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Parcero-Bouzas S, Correa J, Jimenez-Lopez C, Delgado Gonzalez B, Fernandez-Megia E. Modular Synthesis of PEG-Dendritic Block Copolymers by Thermal Azide-Alkyne Cycloaddition with Internal Alkynes and Evaluation of their Self-Assembly for Drug Delivery Applications. Biomacromolecules 2024; 25:2780-2791. [PMID: 38613487 PMCID: PMC11094729 DOI: 10.1021/acs.biomac.3c01429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 04/03/2024] [Accepted: 04/03/2024] [Indexed: 04/15/2024]
Abstract
Linear-dendritic block copolymers assemble in solution due to differences in the solubility or charge properties of the blocks. The monodispersity and multivalency of the dendritic block provide unparalleled control for the design of drug delivery systems when incorporating poly(ethylene glycol) (PEG) as a linear block. An accelerated synthesis of PEG-dendritic block copolymers based on the click and green chemistry pillars is described. The tandem composed of the thermal azide-alkyne cycloaddition with internal alkynes and azide substitution is revealed as a flexible, reliable, atom-economical, and user-friendly strategy for the synthesis and functionalization of biodegradable (polyester) PEG-dendritic block copolymers. The high orthogonality of the sequence has been exploited for the preparation of heterolayered copolymers with terminal alkenes and alkynes, which are amenable for subsequent functionalization by thiol-ene and thiol-yne click reactions. Copolymers with tunable solubility and charge were so obtained for the preparation of various types of nanoassemblies with promising applications in drug delivery.
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Affiliation(s)
- Samuel Parcero-Bouzas
- Centro Singular de Investigación
en Química Biolóxica e Materiais Moleculares (CIQUS),
Departamento de Química Orgánica, Universidade de Santiago de Compostela, Jenaro de la Fuente s/n, Santiago de Compostela 15782, Spain
| | - Juan Correa
- Centro Singular de Investigación
en Química Biolóxica e Materiais Moleculares (CIQUS),
Departamento de Química Orgánica, Universidade de Santiago de Compostela, Jenaro de la Fuente s/n, Santiago de Compostela 15782, Spain
| | - Celia Jimenez-Lopez
- Centro Singular de Investigación
en Química Biolóxica e Materiais Moleculares (CIQUS),
Departamento de Química Orgánica, Universidade de Santiago de Compostela, Jenaro de la Fuente s/n, Santiago de Compostela 15782, Spain
| | - Bruno Delgado Gonzalez
- Centro Singular de Investigación
en Química Biolóxica e Materiais Moleculares (CIQUS),
Departamento de Química Orgánica, Universidade de Santiago de Compostela, Jenaro de la Fuente s/n, Santiago de Compostela 15782, Spain
| | - Eduardo Fernandez-Megia
- Centro Singular de Investigación
en Química Biolóxica e Materiais Moleculares (CIQUS),
Departamento de Química Orgánica, Universidade de Santiago de Compostela, Jenaro de la Fuente s/n, Santiago de Compostela 15782, Spain
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Yon M, Esmangard L, Enel M, Desmoulin F, Pestourie C, Leygue N, Mingotaud C, Galaup C, Marty JD. Simple hybrid polymeric nanostructures encapsulating macro-cyclic Gd/Eu based complexes: luminescence properties and application as MRI contrast agent. NANOSCALE 2024; 16:3729-3737. [PMID: 38294340 DOI: 10.1039/d3nr06162k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Lanthanide-based macrocycles are successfully incorporated into hybrid polyionic complexes, formed by adding a mixture of zirconium ions to a solution of a double-hydrophilic block copolymer. The resulting nanoobjects with an average radius of approximately 10-15 nm present good colloidal and chemical stability in physiological media even in the presence of competing ions such as phosphate or calcium ions. The final optical and magnetic properties of these objects benefit from both their colloidal nature and the specific properties of the complexes. Hence these new nanocarriers exhibit enhanced T1 MRI contrast, when administered intravenously to mice.
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Affiliation(s)
- Marjorie Yon
- Laboratoire Softmat, University of Toulouse, CNRS UMR 5623, University Toulouse III - Paul Sabatier, France, 118, route de Narbonne, 31062 Toulouse Cedex 9, France.
| | - Lucie Esmangard
- Laboratoire Softmat, University of Toulouse, CNRS UMR 5623, University Toulouse III - Paul Sabatier, France, 118, route de Narbonne, 31062 Toulouse Cedex 9, France.
| | - Morgane Enel
- Laboratoire SPCMIB, CNRS UMR 5068, University of Toulouse, University Toulouse III - Paul Sabatier 118, route de Narbonne 31062, Toulouse Cedex 9, France.
| | - Franck Desmoulin
- Toulouse NeuroImaging Center (ToNIC), Inserm, University of Toulouse - Paul Sabatier, Toulouse, France
- CREFRE-Anexplo, University of Toulouse, Inserm, UT3, ENVT, Toulouse, France
| | - Carine Pestourie
- CREFRE-Anexplo, University of Toulouse, Inserm, UT3, ENVT, Toulouse, France
| | - Nadine Leygue
- Laboratoire SPCMIB, CNRS UMR 5068, University of Toulouse, University Toulouse III - Paul Sabatier 118, route de Narbonne 31062, Toulouse Cedex 9, France.
| | - Christophe Mingotaud
- Laboratoire Softmat, University of Toulouse, CNRS UMR 5623, University Toulouse III - Paul Sabatier, France, 118, route de Narbonne, 31062 Toulouse Cedex 9, France.
| | - Chantal Galaup
- Laboratoire SPCMIB, CNRS UMR 5068, University of Toulouse, University Toulouse III - Paul Sabatier 118, route de Narbonne 31062, Toulouse Cedex 9, France.
| | - Jean-Daniel Marty
- Laboratoire Softmat, University of Toulouse, CNRS UMR 5623, University Toulouse III - Paul Sabatier, France, 118, route de Narbonne, 31062 Toulouse Cedex 9, France.
