1
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Veloso SRS, Rosa M, Diaferia C, Fernandes C. A Review on the Rheological Properties of Single Amino Acids and Short Dipeptide Gels. Gels 2024; 10:507. [PMID: 39195036 DOI: 10.3390/gels10080507] [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: 07/10/2024] [Revised: 07/26/2024] [Accepted: 07/29/2024] [Indexed: 08/29/2024] Open
Abstract
Self-assembled peptide-based hydrogels have attracted considerable interest from the research community. Particularly, low molecular weight gelators (LMWGs) consisting of amino acids and short peptides are highly suitable for biological applications owing to their facile synthesis and scalability, as well as their biocompatibility, biodegradability, and stability in physiological conditions. However, challenges in understanding the structure-property relationship and lack of design rules hinder the development of new gelators with the required properties for several applications. Hereby, in the plethora of peptide-based gelators, this review discusses the mechanical properties of single amino acid and dipeptide-based hydrogels. A mutual analysis of these systems allows us to highlight the relationship between the gel mechanical properties and amino acid sequence, preparation methods, or N capping groups. Additionally, recent advancements in the tuning of the gels' rheological properties are reviewed. In this way, the present review aims to help bridge the knowledge gap between structure and mechanical properties, easing the selection or design of peptides with the required properties for biological applications.
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Affiliation(s)
- Sérgio R S Veloso
- Physics Centre of Minho and Porto Universities (CF-UM-UP), Laboratory of Physics for Materials and Emergent Technologies (LaPMET), University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal
| | - Mariangela Rosa
- Department of Pharmacy, Centro Interuniversitario di Ricerca sui Peptidi Bioattivi "Carlo Pedone" (CIRPeB), University of Naples "Federico II", Via Tommaso de Amicis 95, 80131 Naples, Italy
| | - Carlo Diaferia
- Department of Pharmacy, Centro Interuniversitario di Ricerca sui Peptidi Bioattivi "Carlo Pedone" (CIRPeB), University of Naples "Federico II", Via Tommaso de Amicis 95, 80131 Naples, Italy
| | - Célio Fernandes
- Transport Phenomena Research Centre (CEFT), Department of Mechanical Engineering, Faculty of Engineering, University of Porto (FEUP), Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal
- Centre of Mathematics (CMAT), School of Sciences, University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal
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2
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Salter LC, Wojciechowski JP, McLean B, Charchar P, Barnes PRF, Creamer A, Doutch J, Barriga HMG, Holme MN, Yarovsky I, Stevens MM. 3,4-Ethylenedioxythiophene Hydrogels: Relating Structure and Charge Transport in Supramolecular Gels. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2024; 36:3092-3106. [PMID: 38617802 PMCID: PMC11007859 DOI: 10.1021/acs.chemmater.3c01360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 03/05/2024] [Accepted: 03/05/2024] [Indexed: 04/16/2024]
Abstract
Ionic charge transport is a ubiquitous language of communication in biological systems. As such, bioengineering is in constant need of innovative, soft, and biocompatible materials that facilitate ionic conduction. Low molecular weight gelators (LMWGs) are complex self-assembled materials that have received increasing attention in recent years. Beyond their biocompatible, self-healing, and stimuli responsive facets, LMWGs can be viewed as a "solid" electrolyte solution. In this work, we investigate 3,4-ethylenedioxythiophene (EDOT) as a capping group for a small peptide library, which we use as a system to understand the relationship between modes of assembly and charge transport in supramolecular gels. Through a combination of techniques including small-angle neutron scattering (SANS), NMR-based Van't Hoff analysis, atomic force microscopy (AFM), rheology, four-point probe, and electrochemical impedance spectroscopy (EIS), we found that modifications to the peptide sequence result in distinct assembly pathways, thermodynamic parameters, mechanical properties, and ionic conductivities. Four-point probe conductivity measurements and electrochemical impedance spectroscopy suggest that ionic conductivity is approximately doubled by programmable gel assemblies with hollow cylinder morphologies relative to gels containing solid fibers or a control electrolyte. More broadly, it is hoped this work will serve as a platform for those working on charge transport of aqueous soft materials in general.
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Affiliation(s)
- Luke C.
B. Salter
- Department
of Materials and Department of Bioengineering, Institute of Biomedical
Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Jonathan P. Wojciechowski
- Department
of Materials and Department of Bioengineering, Institute of Biomedical
Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Ben McLean
- School
of Engineering, RMIT University, Melbourne, Victoria 3001, Australia
- ARC
Research Hub for Australian Steel Innovation, https://www.rmit.edu.au/research/centres-collaborations/multi-partner-collaborations/arc-research-hub-aus-steel-manufacturing
| | - Patrick Charchar
- School
of Engineering, RMIT University, Melbourne, Victoria 3001, Australia
| | - Piers R. F. Barnes
- Department
of Physics, Imperial College London, London SW7 2AZ, United
Kingdom
| | - Adam Creamer
- Department
of Materials and Department of Bioengineering, Institute of Biomedical
Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - James Doutch
- ISIS
Muon and Neutron Source, Rutherford Appleton
Laboratory, Harwell Campus, Oxfordshire OX11 0QX, United Kingdom
| | - Hanna M. G. Barriga
- Department
of Medical Biochemistry and Biophysics, Karolinska Institute, 171 77 Stockholm, Sweden
| | - Margaret N. Holme
- Department
of Medical Biochemistry and Biophysics, Karolinska Institute, 171 77 Stockholm, Sweden
| | - Irene Yarovsky
- School
of Engineering, RMIT University, Melbourne, Victoria 3001, Australia
| | - Molly M. Stevens
- Department
of Materials and Department of Bioengineering, Institute of Biomedical
Engineering, Imperial College London, London SW7 2AZ, United Kingdom
- Department
of Medical Biochemistry and Biophysics, Karolinska Institute, 171 77 Stockholm, Sweden
- Department
of Physiology, Anatomy and Genetics, Department of Engineering Science,
and Kavli Institute for Nanoscience Discovery, University of Oxford, OX1
3QU, Oxford, United Kingdom
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3
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Shinde SD, Kulkarni N, Sahu B. Synthesis and Investigation of Backbone Modified Squaramide Dipeptide Self-Assembly. ACS APPLIED BIO MATERIALS 2023; 6:507-518. [PMID: 36716238 DOI: 10.1021/acsabm.2c00803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Dipeptides are minimalistic peptide building blocks that form well ordered structures through molecular self-assembly. The driving forces involved are cooperative noncovalent interactions such as π-π stacking, hydrogen bonding, and ionic as well as hydrophobic interactions. One of the most intriguing self-assembled motifs that has been extensively explored as a low molecular weight hydrogel for drug delivery, tissue engineering, imaging and techtonics, etc. is Phe-Phe (FF). The backbone of the dipeptide is very crucial for extending secondary structures in self-assembly, and any subtle change in the backbone drastically affect the molecular recognitions. The squaramide (SQ) motif has the unique advantage of hydrogen bonding which can promote the self-assembly process. In this work we have integrated the SQ unit into the dipeptide FF backbone to achieve molecular self-assembly. The resulting carbamate protected backbone modified dipeptide (BocFSAF-OH, 10) has exhibited molecular self-assembly with a fibrilar network. It formed a stable hydrogel (with CAC of 0.024 ± 0.0098 wt %) via the solvent switch method and was found to possess excellent enzymatic stability. The dipeptide and the resulting hydrogel were found to be cytocompatible. When integrated with a polysaccharide based biopolymer, e.g. sodium alginate, the resulting matrix exhibited strong hydrogel character. Therefore, the dipeptide hydrogel of 10 may find its applications in a variety of fields including drug delivery and tissue engineering.
