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Najafi H, Farahavar G, Jafari M, Abolmaali SS, Azarpira N, Tamaddon AM. Harnessing the Potential of Self-Assembled Peptide Hydrogels for Neural Regeneration and Tissue Engineering. Macromol Biosci 2024; 24:e2300534. [PMID: 38547473 DOI: 10.1002/mabi.202300534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 03/04/2024] [Indexed: 04/11/2024]
Abstract
Spinal cord injury, traumatic brain injury, and neurosurgery procedures usually lead to neural tissue damage. Self-assembled peptide (SAP) hydrogels, a type of innovative hierarchical nanofiber-forming peptide sequences serving as hydrogelators, have emerged as a promising solution for repairing tissue defects and promoting neural tissue regeneration. SAPs possess numerous features, such as adaptable morphologies, biocompatibility, injectability, tunable mechanical stability, and mimicking of the native extracellular matrix. This review explores the capacity of neural cell regeneration and examines the critical aspects of SAPs in neuroregeneration, including their biochemical composition, topology, mechanical behavior, conductivity, and degradability. Additionally, it delves into the latest strategies involving SAPs for central or peripheral neural tissue engineering. Finally, the prospects of SAP hydrogel design and development in the realm of neuroregeneration are discussed.
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Affiliation(s)
- Haniyeh Najafi
- Pharmaceutical Nanotechnology Department, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
| | - Ghazal Farahavar
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
| | - Mahboobeh Jafari
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
| | - Samira Sadat Abolmaali
- Pharmaceutical Nanotechnology Department, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
| | - Negar Azarpira
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, 71937-11351, Iran
| | - Ali Mohammad Tamaddon
- Pharmaceutical Nanotechnology Department, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
- Department of Pharmaceutics, Shiraz University of Medical Sciences, Shiraz, 71468-64685, Iran
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2
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Edri R, Fisher S, Menor-Salvan C, Williams LD, Frenkel-Pinter M. Assembly-driven protection from hydrolysis as key selective force during chemical evolution. FEBS Lett 2023; 597:2879-2896. [PMID: 37884438 DOI: 10.1002/1873-3468.14766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/07/2023] [Accepted: 09/21/2023] [Indexed: 10/28/2023]
Abstract
The origins of biopolymers pose fascinating questions in prebiotic chemistry. The marvelous assembly proficiencies of biopolymers suggest they are winners of a competitive evolutionary process. Sophisticated molecular assembly is ubiquitous in life where it is often emergent upon polymerization. We focus on the influence of molecular assembly on hydrolysis rates in aqueous media and suggest that assembly was crucial for biopolymer selection. In this model, incremental enrichment of some molecular species during chemical evolution was partially driven by the interplay of kinetics of synthesis and hydrolysis. We document a general attenuation of hydrolysis by assembly (i.e., recalcitrance) for all universal biopolymers and highlight the likely role of assembly in the survival of the 'fittest' molecules during chemical evolution.
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Affiliation(s)
- Rotem Edri
- Institute of Chemistry, The Hebrew University of Jerusalem, Israel
- The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Israel
| | - Sarah Fisher
- Institute of Chemistry, The Hebrew University of Jerusalem, Israel
- The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Israel
| | - Cesar Menor-Salvan
- Department of Biología de Sistemas, Universidad de Alcalá, Madrid, Spain
| | - Loren Dean Williams
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, USA
- Center for the Origins of Life, Georgia Institute of Technology, Atlanta, GA, USA
| | - Moran Frenkel-Pinter
- Institute of Chemistry, The Hebrew University of Jerusalem, Israel
- The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Israel
- Center for the Origins of Life, Georgia Institute of Technology, Atlanta, GA, USA
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3
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Sharma P, Roy S. Designing ECM-inspired supramolecular scaffolds by utilizing the interactions between a minimalistic neuroactive peptide and heparin. NANOSCALE 2023; 15:7537-7558. [PMID: 37022122 DOI: 10.1039/d2nr06221f] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Short bioactive peptide-based supramolecular hydrogels are emerging as interesting candidates for developing scaffolds for tissue engineering applications. However, proteins and peptides represent only a single class of molecules present in the native ECM, thus, recapitulating the complete ECM microenvironment via only peptide-based biomaterials is extremely challenging. In this direction, complex multicomponent-based biomaterials have started gaining importance for achieving the biofunctional complexity and structural hierarchy of the native ECM. Sugar-peptide complexes can be explored in this direction as they provide essential biological signaling required for cellular growth and survival in vivo. In this direction, we explored the fabrication of an advanced scaffold by employing heparin and short bioactive peptide interactions at the molecular level. Interestingly, the addition of heparin into the peptide has significantly modulated the supramolecular organization, nanofibrous morphology and the mechanical properties of the scaffold. Additionally, the combined hydrogels demonstrated superior biocompatibility as compared to the peptide counterpart at certain ratios. These newly developed scaffolds were also observed to be stable under 3-D cell culture conditions and supported cellular adhesion and proliferation. Most importantly, the inflammatory response was also minimized in the case of combined hydrogels as compared to heparin. We expect that this approach of using simple non-covalent interactions between the ECM-inspired small molecules to fabricate biomaterials with improved mechanical and biological properties could advance the current knowledge on designing ECM mimetic biomaterials. Such an attempt would create a novel, adaptable and simplistic bottom-up strategy for the invention of new and more complex biomaterials of ECM origin with advanced functions.
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Affiliation(s)
- Pooja Sharma
- Institute of Nano Science and Technology, Sector-81, Knowledge City, Sahibzada Ajit Singh Nagar, Punjab, Pin - 140306, India.
| | - Sangita Roy
- Institute of Nano Science and Technology, Sector-81, Knowledge City, Sahibzada Ajit Singh Nagar, Punjab, Pin - 140306, India.
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4
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Ligorio C, Mata A. Synthetic extracellular matrices with function-encoding peptides. NATURE REVIEWS BIOENGINEERING 2023; 1:1-19. [PMID: 37359773 PMCID: PMC10127181 DOI: 10.1038/s44222-023-00055-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 03/16/2023] [Indexed: 06/28/2023]
Abstract
The communication of cells with their surroundings is mostly encoded in the epitopes of structural and signalling proteins present in the extracellular matrix (ECM). These peptide epitopes can be incorporated in biomaterials to serve as function-encoding molecules to modulate cell-cell and cell-ECM interactions. In this Review, we discuss natural and synthetic peptide epitopes as molecular tools to bioengineer bioactive hydrogel materials. We present a library of functional peptide sequences that selectively communicate with cells and the ECM to coordinate biological processes, including epitopes that directly signal to cells, that bind ECM components that subsequently signal to cells, and that regulate ECM turnover. We highlight how these epitopes can be incorporated in different biomaterials as individual or multiple signals, working synergistically or additively. This molecular toolbox can be applied in the design of biomaterials aimed at regulating or controlling cellular and tissue function, repair and regeneration.
