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Creyer MN, Retout M, Jin Z, Yim W, Jokerst JV. Ligation of Gold Nanoparticles with Self-Assembling, Coiled-Coil Peptides. J Phys Chem B 2023; 127:8009-8018. [PMID: 37683185 DOI: 10.1021/acs.jpcb.3c02099] [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] [Indexed: 09/10/2023]
Abstract
The surface of gold nanoparticles (AuNPs) can be conjugated with a wide range of highly functional biomolecules. A common pitfall when utilizing AuNPs is their tendency to aggregate, especially when their surface is functionalized with ligands of low molecular weight (no steric repulsion) or ligands of neutral charge (no electrostatic repulsion). For biomedical applications, AuNPs that are colloidally stable are desirable because they have a high surface area and thus reactivity, resist sedimentation, and exhibit uniform optical properties. Here, we engineer the surface of AuNPs so that they remain stable when decorated with coiled-coil (CC) peptides while preserving the native polypeptide properties. We achieve this by using a neutral, mixed ligand layer composed of lipoic acid poly(ethylene glycol) and lipoic acid poly(ethylene glycol) maleimide to attach the CCs. Tuning the surface fraction of each component within the mixed ligand layer also allowed us to control the degree of AuNP labeling with CCs. We demonstrate the dynamic surface properties of these CC-AuNPs by performing a place-exchange reaction and their utility by designing an energy-transfer-based caspase-3 sensor. Overall, this study optimizes the surface chemistry of AuNPs to quantitatively present functional biomolecules while maintaining colloid stability.
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Affiliation(s)
- Matthew N Creyer
- Department of Nano and Chemical Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Maurice Retout
- Department of Nano and Chemical Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Zhicheng Jin
- Department of Nano and Chemical Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Wonjun Yim
- Materials Science and Engineering Program, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Jesse V Jokerst
- Department of Nano and Chemical Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
- Materials Science and Engineering Program, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
- Department of Radiology, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
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2
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Dégardin M, Gaudreault J, Oliverio R, Serafin B, Forest-Nault C, Liberelle B, De Crescenzo G. Grafting Strategies of Oxidation-Prone Coiled-Coil Peptides for Protein Capture in Bioassays: Impact of Orientation and the Oxidation State. ACS OMEGA 2023; 8:28301-28313. [PMID: 37576632 PMCID: PMC10413464 DOI: 10.1021/acsomega.3c02172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 07/14/2023] [Indexed: 08/15/2023]
Abstract
Many biomedical and biosensing applications require functionalization of surfaces with proteins. To this end, the E/K coiled-coil peptide heterodimeric system has been shown to be advantageous. First, Kcoil peptides are covalently grafted onto a given surface. Ecoil-tagged proteins can then be non-covalently captured via a specific interaction with their Kcoil partners. Previously, oriented Kcoil grafting was achieved via thiol coupling, using a unique Kcoil with a terminal cysteine residue. However, cysteine-terminated Kcoil peptides are hard to produce, purify, and oxidize during storage. Indeed, they tend to homodimerize and form disulfide bonds via oxidation of their terminal thiol group, making it impossible to later graft them on thiol-reactive surfaces. Kcoil peptides also contain multiple free amine groups, available for covalent coupling through carbodiimide chemistry. Grafting Kcoil peptides on surfaces via amine coupling would thus guarantee their immobilization regardless of their terminal cysteine's oxidation state, at the expense of the control over their orientation. In this work, we compare Kcoil grafting strategies for the subsequent capture of Ecoil-tagged proteins, for applications such as surface plasmon resonance (SPR) biosensing and cell culture onto protein-decorated substrates. We compare the "classic" thiol coupling of cysteine-terminated Kcoil peptides to the amine coupling of (i) monomeric Kcoil and (ii) dimeric Kcoil-Kcoil linked by a disulfide bond. We have observed that SPR biosensing performances relying on captured Ecoil-tagged proteins were similar for amine-coupled dimeric Kcoil-Kcoil and thiol-coupled Kcoil peptides, at the expense of higher Ecoil-tagged protein consumption. For cell culture applications, Ecoil-tagged growth factors captured on amine-coupled monomeric Kcoil signaled through cell receptors similarly to those captured on thiol-coupled Kcoil peptides. Altogether, while oriented thiol coupling of cysteine-terminated Kcoil peptides remains the most reliable and versatile platform for Ecoil-tagged protein capture, amine coupling of Kcoil peptides, either monomeric or dimerized through a cysteine bond, can offer a good alternative when the challenges and costs associated with the production of monomeric cysteine-tagged Kcoil are too dissuasive for the application.
