液体-液体提取相的在线直接输液质谱,用于使用直接输液探针进行代谢物和脂质分析
Cátia Marques1, Lena Blaase1, Ingela Lanekoff1
1Department of Chemistry-BMC, Uppsala University, Husargatan 3, 75 123 Uppsala, Sweden.
Metabolites
|November 26, 2024
概括
这项研究引入了快速液体-液体提取与直接输液质谱法 (LLE DIP-MS) 方法的同时代谢物和脂质分析. 这种技术增强了灵敏度,并提供了对细胞代谢的动态见解,特别是在胰岛素分泌细胞中.
科学领域:
- 生物化学 生物化学
- 分析化学 分析化学
- 细胞生物学 细胞生物学
背景情况:
- 代谢物和脂质分析为生物过程提供了关键的见解.
- 由于染色学限制,同时检测具有挑战性.
- 直接输液质谱法 (MS) 允许同时检测,但受到矩阵效应的影响.
研究的目的:
- 开发一种同时检测代谢物和脂质的方法,提高灵敏度和分子覆盖率.
- 在复杂的生物样本中克服直接输注MS的局限性.
- 为了研究细胞代谢中的动态变化.
主要方法:
- 结合直接输液探针 (DIP) 与液液提取 (LLE) 减少样品复杂性.
- 评估了三种LLE方法,选择了butanol-methanol (BUME) 方法,因为它的效率和低毒性.
- 应用了BUME DIP-MS方法来分析用葡萄糖刺激的胰岛素分泌细胞.
主要成果:
- 丁醇-甲醇 (BUME) 液体-液体提取方法证明了高分子覆盖率和低溶剂毒性.
- BUME DIP-MS方法提供了快速而敏感的细胞化学变化的分析.
- 在分泌胰岛素的细胞中观察到细胞内代谢的高动态,每隔1分钟.
结论:
- 开发的LLE DIP-MS工作流显著提高了对相分离代谢物和脂质的敏感性.
- BUME DIP-MS为INS-1细胞在胰岛素释放过程中的动态细胞内代谢提供了新的见解.
- 这种方法有助于更深入地了解细胞反应中的代谢物和脂类动态.
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