Polymer-mediated delivery of vaccines to treat opioid use disorders and to reduce opioid-induced toxicity
| Autor: | Megan Laudenbach, Marco Pravetoni, Rasidul Amin, Santhi Abbaraju, Brian C. Gilger, Poonam Velagaleti, Federico Baruffaldi, Valeria Gradinati |
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| Rok vydání: | 2020 |
| Předmět: |
Polymers
medicine.medical_treatment 030231 tropical medicine Pharmacology Article Mice 03 medical and health sciences 0302 clinical medicine Animals Medicine Distribution (pharmacology) 030212 general & internal medicine Vaccines General Veterinary General Immunology and Microbiology business.industry Public Health Environmental and Occupational Health Opioid-Related Disorders Vaccine efficacy Rats Analgesics Opioid Regimen Infectious Diseases Opioid Immunization Toxicity Molecular Medicine business Adjuvant Oxycodone medicine.drug |
| Zdroj: | Vaccine |
| ISSN: | 0264-410X |
| Popis: | Vaccines offer a potential strategy to treat opioid use disorders (OUD) and to reduce the incidence of opioid-related overdoses. Vaccines induce opioid-specific polyclonal antibodies that selectively and effectively bind the target opioid and prevent its distribution across the blood-brain barrier. Because antibody-mediated reduction of drug distribution to the brain reduces drug-induced behavior and toxicity, vaccine efficacy depends on the quantity and quality of the antibody response. This study tested whether polymer-mediated delivery could improve vaccine efficacy against opioids as well as eliminate the need for booster injections normally required for a successful immunization. A series of novel biodegradable biocompatible thermogelling pentablock co-polymers were used to formulate a candidate vaccine against oxycodone in mice and rats. Polymer-based delivery of the anti-oxycodone vaccine was equally or more effective than administration in aluminum adjuvant in generating oxycodone-specific antibodies and in reducing oxycodone-induced effects and oxycodone distribution to the brain in mice and rats. The composition and release kinetics of the polymer formulations determined vaccine efficacy. Specifically, a formulation consisting of three simultaneous injections of the anti-oxycodone vaccine formulated in three different polymers with slow, intermediate, and fast release kinetics was more effective than an immunization regimen consisting of three sequential injections with the vaccine adsorbed on aluminum. The novel three-phased polymer vaccine formulation was effective in blocking oxycodone-induced antinociception, respiratory depression and bradycardia in rats. |
| Databáze: | OpenAIRE |
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