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Affiliation(s)
- Suchita Dattatray Shinde
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
| | - Neeraj Kulkarni
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
| | - Bichismita Sahu
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
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4
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Hydrogels with intrinsic antibacterial activity prepared from naphthyl anthranilamide (NaA) capped peptide mimics. Sci Rep 2022; 12:22259. [PMID: 36564414 PMCID: PMC9789043 DOI: 10.1038/s41598-022-26426-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
In this study, we prepared antibacterial hydrogels through the self-assembly of naphthyl anthranilamide (NaA) capped amino acid based cationic peptide mimics. These ultra-short cationic peptide mimics were rationally designed with NaA as a capping group, L-phenylalanine, a short aliphatic linker, and a cationic group. The synthesized peptide mimics efficiently formed hydrogels with minimum gel concentrations between 0.1 and 0.3%w/v. The resulting hydrogels exhibited desirable viscoelastic properties which can be tuned by varying the cationic group, electronegative substituent, or counter anion. Importantly, nanofibers from the NaA-capped cationic hydrogels were found to be the source of hydrogels' potent bacteriacidal actvity against both Gram-positive and Gram-negative bacteria while remaining non-cytotoxic. These intrinsically antibacterial hydrogels are ideal candidates for further development in applications where bacterial contamination is problematic.
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5
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Makeiff D, Cho J, Godbert N, Smith B, Azyat K, Wagner A, Kulka M, Carlini R. Supramolecular gels from alkylated benzimidazolone derivatives. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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6
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Mayans E, Alemán C. Revisiting the Self-Assembly of Highly Aromatic Phenylalanine Homopeptides. Molecules 2020; 25:E6037. [PMID: 33419355 PMCID: PMC7766750 DOI: 10.3390/molecules25246037] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/14/2020] [Accepted: 12/18/2020] [Indexed: 02/06/2023] Open
Abstract
Diphenylalanine peptide (FF), which self-assembles into rigid tubular nanostructures, is a very short core recognition motif in Alzheimer's disease β-amyloid (Aβ) polypeptide. Moreover, the ability of the phenylalanine (F or Phe)-homopeptides to self-assemble into ordered nanostructures has been proved. Within this context it was shown that the assembly preferences of this family of compounds is altered by capping both the N- and C-termini using highly aromatic fluorenyl groups (i.e., fluorenyl-9-methoxycarbonyl and 9-fluorenylmethyl ester, named Fmoc and OFm, respectively). In this article the work performed in the field of the effect of the structure and incubation conditions on the morphology and polymorphism of short (from two to four amino acid residues) Phe-homopeptides is reviewed and accompanied by introducing some new results for completing the comparison. Special attention has been paid to the influence of solvent: co-solvent mixture used to solubilize the peptide, the peptide concentration and, in some cases, the temperature. More specifically, uncapped (FF, FFF, and FFFF), N-capped with Fmoc (Fmoc-FF, Fmoc-FFF, and Fmoc-FFFF), C-capped with OFm (FF-OFm), and doubly capped (Fmoc-FF-OFm, Fmoc-FFF-OFm, and Fmoc-FFFF-OFm) Phe-homopeptides have been re-measured. Although many of the experienced assembly conditions have been only revisited as they were previously reported, other experimental conditions have been examined by the first time in this work. In any case, pooling the effect of highly aromatic blocking groups in a single study, using a wide variety of experimental conditions, allows a perspective of how the disappearance of head-to-tail electrostatic interactions and the gradual increase in the amount of π-π stacking interactions, affects the morphology of the assemblies. Future technological applications of Phe-homopeptides can be envisaged by choosing the most appropriate self-assemble structure, defining not only the length of the peptide but also the amount and the position of fluorenyl capping groups.
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Affiliation(s)
| | - Carlos Alemán
- Departament d’Enginyeria Química and Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, EEBE, C/Eduard Maristany, 10-14, Ed. I2, 08019 Barcelona, Spain;
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7
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Koksal B, Onbas R, Baskurt M, Sahın H, Arslan Yildiz A, Yildiz UH. Boosting up printability of biomacromolecule based bio-ink by modulation of hydrogen bonding pairs. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.110070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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8
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Bellotto O, Kralj S, De Zorzi R, Geremia S, Marchesan S. Supramolecular hydrogels from unprotected dipeptides: a comparative study on stereoisomers and structural isomers. SOFT MATTER 2020; 16:10151-10157. [PMID: 32935720 DOI: 10.1039/d0sm01191f] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Amino acid stereoconfiguration has been shown to play a key role in the self-assembly of unprotected tripeptides into hydrogels under physiological conditions. Dramatic changes were noted for hydrophobic sequences based on the diphenylalanine motif from the formation of amorphous aggregates in the case of homochiral peptides to nanostructured and stable hydrogels in the case of heterochiral stereoisomers. Herein, we report that by further shortening the sequence to a dipeptide, the overall differences between isomers are less marked, with both homo- and hetero-chiral dipeptides forming gels, although with different stability over time. The soft materials are studied by a number of spectroscopic and microcopic techniques, and single-crystal X-ray diffraction to unveil the supramolecular interactions of these hydrogel building blocks.
