downtown Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1337573&HistoricalAwards=false
• 关键词: MRI; Development; fast; P3D; STED

Title: MRI Development of a FAST P3D-STED MicroscopeAn NSF MRI Development Grant award is made to a collaborative team of physicists, engineers, and neuroscientists at the University of Colorado Denver to further develop the capabilities of Stimulated Emission Depletion (STED) microscopy. The goal of the project is to develop a FAST P3D-STED microscope (fast acquisition, photoactivation, 3-dimensional enhanced resolution STED microscope). Historically, light microscopy has been limited in its resolution by the Diffraction Barrier - a fundamental physical limit due to the property of photons of spreading out when they pass by an edge, such as the aperture in a microscope. In the past decade, several methods have emerged that can "break" the diffraction barrier, causing a revolution in the field of biological imaging and opening a major window of opportunity for studies that heretofore have been impossible. STimulated Emission Depletion (STED) microscopy, invented by Stefan Hell, is one such super-resolution technique, allowing fluorescence imaging at resolutions of tens of nanometers. With continuing improvements in the technology, STED is now able to be utilized with a wide range of fluorescent dyes and genetically encoded fluorophores and has advantages for fast, live cell, and in vivo imaging. The investigators will further push the current capabilities of STED microscopy by developing a new STED microscope to allow high speed, sub-diffraction limit imaging combined with photoactivation capabilities. This microscope will allow researchers to not only observe small objects with sub-diffraction resolution, but also enable control of dynamic processes and observation in real time.The projects enabled by the instrument include studies of the dynamic organization of protein complexes in synapses upon control of neural plasticity, studies of the molecular-level mechanisms of odor transduction by direct stimulation of the transduction pathway, and methods for writing/reading bits at sub-diffraction dimensions in high density data storage materials. The potential societal impacts of this research include improved treatment of neurological disorders and advances in information handling and storage. The FAST P3D STED microscope will be housed in the Advanced Light Microscopy Core (ALMC) facility at the University of Colorado Denver, a successful shared user facility that has personnel and resources to train new users and operate and maintain the instrument. Researchers, postdoctoral trainees, and students from a variety of science and engineering departments at the University of Colorado Denver, University of Colorado Boulder and other universities will be able to utilize the microscope for their research. Outreach to new users will be accomplished through seminars put on by the ALMC and research presentations at scientific meetings. The investigators are particularly committed to promoting student training and advancing participation of under-represented minorities in science as evidenced by their involvement in the Building Research Achievement in Neuroscience (BRAiN) program, a summer program designed to help meet the challenge to reduce the Neuroscience research participation gap by preparing diverse undergraduates in the Rocky Mountain and Southwest Region for successful entry to Neuroscience Ph.D. programs. The capability of the STED microscope to see the inner workings of cells at unprecedented resolution captures the imagination of these future scientists.

标题：FAST P3D-STED 显微镜的 MRI 开发 NSF MRI 开发补助金授予科罗拉多大学丹佛分校的物理学家、工程师和神经科学家合作团队，以进一步开发受激发射损耗 (STED) 显微镜的功能。该项目的目标是开发一款 FAST P3D-STED 显微镜（快速采集、光激活、3 维增强分辨率 STED 显微镜）。 从历史上看，光学显微镜的分辨率受到衍射势垒的限制，这是一种基本的物理限制，因为光子经过边缘（例如显微镜中的光圈）时会扩散。在过去的十年中，出现了几种可以“打破”衍射屏障的方法，引发了生物成像领域的一场革命，并为迄今为止不可能的研究打开了一个重要的机会之窗。 Stefan Hell 发明的 STimulated Emission Depletion (STED) 显微镜就是这样一种超分辨率技术，可以实现数十纳米分辨率的荧光成像。随着技术的不断改进，STED 现在能够与多种荧光染料和基因编码荧光团一起使用，并具有快速、活细胞和体内成像的优势。研究人员将通过开发一种新型 STED 显微镜来进一步推动 STED 显微镜的当前功能，以实现高速、亚衍射极限成像与光激活功能相结合。该显微镜不仅可以让研究人员以亚衍射分辨率观察小物体，还可以实时控制动态过程和观察。该仪器支持的项目包括研究突触中蛋白质复合物的动态组织。神经可塑性，通过直接刺激转导途径研究气味转导的分子水平机制，以及在高密度数据存储材料中以亚衍射维度写入/读取位的方法。这项研究的潜在社会影响包括改善神经系统疾病的治疗以及信息处理和存储方面的进步。 FAST P3D STED 显微镜将安装在科罗拉多大学丹佛分校的高级光学显微镜核心 (ALMC) 设施中，这是一个成功的共享用户设施，拥有培训新用户以及操作和维护仪器的人员和资源。 科罗拉多大学丹佛分校、科罗拉多大学博尔德分校和其他大学各个科学和工程系的研究人员、博士后实习生以及学生将能够利用该显微镜进行研究。新用户的推广将通过 ALMC 举办的研讨会和科学会议上的研究报告来完成。 研究人员特别致力于促进学生培训和促进代表性不足的少数群体对科学的参与，他们参与的神经科学研究成就计划 (BRAiN) 就证明了这一点，该计划是一个夏季计划，旨在帮助应对减少神经科学研究的挑战通过为落基山和西南地区的不同本科生成功进入神经科学博士学位做好准备，参与差距程序。 STED 显微镜能够以前所未有的分辨率观察细胞的内部运作，这激发了这些未来科学家的想象力。