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Affiliation(s)
- Cosimo Ligorio
- Biodiscovery Institute, University of Nottingham, Nottingham, UK
- Department of Chemical and Environmental Engineering, University of Nottingham, Nottingham, UK
| | - Alvaro Mata
- Biodiscovery Institute, University of Nottingham, Nottingham, UK
- Department of Chemical and Environmental Engineering, University of Nottingham, Nottingham, UK
- School of Pharmacy, University of Nottingham, Nottingham, UK
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5
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C M, Frenkel-Pinter M, Smith KH, Rivera-Santana VF, Sargon AB, Jacobson KC, Guzman-Martinez A, Williams LD, Leman LJ, Liotta CL, Grover MA, Hud NV. Water-Based Dynamic Depsipeptide Chemistry: Building Block Recycling and Oligomer Distribution Control Using Hydration-Dehydration Cycles. JACS AU 2022; 2:1395-1404. [PMID: 35783166 PMCID: PMC9241005 DOI: 10.1021/jacsau.2c00087] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/31/2022] [Accepted: 04/27/2022] [Indexed: 06/15/2023]
Abstract
The high kinetic barrier to amide bond formation has historically placed narrow constraints on its utility in reversible chemistry applications. Slow kinetics has limited the use of amides for the generation of diverse combinatorial libraries and selection of target molecules. Current strategies for peptide-based dynamic chemistries require the use of nonpolar co-solvents or catalysts or the incorporation of functional groups that facilitate dynamic chemistry between peptides. In light of these limitations, we explored the use of depsipeptides: biorelevant copolymers of amino and hydroxy acids that would circumvent the challenges associated with dynamic peptide chemistry. Here, we describe a model system of N-(α-hydroxyacyl)-amino acid building blocks that reversibly polymerize to form depsipeptides when subjected to two-step evaporation-rehydration cycling under moderate conditions. The hydroxyl groups of these units allow for dynamic ester chemistry between short peptide segments through unmodified carboxyl termini. Selective recycling of building blocks is achieved by exploiting the differential hydrolytic lifetimes of depsipeptide amide and ester bonds, which we show are controllable by adjusting the solution pH, temperature, and time as well as the building blocks' side chains. We demonstrate that the polymerization and breakdown of the depsipeptides are facilitated by cyclic morpholinedione intermediates, and further show how structural properties dictate half-lives and product oligomer distributions using multifunctional building blocks. These results establish a cyclic mode of ester-based reversible depsipeptide formation that temporally separates the polymerization and depolymerization steps for the building blocks and may have implications for prebiotic polymer chemical evolution.
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Affiliation(s)
- Martin C
- NSF/NASA
Center for Chemical Evolution, Atlanta, Georgia 30332, United States
- School
of Chemistry & Biochemistry, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Moran Frenkel-Pinter
- NSF/NASA
Center for Chemical Evolution, Atlanta, Georgia 30332, United States
- School
of Chemistry & Biochemistry, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Kelvin H. Smith
- NSF/NASA
Center for Chemical Evolution, Atlanta, Georgia 30332, United States
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | | | - Alyssa B. Sargon
- NSF/NASA
Center for Chemical Evolution, Atlanta, Georgia 30332, United States
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Kaitlin C. Jacobson
- NSF/NASA
Center for Chemical Evolution, Atlanta, Georgia 30332, United States
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | | | - Loren Dean Williams
- NSF/NASA
Center for Chemical Evolution, Atlanta, Georgia 30332, United States
- School
of Chemistry & Biochemistry, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Luke J. Leman
- NSF/NASA
Center for Chemical Evolution, Atlanta, Georgia 30332, United States
- Department
of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Charles L. Liotta
- NSF/NASA
Center for Chemical Evolution, Atlanta, Georgia 30332, United States
- School
of Chemistry & Biochemistry, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Martha A. Grover
- NSF/NASA
Center for Chemical Evolution, Atlanta, Georgia 30332, United States
- School
of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Nicholas V. Hud
- NSF/NASA
Center for Chemical Evolution, Atlanta, Georgia 30332, United States
- School
of Chemistry & Biochemistry, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
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6
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Shende P, Rodrigues B, Govardhane S. Diversified applications of self-assembled nanocluster delivery systems- A state-of-the- art review. Curr Pharm Des 2022; 28:1870-1884. [PMID: 35232345 DOI: 10.2174/1381612828666220301125944] [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: 08/03/2021] [Accepted: 12/29/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Self-assembled nanoclusters arrange the components into an organized structure for the nanoparticulate system and also in the transportation of cellular elements for the fabrication of microelectronic devices. Nanoclusters reduce transcytosis and increase endocytosis in intestinal mucin to strengthen the retrograde pathway that helped in the delivery of actives to the Golgi apparatus. OBJECTIVES This review article focuses on the self-assembled nanoclusters for cellular transportation, applications of self-assembled structures in the delivery of essential elements like the use of a peptide in targeted and stimuli-responsive drug delivery systems, self-assembly of tocopherol nanoclusters that promotes vitamin E delivery across the endothelial barrier. Methods Current innovation in the self-assembly of peptides includes the formation of nanostructures like vesicles, fibers, and rod-coil in the applications of wound healing, tissue engineering, treatment of atherosclerosis, in sensing heavy metals from biological and environmental samples and advanced drug delivery. RESULTS Self-assembled biodegradable nanoclusters are used as biomimetic structures for synergistic effect. Improvement in the methods of preparation like the addition of a copolymer is used for temperature-triggered drug release nanoclusters. CONCLUSION Green synthesis of nanoclusters, nanocluster-based biosensor and artificial intelligence are the future concept in the manufacturing and the prevention of toxicity in humans.
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Affiliation(s)
- Pravin Shende
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM'S NMIMS, V. L. Mehta Road, Vile Parle (W), Mumbai, India
| | - Bernice Rodrigues
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM'S NMIMS, V. L. Mehta Road, Vile Parle (W), Mumbai, India
| | - Sharayu Govardhane
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM'S NMIMS, V. L. Mehta Road, Vile Parle (W), Mumbai, India
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7
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Fried SD, Fujishima K, Makarov M, Cherepashuk I, Hlouchova K. Peptides before and during the nucleotide world: an origins story emphasizing cooperation between proteins and nucleic acids. J R Soc Interface 2022; 19:20210641. [PMID: 35135297 PMCID: PMC8833103 DOI: 10.1098/rsif.2021.0641] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 01/05/2022] [Indexed: 12/14/2022] Open
Abstract
Recent developments in Origins of Life research have focused on substantiating the narrative of an abiotic emergence of nucleic acids from organic molecules of low molecular weight, a paradigm that typically sidelines the roles of peptides. Nevertheless, the simple synthesis of amino acids, the facile nature of their activation and condensation, their ability to recognize metals and cofactors and their remarkable capacity to self-assemble make peptides (and their analogues) favourable candidates for one of the earliest functional polymers. In this mini-review, we explore the ramifications of this hypothesis. Diverse lines of research in molecular biology, bioinformatics, geochemistry, biophysics and astrobiology provide clues about the progression and early evolution of proteins, and lend credence to the idea that early peptides served many central prebiotic roles before they were encodable by a polynucleotide template, in a putative 'peptide-polynucleotide stage'. For example, early peptides and mini-proteins could have served as catalysts, compartments and structural hubs. In sum, we shed light on the role of early peptides and small proteins before and during the nucleotide world, in which nascent life fully grasped the potential of primordial proteins, and which has left an imprint on the idiosyncratic properties of extant proteins.
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Affiliation(s)
- Stephen D. Fried
- Department of Chemistry, Johns Hopkins University, Baltimore, MD 21212, USA
- Department of Biophysics, Johns Hopkins University, Baltimore, MD 21212, USA
| | - Kosuke Fujishima
- Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo 1528550, Japan
- Graduate School of Media and Governance, Keio University, Fujisawa 2520882, Japan
| | - Mikhail Makarov
- Department of Cell Biology, Faculty of Science, Charles University, BIOCEV, Prague 12800, Czech Republic
| | - Ivan Cherepashuk
- Department of Cell Biology, Faculty of Science, Charles University, BIOCEV, Prague 12800, Czech Republic
| | - Klara Hlouchova
- Department of Cell Biology, Faculty of Science, Charles University, BIOCEV, Prague 12800, Czech Republic
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague 16610, Czech Republic
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8
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Peressotti S, Koehl GE, Goding JA, Green RA. Self-Assembling Hydrogel Structures for Neural Tissue Repair. ACS Biomater Sci Eng 2021; 7:4136-4163. [PMID: 33780230 PMCID: PMC8441975 DOI: 10.1021/acsbiomaterials.1c00030] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/10/2021] [Indexed: 12/12/2022]
Abstract
Hydrogel materials have been employed as biological scaffolds for tissue regeneration across a wide range of applications. Their versatility and biomimetic properties make them an optimal choice for treating the complex and delicate milieu of neural tissue damage. Aside from finely tailored hydrogel properties, which aim to mimic healthy physiological tissue, a minimally invasive delivery method is essential to prevent off-target and surgery-related complications. The specific class of injectable hydrogels termed self-assembling peptides (SAPs), provide an ideal combination of in situ polymerization combined with versatility for biofunctionlization, tunable physicochemical properties, and high cytocompatibility. This review identifies design criteria for neural scaffolds based upon key cellular interactions with the neural extracellular matrix (ECM), with emphasis on aspects that are reproducible in a biomaterial environment. Examples of the most recent SAPs and modification methods are presented, with a focus on biological, mechanical, and topographical cues. Furthermore, SAP electrical properties and methods to provide appropriate electrical and electrochemical cues are widely discussed, in light of the endogenous electrical activity of neural tissue as well as the clinical effectiveness of stimulation treatments. Recent applications of SAP materials in neural repair and electrical stimulation therapies are highlighted, identifying research gaps in the field of hydrogels for neural regeneration.