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Affiliation(s)
- Médéric Dégardin
- Department of Chemical Engineering, Polytechnique Montréal, Montréal H3T 1J4, Québec, Canada
| | - Jimmy Gaudreault
- Department of Chemical Engineering, Polytechnique Montréal, Montréal H3T 1J4, Québec, Canada
| | - Romane Oliverio
- Department of Chemical Engineering, Polytechnique Montréal, Montréal H3T 1J4, Québec, Canada
| | - Benjamin Serafin
- Department of Chemical Engineering, Polytechnique Montréal, Montréal H3T 1J4, Québec, Canada
| | - Catherine Forest-Nault
- Department of Chemical Engineering, Polytechnique Montréal, Montréal H3T 1J4, Québec, Canada
| | - Benoit Liberelle
- Department of Chemical Engineering, Polytechnique Montréal, Montréal H3T 1J4, Québec, Canada
| | - Gregory De Crescenzo
- Department of Chemical Engineering, Polytechnique Montréal, Montréal H3T 1J4, Québec, Canada
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Oliverio R, Patenaude V, Liberelle B, Virgilio N, Banquy X, De Crescenzo G. Macroporous dextran hydrogels for controlled growth factor capture and delivery using coiled-coil interactions. Acta Biomater 2022; 153:190-203. [PMID: 36113720 DOI: 10.1016/j.actbio.2022.09.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/24/2022] [Accepted: 09/08/2022] [Indexed: 11/01/2022]
Abstract
Macroporous hydrogels possess a vast potential for various applications in the biomedical field. However, due to their large pore size allowing for unrestricted diffusion in the macropore network, macroporous hydrogels alone are not able to efficiently capture and release biomolecules in a controlled manner. There is thus a need for biofunctionalized, affinity-based gels that can efficiently load and release biomolecules in a sustained and controlled manner. For this purpose, we report here the use of a E/K coiled-coil affinity pair for the controlled capture and delivery of growth factors from highly interconnected, macroporous dextran hydrogels. By conjugating the Kcoil peptide to the dextran backbone, we achieved controlled loading and release of Ecoil-tagged Epidermal and Vascular Endothelial Growth Factors. To finely tune the behavior of the gels, we propose four control parameters: (i) macropore size, (ii) Kcoil grafting density, (iii) Ecoil valency and (iv) E/K affinity. We demonstrate that Kcoil grafting can produce a 20-fold increase in passive growth factor capture by macroporous dextran gels. Furthermore, we demonstrate that our gels can release as little as 20% of the loaded growth factors over one week, while retaining bioactivity. Altogether, we propose a versatile, highly tunable platform for the controlled delivery of growth factors in biomedical applications. STATEMENT OF SIGNIFICANCE: This work presents a highly tunable platform for growth factor capture and sustained delivery using affinity peptides in macroporous, fully interconnected dextran hydrogels. It addresses several ongoing challenges by presenting: (i) a versatile platform for the delivery of a wide range of stable, bioactive molecules, (ii) a passive, affinity-based loading of growth factors in the platform, paving the way for in situ (re)loading of the device and (iii) four different control parameters to finely tune growth factor capture and release. Altogether, our macroporous dextran hydrogels have a vast potential for applications in controlled delivery, tissue engineering and regenerative medicine.
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Affiliation(s)
- Romane Oliverio
- Department of Chemical Engineering, Polytechnique Montréal, Montréal, Québec H3T 1J4, Canada; Faculty of Pharmacy, Axe Formulation et Analyse du Médicament (AFAM), Université de Montréal, Montréal, Québec H3T 1J4, Canada
| | - Victor Patenaude
- Department of Chemical Engineering, Polytechnique Montréal, Montréal, Québec H3T 1J4, Canada
| | - Benoît Liberelle
- Department of Chemical Engineering, Polytechnique Montréal, Montréal, Québec H3T 1J4, Canada
| | - Nick Virgilio
- Department of Chemical Engineering, Centre de Recherche sur les Systèmes Polymères et Composites à Haute Performance (CREPEC), Polytechnique Montréal, Montréal, Québec H3T 1J4, Canada
| | - Xavier Banquy
- Faculty of Pharmacy, Axe Formulation et Analyse du Médicament (AFAM), Université de Montréal, Montréal, Québec H3T 1J4, Canada
| | - Gregory De Crescenzo
- Department of Chemical Engineering, Polytechnique Montréal, Montréal, Québec H3T 1J4, Canada.
