1
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Xing H, Wigham C, Lee SR, Pereira AJ, de Campos LJ, Picco AS, Huck-Iriart C, Escudero C, Perez-Chirinos L, Gajaweera S, Comer J, Sasselli IR, Stupp SI, Zha RH, Conda-Sheridan M. Enhanced Hydrogen Bonding by Urea Functionalization Tunes the Stability and Biological Properties of Peptide Amphiphiles. Biomacromolecules 2024; 25:2823-2837. [PMID: 38602228 DOI: 10.1021/acs.biomac.3c01463] [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: 04/12/2024]
Abstract
Self-assembled nanostructures such as those formed by peptide amphiphiles (PAs) are of great interest in biological and pharmacological applications. Herein, a simple and widely applicable chemical modification, a urea motif, was included in the PA's molecular structure to stabilize the nanostructures by virtue of intermolecular hydrogen bonds. Since the amino acid residue nearest to the lipid tail is the most relevant for stability, we decided to include the urea modification at that position. We prepared four groups of molecules (13 PAs in all), with varying levels of intermolecular cohesion, using amino acids with distinct β-sheet promoting potential and/or containing hydrophobic tails of distinct lengths. Each subset contained one urea-modified PA and nonmodified PAs, all with the same peptide sequence. The varied responses of these PAs to variations in pH, temperature, counterions, and biologically related proteins were examined using microscopic, X-ray, spectrometric techniques, and molecular simulations. We found that the urea group contributes to the stabilization of the morphology and internal arrangement of the assemblies against environmental stimuli for all peptide sequences. In addition, microbiological and biological studies were performed with the cationic PAs. These assays reveal that the addition of urea linkages affects the PA-cell membrane interaction, showing the potential to increase the selectivity toward bacteria. Our data indicate that the urea motif can be used to tune the stability of a wide range of PA nanostructures, allowing flexibility on the biomaterial's design and opening a myriad of options for clinical therapies.
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Affiliation(s)
- Huihua Xing
- College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Caleb Wigham
- Department of Chemical & Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Sieun Ruth Lee
- Department of Materials Science & Engineering, Chemistry, Biomedical Engineering, Medicine, and Simpson Querrey Institute, Northwestern University, Evanston, Illinois 60208, United States
| | - Aramis J Pereira
- College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Luana J de Campos
- College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Agustín S Picco
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas, INIFTA-CONICET-UNLP, La Plata 1900, Argentina
| | - Cristián Huck-Iriart
- ALBA Synchrotron Light Source, Experiments Division, 08290 Cerdanyola del Vallès, Spain
| | - Carlos Escudero
- ALBA Synchrotron Light Source, Experiments Division, 08290 Cerdanyola del Vallès, Spain
| | - Laura Perez-Chirinos
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Donostia 20014, San Sebastián, Spain
| | - Sandun Gajaweera
- Department of Anatomy and Physiology, Kansas State University, Manhattan, Kansas 66506, United States
| | - Jeffrey Comer
- Department of Anatomy and Physiology, Kansas State University, Manhattan, Kansas 66506, United States
| | - Ivan R Sasselli
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Donostia 20014, San Sebastián, Spain
- Centro de Fisica de Materiales (CFM), CSIC-UPV/EHU, Donostia 20018, San Sebastián, Spain
| | - Samuel I Stupp
- Department of Materials Science & Engineering, Chemistry, Biomedical Engineering, Medicine, and Simpson Querrey Institute, Northwestern University, Evanston, Illinois 60208, United States
| | - R Helen Zha
- Department of Chemical & Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Martin Conda-Sheridan
- College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
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2
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Pilz M, Cavelius P, Qoura F, Awad D, Brück T. Lipopeptides development in cosmetics and pharmaceutical applications: A comprehensive review. Biotechnol Adv 2023; 67:108210. [PMID: 37460047 DOI: 10.1016/j.biotechadv.2023.108210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 07/05/2023] [Accepted: 07/09/2023] [Indexed: 07/25/2023]
Abstract
Lipopeptides are surface active, natural products of bacteria, fungi and green-blue algae origin, having diverse structures and functionalities. In analogy, a number of chemical synthesis techniques generated new designer lipopeptides with desirable features and functions. Lipopetides are self-assembly guided, supramolecular compounds which have the capacity of high-density presentation of the functional epitopes at the surface of the nanostructures. This feature contributes to their successful application in several industry sectors, including food, feed, personal care, and pharmaceutics. In this comprehensive review, the novel class of ribosomally synthesized lipopeptides is introduced alongside the more commonly occuring non-ribosomal lipopeptides. We highlight key representatives of the most researched as well as recently described lipopeptide families, with emphasis on structural features, self-assembly and associated functions. The common biological, chemical and hybrid production routes of lipopeptides, including prominent analogues and derivatives are also discussed. Furthermore, genetic engineering strategies aimed at increasing lipopeptide yields, diversity and biological activity are summarized and exemplified. With respect to application, this work mainly details the potential of lipopeptides in personal care and cosmetics industry as cleansing agents, moisturizer, anti-aging/anti-wrinkling, skin whitening and preservative agents as well as the pharmaceutical industry as anitimicrobial agents, vaccines, immunotherapy, and cancer drugs. Given that this review addresses human applications, we conclude on the topic of safety of lipopeptide formulations and their sustainable production.
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Affiliation(s)
- Melania Pilz
- Werner Siemens-Chair of Synthetic Biotechnology, Department of Chemistry, Technical University of Munich (TUM), 85748 Garching, Germany
| | - Philipp Cavelius
- Werner Siemens-Chair of Synthetic Biotechnology, Department of Chemistry, Technical University of Munich (TUM), 85748 Garching, Germany
| | - Farah Qoura
- Werner Siemens-Chair of Synthetic Biotechnology, Department of Chemistry, Technical University of Munich (TUM), 85748 Garching, Germany
| | - Dania Awad
- Werner Siemens-Chair of Synthetic Biotechnology, Department of Chemistry, Technical University of Munich (TUM), 85748 Garching, Germany.
| | - Thomas Brück
- Werner Siemens-Chair of Synthetic Biotechnology, Department of Chemistry, Technical University of Munich (TUM), 85748 Garching, Germany.
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3
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Das S, Das D. Rational Design of Peptide-based Smart Hydrogels for Therapeutic Applications. Front Chem 2021; 9:770102. [PMID: 34869218 PMCID: PMC8635208 DOI: 10.3389/fchem.2021.770102] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 10/22/2021] [Indexed: 12/12/2022] Open
Abstract
Peptide-based hydrogels have captivated remarkable attention in recent times and serve as an excellent platform for biomedical applications owing to the impressive amalgamation of unique properties such as biocompatibility, biodegradability, easily tunable hydrophilicity/hydrophobicity, modular incorporation of stimuli sensitivity and other functionalities, adjustable mechanical stiffness/rigidity and close mimicry to biological molecules. Putting all these on the same plate offers smart soft materials that can be used for tissue engineering, drug delivery, 3D bioprinting, wound healing to name a few. A plethora of work has been accomplished and a significant progress has been realized using these peptide-based platforms. However, designing hydrogelators with the desired functionalities and their self-assembled nanostructures is still highly serendipitous in nature and thus a roadmap providing guidelines toward designing and preparing these soft-materials and applying them for a desired goal is a pressing need of the hour. This review aims to provide a concise outline for that purpose and the design principles of peptide-based hydrogels along with their potential for biomedical applications are discussed with the help of selected recent reports.
