1
|
Scherger M, Pilger YA, Komforth P, Räder HJ, Nuhn L. Reversible Polymer-Protein Functionalization by Stepwise Introduction of Amine-Reactive, Reductive-Responsive Self-Immolative End Groups onto RAFT-Derived Polymers. ACS Biomater Sci Eng 2024; 10:129-138. [PMID: 36695579 PMCID: PMC10777346 DOI: 10.1021/acsbiomaterials.2c01106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 01/06/2023] [Indexed: 01/26/2023]
Abstract
Many promising therapeutic protein or peptide drug candidates are rapidly excreted from an organism due to their small size or their inherent immunogenicity. One way to counteract these effects is PEGylation, in which the biopolymer is shielded by synthetic polymers exploiting their stealth properties. However, these modifications are often accompanied by a reduction in the biological function of the protein. By using responsive moieties that bridge the polymer to the protein, a reversible character is provided to this type of conjugation. In this regard, the reductive-responsive nature of disulfides can be exploited via self-immolative structures for reversible linkage to aminic lysine residues and the N-terminus on the protein surface. They enable a traceless release of the intact protein without any further modification and thus preserve the protein's bioactivity. In this study, we demonstrate how this chemistry can be made broadly accessible to RAFT-derived water-soluble polymers like poly(N,N-dimethylacrylamide) (pDMA) as a relevant PEG alternative. A terminal reactive imidazole carbamate with an adjacent self-immolative motif was generated in a gradual manner onto the trithiocarbonate chain transfer moiety of the polymer by first substituting it with a disulfide-bridged alcohol and subsequently converting it into an amine reactive imidazole carbamate. Successful synthesis and complete characterization were demonstrated by NMR, size exclusion chromatography, and mass spectrometry. Finally, two model proteins, lysozyme and a therapeutically relevant nanobody, were functionalized with the generated polymer, which was found to be fully reversible under reductive conditions in the presence of free thiols. This strategy has the potential to extend the generation of reversible reductive-responsive polymer-protein hybrids to the broad field of available functional RAFT-derived polymers.
Collapse
Affiliation(s)
- Maximilian Scherger
- Max
Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany
| | - Yannick A. Pilger
- Max
Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany
- Chair
of Macromolecular Chemistry, Department of Chemistry and Pharmacy, Julius-Maximilians-Universität Würzburg, Röntgenring 11, Würzburg 97070, Germany
| | - Patric Komforth
- Max
Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany
| | - Hans-Joachim Räder
- Max
Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany
| | - Lutz Nuhn
- Max
Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany
- Chair
of Macromolecular Chemistry, Department of Chemistry and Pharmacy, Julius-Maximilians-Universität Würzburg, Röntgenring 11, Würzburg 97070, Germany
| |
Collapse
|
2
|
Scherger M, Pilger YA, Stickdorn J, Komforth P, Schmitt S, Koynov K, Räder HJ, Nuhn L. Efficient Self-Immolative RAFT End Group Modification for Macromolecular Immunodrug Delivery. Biomacromolecules 2023; 24:2380-2391. [PMID: 37093222 PMCID: PMC10170519 DOI: 10.1021/acs.biomac.3c00239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
The reversible addition-fragmentation chain-transfer (RAFT) polymerization provides access to a broad variety of biocompatible and functional macromolecules for diverse polymer-drug conjugates. Due to thiocarbonylthio groups at the ends of each growing polymer chain, they can straightforwardly be converted into disufilde-containing self-immolative motives for reversible drug conjugation by traceless linkers. This may be relevant for RAFT-polymerized poly(N,N-dimethylacrylamide) (pDMA), which has been demonstrated to provide similar properties as poly(ethylene glycol) (PEG) in terms of improving the drug's poor pharmacokinetic profile or enhancing its bioavailability. For that purpose, we established a highly efficient one-pot reaction procedure for introducing various functionalities including both primary and secondary amines and primary alcohols and demonstrated their reversible conjugation and traceless release from pDMA's polymer chain end. Next, a first polymer-drug conjugate with a Toll-like receptor agonist exhibited significantly increased activity in vitro compared to conventional irreversibly covalently fixed variants. Finally, α-ω-bifunctional dye or drug conjugates could be generated by a cholesterol-modified RAFT chain-transfer agent. It facilitated the polymer-drug conjugate's internalization at the cellular level monitored by flow cytometry and confocal imaging. This approach provides the basis for a variety of potentially impactful polymer-drug conjugates by combining versatile small molecular drugs with a plethora of available RAFT polymers through reductive-responsive self-immolative linkers.