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Utterström J, Naeimipour S, Selegård R, Aili D. Coiled coil-based therapeutics and drug delivery systems. Adv Drug Deliv Rev 2021; 170:26-43. [PMID: 33378707 DOI: 10.1016/j.addr.2020.12.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/18/2020] [Accepted: 12/20/2020] [Indexed: 12/20/2022]
Abstract
Coiled coils are characterized by an arrangement of two or more α-helices into a superhelix and one of few protein motifs where the sequence-to-structure relationship to a large extent have been decoded and understood. The abundance of both natural and de novo designed coil coils provides a rich molecular toolbox for self-assembly of elaborate bespoke molecular architectures, nanostructures, and materials. Leveraging on the numerous possibilities to tune both affinities and preferences for polypeptide oligomerization, coiled coils offer unique possibilities to design modular and dynamic assemblies that can respond in a predictable manner to biomolecular interactions and subtle physicochemical cues. In this review, strategies to use coiled coils in design of novel therapeutics and advanced drug delivery systems are discussed. The applications of coiled coils for generating drug carriers and vaccines, and various aspects of using coiled coils for controlling and triggering drug release, and for improving drug targeting and drug uptake are described. The plethora of innovative coiled coil-based molecular systems provide new knowledge and techniques for improving efficacy of existing drugs and can facilitate development of novel therapeutic strategies.
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Cambay F, Henry O, Durocher Y, De Crescenzo G. Impact of N-glycosylation on Fcγ receptor / IgG interactions: unravelling differences with an enhanced surface plasmon resonance biosensor assay based on coiled-coil interactions. MAbs 2019; 11:435-452. [PMID: 30822189 DOI: 10.1080/19420862.2019.1581017] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The N-glycosylation profile of immunoglobulin G (IgG) is considered a critical quality attribute due to its impact on IgG-Fc gamma receptor (FcγR) interactions, which subsequently affect antibody-dependent cell-based immune responses. In this study, we investigated the impact of the FcγR capture method, as well as FcγR N-glycosylation, on the kinetics of interaction with various glycoforms of trastuzumab (TZM) in a surface plasmon resonance (SPR) biosensor assay. More specifically, we developed a novel strategy based on coiled-coil interactions for the stable and oriented capture of coil-tagged FcγRs at the biosensor surface. Coil-tagged FcγR capture outperformed all other capture strategies applied to the SPR study of IgG-FcγR interactions, as the robustness and reproducibility of the assay and the shelf life of the biosensor chip were excellent (> 1,000 IgG injections with the same biosensor surface). Coil-tagged FcγRs displaying different N-glycosylation profiles were generated either by different expression systems, in vitro glycoengineering or by size-exclusion chromatography, and roughly characterized by lectin blotting. Of salient interest, the overlay of their kinetics of interaction with several TZM glycoforms revealed key differences on both association and dissociation kinetics, confirming a complex influence of the FcγR N-glycosylation and its inherent heterogeneity upon receptor interaction with mAbs. This work is thus an important step towards better understanding of the impact of glycosylation upon binding of IgGs, either natural or engineered, to their receptors.