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Affiliation(s)
- Ottavia Bellotto
- University of Trieste, Chem. Pharm. Sc. Dept., Via Giorgieri 1, 34127 Trieste, Italy.
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9
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Braun GA, Ary BE, Dear AJ, Rohn MCH, Payson AM, Lee DSM, Parry RC, Friedman C, Knowles TPJ, Linse S, Åkerfeldt KS. On the Mechanism of Self-Assembly by a Hydrogel-Forming Peptide. Biomacromolecules 2020; 21:4781-4794. [PMID: 33170649 DOI: 10.1021/acs.biomac.0c00989] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Self-assembling peptide-based hydrogels are a class of tunable soft materials that have been shown to be highly useful for a number of biomedical applications. The dynamic formation of the supramolecular fibrils that compose these materials has heretofore remained poorly characterized. A better understanding of this process would provide important insights into the behavior of these systems and could aid in the rational design of new peptide hydrogels. Here, we report the determination of the microscopic steps that underpin the self-assembly of a hydrogel-forming peptide, SgI37-49. Using theoretical models of linear polymerization to analyze the kinetic self-assembly data, we show that SgI37-49 fibril formation is driven by fibril-catalyzed secondary nucleation and that all the microscopic processes involved in SgI37-49 self-assembly display an enzyme-like saturation behavior. Moreover, this analysis allows us to quantify the rates of the underlying processes at different peptide concentrations and to calculate the time evolution of these reaction rates over the time course of self-assembly. We demonstrate here a new mechanistic approach for the study of self-assembling hydrogel-forming peptides, which is complementary to commonly used materials science characterization techniques.
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Affiliation(s)
- Gabriel A Braun
- Department of Chemistry, Haverford College, Haverford, Pennsylvania 19041, United States.,Department of Biochemistry and Structural Biology, Centre for Molecular Protein Science, Lund University, Lund SE-22100, Sweden
| | - Beatrice E Ary
- Department of Chemistry, Haverford College, Haverford, Pennsylvania 19041, United States
| | - Alexander J Dear
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.,Paulson School of Engineering and Applied Science, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Matthew C H Rohn
- Department of Chemistry, Haverford College, Haverford, Pennsylvania 19041, United States
| | - Abigail M Payson
- Department of Chemistry, Haverford College, Haverford, Pennsylvania 19041, United States
| | - David S M Lee
- Department of Chemistry, Haverford College, Haverford, Pennsylvania 19041, United States
| | - Robert C Parry
- Department of Chemistry, Haverford College, Haverford, Pennsylvania 19041, United States
| | - Connie Friedman
- Department of Chemistry, Haverford College, Haverford, Pennsylvania 19041, United States
| | - Tuomas P J Knowles
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.,Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, U.K
| | - Sara Linse
- Department of Biochemistry and Structural Biology, Centre for Molecular Protein Science, Lund University, Lund SE-22100, Sweden
| | - Karin S Åkerfeldt
- Department of Chemistry, Haverford College, Haverford, Pennsylvania 19041, United States
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10
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Das R, Gayakvad B, Shinde SD, Rani J, Jain A, Sahu B. Ultrashort Peptides—A Glimpse into the Structural Modifications and Their Applications as Biomaterials. ACS APPLIED BIO MATERIALS 2020; 3:5474-5499. [DOI: 10.1021/acsabm.0c00544] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Rudradip Das
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
| | - Bhavinkumar Gayakvad
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
| | - Suchita Dattatray Shinde
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
| | - Jyoti Rani
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
| | - Alok Jain
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
| | - Bichismita Sahu
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
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11
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Guest-responsive supramolecular hydrogels expressing selective sol–gel transition for sulfated glycosaminoglycans. Polym J 2020. [DOI: 10.1038/s41428-020-0341-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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Gupta S, Singh I, Sharma AK, Kumar P. Ultrashort Peptide Self-Assembly: Front-Runners to Transport Drug and Gene Cargos. Front Bioeng Biotechnol 2020; 8:504. [PMID: 32548101 PMCID: PMC7273840 DOI: 10.3389/fbioe.2020.00504] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 04/29/2020] [Indexed: 12/18/2022] Open
Abstract
The translational therapies to promote interaction between cell and signal come with stringent eligibility criteria. The chemically defined, hierarchically organized, and simpler yet blessed with robust intermolecular association, the peptides, are privileged to make the cut-off for sensing the cell-signal for biologics delivery and tissue engineering. The signature service and insoluble network formation of the peptide self-assemblies as hydrogels have drawn a spell of research activity among the scientists all around the globe in the past decades. The therapeutic peptide market players are anticipating promising growth opportunities due to the ample technological advancements in this field. The presence of the other organic moieties, enzyme substrates and well-established protecting groups like Fmoc and Boc etc., bring the best of both worlds. Since the large sequences of peptides severely limit the purification and their isolation, this article reviews the account of last 5 years' efforts on novel approaches for formulation and development of single molecule amino acids, ultra-short peptide self-assemblies (di- and tri- peptides only) and their derivatives as drug/gene carriers and tissue-engineering systems.
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Affiliation(s)
- Seema Gupta
- Chemistry Department, Acharya Narendra Dev College, University of Delhi, New Delhi, India
| | - Indu Singh
- Chemistry Department, Acharya Narendra Dev College, University of Delhi, New Delhi, India
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Ashwani K. Sharma
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Pradeep Kumar
- Nucleic Acids Research Laboratory, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
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13
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Sun B, Ariawan AD, Warren H, Goodchild SC, In Het Panhuis M, Ittner LM, Martin AD. Programmable enzymatic oxidation of tyrosine-lysine tetrapeptides. J Mater Chem B 2020; 8:3104-3112. [PMID: 32207762 DOI: 10.1039/d0tb00250j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ability to control the response of self-assembled systems upon exposure to external stimuli has been a long-standing goal of supramolecular chemistry. Short peptides are an attractive platform to realise this objective due to their chemical diversity and modular nature. Here, we synthesise a library of Fmoc-capped tetrapeptides, each containing two tyrosine and two lysine residues and varying in their amino acid sequence. Despite having similar secondary structure, these tetrapeptides form structures which are highly sequence dependent, yielding aggregates, nanofibres or monomers. This in turn highly affects the rate and degree of oxidative polymerisation by the enzyme tyrosinase, with self-assembled nanofibres exhibiting a greater degree of polymerisation. We monitor the formation of tyrosine oxidation products over time, finding that the precipitation of polymers is driven by quinone-based species. This affects the electrochemical properties of the oxidised peptide polymers, as determined through electrical impedance spectroscopy. Finally, intrinsic fluorescence microscale thermophoresis studies confirm that the degree of oxidative polymerisation is highly dependent on tyrosine solvent accessibility and the presence of peptide monomers. The ability to tune the kinetics of enzymatically active substrates and understand their polymerisation pathways on a molecular level is important for the creation of programmable, enzyme responsive biomaterials.
