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Yunoki S, Mogi A, Mizuno K, Nagakawa Y, Hiraoka Y. Plasticizer-gelatin mixed solutions as skin protection materials with flexible-film-forming capability. Heliyon 2024; 10:e25441. [PMID: 38352760 PMCID: PMC10862670 DOI: 10.1016/j.heliyon.2024.e25441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 01/18/2024] [Accepted: 01/26/2024] [Indexed: 02/16/2024] Open
Abstract
To demonstrate the feasibility of plasticizer-gelatin solutions as novel skin protection materials from a physical aspect, we evaluated the rheological properties of the solutions and the mechanical properties and textures of their dried sheets and films. Three types of sugars and polyols were employed as organic plasticizers and mixed with gelatin in solutions at plasticizer/gelatin weight ratios of 0.13-1.67. The plasticizers minimally affected the viscosities and gelation temperatures of the gelatin solutions, but they remarkably softened dried gelatin sheets, except for propylene glycol. Glycerol exhibited the best plasticizing effects, but the sheets obtained using glycerol showed tacky textures. Preliminary investigations on the film-forming properties of the solutions on the human skin showed that the fructose-gelatin solution at a weight ratio of 1.0 formed a flexible thin film with a texture and mechanical properties similar to those of a commercially available polyurethane-based flexible film dressing. In terms of physical properties, we conclude that the fructose-gelatin solution has potential as a skin protection material that transforms from a solution to a film on the skin.
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Affiliation(s)
- Shunji Yunoki
- Institute for the Promotion of Business-Regional Collaboration, Hokkaido University, Kita-21, Nishi-11, Kita-ku, Sapporo, Hokkaido, 001-0021, Japan
- Biotechnology Group, Tokyo Metropolitan Industrial Technology Research Institute (TIRI), 2-4-10 Aomi, Koto-ku, Tokyo, 135-0064, Japan
| | - Asami Mogi
- New Business Planning and Research Section, Shin Nippon Yakugyo Co., Ltd, 15-10 Nihonbashi-Kodenmacho, Chuo-Ku, Tokyo, 103-0001, Japan
| | - Keizo Mizuno
- New Business Planning and Research Section, Shin Nippon Yakugyo Co., Ltd, 15-10 Nihonbashi-Kodenmacho, Chuo-Ku, Tokyo, 103-0001, Japan
| | - Yoshiyasu Nagakawa
- Biotechnology Group, Tokyo Metropolitan Industrial Technology Research Institute (TIRI), 2-4-10 Aomi, Koto-ku, Tokyo, 135-0064, Japan
| | - Yosuke Hiraoka
- Biomedical Department, R&D Center, Nitta Gelatin Inc., 2-22, Futamata, Yao City, Osaka, 581-0024, Japan
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2
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Gahlawat S, Nanda V, Shreiber DI. Designing collagens to shed light on the multi-scale structure-function mapping of matrix disorders. Matrix Biol Plus 2024; 21:100139. [PMID: 38186852 PMCID: PMC10765305 DOI: 10.1016/j.mbplus.2023.100139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/29/2023] [Accepted: 12/09/2023] [Indexed: 01/09/2024] Open
Abstract
Collagens are the most abundant structural proteins in the extracellular matrix of animals and play crucial roles in maintaining the structural integrity and mechanical properties of tissues and organs while mediating important biological processes. Fibrillar collagens have a unique triple helix structure with a characteristic repeating sequence of (Gly-X-Y)n. Variations within the repetitive sequence can cause misfolding of the triple helix, resulting in heritable connective tissue disorders. The most common variations are single-point missense mutations that lead to the substitution of a glycine residue with a bulkier amino acid (Gly → X). In this review, we will first discuss the importance of collagen's triple helix structure and how single Gly substitutions can impact its folding, structure, secretion, assembly into higher-order structures, and biological functions. We will review the role of "designer collagens," i.e., synthetic collagen-mimetic peptides and recombinant bacterial collagen as model systems to include Gly → X substitutions observed in collagen disorders and investigate their impact on structure and function utilizing in vitro studies. Lastly, we will explore how computational modeling of collagen peptides, especially molecular and steered molecular dynamics, has been instrumental in probing the effects of Gly substitutions on structure, receptor binding, and mechanical stability across multiple length scales.
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Affiliation(s)
- Sonal Gahlawat
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Vikas Nanda
- Department of Biochemistry and Molecular Biology, Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
- Center for Advanced Biotechnology and Medicine, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - David I. Shreiber
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
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3
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Amason AC, Meduri A, Rao S, Leonick N, Subramaniam B, Samuel J, Gross RA. Bacterial Cellulose Cultivations Containing Gelatin Form Tunable, Highly Ordered, Laminae Structures with Fourfold Enhanced Productivity. ACS OMEGA 2022; 7:47709-47719. [PMID: 36591152 PMCID: PMC9798505 DOI: 10.1021/acsomega.2c04820] [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: 07/29/2022] [Accepted: 10/28/2022] [Indexed: 06/17/2023]
Abstract
Manipulation of bacterial cellulose (BC) morphology is important to tune BC properties to meet specific application requirements. In this study, gelatin was added to cultivation media at 0.1-7.5 wt %. After cultivations, gelatin was removed from the BC matrix, and its effects on BC matrix characteristics and fermentation production efficiency were determined. Higher contents of gelatin in cultivation media (up to 5%) resulted in BC that, from scanning electron microscopy observations, had larger pore sizes and formation of a lamina morphology that was highly unidirectional. Crystallinity remained unchanged between 0.1 and 5 wt % gelatin concentrations (92-95%); however, it decreased to 86% at a gelatin concentration of 7.5 wt %. Mechanical properties showed a positive trend as both the specific modulus and specific strength values increased as the gelatin concentration increased to 5 wt %. A breakdown in the ordered structure of the BC matrix occurs at 7.5 wt % gelatin, with corresponding decreases in the specific modulus and specific strength of the BC. The productivity increased by almost 4-fold relative to the control, reaching 1.64 g·L-1h-1 at the 2.5 wt % gelatin content. Also, the water holding capacity increased by 3-fold relative to the control, reaching 306.6 g of water per g BC at the 5.0 wt % gelatin content. The changes observed in these BC metrics can be explained based on literature findings associated with the formation of gelatin aggregates in the cultivation media and an increase in gel stiffness seen at higher media gelatin concentrations. Overall, this work provides a roadmap for manipulating BC properties while creating highly organized lamina morphologies.
