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Su DD, Gervais V, Ulrich S, Barboiu M. Complexation Preferences of Dynamic Constitutional Frameworks as Adaptive Gene Vectors. Chemistry 2023; 29:e202203062. [PMID: 36345945 PMCID: PMC10108089 DOI: 10.1002/chem.202203062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 11/10/2022]
Abstract
The growing applications of therapeutic nucleic acids requires the concomitant development of vectors that are optimized to complex one type of nucleic acid, forming nanoparticles suitable for further trafficking and delivery. While fine-tuning a vector by molecular engineering to obtain a particular nanoscale organization at the nanoparticle level can be a challenging endeavor, we turned the situation around and instead screened the complexation preferences of dynamic constitutional frameworks toward different types of DNAs. Dynamic constitutional frameworks (DCF) are recently-identified vectors by our group that can be prepared in a versatile manner through dynamic covalent chemistry. Herein, we designed and synthesized 40 new DCFs that vary in hydrophilic/hydrophobic balance, number of cationic headgroups. The results of DNA complexation obtained through gel electrophoresis and fluorescent displacement assays reveal binding preferences of different DCFs toward different DNAs. The formation of compact spherical architectures with an optimal diameter of 100-200 nm suggests that condensation into nanoparticles is more effective for longer PEG chains and PEI groups that induce a better binding performance in the presence of DNA targets.
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Affiliation(s)
- Dan-Dan Su
- Institut Européen des Membranes, Adaptive Supramolecular Nanosystems Group, University of Montpellier, ENSCM-CNRS, Place E. Bataillon CC047, Montpellier, 34095, France.,Institut des Biomolécules Max Mousseron (IBMM), Université de Montpellier, CNRS, ENSCM, 34095, Montpellier, France
| | - Virginie Gervais
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France
| | - Sébastien Ulrich
- Institut des Biomolécules Max Mousseron (IBMM), Université de Montpellier, CNRS, ENSCM, 34095, Montpellier, France
| | - Mihail Barboiu
- Institut Européen des Membranes, Adaptive Supramolecular Nanosystems Group, University of Montpellier, ENSCM-CNRS, Place E. Bataillon CC047, Montpellier, 34095, France
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Fluorescent Dynamic Covalent Polymers for DNA Complexation and Templated Assembly. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27196648. [PMID: 36235185 PMCID: PMC9570939 DOI: 10.3390/molecules27196648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/08/2022] [Accepted: 10/02/2022] [Indexed: 11/06/2022]
Abstract
Dynamic covalent polymers (DCPs) offer opportunities as adaptive materials of particular interest for targeting, sensing and delivery of biological molecules. In this view, combining cationic units and fluorescent units along DCP chains is attractive for achieving optical probes for the recognition and delivery of nucleic acids. Here, we report on the design of acylhydrazone-based DCPs combining cationic arginine units with π-conjugated fluorescent moieties based on thiophene-ethynyl-fluorene cores. Two types of fluorescent building blocks bearing neutral or cationic side groups on the fluorene moiety are considered in order to assess the role of the number of cationic units on complexation with DNA. The (chir)optical properties of the building blocks, the DCPs, and their complexes with several types of DNA are explored, providing details on the formation of supramolecular complexes and on their stability in aqueous solutions. The DNA-templated formation of DCPs is demonstrated, which provides new perspectives on the assembly of fluorescent DCP based on the nucleic acid structure.