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Affiliation(s)
- Florian Cambay
- a Department of Chemical Engineering , Polytechnique Montréal , Montréal , Québec , Canada.,b Human Health Therapeutics Research Center , National Research Council Canada , Montréal , Québec , Canada
| | - Olivier Henry
- a Department of Chemical Engineering , Polytechnique Montréal , Montréal , Québec , Canada
| | - Yves Durocher
- b Human Health Therapeutics Research Center , National Research Council Canada , Montréal , Québec , Canada.,c Département de Biochimie et Médecine Moléculaire , Université de Montréal , Montréal , Québec , Canada
| | - Gregory De Crescenzo
- a Department of Chemical Engineering , Polytechnique Montréal , Montréal , Québec , Canada
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Bofinger R, Zaw‐Thin M, Mitchell NJ, Patrick PS, Stowe C, Gomez‐Ramirez A, Hailes HC, Kalber TL, Tabor AB. Development of lipopolyplexes for gene delivery: A comparison of the effects of differing modes of targeting peptide display on the structure and transfection activities of lipopolyplexes. J Pept Sci 2018; 24:e3131. [PMID: 30325562 PMCID: PMC6282963 DOI: 10.1002/psc.3131] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 09/06/2018] [Accepted: 09/14/2018] [Indexed: 12/12/2022]
Abstract
The design, synthesis and formulation of non-viral gene delivery vectors is an area of renewed research interest. Amongst the most efficient non-viral gene delivery systems are lipopolyplexes, in which cationic peptides are co-formulated with plasmid DNA and lipids. One advantage of lipopolyplex vectors is that they have the potential to be targeted to specific cell types by attaching peptide targeting ligands on the surface, thus increasing both the transfection efficiency and selectivity for disease targets such as cancer cells. In this paper, we have investigated two different modes of displaying cell-specific peptide targeting ligands at the surface of lipopolyplexes. Lipopolyplexes formulated with bimodal peptides, with both receptor binding and DNA condensing sequences, were compared with lipopolyplexes with the peptide targeting ligand directly conjugated to one of the lipids. Three EGFR targeting peptide sequences were studied, together with a range of lipid formulations and maleimide lipid structures. The biophysical properties of the lipopolyplexes and their transfection efficiencies in a basal-like breast cancer cell line were investigated using plasmid DNA bearing genes for the expression of firefly luciferase and green fluorescent protein. Fluorescence quenching experiments were also used to probe the macromolecular organisation of the peptide and pDNA components of the lipopolyplexes. We demonstrated that both approaches to lipopolyplex targeting give reasonable transfection efficiencies, and the transfection efficiency of each lipopolyplex formulation is highly dependent on the sequence of the targeting peptide. To achieve maximum therapeutic efficiency, different peptide targeting sequences and lipopolyplex architectures should be investigated for each target cell type.
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Affiliation(s)
- Robin Bofinger
- Department of ChemistryUniversity College London20, Gordon StreetLondonWC1H 0AJUK
| | - May Zaw‐Thin
- UCL Centre for Advanced Biomedical Imaging, Division of MedicineUniversity College LondonLondonWC1E 6DDUK
| | - Nicholas J. Mitchell
- Department of ChemistryUniversity College London20, Gordon StreetLondonWC1H 0AJUK
| | - P. Stephen Patrick
- UCL Centre for Advanced Biomedical Imaging, Division of MedicineUniversity College LondonLondonWC1E 6DDUK
| | - Cassandra Stowe
- UCL Centre for Advanced Biomedical Imaging, Division of MedicineUniversity College LondonLondonWC1E 6DDUK
| | - Ana Gomez‐Ramirez
- UCL Centre for Advanced Biomedical Imaging, Division of MedicineUniversity College LondonLondonWC1E 6DDUK
| | - Helen C. Hailes
- Department of ChemistryUniversity College London20, Gordon StreetLondonWC1H 0AJUK
| | - Tammy L. Kalber
- UCL Centre for Advanced Biomedical Imaging, Division of MedicineUniversity College LondonLondonWC1E 6DDUK
| | - Alethea B. Tabor
- Department of ChemistryUniversity College London20, Gordon StreetLondonWC1H 0AJUK
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7
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Tallec G, Loh C, Liberelle B, Garcia-Ac A, Duy SV, Sauvé S, Banquy X, Murschel F, De Crescenzo G. Adequate Reducing Conditions Enable Conjugation of Oxidized Peptides to Polymers by One-Pot Thiol Click Chemistry. Bioconjug Chem 2018; 29:3866-3876. [PMID: 30350572 DOI: 10.1021/acs.bioconjchem.8b00684] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Thiol(-click) chemistry has been extensively investigated to conjugate (bio)molecules to polymers. Handling of cysteine-containing molecules may however be cumbersome, especially in the case of fast-oxidizing coiled-coil-forming peptides. In the present study, we investigated the practicality of a one-pot process to concomitantly reduce and conjugate an oxidized peptide to a polymer. Three thiol-based conjugation chemistries (vinyl sulfone (VS), maleimide, and pyridyldithiol) were assayed along with three reducing agents (tris(2-carboxyethyl)phosphine (TCEP), dithiothreitol, and β-mercaptoethanol). Seven out of the nine possible combinations significantly enhanced the conjugation yield, provided that an adequate concentration of reductant was used. Among them, the coincubation of an oxidized peptide with TCEP and a VS-modified polymer displayed the highest level of conjugation. Our results also provide insights into two topics that currently lack consensus: TCEP is stable in 10 mM phosphate buffered saline and it reacts with thiol-alkylating agents at submillimolar concentrations, and thus should be carefully used in order to avoid interference with thiol-based conjugation reactions.