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Affiliation(s)
- Anna-Christina Amason
- Center
for Biotechnology and Interdisciplinary Studies, Department of Biological
Sciences, Rensselaer Polytechnic Institute, 1623 15th Street, Troy, New York 12180, United States
- New
York State Center for Polymer Synthesis, Department of Chemistry and
Chemical Biology, Rensselaer Polytechnic
Institute, 110 8th Street, Troy, New
York 12180, United
States
| | - Aditya Meduri
- Center
for Biotechnology and Interdisciplinary Studies, Department of Biological
Sciences, Rensselaer Polytechnic Institute, 1623 15th Street, Troy, New York 12180, United States
- Jonsson
Engineering Center, Department of Mechanical Aerospace and Nuclear
Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180, United States
| | - Shivani Rao
- Center
for Biotechnology and Interdisciplinary Studies, Department of Biological
Sciences, Rensselaer Polytechnic Institute, 1623 15th Street, Troy, New York 12180, United States
- New
York State Center for Polymer Synthesis, Department of Chemistry and
Chemical Biology, Rensselaer Polytechnic
Institute, 110 8th Street, Troy, New
York 12180, United
States
| | - Nicole Leonick
- Center
for Biotechnology and Interdisciplinary Studies, Department of Biological
Sciences, Rensselaer Polytechnic Institute, 1623 15th Street, Troy, New York 12180, United States
- New
York State Center for Polymer Synthesis, Department of Chemistry and
Chemical Biology, Rensselaer Polytechnic
Institute, 110 8th Street, Troy, New
York 12180, United
States
| | - Bhagyashree Subramaniam
- Center
for Biotechnology and Interdisciplinary Studies, Department of Biological
Sciences, Rensselaer Polytechnic Institute, 1623 15th Street, Troy, New York 12180, United States
- New
York State Center for Polymer Synthesis, Department of Chemistry and
Chemical Biology, Rensselaer Polytechnic
Institute, 110 8th Street, Troy, New
York 12180, United
States
| | - Johnson Samuel
- Center
for Biotechnology and Interdisciplinary Studies, Department of Biological
Sciences, Rensselaer Polytechnic Institute, 1623 15th Street, Troy, New York 12180, United States
- Jonsson
Engineering Center, Department of Mechanical Aerospace and Nuclear
Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180, United States
| | - Richard A. Gross
- Center
for Biotechnology and Interdisciplinary Studies, Department of Biological
Sciences, Rensselaer Polytechnic Institute, 1623 15th Street, Troy, New York 12180, United States
- New
York State Center for Polymer Synthesis, Department of Chemistry and
Chemical Biology, Rensselaer Polytechnic
Institute, 110 8th Street, Troy, New
York 12180, United
States
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4
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Buscaglia M, Guérard F, Roquefort P, Aubry T, Fauchon M, Toueix Y, Stiger-Pouvreau V, Hellio C, Le Blay G. Mechanically Enhanced Salmo salar Gelatin by Enzymatic Cross-linking: Premise of a Bioinspired Material for Food Packaging, Cosmetics, and Biomedical Applications. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2022; 24:801-819. [PMID: 35915285 DOI: 10.1007/s10126-022-10150-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
Marine animal by-products of the food industry are a great source of valuable biomolecules. Skins and bones are rich in collagen, a protein with various applications in food, cosmetic, healthcare, and medical industries in its native form or partially hydrolyzed (gelatin). Salmon gelatin is a candidate of interest due to its high biomass production available through salmon consumption, its biodegradability, and its high biocompatibility. However, its low mechanical and thermal properties can be an obstacle for various applications requiring cohesive material. Thus, gelatin modification by cross-linking is necessary. Enzymatic cross-linking by microbial transglutaminase (MTG) is preferred to chemical cross-linking to avoid the formation of potentially cytotoxic residues. In this work, the potential of salmon skin gelatin was investigated, in a comparative study with porcine gelatin, and an enzymatic versus chemical cross-linking analysis. For this purpose, the two cross-linking methods were applied to produce three-dimensional, porous, and mechanically reinforced hydrogels and sponges with different MTG ratios (2%, 5%, and 10% w/w gelatin). Their biochemical, rheological, and structural properties were characterized, as well as the stability of the material, including the degree of syneresis and the water-binding capacity. The results showed that gelatin enzymatically cross-linked produced material with high cross-linking densities over 70% of free amines. The MTG addition seemed to play a crucial role, as shown by the increase in mechanical and thermal resistances with the production of a cohesive material stable above 40 °C for at least 7 days and comparable to porcine and chemically cross-linked gelatins. Two prototypes were obtained with similar thermal resistances but different microstructures and viscoelastic properties, due to different formation dynamics of the covalent network. Considering these results, the enzymatically cross-linked salmon gelatin is a relevant candidate as a biopolymer for the production of matrix for a wide range of biotechnological applications such as food packaging, cosmetic patch, wound healing dressing, or tissue substitute.
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Affiliation(s)
- Manon Buscaglia
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzané, France
| | - Fabienne Guérard
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzané, France
| | - Philippe Roquefort
- UMR CNRS 6027, IRDL, Université de Bretagne Occidentale, 29200, Brest, France
| | - Thierry Aubry
- UMR CNRS 6027, IRDL, Université de Bretagne Occidentale, 29200, Brest, France
| | - Marilyne Fauchon
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzané, France
| | - Yannick Toueix
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzané, France
| | | | - Claire Hellio
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzané, France
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5
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Walker M, Luo J, Pringle EW, Cantini M. ChondroGELesis: Hydrogels to harness the chondrogenic potential of stem cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 121:111822. [PMID: 33579465 DOI: 10.1016/j.msec.2020.111822] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/14/2020] [Accepted: 12/16/2020] [Indexed: 01/01/2023]
Abstract
The extracellular matrix is a highly complex microenvironment, whose various components converge to regulate cell fate. Hydrogels, as water-swollen polymer networks composed by synthetic or natural materials, are ideal candidates to create biologically active substrates that mimic these matrices and target cell behaviour for a desired tissue engineering application. Indeed, the ability to tune their mechanical, structural, and biochemical properties provides a framework to recapitulate native tissues. This review explores how hydrogels have been engineered to harness the chondrogenic response of stem cells for the repair of damaged cartilage tissue. The signalling processes involved in hydrogel-driven chondrogenesis are also discussed, identifying critical pathways that should be taken into account during hydrogel design.
