Formulation and Efficacy of Catalase-Loaded Nanoparticles for the Treatment of Neonatal Hypoxic-Ischemic Encephalopathy
Neonatal hypoxic-ischemic encephalopathy is the leading cause of permanent brain injury in term newborns and currently has no cure. Catalase, an antioxidant enzyme, is a promising therapeutic due to its ability to scavenge toxic reactive oxygen species and improve tissue oxygen status. However, upon...
Main Authors: | , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-07-01
|
Series: | Pharmaceutics |
Subjects: | |
Online Access: | https://www.mdpi.com/1999-4923/13/8/1131 |
id |
doaj-a7ff1e24210240c58ca5acb09e70392a |
---|---|
record_format |
Article |
spelling |
doaj-a7ff1e24210240c58ca5acb09e70392a2021-08-26T14:12:45ZengMDPI AGPharmaceutics1999-49232021-07-01131131113110.3390/pharmaceutics13081131Formulation and Efficacy of Catalase-Loaded Nanoparticles for the Treatment of Neonatal Hypoxic-Ischemic EncephalopathyAndrea Joseph0Chris W. Nyambura1Danielle Bondurant2Kylie Corry3Denise Beebout4Thomas R. Wood5Jim Pfaendtner6Elizabeth Nance7Department of Chemical Engineering, University of Washington, Seattle, WA 98195, USADepartment of Chemical Engineering, University of Washington, Seattle, WA 98195, USADepartment of Chemical Engineering, University of Washington, Seattle, WA 98195, USADivision of Neonatology, Department of Pediatrics, University of Washington, Seattle, WA 98195, USADepartment of Chemical Engineering, University of Washington, Seattle, WA 98195, USADivision of Neonatology, Department of Pediatrics, University of Washington, Seattle, WA 98195, USADepartment of Chemical Engineering, University of Washington, Seattle, WA 98195, USADepartment of Chemical Engineering, University of Washington, Seattle, WA 98195, USANeonatal hypoxic-ischemic encephalopathy is the leading cause of permanent brain injury in term newborns and currently has no cure. Catalase, an antioxidant enzyme, is a promising therapeutic due to its ability to scavenge toxic reactive oxygen species and improve tissue oxygen status. However, upon in vivo administration, catalase is subject to a short half-life, rapid proteolytic degradation, immunogenicity, and an inability to penetrate the brain. Polymeric nanoparticles can improve pharmacokinetic properties of therapeutic cargo, although encapsulation of large proteins has been challenging. In this paper, we investigated hydrophobic ion pairing as a technique for increasing the hydrophobicity of catalase and driving its subsequent loading into a poly(lactic-co-glycolic acid)-poly(ethylene glycol) (PLGA-PEG) nanoparticle. We found improved formation of catalase-hydrophobic ion complexes with dextran sulfate (DS) compared to sodium dodecyl sulfate (SDS) or taurocholic acid (TA). Molecular dynamics simulations in a model system demonstrated retention of native protein structure after complexation with DS, but not SDS or TA. Using DS-catalase complexes, we developed catalase-loaded PLGA-PEG nanoparticles and evaluated their efficacy in the Vannucci model of unilateral hypoxic-ischemic brain injury in postnatal day 10 rats. Catalase-loaded nanoparticles retained enzymatic activity for at least 24 h in serum-like conditions, distributed through injured brain tissue, and delivered a significant neuroprotective effect compared to saline and blank nanoparticle controls. These results encourage further investigation of catalase and PLGA-PEG nanoparticle-mediated drug delivery for the treatment of neonatal brain injury.https://www.mdpi.com/1999-4923/13/8/1131hypoxia-ischemiahydrophobic-ion pairingcatalasenanomedicineneonatalmolecular dynamics |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Andrea Joseph Chris W. Nyambura Danielle Bondurant Kylie Corry Denise Beebout Thomas R. Wood Jim Pfaendtner Elizabeth Nance |
spellingShingle |
Andrea Joseph Chris W. Nyambura Danielle Bondurant Kylie Corry Denise Beebout Thomas R. Wood Jim Pfaendtner Elizabeth Nance Formulation and Efficacy of Catalase-Loaded Nanoparticles for the Treatment of Neonatal Hypoxic-Ischemic Encephalopathy Pharmaceutics hypoxia-ischemia hydrophobic-ion pairing catalase nanomedicine neonatal molecular dynamics |