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Affiliation(s)
- Saurav Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, India
| | - Debapratim Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, India
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4
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Muraoka T. Amphiphilic Peptides with Flexible Chains for Tuning Supramolecular Morphologies, Macroscopic Properties and Biological Functions. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.1033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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5
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Yaguchi A, Hiramatsu H, Ishida A, Oshikawa M, Ajioka I, Muraoka T. Hydrogel-Stiffening and Non-Cell Adhesive Properties of Amphiphilic Peptides with Central Alkylene Chains. Chemistry 2021; 27:9295-9301. [PMID: 33871881 DOI: 10.1002/chem.202100739] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Indexed: 12/17/2022]
Abstract
Amphiphilic peptides bearing terminal alkyl tails form supramolecular nanofibers that are increasingly used as biomaterials with multiple functionalities. Insertion of alkylene chains in peptides can be designed as another type of amphiphilic peptide, yet the influence of the internal alkylene chains on self-assembly and biological properties remains poorly defined. Unlike the terminal alkyl tails, the internal alkylene chains can affect not only the hydrophobicity but also the flexibility and packing of the peptides. Herein, we demonstrate the supramolecular and biological effects of the central alkylene chain length inserted in a peptide. Insertion of the alkylene chain at the center of the peptide allowed for strengthened β-sheet hydrogen bonds and modulation of the packing order, and consequently the amphiphilic peptide bearing C2 alkylene chain formed a hydrogel with the highest stiffness. Interestingly, the amphiphilic peptides bearing internal alkylene chains longer than C2 showed a diminished cell-adhesive property. This study offers a novel molecular design to tune mechanical and biological properties of peptide materials.
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Affiliation(s)
- Atsuya Yaguchi
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan
| | - Hirotsugu Hiramatsu
- Department of Applied Chemistry and Institute of Molecular Science, National Yang Ming Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu, 30010, Taiwan.,Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu, 30010, Taiwan
| | - Atsuya Ishida
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan
| | - Mio Oshikawa
- Center for Brain Integration Research, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.,Kanagawa Institute of Industrial Science and Technology, 705-1 Shimoimaizumi, Ebina, Kanagawa, 243-0435, Japan
| | - Itsuki Ajioka
- Center for Brain Integration Research, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.,Kanagawa Institute of Industrial Science and Technology, 705-1 Shimoimaizumi, Ebina, Kanagawa, 243-0435, Japan
| | - Takahiro Muraoka
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan.,Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, 3-8-1 Harumi-cho, Fuchu-shi, Tokyo, 183-8538, Japan
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6
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Rani A, Kavianinia I, De Leon-Rodriguez LM, McGillivray DJ, Williams DE, Brimble MA. Nanoribbon self-assembly and hydrogel formation from an NOctanoyl octapeptide derived from the antiparallel β-Interface of a protein homotetramer. Acta Biomater 2020; 114:233-243. [PMID: 32682054 DOI: 10.1016/j.actbio.2020.07.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/09/2020] [Accepted: 07/09/2020] [Indexed: 12/26/2022]
Abstract
The effect of installing different lipid chains (C6, C8, C10, and C16) on the N-terminus of an octapeptide derived from the antiparallel β-interface of the diaminopimelate decarboxylase protein homotetramer has been investigated. Notably, the C8 peptide conjugate assembled into wide twisted nanoribbons and formed hydrogels, which to the best of our knowledge constitutes the first example of a peptide containing an eight carbon alkyl chain that demonstrates these properties, a space typically occupied by peptide amphiphiles with long lipid chains. Furthermore, this self-assembling lipopeptide exhibited pH and temperature stability with shear thinning properties suitable for biomedical applications. Importantly, in this work the application of the polystyrene-based sorbent Diaion™ HP20SS for the simple large-scale purification of self-assembling peptides is presented as an alternative to the use of time-consuming and labor-intensive reverse-phase high-performance liquid chromatography. STATEMENT OF SIGNIFICANCE: Peptides that can self-assemble into defined nanostructures are highly attractive for many biomedical applications given their unique physical and chemical properties. It is recognized that self-assembling peptides derived from naturally occurring proteins offer an unlimited source of functionalities and structures, which are hard to uncover with designed sequences. In this study, we have investigated the effect of installing different lipids chains on the N-terminus of an octapeptide derived from the antiparallel β-interface of the diaminopimelate decarboxylase protein homo tetramer. We also reported the use of polymeric DiaionⓇ HP20SS beads as an alternative solid support to purify self-assembling peptides.
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Affiliation(s)
- Aakanksha Rani
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand; School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand; MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - Iman Kavianinia
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand; School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand; MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand; Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand
| | - Luis M De Leon-Rodriguez
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand
| | - Duncan J McGillivray
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand; School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand; 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; School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand; 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; School of Biological Sciences, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand; MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand; Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds St., Auckland 1010, New Zealand.
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7
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Su H, Wang F, Ran W, Zhang W, Dai W, Wang H, Anderson CF, Wang Z, Zheng C, Zhang P, Li Y, Cui H. The role of critical micellization concentration in efficacy and toxicity of supramolecular polymers. Proc Natl Acad Sci U S A 2020; 117:4518-4526. [PMID: 32071209 PMCID: PMC7060728 DOI: 10.1073/pnas.1913655117] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The inception and development of supramolecular chemistry have provided a vast library of supramolecular structures and materials for improved practice of medicine. In the context of therapeutic delivery, while supramolecular nanostructures offer a wide variety of morphologies as drug carriers for optimized targeting and controlled release, concerns are often raised as to how their morphological stability and structural integrity impact their in vivo performance. After intravenous (i.v.) administration, the intrinsic reversible and dynamic feature of supramolecular assemblies may lead them to dissociate upon plasma dilution to a concentration below their critical micellization concentration (CMC). As such, CMC represents an important characteristic for supramolecular biomaterials design, but its pharmaceutical role remains elusive. Here, we report the design of a series of self-assembling prodrugs (SAPDs) that spontaneously associate in aqueous solution into supramolecular polymers (SPs) with varying CMCs. Two hydrophobic camptothecin (CPT) molecules were conjugated onto oligoethylene-glycol (OEG)-decorated segments with various OEG repeat numbers (2, 4, 6, 8). Our studies show that the lower the CMC, the lower the maximum tolerated dose (MTD) in rodents. When administrated at the same dosage of 10 mg/kg (CPT equivalent), SAPD 1, the one with the lowest CMC, shows the best efficacy in tumor suppression. These observations can be explained by the circulation and dissociation of SAPD SPs and the difference in molecular and supramolecular distribution between excretion and organ uptake. We believe these findings offer important insight into the role of supramolecular stability in determining their therapeutic index and in vivo efficacy.
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Affiliation(s)
- Hao Su
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218
- Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218
| | - Feihu Wang
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218
- Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218
| | - Wei Ran
- State Key Laboratory of Drug Research and Center for Pharmaceutics, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Weijie Zhang
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218
- Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Wenbing Dai
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218
- Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Han Wang
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218
- Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218
| | - Caleb F Anderson
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218
- Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218
| | - Zongyuan Wang
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218
- Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218
- Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Chao Zheng
- State Key Laboratory of Drug Research and Center for Pharmaceutics, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Pengcheng Zhang
- State Key Laboratory of Drug Research and Center for Pharmaceutics, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yaping Li
- State Key Laboratory of Drug Research and Center for Pharmaceutics, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Honggang Cui
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218;
- Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218
- Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21231
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21205
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21205
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8
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Wei Z, Huang Q. Impact of covalent or non-covalent bound epigallocatechin-3-gallate (EGCG) on assembly, physicochemical characteristics and digestion of ovotransferrin fibrils. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2019.105314] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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10
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Dasgupta A, Das D. Designer Peptide Amphiphiles: Self-Assembly to Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:10704-10724. [PMID: 31330107 DOI: 10.1021/acs.langmuir.9b01837] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Peptide amphiphiles (PAs) are extremely attractive as molecular building blocks, especially in the bottom-up fabrication of supramolecular soft materials, and have potential in many important applications across various fields of science and technology. In recent years, we have designed and synthesized a large group of peptide amphiphiles. This library of PAs has the ability to self-assemble into a variety of aggregates such as fibers, nanosphere, vesicles, nanosheet, nanocups, nanorings, hydrogels, and so on. The mechanism behind the formation of such a wide range of structures is intriguing. Each system has its individual method of aggregation and results in assemblies with important applications in areas including chemistry, biology, and materials science. The aim of this feature article is to bring together our recent achievements with designer PAs with respect to their self-assembly processes and applications. Emphasis is placed on rational design, mechanistic aspects of the self-assembly processes, and the applications of these PAs. We hope that this article will provide a conceptual demonstration of the different approaches taken toward the construction of these task-specific PAs.