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Affiliation(s)
- Matthew Walker
- Centre for the Cellular Microenvironment, James Watt School of Engineering, University of Glasgow, UK
| | - Jiajun Luo
- Centre for the Cellular Microenvironment, James Watt School of Engineering, University of Glasgow, UK
| | - Eonan William Pringle
- Centre for the Cellular Microenvironment, James Watt School of Engineering, University of Glasgow, UK
| | - Marco Cantini
- Centre for the Cellular Microenvironment, James Watt School of Engineering, University of Glasgow, UK.
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6
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Bello AB, Kim D, Kim D, Park H, Lee SH. Engineering and Functionalization of Gelatin Biomaterials: From Cell Culture to Medical Applications. TISSUE ENGINEERING PART B-REVIEWS 2020; 26:164-180. [PMID: 31910095 DOI: 10.1089/ten.teb.2019.0256] [Citation(s) in RCA: 250] [Impact Index Per Article: 62.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Health care and medicine were revolutionized in recent years by the development of biomaterials, such as stents, implants, personalized drug delivery systems, engineered grafts, cell sheets, and other transplantable materials. These materials not only support the growth of cells before transplantation but also serve as replacements for damaged tissues in vivo. Among the various biomaterials available, those made from natural biological sources such as extracellular proteins (collagen, fibronectin, laminin) have shown significant benefits, and thus are widely used. However, routine biomaterial-based research requires copious quantities of proteins and the use of pure and intact extracellular proteins could be highly cost ineffective. Gelatin is a molecular derivative of collagen obtained through the irreversible denaturation of collagen proteins. Gelatin shares a very close molecular structure and function with collagen and thus is often used in cell and tissue culture to replace collagen for biomaterial purposes. Recent technological advancements such as additive manufacturing, rapid prototyping, and three-dimensional printing, in general, have resulted in great strides toward the generation of functional gelatin-based materials for medical purposes. In this review, the structural and molecular similarities of gelatin to other extracellular matrix proteins are compared and analyzed. Current strategies for gelatin crosslinking and production are described and recent applications of gelatin-based biomaterials in cell culture and tissue regeneration are discussed. Finally, recent improvements in gelatin-based biomaterials for medical applications and future directions are elaborated. Impact statement In this study, we described gelatin's biochemical properties and compared its advantages and drawbacks over other extracellular matrix proteins and polymers used for biomaterial application. We also described how gelatin can be used with other polymers in creating gelatin composite materials that have enhanced mechanical properties, increased biocompatibility, and boosted bioactivity, maximizing its benefits for biomedical purposes. The article is relevant, as it discussed not only the chemistry of gelatin, but also listed the current techniques in gelatin/biomaterial manufacturing and described the most recent trends in gelatin-based biomaterials for biomedical applications.
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Affiliation(s)
- Alvin Bacero Bello
- School of Integrative Engineering, Chung-Ang University, Seoul, Republic of Korea.,Department of Biomedical Science, Dongguk University, Gyeonggi, Republic of Korea
| | - Deogil Kim
- Department of Biomedical Science, CHA University, Seongnam-Si, Republic of Korea
| | - Dohyun Kim
- Department of Biomedical Science, Dongguk University, Gyeonggi, Republic of Korea
| | - Hansoo Park
- School of Integrative Engineering, Chung-Ang University, Seoul, Republic of Korea
| | - Soo-Hong Lee
- Department of Biomedical Science, Dongguk University, Gyeonggi, Republic of Korea
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7
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Varanko A, Saha S, Chilkoti A. Recent trends in protein and peptide-based biomaterials for advanced drug delivery. Adv Drug Deliv Rev 2020; 156:133-187. [PMID: 32871201 PMCID: PMC7456198 DOI: 10.1016/j.addr.2020.08.008] [Citation(s) in RCA: 130] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/14/2020] [Accepted: 08/14/2020] [Indexed: 02/07/2023]
Abstract
Engineering protein and peptide-based materials for drug delivery applications has gained momentum due to their biochemical and biophysical properties over synthetic materials, including biocompatibility, ease of synthesis and purification, tunability, scalability, and lack of toxicity. These biomolecules have been used to develop a host of drug delivery platforms, such as peptide- and protein-drug conjugates, injectable particles, and drug depots to deliver small molecule drugs, therapeutic proteins, and nucleic acids. In this review, we discuss progress in engineering the architecture and biological functions of peptide-based biomaterials -naturally derived, chemically synthesized and recombinant- with a focus on the molecular features that modulate their structure-function relationships for drug delivery.
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Affiliation(s)
| | | | - Ashutosh Chilkoti
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA.
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8
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Hydrolysed Collagen from Sheepskins as a Source of Functional Peptides with Antioxidant Activity. Int J Mol Sci 2019; 20:ijms20163931. [PMID: 31412541 PMCID: PMC6719941 DOI: 10.3390/ijms20163931] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 07/23/2019] [Accepted: 07/29/2019] [Indexed: 12/12/2022] Open
Abstract
The extraction and enzymatic hydrolysis of collagen from sheepskins at different times of hydrolysis (0, 10, 15, 20, 30 min, 1, 2, 3 and 4 h) were investigated in terms of amino acid content (hydroxyproline), isoelectric point, molecular weight (Mw) by sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) method, viscosity, Fourier-transform infrared (FTIR) spectroscopy, antioxidant capacity by 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assays, thermal properties (Differential Scanning Calorimetry) and morphology by scanning electron microscopy (SEM) technique. The kinetics of hydrolysis showed an increase in the protein and hydroxyproline concentration as the hydrolysis time increased to 4 h. FTIR spectra allowed us to identify the functional groups of hydrolysed collagen (HC) in the amide I region for collagen. The isoelectric point shifted to lower values compared to the native collagen precursor. The change in molecular weight and viscosity from time 0 min to 4 h promoted important antioxidant activity in the resulting HC. The lower the Mw, the greater the ability to donate an electron or hydrogen to stabilize radicals. From the SEM images it was evident that HC after 2 h had a porous and spongy structure. These results suggest that HC could be a good alternative to replace HC from typical sources like pigs, cows and fish.
