阴离子聚酸涂层的表面性将纳米颗粒向与癌症相关的氨基酸载体
Ivan S Pires1,2, Margaret M Billingsley1, Ezra Gordon2
1Koch Institute for Integrative Cancer Research, MIT.
bioRxiv : the preprint server for biology
|August 6, 2025
概括
层层地涂上聚L-谷氨酸的纳米粒子通过与SLC1A5谷氨酸载体结合来向癌细胞. 这种结合机制通过聚合载体和延长细胞表面保留来增强药物递送.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 癌症生物学 癌症生物学
背景情况:
- 针对瘤的药物输送旨在提高癌症治疗的疗效,减少副作用.
- 涂有阴离子多的逐层纳米粒子 (LbL-NP) 显示选择性结合癌细胞,但根本机制尚未完全理解.
研究的目的:
- 阐明离子聚涂层LbL-NP向癌细胞的分子机制.
- 为了确定参与纳米粒子与癌细胞相互作用的特定受体.
- 建立基于癌细胞代谢特征的受体向药物递送机制框架.
主要方法:
- 集成的in silico (基于AI的蛋白质建模) 和体外方法.
- 基因表达分析以确定过度表达的受体.
- 受体抑制测定以确认结合特异性.
- 在各种癌症细胞系中进行相关性分析.
主要成果:
- 聚L-氨酸 (PLE) 涂层的LbL-NP对SLC1A5表现出高性结合,SLC1A5是一种在癌症中过度表达的谷氨酸运输体.
- PLE涂层诱导SLC1A5在癌细胞膜上的聚合,导致长时间的纳米粒子保留.
- 聚L-酸盐 (PLD) 涂层的NP也与SLC1A5结合,并与其他离子氨基酸载体相互作用.
- 在不同癌症细胞系的运输体表达水平和纳米颗粒协会之间观察到强烈的相关性.
结论:
- 通过吸附的多酸盐呈现的谷氨酸或酸盐的密集呈现可以选择性向癌细胞上的过度表达的载体.
- 这种机制为针对受体的纳米粒子输送系统提供了合理的设计策略.
- 这些发现提供了适用于各种固体瘤类型的机制理解,利用它们的代谢脆弱性.
更多相关视频
09:09Synthesis of Aptamer-PEI-g-PEG Modified Gold Nanoparticles Loaded with Doxorubicin for Targeted Drug Delivery
Published on: June 23, 2020
6.1K
10:46A Flow Cytometry-Based Cell Surface Protein Binding Assay for Assessing Selectivity and Specificity of an Anticancer Aptamer
Published on: September 13, 2022
3.8K
相关概念视频
Targeted Cancer Therapies
7.8K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.8K
Carrier-Mediated Transport
547
Carrier-mediated transport is a pivotal process in drug absorption, particularly for lipid-insoluble drugs, and encompasses facilitated diffusion and active transport. Facilitated diffusion allows drugs to move along their concentration gradient without energy expenditure, while active transport utilizes ATP to drive drug movement against this gradient.
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
547