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Affiliation(s)
- Antara Dasgupta
- Eris Lifesciences , Plot Nos. 30 and 31, Brahmaputra Industrial Park, Amingaon, North Guwahati , Guwahati , Assam 781031 , India
| | - Debapratim Das
- Department of Chemistry , Indian Institute of Technology Guwahati , Assam - 781039 , India
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11
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How SC, Hsin A, Chen GY, Hsu WT, Yang SM, Chou WL, Chou SH, Wang SSS. Exploring the influence of brilliant blue G on amyloid fibril formation of lysozyme. Int J Biol Macromol 2019; 138:37-48. [PMID: 31295491 DOI: 10.1016/j.ijbiomac.2019.07.055] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/28/2019] [Accepted: 07/07/2019] [Indexed: 12/19/2022]
Abstract
Evidence suggests that amyloid fibril mitigation/inhibition is considered a promising approach toward treating amyloid diseases. In this work, we first examined how amyloid fibrillogenesis of lysozyme was affected by BBG, a safe triphenylmethane compound with nice blood-brain-barrier-permeability, and found that shorter fibrillar species were formed in the lysozyme samples treated with BBG. Next, alterations in the features including the secondary as well as tertiary structure, extent of aggregation, and molecular distribution of lysozyme triggered by the addition of BBG were examined by various spectroscopic techniques, right-angle light scattering, dynamic light scattering, and SDS-PAGE. In addition, we have investigated how BBG affected the lysozyme fibril-induced cytotoxicity in SH-SY5Y cells. We found that a large quantity of shorter fibrillar species and more lysozyme monomers were present in the samples treated with BBG. Also, the addition of BBG rescued SH-SY5Y cells from cell death induced by amyloid fibrils of lysozyme. Finally, information about the binding sites and interacting forces involved in the BBG-lysozyme interaction was further explored using synchronous fluorescence and molecular docking approaches. Molecular docking results revealed that, apart from the hydrophobic interaction(s), hydrogen bonding, electrostatic interactions, and van der Waal forces may also be involved in the binding interaction.
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Affiliation(s)
- Su-Chun How
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Ai Hsin
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Guan-Yu Chen
- Department of Life Science, Fu-Jen Catholic University, Xinzhuang Dist., New Taipei City, Taiwan
| | - Wei-Tse Hsu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Szu-Ming Yang
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Wei-Lung Chou
- Department of Safety, Health and Environmental Engineering, Hungkuang University, Sha Lu, Taichung City 433, Taiwan.
| | - Shiu-Huey Chou
- Department of Life Science, Fu-Jen Catholic University, Xinzhuang Dist., New Taipei City, Taiwan.
| | - Steven S-S Wang
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
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12
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Wang S, Wang T, Zhang J, Xu S, Liu H. Disruption of Tumor Cells Using a pH-Activated and Thermosensitive Antitumor Lipopeptide Containing a Leucine Zipper Structure. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:8818-8827. [PMID: 29914261 DOI: 10.1021/acs.langmuir.8b00474] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Antitumor peptides may potentially alleviate the problem of chemoresistance but do not yet target tumor cells and would be cytotoxic to normal cells. Here, we designed a pH-activated and thermosensitive lipopeptide (C6-Pep) containing a leucine zipper and an alkyl chain and assessed the ability of C6-Pep to kill cancer cells. Pep, the same sequence without the N-terminal hexanoic acid moiety, was generated as a less hydrophobic control. First, lipopeptide adsorption into lipid monolayers was studied using Langmuir-Blodgett and polarization modulation infrared reflection adsorption spectroscopy. Under weakly acid conditions, electrostatic interactions between C6-Pep and negatively charged phospholipids increased the adsorption/insertion of C6-Pep (vs Pep) into lipid monolayers. Cargo leakage from liposomes was assayed to model lipopeptide-induced lipid membrane disruption. The ability of C6-Pep to disrupt liposomes depended on the peptide molecular structure/hydrophobicity, solution pH, and temperature-induced uncoiling of the zipper structure; the greatest cargo leakage from the liposome with negative charge was observed for C6-Pep at pH 5.5 under mildly hyperthermic conditions (45 °C). In vitro, C6-Pep was significantly more cytotoxic toward HeLa cells at pH 5.5 under hyperthermic conditions than at pH 7.4 and/or 37 °C. Overall, this study demonstrates that amphipathic C6-Pep can insert into cell membranes in the low-pH tumor microenvironment, whereas the application of heat promotes the uncoiling of the zipper structure, leading to the disruption of tumor cell membranes and cell death. pH-activated and thermosensitive C6-Pep represents a promising tool to kill cancer cells via a strategy that does not invoke chemoresistance and may have low side effects.
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Affiliation(s)
- Sijia Wang
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , PR China
| | - Tong Wang
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , PR China
| | - Junqi Zhang
- Key Laboratory of Medical Molecular Virology (MOE & MOH), School of Basic Medical Sciences , Fudan University , Shanghai 200032 , PR China
| | - Shouhong Xu
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , PR China
| | - Honglai Liu
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , PR China
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Saha B, Chowdhury S, Sanyal D, Chattopadhyay K, Suresh Kumar G. Comparative Study of Toluidine Blue O and Methylene Blue Binding to Lysozyme and Their Inhibitory Effects on Protein Aggregation. ACS OMEGA 2018; 3:2588-2601. [PMID: 30023840 PMCID: PMC6044680 DOI: 10.1021/acsomega.7b01991] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 02/19/2018] [Indexed: 06/01/2023]
Abstract
A comparative binding interaction of toluidine blue O (TBO) and methylene blue (MB) with lysozyme was investigated by multifaceted biophysical approaches as well as from the aspects of in silico biophysics. The bindings were static, and it occurred via ground-state complex formation as confirmed from time-resolved fluorescence experiments. From steady-state fluorescence and anisotropy, binding constants were calculated, and it was found that TBO binds more effectively than MB. Synchronous fluorescence spectra revealed that binding of dyes to lysozyme causes polarity changes around the tryptophan (Trp) moiety, most likely at Trp 62 and 63. Calorimetric titration also depicts the higher binding affinity of TBO over MB, and the interactions were exothermic and entropy-driven. In silico studies revealed the potential binding pockets in lysozyme and the participation of residues Trp 62 and 63 in ligand binding. Furthermore, calculations of thermodynamic parameters from the theoretical docking studies were in compliance with experimental observations. Moreover, an inhibitory effect of these dyes to lysozyme fibrillogenesis was examined, and the morphology of the formed fibril was scanned by atomic force microscopy imaging. TBO was observed to exhibit higher potential in inhibiting the fibrillogenesis than MB, and this phenomenon stands out as a promising antiamyloid therapeutic strategy.
