Abstract:
Background. Proprietary magnetic nanoparticles (Fe3O4) with diameters around 40 nm were
synthesized by the coprecipitation method and coated with oleic acid. The OA-Fe3O4 magnetic
nanoparticles were formulated as magneto-liposomes containing ascorbic acid and dexamethasone
with sizes below 210 nm. According to this study, magnetic nanoparticles loaded with bioactive
molecules can be used to deliver bioactive molecules to osteoarthritic joints with minimal side effects.
Materials and methods. We investigated the magnetic behavior of magneto-liposomes by vibrating
sample magnetometry (VSM). Using dynamic light scattering (DLS) and zeta potential measurements,
magneto-liposomes were characterized in terms of their size, surface charge, and stability. A study of
the in vitro biocompatibility, iron cell uptake, drug release, anti-senescence, and proliferation potential
of the system was also conducted.
Results. The obtained magnetic nano-emulsions provided superior stability, magnetic properties, and
biocompatibility when used as carriers for anti-inflammatory drugs such as dexamethasone and
ascorbic acid.
Conclusions. This study showed enhanced ADSC migration potential along with chondrogenesis,
which suggests magneto-liposomes containing dexamethasone could be used to alleviate symptoms of
OA. Slow ascorbic acid release may further assist cartilage regeneration.