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Affiliation(s)
- Sofia Peressotti
- Department
of Bioengineering and Centre for Neurotechnology, Imperial College London, London SW72AS, United Kingdom
| | - Gillian E. Koehl
- Department
of Bioengineering and Centre for Neurotechnology, Imperial College London, London SW72AS, United Kingdom
| | - Josef A. Goding
- Department
of Bioengineering and Centre for Neurotechnology, Imperial College London, London SW72AS, United Kingdom
| | - Rylie A. Green
- Department
of Bioengineering and Centre for Neurotechnology, Imperial College London, London SW72AS, United Kingdom
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9
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Abstract
Self-assembly of proteins and peptides into the amyloid fold is a widespread phenomenon in the natural world. The structural hallmark of self-assembly into amyloid fibrillar assemblies is the cross-beta motif, which conveys distinct morphological and mechanical properties. The amyloid fibril formation has contrasting results depending on the organism, in the sense that it can bestow an organism with the advantages of mechanical strength and improved functionality or, on the contrary, could give rise to pathological states. In this chapter we review the existing information on amyloid-like peptide aggregates, which could either be derived from protein sequences, but also could be rationally or de novo designed in order to self-assemble into amyloid fibrils under physiological conditions. Moreover, the development of self-assembled fibrillar biomaterials that are tailored for the desired properties towards applications in biomedical or environmental areas is extensively analyzed. We also review computational studies predicting the amyloid propensity of the natural amino acid sequences and the structure of amyloids, as well as designing novel functional amyloid materials.
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Affiliation(s)
- C. Kokotidou
- University of Crete, Department of Materials Science and Technology Voutes Campus GR-70013 Heraklion Crete Greece
- FORTH, Institute for Electronic Structure and Laser N. Plastira 100 GR 70013 Heraklion Greece
| | - P. Tamamis
- Texas A&M University, Artie McFerrin Department of Chemical Engineering College Station Texas 77843-3122 USA
| | - A. Mitraki
- University of Crete, Department of Materials Science and Technology Voutes Campus GR-70013 Heraklion Crete Greece
- FORTH, Institute for Electronic Structure and Laser N. Plastira 100 GR 70013 Heraklion Greece
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10
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Aiga T, Manabe Y, Ito K, Chang T, Kabayama K, Ohshima S, Kametani Y, Miura A, Furukawa H, Inaba H, Matsuura K, Fukase K. Immunological Evaluation of Co‐Assembling a Lipidated Peptide Antigen and Lipophilic Adjuvants: Self‐Adjuvanting Anti‐Breast‐Cancer Vaccine Candidates. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Taku Aiga
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Yoshiyuki Manabe
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
- Core for Medicine and Science Collaborative Research and Education Project Research Center for Fundamental Sciences Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Keita Ito
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
- Core for Medicine and Science Collaborative Research and Education Project Research Center for Fundamental Sciences Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Tsung‐Che Chang
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Kazuya Kabayama
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
- Core for Medicine and Science Collaborative Research and Education Project Research Center for Fundamental Sciences Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Shino Ohshima
- School of Medicine Tokai University Isehara Kanagawa 259-1193 Japan
| | - Yoshie Kametani
- School of Medicine Tokai University Isehara Kanagawa 259-1193 Japan
| | - Ayane Miura
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Hiroto Furukawa
- Department of Chemistry and Biotechnology Graduate School of Engineering Center for Research on Green Sustainable Chemistry Tottori University 4-101 Koyama-Minami Tottori 680-8552 Japan
| | - Hiroshi Inaba
- Department of Chemistry and Biotechnology Graduate School of Engineering Center for Research on Green Sustainable Chemistry Tottori University 4-101 Koyama-Minami Tottori 680-8552 Japan
| | - Kazunori Matsuura
- Department of Chemistry and Biotechnology Graduate School of Engineering Center for Research on Green Sustainable Chemistry Tottori University 4-101 Koyama-Minami Tottori 680-8552 Japan
| | - Koichi Fukase
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
- Core for Medicine and Science Collaborative Research and Education Project Research Center for Fundamental Sciences Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
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11
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Aiga T, Manabe Y, Ito K, Chang TC, Kabayama K, Ohshima S, Kametani Y, Miura A, Furukawa H, Inaba H, Matsuura K, Fukase K. Immunological Evaluation of Co-Assembling a Lipidated Peptide Antigen and Lipophilic Adjuvants: Self-Adjuvanting Anti-Breast-Cancer Vaccine Candidates. Angew Chem Int Ed Engl 2020; 59:17705-17711. [PMID: 32583549 DOI: 10.1002/anie.202007999] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Indexed: 12/22/2022]
Abstract
Co-assembling vaccines composed of a lipidated HER2-derived antigenic CH401 peptide and either a lipophilic adjuvant, Pam3 CSK4 , α-GalCer, or lipid A 506, were evaluated as breast cancer vaccine candidates. This vaccine design was aimed to inherit both antigen multivalency and antigen-specific immunostimulation properties, observed in reported self-adjuvanting vaccine candidates, by using self-assembly and adjuvant-conjugated antigens. Under vaccination concentrations, respective lipophilic adjuvants underwent co-assembly with lipidated CH401, which boosted the anti-CH401 IgG and IgM production. In particular, α-GalCer was responsible for the most significant immune activation. Therefore, the newly developed vaccine design enabled the optimization of adjuvants against the antigenic CH401 peptide in a simple preparatory manner. Overall, the co-assembling vaccine design opens the door for efficient and practical self-adjuvanting vaccine development.
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Affiliation(s)
- Taku Aiga
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Yoshiyuki Manabe
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Keita Ito
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Tsung-Che Chang
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Kazuya Kabayama
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Shino Ohshima
- School of Medicine, Tokai University, Isehara, Kanagawa, 259-1193, Japan
| | - Yoshie Kametani
- School of Medicine, Tokai University, Isehara, Kanagawa, 259-1193, Japan
| | - Ayane Miura
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Hiroto Furukawa
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Center for Research on Green Sustainable Chemistry, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8552, Japan
| | - Hiroshi Inaba
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Center for Research on Green Sustainable Chemistry, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8552, Japan
| | - Kazunori Matsuura
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Center for Research on Green Sustainable Chemistry, Tottori University, 4-101 Koyama-Minami, Tottori, 680-8552, Japan
| | - Koichi Fukase
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan.,Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
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12
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Morgado PI, Palacios M, Larrain J. In situ injectable hydrogels for spinal cord regeneration: advances from the last 10 years. Biomed Phys Eng Express 2019; 6:012002. [PMID: 33438588 DOI: 10.1088/2057-1976/ab52e8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Spinal cord injury (SCI) is a tremendously devastating disorder with no effective therapy. Neuroprotective strategies have been applied aiming to prevent secondary cell death but no successful and robust effects have been observed. Recently, combinatorial approaches using biomaterials with cells and/or growth factors have demonstrated promising therapeutic effects because of the improvement of axonal growth and in vivo functional recovery in model organisms. In situ injectable hydrogels are a particularly attractive neuroregenerative approach to improve spinal cord repair and regeneration since they can be precisely injected into the lesion site filling the space prior to gelification, decrease scarring and promote axon growth due to the hydrogel's soft structure. Important advances regarding the use of hydrogels as potential therapeutic approaches has been reported during the last 10 years. Injectable alginate hydrogel loaded with GDNF, thermoresponsives heparin-poloxamer loaded with NGF and imidazole-poly(organophosphazenes) hydrogels are just three examples of biomaterials that can promote neurite, axon growth and improve functional recovery in hemisected and resected rats. Here we will review the status of in situ injectable hydrogels for spinal cord regeneration with special focus in the advantages of using hydrogel scaffolds, the ideal polymers to be used, the gelification process and the cells or growth factors combined. The in vitro and in vivo results reported for those biomaterials will be presented, compared and discussed.
