1
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Oktawiec J, Ebrahim OM, Chen Y, Su K, Sharpe C, Rosenmann ND, Barbut C, Weigand SJ, Thompson MP, Byrnes J, Qiao B, Gianneschi NC. Conformational modulation and polymerization-induced folding of proteomimetic peptide brush polymers. Chem Sci 2024:d4sc03420a. [PMID: 39129772 PMCID: PMC11308386 DOI: 10.1039/d4sc03420a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Accepted: 07/16/2024] [Indexed: 08/13/2024] Open
Abstract
Peptide-brush polymers generated by graft-through living polymerization of peptide-modified monomers exhibit high proteolytic stability, therapeutic efficacy, and potential as functional tandem repeat protein mimetics. Prior work has focused on polymers generated from structurally disordered peptides that lack defined conformations. To obtain insight into how the structure of these polymers is influenced by the folding of their peptide sidechains, a set of polymers with varying degrees of polymerization was prepared from peptide monomers that adopt α-helical secondary structure for comparison to those having random coil structures. Circular dichroism and nuclear magnetic resonance spectroscopy confirm the maintenance of the secondary structure of the constituent peptide when polymerized. Small-angle X-ray scattering (SAXS) studies reveal the solution-phase conformation of PLPs in different solvent environments. In particular, X-ray scattering shows that modulation of solvent hydrophobicity, as well as hydrogen bonding patterns of the peptide sidechain, plays an important role in the degree of globularity and conformation of the overall polymer, with polymers of helical peptide brushes showing less spherical compaction in conditions where greater helicity is observed. These structural insights into peptide brush folding and polymer conformation inform the design of these proteomimetic materials with promise for controlling and predicting their artificial fold and morphology.
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Affiliation(s)
- Julia Oktawiec
- Department of Chemistry, Northwestern University Evanston IL 60208 USA
| | - Omar M Ebrahim
- Department of Chemistry, Northwestern University Evanston IL 60208 USA
| | - Yu Chen
- Department of Materials Science and Engineering, Northwestern University Evanston IL 60208 USA
| | - Kaylen Su
- Department of Natural Sciences, Baruch College, City University of New York New York NY 10010 USA
| | - Christopher Sharpe
- Department of Materials Science and Engineering, Northwestern University Evanston IL 60208 USA
| | - Nathan D Rosenmann
- Department of Materials Science and Engineering, Northwestern University Evanston IL 60208 USA
| | - Clara Barbut
- Department of Chemistry, Northwestern University Evanston IL 60208 USA
| | - Steven J Weigand
- DuPont-Northwestern-Dow Collaborative Access Team (DND-CAT) Synchrotron Research Center, Northwestern University Argonne IL 60208 USA
| | | | - James Byrnes
- Beamline 16ID, NSLS-II, Brookhaven National Laboratory Upton NY 11973 USA
| | - Baofu Qiao
- Department of Natural Sciences, Baruch College, City University of New York New York NY 10010 USA
| | - Nathan C Gianneschi
- Department of Chemistry, Northwestern University Evanston IL 60208 USA
- Department of Materials Science and Engineering, Northwestern University Evanston IL 60208 USA
- International Institute for Nanotechnology, Chemistry of Life Processes Institute, Simpson Querrey Institute, Lurie Cancer Center, Department of Biomedical Engineering, and Department of Pharmacology, Northwestern University Evanston IL 60208 USA
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2
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Aguilar CJ, Sarwar M, Prabakar S, Zhang W, Harris PWR, Brimble MA, Kavianinia I. Harnessing the power of a photoinitiated thiol-ene "click" reaction for the efficient synthesis of S-lipidated collagen model peptide amphiphiles. Org Biomol Chem 2023; 21:9150-9158. [PMID: 37822146 DOI: 10.1039/d3ob01469j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
A photoinitiated thiol-ene "click" reaction was used to synthesize S-lipidated collagen model peptide amphiphiles. Use of 2-iminothiolane provided an epimerization-free thiol handle required for thiol-ene based incorporation of lipid moieties onto collagen-based peptide sequences. This approach not only led to improvements in the triple helical characteristics of the resulting collagen model peptides but also increased the aqueous solubility of the peptide amphiphiles. As a result, this methodology holds significant potential for the design and advancement of functional peptide amphiphiles, offering enhanced capabilities across a wide range of applications.
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Affiliation(s)
- Clouie Justin Aguilar
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland 1010, New Zealand.
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Makhdoom Sarwar
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, New Zealand
- Department of Obstetrics and Gynaecology, University of Otago, Christchurch, 2 Riccarton Avenue, Christchurch 8011, New Zealand
| | - Sujay Prabakar
- Leather and Shoe Research Association of New Zealand, PO Box 8094, Hokowhitu, Palmerston North 4446, New Zealand
| | - Wenkai Zhang
- Leather and Shoe Research Association of New Zealand, PO Box 8094, Hokowhitu, Palmerston North 4446, New Zealand
| | - Paul W R Harris
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland 1010, New Zealand.
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, New Zealand
| | - Margaret A Brimble
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland 1010, New Zealand.
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, New Zealand
| | - Iman Kavianinia
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland 1010, New Zealand.
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds Street, Auckland, New Zealand
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3
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Fiala T, Heeb R, Vigliotti L, Wennemers H. The Yin and Yang of How N-Terminal Acyl Caps Affect Collagen Triple Helices. Biomacromolecules 2023; 24:3954-3960. [PMID: 37227696 DOI: 10.1021/acs.biomac.3c00241] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
N-terminal acylation is a common tool for the installation of functional moieties (e.g., sensors or bioactive molecules) on collagen model peptides (CMPs). The N-acyl group and its length are generally assumed to have little or no influence on the properties of the collagen triple helix formed by the CMP. Here, we show that the length of short (C1-C4) acyl capping groups has different effects on the thermal stability of collagen triple helices in POG, OGP, and GPO frames. While the effect of different capping groups on the stability of triple helices in the GPO frame is negligible, longer acyl chains stabilize OGP triple helices but destabilize POG analogues. The observed trends arise from a combination of steric repulsion, the hydrophobic effect, and n → π* interactions. Our study provides a basis for the design of N-terminally functionalized CMPs with predictable effects on triple helix stability.
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Affiliation(s)
- Tomas Fiala
- Laboratory of Organic Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Rahel Heeb
- Laboratory of Organic Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Luca Vigliotti
- Laboratory of Organic Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Helma Wennemers
- Laboratory of Organic Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
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4
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Fowkes MM, Troeberg L, Brennan PE, Vincent TL, Meldal M, Lim NH. Development of Selective ADAMTS-5 Peptide Substrates to Monitor Proteinase Activity. J Med Chem 2023; 66:3522-3539. [PMID: 36891740 PMCID: PMC10009750 DOI: 10.1021/acs.jmedchem.2c02090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Indexed: 02/25/2023]
Abstract
The dysregulation of proteinase activity is a hallmark of osteoarthritis (OA), a disease characterized by progressive degradation of articular cartilage by catabolic proteinases such as a disintegrin and metalloproteinase with thrombospondin type I motifs-5 (ADAMTS-5). The ability to detect such activity sensitively would aid disease diagnosis and the evaluation of targeted therapies. Förster resonance energy transfer (FRET) peptide substrates can detect and monitor disease-related proteinase activity. To date, FRET probes for detecting ADAMTS-5 activity are nonselective and relatively insensitive. We describe the development of rapidly cleaved and highly selective ADAMTS-5 FRET peptide substrates through in silico docking and combinatorial chemistry. The lead substrates 3 and 26 showed higher overall cleavage rates (∼3-4-fold) and catalytic efficiencies (∼1.5-2-fold) compared to the best current ADAMTS-5 substrate ortho-aminobenzoyl(Abz)-TESE↓SRGAIY-N-3-[2,4-dinitrophenyl]-l-2,3-diaminopropionyl(Dpa)-KK-NH2. They exhibited high selectivity for ADAMTS-5 over ADAMTS-4 (∼13-16-fold), MMP-2 (∼8-10-fold), and MMP-9 (∼548-2561-fold) and detected low nanomolar concentrations of ADAMTS-5.
