1
|
Murphy RD, Garcia RV, Oh SJ, Wood TJ, Jo KD, Read de Alaniz J, Perkins E, Hawker CJ. Tailored Polypeptide Star Copolymers for 3D Printing of Bacterial Composites Via Direct Ink Writing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2207542. [PMID: 36305041 DOI: 10.1002/adma.202207542] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 10/12/2022] [Indexed: 06/16/2023]
Abstract
Hydrogels hold much promise for 3D printing of functional living materials; however, challenges remain in tailoring mechanical robustness as well as biological performance. In addressing this challenge, the modular synthesis of functional hydrogels from 3-arm diblock copolypeptide stars composed of an inner poly(l-glutamate) domain and outer poly(l-tyrosine) or poly(l-valine) blocks is described. Physical crosslinking due to ß-sheet assembly of these star block copolymers gives mechanical stability during extrusion printing and the selective incorporation of methacrylate units allows for subsequent photocrosslinking to occur under biocompatible conditions. This permits direct ink writing (DIW) printing of bacteria-based mixtures leading to 3D objects with high fidelity and excellent bacterial viability. The tunable stiffness of different copolypeptide networks enables control over proliferation and colony formation for embedded Escherichia coli bacteria as demonstrated via isopropyl ß-d-1-thiogalactopyranoside (IPTG) induction of green fluorescent protein (GFP) expression. This translation of molecular structure to network properties highlights the versatility of these polypeptide hydrogel systems with the combination of writable structures and biological activity illustrating the future potential of these 3D-printed biocomposites.
Collapse
Affiliation(s)
- Robert D Murphy
- Materials Research Laboratory (MRL), University of California Santa Barbara, Santa Barbara, CA, 93106, USA
- Department of Chemistry, Royal College of Surgeons in Ireland, Dublin, D02 YN77, Ireland
| | - Ronnie V Garcia
- Materials Research Laboratory (MRL), University of California Santa Barbara, Santa Barbara, CA, 93106, USA
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Seung J Oh
- Construction Engineering Research Laboratory (CERL), US Army Corps Engineers Engineering Research and Development Center (USACE ERDC), Champaign, IL, 61822, USA
| | - Tanner J Wood
- Construction Engineering Research Laboratory (CERL), US Army Corps Engineers Engineering Research and Development Center (USACE ERDC), Champaign, IL, 61822, USA
| | - Kyoo D Jo
- Construction Engineering Research Laboratory (CERL), US Army Corps Engineers Engineering Research and Development Center (USACE ERDC), Champaign, IL, 61822, USA
| | - Javier Read de Alaniz
- Materials Research Laboratory (MRL), University of California Santa Barbara, Santa Barbara, CA, 93106, USA
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Ed Perkins
- Environmental Laboratory (EL), USACE ERDC, Vicksburg, MS, 39180, USA
| | - Craig J Hawker
- Materials Research Laboratory (MRL), University of California Santa Barbara, Santa Barbara, CA, 93106, USA
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA, 93106, USA
- Materials Department, University of California Santa Barbara, Santa Barbara, CA, 93106, USA
| |
Collapse
|
2
|
Murphy RD, Garcia RV, Heise A, Hawker CJ. Peptides as 3D printable feedstocks: Design strategies and emerging applications. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2021.101487] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
3
|
Zheng B, Bai T, Tao X, Ling J. An Inspection into Multifarious Ways to Synthesize Poly(Amino Acid)s. Macromol Rapid Commun 2021; 42:e2100453. [PMID: 34562289 DOI: 10.1002/marc.202100453] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/09/2021] [Indexed: 12/21/2022]
Abstract
Poly(α-amino acid)s (PAAs) attract growing attention due to their essential role in the application as biomaterials. To synthesize PAAs with desired structures and properties, scientists have developed various synthetic techniques with respective advantages. Here, different approaches to preparing PAAs are inspected. Basic features and recent progresses of these methods are summarized, including polymerizations of amino acid N-carboxyanhydrides (NCAs), amino acid N-thiocarboxyanhydrides (NTAs), and N-phenoxycarbonyl amino acids (NPCs), as well as other synthetic routes. NCA is the most classical monomer to prepare PAAs with high molecular weights (MWs). NTA polymerizations are promising alternative pathways to produce PAAs, which can tolerate nucleophiles including alcohols, mercaptans, carboxyl acids, and water. By various techniques including choosing appropriate solvents or using organic acids as promoters, NTAs polymerize to produce polypeptoids and polypeptides with narrow dispersities and designed MWs up to 55.0 and 57.0 kg mol-1 , respectively. NPC polymerizations are phosgene-free ways to synthesize polypeptides and polypeptoids. For the future prospects, detail investigations into polymerization mechanisms of NTA and NPC are expected. The synthesis of PAAs with designed topologies and assembly structures is another intriguing topic. The advantages and unsettled problems in various synthetic ways are discussed for readers to choose appropriate approaches for PAAs.
