1
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Watson J, Balmforth V, Gray E, Unthank MG. pH-Responsive, Thermoset Polymer Coatings for Active Protection against Aluminum Corrosion. ACS APPLIED MATERIALS & INTERFACES 2024; 16:12986-12995. [PMID: 38426266 PMCID: PMC10941078 DOI: 10.1021/acsami.3c14752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 02/07/2024] [Accepted: 02/13/2024] [Indexed: 03/02/2024]
Abstract
This paper describes the synthesis and use of multifunctional methacrylic monomers, which contain basic (amine) functional groups, including an example in which an acid-labile tert-butylcarbamate-protected glycine is used to form a novel methacrylic monomer. The "protected" amino acid-derived functional monomer (BOC-Gly-MA) is copolymerized with an epoxide functional methacrylic monomer (GMA), to deliver novel multifunctional polymers, which are processed into powder coatings and used to study filiform corrosion at the surface of an aluminum substrate. The BOC-Gly-MA-containing copolymers were shown to improve a coating's anticorrosion performance, presenting the lowest average filiform corrosion (FFC) track length, total FFC number, and total corroded surface area (CSA) of the coatings investigated. Further to this, a mode of action for the role of BOC-Gly functional polymers in corrosion protection is proposed, supported by both solution and polymer-aluminum interface studies, delivering new insights into the mode of action of pH-responsive polymer coatings.
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Affiliation(s)
- Joseph Watson
- Northumbria
University, Newcastle
upon Tyne NE1 8ST, U.K.
| | - Victoria Balmforth
- AkzoNobel,
Polymer Development Group, Stoneygate Lane, Felling, Tyne & Wear NE10 0JY, U.K.
| | - Elaine Gray
- AkzoNobel,
Polymer Development Group, Stoneygate Lane, Felling, Tyne & Wear NE10 0JY, U.K.
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2
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Tatsubo D, Suyama K, Sakamoto N, Tomohara K, Taniguchi S, Maeda I, Nose T. Determining the Sequence Dependency of Self-Assembly of Elastin-Like Peptides Using Short Peptide Analogues with Shuffled Repetitive Sequences. Biochemistry 2023; 62:2559-2570. [PMID: 37540116 DOI: 10.1021/acs.biochem.3c00146] [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: 08/05/2023]
Abstract
Synthetic elastin-like peptides (ELPs) that possess characteristic tropoelastin-derived hydrophobic repetitive sequences, such as (VPGVG)n, exhibit thermoresponsive reversible self-assembly. Although their thermoresponsive properties have been well-studied, the sequence-dependent and structural requirements for self-assembly remain ambiguous. In particular, it is still unclear whether the amino acid sequences derived from tropoelastin are necessary for self-assembly. In this study, 11 sequence-shuffled ELP analogues based on (FPGVG)5, which is a previously developed short ELP (sELP), were designed to elucidate the sequence-dependent and structural requirements for their self-assembly. Among them, eight shuffled peptides exhibited self-assembling properties, whereas the other three peptides were difficult to dissolve in water. Structural analyses revealed that the structural characteristics of the three insoluble peptides were different from those of their thermoresponsive analogues. Furthermore, the secondary structures of the peptide analogues possessing the self-assembly abilities were different from each other. These results suggest that the potential for self-assembly and water solubility of sELPs depend on the primary structure in each repeated unit. Moreover, several shuffled analogues exhibited more potent self-assembling properties than the original (FPGVG)5, indicating that shorter ELPs can be obtained using their novel motifs as repetitive units. We also observed that the presence of Pro-Gly sequence in the repeating units was advantageous in terms of peptide solubility. Although further analysis will be necessary to elucidate the molecular mechanism underlying the self-assembly of these sELPs, this study provides insights into the relationship between the amino acid sequence and the self-assembling ability of the peptides for developing new sELPs for various applications.