Collapse
Affiliation(s)
- Maximilian Scherger
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Yannick A Pilger
- Chair of Macromolecular Chemistry, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Judith Stickdorn
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Patric Komforth
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Sascha Schmitt
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Kaloian Koynov
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Hans Joachim Räder
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Lutz Nuhn
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Chair of Macromolecular Chemistry, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| |
Collapse
|
3
|
Stickdorn J, Stein L, Arnold-Schild D, Hahlbrock J, Medina-Montano C, Bartneck J, Ziß T, Montermann E, Kappel C, Hobernik D, Haist M, Yurugi H, Raabe M, Best A, Rajalingam K, Radsak MP, David SA, Koynov K, Bros M, Grabbe S, Schild H, Nuhn L. Systemically Administered TLR7/8 Agonist and Antigen-Conjugated Nanogels Govern Immune Responses against Tumors. ACS NANO 2022; 16:4426-4443. [PMID: 35103463 PMCID: PMC8945363 DOI: 10.1021/acsnano.1c10709] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The generation of specific humoral and cellular immune responses plays a pivotal role in the development of effective vaccines against tumors. Especially the presence of antigen-specific, cytotoxic T cells influences the outcome of therapeutic cancer vaccinations. Different strategies, ranging from delivering antigen-encoding mRNAs to peptides or full antigens, are accessible but often suffer from insufficient immunogenicity and require immune-boosting adjuvants as well as carrier platforms to ensure stability and adequate retention. Here, we introduce a pH-responsive nanogel platform as a two-component antitumor vaccine that is safe for intravenous application and elicits robust immune responses in vitro and in vivo. The underlying chemical design allows for straightforward covalent attachment of a model antigen (ovalbumin) and an immune adjuvant (imidazoquinoline-type TLR7/8 agonist) onto the same nanocarrier system. In addition to eliciting antigen-specific T and B cell responses that outperform mixtures of individual components, our two-component nanovaccine leads in prophylactic and therapeutic studies to an antigen-specific growth reduction of different tumors expressing ovalbumin intracellularly or on their surface. Regarding the versatile opportunities for functionalization, our nanogels are promising for the development of highly customized and potent nanovaccines.
Collapse
Affiliation(s)
- Judith Stickdorn
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Lara Stein
- Institute
of Immunology, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Danielle Arnold-Schild
- Institute
of Immunology, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Jennifer Hahlbrock
- Institute
of Immunology, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Carolina Medina-Montano
- Department
of Dermatology, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Joschka Bartneck
- III Department of Medicine - Hematology, Oncology, Pneumology, University Medical Center of the Johannes Gutenberg-University
Mainz, Langenbeckstraße
1, 55131 Mainz, Germany
| | - Tanja Ziß
- Institute
of Immunology, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Evelyn Montermann
- Department
of Dermatology, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Cinja Kappel
- Department
of Dermatology, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Dominika Hobernik
- Department
of Dermatology, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Maximilian Haist
- Department
of Dermatology, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Hajime Yurugi
- Cell
Biology Unit, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Marco Raabe
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Andreas Best
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Krishnaraj Rajalingam
- Cell
Biology Unit, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Markus P. Radsak
- III Department of Medicine - Hematology, Oncology, Pneumology, University Medical Center of the Johannes Gutenberg-University
Mainz, Langenbeckstraße
1, 55131 Mainz, Germany
| | - Sunil A. David
- ViroVax,
LLC, 2029 Becker Drive
Suite 100E, Lawrence 66047-1620, Kansas. United States
| | - Kaloian Koynov
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Matthias Bros
- Department
of Dermatology, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Stephan Grabbe
- Department
of Dermatology, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Hansjörg Schild
- Institute
of Immunology, University Medical Center
of Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
| | - Lutz Nuhn
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| |
Collapse
|
4
|
Scherger M, Räder HJ, Nuhn L. Self-Immolative RAFT-Polymer End Group Modification. Macromol Rapid Commun 2021; 42:e2000752. [PMID: 33629782 DOI: 10.1002/marc.202000752] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/28/2021] [Indexed: 11/07/2022]
Abstract