Collapse
Affiliation(s)
- Botuo Zheng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.,Fujian Key Laboratory of Polymer Science, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, 350007, China
| | - Tianwen Bai
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Xinfeng Tao
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jun Ling
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| |
Collapse
|
4
|
Murphy R, Kordbacheh S, Skoulas D, Ng S, Suthiwanich K, Kasko AM, Cryan SA, Fitzgerald-Hughes D, Khademhosseini A, Sheikhi A, Heise A. Three-dimensionally printable shear-thinning triblock copolypeptide hydrogels with antimicrobial potency. Biomater Sci 2021; 9:5144-5149. [PMID: 34236349 DOI: 10.1039/d1bm00275a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Through rational design, block sequence controlled triblock copolypeptides comprising cysteine and tyrosine as well as a lysine or glutamic acid central block are devised. In these copolypeptides, each block contributes a specific property to the hydrogels to render them extrusion printable and antimicrobial. Three-dimensional (3D) printing of complex hydrogel structures with high shape retention is demonstrated. Moreover, composition dependent potent antimicrobial activity in contact-killing assays is elucidated.
Collapse
Affiliation(s)
- Robert Murphy
- Department of Chemistry, RCSI University of Medicine and Health Sciences, 123 St. Stephens Green, Dublin 2, Ireland.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
5
|
Liu H, Zhang X, Zhao Z, Yang F, Xue R, Yin L, Song Z, Cheng J, Luan S, Tang H. Efficient synthesis and excellent antimicrobial activity of star-shaped cationic polypeptides with improved biocompatibility. Biomater Sci 2021; 9:2721-2731. [PMID: 33617610 DOI: 10.1039/d0bm02151b] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Antimicrobial peptides (AMPs) have been considered as a promising new tool to combat the antimicrobial resistance (AMR) crisis. However, the high toxicity and high cost of AMPs hampered their further development. Herein, a series of star poly(L-lysine) (PLL) homo- and copolymers with excellent antimicrobial activity and improved biocompatibility were prepared by the combination of ultra-fast ring opening polymerization (ROP) and side-chain modification. The amine-terminated polyamidoamine dendrimer (Gx-PAMAM) mediated ROP of Nε-tert-butyloxycarbonyl-L-lysine N-carboxyanhydride (Boc-L-Lys-NCA) and γ-benzyl-L-glutamic acid-based N-carboxyanhydride (PBLG-NCA) was able to prepare star PLL homo- and copolymers with 400 residues within 50 min. While the star PLL homopolymers exhibited low minimum inhibitory concentration (MIC = 50-200 μg mL-1) against both Gram-positive and Gram-negative bacteria (i.e., S. aureus and E. coli), they showed high toxicity against various mammalian cell lines. The star PLL copolymers with low contents of hydrophobic and hydroxyl groups showed enhanced antimicrobial activity (MIC = 25-50 μg mL-1) and improved mammalian cell viability. Both SEM and CLSM results indicated the antimicrobial mechanism of membrane disruption.
Collapse
Affiliation(s)
- Hao Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science & Technology, Soochow University, Suzhou 215123, China.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
6
|
Wu L, Di Cio S, Azevedo HS, Gautrot JE. Photoconfigurable, Cell-Remodelable Disulfide Cross-linked Hyaluronic Acid Hydrogels. Biomacromolecules 2020; 21:4663-4672. [PMID: 32830955 DOI: 10.1021/acs.biomac.0c00603] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Dynamic photoresponsive synthetic hydrogels offer important advantages for biomaterials design, from the ability to cure hydrogels and encapsulate cells in situ to the light-mediated control of cell-spreading and tissue formation. We report the facile and effective photocuring and photoremodeling of disulfide-cross-linked hyaluronic acid hydrogels, based on photo-oxidation of corresponding thiol residues and their radical-mediated photodegradation. We find that the mechanical properties of disulfide hydrogels and the extent of their photoremodeling can be tuned by controlling the photo-oxidation and photodegradation reactions, respectively. This enables not only the photopatterning of the mechanical properties of hydrogels but also their self-healing and photomediated healing. Finally, we demonstrate the ability to encapsulate mesenchymal stromal cells within these materials and to regulate their protrusion and spreading in 3D matrices by controlling the mechanical properties of the disulfide networks. Therefore, synthetically accessible photoconfigurable disulfide hydrogels offer interesting opportunities for the design of soft biomaterials and the regulation of cell encapsulation and matrix remodeling for tissue engineering.
