Physicochemical properties of core-shell type nanoparticles govern their spatiotemporal biodistribution in the eye.
Due to the inherent barrier properties of eye tissues, a major challenge in treating eye diseases is to provide a therapeutic agent to the desired tissue in quantities and durations that are favorable. This study aimed at understanding the influence of physicochemical properties of nanoparticles on their spatiotemporal biodistribution in mouse eye. For this, core-shell nanoparticles with different properties were designed by varying either core or shell and administered as eye-drops to mice. The results demonstrated that all nanoparticles irrespective of type of core or shell followed the conjunctival-scleral pathway. The bioavailability of cores followed the order polylactide-co-glycolide≥polylactide≥polycaprolactone for all tissues and time-points. The bioavailability for all shell types was greater in conjunctiva, sclera, choroid and retina when compared to other eye tissues. Therefore, modulating physicochemical properties of nanoparticles can be used as a design strategy to devise drug carriers that target specific tissues of the eye.
Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, India.
Binapani
B
Mahaling
Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, India. Electronic address: dsk@iitk.ac.in.
Dhirendra S
DS
Katti
D000818:Animals; D004337:Drug Carriers; D005123:Eye; D051379:Mice; D053758:Nanoparticles; D012160:Retina; D012590:Sclera; D014018:Tissue Distribution
D004337:Drug Carriers
Conjunctival–scleral pathway; Core–shell nanoparticles; Eye-tissue tropism; Physicochemical properties; Spatiotemporal biodistribution