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Affiliation(s)
- Daiki Tatsubo
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Keitaro Suyama
- Faculty of Arts and Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Naoki Sakamoto
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Keisuke Tomohara
- Faculty of Arts and Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Suguru Taniguchi
- Department of Physics and Information Technology, Kyushu Institute of Technology, Iizuka 820-8502, Fukuoka, Japan
| | - Iori Maeda
- Department of Physics and Information Technology, Kyushu Institute of Technology, Iizuka 820-8502, Fukuoka, Japan
| | - Takeru Nose
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, Fukuoka 819-0395, Japan
- Faculty of Arts and Science, Kyushu University, Fukuoka 819-0395, Japan
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3
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Zhou R, Zhang L, Zeng B, Zhou Y, Jin W, Zhang G. A novel self-purified auxiliary protein enhances the lichenase activity towards lichenan for biomass degradation. Appl Microbiol Biotechnol 2023:10.1007/s00253-023-12608-y. [PMID: 37272940 DOI: 10.1007/s00253-023-12608-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 05/17/2023] [Accepted: 05/22/2023] [Indexed: 06/06/2023]
Abstract
Due to the complex composition of lichenan, lichenase alone cannot always hydrolyze it efficiently. Carbohydrate-binding modules (CBMs) and lytic polysaccharide monooxygenases (LPMOs) have been confirmed to increase the hydrolysis efficiency of lichenases. However, their practical application was hampered by the complex and costly preparation procedure, as well as the poor stability of LPMOs. Herein, we discovered a novel and stable auxiliary protein named SCE to boost the hydrolysis efficiency. SCE was composed of SpyCatcher (SC) and elastin-like polypeptides (ELPs) and could be easily and cheaply prepared. Under the optimal conditions, the boosting degree for SCE/lichenase was 1.45, and the reducing sugar yield improved by nearly 45%. The results of high-performance liquid chromatography (HPLC) indicated that SCE had no influence on the hydrolysis pattern of lichenase. Through the experimental verification and bioinformatics analysis, we proposed the role of SCE in promoting the interaction between the lichenase and substrates. These findings endow SC with a novel function in binding to insoluble lichenan, paving the way for biomass degradation and biorefinery. KEY POINTS: • A novel self-purification auxiliary protein that could boost the hydrolysis efficiency of lichenase has been identified. • The protein is highly produced, simple to prepare, well stable, and does not require any external electron donor. • The novel function of SpyCatcher in binding to insoluble lichenan was first demonstrated.
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Affiliation(s)
- Rui Zhou
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, Fujian Province, People's Republic of China
| | - Lingzhi Zhang
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, Fujian Province, People's Republic of China
| | - Bo Zeng
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, Fujian Province, People's Republic of China
| | - Yanhong Zhou
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, Fujian Province, People's Republic of China
| | - Wenhui Jin
- Technology Innovation Center for Exploitation of Marine Biological Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, 361005, Fujian Province, People's Republic of China
| | - Guangya Zhang
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, Fujian Province, People's Republic of China.
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4
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Hull SM, Lou J, Lindsay CD, Navarro RS, Cai B, Brunel LG, Westerfield AD, Xia Y, Heilshorn SC. 3D bioprinting of dynamic hydrogel bioinks enabled by small molecule modulators. SCIENCE ADVANCES 2023; 9:eade7880. [PMID: 37000873 PMCID: PMC10065439 DOI: 10.1126/sciadv.ade7880] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 02/24/2023] [Indexed: 06/19/2023]
Abstract
Three-dimensional bioprinting has emerged as a promising tool for spatially patterning cells to fabricate models of human tissue. Here, we present an engineered bioink material designed to have viscoelastic mechanical behavior, similar to that of living tissue. This viscoelastic bioink is cross-linked through dynamic covalent bonds, a reversible bond type that allows for cellular remodeling over time. Viscoelastic materials are challenging to use as inks, as one must tune the kinetics of the dynamic cross-links to allow for both extrudability and long-term stability. We overcome this challenge through the use of small molecule catalysts and competitors that temporarily modulate the cross-linking kinetics and degree of network formation. These inks were then used to print a model of breast cancer cell invasion, where the inclusion of dynamic cross-links was found to be required for the formation of invasive protrusions. Together, we demonstrate the power of engineered, dynamic bioinks to recapitulate the native cellular microenvironment for disease modeling.