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Affiliation(s)
- Milan M. Fowkes
- Centre
for OA Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Headington, Oxford OX3 7FY, United Kingdom
| | - Linda Troeberg
- Norwich
Medical School, Bob Champion Research and Education Building, Rosalind
Franklin Road, University of East Anglia, Norwich NR4 7UQ, United Kingdom
| | - Paul E. Brennan
- Alzheimer’s
Research UK Oxford Drug Discovery Institute, Centre for Medicines
Discovery, Nuffield Department of Medicine Research Building, University of Oxford, Old Road Campus, Headington, Oxford OX3 7FZ, United Kingdom
| | - Tonia L. Vincent
- Centre
for OA Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Headington, Oxford OX3 7FY, United Kingdom
| | - Morten Meldal
- Department
of Chemistry, University of Copenhagen, Universitetsparken 5, Building B304, Copenhagen DK-2100, Denmark
| | - Ngee H. Lim
- Centre
for OA Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Headington, Oxford OX3 7FY, United Kingdom
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5
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Fiala T, Barros EP, Ebert MO, Ruijsenaars E, Riniker S, Wennemers H. Frame Shifts Affect the Stability of Collagen Triple Helices. J Am Chem Soc 2022; 144:18642-18649. [PMID: 36179150 DOI: 10.1021/jacs.2c08727] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Collagen model peptides (CMPs), composed of proline-(2S,4R)-hydroxyproline-glycine (POG) repeat units, have been extensively used to study the structure and stability of triple-helical collagen─the dominant structural protein in mammals─at the molecular level. Despite the more than 50-year history of CMPs and numerous studies on the relationship between the composition of single-stranded CMPs and the thermal stability of the assembled triple helices, little attention has been paid to the effects arising from their terminal residues. Here, we show that frame-shifted CMPs, which share POG repeat units but terminate with P, O, or G, form triple helices with vastly different thermal stabilities. A melting temperature difference as high as 16 °C was found for triple helices from 20-mers Ac-OG[POG]6-NH2 and Ac-[POG]6PO-NH2, and triple helices of the constitutional isomers Ac-[POG]7-NH2 and Ac-[GPO]7-NH2 melt 10 °C apart. A combination of thermal denaturation, circular dichroism and NMR spectroscopic studies, and molecular dynamics simulations revealed that the stability differences originate from the propensity of the peptide termini to preorganize into a polyproline-II helical structure. Our results advise that care must be taken when designing peptide mimics of structural proteins, as subtle changes in the terminal residues can significantly affect their properties. Our findings also provide a general and straightforward tool for tuning the stability of CMPs for applications as synthetic materials and biological probes.
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Affiliation(s)
- Tomas Fiala
- Laboratory of Organic Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 3, Zurich 8093, Switzerland
| | - Emilia P Barros
- Laboratory of Physical Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 2, Zurich 8093, Switzerland
| | - Marc-Olivier Ebert
- Laboratory of Organic Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 3, Zurich 8093, Switzerland
| | - Enrico Ruijsenaars
- Laboratory of Physical Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 2, Zurich 8093, Switzerland
| | - Sereina Riniker
- Laboratory of Physical Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 2, Zurich 8093, Switzerland
| | - Helma Wennemers
- Laboratory of Organic Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 3, Zurich 8093, Switzerland
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6
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Malcor JD, Mallein-Gerin F. Biomaterial functionalization with triple-helical peptides for tissue engineering. Acta Biomater 2022; 148:1-21. [PMID: 35675889 DOI: 10.1016/j.actbio.2022.06.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/09/2022] [Accepted: 06/01/2022] [Indexed: 11/29/2022]
Abstract
In the growing field of tissue engineering, providing cells in biomaterials with the adequate biological cues represents an increasingly important challenge. Yet, biomaterials with excellent mechanical properties often are often biologically inert to many cell types. To address this issue, researchers resort to functionalization, i.e. the surface modification of a biomaterial with active molecules or substances. Functionalization notably aims to replicate the native cellular microenvironment provided by the extracellular matrix, and in particular by collagen, its major component. As our understanding of biological processes regulating cell behaviour increases, functionalization with biomolecules binding cell surface receptors constitutes a promising strategy. Amongst these, triple-helical peptides (THPs) that reproduce the architectural and biological properties of collagen are especially attractive. Indeed, THPs containing binding sites from the native collagen sequence have successfully been used to guide cell response by establishing cell-biomaterial interactions. Notably, the GFOGER motif recognising the collagen-binding integrins is extensively employed as a cell adhesive peptide. In biomaterials, THPs efficiently improved cell adhesion, differentiation and function on biomaterials designed for tissue repair (especially for bone, cartilage, tendon and heart), vascular graft fabrication, wound dressing, drug delivery or immunomodulation. This review describes the key characteristics of THPs, their effect on cells when combined to biomaterials and their strong potential as biomimetic tools for regenerative medicine. STATEMENT OF SIGNIFICANCE: This review article describes how triple-helical peptides constitute efficient tools to improve cell-biomaterial interactions in tissue engineering. Triple helical peptides are bioactive molecules that mimic the architectural and biological properties of collagen. They have been successfully used to specifically recognize cell-surface receptors and provide cells seeded on biomaterials with controlled biological cues. Functionalization with triple-helical peptides has enabled researchers to improve cell function for regenerative medicine applications, such as tissue repair. However, despite encouraging results, this approach remains limited and under-exploited, and most functionalization strategies reported in the literature rely on biomolecules that are unable to address collagen-binding receptors. This review will assist researchers in selecting the correct tools to functionalize biomaterials in efforts to guide cellular response.
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Affiliation(s)
- Jean-Daniel Malcor
- Laboratory of Tissue Biology and Therapeutic Engineering, CNRS UMR 5305, University Claude Bernard-Lyon 1 and University of Lyon, 7 Passage du Vercors, Cedex 07, Lyon 69367, France.
| | - Frédéric Mallein-Gerin
- Laboratory of Tissue Biology and Therapeutic Engineering, CNRS UMR 5305, University Claude Bernard-Lyon 1 and University of Lyon, 7 Passage du Vercors, Cedex 07, Lyon 69367, France
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7
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Anderson CF, Chakroun RW, Grimmett ME, Domalewski CJ, Wang F, Cui H. Collagen-Binding Peptide-Enabled Supramolecular Hydrogel Design for Improved Organ Adhesion and Sprayable Therapeutic Delivery. NANO LETTERS 2022; 22:4182-4191. [PMID: 35522052 PMCID: PMC9844543 DOI: 10.1021/acs.nanolett.2c00967] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Spraying serves as an attractive, minimally invasive means of administering hydrogels for localized delivery, particularly due to high-throughput deposition of therapeutic depots over an entire target site of uneven surfaces. However, it remains a great challenge to design systems capable of rapid gelation after shear-thinning during spraying and adhering to coated tissues in wet, physiological environments. We report here on the use of a collagen-binding peptide to enable a supramolecular design of a biocompatible, bioadhesive, and sprayable hydrogel for sustained release of therapeutics. After spraying, the designed peptide amphiphile-based supramolecular filaments exhibit fast, physical cross-linking under physiological conditions. Our ex vivo studies suggest that the hydrogelator strongly adheres to the wet surfaces of multiple organs, and the extent of binding to collagen influences release kinetics from the gel. We envision that the sprayable organ-adhesive hydrogel can serve to enhance the efficacy of incorporated therapeutics for many biomedical applications.
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Affiliation(s)
- Caleb F Anderson
- Department of Chemical and Biomolecular Engineering and Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Rami W Chakroun
- Department of Chemical and Biomolecular Engineering and Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, Maryland 21218, United States
- Department of Chemical Engineering and Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Maria E Grimmett
- Department of Chemical and Biomolecular Engineering and Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Christopher J Domalewski
- Department of Chemical and Biomolecular Engineering and Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Feihu Wang
- Department of Chemical and Biomolecular Engineering and Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Honggang Cui
- Department of Chemical and Biomolecular Engineering and Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, Maryland 21218, United States
- Department of Oncology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
- Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231, United States
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8
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Rani A, De Leon-Rodriguez LM, Kavianinia I, McGillivray DJ, Williams DE, Brimble MA. Synthesis and characterization of mono S-lipidated peptide hydrogels: a platform for the preparation of reactive oxygen species responsive materials. Org Biomol Chem 2021; 19:3665-3677. [PMID: 33908574 DOI: 10.1039/d1ob00355k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work we report the synthesis of mono lipidated peptides containing a 3-mercaptopropionate linker in the N-terminus by means of a photoinitiated thiol-ene reaction (S-lipidation). We evaluate the self-assembling and hydrogelation properties of a library of mono S-lipidated peptides containing lipid chains of various lengths and demonstrate that hydrogelation was driven by a balance between the lipid chain's hydrophobicity and the peptide's facial hydrophobicity. We further postulate that a simple calculation using estimated values of log D could be used as a predictor of hydrogelation when designing similar systems. A mono S-lipidated peptide containing a short lipid chain that formed hydrogels was fully characterized and a mechanism for the peptide hydrogelation developed. Finally, we demonstrate that the presence of the thioether group in the mono S-lipidated peptide hydrogels, which is a feature lacking in conventional N-acyl lipidated systems, enables the controlled disassembly of the gel via oxidation to the sulfoxide by reactive oxygen species in accordance with a hydrophobicity-modulated strategy. Thus, we conclude that mono S-lipidated peptide hydrogels constitute a novel and simple tool for the development of tissue engineering and targeted drug delivery applications of diseases with overexpression of reactive oxygen species (e.g. degenerative and metabolic diseases, and cancers).
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Affiliation(s)
- Aakanksha Rani
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand. and School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - Luis M De Leon-Rodriguez
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand.
| | - Iman Kavianinia
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand. and School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand and Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand
| | - Duncan J McGillivray
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand. and School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - David E Williams
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand. and School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand. and School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand and MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand and Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand
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9
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Egli J, Esposito C, Müri M, Riniker S, Wennemers H. Influence of Lipidation on the Folding and Stability of Collagen Triple Helices-An Experimental and Theoretical Study. J Am Chem Soc 2021; 143:5937-5942. [PMID: 33830753 DOI: 10.1021/jacs.1c01512] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The folding of triple-helical collagen, the most abundant protein in nature, relies on the nucleation and propagation along the strands. Hydrophobic moieties are crucial for the folding and stability of numerous proteins. Instead, nature uses for collagen a trimerization domain and cis-trans prolyl isomerases to facilitate and accelerate triple helix formation. Yet, pendant hydrophobic moieties endow triple-helical collagen with hyperstability and accelerate the cis-trans isomerization to an extent that thermally induced unfolding and folding of collagen triple helices take place at the same speed. Here, we systematically explored the effect of pendant fatty acids on the folding and stability of collagen triple helices. Thermal denaturation and kinetic studies with a series of collagen mimetic peptides (CMPs) bearing saturated and unsaturated fatty acids with different lengths revealed that longer and more flexible fatty acid appendages increase the stability and the folding rate of collagen triple helices. Molecular dynamics simulations combined with experimental data indicate that the hydrophobic appendages stabilize the triple helix by interaction with the grooves of the collagen triple helix and accelerate the folding and unfolding process by creating a molten globule-like intermediate.
