通过PHIP实现实时的酸盐化学转化监测
Gabriele Stevanato1,2, Yonghong Ding1,2, Salvatore Mamone1,2
1NMR Signal Enhancement Group, Max Planck Institute for Multidisciplinary Sciences, Am Fassberg 11, 37077 Göttingen, Germany.
Journal of the American Chemical Society
|March 1, 2023
概括
双诱导的极化侧臂化超极化[1,2-C]酸盐,使得使用不同的碳位点同时监测代谢和化学反应.
科学领域:
- 磁共振成像技术
- 超极化技术
- 代谢成像
背景情况:
- 双诱导极化侧臂化 (PHIP-SAH) 是一种超极化分子的方法.
- 在之前的研究中,酸的两极分化率为27%.
- 监测代谢转化需要敏感的技术.
研究的目的:
- 使用PHIP-SAH来证明[1,2-C]酸盐的超极化.
- 调整MINERVA脉冲序列以提高光谱对比度.
- 通过不同的碳位点同时监测不同的化学反应或相同的反应.
主要方法:
- 通过PHIP-SAH进行[1,2-13C]pyruvate的超极化.
- 使用修改参数的MINERVA脉冲序列.
- 在水溶液,细胞内 (HeLa) 和高温条件下进行实验.
主要成果:
- 在 [1,2-13C]酸盐中实现了每次13C旋转的~7%极化.
- 使用C1和C2位点同时监测酸盐转化.
- 成功监测了包括酸盐,二氧化碳和碳酸盐生产在内的同时反应.
- 在55°C实时检测到中间体2-氧-2-氧酸盐.
结论:
- 经过修改的MINERVA序列可以实现多功能超极化和对[1,2-C]pyruvate的监测.
- 这种技术可以同时观察不同的化学过程,并增强光谱对比度.
- 在高温下实时表征反应中间体是可行的.
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