Pharmaceutical Research

, Volume 29, Issue 6, pp 1637–1649 | Cite as

Multi-Compartmental Nanoparticles-in-Emulsion Formulation for Macrophage-Specific Anti-Inflammatory Gene Delivery

Research Paper



To develop a safe and effective non-viral vector for gene delivery and transfection in macrophages for potential anti-inflammatory therapy.


Solid nanoparticles-in-emulsion (NiE) multi-compartmental delivery system was designed using plasmid DNA-encapsulated type B gelatin nanoparticles suspended in the inner aqueous phase of safflower oil-containing water-in-oil-in-water (W/O/W) multiple emulsion. Control and NiE formulations were evaluated for DNA delivery and transfection efficiency in J774A.1 adherent murine macrophages.


Using green fluorescent protein (GFP) and murine interleukin-10 (mIL-10) expressing plasmid DNA constructs, the NiE formulation was found superior in enhancing intracellular delivery and gene transfection efficiency in cells. Anti-inflammatory effects of transfected mIL-10 were examined by suppression of tumor necrosis factor-alpha (TNFα) and interleukin 1-beta (IL-1β) production in lipopolysaccharide (LPS)-stimulated cells.


Overall, the results were very encouraging towards development of a macrophage-specific NiE-based multi-compartmental gene delivery strategy that can potentially affect a number of acute and chronic inflammatory diseases.


anti-inflammatory therapy macrophage-targeted mIL-10 transfection nanoparticles-in-emulsion non-viral gene delivery 



This study was supported by a grant (R01-DK080477) from the National Institute of Diabetes, Digestive Diseases, and Kidney Diseases of the National Institutes of Health. We deeply appreciate the assistance of Ms. Jing Xu with the transmission electron microscopy analysis that was performed at the Electron Microscopy Center of Northeastern University.


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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Department of Pharmaceutical Sciences, School of PharmacyNortheastern UniversityBostonUSA

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