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Affiliation(s)
- Jasmine Egli
- Laboratory of Organic Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 3, 8093 Zurich, Switzerland
| | - Carmen Esposito
- Laboratory of Physical Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 2, 8093 Zurich, Switzerland
| | - Mike Müri
- Laboratory of Organic Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 3, 8093 Zurich, Switzerland
| | - Sereina Riniker
- Laboratory of Physical Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 2, 8093 Zurich, Switzerland
| | - Helma Wennemers
- Laboratory of Organic Chemistry, ETH Zurich, D-CHAB, Vladimir-Prelog-Weg 3, 8093 Zurich, Switzerland
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10
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Ahangarpour M, Kavianinia I, Harris PWR, Brimble MA. Photo-induced radical thiol-ene chemistry: a versatile toolbox for peptide-based drug design. Chem Soc Rev 2021; 50:898-944. [PMID: 33404559 DOI: 10.1039/d0cs00354a] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
While the global market for peptide/protein-based therapeutics is witnessing significant growth, the development of peptide drugs remains challenging due to their low oral bioavailability, poor membrane permeability, and reduced metabolic stability. However, a toolbox of chemical approaches has been explored for peptide modification to overcome these obstacles. In recent years, there has been a revival of interest in photoinduced radical thiol-ene chemistry as a powerful tool for the construction of therapeutic peptides.
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Affiliation(s)
- Marzieh Ahangarpour
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand.
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11
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Abstract
Lipidation of polypeptides with a fatty acid to form N-linked lipopeptides can be a time consuming process due to the need to mask other reactive function groups present on the side chains of amino acids. Cysteine Lipidation on a Peptide or Amino acid (CLipPA) technology enables the direct lipidation of unprotected peptides containing a free thiol group to afford S-lipidated lipopeptides. A generalized procedure for the synthesis of S-lipopeptides is described which facilities rapid preparation of tens of analogs of lipopeptides from a single thiolated polypeptide precursor.
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Affiliation(s)
- Victor Yim
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Yann O Hermant
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Paul W R Harris
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand.
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand.
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand.
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand.
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand.
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand.
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12
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Cudic M, Fields GB. Modulation of receptor binding to collagen by glycosylated 5-hydroxylysine: Chemical biology approaches made feasible by Carpino's Fmoc group. Pept Sci (Hoboken) 2020; 112. [PMID: 33073165 DOI: 10.1002/pep2.24156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The creation of the 9-fluorenylmethoxycarbonyl (Fmoc) group by the Carpino laboratory facilitated the synthesis of peptides containing acid-sensitive groups, such as O-linked glycosides. To fully investigative collagen biochemistry, one needs to assemble peptides that possess glycosylated 5-hydroxylysine (Hyl). A convenient method for the synthesis of Fmoc-Hyl(ε-tert-butyloxycarbonyl (Boc),O-tert-butyldimethylsilyl (TBDMS)) and efficient methods for the synthesis of Fmoc-Hyl[ε-Boc,O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)] have been developed. Glycosylated Fmoc-Hyl derivatives were used to construct a series of types I-IV collagen-model triple-helical peptides (THPs) that incorporated known or proposed receptor binding sites. Glycosylation of Hyl was found to strongly down-regulate the binding of CD44 and the α3β1 integrin to collagen, while the impact on α2β1 integrin binding was more modest. Molecular modeling of integrin binding indicated that Hyl glycosylation directly impacted the association between the α3β1 integrin metal ion-dependent adhesion site (MIDAS) and the receptor binding site within type IV collagen. The Fmoc solid-phase strategy ultimately allowed for chemical biology approaches to be utilized to study tumor cell interactions with glycosylated collagen sequences and document the modulation of receptor interactions by Hyl posttranslational modification.
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Affiliation(s)
- Maré Cudic
- Institute for Human Health & Disease Intervention (I-HEALTH) and the Department of Chemistry & Biochemistry, Florida Atlantic University, 5353 Parkside Drive, Jupiter, FL 33458 U.S.A
| | - Gregg B Fields
- Institute for Human Health & Disease Intervention (I-HEALTH) and the Department of Chemistry & Biochemistry, Florida Atlantic University, 5353 Parkside Drive, Jupiter, FL 33458 U.S.A
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13
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Higashi N, Yoshikawa R, Koga T. Photo-responsive azobenzene interactions promote hierarchical self-assembly of collagen triple-helical peptides to various higher-order structures. RSC Adv 2020; 10:15947-15954. [PMID: 35493640 PMCID: PMC9052399 DOI: 10.1039/d0ra02906h] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 04/02/2020] [Indexed: 01/20/2023] Open
Abstract
Collagen is an essential structural protein in animal tissues and plays key roles in cellular modulation. We investigated methods to discover collagen model peptides (CMPs) that would self-assemble into triple helices and then grow into supramolecular organizations with diverse morphological features, which would be valuable as biomaterials. This challenging undertaking was achieved by placing azobenzene groups on the ends of the CMPs, (GPO)n (n = 3–10), Azo-(GPO)n. In a dilute aqueous solution (80 μM), CD spectra indicated that the Azo-(GPO)n (n > 4) formed triple helices due to strong hydrophobic azobenzene interactions, and that helix stability was increased with the peptide segment length. The resulting triple helices induced a specific azobenzene orientation through turned and twisted configurations as shown by CD spectra. TEM observations for the same solutions disclosed the morphologies for the Azo-CMPs. Azo-(GPO)3, having the shortest peptide segment, showed no nanostructure, both Azo-(GPO)4 and Azo-(GPO)5 provided consistent well-developed nanofiber structures resembling the natural collagen fibers, and Azo-(GPO)ns (n = 6–10) grew into flexible rod-like micelle fibers. In addition, alkyl chain-attached CmAzo-(GPO)5 displayed a toroidal morphology, and Azp-deg-(GPO)5 having a hydrophilic spacer assembled into a bilayer vesicle structure. These diverse morphological features are considered to be due to the characteristics of the pre-organized triple helix units. Photo-isomerization of the azobenzene moiety brought about the disappearance of such characteristic nano-architectures. When the solution concentration was increased up to 1 wt%, only Azo-(GPO)4 and Azo-(GPO)5 spontaneously formed hydrogels exhibiting a satisfactory gel-to-sol transition upon UV irradiation. Collagen is an essential structural protein in animal tissues and plays key roles in cellular modulation.![]()
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Affiliation(s)
- Nobuyuki Higashi
- Department of Molecular Chemistry and Biochemistry
- Faculty of Science and Engineering
- Doshisha University
- Kyotanabe
- Japan
| | - Ryo Yoshikawa
- Department of Molecular Chemistry and Biochemistry
- Faculty of Science and Engineering
- Doshisha University
- Kyotanabe
- Japan
| | - Tomoyuki Koga
- Department of Molecular Chemistry and Biochemistry
- Faculty of Science and Engineering
- Doshisha University
- Kyotanabe
- Japan
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14
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Abstract
We explore the design and synthesis of hydrogel scaffolds for tissue engineering from the perspective of the underlying polymer chemistry. The key polymers, properties and architectures used, and their effect on tissue growth are discussed.
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15
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Hermant YO, Cameron AJ, Harris PWR, Brimble MA. Synthesis of Antimicrobial Lipopeptides Using the "CLipPA" Thiol-Ene Reaction. Methods Mol Biol 2020; 2103:263-274. [PMID: 31879932 DOI: 10.1007/978-1-0716-0227-0_18] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cysteine Lipidation on a Peptide or Amino acid (CLipPA) technology provides a facile method for the lipidation of unprotected peptides containing a free thiol group by using a "click" radical-initiated thiol-ene reaction to effect addition to a vinyl ester. The methodology is highly versatile, leading to high conversion rates while maintaining excellent chemoselectivity and tolerance for a large variety of peptide substrates and functional groups. Herein we describe the simple general procedure for the synthesis of a focused library of bioactive S-lipidated antimicrobial peptides via late-stage derivatization using solution-phase CLipPA lipidation.
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Affiliation(s)
- Yann O Hermant
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Alan J Cameron
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Paul W R Harris
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand.
- The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand.
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand.
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16
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Varanko A, Saha S, Chilkoti A. Recent trends in protein and peptide-based biomaterials for advanced drug delivery. Adv Drug Deliv Rev 2020; 156:133-187. [PMID: 32871201 PMCID: PMC7456198 DOI: 10.1016/j.addr.2020.08.008] [Citation(s) in RCA: 142] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/14/2020] [Accepted: 08/14/2020] [Indexed: 02/07/2023]
Abstract
Engineering protein and peptide-based materials for drug delivery applications has gained momentum due to their biochemical and biophysical properties over synthetic materials, including biocompatibility, ease of synthesis and purification, tunability, scalability, and lack of toxicity. These biomolecules have been used to develop a host of drug delivery platforms, such as peptide- and protein-drug conjugates, injectable particles, and drug depots to deliver small molecule drugs, therapeutic proteins, and nucleic acids. In this review, we discuss progress in engineering the architecture and biological functions of peptide-based biomaterials -naturally derived, chemically synthesized and recombinant- with a focus on the molecular features that modulate their structure-function relationships for drug delivery.
