PURPOSE:

The study aimed to illustrate application of polycation Stealth nanogels for sustained delivery of methotrexate (MTX) in collagen induced arthritis (CIA) model in C57Bl/6 mice.

METHODS:

Nanogel synthesis involves metal ion coordinated self-assembly of PEGylated poly ethyleneimine (L-histidine substituted), chemical crosslinking and subsequent removal of the coordinated metal. The nanogels were characterized by TEM and DLS-zeta potential. Comparative efficacy and pharmacokinetics of the i.v. administred MTX-loaded nanogels were investigated in the CIA model. Inflammation site passive accumulation of the fluorophore-labeled nanogels was tested using in-vivo imaging of mice paw received unilateral injection of lipopolysaccharide.

 

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