Collapse
Affiliation(s)
- Linke Wu
- Institute of Bioengineering, University of London, Mile End Road, London E1 4NS, U.K.,School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London E1 4NS, U.K
| | - Stefania Di Cio
- Institute of Bioengineering, University of London, Mile End Road, London E1 4NS, U.K.,School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London E1 4NS, U.K
| | - Helena S Azevedo
- Institute of Bioengineering, University of London, Mile End Road, London E1 4NS, U.K.,School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London E1 4NS, U.K
| | - Julien E Gautrot
- Institute of Bioengineering, University of London, Mile End Road, London E1 4NS, U.K.,School of Engineering and Materials Science, Queen Mary, University of London, Mile End Road, London E1 4NS, U.K
| |
Collapse
|
7
|
O'Brien S, Brannigan RP, Ibanez R, Wu B, O'Dwyer J, O'Brien FJ, Cryan SA, Heise A. Biocompatible polypeptide-based interpenetrating network (IPN) hydrogels with enhanced mechanical properties. J Mater Chem B 2020; 8:7785-7791. [PMID: 32744280 DOI: 10.1039/d0tb01422b] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogels are widely used for biomedical applications such as drug delivery, tissue engineering, or wound healing owing to their mimetic properties in relation to biological tissues. The generation of peptide-based hydrogels is a topic of interest due to their potential to increase biocompatibility. However, their usages can be limited when compared to other synthetic hydrogels because of their inferior mechanical properties. Herein, we present the synthesis of novel synthetic polypeptide-based interpenetrating network (IPN) hydrogels with enhanced mechanical properties. The polypeptide single network is obtained from alkyne functional polypeptides crosslinked with di, tri and tetra azide functional PEG by copper-catalysed alkyne-azide cycloaddition (CuAAC). Interpenetrating networks were subsequently obtained by loading of the polypeptide single network with PEG-dithiol and orthogonally UV-crosslinking with varying molar ratios of pentaerythritol tetraacrylate. The characteristics, including the mechanical strength (i.e. compressive strength (UCS), fracture strain (εbreak), and Young's modulus (E)) and cell compatibility (i.e. metabolic activity and Live/Dead of human Mesenchymal Stem Cells), of each synthetic polypeptide-based IPN hydrogel were studied and evaluated in order to demonstrate their potential as mechanically robust hydrogels for use as artificial tissues. Moreover, 1H NMR diffusometry was carried out to examine the water mobility (DH2O) within the polypeptide-based hydrogels and IPNs. It was found that both the mechanical and morphological properties could be tailored concurrently with the hydrophilicity, rate of water diffusion and 'swellability'. Finally it was shown that the polypeptide-based IPN hydrogels exhibited good biocompatibility, highlighting their potential as soft tissue scaffolds.
Collapse
Affiliation(s)
- Shona O'Brien
- Department of Chemistry, Royal College of Surgeons in Ireland, 123 St. Stephens Green, Dublin 2, Ireland.
| | | | | | | | | | | | | | | |
Collapse
|
8
|
Stott J, Schneider JJ. A 3D-polyphenylalanine network inside porous alumina: Synthesis and characterization of an inorganic-organic composite membrane. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2020; 11:938-951. [PMID: 32596097 PMCID: PMC7308615 DOI: 10.3762/bjnano.11.78] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 05/20/2020] [Indexed: 06/11/2023]
Abstract
Surface functionalization of porous materials allows for the introduction of additional functionality coupled with high mechanical stability of functionalized inner pores. Herein, we investigate the surface-initiated ring-opening polymerization (SI-ROP) of phenylalanine-N-carboxyanhydride (PA-NCA) in porous alumina membranes (ALOX-membranes) with respect to different solvent mixtures (tetrahydrofuran (THF) and dichloromethane (DCM)). It was found that increasing the volume fraction of DCM leads to an increasing amount of fibrillar polymer structures within the porous ALOX-membrane. A three-dimensional fibrillar network with intrinsic porosity was formed in DCM, whereas in THF, a dense and smooth polypeptide film was observed. A post-treatment with a mixture of chloroform and dichloroacetic acid leads to rearrangement of the morphology of the grafted polymer films. The analysis by scanning electron microscopy (SEM), near-infrared spectroscopy (NIR) and contact angle measurements (CA) reveals a change in morphology of the grafted polymer films, which is due to the rearrangement of the secondary structure of the polypeptides. No significant loss of the surface-grafted polypeptides was determined by thermogravimetric (TG) measurements, which indicates that the change in morphology of the polymer films is solely a result of a conformational change of the surface-grafted polypeptides. Furthermore, adsorption of a test analyte (chloroanilic acid) was investigated with respect to different polymer functionalization schemes for reversed-phase solid phase extraction applications. The adsorption capability of the functionalized composite membrane was increased from 16.7% to 38.1% compared to the native ALOX-membrane.