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Affiliation(s)
- Baishakhi Saha
- Organic
and Medicinal Chemistry Division, CSIR-Indian
Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Sourav Chowdhury
- Structural
Biology and Bioinformatics Division, CSIR-Indian
Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Dwipanjan Sanyal
- Structural
Biology and Bioinformatics Division, CSIR-Indian
Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Krishnananda Chattopadhyay
- Structural
Biology and Bioinformatics Division, CSIR-Indian
Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Gopinatha Suresh Kumar
- Organic
and Medicinal Chemistry Division, CSIR-Indian
Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Kolkata 700 032, India
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14
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Edwards-Gayle CJC, Hamley IW. Self-assembly of bioactive peptides, peptide conjugates, and peptide mimetic materials. Org Biomol Chem 2018; 15:5867-5876. [PMID: 28661532 DOI: 10.1039/c7ob01092c] [Citation(s) in RCA: 118] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Molecular self-assembly is a multi-disciplinary field of research, with potential chemical and biological applications. One of the main driving forces of self-assembly is molecular amphiphilicity, which can drive formation of complex and stable nanostructures. Self-assembling peptide and peptide conjugates have attracted great attention due to their biocompatibility, biodegradability and biofunctionality. Understanding assembly enables the better design of peptide amphiphiles which may form useful and functional nanostructures. This review covers self-assembly of amphiphilic peptides and peptide mimetic materials, as well as their potential applications.
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Affiliation(s)
| | - Ian W Hamley
- Department of Chemistry, University of Reading, Whiteknights, Reading, RG6 6AD, UK.
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15
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Ma W, Su H, Cheetham AG, Zhang W, Wang Y, Kan Q, Cui H. Synergistic antitumor activity of a self-assembling camptothecin and capecitabine hybrid prodrug for improved efficacy. J Control Release 2017; 263:102-111. [PMID: 28082170 DOI: 10.1016/j.jconrel.2017.01.015] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 12/31/2016] [Accepted: 01/08/2017] [Indexed: 11/29/2022]
Abstract
The direct use of anticancer drugs to create their own nanostructures is an emerging concept in the field of drug delivery to obtain nanomedicines of high drug loading and high reproducibility, and the combination use of two or more drugs has been a proven clinical strategy to enhance therapeutic outcomes. We report here the synthesis, assembly and cytotoxicity evaluation of self-assembling hybrid prodrugs containing both camptothecin (CPT) and a capecitabine (Cap) analogue. CPT and Cap molecules were conjugated onto a short β-sheet-forming peptide (Sup35) to yield three different self-assembling prodrugs (dCPT-Sup35, CPT-Cap-Sup35 and dCap-Sup35). We found that the chemical structure of conjugated drugs could strongly influence their assembled morphology as well as their structural stability in aqueous solution. With a decrease in number of CPT units, the resulting nanostructures exhibited a morphological transformation from nanofibers (dCPT-Sup35) to filaments (CPT-Cap-Sup35) then to spherical particles (dCap-Sup35). Notably, the hybrid CPT-Cap prodrug showed a synergistic effect and significantly enhanced potency against three esophageal adenocarcinoma cell lines compared with the two homo-prodrugs (dCPT-Sup35 and dCap-Sup35) as well as free parent drugs (CPT, 5-Fu and CPT/5-FU mixture (1:1)). We believe this work represents a conceptual advancement in integrating two structurally distinct drugs of different action mechanisms into a single self-assembling hybrid prodrug to construct self-deliverable nanomedicines for more effective combination chemotherapy.
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Affiliation(s)
- Wang Ma
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe Eastern Road, Zhengzhou 450052, Henan, China
| | - Hao Su
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA; Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218, USA
| | - Andrew G Cheetham
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA; Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218, USA
| | - Weifang Zhang
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe Eastern Road, Zhengzhou 450052, Henan, China
| | - Yuzhu Wang
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA; Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218, USA
| | - QuanCheng Kan
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe Eastern Road, Zhengzhou 450052, Henan, China.
| | - Honggang Cui
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe Eastern Road, Zhengzhou 450052, Henan, China; Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA; Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218, USA; Department of Oncology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 North Broadway, Baltimore, MD 21231, USA.
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16
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Castelletto V, Kaur A, Kowalczyk RM, Hamley IW, Reza M, Ruokolainen J. Supramolecular Hydrogel Formation in a Series of Self-Assembling Lipopeptides with Varying Lipid Chain Length. Biomacromolecules 2017; 18:2013-2023. [DOI: 10.1021/acs.biomac.7b00057] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- V. Castelletto
- School
of Chemistry, Pharmacy and Food Biosciences. University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - A. Kaur
- School
of Chemistry, Pharmacy and Food Biosciences. University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - R. M. Kowalczyk
- School
of Chemistry, Pharmacy and Food Biosciences. University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - I. W. Hamley
- School
of Chemistry, Pharmacy and Food Biosciences. University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - M. Reza
- Department
of Applied Physics, Aalto University School of Science, Aalto FI-00076, Finland
| | - J. Ruokolainen
- Department
of Applied Physics, Aalto University School of Science, Aalto FI-00076, Finland
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17
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Wang S, Han X, Liu D, Li M, Xu S, Liu H. Melting Behavior of Zipper-Structured Lipopeptides in Lipid Bilayer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:1478-1485. [PMID: 28099806 DOI: 10.1021/acs.langmuir.6b04080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A zipper-structured lipopeptide is expected to play a role of "intelligent valve" in the lipid bilayer. In this paper, a series of zipper-structured lipopeptides have been designed for preparing thermocontrollable hybrid liposomes. Their conformational transition as a function of temperature in lipid bilayer has been investigated for understanding the influences of molecular structure and bilayer property on biofunction. The melting temperatures Tm of the lipopeptides have been found to depend on their molecular structures. When the lipopeptides have been doped in bilayer, an increase of size of alkyl chain increases the stability of the α-helix resulting in a decrease in fluidity of lipid bilayer. However, an increase of amino groups at N-terminal is found to decrease the stability of the spatial structure. The thermocontrollability of the "valve" in lipid bilayer is confirmed by drug release experiments under different temperatures. Meanwhile, effects of bilayer properties on the thermosensitivity of lipopeptides have also been investigated. Results show the Tm of lipopeptide doped in bilayer decreases with the increase of membrane fluidity. Furthermore, the reversibility of the thermocontrolled "valve" is also proven by release drug under intermittent temperatures. It could be concluded that the molecular structure of the lipopeptide, as well as the property of bilayer, give great influence on the biofunction of the hybrid liposomes.
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Affiliation(s)
- Sijia Wang
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology , Shanghai, 200237, China
| | - Xia Han
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology , Shanghai, 200237, China
| | - Danyang Liu
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology , Shanghai, 200237, China
| | - Mengya Li
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology , Shanghai, 200237, China
| | - Shouhong Xu
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology , Shanghai, 200237, China
| | - Honglai Liu
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology , Shanghai, 200237, China
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18
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Basu A, Suresh Kumar G. Binding and Inhibitory Effect of the Dyes Amaranth and Tartrazine on Amyloid Fibrillation in Lysozyme. J Phys Chem B 2017; 121:1222-1239. [DOI: 10.1021/acs.jpcb.6b10465] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Anirban Basu
- Biophysical Chemistry Laboratory Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700 032, India
| | - Gopinatha Suresh Kumar
- Biophysical Chemistry Laboratory Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700 032, India
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19
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Basu A, Suresh Kumar G. Interaction and inhibitory influence of the azo dye carmoisine on lysozyme amyloid fibrillogenesis. MOLECULAR BIOSYSTEMS 2017. [DOI: 10.1039/c7mb00207f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The azo dye carmoisine has a significant inhibitory effect on fibrillogenesis in lysozyme.
