在小鼠器官中使用质谱成像技术对生物活性埃莫丁进行全面的空间分布分析
Si-Qi Han1,2, Xiao-Kang Fu1,2, Wei Ha3
1CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou, 730000, People's Republic of China.
概括
矩阵辅助激光脱/离子化飞行时间质谱成像 (MALDI-TOF-MSI) 精确地绘制了小鼠组织中的emodin分布. 这种方法揭示了对于理解emodin至关重要的详细空间信息.
科学领域:
- 药理学 药理学是指药理学的学科.
- 分析化学 分析化学
- 生物医学成像技术 生物医学成像技术
背景情况:
- 埃莫丁 (Emodin) 是一种来自鲁巴巴的素,具有抗炎性质.
- 了解emodin在组织中的空间分布对于其药理学和毒理学至关重要.
- 传统的方法缺乏空间分辨率来详细说明emodin的生物组织分布.
研究的目的:
- 为了建立一个矩阵辅助激光脱/离子化飞行时间质谱成像 (MALDI-TOF-MSI) 方法用于emodin.
- 调查emodin在各种小鼠器官中的空间和时间分布.
- 为emodin的作用机制提供详细的分子成像数据.
主要方法:
- 开发了矩阵辅助激光脱/离子化飞行时间质谱成像 (MALDI-TOF-MSI).
- 测量是在负离子模式 (m/z 250285 Da) 中进行的,空间分辨率为40μm.
- 在小鼠的心脏,肝脏,脏,肺部,脏和大脑组织部分分析了埃莫丁的分布.
主要成果:
- 埃莫丁主要存在于心脏的动脉动脉血管区域,囊和皮层.
- MALDI-TOF-MSI表明了大脑内的潜在的埃莫丁分布.
- 结果与超高性能液体染色学/并联质谱学 (UPLC-MS/MS) 数据有很好的一致性.
结论:
- 已建立的MALDI-TOF-MSI方法为emodin提供了准确的,无标签的空间分布信息.
- 这种技术为emodin的作用机制和药理动力学提供了重要的见解.
- MALDI-TOF-MSI是一个有价值的工具,用于研究传统中医药的活性成分和机制,如胡卜.
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