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13
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Carlini AS, Gaetani R, Braden RL, Luo C, Christman KL, Gianneschi NC. Enzyme-responsive progelator cyclic peptides for minimally invasive delivery to the heart post-myocardial infarction. Nat Commun 2019; 10:1735. [PMID: 30988291 PMCID: PMC6465301 DOI: 10.1038/s41467-019-09587-y] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 03/11/2019] [Indexed: 01/08/2023] Open
Abstract
Injectable biopolymer hydrogels have gained attention for use as scaffolds to promote cardiac function and prevent negative left ventricular (LV) remodeling post-myocardial infarction (MI). However, most hydrogels tested in preclinical studies are not candidates for minimally invasive catheter delivery due to excess material viscosity, rapid gelation times, and/or concerns regarding hemocompatibility and potential for embolism. We describe a platform technology for progelator materials formulated as sterically constrained cyclic peptides which flow freely for low resistance injection, and rapidly assemble into hydrogels when linearized by disease-associated enzymes. Their utility in vivo is demonstrated by their ability to flow through a syringe and gel at the site of MI in rat models. Additionally, synthetic functionalization enables these materials to flow through a cardiac injection catheter without clogging, without compromising hemocompatibility or cytotoxicity. These studies set the stage for the development of structurally dynamic biomaterials for therapeutic hydrogel delivery to the MI.
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Affiliation(s)
- Andrea S Carlini
- Department of Chemistry & Biochemistry, University of California, San Diego, La Jolla, CA, 92093, USA
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Simpson Querrey Institute for BioNanotechnology, International Institute for Nanotechnology, and Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60208, USA
| | - Roberto Gaetani
- Department of Bioengineering, Sanford Consortium for Regenerative Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Rebecca L Braden
- Department of Bioengineering, Sanford Consortium for Regenerative Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Colin Luo
- Department of Bioengineering, Sanford Consortium for Regenerative Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Karen L Christman
- Department of Bioengineering, Sanford Consortium for Regenerative Medicine, University of California, San Diego, La Jolla, CA, 92093, USA.
| | - Nathan C Gianneschi
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Simpson Querrey Institute for BioNanotechnology, International Institute for Nanotechnology, and Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60208, USA.
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14
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Tang JD, Mura C, Lampe KJ. Stimuli-Responsive, Pentapeptide, Nanofiber Hydrogel for Tissue Engineering. J Am Chem Soc 2019; 141:4886-4899. [PMID: 30830776 DOI: 10.1021/jacs.8b13363] [Citation(s) in RCA: 167] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Short peptides are uniquely versatile building blocks for self-assembly. Supramolecular peptide assemblies can be used to construct functional hydrogel biomaterials-an attractive approach for neural tissue engineering. Here, we report a new class of short, five-residue peptides that form hydrogels with nanofiber structures. Using rheology and spectroscopy, we describe how sequence variations, pH, and peptide concentration alter the mechanical properties of our pentapeptide hydrogels. We find that this class of seven unmodified peptides forms robust hydrogels from 0.2-20 kPa at low weight percent (less than 3 wt %) in cell culture media and undergoes shear-thinning and rapid self-healing. The peptides self-assemble into long fibrils with sequence-dependent fibrillar morphologies. These fibrils exhibit a unique twisted ribbon shape, as visualized by transmission electron microscopy (TEM) and Cryo-EM imaging, with diameters in the low tens of nanometers and periodicities similar to amyloid fibrils. Experimental gelation behavior corroborates our molecular dynamics simulations, which demonstrate peptide assembly behavior, an increase in β-sheet content, and patterns of variation in solvent accessibility. Our rapidly assembling pentapeptides for injectable delivery (RAPID) hydrogels are syringe-injectable and support cytocompatible encapsulation of oligodendrocyte progenitor cells (OPCs), as well as their proliferation and three-dimensional process extension. Furthermore, RAPID gels protect OPCs from mechanical membrane disruption and acute loss of viability when ejected from a syringe needle, highlighting the protective capability of the hydrogel as potential cell carriers for transplantation therapies. The tunable mechanical and structural properties of these supramolecular assemblies are shown to be permissive to cell expansion and remodeling, making this hydrogel system suitable as an injectable material for cell delivery and tissue engineering applications.
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15
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Hassannejad Z, Zadegan SA, Vaccaro AR, Rahimi-Movaghar V, Sabzevari O. Biofunctionalized peptide-based hydrogel as an injectable scaffold for BDNF delivery can improve regeneration after spinal cord injury. Injury 2019; 50:278-285. [PMID: 30595411 DOI: 10.1016/j.injury.2018.12.027] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 12/18/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND The complex pathophysiological events occurring after traumatic spinal cord injuries (TSCI) make this devastating trauma still incurable. Peptide amphiphile (PA) hydrogels are nanobiomaterials displaying desirable properties for application in regenerative medicine because they are absorbable, injectable, allowing biofunctionalization, controlling release of trophic factors and mimic extracellular matrix (ECM). In this study, we explored the potentiality of the IKVAV-functionalized PA hydrogel to provide a permissive environment for cell migration and growth as well as sustained release of BDNF at the lesion after severe compression injury model. METHODS The IKVAV-functionalized PA was synthesized by automated solid-phase approach and its secondary structure was evaluated by Circular dichroism (CD) spectroscopy. The potential of IKVAV-functionalized PA to self-assemble into nanofibers and hydrogel formation were assessed using transmission electron microscopy (TEM). Release profiles of BDNF from hydrogel and the bioactivity of the released BDNF from hydrogel were determined using ELISA and DRG bioassay, respectively. Severe spinal cord injury was induced using clip compression at T7-T8 vertebral segment. Twenty four hours post-injury the animals were treated by either IKVAV PA hydrogel, BDNF-loaded IKVAV PA hydrogel, BDNF solution or saline. Two and six weeks later, animals were sacrificed and the lesion site was evaluated based on GFAP, CD68 and ß III tubulin immunoreactivity. Also, locomotor recovery was assessed during 6 weeks using Basso, Beattie, Bresnahan (BBB) scoring test. RESULTS The IKVAV PA arranged into nanofibrous structure and provided a sustained release of BDNF over 21 days while preserved the bioactivity of BDNF. Also, BDNF loading influenced the hydrogel nanostructure resulting in aligned orientation of nanofibers. Injection of BDNF-loaded IKVAV PA hydrogel resulted in a considerable axon preservation and astrogliosis reduction at 6 weeks post-injury without showing any inflammatory reaction. However, the BBB score was not statistically different between different treatment groups. CONCLUSION Although the locomotor functional recovery was not observed in this study, the axon preservation and minimal inflammation in animals treated with BDNF-incorporated hydrogel indicate the potentiality of the designed intervention for further evaluations in the path of developing efficient therapies for severe spinal cord injury.