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Duthen S, Rochat C, Kleiber D, Violleau F, Daydé J, Raynaud C, Levasseur-Garcia C. Physicochemical characterization and study of molar mass of industrial gelatins by AsFlFFF-UV/MALS and chemometric approach. PLoS One 2018; 13:e0203595. [PMID: 30300343 PMCID: PMC6177121 DOI: 10.1371/journal.pone.0203595] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 08/23/2018] [Indexed: 11/19/2022] Open
Abstract
Industrial gelatins have different physicochemical properties that mainly depend of the raw materials origin and the extraction conditions. These properties are closely related to the molar mass distribution of these gelatins. Several methods exist to characterize molar mass distribution of polymer, including the Asymmetrical Flow Field Flow Fractionation method. The goal of this study is to analyze the relationship between physicochemical properties and the gelatins molar mass distribution obtained by Asymmetrical Flow Field Flow Fractionation. In this study, 49 gelatins samples extracted from pig skin are characterized in terms of gel strength and viscosity and their molar mass distribution are analyzed by Asymmetrical Flow Field Flow Fractionation coupled to an Ultraviolet and Multi Angle Light Scattering detector. This analytical method is an interesting tool for studying, simultaneously, the primary chains and the high-molar-mass fraction corresponding to the polymer chains. Correlation analysis between molar mass distribution data from the different fractions highlights the importance of high molar mass polymer chains to explain the gel strength and viscosity of gelatins. These results are confirmed by an additional chemometric approach based on the UV absorbance of gelatin fractograms to predict gel strength (r2Cal = 0.85) and viscosity (r2Cal = 0.79).
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Affiliation(s)
- Simon Duthen
- Laboratoire de Physiologie, Pathologie et Génétique Végétales (PPGV), Université de Toulouse, INP- PURPAN, Toulouse, France
- Laboratoire de Chimie Agro-industrielle (LCA), Université de Toulouse, INRA, INPT, INP-Purpan, Toulouse, France
| | - Chloé Rochat
- Laboratoire de Physiologie, Pathologie et Génétique Végétales (PPGV), Université de Toulouse, INP- PURPAN, Toulouse, France
| | - Didier Kleiber
- Laboratoire de Physiologie, Pathologie et Génétique Végétales (PPGV), Université de Toulouse, INP- PURPAN, Toulouse, France
| | - Frederic Violleau
- Laboratoire de Physiologie, Pathologie et Génétique Végétales (PPGV), Université de Toulouse, INP- PURPAN, Toulouse, France
- Laboratoire de Chimie Agro-industrielle (LCA), Université de Toulouse, INRA, INPT, INP-Purpan, Toulouse, France
| | - Jean Daydé
- Laboratoire de Physiologie, Pathologie et Génétique Végétales (PPGV), Université de Toulouse, INP- PURPAN, Toulouse, France
| | - Christine Raynaud
- Laboratoire de Chimie Agro-industrielle (LCA), Université de Toulouse, INRA, INPT, INP-Purpan, Toulouse, France
- Centre d’Application et de Traitement des Agroressources (CATAR), INPT, Toulouse, France
| | - Cecile Levasseur-Garcia
- Laboratoire de Physiologie, Pathologie et Génétique Végétales (PPGV), Université de Toulouse, INP- PURPAN, Toulouse, France
- Laboratoire de Chimie Agro-industrielle (LCA), Université de Toulouse, INRA, INPT, INP-Purpan, Toulouse, France
- * E-mail:
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10
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Portier F, Teulon C, Nowacka-Perrin A, Guenneau F, Schanne-Klein MC, Mosser G. Stabilization of Collagen Fibrils by Gelatin Addition: A Study of Collagen/Gelatin Dense Phases. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12916-12925. [PMID: 29087724 DOI: 10.1021/acs.langmuir.7b02142] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Collagen and its denatured form, gelatin, are biopolymers of fundamental interest in numerous fields ranging from living tissues to biomaterials, food, and cosmetics. This study aims at characterizing mixtures of those biopolymers at high concentrations (up to 100 mg·mL-1) at which collagen has mesogenic properties. We use a structural approach combining polarization-resolved multiphoton microscopy, polarized light microscopy, magnetic resonance imaging, and transmission electron microscopy to analyze gelatin and collagen/gelatin dense phases in their sol and gel states from the macroscopic to the microscopic scale. We first report the formation of a lyotropic crystal phase of gelatin A and show that gelatin must structure itself in particles to become mesogenic. We demonstrate that mixtures of collagen and gelatin phase segregate, preserving the setting of the pure collagen mesophase at a gelatin ratio of up to 20% and generating a biphasic fractal sample at all tested ratios. Moreover, differential scanning calorimetric analysis shows that each protein separates into two populations. Both populations of gelatins are stabilized by the presence of collagen, whereas only one population of collagen molecules is stabilized by the presence of gelatin, most probably those at the interface of the fibrillated microdomains and of the gelatin phase. Although further studies are needed to fully understand the involved mechanism, these new data should have a direct impact on the bioengineering of those two biopolymers.
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Affiliation(s)
- François Portier
- Sorbonne Universités, UPMC Université Paris 06, CNRS, Collège de France, LCMCP , F-75005 Paris, France
| | - Claire Teulon
- LOB, Ecole Polytechnique, CNRS, Inserm U1182, Université Paris-Saclay , F-91128 Palaiseau, France
| | - Agnieszka Nowacka-Perrin
- Sorbonne Universités, UPMC Université Paris 06, CNRS, Collège de France, LCMCP , F-75005 Paris, France
| | - Flavien Guenneau
- Sorbonne Universités, UPMC Université Paris 06, CNRS, Collège de France, LCMCP , F-75005 Paris, France
| | | | - Gervaise Mosser
- Sorbonne Universités, UPMC Université Paris 06, CNRS, Collège de France, LCMCP , F-75005 Paris, France
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11
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Jianlong Z, Congde Q, Weiliang L, Qinze L. Gelation, Network Structure and Properties of Physically Crosslinked Gelatin Gels: Effect of Salt Cation Valence. J MACROMOL SCI B 2017. [DOI: 10.1080/00222348.2017.1381000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Zhang Jianlong
- School of Materials Science and Engineering, Qilu University of Technology, Jinan, PR China
| | - Qiao Congde
- School of Materials Science and Engineering, Qilu University of Technology, Jinan, PR China
| | - Liu Weiliang
- School of Materials Science and Engineering, Qilu University of Technology, Jinan, PR China
| | - Liu Qinze
- School of Materials Science and Engineering, Qilu University of Technology, Jinan, PR China
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12
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Okawa Y, Obata T, Kobayashi H, Ohno T. Influence of the degree of freedom in molecular motion in gelatin gelation. THE IMAGING SCIENCE JOURNAL 2016. [DOI: 10.1080/13682199.2000.11784360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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14
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Wisotzki EI, Friedrich RP, Weidt A, Alexiou C, Mayr SG, Zink M. Cellular Response to Reagent-Free Electron-Irradiated Gelatin Hydrogels. Macromol Biosci 2016; 16:914-24. [DOI: 10.1002/mabi.201500408] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 01/29/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Emilia I. Wisotzki
