相关实验视频

Updated: Jun 15, 2026

Dendrimer-based Uneven Nanopatterns to Locally Control Surface Adhesiveness: A Method to Direct Chondrogenic Differentiation

Dendrimer-based Uneven Nanopatterns to Locally Control Surface Adhesiveness: A Method to Direct Chondrogenic Differentiation

Published on: January 20, 2018

优化表面胺/cRGD比率提高了cRGD功能化纳米药物的准效率

Rundi Song¹, Jiajia Tan¹, Jie Cen¹

¹Department of Pharmacy, The First Affiliated Hospital of University of Science and Technology of China (USTC), Laboratory of Precision and Intelligent Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui Province, China.

Journal of the American Chemical Society

|January 9, 2025

概括

在cRGD功能化纳米药物中优化醇-马利胺 (MI) 化学是关键. 较高的cRGD密度不会改善瘤向性,但会增加结合性;MI部分通过形成白蛋白冠状膜来缓解这种情况.

科学领域:

生物结合化学
纳米医学的发展
药物输送系统

背景情况:

-马利胺 (MI) 化学对于生物结合至关重要,特别是在纳米医学中.
循环阿根酸-甘氨酸-酸 (cRGD) 向整合蛋白αvβ3,通常用于纳米粒子功能化.
对于纳米药物的瘤向效率,cRGD密度的影响尚不清楚.

研究的目的:

研究不同MI/cRGD比如何影响cRGD功能化纳米药物的生物命运.
了解MI部分在调节蛋白质冠状和生物分布中的作用.
优化cRGD功能化的纳米药物,以提高瘤向和治疗效果.

主要方法:

采用自组装的纳米药物模型系统,由氨酸衍生物和PEG-PLA块共聚物组成.
改变MI/cRGD比率以创建具有不同密度的cRGD功能化的纳米药物.
分析了纳米药物的蛋白质冠状组成和生物分布 (肝脏,脏,瘤).

主要成果:

一个优化的cRGD/MI比率改变了蛋白质冠状,增加了白蛋白吸附.
无MI的cRGD纳米药物吸附免疫球蛋白和补充蛋白.
较高的cRGD密度导致肝脏和脏封存增加,而不是增强瘤向.
通过促进富含白蛋白的冠状体,MI 分组减轻了封存.

结论:

在改善cRGD功能化纳米药物的向和治疗效果方面,MI分量至关重要.
优化MI/cRGD比率并利用MI在蛋白质冠状形成中的作用可以提高纳米药物的疗效.
这些发现为最大限度地提高纳米药物的有效性提供了精细的策略,同时最大限度地减少了非目标效应.

更多相关视频

Synthesis of Functionalized 10-nm Polymer-coated Gold Particles for Endothelium Targeting and Drug Delivery

Synthesis of Functionalized 10-nm Polymer-coated Gold Particles for Endothelium Targeting and Drug Delivery

Published on: January 15, 2018

Surface Functionalization of Hepatitis E Virus Nanoparticles Using Chemical Conjugation Methods

Surface Functionalization of Hepatitis E Virus Nanoparticles Using Chemical Conjugation Methods

Published on: May 11, 2018

相关概念视频

Modified-Release Drug Delivery Systems: Site-Targeted

Modified-Release Drug Delivery Systems: Site-Targeted

Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.

Site-Targeted Drug Delivery Systems: Polymeric Carriers

Site-Targeted Drug Delivery Systems: Polymeric Carriers

Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...