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Affiliation(s)
- Zahra Hassannejad
- Pediatric Urology and Regenerative Medicine Research Center, Children's Hospital Medical Center, Tehran University of Medical Sciences, Tehran, Iran; Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Shayan Abdollah Zadegan
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Alexander R Vaccaro
- Department of Orthopaedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, PA, USA
| | - Vafa Rahimi-Movaghar
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran.
| | - Omid Sabzevari
- Toxicology and Poisoning Research Centre, Tehran University of Medical Sciences, Tehran, Iran; Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
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16
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Hainline KM, Gu F, Handley JF, Tian YF, Wu Y, de Wet L, Vander Griend DJ, Collier JH. Self-Assembling Peptide Gels for 3D Prostate Cancer Spheroid Culture. Macromol Biosci 2018; 19:e1800249. [PMID: 30324687 DOI: 10.1002/mabi.201800249] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/13/2018] [Indexed: 12/11/2022]
Abstract
Progress in prostate cancer research is presently limited by a shortage of reliable in vitro model systems. The authors describe a novel self-assembling peptide, bQ13, which forms nanofibers and gels useful for the 3D culture of prostate cancer spheroids, with improved cytocompatibility compared to related fibrillizing peptides. The mechanical properties of bQ13 gels can be controlled by adjusting peptide concentration, with storage moduli ranging between 1 and 10 kPa. bQ13's ability to remain soluble at mildly basic pH considerably improved the viability of encapsulated cells compared to other self-assembling nanofiber-forming peptides. LNCaP cells formed spheroids in bQ13 gels with similar morphologies and sizes to those formed in Matrigel or RADA16-I. Moreover, prostate-specific antigen (PSA) is produced by LNCaP cells in all matrices, and PSA production is more responsive to enzalutamide treatment in bQ13 gels than in other fibrillized peptide gels. bQ13 represents an attractive platform for further tailoring within 3D cell culture systems.
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Affiliation(s)
- Kelly M Hainline
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA
| | - Fangqi Gu
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA
| | - Jacqueline F Handley
- Department of Surgery, Section of Urology, University of Chicago, Chicago, IL, 60637, USA
| | - Ye F Tian
- Department of Surgery, Section of Urology, University of Chicago, Chicago, IL, 60637, USA
| | - Yaoying Wu
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA
| | - Larischa de Wet
- Department of Surgery, Section of Urology, University of Chicago, Chicago, IL, 60637, USA
| | - Donald J Vander Griend
- Department of Surgery, Section of Urology, University of Chicago, Chicago, IL, 60637, USA
| | - Joel H Collier
- Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA
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17
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Abstract
Self-assembled peptide nanostructures have been increasingly exploited as functional materials for applications in biomedicine and energy. The emergent properties of these nanomaterials determine the applications for which they can be exploited. It has recently been appreciated that nanomaterials composed of multicomponent coassembled peptides often display unique emergent properties that have the potential to dramatically expand the functional utility of peptide-based materials. This review presents recent efforts in the development of multicomponent peptide assemblies. The discussion includes multicomponent assemblies derived from short low molecular weight peptides, peptide amphiphiles, coiled coil peptides, collagen, and β-sheet peptides. The design, structure, emergent properties, and applications for these multicomponent assemblies are presented in order to illustrate the potential of these formulations as sophisticated next-generation bio-inspired materials.
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Affiliation(s)
- Danielle M Raymond
- Department of Chemistry, University of Rochester, Rochester, NY 14627-0216, USA.
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18
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Koch F, Müller M, König F, Meyer N, Gattlen J, Pieles U, Peters K, Kreikemeyer B, Mathes S, Saxer S. Mechanical characteristics of beta sheet-forming peptide hydrogels are dependent on peptide sequence, concentration and buffer composition. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171562. [PMID: 29657766 PMCID: PMC5882690 DOI: 10.1098/rsos.171562] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 02/09/2018] [Indexed: 06/08/2023]
Abstract
Self-assembling peptide hydrogels can be modified regarding their biodegradability, their chemical and mechanical properties and their nanofibrillar structure. Thus, self-assembling peptide hydrogels might be suitable scaffolds for regenerative therapies and tissue engineering. Owing to the use of various peptide concentrations and buffer compositions, the self-assembling peptide hydrogels might be influenced regarding their mechanical characteristics. Therefore, the mechanical properties and stability of a set of self-assembling peptide hydrogels, consisting of 11 amino acids, made from four beta sheet self-assembling peptides in various peptide concentrations and buffer compositions were studied. The formed self-assembling peptide hydrogels exhibited stiffnesses ranging from 0.6 to 205 kPa. The hydrogel stiffness was mostly affected by peptide sequence followed by peptide concentration and buffer composition. All self-assembling peptide hydrogels examined provided a nanofibrillar network formation. A maximum self-assembling peptide hydrogel dissolution of 20% was observed for different buffer solutions after 7 days. The stability regarding enzymatic and bacterial digestion showed less degradation in comparison to the self-assembling peptide hydrogel dissolution rate in buffer. The tested set of self-assembling peptide hydrogels were able to form stable scaffolds and provided a broad spectrum of tissue-specific stiffnesses that are suitable for a regenerative therapy.
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Affiliation(s)
- Franziska Koch
- School of Life Sciences, Institute for Chemistry and Bioanalytics, University of Applied Sciences and Arts Northwestern Switzerland, Muttenz, Switzerland
| | - Michael Müller
- Department for Health Science and Technology, Cartilage Engineering and Regeneration Laboratory, ETH Zurich, Zurich, Switzerland
| | - Finja König
- Master Program of Protein Science and Technology, Linköping University, Linköping, Sweden
| | - Nina Meyer
- Department for Chemistry and Biotechnology, Tissue Engineering, Zurich University of Applied Sciences, Wädenswil, Switzerland
| | - Jasmin Gattlen
- Department for Chemistry and Biotechnology, Tissue Engineering, Zurich University of Applied Sciences, Wädenswil, Switzerland
| | - Uwe Pieles
- School of Life Sciences, Institute for Chemistry and Bioanalytics, University of Applied Sciences and Arts Northwestern Switzerland, Muttenz, Switzerland
| | - Kirsten Peters
- Department of Cell Biology, University Medicine Rostock, Rostock, Germany
| | - Bernd Kreikemeyer
- Institute of Medical Microbiology, Virology and Hygiene, University Medicine Rostock, Rostock, Germany
| | - Stephanie Mathes
- Department for Chemistry and Biotechnology, Tissue Engineering, Zurich University of Applied Sciences, Wädenswil, Switzerland
| | - Sina Saxer
- School of Life Sciences, Institute for Chemistry and Bioanalytics, University of Applied Sciences and Arts Northwestern Switzerland, Muttenz, Switzerland
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19
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Eckes K, Baek K, Suggs LJ. Design and Evaluation of Short Self-Assembling Depsipeptides as Bioactive and Biodegradable Hydrogels. ACS OMEGA 2018; 3:1635-1644. [PMID: 30023812 PMCID: PMC6044717 DOI: 10.1021/acsomega.7b01641] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 01/04/2018] [Indexed: 05/08/2023]
Abstract
Described herein is the design of a cell-adherent and degradable hydrogel. Our goal was to create a self-assembling, backbone ester-containing analogue of the cell adhesion motif, arginine-glycine-aspartic acid (RGD). Two depsipeptides containing Fmoc (N-(fluorenyl)-9-methoxycarbonyl), Fmoc-FR-Glc-D, and Fmoc-F-Glc-RGD (where "Glc" is glycolic acid) were designed based on the results of integrin-binding affinity and cell interaction analyses. Two candidate molecules were synthesized, and their gelation characteristics, degradation profiles, and ability to promote cell attachment were analyzed. We found that ester substitution within the RGD sequence significantly decreases the integrin-binding affinity and subsequent cell attachment, but when the ester moiety flanks the bioactive sequence, the molecule can maintain its integrin-binding function while permitting nonenzymatic hydrolytic degradation. A self-assembled Fmoc-F-Glc-RGD hydrogel showed steady, linear degradation over 60 days, and when mixed with Fmoc-diphenylalanine (Fmoc-FF) for improved mechanical stiffness, the depsipeptide gel exhibited improved cell attachment and viability. Though the currently designed depsipeptide has several inherent limitations, our results indicate the potential of depsipeptides as the basis for biologically functional and degradable self-assembling hydrogel materials.