- Leibniz Institute of Surface Modification (IOM); Permoserstrasse 15 04318 Leipzig Germany
- Faculty of Physics and Earth Sciences; Leipzig University; Linnéstrasse 5 04103 Leipzig Germany
| | - Ralf P. Friedrich
- ENT Clinic; Section of Experimental Oncology and Nanomedicine (SEON); Else Kröner-Fresenius-Stiftung Professorship; University Hospital Erlangen; Erlangen Germany
| | - Astrid Weidt
- Faculty of Physics and Earth Sciences; Leipzig University; Linnéstrasse 5 04103 Leipzig Germany
| | - Christoph Alexiou
- ENT Clinic; Section of Experimental Oncology and Nanomedicine (SEON); Else Kröner-Fresenius-Stiftung Professorship; University Hospital Erlangen; Erlangen Germany
| | - Stefan G. Mayr
- Leibniz Institute of Surface Modification (IOM); Permoserstrasse 15 04318 Leipzig Germany
- Faculty of Physics and Earth Sciences; Leipzig University; Linnéstrasse 5 04103 Leipzig Germany
| | - Mareike Zink
- Faculty of Physics and Earth Sciences; Leipzig University; Linnéstrasse 5 04103 Leipzig Germany
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15
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Bellini F, Alberini I, Ferreyra MG, Rintoul I. Absolute determination of the gelling point of gelatin under quasi-thermodynamic equilibrium. J Food Sci 2015; 80:C935-41. [PMID: 25832543 DOI: 10.1111/1750-3841.12822] [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: 11/10/2014] [Accepted: 01/17/2015] [Indexed: 11/29/2022]
Abstract
Thermodynamic studies on phase transformation of biopolymers in solution are useful to understand their nature and to evaluate their technological potentials. Thermodynamic studies should be conducted avoiding time-related phenomena. This condition is not easily achieved in hydrophilic biopolymers. In this contribution, the simultaneous effects of pH, salt concentration, and cooling rate (Cr) on the folding from random coil to triple helical collagen-like structures of gelatin were systematically studied. The phase transformation temperature at the absolute invariant condition of Cr = 0 °C/min (T(T)Cr=0) ) is introduced as a conceptual parameter to study phase transformations in biopolymers under quasi-thermodynamic equilibrium and avoiding interferences coming from time-related phenomena. Experimental phase diagrams obtained at different Cr are presented. The T(T)(Cr=0) compared with pH and TT(Cr=0) compared with [NaCl] diagram allowed to explore the transformation process at Cr = 0 °C/min. The results were explained by electrostatic interactions between the biopolymers and its solvation milieu.
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Affiliation(s)
- Franco Bellini
- Inst. de Desarrollo Tecnológico para la Industria Química, Univ. Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, CP-3000, Santa Fe, Argentina
| | - Ivana Alberini
- Inst. de Desarrollo Tecnológico para la Industria Química, Univ. Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, CP-3000, Santa Fe, Argentina
| | - María G Ferreyra
- Inst. de Desarrollo Tecnológico para la Industria Química, Univ. Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, CP-3000, Santa Fe, Argentina
| | - Ignacio Rintoul
- Inst. de Desarrollo Tecnológico para la Industria Química, Univ. Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas, CP-3000, Santa Fe, Argentina
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16
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Souguir H, Ronsin O, Caroli C, Baumberger T. Two-step build-up of a thermoreversible polymer network: From early local to late collective dynamics. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 91:042305. [PMID: 25974489 DOI: 10.1103/physreve.91.042305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Indexed: 06/04/2023]
Abstract
We probe the mechanisms at work in the build-up of thermoreversible gel networks, with the help of hybrid gelatin gels containing a controlled density of irreversible, covalent crosslinks (CLs), which we quench below the physical gelation temperature. The detailed analysis of the dependence on covalent crosslink density of both the shear modulus and optical activity evolutions with time after quench enables us to identify two stages of the physical gelation process, separated by a temperature-dependent crossover modulus: (i) an early nucleation regime during which rearrangements of the triple-helix CLs play a negligible role, and (ii) a late, logarithmic aging one, which is preserved, though slowed down, in the presence of irreversible CLs. We show that aging is fully controlled by rearrangements and discuss the implication of our results in terms of the switch from an early, local dynamics to a late, cooperative long-range one.
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Affiliation(s)
- H Souguir
- Institut des Nanosciences de Paris (INSP), Université Paris 6, UMR CNRS 7588, 2 place Jussieu, 75005 Paris, France
| | - O Ronsin
- Institut des Nanosciences de Paris (INSP), Université Paris 6, UMR CNRS 7588, 2 place Jussieu, 75005 Paris, France
| | - C Caroli
- Institut des Nanosciences de Paris (INSP), Université Paris 6, UMR CNRS 7588, 2 place Jussieu, 75005 Paris, France
| | - T Baumberger
- Institut des Nanosciences de Paris (INSP), Université Paris 6, UMR CNRS 7588, 2 place Jussieu, 75005 Paris, France
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17
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Sow LC, Yang H. Effects of salt and sugar addition on the physicochemical properties and nanostructure of fish gelatin. Food Hydrocoll 2015. [DOI: 10.1016/j.foodhyd.2014.10.021] [Citation(s) in RCA: 126] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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Park J, Park M, Nam G, Lee JS, Cho J. All-solid-state cable-type flexible zinc-air battery. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:1396-401. [PMID: 25532853 DOI: 10.1002/adma.201404639] [Citation(s) in RCA: 148] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 11/08/2014] [Indexed: 05/24/2023]
Abstract
A cable-type flexible Zn-air battery with a spiral zinc anode, gel polymer electrolyte (GPE), and air cathode coated on a nonprecious metal catalyst is designed in order to extend its application area toward wearable electronic devices.
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Affiliation(s)
- Joohyuk Park
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea
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19
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Duconseille A, Astruc T, Quintana N, Meersman F, Sante-Lhoutellier V. Gelatin structure and composition linked to hard capsule dissolution: A review. Food Hydrocoll 2015. [DOI: 10.1016/j.foodhyd.2014.06.006] [Citation(s) in RCA: 227] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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20
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Enescu D, Frache A, Geobaldo F. Formation and oxygen diffusion barrier properties of fish gelatin/natural sodium montmorillonite clay self-assembled multilayers onto the biopolyester surface. RSC Adv 2015. [DOI: 10.1039/c5ra11283d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
In order to expand the application of bio-derived polymers it is imperative that the issues related to their poor gas barrier properties be addressed.