Reversible modifications of reversible addition-fragmentation chain transfer (RAFT)-polymerization derived end groups are usually limited to reductive degradable disulfide conjugates. However, self-immolative linkers can promote ligation and traceless release of primary and secondary amines as well as alcohols via carbonates or carbamates in β-position to disulfides. In this study, these two strategies are combined and the concept of self-immolative RAFT-polymer end group modifications is introduced: As model compounds, benzylamine, dibenzylamine, and benzyl alcohol are first attached as carbamates or carbonates to a symmetrical disulfide, and in a straightforward one-pot reaction these groups are reversibly attached to aminolyzed trithiocarbonate end groups of RAFT-polymerized poly(N,N-dimethylacrylamide). Quantitative end group modification is confirmed by 1 H NMR spectroscopy, size exclusion chromatography, and mass spectrometry, while reversible release of attached compounds under physiological reductive conditions is successfully monitored by diffusion ordered NMR spectroscopy and thin layer chromatography. Additionally, this concept is further expanded to protein-reactive, self-immolative carbonate species that enable reversible bioconjugation of lysozyme and α-macrophage mannose receptor (MMR) nanobodies as model proteins. Altogether, self-immolative RAFT end group modifications can form the new basis for reversible introduction of various functionalities to polymer chain ends including protein bioconjugates and, thus, opening novel opportunities for stimuli-responsive polymer hybrids.
Collapse
Affiliation(s)
- Maximilian Scherger
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany
| | - Hans Joachim Räder
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany
| | - Lutz Nuhn
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany
| |
Collapse
|
5
|
Transient Multivalent Nanobody Targeting to CD206-Expressing Cells via PH-Degradable Nanogels. Cells 2020; 9:cells9102222. [PMID: 33019594 PMCID: PMC7600184 DOI: 10.3390/cells9102222] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/23/2020] [Accepted: 09/27/2020] [Indexed: 02/07/2023] Open
Abstract
To target nanomedicines to specific cells, especially of the immune system, nanobodies can be considered as an attractive tool, as they lack the Fc part as compared to traditional antibodies and, thus, prevent unfavorable Fc-receptor mediated mistargeting. For that purpose, we have site-specifically conjugated CD206/MMR-targeting nanobodies to three types of dye-labeled nanogel derivatives: non-degradable nanogels, acid-degradable nanogels (with ketal crosslinks), and single polymer chains (also obtained after nanogel degradation). All of them can be obtained from the same reactive ester precursor block copolymer. After incubation with naïve or MMR-expressing Chinese hamster ovary (CHO) cells, a nanobody mediated targeting and uptake could be confirmed for the nanobody-modified nanocarriers. Thereby, the intact nanogels that display nanobodies on their surface in a multivalent way showed a much stronger binding and uptake compared to the soluble polymers. Based on their acidic pH-responsive degradation potential, ketal crosslinked nanogels are capable of mediating a transient targeting that gets diminished upon unfolding into single polymer chains after endosomal acidification. Such control over particle integrity and targeting performance can be considered as highly attractive for safe and controllable immunodrug delivery purposes.
Collapse
|
6
|
Characterizing the Core-Shell Architecture of Block Copolymer Nanoparticles with Electron Microscopy: A Multi-Technique Approach. Polymers (Basel) 2020; 12:polym12081656. [PMID: 32722462 PMCID: PMC7464915 DOI: 10.3390/polym12081656] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/16/2020] [Accepted: 07/17/2020] [Indexed: 12/31/2022] Open
Abstract
Electron microscopy has proved to be a major tool to study the structure of self-assembled amphiphilic block copolymer particles. These specimens, like supramolecular biological structures, are problematic for electron microscopy because of their poor capacity to scatter electrons and their susceptibility to radiation damage and dehydration. Sub-50 nm core-shell spherical particles made up of poly(hydroxyethyl acrylate)–b–poly(styrene) are prepared via polymerization-induced self-assembly (PISA). For their morphological characterization, we discuss the advantages, limitations, and artefacts of TEM with or without staining, cryo-TEM, and SEM. A number of technical points are addressed such as precisely shaping of particle boundaries, resolving the particle shell, differentiating particle core and shell, and the effect of sample drying and staining. TEM without staining and cryo-TEM largely evaluate the core diameter. Negative staining TEM is more efficient than positive staining TEM to preserve native structure and to visualize the entire particle volume. However, no technique allows for a satisfactory imaging of both core and shell regions. The presence of long protruding chains is manifested by patched structure in cryo-TEM and a significant edge effect in SEM. This manuscript provides a basis for polymer chemists to develop their own specimen preparations and to tackle the interpretation of challenging systems.
