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Vaddamanu M, Prabusankar G. Chalcogen Bonding Induced Tetraselenides from Twisted Diselenides. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000275] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Moulali Vaddamanu
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi 502 285 Sangareddy Telangana India
| | - Ganesan Prabusankar
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi 502 285 Sangareddy Telangana India
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2
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Pedron S, Pritchard AM, Vincil GA, Andrade B, Zimmerman SC, Harley BA. Patterning Three-Dimensional Hydrogel Microenvironments Using Hyperbranched Polyglycerols for Independent Control of Mesh Size and Stiffness. Biomacromolecules 2017; 18:1393-1400. [PMID: 28245360 PMCID: PMC5444810 DOI: 10.1021/acs.biomac.7b00118] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The extracellular matrix is an environment rich with structural, mechanical, and molecular signals that can impact cell biology. Traditional approaches in hydrogel biomaterial design often rely on modifying the concentration of cross-linking groups to adjust mechanical properties. However, this strategy provides limited capacity to control additional important parameters in 3D cell culture such as microstructure and molecular diffusivity. Here we describe the use of multifunctional hyperbranched polyglycerols (HPGs) to manipulate the mechanical properties of polyethylene glycol (PEG) hydrogels while not altering biomolecule diffusion. This strategy also provides the ability to separately regulate spatial and temporal distribution of biomolecules tethered within the hydrogel. The functionalized HPGs used here can also react through a copper-free click chemistry, allowing for the encapsulation of cells and covalently tethered biomolecules within the hydrogel. Because of the hyperbranched architecture and unique properties of HPGs, their addition into PEG hydrogels affords opportunities to locally alter hydrogel cross-linking density with minimal effects on global network architecture. Additionally, photocoupling chemistry allows micropatterning of bioactive cues within the three-dimensional gel structure. This approach therefore enables us to tailor mechanical and diffusive properties independently while further allowing for local modulation of biomolecular cues to create increasingly complex cell culture microenvironments.
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Affiliation(s)
- Sara Pedron
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 1206 West Gregory Drive, Urbana, IL 61801, USA
| | - Amanda M. Pritchard
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 1206 West Gregory Drive, Urbana, IL 61801, USA
| | - Gretchen A. Vincil
- Department of Chemistry, University of Illinois at Urbana-Champaign, 505 South Mathews Avenue, Urbana, IL 61801, USA
| | - Brenda Andrade
- Department of Chemistry, University of Illinois at Urbana-Champaign, 505 South Mathews Avenue, Urbana, IL 61801, USA
| | - Steven C. Zimmerman
- Department of Chemistry, University of Illinois at Urbana-Champaign, 505 South Mathews Avenue, Urbana, IL 61801, USA
| | - Brendan A.C. Harley
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 1206 West Gregory Drive, Urbana, IL 61801, USA
- Dept. of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 110 Roger Adams Lab., 600 S. Mathews Avenue, Urbana, IL 61801, USA
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3
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Li L, Knickelbein K, Zhang L, Wang J, Obrinske M, Ma GZ, Zhang LM, Bitterman L, Du W. Amphiphilic sugar poly(orthoesters) as pH-responsive nanoscopic assemblies for acidity-enhanced drug delivery and cell killing. Chem Commun (Camb) 2015; 51:13078-81. [DOI: 10.1039/c5cc04078g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A sugar poly(orthoester)-based drug delivery system was constructed to achieve acidity-enhanced drug delivery and cell killing.
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Affiliation(s)
- Lingyao Li
- Department of Chemistry and Biochemistry
- Science of Advanced Materials
- Central Michigan University
- Mount Pleasant
- USA
| | - Kyle Knickelbein
- Department of Pharmacology & Chemical Biology
- University of Pittsburgh
- Pittsburgh
- USA
| | - Lin Zhang
- Department of Pharmacology & Chemical Biology
- University of Pittsburgh
- Pittsburgh
- USA
| | - Jun Wang
- Department of Chemistry and Biochemistry
- Science of Advanced Materials
- Central Michigan University
- Mount Pleasant
- USA
| | - Melissa Obrinske
- Department of Chemistry and Biochemistry
- Science of Advanced Materials
- Central Michigan University
- Mount Pleasant
- USA
| | | | - Li-Ming Zhang
- Department of Polymer and Materials Science
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Lindsay Bitterman
- Department of Chemistry and Biochemistry
- Science of Advanced Materials
- Central Michigan University
- Mount Pleasant
- USA
| | - Wenjun Du
- Department of Chemistry and Biochemistry
- Science of Advanced Materials
- Central Michigan University
- Mount Pleasant
- USA
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4
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Fu L, Li L, Wang J, Knickelbein K, Zhang L, Milligan I, Xu Y, O'Hara K, Bitterman L, Du W. Synthesis of clickable amphiphilic polysaccharides as nanoscopic assemblies. Chem Commun (Camb) 2014; 50:12742-5. [PMID: 25204678 DOI: 10.1039/c4cc06343k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The synthesis of clickable polysaccharides was achieved by using alkynylated 1,6-anhydro glucopyranose as a monomer and BF3·OEt2 as an effective catalyst. Subsequent click conjugation with polyethylene glycol (PEG) afforded PEG-grafted polysaccharides in nearly quantitative efficiency.