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Affiliation(s)
- Daniela Enescu
- The Centre for Research on Adaptive Nanostructure and Nanodevice, CRANN
- Trinity College
- Dublin 2
- Ireland
| | - Alberto Frache
- Department of Applied Science and Technology
- Polytechnic of Turin
- Turin
- Italy
| | - Francesco Geobaldo
- Department of Applied Science and Technology
- Polytechnic of Turin
- Turin
- Italy
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21
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Yanagisawa M, Yamashita Y, Mukai SA, Annaka M, Tokita M. Phase separation in binary polymer solution: Gelatin/Poly(ethylene glycol) system. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2013.12.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Large amplitude oscillatory shear studies on the strain-stiffening behavior of gelatin gels. CHINESE JOURNAL OF POLYMER SCIENCE 2014. [DOI: 10.1007/s10118-015-1559-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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23
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Abstract
We present a novel tunable thermoresponsive gelatin nanogel that shows a volume transition at ∼32 °C. A thermally induced volume reduction of more than 30× is observed due to the helix to random coil transition of gelatin chains confined in the nanogels. The physical process and key factors influencing thermoresponsive properties are investigated using dynamic light scattering (DLS), transmission electron microscopy (TEM), and polarimetry. The thermoresponsive properties of this nanogel can be exploited in the development of new types of stimuli-responsive, biomedically relevant materials based on natural polymers.
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Affiliation(s)
- Sahil Sandesh Gandhi
- Chemical Physics Interdisciplinary
Program and Liquid Crystal Institute, Kent State University, P.O. Box 5190, Kent, Ohio 44242, United States
| | - Huan Yan
- Chemical Physics Interdisciplinary
Program and Liquid Crystal Institute, Kent State University, P.O. Box 5190, Kent, Ohio 44242, United States
| | - Chanjoong Kim
- Chemical Physics Interdisciplinary
Program and Liquid Crystal Institute, Kent State University, P.O. Box 5190, Kent, Ohio 44242, United States
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24
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Sajkiewicz P, Kołbuk D. Electrospinning of gelatin for tissue engineering--molecular conformation as one of the overlooked problems. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 25:2009-22. [PMID: 25357002 DOI: 10.1080/09205063.2014.975392] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Gelatin is one of the most promising materials in tissue engineering as a scaffold component. This biopolymer indicates biocompatibility and bioactivity caused by the existence of specific amino acid sequences, being preferred sites for interactions with cells, with high similarity to natural extracellular matrix. The present paper does not aspire to be a full review of electrospinning of gelatin and gelatin containing nanofibers as scaffolds in tissue engineering. It is focused on the still open question of the role of the higher order structures of gelatin in scaffold's bioactivity/functionality. Gelatin molecules can adopt various conformations depending on temperature, solvent, pH, etc. Our review indicates the potential ways for formation of α-helix conformation during electrospinning and the methods of further structure stabilization. It is intuitively expected that the native α-helix conformation appearing as a result of partial renaturation of gelatin can be beneficial from the viewpoint of bioactivity of scaffolds, providing thus a much cheaper alternative approach as opposed to expensive electrospinning of native collagen.
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Affiliation(s)
- P Sajkiewicz
- a Institute of Fundamental Technological Research , Polish Academy of Sciences , Pawinskiego 5B, 02-106 Warsaw , Poland
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25
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Díaz-Calderón P, Caballero L, Melo F, Enrione J. Molecular configuration of gelatin–water suspensions at low concentration. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2013.12.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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26
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Nam G, Park J, Kim ST, Shin DB, Park N, Kim Y, Lee JS, Cho J. Metal-free Ketjenblack incorporated nitrogen-doped carbon sheets derived from gelatin as oxygen reduction catalysts. NANO LETTERS 2014; 14:1870-1876. [PMID: 24635744 DOI: 10.1021/nl404640n] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Electrocatalysts facilitating oxygen reduction reaction (ORR) are vital components in advanced fuel cells and metal-air batteries. Here we report Ketjenblack incorporated nitrogen-doped carbon sheets derived from gelatin and apply these easily scalable materials as metal-free electrocatalysts for ORR. These carbon nanosheets demonstrate highly comparable catalytic activity for ORR as well as better durability than commercial Vulcan carbon supported Pt catalysts in alkaline media. Physico-chemical characterization and theoretical calculations suggest that proper combination of graphitic and pyridinic nitrogen species with more exposed edge sites effectively facilitates a formation of superoxide, [O2(ad)](-), via one-electron transfer, thus increasing catalytic activities for ORR. Our results demonstrate a novel strategy to expose more nitrogen doped edge sites by irregular stacked small sheets in developing better electrocatalysts for Zn-air batteries. These desirable architectures are embodied by an amphiphlilic gelatin mediated compatible synthetic strategy between hydrophobic carbon and aqueous water.
