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Rys EG, Alpatova VM, Kononova EG, Smol’yakov AF, Moiseev SK, Ol'shevskaya VA. Employment of Michael addition reactions for the functionalization of carboranes. NEW J CHEM 2022. [DOI: 10.1039/d2nj03509j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Triton B-catalyzed Michael reaction as a green chemistry process was used for the functionalization of carbon- and boron-substituted carboranes with α,β-unsaturated nitriles and esters.
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Affiliation(s)
- Evgeny G. Rys
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28, bld. 1 Vavilova St., 119334 Moscow, Russian Federation
| | - Victoria M. Alpatova
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28, bld. 1 Vavilova St., 119334 Moscow, Russian Federation
| | - Elena G. Kononova
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28, bld. 1 Vavilova St., 119334 Moscow, Russian Federation
| | - Alexander F. Smol’yakov
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28, bld. 1 Vavilova St., 119334 Moscow, Russian Federation
- Plekhanov Russian University of Economics, Stremyanny per. 36, 117997 Moscow, Russian Federation
| | - Sergey K. Moiseev
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28, bld. 1 Vavilova St., 119334 Moscow, Russian Federation
| | - Valentina A. Ol'shevskaya
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28, bld. 1 Vavilova St., 119334 Moscow, Russian Federation
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2
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Guven MN, Balaban B, Demirci G, Yagci Acar H, Okay O, Avci D. Bisphosphonate-functionalized poly(amido amine) crosslinked 2-hydroxyethyl methacrylate hydrogel as tissue engineering scaffold. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Altuncu S, Akyol E, Guven MN, Demirci G, Yagci Acar H, Avci D. Phosphonic acid-functionalized poly(amido amine) macromers for biomedical applications. J Biomed Mater Res A 2020; 108:2100-2110. [PMID: 32319210 DOI: 10.1002/jbm.a.36969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 03/21/2020] [Accepted: 03/28/2020] [Indexed: 11/10/2022]
Abstract
Novel phosphonic acid-functionalized poly(amido amine) (PAA) macromers are synthesized through aza-Michael addition of 2-aminoethyl phosphonic acid or its mixture with 5-amino-1-pentanol at different ratios onto N,N'-methylene bis(acrylamide) to control the amount of phosphonic acid functionality. The macromers were homo- and copolymerized with 2-hydroxyethyl methacrylate at different ratios to obtain hydrogels with various hydrophilicities. The hydrogels' swelling, biodegradation and mineralization properties were evaluated. The swelling and degradation rates of the gels can be tuned by the chemical structure of PAA macromer precursors as well as pH and CaCl2 pre-treatment. The hydrogels show composition-dependent mineralization in SBF and 5xSBF, as evidenced from Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDX) analyses. The degradation products of the hydrogels have no effect on U-2 OS, Saos-2 and NIH 3T3 cells, suggesting their cytocompatibility. Overall, these materials have potential to be used as nontoxic degradable biomaterials.
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Affiliation(s)
- Seckin Altuncu
- Department of Chemistry, Bogazici University, Istanbul, Turkey
| | - Ece Akyol
- Department of Chemistry, Bogazici University, Istanbul, Turkey
| | - Melek Naz Guven
- Department of Chemistry, Bogazici University, Istanbul, Turkey
| | - Gozde Demirci
- Department of Chemistry, Koc University, Istanbul, Turkey
| | | | - Duygu Avci
- Department of Chemistry, Bogazici University, Istanbul, Turkey
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Innovative catalysis in Michael addition reactions for C-X bond formation. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.110814] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Nezhad-Mokhtari P, Ghorbani M, Roshangar L, Soleimani Rad J. A review on the construction of hydrogel scaffolds by various chemically techniques for tissue engineering. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.05.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mauro N, Chiellini F, Bartoli C, Gazzarri M, Laus M, Antonioli D, Griffiths P, Manfredi A, Ranucci E, Ferruti P. RGD-mimic polyamidoamine-montmorillonite composites with tunable stiffness as scaffolds for bone tissue-engineering applications. J Tissue Eng Regen Med 2016; 11:2164-2175. [DOI: 10.1002/term.2115] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 09/17/2015] [Accepted: 11/18/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Nicolò Mauro
- Dipartimento di Chimica; Università degli Studi di Milano; Italy
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche, Laboratory of Biocompatible Polymers; Università Degli Studi di Palermo; Via Archirafi 32 90123 Palermo Italy
| | | | | | | | - Michele Laus
- Dipartimento di Scienze ed Innovazione Tecnologica; Università del Piemonte Orientale 'A. Avogadro'; Alessandria Italy
| | - Diego Antonioli
- Dipartimento di Scienze ed Innovazione Tecnologica; Università del Piemonte Orientale 'A. Avogadro'; Alessandria Italy
| | - Peter Griffiths
- Department of Pharmaceutical, Chemical and Environmental Sciences, Faculty of Engineering and Science; University of Greenwich, Medway Campus; Kent UK
| | - Amedea Manfredi
- Dipartimento di Chimica; Università degli Studi di Milano; Italy
| | | | - Paolo Ferruti
- Dipartimento di Chimica; Università degli Studi di Milano; Italy
