扩展显微镜使用单个子分子用于蛋白质和RNAs的高产量多重成像
Yi Cui1,2, Gaojie Yang1,2, Daniel R Goodwin1,2
1McGovern Institute, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts, United States of America.
PloS one
|September 20, 2023
概括
一个新的多功能器简化了扩展显微镜 (ExM),使得蛋白质和RNA的纳米尺度成像成为可能. 这种具有成本效益的联合ExM (uniExM) 协议增强了癌症组织的可视化.
科学领域:
- 生物技术是生物技术.
- 显微镜的使用方法
- 分子生物学分子生物学
背景情况:
- 扩展显微镜 (ExM) 通过物理扩大样本,使用标准光显微镜进行纳米尺度成像.
- 目前的ExM方法需要不同分子的特定定部分,使协议复杂化并增加成本.
- 有效地定各种生物分子,包括RNA,对于推进ExM应用至关重要.
研究的目的:
- 开发一种多功能定试剂,以简化和降低ExM协议的成本.
- 为了使蛋白质和RNAs在单个实验步骤中同时定.
- 证明新方法对细胞和组织的多式纳米分析的实用性.
主要方法:
- 引入了一种新型的多功能,一种烯酸氧化物,用于配备蛋白质和RNA.
- 实施一个统一的ExM (uniExM) 协议,使用烯酸环氧化.
- uniExM的应用,用于保存和可视化各种生物样本中的RNA转录和蛋白质.
主要成果:
- 烯酸环氧化成功地在一个步骤中装备了蛋白质和RNA.
- 与以前的RNA定策略相比,uniExM协议显示了显著的成本降低 (2-10倍).
- uniExM有效地保存和可视化了患者衍生的异种移植 (PDX) 癌症组织中的RNA转录和蛋白质.
结论:
- 开发的多功能和uniExM协议为ExM提供了一种简化且具有成本效益的方法.
- uniExM促进了RNA和蛋白质的纳米尺度可视化,扩大了ExM的适用性.
- 这种方法在多种细胞和组织研究,包括癌症诊断中的多式纳米分析中具有前景.
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