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Affiliation(s)
- Biyun Sun
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW 2109, Australia.
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14
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Mondal S, Das S, Nandi AK. A review on recent advances in polymer and peptide hydrogels. SOFT MATTER 2020; 16:1404-1454. [PMID: 31984400 DOI: 10.1039/c9sm02127b] [Citation(s) in RCA: 198] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this review, we focus on the very recent developments on the use of the stimuli responsive properties of polymer hydrogels for targeted drug delivery, tissue engineering, and biosensing utilizing their different optoelectronic properties. Besides, the stimuli-responsive hydrogels, the conducting polymer hydrogels are discussed, with specific attention to the energy generation and storage behavior of the xerogel derived from the hydrogel. The electronic and ionic conducting gels have been discussed that have applications in various electronic devices, e.g., organic field effect transistors, soft robotics, ionic skins, and sensors. The properties of polymer hybrid gels containing carbon nanomaterials have been exemplified here giving attention to applications in supercapacitors, dye sensitized solar cells, photocurrent switching, etc. Recent trends in the properties and applications of some natural polymer gels to produce thermal and acoustic insulating materials, drug delivery vehicles, self-healing material, tissue engineering, etc., are discussed. Besides the polymer gels, peptide gels of different dipeptides, tripeptides, oligopeptides, polypeptides, cyclic peptides, etc., are discussed, giving attention mainly to biosensing, bioimaging, and drug delivery applications. The properties of peptide-based hybrid hydrogels with polymers, nanoparticles, nucleotides, fullerene, etc., are discussed, giving specific attention to drug delivery, cell culture, bio-sensing, and bioimaging properties. Thus, the present review delineates, in short, the preparation, properties, and applications of different polymer and peptide hydrogels prepared in the past few years.
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Affiliation(s)
- Sanjoy Mondal
- Polymer Science Unit, School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India.
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15
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Aldilla VR, Chen R, Martin AD, Marjo CE, Rich AM, Black DS, Thordarson P, Kumar N. Anthranilamide-based Short Peptides Self-Assembled Hydrogels as Antibacterial Agents. Sci Rep 2020; 10:770. [PMID: 31964927 PMCID: PMC6972728 DOI: 10.1038/s41598-019-57342-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/23/2019] [Indexed: 12/26/2022] Open
Abstract
In this study, we describe the synthesis and molecular properties of anthranilamide-based short peptides which were synthesised via ring opening of isatoic anhydride in excellent yields. These short peptides were incorporated as low molecular weight gelators (LMWG), bola amphiphile, and C3-symmetric molecules to form hydrogels in low concentrations (0.07-0.30% (w/v)). The critical gel concentration (CGC), viscoelastic properties, secondary structure, and fibre morphology of these short peptides were influenced by the aromaticity of the capping group or by the presence of electronegative substituent (namely fluoro) and hydrophobic substituent (such as methyl) in the short peptides. In addition, the hydrogels showed antibacterial activity against S. aureus 38 and moderate toxicity against HEK cells in vitro.
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Affiliation(s)
- Vina R Aldilla
- School of Chemistry, UNSW Sydney NSW, Sydney, 2052, Australia
| | - Renxun Chen
- School of Chemistry, UNSW Sydney NSW, Sydney, 2052, Australia
| | - Adam D Martin
- Dementia Research Centre, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW, 2109, Australia.
| | - Christopher E Marjo
- Mark Wainwright Analytical Centre, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Anne M Rich
- Mark Wainwright Analytical Centre, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - David StC Black
- School of Chemistry, UNSW Sydney NSW, Sydney, 2052, Australia
| | - Pall Thordarson
- School of Chemistry, UNSW Sydney NSW, Sydney, 2052, Australia
| | - Naresh Kumar
- School of Chemistry, UNSW Sydney NSW, Sydney, 2052, Australia.
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16
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Martin AD, Thordarson P. Beyond Fmoc: a review of aromatic peptide capping groups. J Mater Chem B 2020; 8:863-877. [PMID: 31950969 DOI: 10.1039/c9tb02539a] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Self-assembling short peptides have attracted widespread interest due to their tuneable, biocompatible nature and have potential applications in energy materials, tissue engineering, sensing and drug delivery. The hierarchical self-assembly of these peptides is highly dependent on the selection of not only amino acid sequence, but also the capping group which is often employed at the N-terminus of the peptide to drive self-assembly. Although the Fmoc (9H-fluorenylmethyloxycarbonyl) group is commonly used due to its utility in solid phase peptide synthesis, many other aromatic capping groups have been reported which yield functional, responsive materials. This review explores recent developments in the utilisation of functional, aromatic capping groups beyond the Fmoc group for the creation of redox-responsive, fluorescent and drug delivering hydrogel scaffolds.
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Affiliation(s)
- Adam D Martin
- Dementia Research Centre, Department of Biomedical Science, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW 2109, Australia.
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, University of New South Wales, Sydney, NSW 2052, Australia.
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17
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Arakawa H, Takeda K, Higashi SL, Shibata A, Kitamura Y, Ikeda M. Self-assembly and hydrogel formation ability of Fmoc-dipeptides comprising α-methyl-L-phenylalanine. Polym J 2020. [DOI: 10.1038/s41428-019-0301-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
AbstractVarious biofunctional hydrogel materials can be fabricated in aqueous media through the self-assembly of peptide derivatives, forming supramolecular nanostructures and their three-dimensional networks. In this study, we describe the self-assembly of new Fmoc-dipeptides comprising α-methyl-L-phenylalanine. We found that the position and number of methyl groups introduced onto the α carbons of the Fmoc-dipeptides by α-methyl-L-phenylalanine have a marked influence on the morphology of the supramolecular nanostructure as well as the hydrogel (network) formation ability.