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Affiliation(s)
- Gwendoline Tallec
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologies Biomédicales (GRSTB), Bio-P2 Research Unit , École Polytechnique de Montréal , P.O. Box 6079, succ. Centre-Ville, Montréal , Quebec , Canada H3C 3A7
| | - Celestine Loh
- Division of Chemical and Biomolecular Engineering , Nanyang Technological University , 50 Nanyang Avenue , Singapore , Singapore , 639798
| | - Benoit Liberelle
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologies Biomédicales (GRSTB), Bio-P2 Research Unit , École Polytechnique de Montréal , P.O. Box 6079, succ. Centre-Ville, Montréal , Quebec , Canada H3C 3A7
| | - Araceli Garcia-Ac
- Faculty of Pharmacy , Université de Montréal , 2900 Edouard-Montpetit Boulevard , Montreal , Quebec , Canada H3C 3J7
| | - Sung Vo Duy
- Department of Chemistry , Université de Montréal , C.P. 6128, succ. Centre-Ville, Montreal , Quebec , Canada H3C 3J7
| | - Sébastien Sauvé
- Department of Chemistry , Université de Montréal , C.P. 6128, succ. Centre-Ville, Montreal , Quebec , Canada H3C 3J7
| | - Xavier Banquy
- Faculty of Pharmacy , Université de Montréal , 2900 Edouard-Montpetit Boulevard , Montreal , Quebec , Canada H3C 3J7
| | - Frederic Murschel
- Faculty of Pharmacy , Université de Montréal , 2900 Edouard-Montpetit Boulevard , Montreal , Quebec , Canada H3C 3J7
| | - Gregory De Crescenzo
- Department of Chemical Engineering, Groupe de Recherche en Sciences et Technologies Biomédicales (GRSTB), Bio-P2 Research Unit , École Polytechnique de Montréal , P.O. Box 6079, succ. Centre-Ville, Montréal , Quebec , Canada H3C 3A7
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Deci MB, Liu M, Dinh QT, Nguyen J. Precision engineering of targeted nanocarriers. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2018; 10:e1511. [PMID: 29436157 DOI: 10.1002/wnan.1511] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/11/2017] [Accepted: 01/16/2018] [Indexed: 12/15/2022]
Abstract
Since their introduction in 1980, the number of advanced targeted nanocarrier systems has grown considerably. Nanocarriers capable of targeting single receptors, multiple receptors, or multiple epitopes have all been used to enhance delivery efficiency and selectivity. Despite tremendous progress, preclinical studies and clinically translatable nanotechnology remain disconnected. The disconnect in targeting efficacy may stem from poorly-understood factors such as receptor clustering, spatial control of targeting ligands, ligand mobility, and ligand architecture. Further, the relationship between receptor distribution and ligand architecture remains elusive. Traditionally, targeted nanocarriers were engineered assuming a "static" target. However, it is becoming increasingly clear that receptor expression patterns change in response to external stimuli and disease progression. Here, we discuss how cutting-edge technologies will enable a better characterization of the spatiotemporal distribution of membrane receptors and their clustering. We further describe how this will enable the design of new nanocarriers that selectively target the site of disease. Ultimately, we explore how the precision engineering of targeted nanocarriers that adapt to receptor dynamics will have the potential to drive nanotechnology to the forefront of therapy and make targeted nanomedicine a clinical reality. This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies Nanotechnology Approaches to Biology > Nanoscale Systems in Biology Biology-Inspired Nanomaterials > Lipid-Based Structures Biology-Inspired Nanomaterials > Protein and Virus-Based Structures.