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Affiliation(s)
- Sarah M. Hull
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
| | - Junzhe Lou
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | | | - Renato S. Navarro
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Betty Cai
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Lucia G. Brunel
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
| | | | - Yan Xia
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Sarah C. Heilshorn
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
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5
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Tanaka N, Suyama K, Tomohara K, Maeda I, Nose T. Branched short elastin-like peptides with temperature responsiveness obtained by EDTA-mediated multimerization. J Pept Sci 2023; 29:e3449. [PMID: 36038531 DOI: 10.1002/psc.3449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 01/12/2023]
Abstract
Elastin-like peptides (ELPs) exhibit a reversible phase transition, known as coacervation, triggered by temperature changes. This property makes them useful as stimuli-responsive molecular materials for various applications. Among ELPs, short peptide chain lengths have some advantages over long peptide chain lengths because short ELPs can be easily obtained by chemical synthesis, allowing the use of various amino acids, including D-type and unnatural amino acids, at any position in the sequence. Moreover, the incorporated amino acids readily affect the temperature-responsive behavior of ELPs. However, to be utilized in various applications, it is necessary to develop short ELPs and to investigate their temperature-responsive properties. To obtain further insights into the temperature-responsive behavior of the short ELPs, we investigated branched short ELP analogs composed of (FPGVG)n chains (n = 1 or 2, abbreviated as F1 and F2, respectively). We synthesized multimers composed of four F1 chains or two to four F2 chains using ethylenediaminetetraacetic acid (EDTA) as a central component of multimerization. Our results show that the multimers obtained exhibited coacervation in aqueous solutions whereas linear F1 or F2 did not. Furthermore, the structural features of the obtained multimers were the same as those of linear (FPGVG)4 . In this study, we demonstrated that molecules capable of coacervation can be obtained by multimerization of F1 or F2. The temperature-responsive molecules obtained using short ELPs make it possible to use them as easy-to-synthesize peptide tags to confer temperature responsiveness to various molecules, which will aid the development of temperature-responsive biomaterials with a wide variety of functions.
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Affiliation(s)
- Naoki Tanaka
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, Fukuoka, Japan
| | - Keitaro Suyama
- Faculty of Arts and Science, Kyushu University, Fukuoka, Japan
| | | | - Iori Maeda
- Department of Physics and Information Technology, Kyushu Institute of Technology, Iizuka, Japan
| | - Takeru Nose
- Department of Chemistry, Faculty and Graduate School of Science, Kyushu University, Fukuoka, Japan.,Faculty of Arts and Science, Kyushu University, Fukuoka, Japan
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6
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Elastin-like polypeptide-based micelles as a promising platform in nanomedicine. J Control Release 2023; 353:713-726. [PMID: 36526018 DOI: 10.1016/j.jconrel.2022.12.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 12/05/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
New and improved nanomaterials are constantly being developed for biomedical purposes. Nanomaterials based on elastin-like polypeptides (ELPs) have increasingly shown potential over the past two decades. These polymers are artificial proteins of which the design is based on human tropoelastin. Due to this similarity, ELP-based nanomaterials are biodegradable and therefore well suited to drug delivery. The assembly of ELP molecules into nanoparticles spontaneously occurs at temperatures above a transition temperature (Tt). The ELP sequence influences both the Tt and the physicochemical properties of the assembled nanomaterial. Nanoparticles with desired properties can hence be designed by choosing the appropriate sequence. A promising class of ELP nanoparticles are micelles assembled from amphiphilic ELP diblock copolymers. Such micelles are generally uniform and well defined. Furthermore, site-specific attachment of cargo to the hydrophobic block results in micelles with the cargo shielded inside their core, while conjugation to the hydrophilic block causes the cargo to reside in the corona where it is available for interactions. Such control over particle design is one of the main contributing factors for the potential of ELP-based micelles as a drug delivery system. Additionally, the micelles are easily loaded with protein or peptide-based cargo by expressing it as a fusion protein. Small molecule drugs and other cargo types can be either covalently conjugated to ELP domains or physically entrapped inside the micelle core. This review aims to give an overview of ELP-based micelles and their applications in nanomedicine.