Collapse
|
7
|
|
8
|
Abstract
Introduction: The development of more efficacious vaccines, especially subunit vaccines administered via non-invasive routes, is a priority in vaccinology. Nanogels are materials that can meet the requirements to serve as efficient vaccine delivery vehicles (in terms of thermo-sensitivity, biocompatibility, and pH-responsiveness; among others); thus there is a growing interest in exploring the potential of nanogels for vaccine development. Areas covered: Herein, a critical analysis of nanogel synthesis methodologies is presented and nanogel-based vaccines under development are summarized and placed in perspective. Promising vaccine candidates based on nanogels have been reported for cancer, obesity, and infectious diseases (mainly respiratory diseases). Some of the candidates were administered by mucosal routes which are highly attractive in terms of simple administration and induction of protective responses at both mucosal and systemic levels. Expert opinion: The most advanced models of nanogel-based vaccines comprise candidates against cancer, based on cholesteryl pullulan nanogels evaluated in clinical trials with promising findings; as well as some vaccines against respiratory pathogens tested in mice thus far. Nonetheless, the challenge for this field is advancing in clinical trials and proving the protective potential in test animals for many other candidates. Implementing green synthesis approaches for nanogels is also required.
Collapse
|
9
|
Trimaille T, Lacroix C, Verrier B. Self-assembled amphiphilic copolymers as dual delivery system for immunotherapy. Eur J Pharm Biopharm 2019; 142:232-239. [PMID: 31229673 DOI: 10.1016/j.ejpb.2019.06.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 05/03/2019] [Accepted: 06/19/2019] [Indexed: 01/07/2023]
Abstract
Subunit vaccines using recombinant antigens appear as the privileged vaccination technology for safety reasons but still require the development of carriers/adjuvants ensuring optimal immunogenicity and efficacy. Micelles from self-assembled amphiphilic copolymers have recently emerged as highly relevant and promising candidates owing to their ease of preparation, low size (entering in lymphatic capillaries for reaching lymph nodes), size/surface tunability and chemical versatility enabling introduction of stimuli (e.g. pH) responsive features and biofunctionalization with dedicated molecules. In particular, research efforts have increasingly focused on dendritic cells (DCs) targeting and activation by co-delivering (with antigen) ligands of pattern recognition receptors (PRRs, e.g. toll-like receptors). Such strategy has appeared as one of the most effective for eliciting CD 8+ T-cell response, which is crucial in the eradication of tumors and numerous infectious diseases. In this short review, we highlight the recent advances in such micelle-based carriers in subunit vaccination and how their precise engineering can be a strong asset for guiding and controlling immune responses.
Collapse
Affiliation(s)
- Thomas Trimaille
- Aix Marseille Univ, CNRS, Institut de Chimie Radicalaire, Marseille, France.