Collapse
Affiliation(s)
- Jonathan Stott
- Technische Universität Darmstadt, Fachbereich Chemie, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Alarich-Weiss Str. 12, 64287 Darmstadt, Germany
- Nanoscience for life GmbH & Co. KG, Regerstr. 1, 65193 Wiesbaden, Germany
| | - Jörg J Schneider
- Technische Universität Darmstadt, Fachbereich Chemie, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Alarich-Weiss Str. 12, 64287 Darmstadt, Germany
| |
Collapse
|
9
|
Liu H, Quan Y, Jiang X, Zhao X, Zhou Y, Fu J, Du L, Zhao X, Zhao J, Liang L, Yi D, Huang Y, Ye G. Using Polypeptide Bearing Furan Side Chains as a General Platform to Achieve Highly Effective Preparation of Smart Glycopolypeptide Analogue-Based Nano-Prodrugs for Cancer Treatment. Colloids Surf B Biointerfaces 2020; 194:111165. [PMID: 32521460 DOI: 10.1016/j.colsurfb.2020.111165] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/26/2020] [Accepted: 06/01/2020] [Indexed: 10/24/2022]
Abstract
Although several synthetic polypeptide-based nano-prodrugs (NPDs) have entered clinical trials for cancer treatment, achieving a highly effective production of the NPDs for clinical translation remains a challenge. Herein, we develop a typical preparation of pH/glutathione (GSH) dual-responsive glycopolypeptide analogue NPDs having a high drug capsulation/loading efficiency of ca. 93% and ca. 27% even based on ring-opening polymerization (ROP) of a novel and general furan-containing N-carboxyanhydride (NCA) monomer, which facilitates the Diels-Alder (D-A) side-chain functionalization by maleimide modified chemotherapy drug without using any reactive additives. High reactivity of the D-A reaction resulting in the high preparation efficiency of the NPDs is confirmed by 1H NMR and density functional theory (DFT) calculations. The self-assembled properties as well as the dual-responsiveness of the NPDs are systemically studied by particle size and zeta potential assay, transmission electron microscopy and drug-delivery dynamics. The cell uptake mechanism, intracellular drug distribution, in vitro/vivo antitumor activity evaluations and the main organ damages of the NPDs are all investigated. Our work can provide a good solution to solve the inefficient fabrication of the smart synthetic polypeptide-based micelles for cancer treatment by following this general and sophisticated platform.
Collapse
Affiliation(s)
- Houhe Liu
- The Fifth Affiliated Hospital & School of Pharmaceutical Sciences & Key Lab of Molecular Target and Clinical Pharmacology of Guangdong Province, Guangzhou Medical University, Guangzhou, 511436, China
| | - Yusi Quan
- The Fifth Affiliated Hospital & School of Pharmaceutical Sciences & Key Lab of Molecular Target and Clinical Pharmacology of Guangdong Province, Guangzhou Medical University, Guangzhou, 511436, China
| | - Xinlin Jiang
- The Fifth Affiliated Hospital & School of Pharmaceutical Sciences & Key Lab of Molecular Target and Clinical Pharmacology of Guangdong Province, Guangzhou Medical University, Guangzhou, 511436, China
| | - Xiaotian Zhao
- The Fifth Affiliated Hospital & School of Pharmaceutical Sciences & Key Lab of Molecular Target and Clinical Pharmacology of Guangdong Province, Guangzhou Medical University, Guangzhou, 511436, China
| | - Yi Zhou
- The Fifth Affiliated Hospital & School of Pharmaceutical Sciences & Key Lab of Molecular Target and Clinical Pharmacology of Guangdong Province, Guangzhou Medical University, Guangzhou, 511436, China
| | - Jijun Fu
- The Fifth Affiliated Hospital & School of Pharmaceutical Sciences & Key Lab of Molecular Target and Clinical Pharmacology of Guangdong Province, Guangzhou Medical University, Guangzhou, 511436, China
| | - Lingran Du
- The Fifth Affiliated Hospital & School of Pharmaceutical Sciences & Key Lab of Molecular Target and Clinical Pharmacology of Guangdong Province, Guangzhou Medical University, Guangzhou, 511436, China