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7
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Lima LF, Sousa MGDC, Rodrigues GR, de Oliveira KBS, Pereira AM, da Costa A, Machado R, Franco OL, Dias SC. Elastin-like Polypeptides in Development of Nanomaterials for Application in the Medical Field. FRONTIERS IN NANOTECHNOLOGY 2022. [DOI: 10.3389/fnano.2022.874790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Elastin-like polypeptides (ELPs) are biopolymers formed by amino acid sequences derived from tropoelastin. These biomolecules can be soluble below critical temperatures, forming aggregates at higher temperatures, which makes them an interesting source for the design of different nanobiomaterials. These nanobiomaterials can be obtained from heterologous expression in several organisms such as bacteria, fungi, and plants. Thanks to the many advantages of ELPs, they have been used in the biomedical field to develop nanoparticles, nanofibers, and nanocomposites. These nanostructures can be used in multiple applications such as drug delivery systems, treatments of type 2 diabetes, cardiovascular diseases, tissue repair, and cancer therapy. Thus, this review aims to shed some light on the main advances in elastin-like-based nanomaterials, their possible expression forms, and importance to the medical field.
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8
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Liu H, Prachyathipsakul T, Koyasseril-Yehiya TM, Le SP, Thayumanavan S. Molecular bases for temperature sensitivity in supramolecular assemblies and their applications as thermoresponsive soft materials. MATERIALS HORIZONS 2022; 9:164-193. [PMID: 34549764 PMCID: PMC8757657 DOI: 10.1039/d1mh01091c] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Thermoresponsive supramolecular assemblies have been extensively explored in diverse formats, from injectable hydrogels to nanoscale carriers, for a variety of applications including drug delivery, tissue engineering and thermo-controlled catalysis. Understanding the molecular bases behind thermal sensitivity of materials is fundamentally important for the rational design of assemblies with optimal combination of properties and predictable tunability for specific applications. In this review, we summarize the recent advances in this area with a specific focus on the parameters and factors that influence thermoresponsive properties of soft materials. We summarize and analyze the effects of structures and architectures of molecules, hydrophilic and lipophilic balance, concentration, components and external additives upon the thermoresponsiveness of the corresponding molecular assemblies.
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Affiliation(s)
- Hongxu Liu
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
| | | | | | - Stephanie P Le
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
| | - S Thayumanavan
- Department of Chemistry, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA.
- Department of Biomedical Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Molecular and Cellular Biology Program, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Centre for Bioactive Delivery, Institute for Applied Life Science, University of Massachusetts, Amherst, Massachusetts 01003, USA
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9
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Carvalho BG, Vit FF, Carvalho HF, Han SW, de la Torre LG. Recent advances in co-delivery nanosystems for synergistic action in cancer treatment. J Mater Chem B 2021; 9:1208-1237. [PMID: 33393582 DOI: 10.1039/d0tb02168g] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Nanocarrier delivery systems have been widely studied to carry unique or dual chemical drugs. The major challenge of chemotherapies is to overcome the multidrug-resistance (MDR) of cells to antineoplastic medicines. In this context, nano-scale technology has allowed researchers to develop biocompatible nano-delivery systems to overcome the limitation of chemical agents. The development of nano-vehicles may also be directed to co-deliver different agents such as drugs and genetic materials. The delivery of nucleic acids targeting specific cells is based on gene therapy principles to replace the defective gene, correct genome errors or knock-down a particular gene. Co-delivery systems are attractive strategies due to the possibility of achieving synergistic therapeutic effects, which are more effective in overcoming the MDR of cancer cells. These combined therapies can provide better outcomes than separate delivery approaches carrying either siRNA, miRNA, pDNA, or drugs. This article reviews the main design features that need to be associated with nano-vehicles to co-deliver drugs, genes, and gene-drug combinations with efficacy. The advantages and disadvantages of co-administration approaches are also overviewed and compared with individual nanocarrier systems. Herein, future trends and perspectives in designing novel nano-scale platforms to co-deliver therapeutic agents are also discussed.
