Self-assembled nanoparticles enable delivery of VCP inhibitor, resulting in enhanced photoreceptor protection in retinal explants
| Autor: | Al-Amin M, Arto Urtti, Eva Kicková, Marius Ueffing, Stefano Salmaso, Blanca Arango-Gonzalez, Merve Sen, Amir Sadeghi, Paolo Caliceti, Jooseppi Puranen |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Drug
Retinal degeneration 0303 health sciences biology media_common.quotation_subject Retinal Translation (biology) medicine.disease 3. Good health Cell biology 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine chemistry Rhodopsin Chaperone (protein) biology.protein medicine Ethylene glycol 030217 neurology & neurosurgery Ex vivo 030304 developmental biology media_common |
| DOI: | 10.1101/2021.06.11.448060 |
| Popis: | 1.AbstractMutations in rhodopsin lead to its misfolding resulting in autosomal dominant retinitis pigmentosa (adRP). Pharmacological inhibition of the ATP-driven chaperone valosin- containing protein (VCP), a molecular checkpoint for protein quality control, slows down retinal degeneration in animal models. However, poor water-solubility of VCP inhibitors poses a challenge to their clinical translation as intravitreal injections for retinal treatment. In order to enable the delivery of VCP inhibitors, we have developed and investigated two formulations for the VCP inhibitor ML240. Nanoformulations of ML240 were obtained by using amphiphilic polymers methoxy-poly (ethylene glycol)5kDa-cholane (mPEG5kDa-cholane) and methoxy-poly (ethylene glycol)5kDa- cholesterol (mPEG5kDa-cholesterol). Both formulations increased the water-solubility of ML240 by two orders of magnitude and prolonged the drug released over ten days. Encapsulation of ML240 in mPEG5kDa-cholane showed superior photoreceptor protection at lower drug concentrations, normalized rhodopsin localization, and alleviated inflammatory microglial responses in an ex vivo rat model of retinal degeneration. The study demonstrates the potential of VCP inhibitor nanoformulations to treat adRP, a pharmacologically orphan disease. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|