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Affiliation(s)
- Michael B Deci
- Department of Pharmaceutical Sciences, School of Pharmacy, University at Buffalo, The State University of New York, Buffalo, New York
| | - Maixian Liu
- Department of Pharmaceutical Sciences, School of Pharmacy, University at Buffalo, The State University of New York, Buffalo, New York
| | - Quoc Thai Dinh
- Department of Experimental Pneumology and Allergology, Saarland University Faculty of Medicine, Homburg/Saar, Germany
| | - Juliane Nguyen
- Department of Pharmaceutical Sciences, School of Pharmacy, University at Buffalo, The State University of New York, Buffalo, New York
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9
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Bioavailability of immobilized epidermal growth factor: Covalent versus noncovalent grafting. Biointerphases 2017; 12:010501. [PMID: 28325051 DOI: 10.1116/1.4978871] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In an effort to rationalize and optimize an antiapoptotic coating combining chondroitin sulfate (CS) and epidermal growth factor (EGF) for vascular applications, the authors here report the comparison of two grafting strategies aiming to display EGF in an oriented fashion on CS. For that purpose, the authors produced, purified, and characterized a chimeric protein corresponding to EGF that was N-terminally fused to a cysteine and a coil peptide. The chimera was covalently immobilized via its free thiol group or captured via coiled-coil interactions at the surface of a biosensor or on a chondroitin sulfate coating in multiwell plates, mimicking the coating that was previously developed by them for stent-graft surfaces. The interactions of grafted EGF with the soluble domain of its receptor or the impact of grafted EGF upon vascular smooth muscle survival in proapoptotic conditions indicated that the coiled-coil based tethering was the best approach to display EGF. These results, combined to direct enzyme-linked immunosorbent assay measurements, indicated that the coiled-coil tethering approach allowed increasing the amount of bioavailable EGF when compared to covalent coupling, rather than the total amount of grafted EGF, while using much lower concentrations of tagged EGF during incubation.
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10
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Murschel F, Fortier C, Jolicoeur M, Hodges RS, De Crescenzo G. Two Complementary Approaches for the Controlled Release of Biomolecules Immobilized via Coiled-Coil Interactions: Peptide Core Mutations and Multivalent Presentation. Biomacromolecules 2017; 18:965-975. [DOI: 10.1021/acs.biomac.6b01830] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Frederic Murschel
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succursale Centre-Ville, Montréal, Quebec H3C 3A7, Canada
| | - Charles Fortier
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succursale Centre-Ville, Montréal, Quebec H3C 3A7, Canada
| | - Mario Jolicoeur
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succursale Centre-Ville, Montréal, Quebec H3C 3A7, Canada
| | - Robert S. Hodges
- Department
of Biochemistry and Molecular Genetics, University of Colorado, School of Medicine, Anschutz Medical Campus, Aurora, Colorado 80045, United States
| | - Gregory De Crescenzo
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), Bio-P2 Research Unit, École Polytechnique de Montréal, P.O. Box 6079, succursale Centre-Ville, Montréal, Quebec H3C 3A7, Canada
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11
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Oude Blenke EE, van den Dikkenberg J, van Kolck B, Kros A, Mastrobattista E. Coiled coil interactions for the targeting of liposomes for nucleic acid delivery. NANOSCALE 2016; 8:8955-65. [PMID: 27073992 DOI: 10.1039/c6nr00711b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Coiled coil interactions are strong protein-protein interactions that are involved in many biological processes, including intracellular trafficking and membrane fusion. A synthetic heterodimeric coiled-coil forming peptide pair, known as E3 (EIAALEK)3 and K3 (KIAALKE)3 was used to functionalize liposomes encapsulating a splice correcting oligonucleotide or siRNA. These peptide-functionalized vesicles are highly stable in solution but start to cluster when vesicles modified with complementary peptides are mixed together, demonstrating that the peptides quickly coil and crosslink the vesicles. When one of the peptides was anchored to the cell membrane using a hydrophobic cholesterol anchor, vesicles functionalized with the complementary peptide could be docked to these cells, whereas non-functionalized cells did not show any vesicle tethering. Although the anchored peptides do not have a downstream signaling pathway, microscopy pictures revealed that after four hours, the majority of the docked vesicles were internalized by endocytosis. Finally, for the first time, it was shown that the coiled coil assembly at the interface between the vesicles and the cell membrane induces active uptake and leads to cytosolic delivery of the nucleic acid cargo. Both the siRNA and the splice correcting oligonucleotide were functionally delivered, resulting respectively in the silencing or recovery of luciferase expression in the appropriate cell lines. These results demonstrate that the docking to the cell by coiled coil interaction can induce active uptake and achieve the successful intracellular delivery of otherwise membrane impermeable nucleic acids in a highly specific manner.
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Affiliation(s)
- Erik E Oude Blenke
- Department of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences (UIPS), Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands.