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Affiliation(s)
| | | | - Ashutosh Chilkoti
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA.
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17
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Fields GB. Methods for the Construction of Collagen-Based Triple-Helical Peptides Designed as Matrix Metalloproteinase Inhibitors. Methods Mol Biol 2019; 1944:229-252. [PMID: 30840247 DOI: 10.1007/978-1-4939-9095-5_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The triple-helical structure of collagen has been accurately reproduced in numerous chemical and recombinant model systems. Triple-helical peptides have found application for dissecting collagen-stabilizing forces, isolating receptor and protein binding sites in collagen, evaluating collagen-mediated cell signaling activities, mechanistic examination of collagenolytic proteases, and developing novel biomaterials and drug delivery vehicles. Due to their inherent stability to general proteolysis, triple-helical peptides present an opportunity as in vivo inhibitory agents. The present chapter provides methods for the construction of collagen-based triple-helical peptides designed as matrix metalloproteinase inhibitors.
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Affiliation(s)
- Gregg B Fields
- Department of Chemistry and Biochemistry, Florida Atlantic University, Jupiter, FL, USA.
- Department of Chemistry, Scripps Research, Jupiter, FL, USA.
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18
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Li Y, Lock LL, Wang Y, Ou SH, Stern D, Schön A, Freire E, Xu X, Ghose S, Li ZJ, Cui H. Bioinspired supramolecular engineering of self-assembling immunofibers for high affinity binding of immunoglobulin G. Biomaterials 2018; 178:448-457. [PMID: 29706234 DOI: 10.1016/j.biomaterials.2018.04.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/11/2018] [Accepted: 04/14/2018] [Indexed: 01/14/2023]
Abstract
Many one-dimensional (1D) nanostructures are constructed by self-assembly of peptides or peptide conjugates containing a short β-sheet sequence as the core building motif essential for the intermolecular hydrogen bonding that promotes directional, anisotropic growth of the resultant assemblies. While this molecular engineering strategy has led to the successful production of a plethora of bioactive filamentous β-sheet assemblies for interfacing with biomolecules and cells, concerns associated with effective presentation of α-helical epitopes and their function preservation have yet to be resolved. In this context, we report on the direct conjugation of the protein A mimicking peptide Z33, a motif containing two α-helices, to linear hydrocarbons to create self-assembling immuno-amphiphiles (IAs). Our results suggest that the resulting amphiphilic peptides can, despite lacking the essential β-sheet segment, effectively associate under physiological conditions into supramolecular immunofibers (IFs) while preserving their native α-helical conformation. Isothermal titration calorimetry (ITC) measurements confirmed that these self-assembling immunofibers can bind to the human immunoglobulin G class 1 (IgG1) with high specificity at pH 7.4, but with significantly weakened binding at pH 2.8. We further demonstrated the accessibility of Z33 ligand in the immunofibers using transmission electron microscopy (TEM) and confocal imaging. We believe these results shed important light into the supramolecular engineering of α-helical peptides into filamentous assemblies that may possess an important potential for antibody isolation.
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Affiliation(s)
- Yi Li
- Department of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, United States
| | - Lye Lin Lock
- Biologics Process Development, Global Product Development and Supply, Bristol-Myers Squibb, Devens, MA 01434, United States
| | - Yuzhu Wang
- Department of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, United States
| | - Shih-Hao Ou
- Department of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, United States
| | - David Stern
- Department of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, United States
| | - Arne Schön
- Department of Biology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, United States
| | - Ernesto Freire
- Department of Biology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, United States
| | - Xuankuo Xu
- Biologics Process Development, Global Product Development and Supply, Bristol-Myers Squibb, Devens, MA 01434, United States.
| | - Sanchayita Ghose
- Biologics Process Development, Global Product Development and Supply, Bristol-Myers Squibb, Devens, MA 01434, United States
| | - Zheng Jian Li
- Biologics Process Development, Global Product Development and Supply, Bristol-Myers Squibb, Devens, MA 01434, United States
| | - Honggang Cui
- Department of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, United States; Department of Oncology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21205, United States.
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19
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Sahoo JK, VandenBerg MA, Webber MJ. Injectable network biomaterials via molecular or colloidal self-assembly. Adv Drug Deliv Rev 2018; 127:185-207. [PMID: 29128515 DOI: 10.1016/j.addr.2017.11.005] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 09/16/2017] [Accepted: 11/06/2017] [Indexed: 11/19/2022]
Abstract
Self-assembly is a powerful tool to create functional materials. A specific application for which self-assembled materials are ideally suited is in creating injectable biomaterials. Contrasting with traditional biomaterials that are implanted through surgical means, injecting biomaterials through the skin offers numerous advantages, expanding the scope and impact for biomaterials in medicine. In particular, self-assembled biomaterials prepared from molecular or colloidal interactions have been frequently explored. The strategies to create these materials are varied, taking advantage of engineered oligopeptides, proteins, and nanoparticles as well as affinity-mediated crosslinking of synthetic precursors. Self-assembled materials typically facilitate injectability through two different mechanisms: i) in situ self-assembly, whereby materials would be administered in a monomeric or oligomeric form and self-assemble in response to some physiologic stimulus, or ii) self-assembled materials that, by virtue of their dynamic, non-covalent interactions, shear-thin to facilitate flow within a syringe and subsequently self-heal into its reassembled material form at the injection site. Indeed, many classes of materials are capable of being injected using a combination of these two mechanisms. Particular utility has been noted for self-assembled biomaterials in the context of tissue engineering, regenerative medicine, drug delivery, and immunoengineering. Given the controlled and multifunctional nature of many self-assembled materials demonstrated to date, we project a future where injectable self-assembled biomaterials afford improved practice in advancing healthcare.
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Affiliation(s)
- Jugal Kishore Sahoo
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA
| | - Michael A VandenBerg
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA
| | - Matthew J Webber
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA; Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA; Harper Cancer Research Institute, University of Notre Dame, Notre Dame, IN 46556, USA; Advanced Diagnostics and Therapeutics, University of Notre Dame, Notre Dame, IN 46556, USA; Warren Family Center for Drug Discovery and Development, University of Notre Dame, Notre Dame, IN 46556, USA; Center for Nanoscience and Technology (NDnano), University of Notre Dame, Notre Dame, IN 46556, USA.
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20
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Determining the Substrate Specificity of Matrix Metalloproteases using Fluorogenic Peptide Substrates. Methods Mol Biol 2018. [PMID: 28299736 DOI: 10.1007/978-1-4939-6863-3_8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
A continuous assay method, such as the one that utilizes an increase in fluorescence upon hydrolysis, allows for rapid and convenient kinetic evaluation of proteases. To better understand MMP behaviors toward native substrates, a variety of fluorescence resonance energy transfer (FRET)/intramolecular fluorescence energy transfer (IFET) triple-helical substrates have been constructed to examine the collagenolytic activity of MMP family members. Results of these studies have been valuable for providing insights into (a) the relative triple-helical peptidase activities of the various collagenolytic MMPs, (b) the collagen preferences of these MMPs, and (c) the relative roles of MMP domains and specific residues in efficient collagenolysis. The present chapter provides an overview of MMP FRET triple-helical substrates and describes how to construct and utilize these substrates.
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21
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Meng Z, Kang Z, Sun C, Yang S, Zhao B, Feng S, Meng Q, Liu K. Enhanced gene transfection efficiency by use of peptide vectors containing laminin receptor-targeting sequence YIGSR. NANOSCALE 2018; 10:1215-1227. [PMID: 29292451 DOI: 10.1039/c7nr05843h] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This study presents the design and evaluation of a series of multifunctional peptides and their gene delivery abilities. The peptide sequences contained a cell-penetrating segment, six continuous histidine residues, a stearyl moiety and a laminin receptor-targeting segment. The YIGSR segment promoted cellular uptake through the interaction with laminin receptors on the surface of cells, which resulted in a great improvement in gene transfection efficiency. The conformation, particle size and zeta potential of peptide/DNA complexes were characterized via circular dichroism and dynamic light scattering. Their gene transfection efficiency was investigated by fluorescence-activated cell sorting and confocal microscopy. The transfection efficiency of the designed peptide vectors was higher than that of Lipo 2000. The peptide TAT-H6-K(C18)-YIGSR displayed transfection efficiencies at N/P ratios of 6, which was 3.5 and 7 times higher than that of Lipo 2000 in B16F10 and 293T cells, respectively. All peptides exhibited lower cytotoxicity than Lipo 2000 in B16F10 and 293T cells. In summary, the designed YIGSR-containing multifunctional peptide gene vectors promoted cellular uptake and gene transfection. Their in vivo transfection ability was investigated in zebrafish, and the transfection efficiency was determined by confocal microscopy and bioluminescence imaging. The peptide vectors, owing to their relatively short sequences and ease of functionalization, offer a promising approach for gene delivery because of their low cytotoxicity and high transfection efficiency.