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Affiliation(s)
- Bruna G Carvalho
- Department of Materials and Bioprocesses Engineering, School of Chemical Engineering, University of Campinas, Campinas, Brazil.
| | - Franciele F Vit
- Department of Materials and Bioprocesses Engineering, School of Chemical Engineering, University of Campinas, Campinas, Brazil.
| | - Hernandes F Carvalho
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Sang W Han
- Department of Biophysics, Federal University of São Paulo, Center for Cell and Molecular Therapy, São Paulo, Brazil
| | - Lucimara G de la Torre
- Department of Materials and Bioprocesses Engineering, School of Chemical Engineering, University of Campinas, Campinas, Brazil.
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10
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Abdelghani M, Shao J, Le DHT, Wu H, van Hest JCM. Self-Assembly or Coassembly of Multiresponsive Histidine-Containing Elastin-Like Polypeptide Block Copolymers. Macromol Biosci 2021; 21:e2100081. [PMID: 33942499 DOI: 10.1002/mabi.202100081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/25/2021] [Indexed: 11/05/2022]
Abstract
In this study a histidine containing elastin-like polypeptide (ELP) diblock copolymer is described with multiresponsive assembly behavior. Self-assembly into micelles is examined by two methods. First, the self-assembly is triggered by the addition of divalent metal ions, with Zn2+ being the most suitable one. Increasing the Zn2+ concentration stabilizes the nanoparticles over a large temperature window (4-45 °C). This diblock exhibits furthermore pH-responsiveness, and particles disassemble under mildly acidic conditions. Second, the coassembly of this ELP with a diblock ELP is examined, which is not responsive to pH and metal ions. Coassembly is triggered by heating the ELPs quickly above the transition temperature of the less hydrophobic block, which results in stable nanoparticles without the need to add metal ions. This novel ELP system offers a versatile modular nanocarrier platform that can respond to different stimuli and can be tuned effectively.
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Affiliation(s)
- Mona Abdelghani
- Bio-Organic Chemistry, Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, Helix (STO 3.41), P. O. Box 513, Eindhoven, 5600 MB, The Netherlands
| | - Jingxin Shao
- Bio-Organic Chemistry, Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, Helix (STO 3.41), P. O. Box 513, Eindhoven, 5600 MB, The Netherlands
| | - Duc H T Le
- Bio-Organic Chemistry, Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, Helix (STO 3.41), P. O. Box 513, Eindhoven, 5600 MB, The Netherlands
| | - Hanglong Wu
- Bio-Organic Chemistry, Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, Helix (STO 3.41), P. O. Box 513, Eindhoven, 5600 MB, The Netherlands
| | - Jan C M van Hest
- Bio-Organic Chemistry, Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, Helix (STO 3.41), P. O. Box 513, Eindhoven, 5600 MB, The Netherlands
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11
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Suyama K, Mawatari M, Tatsubo D, Maeda I, Nose T. Simple Regulation of the Self-Assembling Ability by Multimerization of Elastin-Derived Peptide (FPGVG) n Using Nitrilotriacetic Acid as a Building Block. ACS OMEGA 2021; 6:5705-5716. [PMID: 33681610 PMCID: PMC7931394 DOI: 10.1021/acsomega.0c06140] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 02/10/2021] [Indexed: 06/12/2023]
Abstract
Elastin comprises hydrophobic repetitive sequences, such as Val-Pro-Gly-Val-Gly, which are thought to be important for the temperature-dependent reversible self-association (coacervation). Elastin and elastin-like peptides (ELPs), owing to their characteristics, are expected to be applied as base materials for the development of new molecular tools, such as drug-delivery system carrier and metal-scavenging agents. Recently, several studies have been reported on the dendritic or branching ELP analogues. Although the topological difference of the branched ELPs compared to their linear counterparts may lead to useful properties in biomaterials, the available information regarding the effect of branching on molecular architecture and thermoresponsive behavior of ELPs is scarce. To obtain further insight into the thermoresponsive behavior of branched ELPs, novel ELPs, such as nitrilotriacetic acid (NTA)-(FPGVG) n conjugates, that is, (NTA)-Fn analogues possessing 1-3 (FPGVG) n (n = 3, 5) molecule(s), were synthesized and investigated for their coacervation ability. Turbidity measurement of the synthesized peptide analogues revealed that (NTA)-Fn analogues showed strong coacervation ability with various strengths. The transition temperature of NTA-Fn analogues exponentially decreased with increasing number of residues. In the circular dichroism measurements, trimerization did not alter the secondary structure of each peptide chain of the NTA-Fn analogue. In addition, it was also revealed that the NTA-Fn analogue possesses one peptide chain that could be utilized as metal-scavenging agents. The study findings indicated that multimerization of short ELPs via NTA is a useful and powerful strategy to obtain thermoresponsive molecules.