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Diaconu A, Coenye T, Barboiu M, Vincent SP. Dynamic Constitutional Frameworks as Antibacterial and Antibiofilm Agents. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Andrei Diaconu
- Faculty of Science University of Namur Rue de Bruxelles 61 Namur Belgium
- Center of Advanced Research in Bionanoconjugates and Biopolymers Petru Poni' Institute of Macromolecular Chemistry of Romanian Academy 41A, Aleea Gr. Ghica Voda Iasi Romania
| | - Tom Coenye
- LPM Laboratory of Pharmaceutical Microbiology Ghent University Ottergemsesteenweg 460 9000 Ghent Belgium
| | - Mihail Barboiu
- Institut Européen des Membranes University of Montpellier ENSCM CNRS Place Eugène Bataillon, CC 047 34095 Montpellier France
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Diaconu A, Coenye T, Barboiu M, Vincent SP. Dynamic Constitutional Frameworks as Antibacterial and Antibiofilm Agents. Angew Chem Int Ed Engl 2021; 60:22505-22512. [PMID: 34346553 DOI: 10.1002/anie.202109518] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Indexed: 12/21/2022]
Abstract
Dynamic constitutional frameworks (DCFs) were synthesized and screened for biofilm inhibition or disruption. They are composed of a trialdehyde core reversibly linked to a diamine PEG connector and to a variety of neutral, anionic, or cationic heads, to generate a library of DCFs to generate multivalent dendritic architectures in the presence of Pseudomonas aeruginosa and Staphylococcus aureus. The best DCFs were always polycationic and the nature of the cationic heads significantly impact the antibiofilm activity. The best antibiofilm activity was observed for DCF3B, displaying a polyethyleneimine head. A simple inactive guanidinium functional head strongly inhibited biofilm growth when assayed as a multivalent DCF3C. Using a more advanced in vitro biofilm model of chronic wound infection, DCF3C was found significantly superior than all other DCFs. These results demonstrate the versatility and effectiveness of DCFs as low cost and efficient systems for antibiofilm disruption.
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Affiliation(s)
- Andrei Diaconu
- Faculty of Science, University of Namur, Rue de Bruxelles, 61, Namur, Belgium
- Center of Advanced Research in Bionanoconjugates and Biopolymers, Petru Poni' Institute of Macromolecular Chemistry of Romanian Academy, 41A, Aleea Gr. Ghica Voda, Iasi, Romania
| | - Tom Coenye
- LPM Laboratory of Pharmaceutical Microbiology, Ghent University, Ottergemsesteenweg 460, 9000, Ghent, Belgium
| | - Mihail Barboiu
- Institut Européen des Membranes, University of Montpellier, ENSCM, CNRS, Place Eugène Bataillon, CC 047, 34095, Montpellier, France
| | - Stéphane P Vincent
- Faculty of Science, University of Namur, Rue de Bruxelles, 61, Namur, Belgium
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Su D, Zhang Y, Ulrich S, Barboiu M. Constitutional Dynamic Inhibition/Activation of Carbonic Anhydrases. Chempluschem 2021; 86:1500-1510. [PMID: 34327867 DOI: 10.1002/cplu.202100263] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/14/2021] [Indexed: 12/23/2022]
Abstract
In this review we consider one important member of the metalloenzymes family, the carbonic anhydrase (CA), involved in the treatment of several common diseases. Different approaches have emerged to regulate the activity of CA, mostly acting on the inner catalytic active site or outer microenvironment of the enzyme, leading to inhibition or activation of CA. In recent years, gradually increased attention has focused on the adoption of constitutional dynamic chemistry (CDC) strategies for the screening and discovery of potent inhibitors or activators. The participation of reversible covalent bonds enabled the enzyme itself to select the optimal ligands obtained from diverse building blocks with comparatively higher degree of variety, resulting in the fittest recognition of enzyme ligands from complex dynamic systems. With the increasing implementation of CDC for enzyme targets, it shows great potential for drug discovery or CO2 capture applications.