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Affiliation(s)
- Liye Fu
- Department of Chemistry, Science of Advanced Materials, Central Michigan University, Mount Pleasant, MI 48858, USA.
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5
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Wang DK, Varanasi S, Strounina E, Hill DJT, Symons AL, Whittaker AK, Rasoul F. Synthesis and characterization of a POSS-PEG macromonomer and POSS-PEG-PLA hydrogels for periodontal applications. Biomacromolecules 2014; 15:666-79. [PMID: 24410405 DOI: 10.1021/bm401728p] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A novel water-soluble macromonomer based on octavinyl silsesquioxane has been synthesized and contains vinyl-terminated PEG 400 in each of the eight arms to promote water solubility. The macromonomer was characterized by NMR and FTIR and its aqueous solution properties examined. In water it exhibits an LCST with a cloud point at 23 °C for a 10 wt % aqueous solution. It is surface active with a CMC of 1.5 × 10(-5) M in water and in 20:80 v/v acetone/water the CMC is 7.1 × 10(-5) M, and TEM images showed spherical 22 nm aggregates in aqueous solution above the CMC. The macromonomer was copolymerized in a 20:80 v/v acetone/water mixture with a vinyl-terminated, triblock copolymer of lactide-PEG-lactide to form a library of cross-linked hydrogels that were designed for use as scaffolds for alveolar bone repair. The cross-linked copolymer networks were shown to contain a range of nm-μm sized pores and their swelling properties in water and PBS at pH 7.4 were examined. At pH 7.4 the hydrogel networks undergo a slow hydrolysis with the release of principally PEG and lactic acid fragments. The hydrogels were shown to be noncytotoxic toward fibroblast cultures at pH 7.4, both initially (days 1-5) and after significant hydrolysis had taken place (days 23-28).
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Affiliation(s)
- David K Wang
- Australian Institute for Bioengineering and Nanotechnology, ‡Centre for Advanced Imaging, ∥School of Chemistry and Molecular Biochemistry, and §School of Dentistry, The University of Queensland , Brisbane Queensland 4072, Australia
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6
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Thomas A, Niederer K, Wurm F, Frey H. Combining oxyanionic polymerization and click-chemistry: a general strategy for the synthesis of polyether polyol macromonomers. Polym Chem 2014. [DOI: 10.1039/c3py01078c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Wang DK, Varanasi S, Fredericks PM, Hill DJ, Symons AL, Whittaker AK, Rasoul F. FT-IR characterization and hydrolysis of PLA-PEG-PLA based copolyester hydrogels with short PLA segments and a cytocompatibility study. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26930] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- David K. Wang
- Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; Brisbane Queensland 4072 Australia
- Centre for Advanced Imaging; The University of Queensland; Brisbane Queensland 4072 Australia
| | - Srinivas Varanasi
- School of Dentistry; The University of Queensland; Brisbane Queensland 4000 Australia
| | - Peter M. Fredericks
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty; Queensland University of Technology; 2 George Street Brisbane Queensland 4001 Australia
| | - David J.T. Hill
- School of Chemistry and Molecular Biosciences; The University of Queensland; Brisbane Queensland 4072 Australia
| | - Anne L. Symons
- School of Dentistry; The University of Queensland; Brisbane Queensland 4000 Australia
| | - Andrew K. Whittaker
- Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; Brisbane Queensland 4072 Australia
- Centre for Advanced Imaging; The University of Queensland; Brisbane Queensland 4072 Australia
| | - Firas Rasoul
- Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; Brisbane Queensland 4072 Australia
- Centre for Advanced Imaging; The University of Queensland; Brisbane Queensland 4072 Australia
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8
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Zhang H, Patel A, Gaharwar AK, Mihaila SM, Iviglia G, Mukundan S, Bae H, Yang H, Khademhosseini A. Hyperbranched polyester hydrogels with controlled drug release and cell adhesion properties. Biomacromolecules 2013; 14:1299-310. [PMID: 23394067 PMCID: PMC3653976 DOI: 10.1021/bm301825q] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Hyperbranched polyesters (HPE) have a high efficiency to encapsulate bioactive agents, including drugs, genes, and proteins, due to their globe-like nanostructure. However, the use of these highly branched polymeric systems for tissue engineering applications has not been broadly investigated. Here, we report synthesis and characterization of photocrosslinkable HPE hydrogels with sustained drug release characteristics for cellular therapies. These HPE can encapsulate hydrophobic drug molecules within the HPE cavities due to the presence of a hydrophobic inner structure that is otherwise difficult to achieve in conventional hydrogels. The functionalization of HPE with photocrosslinkable acrylate moieties renders the formation of hydrogels with a highly porous interconnected structure and mechanically tough network. The compressive modulus of HPE hydrogels was tunable by changing the crosslinking density. The feasibility of using these HPE networks for cellular therapies was investigated by evaluating cell adhesion, spreading, and proliferation on hydrogel surface. Highly crosslinked and mechanically stiff HPE hydrogels have higher cell adhesion, spreading, and proliferation compared to soft and complaint HPE hydrogels. Overall, we showed that hydrogels made from HPE could be used for biomedical applications that require spatial control of cell adhesion and controlled release of hydrophobic clues.