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Affiliation(s)
- Anirban Basu
- Biophysical Chemistry Laboratory
- Organic & Medicinal Chemistry Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata 700 032
- India
| | - Gopinatha Suresh Kumar
- Biophysical Chemistry Laboratory
- Organic & Medicinal Chemistry Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata 700 032
- India
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20
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Castelletto V, Kaur A, Hamley I, Barnes RH, Karatzas KA, Hermida-Merino D, Swioklo S, Connon CJ, Stasiak J, Reza M, Ruokolainen J. Hybrid membrane biomaterials from self-assembly in polysaccharide and peptide amphiphile mixtures: controllable structural and mechanical properties and antimicrobial activity. RSC Adv 2017. [DOI: 10.1039/c6ra27244d] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Macroscopic capsules, with tunable properties based on hierarchical self-assembly on multiple lengthscales, are prepared from the co-operative self-assembly of polysaccharide and peptide amphiphiles.
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Affiliation(s)
- V. Castelletto
- School of Chemistry, Pharmacy and Food Biosciences
- University of Reading
- Reading RG6 6AD
- UK
| | - A. Kaur
- School of Chemistry, Pharmacy and Food Biosciences
- University of Reading
- Reading RG6 6AD
- UK
| | - I. W. Hamley
- School of Chemistry, Pharmacy and Food Biosciences
- University of Reading
- Reading RG6 6AD
- UK
| | - R. H. Barnes
- School of Chemistry, Pharmacy and Food Biosciences
- University of Reading
- Reading RG6 6AD
- UK
| | - K.-A. Karatzas
- School of Chemistry, Pharmacy and Food Biosciences
- University of Reading
- Reading RG6 6AD
- UK
| | | | - S. Swioklo
- Institute of Genetic Medicine
- Newcastle University
- International Centre for Life
- Newcastle upon Tyne NE1 3BZ
- UK
| | - C. J. Connon
- Institute of Genetic Medicine
- Newcastle University
- International Centre for Life
- Newcastle upon Tyne NE1 3BZ
- UK
| | - J. Stasiak
- Department of Chemical Engineering and Biotechnology
- Cambridge CB2 3RA
- UK
| | - M. Reza
- Department of Applied Physics
- Aalto University School of Science
- FI-00076 Aalto
- Finland
| | - J. Ruokolainen
- Department of Applied Physics
- Aalto University School of Science
- FI-00076 Aalto
- Finland
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21
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Ekiz MS, Cinar G, Khalily MA, Guler MO. Self-assembled peptide nanostructures for functional materials. NANOTECHNOLOGY 2016; 27:402002. [PMID: 27578525 DOI: 10.1088/0957-4484/27/40/402002] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Nature is an important inspirational source for scientists, and presents complex and elegant examples of adaptive and intelligent systems created by self-assembly. Significant effort has been devoted to understanding these sophisticated systems. The self-assembly process enables us to create supramolecular nanostructures with high order and complexity, and peptide-based self-assembling building blocks can serve as suitable platforms to construct nanostructures showing diverse features and applications. In this review, peptide-based supramolecular assemblies will be discussed in terms of their synthesis, design, characterization and application. Peptide nanostructures are categorized based on their chemical and physical properties and will be examined by rationalizing the influence of peptide design on the resulting morphology and the methods employed to characterize these high order complex systems. Moreover, the application of self-assembled peptide nanomaterials as functional materials in information technologies and environmental sciences will be reviewed by providing examples from recently published high-impact studies.
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Affiliation(s)
- Melis Sardan Ekiz
- Institute of Materials Science and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, Ankara, 06800 Turkey
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22
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Su H, Zhang P, Cheetham AG, Koo JM, Lin R, Masood A, Schiapparelli P, Quiñones-Hinojosa A, Cui H. Supramolecular Crafting of Self-Assembling Camptothecin Prodrugs with Enhanced Efficacy against Primary Cancer Cells. Theranostics 2016; 6:1065-74. [PMID: 27217839 PMCID: PMC4876630 DOI: 10.7150/thno.15420] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 03/21/2016] [Indexed: 12/01/2022] Open
Abstract
Chemical modification of small molecule hydrophobic drugs is a clinically proven strategy to devise prodrugs with enhanced treatment efficacy. While this prodrug strategy improves the parent drug's water solubility and pharmacokinetic profile, it typically compromises the drug's potency against cancer cells due to the retarded drug release rate and reduced cellular uptake efficiency. Here we report on the supramolecular design of self-assembling prodrugs (SAPD) with much improved water solubility while maintaining high potency against cancer cells. We found that camptothecin (CPT) prodrugs created by conjugating two CPT molecules onto a hydrophilic segment can associate into filamentous nanostructures in water. Our results suggest that these SAPD exhibit much greater efficacy against primary brain cancer cells relative to that of irinotecan, a clinically used CPT prodrug. We believe these findings open a new avenue for rational design of supramolecular prodrugs for cancer treatment.
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Affiliation(s)
- Hao Su
- 1. Department of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218 United States
| | - Pengcheng Zhang
- 1. Department of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218 United States
| | - Andrew G Cheetham
- 1. Department of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218 United States
| | - Jin Mo Koo
- 1. Department of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218 United States
| | - Ran Lin
- 1. Department of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218 United States
| | - Asad Masood
- 1. Department of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218 United States
| | - Paula Schiapparelli
- 2. Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland 21224, United States
| | - Alfredo Quiñones-Hinojosa
- 2. Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland 21224, United States
- 4. Department of Oncology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Honggang Cui
- 1. Department of Chemical and Biomolecular Engineering, and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218 United States
- 3. Center for Nanomedicine, The Wilmer Eye Institute, Johns Hopkins University School of Medicine, 400 North Broadway, Baltimore, Maryland 21231, United States
- 4. Department of Oncology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
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23
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Huang Z, Che S. Fabrication of Chiral Materials via Self-Assembly and Biomineralization of Peptides. CHEM REC 2015; 15:665-74. [DOI: 10.1002/tcr.201402096] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Zhehao Huang
- School of Chemistry and Chemical Technology, State Key Laboratory of Composite Materials; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Shunai Che
- School of Chemistry and Chemical Technology, State Key Laboratory of Composite Materials; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P. R. China
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24
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Eskandari S, Stephenson RJ, Fuaad AA, Apte SH, Doolan DL, Toth I. Synthesis and Characterisation of Self-Assembled and Self-Adjuvanting Asymmetric Multi-Epitope Lipopeptides of Ovalbumin. Chemistry 2014; 21:1251-61. [DOI: 10.1002/chem.201404997] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Indexed: 01/25/2023]
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25
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Cui H, Cheetham AG, Pashuck ET, Stupp SI. Amino acid sequence in constitutionally isomeric tetrapeptide amphiphiles dictates architecture of one-dimensional nanostructures. J Am Chem Soc 2014; 136:12461-8. [PMID: 25144245 PMCID: PMC4156871 DOI: 10.1021/ja507051w] [Citation(s) in RCA: 213] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Indexed: 12/19/2022]
Abstract
The switching of two adjacent amino acids can lead to differences in how proteins fold thus affecting their function. This effect has not been extensively explored in synthetic peptides in the context of supramolecular self-assembly. Toward this end, we report here the use of isomeric peptide amphiphiles as molecular building blocks to create one-dimensional (1D) nanostructures. We show that four peptide amphiphile isomers, with identical composition but a different sequence of their four amino acids, can form drastically different types of 1D nanostructures under the same conditions. We found that molecules with a peptide sequence of alternating hydrophobic and hydrophilic amino acids such as VEVE and EVEV self-assemble into flat nanostructures that can be either helical or twisted. On the other hand, nonalternating isomers such as VVEE and EEVV result in the formation of cylindrical nanofibers. Furthermore, we also found that when the glutamic acid is adjacent to the alkyl tail the supramolecular assemblies appear to be internally flexible compared to those with valine as the first amino acid. These results clearly demonstrate the significance of peptide side chain interactions in determining the architectures of supramolecular assemblies.
