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1 General aspects (0)   1.1 Epidemiology (8)   1.2 Population genetics (0)   1.3 Pathogenesis (1)   1.4 Quality of life (13)   1.5 Glaucomas as cause of blindness (4)   1.6 Prevention and screening (9) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (10)   2.2 Cornea (19)   2.3 Sclera (7)   2.4 Anterior chamber angle (7)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (15)     2.5.2 Schlemms canal (5)     2.5.3 Scleral outlet channels (0)   2.6 Aqueous humor dynamics (0)     2.6.1 Production (0)     2.6.2 Outflow (0)       2.6.2.1 Trabecular meshwork (6)       2.6.2.2 Uveoscleral (0)     2.6.3 Compostion (9)   2.7 Episcleral veins and venous pressure (0)   2.8 Iris (5)   2.9 Ciliary body (2)   2.10 Lens (0)   2.11 Vitreous body (1)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (6)   2.13 Retina and retinal nerve fibre layer (38)   2.14 Optic disc (36)   2.15 Optic nerve (4)   2.16 Chiasma and retrochiasmal central nervous system (14)   2.17 Stem cells (4)   2.20 Other (0) 3 Laboratory methods (0)   3.1 Microscopy (2)   3.2 Electron microscopy (0)   3.3 Immunohistochemistry (1)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (2)     3.4.2 Gene studies (20)   3.5 Molecular biology incl. 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pharmacoeconomics (4) 15 Miscellaneous (36)

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Abstract #90618 Published in IGR 21-3

Self-assembled DNA nanoparticles loaded with travoprost for glaucoma-treatment

Schnichels S; Hurst J; de Vries JW; Ullah S; Gruszka A; Kwak M; Löscher M; Dammeier S; Bartz-Schmidt KU; Spitzer MS; Herrmann A
Nanomedicine: Nanotechnology, Biology, and Medicine 2020; 29: 102260

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Lipid DNA nanoparticles (NPs) exhibit an intrinsic affinity to the ocular surface and can be loaded by hybridization with fluorophore-DNA conjugates or with the anti-glaucoma drug travoprost by hybridizing an aptamer that binds the medication. In the travoprost-loaded NPs (Trav-NPs), the drug is bound by specific, non-covalent interactions, not requiring any chemical modification of the active pharmaceutical ingredient. Fluorescently labeled Trav-NPs show a long-lasting adherence to the eye, up to sixty minutes after eye drop instillation. Biosafety of the Trav-NPs was proved and in vivo. Ex vivo and in vivo quantification of travoprost via LC-MS revealed that Trav-NPs deliver at least twice the amount of the drug at every time-point investigated compared to the pristine drug. The data successfully show the applicability of a DNA-based drug delivery system in the field of ophthalmology for the treatment of a major retinal eye disease, i.e. glaucoma.

Centre for Ophthalmology, University Eye Hospital Tübingen, Tübingen, Germany. Electronic address: sven.schnichels@med.uni-tuebingen.de.

Full article

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Classification:

11.16 Vehicles, delivery systems, pharmacokinetics, formulation (Part of: 11 Medical treatment)
11.4 Prostaglandins (Part of: 11 Medical treatment)

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