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Affiliation(s)
- Dandan Su
- Institut Europeen des Membranes, Adaptive Supramolecular Nanosystems Group, University of Montpellier, ENSCM-CNRS, Place E. Bataillon CC047, 34095, Montpellier, France
- Institut des Biomolécules Max Mousseron (IBMM), CNRS, Université de Montpellier, ENSCM, Montpellier, France
| | - Yan Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, 1800 Lihu Avenue, Wuxi, 214122, P. R. China
| | - Sébastien Ulrich
- Institut des Biomolécules Max Mousseron (IBMM), CNRS, Université de Montpellier, ENSCM, Montpellier, France
| | - Mihail Barboiu
- Institut Europeen des Membranes, Adaptive Supramolecular Nanosystems Group, University of Montpellier, ENSCM-CNRS, Place E. Bataillon CC047, 34095, Montpellier, France
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Pegylation of phenothiazine – A synthetic route towards potent anticancer drugs. J Adv Res 2021; 37:279-290. [PMID: 35499049 PMCID: PMC9040145 DOI: 10.1016/j.jare.2021.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 07/01/2021] [Accepted: 07/06/2021] [Indexed: 11/22/2022] Open
Abstract
Antitumor activity of two PEGylated phenotiazines was investigated The compounds showed cytotoxic activity against six tumor lines They inhibited the tumor growth in experimental mice The PEGylation improved the phenothiazine biocompatibility A synergistic effect of PEG and phenothiazine toward properties improvement was proved
Introduction Cancer is a big challenge of the 21 century, whose defeat requires efficient antitumor drugs. Objectives The paper aims to investigate the synergistic effect of two structural building blocks, phenothiazine and poly(ethylene glycol), towards efficient antitumor drugs. Methods Two PEGylated phenothiazine derivatives were synthetized by attaching poly(ethylene glycol) of 550 Da to the nitrogen atom of phenothiazine by ether or ester linkage. Their antitumor activity has been investigated on five human tumour lines and a mouse tumor line as well, by determination of IC50. The in vivo toxicity was determined by measuring the LD50 in BALB/c mice by the sequential method and the in vivo antitumor potential was measured by the tumours growth test. The antitumor mechanism was investigated by complexation studies of zinc and magnesium ions characteristic to the farnesyltransferase enzyme, by studies of self-aggregation in the cells proximity and by investigation of the antitumor properties of the acid species resulted by enzymatic cleavage of the PEGylated derivatives. Results The two compounds showed antitumor activity, with IC50 against mouse colon carcinoma cell line comparable with that of the traditional antitumor drugs 5-Fluorouracil and doxorubicin. The phenothiazine PEGylation resulted in a significant toxicity diminishing, the LD50 in BALB/c mice increasing from 952.38 up to 1450 mg/kg, in phenothiazine equivalents. Both compounds inflicted a 92% inhibition of the tumour growth for doses much smaller than LD50. The investigation of the possible tumour inhibition mechanism suggested the nanoaggregate formation and the cleavage of ester bonds as key factors for the inhibition of cancer cell proliferation and biocompatibility improvement. Conclusion Phenothiazine and PEG building blocks have a synergetic effect working for both tumour growth inhibition and biocompatibility improvement. All these findings recommend the PEGylated phenothiazine derivatives as a valuable workbench for a next generation of antitumor drugs.
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Dynamic imine bond based chitosan smart hydrogel with magnified mechanical strength for controlled drug delivery. Int J Biol Macromol 2020; 160:489-495. [DOI: 10.1016/j.ijbiomac.2020.05.221] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 05/11/2020] [Accepted: 05/26/2020] [Indexed: 11/22/2022]
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Cibotaru S, Sandu AI, Belei D, Marin L. Water soluble PEGylated phenothiazines as valuable building blocks for bio-materials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 116:111216. [PMID: 32806288 DOI: 10.1016/j.msec.2020.111216] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 05/21/2020] [Accepted: 06/18/2020] [Indexed: 10/24/2022]
Abstract
The paper reports a series of three new PEGylated phenothiazine derivatives which keep the potential of valuable building blocks for preparing eco-materials addressed to a large realm of fields, from bio-medicine to opto-electronics. They were synthetized by connecting the hydrophilic poly(ethylene glycol) to the hydrophobic phenothiazine via an ether, ester, or amide linking group. The successful synthesis of the targeted polymers and their purity were demonstrated by NMR and FTIR spectroscopy methods. Their capacity to self-assembly in water was studied by DLS and UV-vis techniques and the particularities of the formed aggregates were investigated by fluorescence spectroscopy, SEM, AFM, POM and UV light microscopy. The biocompatibility was assessed on normal human dermal fibroblasts and human cervical cancer cells. The synthetized compounds showed the formation of luminescent aggregates and proved excellent biocompatibility on normal cells. In addition, a concentration dependent cytotoxicity against HeLa cancer cells was noticed for the PEGylated phenothiazine containing an ester unit.