| | - Céline Lacroix
- Université Lyon 1, CNRS, UMR 5305, Biologie Tissulaire et Ingénierie Thérapeutique, IBCP, 69367 Lyon, France
| | - Bernard Verrier
- Université Lyon 1, CNRS, UMR 5305, Biologie Tissulaire et Ingénierie Thérapeutique, IBCP, 69367 Lyon, France
| |
Collapse
|
10
|
Nuhn L, De Koker S, Van Lint S, Zhong Z, Catani JP, Combes F, Deswarte K, Li Y, Lambrecht BN, Lienenklaus S, Sanders NN, David SA, Tavernier J, De Geest BG. Nanoparticle-Conjugate TLR7/8 Agonist Localized Immunotherapy Provokes Safe Antitumoral Responses. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1803397. [PMID: 30276880 DOI: 10.1002/adma.201803397] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 08/20/2018] [Indexed: 05/17/2023]
Abstract
Localized therapeutic modalities that subvert the tumor microenvironment from immune-suppressive to pro-immunogenic can elicit systemic antitumor immune responses that induce regression of directly treated as well as nontreated distal tumors. A key toward generating robust antitumor T cell responses is the activation of dendritic cells (DCs) in the tumor microenvironment. Treatment with agonists triggering various pattern recognition receptors is very efficient to activate DCs, yet suffers from the induction of serious immune-related adverse effects, which is closely linked to their unfavorable PK/PD profile causing systemic immune activation and cytokine release. Here, it is reported that nanoparticle conjugation of a highly potent TLR7/8 agonist restricts immune activation to the tumor bed and its sentinel lymph nodes without hampering therapeutic antitumor efficacy. On a mechanistic level, it is confirmed that localized treatment with a nanoparticle-conjugated TLR7/8 agonist leads to potent activation of DCs in the sentinel lymph nodes and promotes proliferation of tumor antigen-specific CD8 T cells. Furthermore, therapeutic improvement upon combination with anti-PDL1 checkpoint inhibition and Flt3L, a growth factor that expands and mobilizes DCs from the bone marrow, is demonstrated. The findings provide a rational base for localized tumor engineering by nanomedicine strategies that provide spatial control over immune-activation.
Collapse
Affiliation(s)
- Lutz Nuhn
- Department of Pharmaceutics, Cancer Research Institute Ghent (CRIG), Ghent University, 9000, Ghent, Belgium
| | - Stefaan De Koker
- Cytokine Receptor Laboratory, Flanders Institute of Biotechnology, VIB-UGent Center for Medical Biotechnology, Faculty of Medicine and Health Sciences, Cancer Research Institute Ghent (CRIG), Ghent University, 9000, Ghent, Belgium
| | - Sandra Van Lint
- Cytokine Receptor Laboratory, Flanders Institute of Biotechnology, VIB-UGent Center for Medical Biotechnology, Faculty of Medicine and Health Sciences, Cancer Research Institute Ghent (CRIG), Ghent University, 9000, Ghent, Belgium
| | - Zifu Zhong
- Faculty of Veterinary Medicine, Department of Nutrition, Genetics, and Ethology, Laboratory of Gene Therapy, Cancer Research Institute (CRIG), Ghent University, 9820, Merelbeke, Belgium
| | - João Portela Catani
- Faculty of Veterinary Medicine, Department of Nutrition, Genetics, and Ethology, Laboratory of Gene Therapy, Cancer Research Institute (CRIG), Ghent University, 9820, Merelbeke, Belgium
| | - Francis Combes
- Faculty of Veterinary Medicine, Department of Nutrition, Genetics, and Ethology, Laboratory of Gene Therapy, Cancer Research Institute (CRIG), Ghent University, 9820, Merelbeke, Belgium
| | - Kim Deswarte
- VIB Center for Inflammation Research, Department of Respiratory Medicine, Ghent University, 9052, Ghent, Belgium
| | - Yupeng Li
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Bart N Lambrecht
- VIB Center for Inflammation Research, Department of Respiratory Medicine, Ghent University, 9052, Ghent, Belgium
- Department of Pulmonary Medicine, ErasmusMC, 3015, GD, Rotterdam, The Netherlands
| | - Stefan Lienenklaus
- Institute for Laboratory Animal Science, Hanover Medical School, Hanover, Germany
- Institute of Immunology, Hanover Medical School, Hanover, Germany
| | - Niek N Sanders