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Affiliation(s)
- Honggang Cui
- Department of Materials Science
and Engineering, Department of Chemistry, Department of Medicine, and Department of
Biomedical Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
| | - Andrew G. Cheetham
- Simpson
Querrey Institute, Northwestern University, Chicago, Illinois 60611, United States
| | - E. Thomas Pashuck
- Department of Materials Science
and Engineering, Department of Chemistry, Department of Medicine, and Department of
Biomedical Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
| | - Samuel I. Stupp
- Department of Materials Science
and Engineering, Department of Chemistry, Department of Medicine, and Department of
Biomedical Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
- Simpson
Querrey Institute, Northwestern University, Chicago, Illinois 60611, United States
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26
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Mu Y, Yu M. Effects of hydrophobic interaction strength on the self-assembled structures of model peptides. SOFT MATTER 2014; 10:4956-4965. [PMID: 24888420 DOI: 10.1039/c4sm00378k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Stable and ordered self-assembled peptide nanostructures are formed as a result of cooperative effects of various relatively weak intermolecular interactions. We systematically studied the influence of hydrophobic interaction strength and temperature on the self-assembly of peptides with a coarse-grained model by Monte Carlo simulations. The simulation results show a rich phase behavior of peptide self-assembly, indicating that the formation and morphology of peptide assemblies may be tuned by varying the temperature and the strength of hydrophobic interactions. There exist optimal combinations of temperature and hydrophobic interaction strength where ordered fibrillar nanostructures are readily formed. Our simulation results not only facilitate the understanding of the self-assembly behavior of peptides at the molecular level, but also provide useful insights into the development of fabrication strategies for high-quality peptide fibrils.
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Affiliation(s)
- Yan Mu
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, Guangdong, China.
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27
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Ramakers BEI, van Hest JCM, Löwik DWPM. Molecular tools for the construction of peptide-based materials. Chem Soc Rev 2014; 43:2743-56. [PMID: 24448606 DOI: 10.1039/c3cs60362h] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Proteins and peptides are fundamental components of living systems where they play crucial roles at both functional and structural level. The versatile biological properties of these molecules make them interesting building blocks for the construction of bio-active and biocompatible materials. A variety of molecular tools can be used to fashion the peptides necessary for the assembly of these materials. In this tutorial review we shall describe five of the main techniques, namely solid phase peptide synthesis, native chemical ligation, Staudinger ligation, NCA polymerisation, and genetic engineering, that have been used to great effect for the construction of a host of peptide-based materials.
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Affiliation(s)
- B E I Ramakers
- Radboud University Nijmegen, Institute for Molecules and Materials, Bio-Organic Chemistry, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.
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28
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Fluorescence Investigation of Interactions Between Novel Benzanthrone Dyes and Lysozyme Amyloid Fibrils. J Fluoresc 2013; 24:493-504. [DOI: 10.1007/s10895-013-1318-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 11/07/2013] [Indexed: 10/25/2022]
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29
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Wu JW, Liu KN, How SC, Chen WA, Lai CM, Liu HS, Hu CJ, Wang SSS. Carnosine's effect on amyloid fibril formation and induced cytotoxicity of lysozyme. PLoS One 2013; 8:e81982. [PMID: 24349167 PMCID: PMC3859581 DOI: 10.1371/journal.pone.0081982] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Accepted: 10/20/2013] [Indexed: 11/23/2022] Open
Abstract
Carnosine, a common dipeptide in mammals, has previously been shown to dissemble alpha-crystallin amyloid fibrils. To date, the dipeptide's anti-fibrillogensis effect has not been thoroughly characterized in other proteins. For a more complete understanding of carnosine's mechanism of action in amyloid fibril inhibition, we have investigated the effect of the dipeptide on lysozyme fibril formation and induced cytotoxicity in human neuroblastoma SH-SY5Y cells. Our study demonstrates a positive correlation between the concentration and inhibitory effect of carnosine against lysozyme fibril formation. Molecular docking results show carnosine's mechanism of fibrillogenesis inhibition may be initiated by binding with the aggregation-prone region of the protein. The dipeptide attenuates the amyloid fibril-induced cytotoxicity of human neuronal cells by reducing both apoptotic and necrotic cell deaths. Our study provides solid support for carnosine's amyloid fibril inhibitory property and its effect against fibril-induced cytotoxicity in SH-SY5Y cells. The additional insights gained herein may pave way to the discovery of other small molecules that may exert similar effects against amyloid fibril formation and its associated neurodegenerative diseases.
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Affiliation(s)
- Josephine W. Wu
- Department of Optometry, Central Taiwan University of Science and Technology, Taichung, Taiwan,
- * E-mail: (JWW); (SSSW)
| | - Kuan-Nan Liu
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
| | - Su-Chun How
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
| | - Wei-An Chen
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
| | - Chia-Min Lai
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
| | - Hwai-Shen Liu
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
| | - Chaur-Jong Hu
- Department of Neurology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Steven S. -S. Wang
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
- * E-mail: (JWW); (SSSW)
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Rawat A, Nagaraj R. Covalently attached fatty acyl chains alter the aggregation behavior of an amyloidogenic peptide derived from human β(2)-microglobulin. J Pept Sci 2013; 19:770-83. [PMID: 24243599 DOI: 10.1002/psc.2575] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Revised: 09/17/2013] [Accepted: 09/23/2013] [Indexed: 12/14/2022]
Abstract
Aggregation of a polypeptide chain into highly ordered amyloid aggregates is a complex process. Various factors, both extrinsic and intrinsic to the polypeptide chain, have been shown to perturb this process, leading to a drastic change in the amyloidogenic behavior, which is reflected in the polymorphism of amyloid aggregates at various levels of self-assembly. In this paper, we have investigated the ability of covalently linked long-chain fatty acids in modulating the self-assembly of an aromatic amino acid-rich highly amyloidogenic sequence derived from the amino acid region 59-71 of human β2-microglobulin by thioflavin T (ThT) fluorescence microscopy, circular dichroism, and fluorescence spectroscopy. Our results indicate that under identical conditions of dissolution and concentration, each peptide enhances the fluorescence of ThT. However, the aggregates are morphologically distinct. For the same peptide, the aggregate morphologies are dependent on peptide concentration. Further, an optimum concentration, which varies with solution ionic strength, is required for the formation of fibrillar aggregates. We show that covalent modification of this amyloidogenic sequence, with long-chain fatty acids, affects the way the higher order amyloid structures assemble from the cross-β units, in fatty acyl chain-dependent and position-dependent manner. Our data indicate that noncovalent interactions leading to amyloid fibril formation can be modulated by the hydrophobicity of covalently attached long-chain fatty acids resulting in self-assembly of the peptide chain to form nonfibrillar aggregates.
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Affiliation(s)
- Anoop Rawat
- CSIR - Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, 500 007, India
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31
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Nieto-Ortega B, Nebot VJ, Miravet JF, Escuder B, Navarrete JTL, Casado J, Ramírez FJ. Vibrational Circular Dichroism Shows Reversible Helical Handedness Switching in Peptidomimetic l-Valine Fibrils. J Phys Chem Lett 2012; 3:2120-2124. [PMID: 26295757 DOI: 10.1021/jz300725d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We elucidate the supramolecular organization in the form of microsize fibrils of gels formed by a l-Valine peptidomimetic compound. Analysis was based on circular dichroism spectroscopies, vibrational (VCD) and electronic (CD), supported by microscopy (atomic force and scanning electron). We show how the VCD spectra give account of the micrometric structure of the fibrils formed by the helicoidal arrangement of simpler proto-fibrils, which are organized in a lower hierarchical level. This ability is used to monitorize a fully reversible change in the handedness of the helix by modulating different external stimuli as pH or ionic strength, thus providing the first observation by VCD of such a phenomenon in a short peptide.
