1
|
Nanomaterials for direct and indirect immunomodulation: A review of applications. Eur J Pharm Sci 2020; 142:105139. [DOI: 10.1016/j.ejps.2019.105139] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 10/14/2019] [Accepted: 11/03/2019] [Indexed: 01/03/2023]
|
2
|
Drude N, Winz OH, Mottaghy FM, Roller M, Königs H, Möller M, Singh S, Morgenroth A. Impact of Glutathione Modulation on Stability and Pharmacokinetic Profile of Redox-Sensitive Nanogels. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1704093. [PMID: 29457349 DOI: 10.1002/smll.201704093] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 12/22/2017] [Indexed: 06/08/2023]
Abstract
Nanoparticles degradable upon external stimuli combine pharmacokinetic features of both small molecules as well as large nanoparticles. However, despite promising preclinical results, several redox responsive disulphide-linked nanoparticles failed in clinical translation, mainly due to their unexpected in vivo behavior. Glutathione (GSH) is one of the most evaluated antioxidants responsible for disulfide degradation. Herein, the impact of GSH on the in vivo behavior of redox-sensitive nanogels under physiological and modulated conditions is investigated. Labelling of nanogels with a DNA-intercalating dye and a radioisotope allows visualization of the redox responsiveness at the cellular and the systemic levels, respectively. In vitro, efficient cleavage of disulphide bonds of nanogels is achieved by manipulation of intracellular GSH concentration. While in vivo, the redox-sensitive nanogels undergo, to a certain extent, premature degradation in circulation leading to rapid renal elimination. This instability is modulated by transient inhibition of GSH synthesis with buthioninsulfoximin. Altered GSH concentration significantly changes the in vivo pharmacokinetics. Lower GSH results in higher elimination half-life and altered biodistribution of the nanogels with a different metabolite profile. These data provide strong evidence that decreased nanogel degradation in blood circulation can limit the risk of premature drug release and enhance circulation half-life of the nanogel.
Collapse
Affiliation(s)
- Natascha Drude
- Department of Nuclear Medicine, RWTH Aachen University, Aachen, 52074, Germany
- DWI - Leibniz Institute for Interactive Materials, RWTH Aachen University, Aachen, 52074, Germany
| | - Oliver H Winz
- Department of Nuclear Medicine, RWTH Aachen University, Aachen, 52074, Germany
| | - Felix M Mottaghy
- Department of Nuclear Medicine, RWTH Aachen University, Aachen, 52074, Germany
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, Maastricht, 6229, HX, The Netherlands
| | - Marion Roller
- Department of Nuclear Medicine, RWTH Aachen University, Aachen, 52074, Germany
| | - Hiltrud Königs
- Pathology-Electron Microscopy Facility, RWTH Aachen University, Aachen, 52074, Germany
| | - Martin Möller
- DWI - Leibniz Institute for Interactive Materials, RWTH Aachen University, Aachen, 52074, Germany
| | - Smriti Singh
- DWI - Leibniz Institute for Interactive Materials, RWTH Aachen University, Aachen, 52074, Germany
| | | |
Collapse
|
3
|
Gonçalves C, Ferreira SA, Correia AL, Lopes C, Fleming CE, Rocha E, Vilanova M, Gama M. Potential of mannan or dextrin nanogels as vaccine carrier/adjuvant systems. J BIOACT COMPAT POL 2016. [DOI: 10.1177/0883911516631354] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Polymeric nanogels have been sophisticatedly designed promising a new generation of vaccine delivery/adjuvant systems capable of boosting immune response, a strategic priority in vaccine design. Here, nanogels made of mannan or dextrin were evaluated for their potential as carriers/adjuvants in vaccine formulations. Since lymph nodes are preferential target organs for vaccine delivery systems, nanogels were biotin-labeled, injected in the footpad of rats, and their presence in draining lymph nodes was assessed by immunofluorescence. Nanogels were detected in the popliteal and inguinal lymph nodes by 24 h upon subcutaneous administration, indicating entrapment in lymphatic organs. Moreover, the model antigen ovalbumin was physically encapsulated within nanogels and physicochemically characterized concerning size, zeta potential, ovalbumin loading, and entrapment efficiency. The immunogenicity of these formulations was assessed in mice intradermally immunized with ovalbumin–mannan or ovalbumin–dextrin by determining ovalbumin-specific antibody serum titers. Intradermal vaccination using ovalbumin–mannan elicited a humoral immune response in which ovalbumin-specific IgG1 levels were significantly higher than those obtained with ovalbumin alone, indicating a TH2-type response. In contrast, dextrin nanogel did not show adjuvant potential. Altogether, these results indicate that mannan nanogel is a material that should be explored as a future antigen delivery system.
Collapse
Affiliation(s)
| | - Sílvia A Ferreira
- Centro de Engenharia Biológica, Universidade do Minho, Braga, Portugal
| | - Alexandra L Correia
- Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Célia Lopes
- Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Porto, Portugal
- Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Porto, Portugal
| | - Carolina E Fleming
- Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Porto, Portugal
- Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Porto, Portugal
| | - Eduardo Rocha
- Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Porto, Portugal
- Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Porto, Portugal
| | - Manuel Vilanova
- Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Porto, Portugal
- Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Miguel Gama
- Centro de Engenharia Biológica, Universidade do Minho, Braga, Portugal
| |
Collapse
|