author_facet |
Andrea Joseph Chris W. Nyambura Danielle Bondurant Kylie Corry Denise Beebout Thomas R. Wood Jim Pfaendtner Elizabeth Nance |
author_sort |
Andrea Joseph |
title |
Formulation and Efficacy of Catalase-Loaded Nanoparticles for the Treatment of Neonatal Hypoxic-Ischemic Encephalopathy |
title_short |
Formulation and Efficacy of Catalase-Loaded Nanoparticles for the Treatment of Neonatal Hypoxic-Ischemic Encephalopathy |
title_full |
Formulation and Efficacy of Catalase-Loaded Nanoparticles for the Treatment of Neonatal Hypoxic-Ischemic Encephalopathy |
title_fullStr |
Formulation and Efficacy of Catalase-Loaded Nanoparticles for the Treatment of Neonatal Hypoxic-Ischemic Encephalopathy |
title_full_unstemmed |
Formulation and Efficacy of Catalase-Loaded Nanoparticles for the Treatment of Neonatal Hypoxic-Ischemic Encephalopathy |
title_sort |
formulation and efficacy of catalase-loaded nanoparticles for the treatment of neonatal hypoxic-ischemic encephalopathy |
publisher |
MDPI AG |
series |
Pharmaceutics |
issn |
1999-4923 |
publishDate |
2021-07-01 |
description |
Neonatal hypoxic-ischemic encephalopathy is the leading cause of permanent brain injury in term newborns and currently has no cure. Catalase, an antioxidant enzyme, is a promising therapeutic due to its ability to scavenge toxic reactive oxygen species and improve tissue oxygen status. However, upon in vivo administration, catalase is subject to a short half-life, rapid proteolytic degradation, immunogenicity, and an inability to penetrate the brain. Polymeric nanoparticles can improve pharmacokinetic properties of therapeutic cargo, although encapsulation of large proteins has been challenging. In this paper, we investigated hydrophobic ion pairing as a technique for increasing the hydrophobicity of catalase and driving its subsequent loading into a poly(lactic-co-glycolic acid)-poly(ethylene glycol) (PLGA-PEG) nanoparticle. We found improved formation of catalase-hydrophobic ion complexes with dextran sulfate (DS) compared to sodium dodecyl sulfate (SDS) or taurocholic acid (TA). Molecular dynamics simulations in a model system demonstrated retention of native protein structure after complexation with DS, but not SDS or TA. Using DS-catalase complexes, we developed catalase-loaded PLGA-PEG nanoparticles and evaluated their efficacy in the Vannucci model of unilateral hypoxic-ischemic brain injury in postnatal day 10 rats. Catalase-loaded nanoparticles retained enzymatic activity for at least 24 h in serum-like conditions, distributed through injured brain tissue, and delivered a significant neuroprotective effect compared to saline and blank nanoparticle controls. These results encourage further investigation of catalase and PLGA-PEG nanoparticle-mediated drug delivery for the treatment of neonatal brain injury. |
topic |
hypoxia-ischemia hydrophobic-ion pairing catalase nanomedicine neonatal molecular dynamics |
url |
https://www.mdpi.com/1999-4923/13/8/1131 |
work_keys_str_mv |
AT andreajoseph formulationandefficacyofcatalaseloadednanoparticlesforthetreatmentofneonatalhypoxicischemicencephalopathy AT chriswnyambura formulationandefficacyofcatalaseloadednanoparticlesforthetreatmentofneonatalhypoxicischemicencephalopathy AT daniellebondurant formulationandefficacyofcatalaseloadednanoparticlesforthetreatmentofneonatalhypoxicischemicencephalopathy AT kyliecorry formulationandefficacyofcatalaseloadednanoparticlesforthetreatmentofneonatalhypoxicischemicencephalopathy AT denisebeebout formulationandefficacyofcatalaseloadednanoparticlesforthetreatmentofneonatalhypoxicischemicencephalopathy AT thomasrwood formulationandefficacyofcatalaseloadednanoparticlesforthetreatmentofneonatalhypoxicischemicencephalopathy AT jimpfaendtner formulationandefficacyofcatalaseloadednanoparticlesforthetreatmentofneonatalhypoxicischemicencephalopathy AT elizabethnance formulationandefficacyofcatalaseloadednanoparticlesforthetreatmentofneonatalhypoxicischemicencephalopathy |
_version_ |
1721190772593655808 |