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Affiliation(s)
- Kevin
M. Eckes
- Department of Biomedical
Engineering, The University of Texas at
Austin, Austin, Texas 78712, United States
| | - Kiheon Baek
- Department of Biomedical
Engineering, The University of Texas at
Austin, Austin, Texas 78712, United States
| | - Laura J. Suggs
- Department of Biomedical
Engineering, The University of Texas at
Austin, Austin, Texas 78712, United States
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20
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Jiang L, Yang S, Lund R, Dong H. Shape-specific nanostructured protein mimics from de novo designed chimeric peptides. Biomater Sci 2018; 6:272-279. [DOI: 10.1039/c7bm00906b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We experimentally and theoretically demonstrated the formation of well-defined trigonal-bipyramidal protein-mimics through self-assembly of “simple” de novo designed chimeric peptides.
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Affiliation(s)
- Linhai Jiang
- Department of Chemistry & Biomolecular Science
- Clarkson University
- Potsdam
- USA
| | - Su Yang
- Department of Chemistry & Biomolecular Science
- Clarkson University
- Potsdam
- USA
| | - Reidar Lund
- Department of Chemistry
- University of Oslo
- Oslo 0315
- Norway
| | - He Dong
- Department of Chemistry & Biomolecular Science
- Clarkson University
- Potsdam
- USA
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21
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Datta LP, Mukherjee R, Biswas S, Das TK. Peptide-Based Polymer-Polyoxometalate Supramolecular Structure with a Differed Antimicrobial Mechanism. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:14195-14208. [PMID: 29135264 DOI: 10.1021/acs.langmuir.7b02916] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Because of the increasing prevalence of multidrug resistance feature, several investigations have been so far reported regarding the antibiotic alternative supramolecular bioactive agents made of hybrid assemblies. In this regard, it is well-established that combinational therapy inherited by assembled supramolecular structures can improve the bioactivity to some extent, but their mode of action has not been studied in detail. We provide first direct evidence that the improved mechanism of action of antimicrobial supra-amphiphilic nanocomposites differs largely from their parent antimicrobial peptide-based polymers. For the construction of a hybrid combinational system, we have synthesized side-chain peptide-based antimicrobial polymers via RAFT polymerization and exploited their cationic nature to decorate supra-amphiphilic nanocomposites via interaction with anionic polyoxometalates. Because of cooperative antimicrobial properties of both the polymer and polyoxometalate, the nanocomposites show an enhanced antimicrobial activity with a different antimicrobial mechanism. The cationic stimuli-responsive peptide-based polymers attack bacteria via membrane disruption mechanism, whereas free radical-mediated cell damage is the likely mechanism of polymer-polyoxometalate-based supra-amphiphilic nanocomposites. Thus, our study highlights the different antimicrobial mechanism of combinational systems in detail, which improves our understanding of enhanced antimicrobial efficacy.
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Affiliation(s)
- Lakshmi Priya Datta
- Department of Biochemistry & Biophysics, University of Kalyani , Kalyani 741235, Nadia, West Bengal, India
| | - Riya Mukherjee
- Department of Biochemistry & Biophysics, University of Kalyani , Kalyani 741235, Nadia, West Bengal, India
| | - Subharanjan Biswas
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata , Mohanpur 741246, Nadia, West Bengal, India
| | - Tapan Kumar Das
- Department of Biochemistry & Biophysics, University of Kalyani , Kalyani 741235, Nadia, West Bengal, India
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22
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Recent advances in smart biotechnology: Hydrogels and nanocarriers for tailored bioactive molecules depot. Adv Colloid Interface Sci 2017; 249:163-180. [PMID: 28527520 DOI: 10.1016/j.cis.2017.05.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 05/06/2017] [Accepted: 05/08/2017] [Indexed: 12/18/2022]
Abstract
Over the past ten years, the global biopharmaceutical market has remarkably grown, with ten over the top twenty worldwide high performance medical treatment sales being biologics. Thus, biotech R&D (research and development) sector is becoming a key leading branch, with expanding revenues. Biotechnology offers considerable advantages compared to traditional therapeutic approaches, such as reducing side effects, specific treatments, higher patient compliance and therefore more effective treatments leading to lower healthcare costs. Within this sector, smart nanotechnology and colloidal self-assembling systems represent pivotal tools able to modulate the delivery of therapeutics. A comprehensive understanding of the processes involved in the self-assembly of the colloidal structures discussed therein is essential for the development of relevant biomedical applications. In this review we report the most promising and best performing platforms for specific classes of bioactive molecules and related target, spanning from siRNAs, gene/plasmids, proteins/growth factors, small synthetic therapeutics and bioimaging probes.
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23
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Wu Y, Norberg PK, Reap EA, Congdon KL, Fries CN, Kelly SH, Sampson JH, Conticello VP, Collier JH. A Supramolecular Vaccine Platform Based on α-Helical Peptide Nanofibers. ACS Biomater Sci Eng 2017; 3:3128-3132. [PMID: 30740520 DOI: 10.1021/acsbiomaterials.7b00561] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A supramolecular peptide vaccine system was designed in which epitope-bearing peptides self-assemble into elongated nanofibers composed almost entirely of alpha-helical structure. The nanofibers were readily internalized by antigen presenting cells and produced robust antibody, CD4+ T-cell, and CD8+ T-cell responses without supplemental adjuvants in mice. Epitopes studied included a cancer B-cell epitope from the epidermal growth factor receptor class III variant (EGFRvIII), the universal CD4+ T-cell epitope PADRE, and the model CD8+ T-cell epitope SIINFEKL, each of which could be incorporated into supramolecular multi-epitope nanofibers in a modular fashion.
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Affiliation(s)
- Yaoying Wu
- Department of Biomedical Engineering, Duke University, Durham, North Carolina, 27708, United States
| | - Pamela K Norberg
- Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina 27710, United States
| | - Elizabeth A Reap
- Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina 27710, United States
| | - Kendra L Congdon
- Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina 27710, United States
| | - Chelsea N Fries
- Department of Biomedical Engineering, Duke University, Durham, North Carolina, 27708, United States
| | - Sean H Kelly
- Department of Biomedical Engineering, Duke University, Durham, North Carolina, 27708, United States
| | - John H Sampson
- Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina 27710, United States
| | - Vincent P Conticello
- Department of Chemistry, Emory University, Atlanta, Georgia, 30322, United States
| | - Joel H Collier
- Department of Biomedical Engineering, Duke University, Durham, North Carolina, 27708, United States
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24
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Nagy-Smith K, Beltramo PJ, Moore E, Tycko R, Furst EM, Schneider JP. Molecular, Local, and Network-Level Basis for the Enhanced Stiffness of Hydrogel Networks Formed from Coassembled Racemic Peptides: Predictions from Pauling and Corey. ACS CENTRAL SCIENCE 2017; 3:586-597. [PMID: 28691070 PMCID: PMC5492410 DOI: 10.1021/acscentsci.7b00115] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Indexed: 05/20/2023]
Abstract
Hydrogels prepared from self-assembling peptides are promising materials for medical applications, and using both l- and d-peptide isomers in a gel's formulation provides an intuitive way to control the proteolytic degradation of an implanted material. In the course of developing gels for delivery applications, we discovered that a racemic mixture of the mirror-image β-hairpin peptides, named MAX1 and DMAX1, provides a fibrillar hydrogel that is four times more rigid than gels formed by either peptide alone-a puzzling observation. Herein, we use transmission electron microscopy, small angle neutron scattering, solid state NMR, diffusing wave, infrared, and fluorescence spectroscopies, and modeling to determine the molecular basis for the increased mechanical rigidity of the racemic gel. We find that enantiomeric peptides coassemble in an alternating fashion along the fibril long axis, forming an extended heterochiral pleat-like β-sheet, a structure predicted by Pauling and Corey in 1953. Hydrogen bonding between enantiomers within the sheet dictates the placement of hydrophobic valine side chains in the fibrils' dry interior in a manner that allows the formation of nested hydrophobic interactions between enantiomers, interactions not accessible within enantiomerically pure fibrils. Importantly, this unique molecular arrangement of valine side chains maximizes inter-residue contacts within the core of the fibrils resulting in their local stiffening, which in turn, gives rise to the significant increase in bulk mechanical rigidity observed for the racemic hydrogel.
