脂质纳米粒子的漂浮系数分布通过沉积速度分析超离心
Huaying Zhao1, Alioscka A Sousa2, Peter Schuck1
1Laboratory of Dynamics of Macromolecular Assembly, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland 20892, United States.
ACS nano
|July 5, 2024
概括
我们开发了一种使用沉积速度分析超离心法 (SV-AUC) 分析脂质纳米粒子 (LNP) 的新方法. 这种方法克服了浮动问题,使得用于治疗和疫苗应用的LNP能够得到 robust 的表征.
科学领域:
- 生物物理特性表征
- 对纳米粒子进行分析.
- 药物输送系统是药物输送系统.
背景情况:
- 脂质纳米颗粒 (LNP) 对于提供治疗药物和疫苗至关重要.
- 对于将LNP转化为临床应用来说,对LNP的强有力的表征至关重要.
- 沉积速度分析超离心 (SV-AUC) 是一种强大的纳米粒子分析技术,但在LNP浮动方面面临着挑战.
研究的目的:
- 开发一种新的SV-AUC分析方法,用于表征脂质纳米粒子 (LNPs).
- 在分析浮力纳米粒子时克服传统SV-AUC模型的局限性.
- 为了能够准确评估LNP大小分布,相互作用和组成.
主要方法:
- 开发了一种扩散解密的沉积/浮动分布分析方法,类似于c (s) 模型.
- 使用了平均粒子大小或扩散系数的独立测量,例如来自动态光散射 (DLS).
- 在广泛使用的SEDFIT软件中实现了该方法,以实现可访问性.
主要成果:
- 证明了新方法对实验性脂质体和商业LNP产品的应用.
- 通过克服与标准沉积模型的浮动不兼容性,成功地表征了LNP.
- 提供了LNP大小分布和属性的高分辨率分析.
结论:
- 开发的SV-AUC方法为LNP表征提供了一个强大的解决方案.
- 这种方法增强了基于LNP的疗法和疫苗的翻译潜力.
- 该方法具有适应性,并集成到现有的分析工作流中.
相关概念视频
Centrifugation
2.2K
Centrifugation is a separation technique based on differences in density or size. It is commonly used to separate solids from aqueous interferents. During centrifugation, the sample is placed in centrifugation tubes and spun at high angular velocity, which allows centrifugal force to act differentially on the different densities or masses of the components. After spinning, the supernatant liquid is decanted. Depending on the specific application, either the pellet or the supernatant is retained...
2.2K
Subcellular Fractionation
7.0K
The homogenate obtained after cell lysis contains various membrane-bound organelles that can be further separated into pure fractions by subcellular fractionation. These isolates are used to study specific cellular components, analyze localized protein activity, and are even employed in diagnostics. Fractionation is typically achieved using centrifugation methods, the most common being density-gradient and differential centrifugation.
Differential Centrifugation
Differential centrifugation is...
Differential Centrifugation
Differential centrifugation is...
7.0K