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Affiliation(s)
- Hongbin Zhang
- Center for Biomedical Engindeering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
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Albertazzi L, Mickler FM, Pavan GM, Salomone F, Bardi G, Panniello M, Amir E, Kang T, Killops KL, Bräuchle C, Amir RJ, Hawker CJ. Enhanced bioactivity of internally functionalized cationic dendrimers with PEG cores. Biomacromolecules 2012; 13:4089-97. [PMID: 23140570 PMCID: PMC3524974 DOI: 10.1021/bm301384y] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hybrid dendritic-linear block copolymers based on a 4-arm poly(ethylene glycol) (PEG) core were synthesized using an accelerated AB2/CD2 dendritic growth approach through orthogonal amine/epoxy and thiol-yne chemistries. The biological activity of these 4-arm and the corresponding 2-arm hybrid dendrimers revealed an enhanced, dendritic effect with an exponential increase in cell internalization concomitant with increasing amine end groups and low cytotoxicity. Furthermore, the ability of these hybrid dendrimers to induce endosomal escape combined with their facile and efficient synthesis makes them attractive platforms for gene transfection. The 4-arm-based dendrimer showed significantly improved DNA binding and gene transfection capabilities in comparison with the 2-arm derivative. These results combined with the MD simulation indicate a significant effect of both the topology of the PEG core and the multivalency of these hybrid macromolecules on their DNA binding and delivery capablities.
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Affiliation(s)
- Lorenzo Albertazzi
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106-5121, USA
- NEST, Scuola Normale Superiore and CNR-INFM, and IIT@NEST, Center for Nanotechnology Innovation, Piazza San Silvestro 12, 56126 Pisa, Italy
| | - Frauke M. Mickler
- Department of Chemistry, Ludwig-Maximilians-Universität München, Center for NanoScience (CeNS) and Center for Integrated Protein Science Munich (CIPSM), Butenandtstr. 5-13, D-81377, München, Germany
| | - Giovanni M. Pavan
- Laboratory of Applied Mathematics and Physics (LaMFI),University of Applied Sciences of Southern Switzerland (SUPSI), Centro Galleria 2, Manno, 6928, Switzerland
| | - Fabrizio Salomone
- NEST, Scuola Normale Superiore and CNR-INFM, and IIT@NEST, Center for Nanotechnology Innovation, Piazza San Silvestro 12, 56126 Pisa, Italy
| | - Giuseppe Bardi
- NEST, Scuola Normale Superiore and CNR-INFM, and IIT@NEST, Center for Nanotechnology Innovation, Piazza San Silvestro 12, 56126 Pisa, Italy
| | - Mariangela Panniello
- NEST, Scuola Normale Superiore and CNR-INFM, and IIT@NEST, Center for Nanotechnology Innovation, Piazza San Silvestro 12, 56126 Pisa, Italy
| | - Elizabeth Amir
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106-5121, USA
| | - Taegon Kang
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106-5121, USA
| | - Kato L. Killops
- US Army RDECOM Edgewood Chemical Biological Center, Aberdeen Proving Ground, MD 21010
| | - Christoph Bräuchle
- Department of Chemistry, Ludwig-Maximilians-Universität München, Center for NanoScience (CeNS) and Center for Integrated Protein Science Munich (CIPSM), Butenandtstr. 5-13, D-81377, München, Germany
| | - Roey J. Amir
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106-5121, USA
- Department of Organic Chemistry, School of Chemistry, Faculty of Exact Sciences, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Craig J. Hawker
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106-5121, USA
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Liu W, Tohnai N, Hisaki I, Miyata M, Chen W, Wu Y, Liu J. Thermoswitchable fluorescence organogels based on hydrogen bond‐assisted chiral gelators. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26440] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wen‐Tzu Liu
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 1‐1 Yamadaoka, Suita, Osaka 565‐0871, Japan
| | - Norimitsu Tohnai
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 1‐1 Yamadaoka, Suita, Osaka 565‐0871, Japan
| | - Ichiro Hisaki
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 1‐1 Yamadaoka, Suita, Osaka 565‐0871, Japan
| | - Mikiji Miyata
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 1‐1 Yamadaoka, Suita, Osaka 565‐0871, Japan
| | - Wen‐Ting Chen
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Yen‐Jou Wu
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Jui‐Hsiang Liu
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
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11
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Tao Y, Ai L, Bai H, Liu X. Synthesis of pH-responsive photocrosslinked hyaluronic acid-based hydrogels for drug delivery. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26159] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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12
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Wang DK, Varanasi S, Hill DJT, Rasoul F, Symons AL, Whittaker AK. The influence of composition on the physical properties of PLA-PEG-PLA-co-Boltorn based polyester hydrogels and their biological performance. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm00039c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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