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Affiliation(s)
- Katelyn Nagy-Smith
- Chemical
Biology Laboratory, National Cancer Institute, Frederick, Maryland 21702, United States
- Department of Chemistry and Biochemistry and Department of Chemical
and Biomolecular
Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Peter J. Beltramo
- Department of Chemistry and Biochemistry and Department of Chemical
and Biomolecular
Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Eric Moore
- Laboratory
of Chemical Physics, National Institute of Diabetes and Digestive
and Kidney Diseases, National Institutes
of Health, Bethesda, Maryland 20892-0520, United States
| | - Robert Tycko
- Laboratory
of Chemical Physics, National Institute of Diabetes and Digestive
and Kidney Diseases, National Institutes
of Health, Bethesda, Maryland 20892-0520, United States
| | - Eric M. Furst
- Department of Chemistry and Biochemistry and Department of Chemical
and Biomolecular
Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Joel P. Schneider
- Chemical
Biology Laboratory, National Cancer Institute, Frederick, Maryland 21702, United States
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25
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Han S, Lee MK, Lim YB. Cell-Penetrating Cross-β Peptide Assemblies with Controlled Biodegradable Properties. Biomacromolecules 2016; 18:27-35. [DOI: 10.1021/acs.biomac.6b01153] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sanghun Han
- Department of Materials Science
and Engineering, Yonsei University, Seoul 03722, Korea
| | - Mun-kyung Lee
- Department of Materials Science
and Engineering, Yonsei University, Seoul 03722, Korea
| | - Yong-beom Lim
- Department of Materials Science
and Engineering, Yonsei University, Seoul 03722, Korea
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26
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Inhibition of VEGF mediated corneal neovascularization by anti-angiogenic peptide nanofibers. Biomaterials 2016; 107:124-32. [DOI: 10.1016/j.biomaterials.2016.08.045] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 08/29/2016] [Indexed: 12/15/2022]
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Wen Y, Waltman A, Han H, Collier JH. Switching the Immunogenicity of Peptide Assemblies Using Surface Properties. ACS NANO 2016; 10:9274-9286. [PMID: 27680575 PMCID: PMC5704984 DOI: 10.1021/acsnano.6b03409] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Biomaterials created from supramolecular peptides, proteins, and their derivatives have been receiving increasing interest for both immunological applications, such as vaccines and immunotherapies, as well as ostensibly nonimmunological applications, such as therapeutic delivery or tissue engineering. However, simple rules for either maximizing immunogenicity or abolishing it have yet to be elucidated, even though immunogenicity is a prime consideration for the design of any supramolecular biomaterial intended for use in vivo. Here, we investigated a range of physicochemical properties of fibrillized peptide biomaterials, identifying negative surface charge as a means for completely abolishing antibody and T cell responses against them in mice, even when they display a competent epitope. The work was facilitated by the modularity of the materials, which enabled the generation of a set of co-assembled fibrillar peptide materials with broad ranges of surface properties. It was found that negative surface charge, provided via negatively charged amino acid residues, prevented T cell and antibody responses to antigen-carrying assemblies because it prevented uptake of the materials by antigen-presenting cells (APCs), which in turn prevented presentation of the epitope peptide in the APCs' major histocompatibility class II molecules. Conversely, positive surface charge augmented the uptake of fibrillized peptides by APCs. These findings suggest that some surface characteristics, such as extensive negative charge, should be avoided in vaccine design using supramolecular peptide assemblies. More importantly, it provides a strategy to switch off potentially problematic immunogenicity for using these materials in nonimmunological applications.
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Affiliation(s)
- Yi Wen
- Duke University, Biomedical Engineering Department, Durham, NC 27708, USA
- University of Chicago, Department of Surgery, Chicago, IL 60637, USA
| | - Amelia Waltman
- University of Chicago, Department of Surgery, Chicago, IL 60637, USA
| | - Huifang Han
- University of Chicago, Department of Surgery, Chicago, IL 60637, USA
| | - Joel H. Collier
- Duke University, Biomedical Engineering Department, Durham, NC 27708, USA
- University of Chicago, Department of Surgery, Chicago, IL 60637, USA
- Corresponding Author: Joel H. Collier, PhD, Associate Professor, Department of Biomedical Engineering, Duke University, Fitzpatrick CIEMAS 1393, Campus Box 90281, Durham, NC 27708-0281, T: 919-681-9768,
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Wu Y, Collier JH. α-Helical coiled-coil peptide materials for biomedical applications. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2016; 9. [PMID: 27597649 DOI: 10.1002/wnan.1424] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 07/07/2016] [Accepted: 07/17/2016] [Indexed: 12/31/2022]
Abstract
Self-assembling coiled coils, which occur commonly in native proteins, have received significant interest for the design of new biomaterials-based medical therapies. Considerable effort over recent years has led to a detailed understanding of the self-assembly process of coiled coils, and a diverse collection of strategies have been developed for designing functional materials using this motif. The ability to engineer the interface between coiled coils allows one to achieve variously connected components, leading to precisely defined structures such as nanofibers, nanotubes, nanoparticles, networks, gels, and combinations of these. Currently these materials are being developed for a range of biotechnological and medical applications, including drug delivery systems for controlled release, targeted nanomaterials, 'drug-free' therapeutics, vaccine delivery systems, and others. WIREs Nanomed Nanobiotechnol 2017, 9:e1424. doi: 10.1002/wnan.1424 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Yaoying Wu
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Joel H Collier
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
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Vigneswaran Y, Han H, De Loera R, Wen Y, Zhang X, Sun T, Mora-Solano C, Collier JH. This paper is the winner of an SFB Award in the Hospital Intern, Residency category: Peptide biomaterials raising adaptive immune responses in wound healing contexts. J Biomed Mater Res A 2016; 104:1853-62. [PMID: 27129604 DOI: 10.1002/jbm.a.35767] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 04/28/2016] [Indexed: 12/14/2022]
Abstract
Biomaterials used in the context of tissue engineering or wound repair are commonly designed to be "nonimmunogenic." However, previously it has been observed that self-assembled peptide nanofiber materials are noninflammatory despite their immunogenicity, suggesting that they may be appropriate for use in wound-healing contexts. To test this hypothesis, mice were immunized with epitope-containing peptide self-assemblies until they maintained high antibody titers against the material, then gels of the same peptide assemblies were applied within full-thickness dermal wounds. In three different murine dermal-wounding models with different baseline healing rates, even significantly immunogenic peptide assemblies did not delay healing. Conversely, adjuvanted peptide assemblies, while raising similar antibody titers to unadjuvanted assemblies, did delay wound healing. Analysis of the healing wounds indicated that compared to adjuvanted peptide assemblies, the unadjuvanted assemblies exhibited a progression of the dominant T-cell subset from CD4(+) to CD8(+) cells in the wound, and CD4(+) cell populations displayed a more Th2-slanted response. These findings illustrate an example of a significant antibiomaterial adaptive immune response that does not adversely affect wound healing despite ongoing antibody production. This material would thus be considered "immunologically compatible" in this specific context rather than "nonimmunogenic," a designation that is expected to apply to a range of other protein- and peptide-based biomaterials in wound-healing and tissue-engineering applications. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 1853-1862, 2016.