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Affiliation(s)
- Sandu Cibotaru
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania
| | - Andreea-Isabela Sandu
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania
| | - Dalila Belei
- "Alexandru Ioan Cuza" University, Department of Organic Chemistry, Iasi, Romania
| | - Luminita Marin
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania.
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Zhang Y, Qi Y, Ulrich S, Barboiu M, Ramström O. Dynamic Covalent Polymers for Biomedical Applications. MATERIALS CHEMISTRY FRONTIERS 2020; 4:489-506. [PMID: 33791102 PMCID: PMC8009197 DOI: 10.1039/c9qm00598f] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The rapid development of supramolecular polymer chemistry and constitutional dynamic chemistry over the last decades has made tremendous impact on the emergence of dynamic covalent polymers. These materials are formed through reversible covalent bonds, endowing them with adaptive and responsive features that have resulted in high interest throughout the community. Owing to their intriguing properties, such as self-healing, shape-memory effects, recyclability, degradability, stimuli-responsiveness, etc., the materials have found multiple uses in a wide range of areas. Of special interest is their increasing use for biomedical applications, and many examples have been demonstrated in recent years. These materials have thus been used for the recognition and sensing of biologically active compounds, for the modulation of enzyme activity, for gene delivery, and as materials for cell culture, delivery, and wound-dressing. In this review, some of these endeavors are discussed, highlighting the many advantages and unique properties of dynamic covalent polymers for use in biology and biomedicine.
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Affiliation(s)
- Yan Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, P.R. China
| | - Yunchuan Qi
- Department of Chemistry, University of Massachusetts Lowell, One University Ave. Lowell, MA 01854, USA
| | - Sébastien Ulrich
- Institut des Biomolécules Max Mousseron (IBMM), CNRS, Université of Montpellier, ENSCM, Montpellier, France
| | - Mihail Barboiu
- Institut Européen des Membranes, Adaptive Supramolecular Nanosystems Group, University of Montpellier, ENSCM, CNRS, Place Eugène Bataillon, CC 047, F-34095, Montpellier, France
| | - Olof Ramström
- Department of Chemistry, University of Massachusetts Lowell, One University Ave. Lowell, MA 01854, USA
- Department of Chemical and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden
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Su D, Coste M, Diaconu A, Barboiu M, Ulrich S. Cationic dynamic covalent polymers for gene transfection. J Mater Chem B 2020; 8:9385-9403. [DOI: 10.1039/d0tb01836h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Dynamic covalent polymers have revealed strong potential in gene delivery, thanks to their versatile self-assembly, adaptive and responsive behaviors.