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Peng L, Gineste S, Coudret C, Ciuculescu-Pradines D, Benoît-Marquié F, Mingotaud C, Marty JD. Iron-based hybrid polyionic complexes as chemical reservoirs for the pH-triggered synthesis of Prussian blue nanoparticles. J Colloid Interface Sci 2023; 649:900-908. [PMID: 37390537 DOI: 10.1016/j.jcis.2023.06.136] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/01/2023] [Accepted: 06/19/2023] [Indexed: 07/02/2023]
Abstract
HYPOTHESIS Hybrid polyion complexes (HPICs) obtained from the complexation in aqueous solution of a double hydrophilic block copolymer and metal ions can act as efficient precursors for the controlled synthesis of nanoparticles. In particular, the possibility to control the availability of metal ions by playing on the pH conditions is of special interest to obtain nanoparticles with controlled size and composition. EXPERIMENTS HPICs based on Fe3+ ions were used to initiate the formation of Prussian blue (PB) nanoparticles in presence of potassium ferrocyanide in reaction media with varying pH values. FINDINGS Complexed Fe3+ ions within HPICs can be easily released by adjusting the pH value either through the addition of a base/acid or by using a merocyanine photoacid. This allows to modulate the reactivity of Fe3+ ions with potassium ferrocyanide present in solution. As a result, PB nanoparticles with different structures (core, core-shell), composition and controlled size are obtained.
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Affiliation(s)
- Liming Peng
- Laboratoire des IMRCP, CNRS UMR 5623, University of Toulouse, Université Toulouse III - Paul Sabatier 118, route de Narbonne, 31062 Toulouse Cedex 9, France
| | - Stéphane Gineste
- Laboratoire des IMRCP, CNRS UMR 5623, University of Toulouse, Université Toulouse III - Paul Sabatier 118, route de Narbonne, 31062 Toulouse Cedex 9, France
| | - Christophe Coudret
- Laboratoire des IMRCP, CNRS UMR 5623, University of Toulouse, Université Toulouse III - Paul Sabatier 118, route de Narbonne, 31062 Toulouse Cedex 9, France
| | - Diana Ciuculescu-Pradines
- Laboratoire des IMRCP, CNRS UMR 5623, University of Toulouse, Université Toulouse III - Paul Sabatier 118, route de Narbonne, 31062 Toulouse Cedex 9, France
| | - Florence Benoît-Marquié
- Laboratoire des IMRCP, CNRS UMR 5623, University of Toulouse, Université Toulouse III - Paul Sabatier 118, route de Narbonne, 31062 Toulouse Cedex 9, France
| | - Christophe Mingotaud
- Laboratoire des IMRCP, CNRS UMR 5623, University of Toulouse, Université Toulouse III - Paul Sabatier 118, route de Narbonne, 31062 Toulouse Cedex 9, France.
| | - Jean-Daniel Marty
- Laboratoire des IMRCP, CNRS UMR 5623, University of Toulouse, Université Toulouse III - Paul Sabatier 118, route de Narbonne, 31062 Toulouse Cedex 9, France.
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Odnoroh M, Coutelier O, Mingotaud C, Destarac M, Marty JD. Diblock versus block-random copolymer architecture effect on physical properties of Gd 3+-based hybrid polyionic complexes. J Colloid Interface Sci 2023; 649:655-664. [PMID: 37369167 DOI: 10.1016/j.jcis.2023.06.116] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/09/2023] [Accepted: 06/17/2023] [Indexed: 06/29/2023]
Abstract
HYPOTHESIS Random insertion of vinylphosphonic acid (VPA) units into a of PEG-PAA block copolymer improves the chemical stability and properties of hybrid nanoobjects obtained from the complexation of the copolymer with metal ions. EXPERIMENTS Block polymers based on poly(acrylic acid) (PAA) and poly(ethylene glycol) (PEG) are modified by random insertion of 0 to 100 % of phosphonic acid functions in PAA block by a RAFT polymerization process. These polymers are then used to form hybrid polyionic complexes (HPICs) by complexation with gadolinium or europium ions. The properties of the obtained assemblies are evaluated by magnetic relaxivity, fluorescence and light scattering measurements. FINDINGS The insertion of VPA units within the PAA block increases the chemical stability of the hybrid micelles by maintaining their integrity even at low pH. This insertion also minimizes the exchange of ions between HPICs and the surrounding medium thanks to a strengthening of interactions toward lanthanide ions. When such systems are used as MRI contrast agents or luminescent probe, 50/50 AA/VPA composition appears to be a good compromise to achieve optimal relaxivity or luminescent properties while ensuring a good chemical stability.
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Affiliation(s)
- Maksym Odnoroh
- Laboratoire des IMRCP, CNRS UMR 5623, University of Toulouse, Université Toulouse III - Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse, France
| | - Olivier Coutelier
- Laboratoire des IMRCP, CNRS UMR 5623, University of Toulouse, Université Toulouse III - Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse, France
| | - Christophe Mingotaud
- Laboratoire des IMRCP, CNRS UMR 5623, University of Toulouse, Université Toulouse III - Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse, France
| | - Mathias Destarac
- Laboratoire des IMRCP, CNRS UMR 5623, University of Toulouse, Université Toulouse III - Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse, France.
| | - Jean-Daniel Marty
- Laboratoire des IMRCP, CNRS UMR 5623, University of Toulouse, Université Toulouse III - Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse, France.
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