相关实验视频
Updated: Feb 4, 2026

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从激光微解剖到空间糖组学:用高端扫描仪绘制组织糖组图的莱克微阵列协议
Patcharaporn Boottanun1,2, Sayaka Fuseya1, Atsushi Kuno1
1Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.
Methods in molecular biology (Clifton, N.J.)
|February 2, 2026
概括
激光微解剖与莱克微阵列 (LMD-LMA) 结合,精确地概述了在甲固定嵌组织中的空间糖化. 这种方法可以进行详细的组织糖体映射,以增强空间奥米克的生物解释.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 历史学 历史学 历史学
背景情况:
- 嵌入式法固定的法 (FFPE) 组织广泛可用,并保留组织架构.
- 空间糖化学需要精确地隔离微尺度组织区域.
- 激光微解剖 (LMD) 和乳素微阵列 (LMA) 是糖分分析的关键技术.
研究的目的:
- 为空间糖分分析提供LMD与LMA (LMD-LMA) 整合的详细协议.
- 为了优化LMD-LMA工作流程,使用先进的 evanescent-field光扫描仪.
- 为了使微观组织区域的精确和可复制的糖性分析.
主要方法:
- 开发了三种LMD-LMA方法:形态指导,串行截面的探针指导和从染色截面直接剖析.
- 优化工作流程,使用高端 evanescent-field光扫描仪 (GSR2300) 提高灵敏度和降低噪音.
- 标准化的LMA管道:蛋白质提取,Cy3标记,莱克-糖蛋白相互作用,光扫描和数据合格.
主要成果:
- 实现了微尺度组织区域 (厚度约0.1毫米2,5微米) 的精确糖分分析.
- 揭示了特定于组织内和组织间的糖化模式.
- 通过LM-GlycoRepo生成可共享的"组织糖体映射"数据集,并根据FAIR原则通过LM-GlycomeAtlas可视化.
结论:
- LMD-LMA提供了一个用于空间甘氨酸的插入运行协议,与现有的LMD管道兼容.
- 通过对微切割区域进行镜像,使空间转录和蛋白质组的共同注册数据集成为可能.
- 鼓励将甘氨酸信息整合到更广泛的空间奥米克工作流程中,以增强生物解释.
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