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Affiliation(s)
- Dandan Su
- Institut Européen des Membranes
- Adaptive Supramolecular Nanosystems Group
- University of Montpellier
- ENSCM
- CNRS
| | - Maëva Coste
- Institut des Biomolécules Max Mousseron (IBMM)
- CNRS
- Université of Montpellier
- ENSCM
- Montpellier
| | - Andrei Diaconu
- Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy
- Iasi
- Romania
| | - Mihail Barboiu
- Institut Européen des Membranes
- Adaptive Supramolecular Nanosystems Group
- University of Montpellier
- ENSCM
- CNRS
| | - Sébastien Ulrich
- Institut des Biomolécules Max Mousseron (IBMM)
- CNRS
- Université of Montpellier
- ENSCM
- Montpellier
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Abstract
Delivery remains a major obstacle restricting the potential action of small molecular drugs as well as novel biologics which cannot readily enter cells without the help of a vector. A successful active delivery process involves three steps: (a) tagging the drug with a vector, (b) effective trafficking of this [drug-vector] conjugate through biological barriers, and finally (c) controlled drug release. While covalent bond formation and/or supramolecular association is involved in the making of the [drug-vector] conjugate, the final step requires precisely a controlled dissociation in order to trigger drug release. Therefore, in pursuit of smart, effective, and nontoxic delivery systems, it has become widely recognized that control over dynamic self-assembly could unleash the efficacy of artificial vectors. In this Account, I discuss our endeavors, and those of colleagues, in the recent implementation of Dynamic Covalent Chemistry (DCvC) in delivery applications. DCvC exploits reversible covalent reactions to generate covalent systems that can self-fabricate, adapt, respond, and fall apart in a controlled fashion. A privileged set of reversible covalent reactions has emerged in the community working on delivery applications and is based on condensation reactions (imine, acylhydrazone, oxime), and disulfide and boronate ester formations. The latest developments making this chemistry particularly attractive for such a DCvC approach are discussed. The rational justifying the potential of DCvC in delivery is based on the principle that using such reversible covalent reactions afford transient [drug-vector] conjugates which form spontaneously and chemoselectively, then adapt and self-correct their structure during self-assembly and trafficking thanks to the dynamic nature of the reversible covalent bonds, and finally respond to physicochemical stimuli such as pH and redox changes, thereby enabling controlled dissociation and concomitant drug release. For these reasons, DCvC has recently emerged as a leverage tool with growing prospects for advancing toward smarter delivery systems. The implementation of DCvC can follow three approaches that are discussed herein: (1) dynamic covalent bioconjugates, involving the transient covalent conjugation with a vector, (2) dynamic covalent vectors, involving the controlled dynamic and adaptive assembly and disassembly of vectors that complex drugs through supramolecular association, and (3) dynamic covalent targeting, involving the transient chemoselective formation of covalent bonds with the constituents of cell membranes. While DCvC has already attracted interest in material sciences, the recent results described in this Account showcase the vast potential of DCvC in biological sciences, and in particular in delivery applications where self-fabricated, adaptive, and responsive devices are of utmost importance.
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Affiliation(s)
- Sébastien Ulrich
- IBMM, Université de Montpellier, CNRS, ENSCM, Montpellier, France
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Ailincai D, Peptanariu D, Pinteala M, Marin L. Dynamic constitutional chemistry towards efficient nonviral vectors. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:635-646. [PMID: 30423749 DOI: 10.1016/j.msec.2018.10.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 09/11/2018] [Accepted: 10/01/2018] [Indexed: 10/28/2022]
Abstract
Dynamic constitutional chemistry has been used to design nonviral vectors for gene transfection. Their design has been thought in order to fulfill ab initio the main requirements for gene therapy. As building blocks were used hyperbranched PEI as hydrophilic part and benzentrialdehyde and a diamine linear siloxane as hydrophobic part, connected through reversible imine linkages. The obtaining of the envisaged structures has been confirmed by NMR and FTIR spectroscopy. The dynamic synthesized amphiphiles proved to be able to self-assemble in nano-sized spherical entities as was demonstrated by TEM and DLS, characterized by a narrow dimensional polydispersity. Agarose gel electrophoresis proved the ability of the synthesized compounds to bind DNA, while TEM revealed the spherical morphology of the formed polyplexes. As a proof of the concept, the nonviral vectors promoted an efficient transfection on HeLa cells, demonstrating that dynamic constitutional chemistry can be an important tool in the development of this domain.
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Affiliation(s)
- Daniela Ailincai
- Petru Poni Institute of Macromolecular Chemistry, Iasi, Romania.
| | | | | | - Luminita Marin
- Petru Poni Institute of Macromolecular Chemistry, Iasi, Romania
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Olaru AM, Marin L, Morariu S, Pricope G, Pinteala M, Tartau-Mititelu L. Biocompatible chitosan based hydrogels for potential application in local tumour therapy. Carbohydr Polym 2018; 179:59-70. [DOI: 10.1016/j.carbpol.2017.09.066] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 09/04/2017] [Accepted: 09/21/2017] [Indexed: 01/02/2023]
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Bouillon C, Bessin Y, Poncet F, Gary-Bobo M, Dumy P, Barboiu M, Bettache N, Ulrich S. Biomolecular dynamic covalent polymers for DNA complexation and siRNA delivery. J Mater Chem B 2018; 6:7239-7246. [DOI: 10.1039/c8tb01278d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Dynamic covalent polymers made from modified amino acids complex nucleic acids and deliver siRNA in living cells.
