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作为磁共振和光成像对比剂的Mn-Doped碳点

Corneliu S Stan^1,2, Adina Coroaba¹, Natalia Simionescu¹

¹Centre of Advanced Research in Bionanoconjugates and Biopolymers, "Petru Poni" Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania.

International journal of molecular sciences

|July 12, 2025

概括

这项研究引入了 (II) 化碳纳米点 (Mn(II) -CNDs) 作为双模式成像剂. 这些生物相容的Mn(II) -CNDs显示出作为有效的光和MRI对比剂,具有良好的细胞活力.

科学领域:

纳米技术纳米技术
生物医学成像技术生物医学成像技术
材料科学材料科学材料科学

背景情况:

由于其独特的光学特性,碳纳米点 (CND) 正在被用于诊断和治疗应用.
(II) 兴奋剂增强了光和磁共振成像 (MRI) 的CND.
现有的对比剂,如加多复合物,面临审查.

研究的目的:

合成生物相容的 (II) 化碳纳米颗粒 (Mn(II) -CNDs).
在体外评估它们作为光和MRI对比剂的性能.
评估它们作为加多基对比剂的替代品的潜力.

主要方法:

通过热分解合成Diphenylhydantoin-Mn(II) 复合物的合成.
光学属性的表征 (光照发光).
在体外评估MRI对比度增强 (T2放松性) 和细胞毒性测试.

主要成果:

成功合成了二化CNDs,其旋转密度有利于MRI.
证明了明亮的蓝色光发光和有效的体外光成像.
展示了T2对比剂的潜力,具有比商业剂更高的放松性.
在黑色素瘤细胞中显示出良好的细胞活力,但在骨髓瘤和乳腺腺癌细胞中显示出细胞毒性.

结论:

合成的Mn(II) -CNDs是双光和MRI成像的有希望的生物相容剂.
它们的高放松性和简单的合成为加多对比剂提供了替代品.
对细胞特异性细胞毒性进行进一步的研究是必要的.

关键词:

碳纳米颗粒是一种碳纳米颗粒.对比剂对比剂是一种对比剂.基antoin 是一种基antoin.光成像成像技术的使用.磁共振成像技术的使用复合物复合物复合物

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