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Tocchio A, Martello F, Tamplenizza M, Rossi E, Gerges I, Milani P, Lenardi C. RGD-mimetic poly(amidoamine) hydrogel for the fabrication of complex cell-laden micro constructs. Acta Biomater 2015; 18:144-54. [PMID: 25724444 DOI: 10.1016/j.actbio.2015.02.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 02/15/2015] [Accepted: 02/18/2015] [Indexed: 12/12/2022]
Abstract
The potential of the 3D cell culture approach for creating in vitro models for drug screening and cellular studies, has led to the development of hydrogels that are able to mimic the in vivo 3D cellular milieu. To this aim, synthetic polymer-based hydrogels, with which it is possible to fine-tune the chemical and biophysical properties of the cell microenvironment, are becoming more and more acclaimed. Of all synthetic materials, poly(amidoamine)s (PAAs) hydrogels are known to have promising properties. In particular, PAAs hydrogels containing the 2,2-bisacrylamidoacetic acid-agmatine monomeric unit are capable of enhancing cellular adhesion by interacting with the RGD-binding αVβ3 integrin. The synthesis of a new photocrosslinkable, biomimetic PAA-Jeffamine®-PAA triblock copolymer (PJP) hydrogel is reported in this paper with the aim of improving the optical, biocompatibility and cell-adhesion properties of previously studied PAA hydrogels and providing an inexpensive alternative to the RGD peptide based hydrogels. The physicochemical properties of PJP hydrogels are extensively discussed and the behavior of 2D and 3D cell cultures was analyzed in depth with different cell types. Moreover, cell-laden PJP hydrogels were patterned with perfusable microchannels and seeded with endothelial cells, in order to investigate the possibility of using PJP hydrogels for fabricating cell laden tissue-like micro constructs and microfluidic devices. Overall the data obtained suggest that PJP could ultimately become a useful tool for fabricating improved in vitro models in order to potentially enhance the effectiveness of drug screening and clinical treatments.
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Affiliation(s)
- Alessandro Tocchio
- SEMM, European School of Molecular Medicine, Campus IFOM-IEO, Via Adamello 16, 20139 Milano, Italy
| | | | | | - Eleonora Rossi
- SEMM, European School of Molecular Medicine, Campus IFOM-IEO, Via Adamello 16, 20139 Milano, Italy
| | - Irini Gerges
- Fondazione Filarete, Viale Ortles 22/4, 20139 Milano, Italy
| | - Paolo Milani
- Fondazione Filarete, Viale Ortles 22/4, 20139 Milano, Italy; CIMaINa, Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy
| | - Cristina Lenardi
- Fondazione Filarete, Viale Ortles 22/4, 20139 Milano, Italy; CIMaINa, Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy.
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Hoffmann C, Stuparu MC, Daugaard A, Khan A. Aza-Michael addition reaction: Post-polymerization modification and preparation of PEI/PEG-based polyester hydrogels from enzymatically synthesized reactive polymers. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27498] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Christian Hoffmann
- Danish Polymer Centre; Department of Chemical and Biochemical Engineering; Technical University of Denmark, DTU, Søltofts Plads; Building 229, 2800, Kgs Lyngby Denmark
- Department of Materials; ETH-Zürich; Zürich Switzerland
| | - Mihaiela C. Stuparu
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences, Nanyang Technological University (NTU); Singapore
| | - Anders Daugaard
- Danish Polymer Centre; Department of Chemical and Biochemical Engineering; Technical University of Denmark, DTU, Søltofts Plads; Building 229, 2800, Kgs Lyngby Denmark
| | - Anzar Khan
- Department of Materials; ETH-Zürich; Zürich Switzerland
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Martello F, Tocchio A, Tamplenizza M, Gerges I, Pistis V, Recenti R, Bortolin M, Del Fabbro M, Argentiere S, Milani P, Lenardi C. Poly(amido-amine)-based hydrogels with tailored mechanical properties and degradation rates for tissue engineering. Acta Biomater 2014; 10:1206-15. [PMID: 24361426 DOI: 10.1016/j.actbio.2013.12.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Revised: 11/20/2013] [Accepted: 12/12/2013] [Indexed: 11/15/2022]
Abstract
Poly(amido-amine) (PAA) hydrogels containing the 2,2-bisacrylamidoacetic acid-4-amminobutyl guanidine monomeric unit have a known ability to enhance cellular adhesion by interacting with the arginin-glycin-aspartic acid (RGD)-binding αVβ3 integrin, expressed by a wide number of cell types. Scientific interest in this class of materials has traditionally been hampered by their poor mechanical properties and restricted range of degradation rate. Here we present the design of novel biocompatible, RGD-mimic PAA-based hydrogels with wide and tunable degradation rates as well as improved mechanical and biological properties for biomedical applications. This is achieved by radical polymerization of acrylamide-terminated PAA oligomers in both the presence and absence of 2-hydroxyethylmethacrylate. The degradation rate is found to be precisely tunable by adjusting the PAA oligomer molecular weight and acrylic co-monomer concentration in the starting reaction mixture. Cell adhesion and proliferation tests on Madin-Darby canine kidney epithelial cells show that PAA-based hydrogels have the capacity to promote cell adhesion up to 200% compared to the control. Mechanical tests show higher compressive strength of acrylic chain containing hydrogels compared to traditional PAA hydrogels.