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18
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Rivas M, Del Valle LJ, Alemán C, Puiggalí J. Peptide Self-Assembly into Hydrogels for Biomedical Applications Related to Hydroxyapatite. Gels 2019; 5:E14. [PMID: 30845674 PMCID: PMC6473879 DOI: 10.3390/gels5010014] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 02/19/2019] [Accepted: 02/25/2019] [Indexed: 01/02/2023] Open
Abstract
Amphiphilic peptides can be self-assembled by establishing physical cross-links involving hydrogen bonds and electrostatic interactions with divalent ions. The derived hydrogels have promising properties due to their biocompatibility, reversibility, trigger capability, and tunability. Peptide hydrogels can mimic the extracellular matrix and favor the growth of hydroxyapatite (HAp) as well as its encapsulation. Newly designed materials offer great perspectives for applications in the regeneration of hard tissues such as bones, teeth, and cartilage. Furthermore, development of drug delivery systems based on HAp and peptide self-assembly is attracting attention.
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Affiliation(s)
- Manuel Rivas
- Chemical Engineering Department, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
| | - Luís J Del Valle
- Chemical Engineering Department, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
| | - Carlos Alemán
- Chemical Engineering Department, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
| | - Jordi Puiggalí
- Chemical Engineering Department, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
- Barcelona Research Center for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Escola d'Enginyeria de Barcelona Est-EEBE, c/Eduard Maristany 10-14, 08019 Barcelona, Spain.
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19
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Cross ER, Adams DJ. Probing the self-assembled structures and pK a of hydrogels using electrochemical methods. SOFT MATTER 2019; 15:1522-1528. [PMID: 30681698 DOI: 10.1039/c8sm02430h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The surface chemistry of the aggregated structures that form the scaffold in self-assembled hydrogels - their charge, hydrophobicity and ion-binding dynamics - plays an important role in determining the gel properties and the gel's suitability for specific applications. However, there are limited methods available for the study of this surface chemistry. Here, we show that electrochemical techniques can be used to measure the surface chemical properties of the self-assembled aggregate structures and also to determine the pKa of the gelators. We also provide a method to quickly determine whether a functionalised-dipeptide will form a gel or not. This method has scope for use in high-throughput screening and further complex pH-triggered self-assembled gelation systems.
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Affiliation(s)
- Emily R Cross
- School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK.
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20
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Guo K, Zhang L, Lin S, Li Y, Li B, Yang Y. A “center-determination” phenomenon of C 13H 27CO-Gly-Ala-Ala lipotripetides: relationship between the molecular chirality and handedness of organic self-assemblies. NEW J CHEM 2019. [DOI: 10.1039/c9nj01693g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The chirality of the central alanine residue dominates the handedness of molecular packing and that of organic self-assemblies.
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Affiliation(s)
- Kexiao Guo
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- Department of Polymer Science and Engineering
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Lianglin Zhang
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- Department of Polymer Science and Engineering
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Shuwei Lin
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- Department of Polymer Science and Engineering
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Yi Li
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- Department of Polymer Science and Engineering
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Baozong Li
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- Department of Polymer Science and Engineering
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Yonggang Yang
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- Department of Polymer Science and Engineering
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
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21
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Iglesias D, Melle-Franco M, Kurbasic M, Melchionna M, Abrami M, Grassi M, Prato M, Marchesan S. Oxidized Nanocarbons-Tripeptide Supramolecular Hydrogels: Shape Matters! ACS NANO 2018; 12:5530-5538. [PMID: 29787672 DOI: 10.1021/acsnano.8b01182] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Short peptide hydrogels are attractive biomaterials but typically suffer from limited mechanical properties. Inclusion of other nanomaterials can serve the dual purpose of hydrogel reinforcement and of conferring additional physicochemical properties ( e. g., self-healing, conductivity), as long as they do not hamper peptide self-assembly. In particular, nanocarbons are ideal candidates, and their physicochemical properties have demonstrated great potential in nanocarbon-polymer gel biomaterials for tissue engineering or drug delivery. Recently, increasing interest in supramolecular hydrogels drove research also on their enhancement with nanocarbons. However, little is known on the effect of nanocarbon morphology on the self-assembly of short peptides, which are among the most popular hydrogel building blocks. In this work, three different oxidized nanocarbons ( i. e., carbon nanotube or CNT as 1D material, graphene oxide sheet or GO as 2D material, and carbon nanohorn or CNH as 3D material) were evaluated for their effects on the self-assembly of the unprotected tripeptide Leu-DPhe-DPhe at physiological conditions. Supramolecular hydrogels were obtained in all cases, and viscoelastic properties were clearly affected by the nanocarbons, which increased stiffness and resistance to applied stress. Notably, self-healing behavior was observed only in the case of CNTs. Tripeptide-nanotube interaction was noted already in solution prior to self-assembly, with the tripeptide acting as a dispersing agent in phosphate buffer. Experimental and in silico investigation of the interaction between peptide and CNTs suggests that the latter acts as nucleation templates for self-assembly and reassembly. Overall, we provide useful insights for the future design of composite biomaterials with acquired properties.