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Affiliation(s)
- Keitaro Suyama
- Laboratory
of Biomolecular Chemistry, Faculty of Arts and Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Mika Mawatari
- Department
of Chemistry, Faculty and Graduate School
of Science, Fukuoka 819-0395, Japan
| | - Daiki Tatsubo
- Department
of Chemistry, Faculty and Graduate School
of Science, Fukuoka 819-0395, Japan
| | - Iori Maeda
- Department
of Physics and Information Technology, Kyushu
Institute of Technology, Iizuka, Fukuoka 820-8502, Japan
| | - Takeru Nose
- Laboratory
of Biomolecular Chemistry, Faculty of Arts and Science, Kyushu University, Fukuoka 819-0395, Japan
- Department
of Chemistry, Faculty and Graduate School
of Science, Fukuoka 819-0395, Japan
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12
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13
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Wang S, Lin R, Ren Y, Zhang T, Lu H, Wang L, Fan D. Non-chromatographic purification of thermostable endoglucanase from Thermotoga maritima by fusion with a hydrophobic elastin-like polypeptide. Protein Expr Purif 2020; 173:105634. [PMID: 32325232 DOI: 10.1016/j.pep.2020.105634] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 02/26/2020] [Accepted: 03/31/2020] [Indexed: 01/08/2023]
Abstract
Endoglucanase EG12B from Thermotoga maritima is a thermophilic cellulase that has great potential for industrial applications. Here, to enable the selective purification of EG12B in a simple and efficient manner, an elastin-like polypeptide (ELP), which acts as a thermally responsive polypeptide, was fused with EG12B to enable its inverse phase transition cycling (ITC). A small gene library comprising ELPs from ELP5 to ELP50 was constructed using recursive directional ligation by plasmid reconstruction. ELP50 was added to the C-terminus of EG12B as a fusion tag to obtain the expression vector pET28-EG12B-ELP50, which was transformed into Escherichia coli BL21 (DE3) to enable the expression of fusion protein via IPTG induction. Gray scanning analysis revealed that the EG12B-ELP50 expression level was up to about 35% of the total cellular proteins. After three rounds of ITC, 8.14 mg of EG12B-ELP50 was obtained from 500-mL lysogeny broth culture medium. The recovery rate and purification fold of EG12B-ELP50 purified by ITC reached 78.1% and 11.8, respectively. The cellulase activity assay showed that EG12B-ELP50 had a better thermostability, higher optimal temperature, and longer half-life than those of free EG12B. Overall, our results suggested that ELP50 could be used as a favorable fusion tag, providing a rapid, simple, and inexpensive strategy for non-chromatographic target-protein purification.