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Affiliation(s)
| | - Alessandro Tocchio
- SEMM, European School of Molecular Medicine, Campus IFOM-IEO, Via Adamello 16, 20139 Milano, Italy
| | | | - Irini Gerges
- Fondazione Filarete, Viale Ortles 22/4, 20139 Milano, Italy
| | | | | | - Monica Bortolin
- Dipartimento di Scienze Biomediche, Chirurgiche ed Odontoiatriche Università degli Studi di Milano, Via R. Galeazzi 4, 20161 Milano, Italy
| | - Massimo Del Fabbro
- Dipartimento di Scienze Biomediche, Chirurgiche ed Odontoiatriche Università degli Studi di Milano, Via R. Galeazzi 4, 20161 Milano, Italy
| | | | - Paolo Milani
- Fondazione Filarete, Viale Ortles 22/4, 20139 Milano, Italy; CIMaINa, Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy
| | - Cristina Lenardi
- Fondazione Filarete, Viale Ortles 22/4, 20139 Milano, Italy; CIMaINa, Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy
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Affiliation(s)
- Paolo Ferruti
- Dipartimento di Chimicavia C. Golgi 1920133Milano Italy
- Consorzio Nazionale Interuniversitario di Scienza e Tecnologia dei Materiali (INSTM)via G. Giusti 950121Firenze Italy
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Dos Reis G, Fenili F, Gianfelice A, Bongiorno G, Marchesi D, Scopelliti PE, Borgonovo A, Podestà A, Indrieri M, Ranucci E, Ferruti P, Lenardi C, Milani P. Direct microfabrication of topographical and chemical cues for the guided growth of neural cell networks on polyamidoamine hydrogels. Macromol Biosci 2011; 10:842-52. [PMID: 20437406 DOI: 10.1002/mabi.200900410] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Cell patterning is an important tool for organizing cells in surfaces and to reproduce in a simple way the tissue hierarchy and complexity of pluri-cellular life. The control of cell growth, proliferation and differentiation on solid surfaces is consequently important for prosthetics, biosensors, cell-based arrays, stem cell therapy and cell-based drug discovery concepts. We present a new electron beam lithography method for the direct and simultaneous fabrication of sub-micron topographical and chemical patterns, on a biocompatible and biodegradable PAA hydrogel. The localized e-beam modification of a hydrogel surface makes the pattern able to adsorb proteins in contrast with the anti-fouling surface. By also exploiting the selective attachment, growth and differentiation of PC12 cells, we fabricated a neural network of single cells connected by neuritis extending along microchannels. E-beam microlithography on PAA hydrogels opens up the opportunity of producing multifunctional microdevices incorporating complex topographies, allowing precise control of the growth and organization of individual cells.
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Affiliation(s)
- Gabriel Dos Reis
- European School of Molecular Medicine - SEMM, IFOM-IEO campus, Via Adamello, 16 20139 Milan, Italy
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Poly(amidoamine) Hydrogels as Scaffolds for Cell Culturing and Conduits for Peripheral Nerve Regeneration. INT J POLYM SCI 2011. [DOI: 10.1155/2011/161749] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Biodegradable and biocompatible poly(amidoamine)-(PAA-) based hydrogels have been considered for different tissue engineering applications. First-generation AGMA1 hydrogels, amphoteric but prevailing cationic hydrogels containing carboxylic and guanidine groups as side substituents, show satisfactory results in terms of adhesion and proliferation properties towards different cell lines. Unfortunately, these hydrogels are very swellable materials, breakable on handling, and have been found inadequate for other applications. To overcome this problem, second-generation AGMA1 hydrogels have been prepared adopting a new synthetic method. These new hydrogels exhibit good biological propertiesin vitrowith satisfactory mechanical characteristics. They are obtained in different forms and shapes and successfully testedin vivofor the regeneration of peripheral nerves. This paper reports on our recent efforts in the use of first-and second-generation PAA hydrogels as substrates for cell culturing and tubular scaffold for peripheral nerve regeneration.
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