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Affiliation(s)
| | - Huifang Han
- Department of Surgery, University of Chicago, Chicago, Illinois
| | | | - Yi Wen
- Department of Surgery, University of Chicago, Chicago, Illinois.,Department of Biomedical Engineering, Duke University, Durham, North Carolina
| | - Xing Zhang
- Department of Surgery, University of Chicago, Chicago, Illinois
| | - Tao Sun
- Department of Surgery, University of Chicago, Chicago, Illinois
| | | | - Joel H Collier
- Department of Surgery, University of Chicago, Chicago, Illinois.,Department of Biomedical Engineering, Duke University, Durham, North Carolina
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Habibi N, Kamaly N, Memic A, Shafiee H. Self-assembled peptide-based nanostructures: Smart nanomaterials toward targeted drug delivery. NANO TODAY 2016; 11:41-60. [PMID: 27103939 PMCID: PMC4834907 DOI: 10.1016/j.nantod.2016.02.004] [Citation(s) in RCA: 376] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Self-assembly of peptides can yield an array of well-defined nanostructures that are highly attractive nanomaterials for many biomedical applications such as drug delivery. Some of the advantages of self-assembled peptide nanostructures over other delivery platforms include their chemical diversity, biocompatibility, high loading capacity for both hydrophobic and hydrophilic drugs, and their ability to target molecular recognition sites. Furthermore, these self-assembled nanostructures could be designed with novel peptide motifs, making them stimuli-responsive and achieving triggered drug delivery at disease sites. The goal of this work is to present a comprehensive review of the most recent studies on self-assembled peptides with a focus on their "smart" activity for formation of targeted and responsive drug-delivery carriers.
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Affiliation(s)
- Neda Habibi
- Division of Biomedical Engineering, Division of Renal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02139 (USA)
| | - Nazila Kamaly
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115 (USA)
| | - Adnan Memic
- Center for Nanotechnology, King AbdulAziz University, Jeddah, 21589, Saudi Arabia
| | - Hadi Shafiee
- Division of Biomedical Engineering, Division of Renal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02139 (USA)
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Du X, Zhou J, Shi J, Xu B. Supramolecular Hydrogelators and Hydrogels: From Soft Matter to Molecular Biomaterials. Chem Rev 2015; 115:13165-307. [PMID: 26646318 PMCID: PMC4936198 DOI: 10.1021/acs.chemrev.5b00299] [Citation(s) in RCA: 1278] [Impact Index Per Article: 142.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Indexed: 12/19/2022]
Abstract
In this review we intend to provide a relatively comprehensive summary of the work of supramolecular hydrogelators after 2004 and to put emphasis particularly on the applications of supramolecular hydrogels/hydrogelators as molecular biomaterials. After a brief introduction of methods for generating supramolecular hydrogels, we discuss supramolecular hydrogelators on the basis of their categories, such as small organic molecules, coordination complexes, peptides, nucleobases, and saccharides. Following molecular design, we focus on various potential applications of supramolecular hydrogels as molecular biomaterials, classified by their applications in cell cultures, tissue engineering, cell behavior, imaging, and unique applications of hydrogelators. Particularly, we discuss the applications of supramolecular hydrogelators after they form supramolecular assemblies but prior to reaching the critical gelation concentration because this subject is less explored but may hold equally great promise for helping address fundamental questions about the mechanisms or the consequences of the self-assembly of molecules, including low molecular weight ones. Finally, we provide a perspective on supramolecular hydrogelators. We hope that this review will serve as an updated introduction and reference for researchers who are interested in exploring supramolecular hydrogelators as molecular biomaterials for addressing the societal needs at various frontiers.
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Affiliation(s)
- Xuewen Du
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Jie Zhou
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Junfeng Shi
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
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Loo Y, Goktas M, Tekinay AB, Guler MO, Hauser CAE, Mitraki A. Self-Assembled Proteins and Peptides as Scaffolds for Tissue Regeneration. Adv Healthc Mater 2015; 4:2557-86. [PMID: 26461979 DOI: 10.1002/adhm.201500402] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 07/24/2015] [Indexed: 12/15/2022]
Abstract
Self-assembling proteins and peptides are increasingly gaining interest for potential use as scaffolds in tissue engineering applications. They self-organize from basic building blocks under mild conditions into supramolecular structures, mimicking the native extracellular matrix. Their properties can be easily tuned through changes at the sequence level. Moreover, they can be produced in sufficient quantities with chemical synthesis or recombinant technologies to allow them to address homogeneity and standardization issues required for applications. Here. recent advances in self-assembling proteins, peptides, and peptide amphiphiles that form scaffolds suitable for tissue engineering are reviewed. The focus is on a variety of motifs, ranging from minimalistic dipeptides, simplistic ultrashort aliphatic peptides, and peptide amphiphiles to large "recombinamer" proteins. Special emphasis is placed on the rational design of self-assembling motifs and biofunctionalization strategies to influence cell behavior and modulate scaffold stability. Perspectives for combination of these "bottom-up" designer strategies with traditional "top-down" biofabrication techniques for new generations of tissue engineering scaffolds are highlighted.
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Affiliation(s)
- Yihua Loo
- Institute for Bioengineering and Nanotechnology; A* STAR; 31 Biopolis Way The Nanos 138669 Singapore
| | - Melis Goktas
- Institute of Materials Science and Nanotechnology; National Nanotechnology Research Center (UNAM); Bilkent University; Ankara Turkey 06800
| | - Ayse B. Tekinay
- Institute of Materials Science and Nanotechnology; National Nanotechnology Research Center (UNAM); Bilkent University; Ankara Turkey 06800
| | - Mustafa O. Guler
- Institute of Materials Science and Nanotechnology; National Nanotechnology Research Center (UNAM); Bilkent University; Ankara Turkey 06800
| | - Charlotte A. E. Hauser
- Institute for Bioengineering and Nanotechnology; A* STAR; 31 Biopolis Way The Nanos 138669 Singapore
| | - Anna Mitraki
- Department of Materials Science and Technology; University of Crete; Greece 70013
- Institute for Electronic Structure and Lasers (IESL); Foundation for Research and Technology Hellas (FORTH); Vassilika Vouton; Heraklion Crete Greece 70013
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Nguyen MM, Eckes KM, Suggs LJ. Charge and sequence effects on the self-assembly and subsequent hydrogelation of Fmoc-depsipeptides. SOFT MATTER 2014; 10:2693-702. [PMID: 24647784 PMCID: PMC4018732 DOI: 10.1039/c4sm00009a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Herein we report on the self-assembly of a family of Fmoc-depsipeptides into nanofibers and hydrogels. We show that fiber formation occurs in depsipeptide structures in which the fluorenyl group is closely associated and that side-chain charge and sequence affect the extent of self-assembly and subsequent gelation. Using fluorescence emission spectroscopy and circular dichroism, we show that self-assembly can be monitored and is observed in these slow-gelling systems prior to hydrogel formation. We also demonstrate that the ionic strength of salt-containing solutions affects the time at which self-assembly results in gelation of the bulk solution. From transmission electron microscopy, we report that morphological changes progress over time and are observed as micelles transitioning to fibers prior to the onset of gelation. Gelled depsipeptides degraded at a slower rate than non-gelled samples in the presence of salt, while hydrolysis in water of both gels and solution samples was minimal even after 14 days. Our work shows that while incorporating ester functionality within a peptide backbone reduces the number of hydrogen bonding sites available for forming and stabilizing supramolecular assemblies, the substitution does not prohibit self-assembly and subsequent gelation.
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Affiliation(s)
- Mary M. Nguyen
- The University of Texas at Austin, Department of Biomedical Engineering, 107 W Dean Keeton Street, Austin, TX, 78712, USA. Fax: 512 471 0616; Tel: 512 232 8593
| | - Kevin M. Eckes
- The University of Texas at Austin, Department of Biomedical Engineering, 107 W Dean Keeton Street, Austin, TX, 78712, USA. Fax: 512 471 0616; Tel: 512 232 8593
| | - Laura J. Suggs
- The University of Texas at Austin, Department of Biomedical Engineering, 107 W Dean Keeton Street, Austin, TX, 78712, USA. Fax: 512 471 0616; Tel: 512 232 8593
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