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Affiliation(s)
- Gyutae Nam
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , 689-798, Ulsan, South Korea
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27
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Qiao C, Cao X. Swelling Behavior of Physically Cross-Linked Gelatin Gels in Varied Salt Solutions. J MACROMOL SCI B 2013. [DOI: 10.1080/00222348.2013.837302] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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28
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Silva CIF, Skrzeszewska PJ, Golinska MD, Werten MWT, Eggink G, de Wolf FA. Tuning of Collagen Triple-Helix Stability in Recombinant Telechelic Polymers. Biomacromolecules 2012; 13:1250-8. [DOI: 10.1021/bm300323q] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Catarina I. F. Silva
- Wageningen UR Food & Biobased Research, Bornse Weilanden 9, NL-6708 WG Wageningen, The Netherlands
- Bioprocess Engineering, Wageningen University, Bomenweg 2, NL-6703 HD Wageningen,
The Netherlands
| | - Paulina J. Skrzeszewska
- Wageningen UR Food & Biobased Research, Bornse Weilanden 9, NL-6708 WG Wageningen, The Netherlands
- Laboratory
of Physical Chemistry
and Colloid Science, Wageningen University, Dreijenplein 6, NL-6703 HB Wageningen, The Netherlands
| | - Monika D. Golinska
- Wageningen UR Food & Biobased Research, Bornse Weilanden 9, NL-6708 WG Wageningen, The Netherlands
- Bioprocess Engineering, Wageningen University, Bomenweg 2, NL-6703 HD Wageningen,
The Netherlands
| | - Marc W. T. Werten
- Wageningen UR Food & Biobased Research, Bornse Weilanden 9, NL-6708 WG Wageningen, The Netherlands
| | - Gerrit Eggink
- Wageningen UR Food & Biobased Research, Bornse Weilanden 9, NL-6708 WG Wageningen, The Netherlands
- Bioprocess Engineering, Wageningen University, Bomenweg 2, NL-6703 HD Wageningen,
The Netherlands
| | - Frits A. de Wolf
- Wageningen UR Food & Biobased Research, Bornse Weilanden 9, NL-6708 WG Wageningen, The Netherlands
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29
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Hwang ES, Brodsky B. Folding delay and structural perturbations caused by type IV collagen natural interruptions and nearby Gly missense mutations. J Biol Chem 2012; 287:4368-75. [PMID: 22179614 PMCID: PMC3281714 DOI: 10.1074/jbc.m111.269084] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Revised: 11/29/2011] [Indexed: 11/06/2022] Open
Abstract
The standard collagen triple helix requires Gly as every third residue in the amino acid sequence, yet all nonfibrillar collagens contain sites where this repeating pattern is interrupted. To explore the effects of such natural interruptions on the triple helix, a 4- or 15-residue sequence from human basement membrane type IV collagen was introduced between (Gly-Xaa-Yaa)(n) domains within a recombinant bacterial collagen. The interruptions had little effect on melting temperature, consistent with the high thermal stability reported for nonfibrillar collagens. Although the 4-residue interruption cannot be accommodated within a standard triple helix, trypsin and thermolysin resistance indicated a tightly packed structure. Central residues of the 15-residue interruption were protease-susceptible, whereas residues near the (Gly-Xaa-Yaa)(n) boundary were resistant, supporting a transition from an alternate conformation to a well packed triple helix. Both interruptions led to a delay in triple-helix folding, with the 15-residue interruption causing slower folding than the 4-residue interruption. These results suggest that propagation through interruptions represents a slow folding step. To clarify the relation between natural interruptions and pathological mutations, a Gly to Ser missense mutation was placed three triplets away from the 4-residue interruption. As a result of this mutation, the 4-residue interruption and nearby triple helix became susceptible to protease digestion, and an additional folding delay was observed. Because Gly missense mutations that cause disease are often located near natural interruptions, structural and folding perturbations arising from such proximity could be a factor in collagen genetic diseases.
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Affiliation(s)
- Eileen S. Hwang
- From the Department of Biochemistry, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Piscataway, New Jersey 08854 and
| | - Barbara Brodsky
- From the Department of Biochemistry, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Piscataway, New Jersey 08854 and
- the Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155
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30
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Staroszczyk H, Pielichowska J, Sztuka K, Stangret J, Kołodziejska I. Molecular and structural characteristics of cod gelatin films modified with EDC and TGase. Food Chem 2012. [DOI: 10.1016/j.foodchem.2011.07.047] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Decrease of available lysine in thermally treated gelatin followed by LC–UV: Influence on molar mass and ability to helixes’ formation. Food Hydrocoll 2011. [DOI: 10.1016/j.foodhyd.2011.02.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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32
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Cross-linking of collagen with laccases and tyrosinases. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2011.03.007] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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33
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Lorenzo G, Checmarev G, Zaritzky N, Califano A. Linear viscoelastic assessment of cold gel-like emulsions stabilized with bovine gelatin. Lebensm Wiss Technol 2011. [DOI: 10.1016/j.lwt.2010.08.023] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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34
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Wu DQ, Chu B. Time-Resolved Small Angle X-Ray Scattering and Dynamic Light Scattering Studies of Sol-Gel Transition in Gelatin. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-143-203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractStructural and dynamical properties of an aqueous gelatin solution (5 wt%, 0.1M NaCi, pH=7) in a sol-gel transition were studied by time-resolved small angle x-ray scattering (SAXS) and dynamic light scattering (DLS) after quenching the gelatin sol at ∼45”C to 11°C. SAXS intensity measurements suggested the presence of gel fibrils which grew initially in cross-section. The average cross-section of the gel fibrils reached a constant value after an initial growth period of ∼800 sec. Further increase in SAXS intensity could be attributed to the increase in the length of the gel fibrils. Photon correlation, on the other hand, clearly showed two relaxation modes in both the sol and the gel (∼1 hr after the quenching process) states: a fast cooperative diffusion mode which remained constant from the sol to the gel state after correction for the temperature dependence of solvent viscosity; and a slow mode that could be attributed to the self-diffusion of the “free” gelatin chains and aggregates. The slow mode contribution to the time correlation function was reduced from ∼40% in sol to ∼20% in gel signaling a decrease but not the elimination of “free” particles in the gel network. The decrease in the intensity contribution by the slow mode is, however, accompanied by a large increase in the characteristic line-width distribution.
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35
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Haugstad G, Gladfelter WL, Weberg EB, Weberg RT, Weatherill TD. Probing Biopolymer Films with Scanning Force Methods. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-355-253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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36
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Chys P, Gielens C, Meersman F. FTIR 2D correlation spectroscopy of α1 and α2 fractions of an alkali-pretreated gelatin. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2011; 1814:318-25. [DOI: 10.1016/j.bbapap.2010.10.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2010] [Revised: 09/24/2010] [Accepted: 10/04/2010] [Indexed: 10/19/2022]
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37
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Westwood M, Gunning AP, Parker R. Temperature-Dependent Growth of Gelatin−Poly(galacturonic acid) Multilayer Films and Their Responsiveness to Temperature, pH, and NaCl. Macromolecules 2010. [DOI: 10.1021/ma101466w] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marta Westwood
- Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, United Kingdom
| | - A. Patrick Gunning
- Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, United Kingdom
| | - Roger Parker
- Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, United Kingdom
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38
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Sunde EP, Halle B. Mechanism of 1H-14N cross-relaxation in immobilized proteins. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2010; 203:257-273. [PMID: 20163976 DOI: 10.1016/j.jmr.2010.01.008] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2009] [Accepted: 01/15/2010] [Indexed: 05/28/2023]
Abstract
A resonant enhancement of the water-1H relaxation rate at three distinct frequencies in the range 0.5-3 MHz has been observed in a variety of aqueous biological systems. These so-called quadrupole (Q) peaks have been linked to a dipolar flip-flop polarization transfer from 1H nuclei to rapidly relaxing amide 14N nuclei in rotationally immobilized proteins. While the Q-peak frequencies conform to the known amide 14N quadrupole coupling parameters, a molecular model that accounts for the intensity and shape of the Q peaks has not been available. Here, we present such a model and test it against an extensive set of Q-peak data from two fully hydrated crosslinked proteins under conditions of variable temperature, pH and H/D isotope composition. We propose that polarization transfer from bulk water to amide 14N occurs in three steps: from bulk water to a so-called intermediary proton via material diffusion/exchange, from intermediary to amide proton by cross-relaxation driven by exchange-mediated orientational randomization of their mutual dipole coupling, and from amide proton to 14N by resonant dipolar relaxation 'of the second kind', driven by 14N spin fluctuations, which, in turn, are induced by restricted rigid-body motions of the protein. An essentially equivalent description of the last step can be formulated in terms of coherent 1H-->14N polarization transfer followed by fast 14N relaxation. Using independent structural and kinetic information, we show that the Q peaks from these two proteins involve approximately 7 intermediary protons in internal water molecules and side-chain hydroxyl groups with residence times of order 10(-5) s. The model not only accounts quantitatively for the extensive data set, but also explains why Q peaks are hardly observed from gelatin gels.