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12
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Soluble expression, purification and functional characterization of a coil peptide composed of a positively charged and hydrophobic motif. Amino Acids 2015; 48:567-77. [PMID: 26459292 DOI: 10.1007/s00726-015-2113-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 10/05/2015] [Indexed: 10/22/2022]
Abstract
A de novo heterodimeric coiled-coil system formed by the association of two synthetic peptides, the Ecoil and Kcoil, has been previously designed and proven to be an excellent and versatile tool for various biotechnology applications. However, based on the challenges encountered during its chemical synthesis, the Kcoil peptide has been designated as a "difficult peptide". In this study, we explore the expression of the Kcoil peptide by a bacterial system as well as its subsequent purification. The maximum expression level was observed when the peptide was fused to thioredoxin and the optimized purification process consisted of three chromatographic steps: immobilized-metal affinity chromatography followed by cation-exchange chromatography and, finally, a reverse-phase high-performance liquid chromatography. This entire process led to a final volumetric production yield of 1.5 mg of pure Kcoil peptide per liter of bacterial culture, which represents a significant step towards the cost-effective production and application of coiled-coil motifs. Our results thus demonstrate for the first time that bacterial production is a viable alternative to the chemical synthesis of de novo designed coil peptides.
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Fu J, Guerette PA, Miserez A. Self-Assembly of Recombinant Hagfish Thread Keratins Amenable to a Strain-Induced α-Helix to β-Sheet Transition. Biomacromolecules 2015; 16:2327-39. [PMID: 26102237 DOI: 10.1021/acs.biomac.5b00552] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hagfish slime threads are assembled from protein-based bundles of intermediate filaments (IFs) that undergo a strain-induced α-helical coiled-coil to β-sheet transition. Draw processing of native fibers enables the creation of mechanically tuned materials, and under optimized conditions this process results in mechanical properties similar to spider dragline silk. In this study, we develop the foundation for the engineering of biomimetic recombinant hagfish thread keratin (TK)-based materials. The two protein constituents from the hagfish Eptatretus stoutii thread, named EsTKα and EsTKγ, were expressed in Escherichia coli and purified. Individual (rec)EsTKs and mixtures thereof were subjected to stepwise dialysis to evaluate their protein solubility, folding, and self-assembly propensities. Conditions were identified that resulted in the self-assembly of coiled-coil rich IF-like filaments, as determined by circular dichroism (CD) and transmission electron microscopy (TEM). Rheology experiments indicated that the concentrated filaments assembled into gel-like networks exhibiting a rheological response reminiscent to that of IFs. Notably, the self-assembled filaments underwent an α-helical coiled-coil to β-sheet transition when subjected to oscillatory shear, thus mimicking the critical characteristic responsible for mechanical strengthening of native hagfish threads. We propose that our data establish the foundation to create robust and tunable recombinant TK-based materials whose mechanical properties are controlled by a strain-induced α-helical coiled-coil to β-sheet transition.
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Affiliation(s)
- Jing Fu
- †School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Paul A Guerette
- †School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798.,‡Energy Research Institute at Nanyang Technological University (ERI@N), 50 Nanyang Drive, Singapore, 637553
| | - Ali Miserez
- †School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798.,§School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive Singapore 637551
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Fortier C, Louvier E, Durocher Y, De Crescenzo G. Tailoring the Surface of a Gene Delivery Vector with Carboxymethylated Dextran: A Systematic Analysis. Biomacromolecules 2015; 16:1671-81. [DOI: 10.1021/acs.biomac.5b00221] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Charles Fortier
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), École Polytechnique de Montréal, P.O.
Box 6079, succ. Centre-Ville, Montreal (QC), Canada H3C 3A7
- Life Sciences
- NRC Human Health Therapeutics Portfolio, Building Montreal-Royalmount,
National Research Council Canada, Montreal (QC), Canada H4P 2R2
| | - Elodie Louvier
- Life Sciences
- NRC Human Health Therapeutics Portfolio, Building Montreal-Royalmount,
National Research Council Canada, Montreal (QC), Canada H4P 2R2
- Département
de Biochimie et Médecine Moléculaire, Université de Montréal, Montréal (QC), Canada H3C 3J7
| | - Yves Durocher
- Life Sciences
- NRC Human Health Therapeutics Portfolio, Building Montreal-Royalmount,
National Research Council Canada, Montreal (QC), Canada H4P 2R2
- Département
de Biochimie et Médecine Moléculaire, Université de Montréal, Montréal (QC), Canada H3C 3J7
| | - Gregory De Crescenzo
- Department
of Chemical Engineering, Groupe de Recherche en Sciences et Technologies
Biomédicales (GRSTB), École Polytechnique de Montréal, P.O.