- Faculty of Veterinary Medicine, Department of Nutrition, Genetics, and Ethology, Laboratory of Gene Therapy, Cancer Research Institute (CRIG), Ghent University, 9820, Merelbeke, Belgium
| | - Sunil A David
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Jan Tavernier
- Cytokine Receptor Laboratory, Flanders Institute of Biotechnology, VIB-UGent Center for Medical Biotechnology, Faculty of Medicine and Health Sciences, Cancer Research Institute Ghent (CRIG), Ghent University, 9000, Ghent, Belgium
| | - Bruno G De Geest
- Department of Pharmaceutics, Cancer Research Institute Ghent (CRIG), Ghent University, 9000, Ghent, Belgium
| |
Collapse
|
11
|
Nuhn L, Van Herck S, Best A, Deswarte K, Kokkinopoulou M, Lieberwirth I, Koynov K, Lambrecht BN, De Geest BG. FRET Monitoring of Intracellular Ketal Hydrolysis in Synthetic Nanoparticles. Angew Chem Int Ed Engl 2018; 57:10760-10764. [DOI: 10.1002/anie.201803847] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Lutz Nuhn
- Department of PharmaceuticsGhent University Belgium
- Max-Planck-Institute for Polymer Research Mainz Germany
| | | | - Andreas Best
- Max-Planck-Institute for Polymer Research Mainz Germany
| | - Kim Deswarte
- IRC-VIB, Zwijnaarde, and Department of Respiratory MedicineGhent University Belgium
| | | | | | | | - Bart N. Lambrecht
- IRC-VIB, Zwijnaarde, and Department of Respiratory MedicineGhent University Belgium
| | | |
Collapse
|
12
|
Nuhn L, Van Herck S, Best A, Deswarte K, Kokkinopoulou M, Lieberwirth I, Koynov K, Lambrecht BN, De Geest BG. Förster‐Resonanzenergietransfer‐basierter Nachweis intrazellulärer Ketal‐Hydrolyse in synthetisch vernetzten Nanopartikeln. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803847] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lutz Nuhn
- Faculteit Farmaceutische WetenschappenUniversiteit Gent Belgien
- Max-Planck-Institut für Polymerforschung Mainz Deutschland
| | - Simon Van Herck
- Faculteit Farmaceutische WetenschappenUniversiteit Gent Belgien
| | - Andreas Best
- Max-Planck-Institut für Polymerforschung Mainz Deutschland
| | - Kim Deswarte
- IRC-VIB, Zwijnaarde, und Faculteit Geneeskunde en, GezondheidswetenschappenUniversiteit Gent Belgien
| | | | | | - Kaloian Koynov
- Max-Planck-Institut für Polymerforschung Mainz Deutschland
| | - Bart N. Lambrecht
- IRC-VIB, Zwijnaarde, und Faculteit Geneeskunde en, GezondheidswetenschappenUniversiteit Gent Belgien
| | | |
Collapse
|
13
|
Couturaud B, Georgiou PG, Varlas S, Jones JR, Arno MC, Foster JC, O'Reilly RK. Poly(Pentafluorophenyl Methacrylate)-Based Nano-Objects Developed by Photo-PISA as Scaffolds for Post-Polymerization Functionalization. Macromol Rapid Commun 2018; 40:e1800460. [PMID: 30062711 DOI: 10.1002/marc.201800460] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 06/29/2018] [Indexed: 02/04/2023]
Abstract
The preparation of a functional fluorine-containing block copolymer using reversible addition-fragmentation chain-transfer dispersion polymerization in DMSO as a "platform/scaffold" is explored. The nanostructures, comprised of poly(ethyleneglycol)-b-poly(pentafluorophenyl methacrylate) or PEG-b-P(PFMA), are formulated via photo-initiated polymerization-induced self-assembly (PISA) followed by post-polymerization modification using different primary amines. A combination of light scattering and microscopy techniques are used to characterize the resulting morphologies. It is found that upon varying the degree of polymerization of the core-forming block of PFMA, only uniform spheres (with textured surfaces) are obtained. These nanostructures are subsequently modified by cross-linking using a non-responsive and a redox-responsive diamine, thus imparting stability to the particles in water. In response to intracellular glutathione (GSH) concentration, destabilization of the micelles occurs as evidenced by dynamic light scattering. The well-defined size, inherent reactivity of the nanoparticles toward nucleophiles, and GSH-responsiveness of the nanospheres make them ideal scaffolds for drug delivery to intracellular compartments with reductive environments.