| | - Xiaoya Zhao
- The Fifth Affiliated Hospital & School of Pharmaceutical Sciences & Key Lab of Molecular Target and Clinical Pharmacology of Guangdong Province, Guangzhou Medical University, Guangzhou, 511436, China
| | - Jing Zhao
- The Fifth Affiliated Hospital & School of Pharmaceutical Sciences & Key Lab of Molecular Target and Clinical Pharmacology of Guangdong Province, Guangzhou Medical University, Guangzhou, 511436, China
| | - Lu Liang
- The Fifth Affiliated Hospital & School of Pharmaceutical Sciences & Key Lab of Molecular Target and Clinical Pharmacology of Guangdong Province, Guangzhou Medical University, Guangzhou, 511436, China
| | - Di Yi
- Department of Pathology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, 511436, China
| | - Yugang Huang
- The Fifth Affiliated Hospital & School of Pharmaceutical Sciences & Key Lab of Molecular Target and Clinical Pharmacology of Guangdong Province, Guangzhou Medical University, Guangzhou, 511436, China.
| | - Guodong Ye
- The Fifth Affiliated Hospital & School of Pharmaceutical Sciences & Key Lab of Molecular Target and Clinical Pharmacology of Guangdong Province, Guangzhou Medical University, Guangzhou, 511436, China.
| |
Collapse
|
10
|
Rasines Mazo A, Allison-Logan S, Karimi F, Chan NJA, Qiu W, Duan W, O’Brien-Simpson NM, Qiao GG. Ring opening polymerization of α-amino acids: advances in synthesis, architecture and applications of polypeptides and their hybrids. Chem Soc Rev 2020; 49:4737-4834. [DOI: 10.1039/c9cs00738e] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This review provides a comprehensive overview of the latest advances in the synthesis, architectural design and biomedical applications of polypeptides and their hybrids.
Collapse
Affiliation(s)
- Alicia Rasines Mazo
- Polymer Science Group
- Department of Chemical Engineering
- University of Melbourne
- Parkville
- Australia
| | - Stephanie Allison-Logan
- Polymer Science Group
- Department of Chemical Engineering
- University of Melbourne
- Parkville
- Australia
| | - Fatemeh Karimi
- Polymer Science Group
- Department of Chemical Engineering
- University of Melbourne
- Parkville
- Australia
| | - Nicholas Jun-An Chan
- Polymer Science Group
- Department of Chemical Engineering
- University of Melbourne
- Parkville
- Australia
| | - Wenlian Qiu
- Polymer Science Group
- Department of Chemical Engineering
- University of Melbourne
- Parkville
- Australia
| | - Wei Duan
- School of Medicine
- Deakin University
- Geelong
- Australia
| | - Neil M. O’Brien-Simpson
- Centre for Oral Health Research
- Melbourne Dental School and the Bio21 Institute of Molecular Science and Biotechnology
- University of Melbourne
- Parkville
- Australia
| | - Greg G. Qiao
- Polymer Science Group
- Department of Chemical Engineering
- University of Melbourne
- Parkville
- Australia
| |
Collapse
|
11
|
Murphy RD, Kimmins S, Hibbitts AJ, Heise A. 3D-extrusion printing of stable constructs composed of photoresponsive polypeptide hydrogels. Polym Chem 2019. [DOI: 10.1039/c9py00796b] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Printing of novel linear polypeptide hydrogel bioinks and stabilisation of structures by post-printing UV-triggered crosslinking through catalyst free thiol–yne click chemistry of cysteine and propiolated 4-arm PEG.
Collapse
Affiliation(s)
- Robert D. Murphy
- Department of Chemistry
- Royal College of Surgeons in Ireland
- Dublin 2
- Ireland
| | - Scott Kimmins
- Department of Chemistry
- Royal College of Surgeons in Ireland
- Dublin 2
- Ireland
- Institute for Biological and Medical Engineering
| | - Alan J. Hibbitts
- Tissue Engineering Research Group
- Department of Anatomy
- Royal College of Surgeons in Ireland
- Dublin
- Ireland
| | - Andreas Heise
- Department of Chemistry
- Royal College of Surgeons in Ireland
- Dublin 2
- Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER) RCSI and TCD
| |
Collapse
|