芯-外构造 dendrimers 增强的瘤成像:脊柱的刚性问题
Mengsi Zhan1,2, Dayuan Wang2, Lingzhou Zhao3
1Department of Radiology, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai 200434, China. guixiangzhang@sina.com.
Biomaterials science
|October 4, 2023
概括
刚性核外纹状树枝体 (CSTDs) 增强瘤向和成像. 这些纳米平台改善了细胞吸收和瘤保留的双模式光和SPECT成像,推进了癌症纳米医学.
科学领域:
- 纳米医学是一种纳米医学.
- 生物材料科学 生物材料科学
- 放射化学 放射化学是指辐射化学.
背景情况:
- 纳米平台对于瘤治疗至关重要,需要增强的被动准和蛋白质抗性.
- 为了有效的瘤积累,需要将网膜内皮系统的吸收量降到最低.
- 开发具有改善瘤保留力的纳米结构是准确诊断和治疗的关键.
研究的目的:
- 为增强瘤成像,构建具有刚性芳香核的核外形状树枝体 (CSTDs).
- 评估这些CSTD的双模式光和单光子发射计算机断层扫描 (SPECT) 功能.
- 调查核心刚度对瘤向和增强透性和保留 (EPR) 效应的影响.
主要方法:
- P-G2.5/G3 CSTDs与刚性芳香核心的合成.
- 与四环多德干四酸 (DOTA),5.5 (Cy5.5) 和1,3-硫酸盐 (1,3-PS) 的结合.
- 用技术-99m (99mTc) 进行标记,用于SPECT成像和物理化学性质的评估,体外细胞吸收,球状透和体内瘤成像.
主要成果:
- 合成的P-G2.5/G3-DOTA-Cy5.5-PS CSTDs表现出良好的单分散性 (10.1 nm),蛋白质抵抗性和细胞兼容性.
- 与柔软的多胺胺) 树枝状体相比,刚性CSTD显示出更有效的细胞吸收和更大的透3D瘤球体.
- 在体内研究表明,瘤保留和积累显著增强,从而改善了双模式光和SPECT成像.
结论:
- 在CSTD中,核心的刚性在放大瘤EPR效应方面起着至关重要的作用.
- CSTD提供了一个有前途的纳米平台,用于增强瘤向和治疗术.
- 这项研究强调了核心材料特性在开发先进的癌症纳米药物中的重要性.
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