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Affiliation(s)
- Shanshan Wang
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, 723001, China; Shaanxi Key Laboratory of Degradable Biomedical Materials, School of Chemical Engineering, Northwest University, Taibai North Road 229, Xi'an, 710069, China.
| | - Rui Lin
- Department of Gastroenterology and Hepatology, Tianjin Medical University, General Hospital, Tianjin, 300052, China
| | - Yanyan Ren
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, 723001, China
| | - Tao Zhang
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, 723001, China
| | - Hongzhao Lu
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, 723001, China
| | - Ling Wang
- School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, 723001, China
| | - Daidi Fan
- Shaanxi Key Laboratory of Degradable Biomedical Materials, School of Chemical Engineering, Northwest University, Taibai North Road 229, Xi'an, 710069, China.
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14
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Yang CG, Lang MF, Fu X, Lin H, Zhang LC, Ge GS, Sun J, Hu XJ. Application of short hydrophobic elastin-like polypeptides for expression and purification of active proteins. 3 Biotech 2020; 10:156. [PMID: 32181118 DOI: 10.1007/s13205-020-2139-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 02/15/2020] [Indexed: 02/02/2023] Open
Abstract
To investigate the application of short elastin-like polypeptides (ELPs) in the purification of bioactive proteins, short hydrophobic ELP[I] n (n = 30, 40, 50) tags were constructed. Both the ELP[I] n tags and the ELP[I] n -Trx fusion proteins could be stably expressed in Escherichia coli and purified by inverse transition cycling, respectively. Total protein concentrations determined by BCA protein assay showed that the yield of the fusion proteins decreased with increasing ELP length. Measurements of the inverse transition temperature (T t) of the ELP[I] n -Trx under different salts or PEG8000 concentrations showed decreased T t upon elevated concentrations; while, all the T ts were suitable for generating proteins from 4 to 37.5 ºC. Furthermore, to identify a linker peptide for bioactive protein production without the need to remove the ELP[I] n tag, the activity of eGFP protein fused with ELP[I]30 tag by either a poly-N or a G4S linker was quantified using a fluorescence spectrophotometer. The results indicated that the ELP[I]30-eGFP fusion proteins with the poly-N linker showed higher fluorescence levels than those with the G4S linker. Our results demonstrated that short ELP[I] n tags with low T t were useful in protein expression and purification, and poly-N linker played the key role in producing bioactive proteins without the need to remove the ELPs.
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Affiliation(s)
- Chun-Guang Yang
- Medical College, Dalian University, Dalian, 116622 Liaoning China
| | - Ming-Fei Lang
- Medical College, Dalian University, Dalian, 116622 Liaoning China
| | - Xin Fu
- Medical College, Dalian University, Dalian, 116622 Liaoning China
| | - Heng Lin
- Medical College, Dalian University, Dalian, 116622 Liaoning China
| | - Li-Chao Zhang
- Medical College, Dalian University, Dalian, 116622 Liaoning China
| | - Gao-Shun Ge
- Medical College, Dalian University, Dalian, 116622 Liaoning China
| | - Jing Sun
- College of Environment and Chemical Engineering, Dalian University, Dalian, 116622 Liaoning China
| | - Xue-Jun Hu
- Medical College, Dalian University, Dalian, 116622 Liaoning China
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15
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LeSavage BL, Suhar NA, Madl CM, Heilshorn SC. Production of Elastin-like Protein Hydrogels for Encapsulation and Immunostaining of Cells in 3D. J Vis Exp 2018. [PMID: 29863669 DOI: 10.3791/57739] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Two-dimensional (2D) tissue culture techniques have been essential for our understanding of fundamental cell biology. However, traditional 2D tissue culture systems lack a three-dimensional (3D) matrix, resulting in a significant disconnect between results collected in vitro and in vivo. To address this limitation, researchers have engineered 3D hydrogel tissue culture platforms that can mimic the biochemical and biophysical properties of the in vivo cell microenvironment. This research has motivated the need to develop material platforms that support 3D cell encapsulation and downstream biochemical assays. Recombinant protein engineering offers a unique toolset for 3D hydrogel material design and development by allowing for the specific control of protein sequence and therefore, by extension, the potential mechanical and biochemical properties of the resultant matrix. Here, we present a protocol for the expression of recombinantly-derived elastin-like protein (ELP), which can be used to form hydrogels with independently tunable mechanical properties and cell-adhesive ligand concentration. We further present a methodology for cell encapsulation within ELP hydrogels and subsequent immunofluorescent staining of embedded cells for downstream analysis and quantification.