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Affiliation(s)
- Zhao Meng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, 27 Taiping Road, Beijing 100850, China.
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22
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Abstract
Peptide subunit vaccines enable the specific activation of an immune response without the shortcomings of killed or attenuated pathogens. However, peptide subunit vaccines tend to be less immunogenic than those based on whole organisms. To improve peptide immunogenicity, biomaterials-based platforms have been developed. One such platform, the peptide amphiphile micelle platform, has displayed a unique ability to dramatically improve observed immune responses. Here we describe the design, synthesis, characterization, and application of peptide amphiphile micelles to elicit a robust immune response.
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Affiliation(s)
- John C Barrett
- Institute for Molecular Engineering, University of Chicago, Chicago, IL, USA
| | - Matthew V Tirrell
- Institute for Molecular Engineering, University of Chicago, Chicago, IL, USA.
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23
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Li Y, Wang Y, Ou SH, Lock LL, Xu X, Ghose S, Li ZJ, Cui H. Conformation Preservation of α-Helical Peptides within Supramolecular Filamentous Assemblies. Biomacromolecules 2017; 18:3611-3620. [DOI: 10.1021/acs.biomac.7b00992] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yi Li
- Department
of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Yuzhu Wang
- Department
of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Shih-Hao Ou
- Department
of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Lye Lin Lock
- Biologics
Process Development, Global Product Development and Supply, Bristol-Myers Squibb, Devens, Massachusetts 01434, United States
| | - Xuankuo Xu
- Biologics
Process Development, Global Product Development and Supply, Bristol-Myers Squibb, Devens, Massachusetts 01434, United States
| | - Sanchayita Ghose
- Biologics
Process Development, Global Product Development and Supply, Bristol-Myers Squibb, Devens, Massachusetts 01434, United States
| | - Zheng Jian Li
- Biologics
Process Development, Global Product Development and Supply, Bristol-Myers Squibb, Devens, Massachusetts 01434, United States
| | - Honggang Cui
- Department
of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
- Department
of Oncology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
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24
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Current approaches for modulation of the nanoscale interface in the regulation of cell behavior. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 14:2455-2464. [PMID: 28552647 PMCID: PMC6173683 DOI: 10.1016/j.nano.2017.03.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 02/20/2017] [Accepted: 03/09/2017] [Indexed: 11/22/2022]
Abstract
Regulation of cell behavior in response to nanoscale features has been the focus of much research in recent years and the successful generation of nanoscale features capable of mimicking the natural nanoscale interface has been of great interest in the field of biomaterials research. In this review, we discuss relevant nanofabrication techniques and how they are combined with bioengineering applications to mimic the natural extracellular matrix (ECM) and create valuable nanoscale interfaces.
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25
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Meng Z, Luan L, Kang Z, Feng S, Meng Q, Liu K. Histidine-enriched multifunctional peptide vectors with enhanced cellular uptake and endosomal escape for gene delivery. J Mater Chem B 2016; 5:74-84. [PMID: 32263436 DOI: 10.1039/c6tb02862d] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Peptide vectors offer a promising gene delivery approach because of their biocompatibility and ease of functionalization. This article describes the design and evaluation of a series of multifunctional peptides and their gene delivery abilities. The peptides were composed of a cell-penetrating segment, stearyl moiety, cationic amphiphilic α-helical segment, and cysteine and histidine residues. The proton sponge effect of histidine residues at low pH and the α-helical conformation should improve endosomal escape. Inclusion of d-type amino acids should improve proteolytic stability. The conformation, particle size and zeta potential of peptide/DNA complexes were characterized by circular dichroism and dynamic light scattering. Gene transfection efficiency was investigated by fluorescence-activated cell sorting and confocal microscopy. Transfection efficiencies of the designed peptide vectors were better than those of C18-C(LLKK)3C-TAT and Lipo2000. d-Type peptide C18-c(llhh)3c-tat showed three times higher transfection efficiency at N/P ratios of 6 and 8 than Lipo2000 in NIH-3T3 and 293T cells. All peptides showed lower cytotoxicity than Lipo2000 in NIH-3T3 and 293T cells. In the presence of trypsin or serum in vitro, d-type peptides showed better stability than l-type peptides. Overall, the designed histidine-enriched multifunctional peptide gene vectors promoted cellular uptake, endosomal escape and gene transfection.
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Affiliation(s)
- Zhao Meng
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, P. R. China.
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26
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Singh N, Kumar M, Miravet JF, Ulijn RV, Escuder B. Peptide-Based Molecular Hydrogels as Supramolecular Protein Mimics. Chemistry 2016; 23:981-993. [PMID: 27530095 DOI: 10.1002/chem.201602624] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Indexed: 12/14/2022]
Abstract
This Minireview concerns recent advances in the design, synthesis, and application of low molecular-weight peptidic hydrogelators. The sequence-specific combinations of amino acid side chain functionalities combined with hydrogen bonding of amide backbones and hydrophobic (aromatic) capping groups give these peptidic molecules the intrinsic tendency to self-assemble. The most prevalent designs include N-capped amino acid residues, bolamphiphilic peptides, and amphipathic peptides. Factors such as hydrophobic effects, the Hofmeister effect, and tunable ionization influence their aggregation properties. The self-assembly of simple bio-inspired building blocks into higher organized structures allows comparisons to be drawn with proteins and their complex functionalities, providing preliminary insights into complex biological functions and also enabling their application in a wide range of fields including catalysis, biomedical applications, and mimicry of natural dissipative systems. The Minireview is concluded by a short summary and outlook, highlighting the advances and steps required to bridge the gaps in the understanding of such systems.
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Affiliation(s)
- Nishant Singh
- Departament de Química Inorgànica i Orgànica, Universitat Jaume I, Av. Sos Baynat, s/n, 12071, Castelló, Spain
| | - Mohit Kumar
- Advanced Science Research Centre (ASRC), City University of New York, 85 St Nicholas Terrace, New York, NY, 10031, USA
| | - Juan F Miravet
- Departament de Química Inorgànica i Orgànica, Universitat Jaume I, Av. Sos Baynat, s/n, 12071, Castelló, Spain
| | - Rein V Ulijn
- Advanced Science Research Centre (ASRC), City University of New York, 85 St Nicholas Terrace, New York, NY, 10031, USA.,WestCHEM/Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK.,Department of Chemistry and Biochemistry, City University of New York-Hunter College, 695 Park Ave., New York, NY, 10065, USA.,PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, NY, 10016, USA
| | - Beatriu Escuder
- Departament de Química Inorgànica i Orgànica, Universitat Jaume I, Av. Sos Baynat, s/n, 12071, Castelló, Spain
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27
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Fields GB, Stawikowski MJ. Imaging Matrix Metalloproteinase Activity Implicated in Breast Cancer Progression. Methods Mol Biol 2016; 1406:303-29. [PMID: 26820965 DOI: 10.1007/978-1-4939-3444-7_25] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Proteolysis has been cited as an important contributor to cancer initiation and progression. One can take advantage of tumor-associated proteases to selectively deliver imaging agents. Protease-activated imaging systems have been developed using substrates designed for hydrolysis by members of the matrix metalloproteinase (MMP) family. We presently describe approaches by which one can optically image matrix metalloproteinase activity implicated in breast cancer progression, with consideration of selective versus broad protease probes.
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Affiliation(s)
- Gregg B Fields
- Department of Chemistry & Biochemistry, Florida Atlantic University, Jupiter, FL, 33458, USA. .,Department of Chemistry, The Scripps Research Institute/Scripps Florida, Jupiter, FL, 33458, USA. .,Departments of Chemistry and Biology, Torrey Pines Institute for Molecular Studies, Port St. Lucie, FL, 34987, USA.
| | - Maciej J Stawikowski
- Department of Chemistry & Biochemistry, Florida Atlantic University, Jupiter, FL, 33458, USA
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28
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Miotto M, Gouveia RM, Connon CJ. Peptide Amphiphiles in Corneal Tissue Engineering. J Funct Biomater 2015; 6:687-707. [PMID: 26258796 PMCID: PMC4598678 DOI: 10.3390/jfb6030687] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 07/29/2015] [Accepted: 08/03/2015] [Indexed: 12/22/2022] Open
Abstract
The increasing interest in effort towards creating alternative therapies have led to exciting breakthroughs in the attempt to bio-fabricate and engineer live tissues. This has been particularly evident in the development of new approaches applied to reconstruct corneal tissue. The need for tissue-engineered corneas is largely a response to the shortage of donor tissue and the lack of suitable alternative biological scaffolds preventing the treatment of millions of blind people worldwide. This review is focused on recent developments in corneal tissue engineering, specifically on the use of self-assembling peptide amphiphiles for this purpose. Recently, peptide amphiphiles have generated great interest as therapeutic molecules, both in vitro and in vivo. Here we introduce this rapidly developing field, and examine innovative applications of peptide amphiphiles to create natural bio-prosthetic corneal tissue in vitro. The advantages of peptide amphiphiles over other biomaterials, namely their wide range of functions and applications, versatility, and transferability are also discussed to better understand how these fascinating molecules can help solve current challenges in corneal regeneration.