Collapse
Affiliation(s)
- Benoit Couturaud
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, Birmingham, UK
| | - Panagiotis G Georgiou
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, Birmingham, UK.,Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK
| | - Spyridon Varlas
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, Birmingham, UK
| | - Joseph R Jones
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, Birmingham, UK
| | - Maria C Arno
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, Birmingham, UK
| | - Jeffrey C Foster
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, Birmingham, UK
| | - Rachel K O'Reilly
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT, Birmingham, UK
| |
Collapse
|
14
|
Nuhn L, Bolli E, Massa S, Vandenberghe I, Movahedi K, Devreese B, Van Ginderachter JA, De Geest BG. Targeting Protumoral Tumor-Associated Macrophages with Nanobody-Functionalized Nanogels through Strain Promoted Azide Alkyne Cycloaddition Ligation. Bioconjug Chem 2018; 29:2394-2405. [PMID: 29889515 DOI: 10.1021/acs.bioconjchem.8b00319] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Tumor-associated macrophages (TAMs) with high expression levels of the Macrophage Mannose Receptor (MMR, CD206) exhibit a strong angiogenic and immune suppressive activity. Thus, they are a highly attractive target in cancer immunotherapy, with the aim to modulate their protumoral behavior. Here, we introduce polymer nanogels as potential drug nanocarriers which were site-specifically decorated with a Nanobody (Nb) specific for the MMR. Using azide-functionalized RAFT chain transfer agents, they provide access to amphiphilic reactive ester block copolymers that self-assemble into micelles and are afterwards core-cross-linked toward fully hydrophilic nanogels with terminal azide groups on their surface. MMR-targeting Nb can site-selectively be functionalized with one single cyclooctyne moiety by maleimide-cysteine chemistry under mildly reducing conditions which enables successful chemoorthogonal conjugation to the nanogels. The resulting Nb-functionalized nanogels were highly efficient in targeting MMR-expressing cells and TAMs both in vitro and in vivo. We believe that these findings pave the road for targeted eradication or modulation of pro-tumoral MMRhigh TAMs.
Collapse
Affiliation(s)
- Lutz Nuhn
- Department of Pharmaceutics , Ghent University , Ottergemsesteenweg 460 , 9000 Ghent , Belgium.,Cancer Research Institute Ghent (CRIG) , Ghent University , Ottergemsesteenweg 460 , 9000 Ghent , Belgium.,Max-Planck-Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany
| | - Evangelia Bolli
- Myeloid Cell Immunology Lab , VIB Center for Inflammation Research , Pleinlaan 2 , 1050 Brussels , Belgium.,Lab of Cellular and Molecular Immunology , Vrije Universiteit Brussel , Pleinlaan 2 , 1050 Brussels , Belgium
| | - Sam Massa
- Myeloid Cell Immunology Lab , VIB Center for Inflammation Research , Pleinlaan 2 , 1050 Brussels , Belgium.,Lab of Cellular and Molecular Immunology , Vrije Universiteit Brussel , Pleinlaan 2 , 1050 Brussels , Belgium
| | - Isabel Vandenberghe
- Department of Biochemistry and Microbiology , Ghent University , K. L. Ledeganckstraat 35 , 9000 Ghent , Belgium
| | - Kiavash Movahedi
- Myeloid Cell Immunology Lab , VIB Center for Inflammation Research , Pleinlaan 2 , 1050 Brussels , Belgium.,Lab of Cellular and Molecular Immunology , Vrije Universiteit Brussel , Pleinlaan 2 , 1050 Brussels , Belgium
| | - Bart Devreese
- Department of Biochemistry and Microbiology , Ghent University , K. L. Ledeganckstraat 35 , 9000 Ghent , Belgium
| | - Jo A Van Ginderachter
- Myeloid Cell Immunology Lab , VIB Center for Inflammation Research , Pleinlaan 2 , 1050 Brussels , Belgium.,Lab of Cellular and Molecular Immunology , Vrije Universiteit Brussel , Pleinlaan 2 , 1050 Brussels , Belgium
| | - Bruno G De Geest
- Department of Pharmaceutics , Ghent University , Ottergemsesteenweg 460 , 9000 Ghent , Belgium.,Cancer Research Institute Ghent (CRIG) , Ghent University , Ottergemsesteenweg 460 , 9000 Ghent , Belgium
| |
Collapse
|
15
|
Affiliation(s)
- Rudolf Zentel
- Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, D-55099 Mainz, Germany
| |
Collapse
|