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Affiliation(s)
- Belén Nieto-Ortega
- †Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga, Málaga 29071, Spain
| | - Vicent J Nebot
- ‡Department de Química Inorgànica I Orgànica, Universitat Jaume I, Castellón 12071, Spain
| | - Juan F Miravet
- ‡Department de Química Inorgànica I Orgànica, Universitat Jaume I, Castellón 12071, Spain
| | - Beatriu Escuder
- ‡Department de Química Inorgànica I Orgànica, Universitat Jaume I, Castellón 12071, Spain
| | - Juan T López Navarrete
- †Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga, Málaga 29071, Spain
| | - Juan Casado
- †Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga, Málaga 29071, Spain
| | - Francisco J Ramírez
- †Departamento de Química Física, Facultad de Ciencias, Universidad de Málaga, Málaga 29071, Spain
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32
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Lalatsa A, Schätzlein AG, Mazza M, Le TBH, Uchegbu IF. Amphiphilic poly(l-amino acids) — New materials for drug delivery. J Control Release 2012; 161:523-36. [DOI: 10.1016/j.jconrel.2012.04.046] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 04/17/2012] [Accepted: 04/18/2012] [Indexed: 01/16/2023]
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33
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Missirlis D, Chworos A, Fu CJ, Khant HA, Krogstad DV, Tirrell M. Effect of the peptide secondary structure on the peptide amphiphile supramolecular structure and interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6163-70. [PMID: 21488620 PMCID: PMC3103120 DOI: 10.1021/la200800e] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Bottom-up fabrication of self-assembled nanomaterials requires control over forces and interactions between building blocks. We report here on the formation and architecture of supramolecular structures constructed from two different peptide amphiphiles. Inclusion of four alanines between a 16-mer peptide and a 16 carbon long aliphatic tail resulted in a secondary structure shift of the peptide headgroups from α helices to β sheets. A concomitant shift in self-assembled morphology from nanoribbons to core-shell worm-like micelles was observed by cryogenic transmission electron microscopy (cryo-TEM) and atomic force microscopy (AFM). In the presence of divalent magnesium ions, these a priori formed supramolecular structures interacted in distinct manners, highlighting the importance of peptide amphiphile design in self-assembly.
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Affiliation(s)
- Dimitris Missirlis
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, USA
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA
- Department of Bioengineering, University of California, Berkeley, CA 94720, USA
| | - Arkadiusz Chworos
- Department of Physics, University of California, Santa Barbara, CA 93106-9530, USA
- The Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences in Lodz, Sienkiewicza 112, Lodz, 90363, Poland
| | - Caroline J. Fu
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, TX 77030, USA
| | - Htet A. Khant
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, TX 77030, USA
| | - Daniel V. Krogstad
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA
- Materials Department, University of California, Santa Barbara, CA 93106, USA
| | - Matthew Tirrell
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, USA
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA
- Department of Bioengineering, University of California, Berkeley, CA 94720, USA
- Materials Department, University of California, Santa Barbara, CA 93106, USA
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34
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Canalle LA, van der Knaap M, Overhand M, van Hest JCM. A comparison of triazole-forming bioconjugation techniques for constructing comb-shaped peptide-polymer bioconjugates. Macromol Rapid Commun 2010; 32:203-8. [PMID: 21433141 DOI: 10.1002/marc.201000507] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2010] [Revised: 09/06/2010] [Indexed: 12/18/2022]
Abstract
The grafting-to of a peptide to a side chain functional polymer was investigated using "click" chemistry. Two click reactions were compared: the copper-free strain-promoted azide-alkyne 1,3-cycloaddition (SPAAC) and the traditional copper-catalyzed azide-alkyne 1,3-cycloaddition (CuAAC). For the resulting comb-shaped products, it was found that the steric bulk of the conjugation moiety used in SPAAC limits the degree of grafting for these highly dense systems, whereas CuAAC gives (near) quantitative functionalization.
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Affiliation(s)
- Luiz A Canalle
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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35
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Liang Y, Lynn DG, Berland KM. Direct observation of nucleation and growth in amyloid self-assembly. J Am Chem Soc 2010; 132:6306-8. [PMID: 20397724 DOI: 10.1021/ja910964c] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Access to native protein structure depends on precise polypeptide folding and assembly pathways. Identifying folding missteps that may lead to the nearly 40 protein misfolding diseases could feature prominently in the development of intervention strategies. Accordingly, we have investigated the earliest steps of assembly by the folding nucleus of the Alzheimer's disease Abeta peptide with real-time imaging and fluorescence correlation spectroscopy. These analyses reveal the immediate formation of large micrometer size clusters maintaining properties of intermolecular molten globules. These dynamic unstructured aggregates serve as the nucleating sites for amyloid growth and, as with native protein folding, appear important for backbone desolvation. The resulting amyloid nucleus however is able to template monomer addition from solution at rates from 2K peptides/s at millimolar peptide concentrations. This direct observation of amyloid assembly unifies several divergent models that currently exist for protein misfolding.
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Affiliation(s)
- Yan Liang
- The Center for Fundamental and Applied Molecular Evolution and the Center for Chemical Evolution, Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, USA
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36
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Missirlis D, Farine M, Kastantin M, Ananthanarayanan B, Neumann T, Tirrell M. Linker Chemistry Determines Secondary Structure of p5314−29 in Peptide Amphiphile Micelles. Bioconjug Chem 2010; 21:465-75. [DOI: 10.1021/bc900383m] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Dimitris Missirlis
- Department of Chemical Engineering and Materials and Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Bioengineering, University of California, Berkeley, California, 94720
| | - Marc Farine
- Department of Chemical Engineering and Materials and Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Bioengineering, University of California, Berkeley, California, 94720
| | - Mark Kastantin
- Department of Chemical Engineering and Materials and Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Bioengineering, University of California, Berkeley, California, 94720
| | - Badriprasad Ananthanarayanan
- Department of Chemical Engineering and Materials and Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Bioengineering, University of California, Berkeley, California, 94720
| | - Thorsten Neumann
- Department of Chemical Engineering and Materials and Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Bioengineering, University of California, Berkeley, California, 94720
| | - Matthew Tirrell
- Department of Chemical Engineering and Materials and Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Bioengineering, University of California, Berkeley, California, 94720
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37
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Radu-Wu LC, Yang J, Wu K, Kopecek J. Self-assembled hydrogels from poly[N-(2-hydroxypropyl)methacrylamide] grafted with beta-sheet peptides. Biomacromolecules 2009; 10:2319-27. [PMID: 19591463 DOI: 10.1021/bm9005084] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new hybrid hydrogel based on poly[N-(2-hydroxypropyl)methacrylamide] grafted with a beta-sheet peptide, Beta11, was designed. Circular dichroism spectroscopy indicated that the folding ability of beta-sheet peptide was retained in the hybrid system, whereas the sensitivity of the peptide toward temperature and pH variations was hindered. The polymer backbone also prevented the twisting of the fibrils that resulted from the antiparallel arrangement of the beta-strands, as proved by Fourier transform infrared spectroscopy. Thioflavin T binding experiments and transmission electron microscopy showed fibril formation with minimal lateral aggregation. As a consequence, the graft copolymer self-assembled into a hydrogel in aqueous environment. This process was mediated by association of beta-sheet domains. Scanning electron microscopy revealed a particular morphology of the network characterized by long-range order and uniformly aligned lamellae. Microrheology results confirmed that concentration-dependent gelation occurred.