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Affiliation(s)
- Martina Miotto
- Institute of Genetic Medicine, Newcastle University, International Centre for Life, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK.
| | - Ricardo M Gouveia
- Institute of Genetic Medicine, Newcastle University, International Centre for Life, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK.
| | - Che J Connon
- Institute of Genetic Medicine, Newcastle University, International Centre for Life, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK.
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29
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Luan L, Meng Q, Xu L, Meng Z, Yan H, Liu K. Peptide amphiphiles with multifunctional fragments promoting cellular uptake and endosomal escape as efficient gene vectors. J Mater Chem B 2015; 3:1068-1078. [DOI: 10.1039/c4tb01353k] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A series of peptides containing multiple functional fragments were designed as gene-delivery vectors with transfection efficiency comparable to Lipofectamine 2000.
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Affiliation(s)
- Liang Luan
- Beijing Institute of Pharmacology & Toxicology
- Beijing
- P. R. China
| | - Qingbin Meng
- Beijing Institute of Pharmacology & Toxicology
- Beijing
- P. R. China
| | - Liang Xu
- Beijing Institute of Pharmacology & Toxicology
- Beijing
- P. R. China
| | - Zhao Meng
- Beijing Institute of Pharmacology & Toxicology
- Beijing
- P. R. China
| | - Husheng Yan
- Key Laboratory of Functional Polymer Materials (Ministry of Education) and Institute of Polymer Chemistry
- Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071
- P. R. China
| | - Keliang Liu
- Beijing Institute of Pharmacology & Toxicology
- Beijing
- P. R. China
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30
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López Deber MP, Hickman DT, Nand D, Baldus M, Pfeifer A, Muhs A. Engineering amyloid-like assemblies from unstructured peptides via site-specific lipid conjugation. PLoS One 2014; 9:e105641. [PMID: 25207975 PMCID: PMC4160191 DOI: 10.1371/journal.pone.0105641] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 07/22/2014] [Indexed: 11/21/2022] Open
Abstract
Aggregation of amyloid beta (Aβ) into oligomers and fibrils is believed to play an important role in the development of Alzheimer’s disease (AD). To gain further insight into the principles of aggregation, we have investigated the induction of β-sheet secondary conformation from disordered native peptide sequences through lipidation, in 1–2% hexafluoroisopropanol (HFIP) in phosphate buffered saline (PBS). Several parameters, such as type and number of lipid chains, peptide sequence, peptide length and net charge, were explored keeping the ratio peptide/HFIP constant. The resulting lipoconjugates were characterized by several physico-chemical techniques: Circular Dichroism (CD), Attenuated Total Reflection InfraRed (ATR-IR), Thioflavin T (ThT) fluorescence, Dynamic Light Scattering (DLS), solid-state Nuclear Magnetic Resonance (ssNMR) spectroscopy and Electron Microscopy (EM). Our data demonstrate the generation of β-sheet aggregates from numerous unstructured peptides under physiological pH, independent of the amino acid sequence. The amphiphilicity pattern and hydrophobicity of the scaffold were found to be key factors for their assembly into amyloid-like structures.
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Affiliation(s)
| | | | - Deepak Nand
- Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The Netherlands
| | - Marc Baldus
- Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The Netherlands
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31
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Dube N, Seo JW, Dong H, Shu J, Lund R, Mahakian LM, Ferrara KW, Xu T. Effect of alkyl length of peptide-polymer amphiphile on cargo encapsulation stability and pharmacokinetics of 3-helix micelles. Biomacromolecules 2014; 15:2963-70. [PMID: 24988250 PMCID: PMC4130244 DOI: 10.1021/bm5005788] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 07/01/2014] [Indexed: 02/01/2023]
Abstract
3-Helix micelles have demonstrated excellent in vitro and in vivo stability. Previous studies showed that the unique design of the peptide-polymer conjugate based on protein tertiary structure as the headgroup is the main design factor to achieve high kinetic stability. In this contribution, using amphiphiles with different alkyl tails, namely, C16 and C18, we quantified the effect of alkyl length on the stability of 3-helix micelles to delineate the contribution of the micellar core and shell on the micelle stability. Both amphiphiles form well-defined micelles, <20 nm in size, and show good stability, which can be attributed to the headgroup design. C18-micelles exhibit slightly higher kinetic stability in the presence of serum proteins at 37 °C, where the rate constant of subunit exchange is 0.20 h(-1) for C18-micelles vs 0.22 h(-1) for C16-micelles. The diffusion constant for drug release from C18-micelles is approximately half of that for C16-micelles. The differences between the two micelles are significantly more pronounced in terms of in vivo stability and extent of tumor accumulation. C18-micelles exhibit significantly longer blood circulation time of 29.5 h, whereas C16-micelles have a circulation time of 16.1 h. The extent of tumor accumulation at 48 h after injection is ∼43% higher for C18-micelles. The present studies underscore the importance of core composition on the biological behavior of 3-helix micelles. The quantification of the effect of this key design parameter on the stability of 3-helix micelles provides important guidelines for carrier selection and use in complex environment.
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Affiliation(s)
- Nikhil Dube
- Department of Materials Science & Engineering and Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Jai W. Seo
- Department
of Biomedical Engineering, University of
California, Davis, California 95616, United States
| | - He Dong
- Department of Materials Science & Engineering and Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Jessica
Y. Shu
- Department of Materials Science & Engineering and Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Reidar Lund
- Department of Materials Science & Engineering and Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Lisa M. Mahakian
- Department
of Biomedical Engineering, University of
California, Davis, California 95616, United States
| | - Katherine W. Ferrara
- Department
of Biomedical Engineering, University of
California, Davis, California 95616, United States
| | - Ting Xu
- Department of Materials Science & Engineering and Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials
Science Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
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32
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Stawikowski MJ, Aukszi B, Stawikowska R, Cudic M, Fields GB. Glycosylation modulates melanoma cell α2β1 and α3β1 integrin interactions with type IV collagen. J Biol Chem 2014; 289:21591-604. [PMID: 24958723 PMCID: PMC4118119 DOI: 10.1074/jbc.m114.572073] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 06/20/2014] [Indexed: 01/02/2023] Open
Abstract
Although type IV collagen is heavily glycosylated, the influence of this post-translational modification on integrin binding has not been investigated. In the present study, galactosylated and nongalactosylated triple-helical peptides have been constructed containing the α1(IV)382-393 and α1(IV)531-543 sequences, which are binding sites for the α2β1 and α3β1 integrins, respectively. All peptides had triple-helical stabilities of 37 °C or greater. The galactosylation of Hyl(393) in α1(IV)382-393 and Hyl(540) and Hyl(543) in α1(IV)531-543 had a dose-dependent influence on melanoma cell adhesion that was much more pronounced in the case of α3β1 integrin binding. Molecular modeling indicated that galactosylation occurred on the periphery of α2β1 integrin interaction with α1(IV)382-393 but right in the middle of α3β1 integrin interaction with α1(IV)531-543. The possibility of extracellular deglycosylation of type IV collagen was investigated, but no β-galactosidase-like activity capable of collagen modification was found. Thus, glycosylation of collagen can modulate integrin binding, and levels of glycosylation could be altered by reduction in expression of glycosylation enzymes but most likely not by extracellular deglycosylation activity.
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Affiliation(s)
- Maciej J Stawikowski
- From the Torrey Pines Institute for Molecular Studies, Port St. Lucie, Florida 34987 and
| | - Beatrix Aukszi
- the Nova Southeastern University, Fort Lauderdale, Florida 33314
| | - Roma Stawikowska
- From the Torrey Pines Institute for Molecular Studies, Port St. Lucie, Florida 34987 and
| | - Mare Cudic
- From the Torrey Pines Institute for Molecular Studies, Port St. Lucie, Florida 34987 and
| | - Gregg B Fields
- From the Torrey Pines Institute for Molecular Studies, Port St. Lucie, Florida 34987 and
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33
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Hernandez-Gordillo V, Chmielewski J. Mimicking the extracellular matrix with functionalized, metal-assembled collagen peptide scaffolds. Biomaterials 2014; 35:7363-73. [PMID: 24933513 DOI: 10.1016/j.biomaterials.2014.05.019] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 05/08/2014] [Indexed: 12/27/2022]
Abstract
Natural and synthetic three-dimensional (3-D) scaffolds that mimic the microenvironment of the extracellular matrix (ECM), with growth factor storage/release and the display of cell adhesion signals, offer numerous advantages for regenerative medicine and in vitro morphogenesis and oncogenesis modeling. Here we report the design of collagen mimetic peptides (CMPs) that assemble into a highly crosslinked 3-D matrix in response to metal ion stimuli, that may be functionalized with His-tagged cargoes, such as green fluorescent protein (GFP-His8) and human epidermal growth factor (hEGF-His6). The bound hEGF-His6 was found to gradually release from the matrix in vitro and induce cell proliferation in the EGF-dependent cell line MCF10A. The additional incorporation of a cell adhesion sequence (RGDS) at the N-terminus of the CMP creates an environment that facilitated the organization of matrix-encapsulated MCF10A cells into spheroid structures, thus mimicking the ECM environment.
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Affiliation(s)
| | - Jean Chmielewski
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA.
