Journal of Microencapsulation, Vol.37, No.7, 502-516, 2020
Preparation and characterization of lutein loaded folate conjugated polymeric nanoparticles
Aim To prepare and characterise lutein-loaded polylactide-co-glycolide-polyethylene glycol-folate (PLGA-PEG-FOLATE) nanoparticles and evaluate enhanced uptake in SK-N-BE(2) cells. Methods Nanoparticles were prepared using O/W emulsion solvent evaporation and characterised using DLS, SEM, DSC, FTIR and in-vitro release. Lutein-uptake in SK-N-BE(2) cells was determined using flow-cytometry, confocal-microscopy and HPLC. Control was lutein PLGA nanoparticles. Results The size of lutein-loaded PLGA and PLGA-PEG-FOLATE nanoparticles were 189.6 +/- 18.79 nm and 188.0 +/- 4.06 nm, respectively. Lutein entrapment was similar to 61%(w/w) and similar to 73%(w/w) for PLGA and PLGA-PEG-FOLATE nanoparticles, respectively. DSC and FTIR confirmed encapsulation of lutein into nanoparticles. Cellular uptake studies showed similar to 1.6 and similar to 2-fold enhanced uptake of lutein from PLGA-PEG-FOLATE nanoparticles compared to PLGA nanoparticles and lutein, respectively. Cumulative release of lutein was higher in PLGA nanoparticles (100% (w/w) within 24 h) compared to PLGA-PEG-FOLATE nanoparticles (similar to 80% (w/w) in 48 h). Conclusion Lutein-loaded PLGA-PEG-FOLATE nanoparticles could be a potential treatment for hypoxic ischaemic encephalopathy.
Keywords:Lutein;PLGA-PEG-FOLATE;folate decorated nanoparticles;PLGA;perinatal asphyxia;hypoxic ischaemic encephalopathy;targeted delivery