相关实验视频
Updated: Jul 26, 2026

09:06
Intra-lymph Node Injection of Biodegradable Polymer Particles
Published on: January 2, 2014
14.4K
具有不同颗粒大小的β-葡萄糖修饰纳米颗粒具有不同的淋巴向效率和辅助作用
Wen Guo1, Xinyue Zhang1, Long Wan2,3
1Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning Province 110016, China.
Journal of pharmaceutical analysis
|January 23, 2025
概括
具有β-葡萄糖修饰的较小的半孔性纳米颗粒 (MSNs) 显示出增强的淋巴向和树突细胞成熟,以有效的纳米疫苗输送. 这种100纳米MSN配方对疫苗开发和治疗淋巴介导疾病充满希望.
科学领域:
- 纳米技术纳米技术
- 免疫学 免疫学 免疫学
- 材料科学 材料科学 材料科学
背景情况:
- 粒子大小和表面特性对纳米疫苗的有效性至关重要,影响淋巴排水,树突细胞 (DC) 吸收和免疫反应.
- 介质纳米粒子 (MSN) 特性对这些免疫过程的具体影响仍然在很大程度上未被探索.
研究的目的:
- 调查不同颗粒大小和β-葡萄糖表面修饰MSN如何影响纳米疫苗应用的免疫反应.
- 确定最佳的MSN特征,以提高疫苗的输送和免疫性.
主要方法:
- 合成的MSN颗粒大小为50,100和200纳米,载有卵蛋白 (OVA) 抗原.
- 用β-葡萄糖修饰的MSN来增强免疫性.
- 在体外和体内评估MSN性能,评估淋巴细胞向,DC成熟和抗原呈现.
主要成果:
- 实验室研究表明,在不同大小的MSN中,效率可比,β-葡萄糖修饰增加了效率.
- 在体内研究表明,较小的MSN (约100nm) 显示出优越的淋巴向和DC成熟.
- 用β-葡萄糖修饰的100纳米MSN显示出作为疫苗输送载体和免疫辅助剂的巨大潜力.
结论:
- 颗粒大小是基于MSN的纳米疫苗在体内有效性的关键因素,较小的颗粒可增强淋巴向和DC成熟.
- β-葡萄糖修饰进一步提高了免疫性,使100纳米β-葡萄糖-MSNs成为纳米疫苗的有希望的候选人.
- 这种方法提供了一种新的策略,用于为淋巴介导疾病提供治疗剂.
相关概念视频
Insulin Secretory Vesicles
Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...
Cell Diversity
The concept of a cell started with microscopic observations of dead cork tissue by Robert Hooke in 1665. Hooke coined the term "cell" based on the resemblance of the small subdivisions in the cork to the rooms that monks inhabited, called cells. About ten years later, Antonie van Leeuwenhoek became the first person to observe the living and moving cells under a microscope. In the century that followed, the theory that cells represented the basic unit of life developed.
Multicellular organisms...
Multicellular organisms...
Microvilli
Microvilli are tiny finger-like projections found on the surface of certain cells. Their purpose is to increase the surface area of the cell's apical surface, resulting in more effective absorption or secretion of substances.
These microvilli are predominantly present in cells lining the small intestine, kidney tubules, and certain cells in the respiratory and reproductive systems. By significantly expanding the surface area of the cell membrane, microvilli enhance the cell's capacity to...
These microvilli are predominantly present in cells lining the small intestine, kidney tubules, and certain cells in the respiratory and reproductive systems. By significantly expanding the surface area of the cell membrane, microvilli enhance the cell's capacity to...
Carbohydrate Absorption
Carbohydrates are essential macronutrients that serve as the body's primary energy source. Their digestion begins in the mouth, where salivary amylase partially breaks down complex carbohydrates such as starch into smaller oligosaccharides. This mechanical and enzymatic activity prepares carbohydrates for further processing in the gastrointestinal tract.
After being swallowed, the partially digested carbohydrates mix with gastric secretions in the stomach. However, the acidic environment...
After being swallowed, the partially digested carbohydrates mix with gastric secretions in the stomach. However, the acidic environment...
Factors Affecting Dissolution: Particle Size and Effective Surface Area
Dissolution kinetics, an essential aspect of oral drug delivery, is significantly influenced by the drug's particle size. According to the Noyes-Whitney dissolution model, the dissolution rate correlates directly with the drug's surface area. The larger the surface area, the higher the drug's solubility in water, leading to a faster drug dissolution rate. Reducing particle size increases the effective surface area, enhancing the dissolution process. Micronization and nanosizing are employed to...