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Affiliation(s)
| | - Nicholas A Suhar
- Department of Materials Science and Engineering, Stanford University
| | | | - Sarah C Heilshorn
- Department of Materials Science and Engineering, Stanford University;
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16
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Selvaraj A, Chen HT, Ya-Ting Huang A, Kao CL. Expedient on-resin modification of a peptide C-terminus through a benzotriazole linker. Chem Sci 2017; 9:345-349. [PMID: 29629103 PMCID: PMC5868309 DOI: 10.1039/c7sc03229c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 10/29/2017] [Indexed: 12/28/2022] Open
Abstract
Peptides with various C-terminal functionalization, including peptides and dendrimers, were prepared via SPPS and an efficient on-resin modification.
A convenient and efficient chemical toolbox was developed for the on-resin C-terminal functionalization of various peptides. By transforming resin-bound 3,4-diaminobenzoic acid species with isoamyl nitrite, the resulting resin-bound benzotriazole entity can be efficiently displaced by nucleophiles during cleavage of the peptide–resin connection in a short reaction time. The resin cleavage step allowed for the use of various nucleophiles including water, EtOH, amines, thiol, and G5 poly(amidoamino) dendrimers with yields ranging from 66% to 82% within 5 h. This method was successfully applied to prepare the elastin sequence (VPGVG)4 through on-resin ligation in 77% yield in one day and a head-to-tail cyclic peptide, sunflower trypsin inhibitor-1, in 42% yield.
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Affiliation(s)
- Anand Selvaraj
- Department of Medicinal and Applied Chemistry , Kaohsiung Medical University , Kaohsiung 807 , Taiwan .
| | - Hui-Ting Chen
- Department of Fragrance and Cosmetic Science , Kaohsiung Medical University , Kaohsiung 807 , Taiwan.,Department of Medical Research , Kaohsiung Medical University Hospital , Kaohsiung 807 , Taiwan
| | - Adela Ya-Ting Huang
- Department of Medicinal and Applied Chemistry , Kaohsiung Medical University , Kaohsiung 807 , Taiwan .
| | - Chai-Lin Kao
- Department of Medicinal and Applied Chemistry , Kaohsiung Medical University , Kaohsiung 807 , Taiwan . .,Department of Medical Research , Kaohsiung Medical University Hospital , Kaohsiung 807 , Taiwan.,Department of Chemistry , National Sun Yat-sen University , Kaohsiung 80424 , Taiwan
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17
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Heterogeneity of Scaffold Biomaterials in Tissue Engineering. MATERIALS 2016; 9:ma9050332. [PMID: 28773457 PMCID: PMC5503070 DOI: 10.3390/ma9050332] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 04/23/2016] [Accepted: 04/26/2016] [Indexed: 12/20/2022]
Abstract
Tissue engineering (TE) offers a potential solution for the shortage of transplantable organs and the need for novel methods of tissue repair. Methods of TE have advanced significantly in recent years, but there are challenges to using engineered tissues and organs including but not limited to: biocompatibility, immunogenicity, biodegradation, and toxicity. Analysis of biomaterials used as scaffolds may, however, elucidate how TE can be enhanced. Ideally, biomaterials should closely mimic the characteristics of desired organ, their function and their in vivo environments. A review of biomaterials used in TE highlighted natural polymers, synthetic polymers, and decellularized organs as sources of scaffolding. Studies of discarded organs supported that decellularization offers a remedy to reducing waste of donor organs, but does not yet provide an effective solution to organ demand because it has shown varied success in vivo depending on organ complexity and physiological requirements. Review of polymer-based scaffolds revealed that a composite scaffold formed by copolymerization is more effective than single polymer scaffolds because it allows copolymers to offset disadvantages a single polymer may possess. Selection of biomaterials for use in TE is essential for transplant success. There is not, however, a singular biomaterial that is universally optimal.
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