Fluorometric Analysis of Individual Cationic Lipid-DNA Complexes
1Department of Biochemistry and Molecular Biology, Center for Biomolecular Therapeutics, Institute for Bioscience and Biotechnology Research, University of Maryland School of Medicine, 9600 Gudelsky Dr., 4127D Bldg 2, Rockville, MD, 20850, USA. EPozharskiy@som.umaryland.edu.
Methods in Molecular Biology (Clifton, N.J.)
|November 13, 2016
Summary
Flow fluorometry rapidly characterizes lipoplex particle size and composition distributions. This method is crucial for understanding lipoplex structure and optimizing genetic material delivery efficiency.
Area of Science:
- Biotechnology
- Nanotechnology
- Biochemistry
Background:
- Lipoplex preparations are complex mixtures with varying particle structures.
- Particle structure significantly impacts the efficiency of genetic material delivery.
- Accurate characterization of particle distribution is essential for reproducible results.
Purpose of the Study:
- To introduce and validate flow fluorometry for analyzing lipoplex preparations.
- To enable rapid and statistically robust characterization of lipoplex particle size and composition.
- To improve the understanding of structure-function relationships in lipoplex-based delivery systems.
Main Methods:
- Application of flow fluorometry using a standard flow cytometer.
- Analysis of lipoplex particle size distribution.
- Assessment of lipoplex particle composition distribution.
Main Results:
- Flow fluorometry provides rapid (minutes) generation of particle distributions.
- The method allows for detailed statistical analysis of lipoplex heterogeneity.
- Characterization includes both particle size and composition.
Conclusions:
- Flow fluorometry is an efficient technique for characterizing lipoplex preparations.
- This method facilitates better understanding and optimization of genetic delivery systems.
- The technique offers a significant advantage in speed and statistical power over traditional methods.
Keywords:
Cationic lipidFlow cytometryHeterogeneityLipoplexSingle particle detectionSize-stoichiometry distribution