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Affiliation(s)
- Erik P Sunde
- Biophysical Chemistry, Center for Molecular Protein Science, Lund University, SE-22100 Lund, Sweden
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39
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40
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41
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Piñeiro Y, López-Quintela MA, Rivas J, Leisner D. Percolation threshold and scattering power law of gelatin gels. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2009; 79:041409. [PMID: 19518235 DOI: 10.1103/physreve.79.041409] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Revised: 01/22/2009] [Indexed: 05/27/2023]
Abstract
Gelation of gelatin was broadly studied by experimental and theoretical methods. Power laws observed on the gel point-mainly obtained by dynamic light scattering (DLS)-are considered to be the signature of some special dynamic phenomena ascribed to the appearance of a percolation cluster. We present here experimental (DLS and rheometric measurements) and Monte Carlo simulation studies showing that the percolation threshold and DLS power-law decay occur on different times. We ascribe the percolation point to the time where the scattering medium mode diverges. This mode is sensitive to the clusters' growth and diverges when the system attains the percolation threshold. The power-law behavior is obtained only in the postpercolation regime.
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Affiliation(s)
- Y Piñeiro
- Department of Applied Physics, University of Santiago de Compostela, Campus Sur, E-15782 Santiago de Compostela, Spain
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42
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43
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Fukae R, Midorikawa T. Preparation of gelatin fiber by gel spinning and its mechanical properties. J Appl Polym Sci 2008. [DOI: 10.1002/app.28969] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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44
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Karim A, Bhat R. Gelatin alternatives for the food industry: recent developments, challenges and prospects. Trends Food Sci Technol 2008. [DOI: 10.1016/j.tifs.2008.08.001] [Citation(s) in RCA: 228] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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45
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Chen K, Vyazovkin S. Temperature Dependence of Sol-Gel Conversion Kinetics in Gelatin-Water System. Macromol Biosci 2008; 9:383-92. [DOI: 10.1002/mabi.200800214] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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46
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Solgaard G, Haug IJ, Draget KI. Proteolytic degradation of cold-water fish gelatin solutions and gels. Int J Biol Macromol 2008; 43:192-7. [DOI: 10.1016/j.ijbiomac.2008.05.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2008] [Revised: 05/06/2008] [Accepted: 05/08/2008] [Indexed: 10/22/2022]
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Gornall JL, Terentjev EM. Universal kinetics of helix-coil transition in gelatin. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2008; 77:031908. [PMID: 18517423 DOI: 10.1103/physreve.77.031908] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2007] [Revised: 01/04/2008] [Indexed: 05/26/2023]
Abstract
By covering a much wider concentration range than previous studies we find a very unusual exponential dependence of the rate of helix formation on concentration of gelatin in water and ethylene glycol solutions. By applying a procedure of concentration-temperature superposition we build a master curve describing the initial renaturation rates in both solvents. The growth of the normalized helical fraction chi(t) is a first-order process, with a rate constant consistent with cis-trans isomerization, in most situations. We propose that association of three separate chains to form a triple helical nucleus occurs rapidly and contributes less to the helical onset than previously thought. The measured helix content is a result of lengthening of the triple helix after nucleation, by zipping from the associated nuclei.
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Affiliation(s)
- J L Gornall
- Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3OHE, United Kingdom
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Gornall JL, Terentjev EM. Helix-coil transition of gelatin: helical morphology and stability. SOFT MATTER 2008; 4:544-549. [PMID: 32907218 DOI: 10.1039/b713075a] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
By combining optical rotation with thermal characterization and rheological measurements, we have studied triple helix formation in water and ethylene glycol solutions of gelatin. We find the enthalpy change per unit helix required for the transition from triple helix to random coil is independent of the concentration of helices in solution and the temperature at which the helices form. Helices formed in ethylene glycol are less stable than those formed in water solutions as, unlike water, ethylene glycol is too large a molecule to mediate interchain hydrogen bonds. The storage modulus has a universal dependence on helix concentration in both solvents but, due to a reduction in helix length, the critical concentration at which an elastic gel forms is smaller in ethylene glycol.
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Affiliation(s)
- Joanne L Gornall
- Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, UKCB3 0HE
| | - Eugene M Terentjev
- Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, UKCB3 0HE
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Boulègue C, Musiol HJ, Götz MG, Renner C, Moroder L. Natural and artificial cystine knots for assembly of homo- and heterotrimeric collagen models. Antioxid Redox Signal 2008; 10:113-25. [PMID: 17961005 DOI: 10.1089/ars.2007.1868] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Native collagens are molecules that are difficult to handle because of their high tendency towards aggregation and denaturation. It was discovered early on that synthetic collagenous peptides are more amenable to conformational characterization and thus can serve as useful models for structural and functional studies. Single-stranded collagenous peptides of high propensity to self-associate into triple-helical trimers were used for this purpose as well as interchain-crosslinked homotrimers assembled on synthetic scaffolds. With the growing knowledge of the biosynthetic pathways of natural collagens and the importance of their interchain disulfide crosslinks, which stabilize the triple-helical structure, native as well as de novo designed cystine knots have gained increasing attention in the assembly of triple-stranded collagen peptides. In addition, natural sequences of collagens were incorporated in order to biophysically characterize their functional epitopes. This review is focused on the methods developed over the years, and future perspectives for the production of collagen-mimicking synthetic and recombinant triple-helical homo- and heterotrimers.
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Affiliation(s)
- Cyril Boulègue
- Max-Planck-Institute of Biochemistry, Martinsried, Germany
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Noel TR, Krzeminski A, Moffat J, Parker R, Wellner N, Ring SG. The deposition and stability of pectin/protein and pectin/poly-l-lysine/protein multilayers. Carbohydr Polym 2007. [DOI: 10.1016/j.carbpol.2007.04.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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