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Affiliation(s)
| | | | | | | | | | - Mihail Barboiu
- IEM
- Adaptive Supramolecular Nanosystems Group
- Université de Montpellier
- CNRS
- ENSCM
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15
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Molina BG, Cianga L, Bendrea AD, Cianga I, del Valle LJ, Estrany F, Alemán C, Armelin E. Amphiphilic polypyrrole-poly(Schiff base) copolymers with poly(ethylene glycol) side chains: synthesis, properties and applications. Polym Chem 2018. [DOI: 10.1039/c8py00762d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
New amphiphilic poly(ethylene glycol) (PEG)-grafted random intrinsically conducting copolymers which combine three different functionalities have been engineered, prepared and characterized.
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Affiliation(s)
- Brenda G. Molina
- Departament d'Enginyeria Química
- EEBE
- Universitat Politècnica de Catalunya
- Barcelona
- Spain
| | - Luminita Cianga
- “Petru Poni” Institute of Macromolecular Chemistry
- Iasi
- Romania
| | | | - Ioan Cianga
- “Petru Poni” Institute of Macromolecular Chemistry
- Iasi
- Romania
| | - Luis J. del Valle
- Departament d'Enginyeria Química
- EEBE
- Universitat Politècnica de Catalunya
- Barcelona
- Spain
| | - Francesc Estrany
- Departament d'Enginyeria Química
- EEBE
- Universitat Politècnica de Catalunya
- Barcelona
- Spain
| | - Carlos Alemán
- Departament d'Enginyeria Química
- EEBE
- Universitat Politècnica de Catalunya
- Barcelona
- Spain
| | - Elaine Armelin
- Departament d'Enginyeria Química
- EEBE
- Universitat Politècnica de Catalunya
- Barcelona
- Spain
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Iftime MM, Morariu S, Marin L. Salicyl-imine-chitosan hydrogels: Supramolecular architecturing as a crosslinking method toward multifunctional hydrogels. Carbohydr Polym 2017; 165:39-50. [DOI: 10.1016/j.carbpol.2017.02.027] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 01/23/2017] [Accepted: 02/08/2017] [Indexed: 12/01/2022]
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Marin L, Ailincai D, Morariu S, Tartau-Mititelu L. Development of biocompatible glycodynameric hydrogels joining two natural motifs by dynamic constitutional chemistry. Carbohydr Polym 2017; 170:60-71. [PMID: 28522004 DOI: 10.1016/j.carbpol.2017.04.055] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 04/19/2017] [Accepted: 04/20/2017] [Indexed: 11/27/2022]
Abstract
The paper focusses on the synthesis of novel hydrogels by joining natural biodegradable compounds with the aim to achieve biocompatible materials for bio related applications. The hydrogels were prepared from chitosan and citral by constitutional dynamic chemistry, incorporating both molecular and supramolecular dynamic features. The hydrophobic flexible citral has been reversible immobilized onto the hydrophilic chitosan backbone via imine bonds to form amphiphilic glycodynamers, which further self-ordered through supramolecular interactions into a 3D-network of biodynameric hydrogel. The synthetic pathway has been demonstrated by NMR and FTIR spectroscopy, X-ray diffraction and polarized light microscopy. Studies of the hydrogel morphology revealed a 3D porous microstructure, whose pores size correlated with the crosslinking degree. Rheological investigations evidenced high elasticity, thermo-responsiveness and thixotropic behavior. As a proof of the concept, the hydrogels proved in vivo biocompatibility on laboratory mice. The paper successfully implements the constitutional dynamic chemistry in generation of chitosan high performance hydrogels.
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Affiliation(s)
- Luminita Marin
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania.
| | - Daniela Ailincai
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania
| | - Simona Morariu
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania
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