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34
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Tokmina-Roszyk M, Tokmina-Roszyk D, Bhowmick M, Fields GB. Development of a Förster resonance energy transfer assay for monitoring bacterial collagenase triple-helical peptidase activity. Anal Biochem 2014; 453:61-9. [PMID: 24608089 DOI: 10.1016/j.ab.2014.02.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 01/30/2014] [Accepted: 02/23/2014] [Indexed: 11/25/2022]
Abstract
Due to their efficiency in the hydrolysis of the collagen triple helix, Clostridium histolyticum collagenases are used for isolation of cells from various tissues, including isolation of the human pancreatic islets. However, the instability of clostridial collagenase I (Col G) results in a degraded Col G that has weak collagenolytic activity and an adverse effect on islet isolation and viability. A Förster resonance energy transfer triple-helical peptide substrate (fTHP) has been developed for selective evaluation of bacterial collagenase activity. The fTHP [sequence: Gly-mep-Flp-(Gly-Pro-Hyp)4-Gly-Lys(Mca)-Thr-Gly-Pro-Leu-Gly-Pro-Pro-Gly-Lys(Dnp)-Ser-(Gly-Pro-Hyp)4-NH2] had a melting temperature (Tm) of 36.2°C and was hydrolyzed efficiently by bacterial collagenase (k(cat)/K(M)=25,000s(-1)M(-1)) but not by clostripain, trypsin, neutral protease, thermolysin, or elastase. The fTHP bacterial collagenase assay allows for rapid and specific assessment of enzyme activity toward triple helices and, thus, potential application for evaluating the efficiency of cell isolation by collagenases.
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Affiliation(s)
| | | | | | - Gregg B Fields
- Torrey Pines Institute for Molecular Studies, Port St. Lucie, FL 34987, USA.
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35
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Akram M, Kumar D, Kabir-ud-Din. Zinc dipeptide complex ([Zn(II)–Gly–Tyr]+)–ninhydrin reaction in the presence of gemini surfactants: A kinetic study. J Mol Liq 2013. [DOI: 10.1016/j.molliq.2013.09.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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36
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Cao M, Cao C, Zhang L, Xia D, Xu H. Tuning of peptide assembly through force balance adjustment. J Colloid Interface Sci 2013; 407:287-95. [DOI: 10.1016/j.jcis.2013.06.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 06/18/2013] [Accepted: 06/20/2013] [Indexed: 11/15/2022]
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37
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Versluis F, Voskuhl J, van Kolck B, Zope H, Bremmer M, Albregtse T, Kros A. In situ modification of plain liposomes with lipidated coiled coil forming peptides induces membrane fusion. J Am Chem Soc 2013; 135:8057-62. [PMID: 23659206 DOI: 10.1021/ja4031227] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Complementary coiled coil forming lipidated peptides embedded in liposomal membranes are able to induce rapid, controlled, and targeted membrane fusion. Traditionally, such fusogenic liposomes are prepared by mixing lipids and lipidated peptides in organic solvent (e.g., chloroform). Here we prepared fusogenic liposomes in situ, i.e., by addition of a lipidated peptide solution to plain liposomes. As the lipid anchor is vital for the correct insertion of lipidated peptides into liposomal membranes, a small library of lipidated coiled coil forming peptides was designed in which the lipid structure was varied. The fusogenicity was screened using lipid and content mixing assays showing that cholesterol modified coiled coil peptides induced the most efficient fusion of membranes. Importantly, both lipid and content mixing experiments demonstrated that the in situ modification of plain liposomes with the cholesterol modified peptides yielded highly fusogenic liposomes. This work shows that existing membranes can be activated with lipidated coiled coil forming peptides, which might lead to highly potent applications such as the fusion of liposomes with cells.
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Affiliation(s)
- Frank Versluis
- Soft Matter Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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38
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Kaur R, Kishore R. Isostructural unbranched alkyl-chains as tools for stabilizing β-turn structure. Biopolymers 2013; 99:419-26. [DOI: 10.1002/bip.22201] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Revised: 10/23/2012] [Accepted: 12/22/2012] [Indexed: 12/12/2022]
Affiliation(s)
- Rajwant Kaur
- Protein Science & Engineering Division; CSIR-Institute of Microbial Technology; Sector 39-A; Chandigarh; 160 036; India
| | - Raghuvansh Kishore
- Protein Science & Engineering Division; CSIR-Institute of Microbial Technology; Sector 39-A; Chandigarh; 160 036; India
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39
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Wang Z, Fu L, Yan ECY. C-H stretch for probing kinetics of self-assembly into macromolecular chiral structures at interfaces by chiral sum frequency generation spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:4077-83. [PMID: 23458423 DOI: 10.1021/la304954h] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Self-assembly of molecules into chiral macromolecular and supramolecular structures at interfaces is important in various fields, such as biomedicine, polymer sciences, material sciences, and supramolecular chemistry. However, probing the kinetics at interfaces remains challenging because it requires a real-time method that has selectivity to both interface and chirality. Here, we introduce an in situ approach of using the C-H stretch as a vibrational probe detected by chiral sum frequency generation spectroscopy (cSFG). We showed that the C-H stretch cSFG signals of an amphiphilic peptide (LK7β) can reveal the kinetics of its self-assembly into chiral β-sheet structures at the air-water interface. The cSFG experiments in conjunction with measurements of surface pressure allow us to propose a mechanism of the self-assembly process, which involves an immediate adsorption of disordered structures followed by a lag phase before the self-assembly into chiral antiparallel β-sheet structures. Our method of using the C-H stretch signals implies a general application of cSFG to study the self-assembly of bioactive, simple organic, and polymeric molecules into chiral macromolecular and supramolecular structures at interfaces, which will be useful in tackling problems, such as protein aggregation, rational design of functional materials, and fabrication of molecular devices.
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Affiliation(s)
- Zhuguang Wang
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
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40
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Zhou J, Li W, Gao C. Functionalized Nanomaterials. Regen Med 2013. [DOI: 10.1007/978-94-007-5690-8_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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41
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Stabilization of collagen-model, triple-helical peptides for in vitro and in vivo applications. Methods Mol Biol 2013; 1081:167-94. [PMID: 24014440 PMCID: PMC4260935 DOI: 10.1007/978-1-62703-652-8_11] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The triple-helical structure of collagen has been accurately reproduced in numerous chemical and recombinant model systems. Triple-helical peptides and proteins have found application for dissecting collagen-stabilizing forces, isolating receptor- and protein-binding sites in collagen, mechanistic examination of collagenolytic proteases, and development of novel biomaterials. Introduction of native-like sequences into triple-helical constructs can reduce the thermal stability of the triple-helix to below that of the physiological environment. In turn, incorporation of nonnative amino acids and/or templates can enhance triple-helix stability. We presently describe approaches by which triple-helical structure can be modulated for use under physiological or near-physiological conditions.
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42
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Mazza M, Patel A, Pons R, Bussy C, Kostarelos K. Peptide nanofibres as molecular transporters: from self-assembly to in vivo degradation. Faraday Discuss 2013; 166:181-94. [DOI: 10.1039/c3fd00100h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Matsuda M, Taguchi T. In vitro evaluation of tissue adhesives composed of hydrophobically modified gelatins and disuccinimidyl tartrate. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2012; 13:064212. [PMID: 27877539 PMCID: PMC5099772 DOI: 10.1088/1468-6996/13/6/064212] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Accepted: 10/17/2012] [Indexed: 06/06/2023]
Abstract
The effect of the hydrophobic group content in gelatin on the bonding strength of novel tissue-penetrating tissue adhesives was evaluated. The hydrophobic groups introduced into gelatin were the saturated hexanoyl, palmitoyl, and stearoyl groups, and the unsaturated oleoyl group. A collagen casing was employed as an adherend to model soft tissue for the in vitro determination of bonding strength of tissue adhesives composed of various hydrophobically modified gelatins and disuccinimidyl tartrate. The adhesive composed of stearoyl-modified gelatin (7.4% stearoyl; 10Ste) and disuccinimidyl tartrate showed the highest bonding strength. The bonding strength of the adhesives decreased as the degree of substitution of the hydrophobic groups increased. Cell culture experiments demonstrated that fluorescein isothiocyanate-labeled 10Ste was integrated onto the surface of smooth muscle cells and showed no cytotoxicity. These results suggest that 10Ste interacted with the hydrophobic domains of collagen casings, such as hydrophobic amino acid residues and cell membranes. Therefore, 10Ste-disuccinimidyl tartrate is a promising adhesive for use in aortic dissection.