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Affiliation(s)
- Daniel Iglesias
- Dipartimento di Scienze Chimiche e Farmaceutiche , Università di Trieste , Via L. Giorgieri 1 , 34127 Trieste , Italy
| | | | - Marina Kurbasic
- Dipartimento di Scienze Chimiche e Farmaceutiche , Università di Trieste , Via L. Giorgieri 1 , 34127 Trieste , Italy
| | - Michele Melchionna
- Dipartimento di Scienze Chimiche e Farmaceutiche , Università di Trieste , Via L. Giorgieri 1 , 34127 Trieste , Italy
| | - Michela Abrami
- Dipartimento di Ingegneria e Architettura , Università di Trieste , V. Valerio 6/1 , 34127 Trieste , Italy
| | - Mario Grassi
- Dipartimento di Ingegneria e Architettura , Università di Trieste , V. Valerio 6/1 , 34127 Trieste , Italy
| | - Maurizio Prato
- Dipartimento di Scienze Chimiche e Farmaceutiche , Università di Trieste , Via L. Giorgieri 1 , 34127 Trieste , Italy
- Carbon Nanobiotechnology Laboratory , CIC biomaGUNE , Paseo de Miramón 182 , 20009 Donostia-San Sebastian , Spain
- Basque Foundation for Science , Ikerbasque , Bilbao 48013 , Spain
| | - Silvia Marchesan
- Dipartimento di Scienze Chimiche e Farmaceutiche , Università di Trieste , Via L. Giorgieri 1 , 34127 Trieste , Italy
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22
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Hassan M, Martin AD, Thordarson P. Engineering Biocompatible Scaffolds through the Design of Elastin‐Based Short Peptides. Chempluschem 2018; 83:47-52. [DOI: 10.1002/cplu.201700493] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 01/04/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Musfizur Hassan
- School of Chemistry The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology The University of New South Wales Sydney NSW 2052 Australia
| | - Adam D. Martin
- School of Chemistry The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology The University of New South Wales Sydney NSW 2052 Australia
| | - Pall Thordarson
- School of Chemistry The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology The University of New South Wales Sydney NSW 2052 Australia
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23
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Aldilla VR, Martin AD, Nizalapur S, Marjo CE, Rich AM, Ho KKK, Ittner LM, Black DS, Thordarson P, Kumar N. Glyoxylamide-based self-assembly hydrogels for sustained ciprofloxacin delivery. J Mater Chem B 2018; 6:6089-6098. [DOI: 10.1039/c8tb01290c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Glyoxylamide-based hydrogels have high ciprofloxacin (CIP) loading capacity and demonstrate a sustained release profile of over 15 days.
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Affiliation(s)
| | - Adam D. Martin
- School of Chemistry
- UNSW
- Sydney
- Australia
- The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
| | | | | | - Anne M. Rich
- Mark Wainwright Analytical Centre
- UNSW
- Sydney
- Australia
| | | | - Lars M. Ittner
- Dementia Research Unit
- School of Medical Sciences
- UNSW
- Sydney
- Australia
| | | | - Pall Thordarson
- School of Chemistry
- UNSW
- Sydney
- Australia
- The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
| | - Naresh Kumar
- School of Chemistry
- UNSW
- Sydney
- Australia
- The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science & Technology
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24
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Pizzi A, Demitri N, Terraneo G, Metrangolo P. Halogen bonding at the wet interfaces of an amyloid peptide structure. CrystEngComm 2018. [DOI: 10.1039/c8ce01205a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Halogenation is a promising tool to stabilize – through halogen bonds – the wet interface of amyloid structures.
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Affiliation(s)
- Andrea Pizzi
- Laboratory of Supramolecular and Bio-Nanomaterials (SBNLab)
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- Milano I-20131
- Italy
| | - Nicola Demitri
- Elettra – Sincrotrone Trieste
- 34149 Basovizza – Trieste
- Italy
| | - Giancarlo Terraneo
- Laboratory of Supramolecular and Bio-Nanomaterials (SBNLab)
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- Milano I-20131
- Italy
| | - Pierangelo Metrangolo
- Laboratory of Supramolecular and Bio-Nanomaterials (SBNLab)
- Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”
- Politecnico di Milano
- Milano I-20131
- Italy
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25
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Jones CL, Marsden EA, Nevin AC, Kariuki BM, Bhadbhade MM, Martin AD, Easun TL. Investigating the geometrical preferences of a flexible benzimidazolone-based linker in the synthesis of coordination polymers. ROYAL SOCIETY OPEN SCIENCE 2017; 4:171064. [PMID: 29308246 PMCID: PMC5750013 DOI: 10.1098/rsos.171064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 10/31/2017] [Indexed: 06/07/2023]
Abstract
A series of new group 2 coordination polymers, MgL ={MgL(H2O)(DMF)0.75}∞, CaL = {CaL(DMF)2}∞, SrL = {SrL(H2O)0.5}∞ and BaL = {BaL(H2O)0.5}∞, were synthesized using a flexible benzimidazolone diacetic acid linker (H2L) in which the two carboxylic acid binding sites are connected to a planar core via {-CH2-} spacers that can freely rotate in solution. In a 'curiosity-led' diversion from group 2 metals, the first row transition metal salts Mn2+, Cu2+ and Zn2+ were also reacted with L to yield crystals of MnL = {MnL(DMF)(H2O)3.33}∞, Cu3L2 = {Cu3L2(DMF)2(CHO2)2}∞ and ZnL = {ZnL(DMF)}∞. Crystal structures were obtained for all seven materials. All structures form as two-dimensional sheets and contain six-coordinate centres, with the exception of ZnL, which displays tetrahedrally coordinated metal centres, and Cu3L2 , which contains square planar coordinated metal centres and Cu paddle-wheels. In each structure, the linker adopts one of two distinct conformations, with the carboxylate groups either cis or trans with respect to the planar core. All materials were also characterized by powder X-ray diffraction and thermogravimetric analysis.
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Affiliation(s)
- Corey L. Jones
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK
| | - Elizabeth A. Marsden
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK
| | - Adam C. Nevin
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK
| | - Benson M. Kariuki
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK
| | - Mohan M. Bhadbhade
- School of Chemistry, Mark Wainwright Analytical Centre, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Adam D. Martin
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Timothy L. Easun
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK
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26
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Nelli SR, Chakravarthy RD, Xing YM, Weng JP, Lin HC. Self-assembly of single amino acid/pyrene conjugates with unique structure-morphology relationship. SOFT MATTER 2017; 13:8402-8407. [PMID: 29077128 DOI: 10.1039/c7sm01669g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This article describes the self-assembly of π-conjugated building blocks composed of single amino acid and pyrene (Py) moieties. In aqueous conditions, the Py-capped amino acids undergo self-assembly through various non-covalent interactions such as hydrogen-bonding, π-π stacking as well as electrostatic interactions to form supramolecular nanostructures in acidic and basic conditions. Interestingly, we found that the blend of different Py-gelators with oppositely charged amino acids (Py-Glu and Py-Lys) displays unique nano-structural morphologies and gelation properties of the resulting hydrogels at physiological pH when compared with single Py conjugates, which was attributed to additional electrostatic interactions. Overall, this report illustrates the importance of two-component supramolecular co-assembled hydrogels and their structure-morphology relationship, improved mechanical properties, and biocompatibility and thus provides a new insight into the design of self-assembled nanomaterials.