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Affiliation(s)
- Larisa C Radu-Wu
- Departments of Bioengineering and of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84112, USA
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38
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Peng X, Karan S, Ichinose I. Ultrathin nanofibrous films prepared from cadmium hydroxide nanostrands and anionic surfactants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:8514-8518. [PMID: 19284779 DOI: 10.1021/la8040693] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We developed a simple fabrication method of ultrathin nanofibrous films from the dispersion of cadmium hydroxide nanostrands and anionic surfactants. The nanostrands were prepared in a dilute aqueous solution of cadmium chloride by using 2-aminoethanol. They were highly positively charged and gave bundlelike fibers upon mixing an aqueous solution of anionic surfactant. The nanostrand/surfactant composite fibers were filtered on an inorganic membrane filter. The resultant nanofibrous film was very uniform in the area of a few centimeters square when the thickness was not less than 60 nm. The films obtained with sodium tetradecyl sulfate (STS) had a composition close to the electroneutral complex, [Cd37(OH)68(H2O)n] x 6(STS), as confirmed by energy dispersive X-ray analysis. They were water-repellent with a contact angle of 117 degrees, and the value slightly decreased with the alkyl chain length of anionic surfactants. Ultrathin nanofibrous films were stable enough to be used for ultrafiltration at pressure difference of 90 kPa. We could effectively separate Au nanoparticles of 40 nm at an extremely high filtration rate of 14000 L/(h m2 bar).
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Affiliation(s)
- Xinsheng Peng
- Organic Nanomaterials Center, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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39
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Castelletto V, Hamley IW. Self assembly of a model amphiphilic phenylalanine peptide/polyethylene glycol block copolymer in aqueous solution. Biophys Chem 2009; 141:169-74. [PMID: 19232813 DOI: 10.1016/j.bpc.2009.01.008] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2008] [Revised: 01/23/2009] [Accepted: 01/23/2009] [Indexed: 11/26/2022]
Abstract
There has been great interest recently in peptide amphiphiles and block copolymers containing biomimetic peptide sequences due to applications in bionanotechnology. We investigate the self-assembly of the peptide-PEG amphiphile FFFF-PEG5000 containing the hydrophobic sequence of four phenylalanine residues conjugated to PEG of molar mass 5000. This serves as a simple model peptide amphiphile. At very low concentration, association of hydrophobic aromatic phenylalanine residues occurs, as revealed by circular dichroism and UV/vis fluorescence experiments. A critical aggregation concentration associated with the formation of hydrophobic domains is determined through pyrene fluorescence assays. At higher concentration, defined beta-sheets develop as revealed by FTIR spectroscopy and X-ray diffraction. Transmission electron microscopy reveals self-assembled straight fibril structures. These are much shorter than those observed for amyloid peptides, the finite length may be set by the end cap energy due to the hydrophobicity of phenylalanine. The combination of these techniques points to different aggregation processes depending on concentration. Hydrophobic association into irregular aggregates occurs at low concentration, well-developed beta-sheets only developing at higher concentration. Drying of FFFF-PEG5000 solutions leads to crystallization of PEG, as confirmed by polarized optical microscopy (POM), FTIR and X-ray diffraction (XRD). PEG crystallization does not disrupt local beta-sheet structure (as indicated by FTIR and XRD). However on longer lengthscales the beta-sheet fibrillar structure is perturbed because spherulites from PEG crystallization are observed by POM.
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40
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Muenter AH, Hentschel J, Börner HG, Brezesinski G. Characterization of peptide-guided polymer assembly at the air/water interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:3306-3316. [PMID: 18290677 DOI: 10.1021/la701909m] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
An organo-soluble, peptide-polymer conjugate that combines poly(n-butyl acrylate) with a beta-sheet-forming peptide is spread at the water surface to investigate peptide-guided self-assembly in a two-dimensional environment. Single layers of the conjugate are studied to gain information on the packing, orientation, and structure of the conjugate molecules using standard monolayer techniques: isotherms, grazing incidence X-ray diffraction (GIXD), and infrared reflection absorption spectroscopy (IRRAS). At all conditions studied, the stabilizing beta-sheet network consists of antiparallel beta-sheets oriented parallel to the air/water interface. The incorporation of temporary switch defects in the peptide segment enables beta-sheet assembly to be triggered at different packing densities. Stable monolayers, with low compressibilities similar to peptide monolayers, form when beta-sheet assembly occurs in monolayers that contain closely packed conjugate molecules. Langmuir-Schaefer transfer of the switched monolayer seeded with 1/1000 part stearic acid results in a transferred monolayer containing ordered domains with 7 nm wide stripes, a width in agreement with the end-to-end distance of the conjugate molecule. In this interfacial system, high packing densities and a hydrophobic seed molecule play an important role in beta-sheet network and structure formation. Both effects likely direct the highly ordered beta-sheet structure because of beta-strand prealignment. Insights gained from self-assembly in this system can be applied to peptide aggregation mechanisms in more complex interfacial environments.
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Affiliation(s)
- Annabel H Muenter
- Max Planck Institute of Colloids and Interfaces, MPI KG Golm, D-14424 Potsdam, Germany.
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41
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Design, synthesis, and biological evaluation of glycine-based molecular tongs as inhibitors of Abeta1-40 aggregation in vitro. Bioorg Med Chem 2008; 16:4810-22. [PMID: 18406152 DOI: 10.1016/j.bmc.2008.03.052] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2008] [Revised: 03/13/2008] [Accepted: 03/20/2008] [Indexed: 11/21/2022]
Abstract
A series of N-terminus benzamides of glycine-based symmetric peptides, linked to m-xylylenediamine and 3,4'-oxydianiline spacers, were prepared and tested as inhibitors of beta-amyloid peptide Abeta(1-40) aggregation in vitro. Compounds with good anti-aggregating activity were detected. Polyphenolic amides showed the highest anti-aggregating activity, with IC(50) values in the micromolar range. Structure-activity relationships suggested that pi-pi stacking and hydrogen-bonding interactions play a key role in the inhibition of Abeta(1-40) self-assembly leading to amyloid fibrils.
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Abstract
The fibrillization of peptides is relevant to many diseases based on the deposition of amyloids. The formation of fibrils is being intensively studied, especially in terms of nanotechnology applications, where fibrillar peptide hydrogels are used for cell scaffolds, as supports for functional and responsive biomaterials, biosensors, and nanowires. This Review is concerned with fundamental aspects of the self-assembly of peptides into fibrils, and discusses both natural amyloid-forming peptides and synthetic materials, including peptide fragments, copolymers, and amphiphiles.
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Affiliation(s)
- Ian W Hamley
- Department of Chemistry, University of Reading, Reading, Berkshire RG6 6AD, UK.
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43
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Demirel AL, Meyer M, Schlaad H. Formation of polyamide nanofibers by directional crystallization in aqueous solution. Angew Chem Int Ed Engl 2008; 46:8622-4. [PMID: 17907260 DOI: 10.1002/anie.200703486] [Citation(s) in RCA: 106] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- A Levent Demirel
- Chemistry Department, Koç University, Rumelifeneri Yolu, Sariyer 34450, Istanbul, Turkey.
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44
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Demirel A, Meyer M, Schlaad H. Formation of Polyamide Nanofibers by Directional Crystallization in Aqueous Solution. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200703486] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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45
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46
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Meijer JT, Henckens MJAG, Minten IJ, Löwik DWPM, van Hest JCM. Disassembling peptide-based fibres by switching the hydrophobic-hydrophilic balance. SOFT MATTER 2007; 3:1135-1137. [PMID: 32900034 DOI: 10.1039/b708847g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Amyloid-like model peptides, modified on the N-terminus with an alkyl tail and on the C-terminus with a PEG chain, yielded fibres that were susceptible to triggered disassembly by removal of the alkyl chain, which affected the hydrophobic-hydrophilic balance.
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