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Affiliation(s)
- Miyuki Matsuda
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
- Biomaterials Unit, Nano-Bio field, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Tetsushi Taguchi
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
- Biomaterials Unit, Nano-Bio field, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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44
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Application of Collagen-Model Triple-Helical Peptide-Amphiphiles for CD44-Targeted Drug Delivery Systems. JOURNAL OF DRUG DELIVERY 2012; 2012:592602. [PMID: 23213537 PMCID: PMC3505660 DOI: 10.1155/2012/592602] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 10/03/2012] [Accepted: 10/05/2012] [Indexed: 11/26/2022]
Abstract
Cancer treatment by chemotherapy is typically accompanied by deleterious side effects, attributed to the toxic action of chemotherapeutics on proliferating cells from nontumor tissues. The cell surface proteoglycan CD44 has been recognized as a cancer stem cell marker. The present study has examined CD44 targeting as a way to selectively deliver therapeutic agents encapsulated inside colloidal delivery systems. CD44/chondroitin sulfate proteoglycan binds to a triple-helical sequence derived from type IV collagen, α1(IV)1263–1277. We have assembled a peptide-amphiphile (PA) in which α1(IV)1263–1277 was sandwiched between 4 repeats of Gly-Pro-4-hydroxyproline and conjugated to palmitic acid. The PA was incorporated into liposomes composed of DSPG, DSPC, cholesterol, and DSPE-PEG-2000 (1 : 4 : 5 : 0.5). Doxorubicin-(DOX-)loaded liposomes with and without 10% α1(IV)1263–1277 PA were found to exhibit similar stability profiles. Incubation of DOX-loaded targeted liposomes with metastatic melanoma M14#5 and M15#11 cells and BJ fibroblasts resulted in IC50 values of 9.8, 9.3, and >100 μM, respectively. Nontargeted liposomes were considerably less efficacious for M14#5 cells. In the CD44+ B16F10 mouse melanoma model, CD44-targeted liposomes reduced the tumor size to 60% of that of the untreated control, whereas nontargeted liposomes were ineffective. These results suggest that PA targeted liposomes may represent a new class of nanotechnology-based drug delivery systems.
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45
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Wilkinson BL, Day S, Chapman R, Perrier S, Apostolopoulos V, Payne RJ. Synthesis and Immunological Evaluation of Self-Assembling and Self-Adjuvanting Tricomponent Glycopeptide Cancer-Vaccine Candidates. Chemistry 2012; 18:16540-8. [DOI: 10.1002/chem.201202629] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 09/04/2012] [Indexed: 12/31/2022]
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46
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Zhang Z, Hu J, Ma PX. Nanofiber-based delivery of bioactive agents and stem cells to bone sites. Adv Drug Deliv Rev 2012; 64:1129-41. [PMID: 22579758 DOI: 10.1016/j.addr.2012.04.008] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 04/23/2012] [Accepted: 04/25/2012] [Indexed: 01/14/2023]
Abstract
Biodegradable nanofibers are important scaffolding materials for bone regeneration. In this paper, the basic concepts and recent advances of self-assembly, electrospinning and thermally induced phase separation techniques that are widely used to generate nanofibrous scaffolds are reviewed. In addition, surface functionalization and bioactive factor delivery within these nanofibrous scaffolds to enhance bone regeneration are also discussed. Moreover, recent progresses in applying these nanofiber-based scaffolds to deliver stem cells for bone regeneration are presented. Along with the significant advances, challenges and obstacles in the field as well as the future perspective are discussed.
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47
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Jun HW, Paramonov SE, Dong H, Forraz N, McGuckin C, Hartgerink JD. Tuning the mechanical and bioresponsive properties of peptide-amphiphile nanofiber networks. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 19:665-76. [DOI: 10.1163/156856208784089625] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Ho-Wook Jun
- a Department of Chemistry, Rice University, 6100 Main street, MS 60, Houston, TX 77005, USA; Department of Bioengineering, Rice University, 6100 Main street, MS 60, Houston, TX 77005, USA
| | - Sergey E. Paramonov
- b Department of Chemistry, Rice University, 6100 Main street, MS 60, Houston, TX 77005, USA; Department of Bioengineering, Rice University, 6100 Main street, MS 60, Houston, TX 77005, USA
| | - He Dong
- c Department of Chemistry, Rice University, 6100 Main street, MS 60, Houston, TX 77005, USA; Department of Bioengineering, Rice University, 6100 Main street, MS 60, Houston, TX 77005, USA
| | - Nicolas Forraz
- d School of Clinical & Laboratory Sciences, Medical School, University of Newcastle upon Tyne, UK
| | - Colin McGuckin
- e School of Clinical & Laboratory Sciences, Medical School, University of Newcastle upon Tyne, UK
| | - Jeffrey D. Hartgerink
- f Department of Chemistry, Rice University, 6100 Main street, MS 60, Houston, TX 77005, USA; Department of Bioengineering, Rice University, 6100 Main street, MS 60, Houston, TX 77005, USA
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48
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Cavalli S, Robson Marsden H, Albericio F, Kros A. Peptide Self-Assembly. Supramol Chem 2012. [DOI: 10.1002/9780470661345.smc088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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49
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Luo J, Tong YW. Self-assembly of collagen-mimetic peptide amphiphiles into biofunctional nanofiber. ACS NANO 2011; 5:7739-47. [PMID: 21899363 DOI: 10.1021/nn202822f] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Molecular assembly of protein and peptide is highly specific and frequently occurs in biological systems. Collagen, which is the most abundant component in extracellular matrix, can assemble into fiber and play an essential role in cell adhesion and growth. Since native collagen is difficult to modify and can engender pathogenic and immunological side effects, its application on tissue regeneration is limited. The preparation of collagen-mimetic materials, hence, is gaining interest in the field of tissue regeneration. Collagen peptides have been synthesized to mimic some properties of collagen, such as its triple helix. However, few studies have been done to prepare artificial collagen fiber to mimic its high-level structure and biofunctions. In this work, a novel collagen-mimetic peptide amphiphile (CPA) was prepared by conjugating a single hydrophobic tail with a collagen-mimetic peptide, supplemented with bioactive glycine-phenylalanine-hydroxyproline-glycine-glutamate-arginine (GFOGER). The physical studies indicated that the CPA had a collagen-mimetic triple-helical conformation and was able to self-assemble into nanofiber. In addition, the CPA conjugated with the integrin-specific GFOGER sequence was shown to promote collagen-mimetic cell adhesion and development. The self-assembled peptide nanofiber was shown to have the ability to structurally and biologically mimic native collagen fiber. We anticipate that this artificial collagen fiber holds great potential as collagen-mimetic materials for tissue regeneration applications.
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Affiliation(s)
- Jingnan Luo
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117576
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50
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Schofer MD, Roessler PP, Schaefer J, Theisen C, Schlimme S, Heverhagen JT, Voelker M, Dersch R, Agarwal S, Fuchs-Winkelmann S, Paletta JRJ. Electrospun PLLA nanofiber scaffolds and their use in combination with BMP-2 for reconstruction of bone defects. PLoS One 2011; 6:e25462. [PMID: 21980467 PMCID: PMC3182232 DOI: 10.1371/journal.pone.0025462] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Accepted: 09/05/2011] [Indexed: 01/14/2023] Open
Abstract
INTRODUCTION Adequate migration and differentiation of mesenchymal stem cells is essential for regeneration of large bone defects. To achieve this, modern graft materials are becoming increasingly important. Among them, electrospun nanofiber scaffolds are a promising approach, because of their high physical porosity and potential to mimic the extracellular matrix (ECM). MATERIALS AND METHODS The objective of the present study was to examine the impact of electrospun PLLA nanofiber scaffolds on bone formation in vivo, using a critical size rat calvarial defect model. In addition we analyzed whether direct incorporation of bone morphogenetic protein 2 (BMP-2) into nanofibers could enhance the osteoinductivity of the scaffolds. Two critical size calvarial defects (5 mm) were created in the parietal bones of adult male Sprague-Dawley rats. Defects were either (1) left unfilled, or treated with (2) bovine spongiosa, (3) PLLA scaffolds alone or (4) PLLA/BMP-2 scaffolds. Cranial CT-scans were taken at fixed intervals in vivo. Specimens obtained after euthanasia were processed for histology, histomorphometry and immunostaining (Osteocalcin, BMP-2 and Smad5). RESULTS PLLA scaffolds were well colonized with cells after implantation, but only showed marginal ossification. PLLA/BMP-2 scaffolds showed much better bone regeneration and several ossification foci were observed throughout the defect. PLLA/BMP-2 scaffolds also stimulated significantly faster bone regeneration during the first eight weeks compared to bovine spongiosa. However, no significant differences between these two scaffolds could be observed after twelve weeks. Expression of osteogenic marker proteins in PLLA/BMP-2 scaffolds continuously increased throughout the observation period. After twelve weeks osteocalcin, BMP-2 and Smad5 were all significantly higher in the PLLA/BMP-2 group than in all other groups. CONCLUSION Electrospun PLLA nanofibers facilitate colonization of bone defects, while their use in combination with BMP-2 also increases bone regeneration in vivo and thus combines osteoconductivity of the scaffold with the ability to maintain an adequate osteogenic stimulus.
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Affiliation(s)
- Markus D. Schofer
- Department of Orthopedics and Rheumatology, University Hospital Marburg, Marburg, Germany
| | - Philip P. Roessler
- Department of Orthopedics and Rheumatology, University Hospital Marburg, Marburg, Germany
| | - Jan Schaefer
- Department of Orthopedics and Rheumatology, University Hospital Marburg, Marburg, Germany
| | - Christina Theisen
- Department of Orthopedics and Rheumatology, University Hospital Marburg, Marburg, Germany
| | - Sonja Schlimme
- Department of Orthopedics and Rheumatology, University Hospital Marburg, Marburg, Germany
| | | | - Maximilian Voelker
- Department of Diagnostic Radiology, University Hospital Marburg, Marburg, Germany
| | - Roland Dersch
- Department of Macromolecular Chemistry, Philipps-University Marburg, Marburg, Germany
| | - Seema Agarwal
- Department of Macromolecular Chemistry, Philipps-University Marburg, Marburg, Germany
| | | | - Jürgen R. J. Paletta
- Department of Orthopedics and Rheumatology, University Hospital Marburg, Marburg, Germany
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