Box 6079, succ. Centre-Ville, Montreal (QC), Canada H3C 3A7
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Fortier C, Durocher Y, De Crescenzo G. Surface modification of nonviral nanocarriers for enhanced gene delivery. Nanomedicine (Lond) 2014; 9:135-51. [PMID: 24354815 DOI: 10.2217/nnm.13.194] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Biomedical nanotechnology has given a new lease of life to gene therapy with the ever-developing and ever-diversifying nonviral gene delivery nanocarriers. These are designed to pass a series of barriers in order to bring their nucleic acid cargo to the right subcellular location of particular cells. For a given application, each barrier has its dedicated strategy, which translates into a physicochemical, biological and temporal identity of the nanocarrier surface. Different strategies have thus been explored to implement adequate surface identities on nanocarriers over time for systemic delivery. In that context, this review will mainly focus on organic nanocarriers, for which these strategies will be described and discussed.
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Affiliation(s)
- Charles Fortier
- Life Sciences NRC Human Health Therapeutics Portfolio, Building Montréal-Royalmount, National Research Council Canada, Montréal, QC, H4P 2R2, Canada
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Han S, Wan H, Lin D, Guo S, Dong H, Zhang J, Deng L, Liu R, Tang H, Dong A. Contribution of hydrophobic/hydrophilic modification on cationic chains of poly(ε-caprolactone)-graft-poly(dimethylamino ethylmethacrylate) amphiphilic co-polymer in gene delivery. Acta Biomater 2014; 10:670-9. [PMID: 24096149 DOI: 10.1016/j.actbio.2013.09.035] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2013] [Revised: 09/11/2013] [Accepted: 09/25/2013] [Indexed: 12/23/2022]
Abstract
Nanoparticles (NPs) assembled from amphiphilic polycations have been certified as potential carriers for gene delivery. Structural modification of polycation moieties may be an efficient route to further enhance gene delivery efficiency. In this study two electroneutral monomers with different hydrophobicities, 2-hydroxyethyl methacrylate (HEMA) and 2-hydroxyethyl acrylate (HEA), were incorporated into the cationic poly(dimethylamino ethyl methacrylate) (PDMAEMA) side-chains of amphiphilic poly(ε-caprolactone)-graft-poly(dimethylamino ethylmethacrylate) (PCD) by random co-polymerization, to obtain poly(ε-caprolactone)-graft-poly(dimethylamino ethyl methacrylate-co-2-hydroxyethyl methacrylate) (PCD-HEMA) and poly(ε-caprolactone)-graft-poly(dimethylamino ethyl methacrylate-co-2-hydroxyethyl acrylate) (PCD-HEA). Minimal HEA or HEMA moieties in PDMAEMA do not lead to statistically significant changes in particle size, zeta potential, DNA condensation properties and buffering capacity of the naked NPs. However, the incorporation of HEMA and HEA lead to reductions and increases, respectively, in the surface hydrophilicity of the naked NPs and NPs/DNA complexes, which was confirmed by water contact angle assay. These simple modifications of PDMAEMA with HEA and HEMA moieties significantly affect the gene transfection efficiency on HeLa cells in vitro: PCD-HEMA NP/DNA complexes show a much higher transfection efficiency than PCD NPs/DNA complexes, while PCD-HEA NPs/DNA complexes show a lower transfection efficiency than PCD NP/DNA complexes. Fluorescence activated cell sorter and confocal laser scanning microscope results indicate that the incorporation of hydrophobic HEMA moieties facilitates an enhancement in both cellular uptake and endosomal/lysosomal escape, leading to a higher transfection efficiency. Moreover, the process of endosomal/lysosomal escape confirmed in our research that PCD and its derivatives do not just rely on the proton sponge mechanism, but also on membrane damage due to the polycation chains, especially hydrophobic modified ones. Hence, it is proved that hydrophobic modification of cationic side-chains is a crucial route to improve gene transfection mediated by polycation NPs.
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Guerette PA, Z. Tay G, Hoon S, Loke JJ, Hermawan AF, Schmitt CNZ, Harrington MJ, Masic A, Karunaratne A, Gupta HS, Tan KS, Schwaighofer A, Nowak C, Miserez A. Integrative and comparative analysis of coiled-coil based marine snail egg cases – a model for biomimetic elastomers. Biomater Sci 2014; 2:710-722. [DOI: 10.1039/c3bm60264h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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