共同II) 宏环复合物与胺-甘酸作为ParaCEST和脂质体CEST剂
Jaclyn J Raymond1, Md Saiful I Chowdhury1, Matthew R Crawley1
1Department of Chemistry, University at Buffalo, the State University of New York, Amherst, NY 14260.
Chemistry (Weinheim an der Bergstrasse, Germany)
|June 11, 2024
概括
新的偏磁性 (cobalt) 复合物被开发为化学交换和转移 (CEST) 剂. 这些具有较低电荷和度的药物适用于脂质体封装,改善水溶性和动物耐受性.
科学领域:
- 无机化学 无机化学
- 材料科学 材料科学 材料科学
- 生物医学成像技术 生物医学成像技术
背景情况:
- 开发用于增强成像对比度的磁性金属复合体.
- 需要降低对比剂的电荷和度,用于脂质体输送和改善生物相容性.
- 探索用于化学交换和转移 (CEST) 应用的宏环复合物.
研究的目的:
- 合成和表征具有胺-糖酸盐组的新型宏环 ((II) 复合物.
- 为了评估这些复合物作为具有降低电荷和度的偏磁CEST剂.
- 为了研究将这些药物封装到脂质体中以提高成像效果的可行性.
主要方法:
- 合成宏环性 (II) 复合物,特别是 (L1) 和 (L2) 复合物,在旋骨架上具有不同的悬挂组.
- 使用1H NMR光谱学和X射线晶体学进行结构性表征.
- 通过Z频谱分析和脂质体封装研究评估CEST成像剂.
主要成果:
- Co(L1) 存在于一个单独的cis-悬挂异构体,而Co(L2) 呈现出异构体的混合物.
- Co(L1) 显示了一个单一的,高度移动的CEST峰值,而Co(L2) 显示了六个CEST峰值.
- 在脂质体中封装Co(L1) 产生了一种具有3ppm和频率偏移的CEST剂;添加Co(L5) 将其修改为-7.5ppm.
结论:
- 宏环Co (II) 复合物与胺-甘酸可以被设计为有效的偏磁CEST剂.
- 可以实现降低电荷和度,促进脂质体配方并改善生理兼容性.
- 结合这些Co (II) 复合体的脂质体输送系统显示出对先进的生物医学成像应用的前景.
相关概念视频
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