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Affiliation(s)
- Srinivasa Rao Nelli
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, 30010, Taiwan, Republic of China.
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27
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Zanna N, Tomasini C. Peptide-Based Physical Gels Endowed with Thixotropic Behaviour. Gels 2017; 3:E39. [PMID: 30920535 PMCID: PMC6318593 DOI: 10.3390/gels3040039] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 10/18/2017] [Indexed: 01/30/2023] Open
Abstract
Thixotropy is one of the oldest documented rheological phenomenon in colloid science and may be defined as an increase of viscosity in a state of rest and a decrease of viscosity when submitted to a constant shearing stress. This behavior has been exploited in recent years to prepare injectable hydrogels for application in drug delivery systems. Thixotropic hydrogels may be profitably used in the field of regenerative medicine, which promotes tissue healing after injuries and diseases, as the molten hydrogel may be injected by syringe and then self-adapts in the space inside the injection site and recovers the solid form. We will focus our attention on the preparation, properties, and some applications of biocompatible thixotropic hydrogels.
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Affiliation(s)
- Nicola Zanna
- Dipartimento di Chimica "Giacomo Ciamician"-Alma Mater Studiorum Università di Bologna-Via Selmi, 2-40126 Bologna, Italy.
| | - Claudia Tomasini
- Dipartimento di Chimica "Giacomo Ciamician"-Alma Mater Studiorum Università di Bologna-Via Selmi, 2-40126 Bologna, Italy.
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28
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Matsumoto Y, Shundo A, Ohno M, Tsuruzoe N, Goto M, Tanaka K. Evolution of heterogeneity accompanying sol-gel transitions in a supramolecular hydrogel. SOFT MATTER 2017; 13:7433-7440. [PMID: 28967654 DOI: 10.1039/c7sm01612c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
When a peptide amphiphile is dispersed in water, it self-assembles into a fibrous network, leading to a supramolecular hydrogel. When the gel is physically disrupted by shaking, it transforms into a sol state. After aging at room temperature for a while, it spontaneously returns to the gel state, called sol-gel transition. However, repeating the sol-gel transition often causes a change in the rheological properties of the gel. To gain a better understanding of the sol-gel transition and its reversibility, we herein examined the thermal motion of probe particles at different locations in a supramolecular hydrogel. The sol obtained by shaking the gel was heterogeneous in terms of the rheological properties and the extent decreased with increasing aging time. This time course of heterogeneity, or homogeneity, which corresponded to the sol-to-gel transition, was observed for the 1st cycle. However, this was not the case for the 2nd and 3rd cycles; the heterogeneity was preserved even after aging. Fourier-transform infrared spectroscopy, small-angle X-ray scattering, and atomic force and confocal laser scanning microscopies revealed that, although the molecular aggregation states of amphiphiles both in the gel and sol remained unchanged with the cycles, the fibril density diversified to high and low density regions even after aging. The tracking of particles with different sizes indicated that the partial mesh size in the high density region and the characteristic length scale of the density fluctuation were smaller than 50 nm and 6 μm, respectively.
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Affiliation(s)
- Yuji Matsumoto
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan.
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29
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Yuan T, Fei J, Xu Y, Yang X, Li J. Stimuli-Responsive Dipeptide-Protein Hydrogels through Schiff Base Coassembly. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700408] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 07/18/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Tingting Yuan
- Beijing National Laboratory for Molecular Sciences; CAS Key Lab of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Zhonguancun Beijing 100190 China
- School of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing 100049 China
| | - Jinbo Fei
- Beijing National Laboratory for Molecular Sciences; CAS Key Lab of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Zhonguancun Beijing 100190 China
| | - Youqian Xu
- Beijing National Laboratory for Molecular Sciences; CAS Key Lab of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Zhonguancun Beijing 100190 China
- School of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing 100049 China
| | - Xiaoke Yang
- Beijing National Laboratory for Molecular Sciences; CAS Key Lab of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Zhonguancun Beijing 100190 China
- School of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing 100049 China
| | - Junbai Li
- Beijing National Laboratory for Molecular Sciences; CAS Key Lab of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Zhonguancun Beijing 100190 China
- School of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing 100049 China
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30
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Hashemnejad SM, Kundu S. Probing Gelation and Rheological Behavior of a Self-Assembled Molecular Gel. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:7769-7779. [PMID: 28715639 DOI: 10.1021/acs.langmuir.7b01531] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Molecular gels have been investigated over the last few decades; however, mechanical behavior of these self-assembled gels is not well understood, particularly how these materials fail at large strain. Here, we report the gelation and rheological behavior of a molecular gel formed by self-assembly of a low molecular weight gelator (LMWG), di-Fmoc-l-lysine, in 1-propanol/water mixture. Gels were prepared by solvent-triggered technique, and gelation was tracked using Fourier transform infrared (FTIR) spectroscopy and shear rheology. FTIR spectroscopy captures the formation of hydrogen bonding between the gelator molecules, and the change in IR spectra during the gelation process correlates with the gelation kinetics results captured by rheology. Self-assembly of gelator molecules leads to a fiber-like structure, and these long fibers topologically interact to form a gel-like material. Stretched-exponential function can capture the stress-relaxation data. Stress-relaxation time for these gels have been found to be long owing to long fiber dimensions, and the stretching exponent value of 1/3 indicates polydispersity in fiber dimensions. Cavitation rheology captures fracture-like behavior of these gels, and critical energy release rate has been estimated to be of the order 0.1 J/m2. Our results provide new understanding of the rheological behavior of molecular gels and their structural origin.
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Affiliation(s)
- Seyed Meysam Hashemnejad
- Dave C. Swalm School of Chemical Engineering, Mississippi State University , Mississippi State, Mississippi 39762, United States
| | - Santanu Kundu
- Dave C. Swalm School of Chemical Engineering, Mississippi State University , Mississippi State, Mississippi 39762, United States
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31
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Kurbasic M, Romano CD, Garcia AM, Kralj S, Marchesan S. Assembly of a Tripeptide and Anti-Inflammatory Drugs into Supramolecular Hydrogels for Sustained Release. Gels 2017; 3:E29. [PMID: 30920525 PMCID: PMC6318665 DOI: 10.3390/gels3030029] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 07/29/2017] [Accepted: 07/30/2017] [Indexed: 11/17/2022] Open
Abstract
Supramolecular hydrogels offer interesting opportunities for co-assembly with drugs towards sustained release over time, which could be achieved given that the drug participates in the hydrogel nanostructure, and it is not simply physically entrapped within the gel matrix. dLeu-Phe-Phe is an attractive building block of biomaterials in light of the peptide's inherent biocompatibility and biodegradability. This study evaluates the assembly of the tripeptide in the presence of either of the anti-inflammatory drugs ketoprofen or naproxen at levels analogous to commercial gel formulations. Fourier-transformed infrared (FT-IR), circular dichroism, Thioflavin T fluorescence, transmission electron microscopy (TEM), and oscillatory rheometry are used. Drug release over time is monitored by means of reverse-phase high performance liquid chromatography, and shows different kinetics for the two drugs.
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Affiliation(s)
- Marina Kurbasic
- Chemical & Pharmaceutical Sciences Department, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy.
| | - Chiara D Romano
- Chemical & Pharmaceutical Sciences Department, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy.
| | - Ana M Garcia
- Chemical & Pharmaceutical Sciences Department, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy.
| | - Slavko Kralj
- Chemical & Pharmaceutical Sciences Department, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy.
- Materials Synthesis Department, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.
| | - Silvia Marchesan
- Chemical & Pharmaceutical Sciences Department, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy.
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Martin AD, Wojciechowski JP, Robinson AB, Heu C, Garvey CJ, Ratcliffe J, Waddington LJ, Gardiner J, Thordarson P. Controlling self-assembly of diphenylalanine peptides at high pH using heterocyclic capping groups. Sci Rep 2017; 7:43947. [PMID: 28272523 PMCID: PMC5341053 DOI: 10.1038/srep43947] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 02/01/2017] [Indexed: 01/03/2023] Open
Abstract
Using small angle neutron scattering (SANS), it is shown that the existence of pre-assembled structures at high pH for a capped diphenylalanine hydrogel is controlled by the selection of N-terminal heterocyclic capping group, namely indole or carbazole. At high pH, changing from a somewhat hydrophilic indole capping group to a more hydrophobic carbazole capping group results in a shift from a high proportion of monomers to self-assembled fibers or wormlike micelles. The presence of these different self-assembled structures at high pH is confirmed through NMR and circular dichroism spectroscopy, scanning probe microscopy and cryogenic transmission electron microscopy.
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Affiliation(s)
- Adam D. Martin
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre for Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Jonathan P. Wojciechowski
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre for Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Andrew B. Robinson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre for Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Celine Heu
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre for Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, NSW, 2052, Australia
- Biomedical Imaging Facility (BMIF), Mark Wainwright Analytical Centre, University of New South Wales, Sydney NSW, 2052, Australia
| | - Christopher J. Garvey
- Australian Nuclear Science and Technology Organisation, New Illawarra Rd, Lucas Heights, NSW, 2231, Australia
| | - Julian Ratcliffe
- CSIRO Manufacturing, Bayview Ave, Clayton, Victoria 3168, Australia
| | | | - James Gardiner
- CSIRO Manufacturing, Bayview Ave, Clayton, Victoria 3168, Australia
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre for Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, NSW, 2052, Australia
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Aldilla VR, Nizalapur S, Martin A, Marjo CE, Rich A, Yee E, Suwannakot P, Black DS, Thordarson P, Kumar N. Design, synthesis, and characterisation of glyoxylamide-based short peptides as self-assembled gels. NEW J CHEM 2017. [DOI: 10.1039/c7nj02248d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
First example of glyoxylamide-based short peptides which can encapsulate organic solvents and water at relatively low concentrations.
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Affiliation(s)
| | | | - Adam Martin
- School of Chemistry
- UNSW Australia
- Sydney
- Australia
| | - Chris E. Marjo
- Mark Wainwright Analytical Centre
- UNSW Australia
- Sydney NSW 2052
- Australia
| | - Anne Rich
- Mark Wainwright Analytical Centre
- UNSW Australia
- Sydney NSW 2052
- Australia
| | - Eugene Yee
- School of Chemistry
- UNSW Australia
- Sydney
- Australia
| | | | | | | | - Naresh Kumar
- School of Chemistry
- UNSW Australia
- Sydney
- Australia
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Feicht SE, Khair AS. A mathematical model for electrical impedance spectroscopy of zwitterionic hydrogels. SOFT MATTER 2016; 12:7028-7037. [PMID: 27464763 DOI: 10.1039/c6sm01445c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report a mathematical model for ion transport and electrical impedance in zwitterionic hydrogels, which possess acidic and basic functional groups that carry a net charge at a pH not equal to the isoelectric point. Such hydrogels can act as an electro-mechanical interface between a relatively hard biosensor and soft tissue in the body. For this application, the electrical impedance of the hydrogel must be characterized to ensure that ion transport to the biosensor is not significantly hindered. The electrical impedance is the ratio of the applied voltage to the measured current. We consider a simple model system, wherein an oscillating voltage is applied across a hydrogel immersed in electrolyte and sandwiched between parallel, blocking electrodes. We employ the Poisson-Nernst-Planck (PNP) equations coupled with acid-base dissociation reactions for the charge on the hydrogel backbone to model the ionic transport across the hydrogel. The electrical impedance is calculated from the numerical solution to the PNP equations and subsequently analyzed via an equivalent circuit model to extract the hydrogel capacitance, resistance, and the capacitance of electrical double layers at the electrode-hydrogel interface. For example, we predict that an increase in pH from the isoelectric point, pH = 6.4 for a model PCBMA hydrogel, to pH = 8 reduces the resistance of the hydrogel by ∼40% and increases the double layer capacitance by ∼250% at an electrolyte concentration of 0.1 mM. The significant impact of charged hydrogel functional groups to the impedance is damped at higher electrolyte concentration.
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Affiliation(s)
- Sarah E Feicht
- Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
| | - Aditya S Khair
- Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
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