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Özkul G, Kehribar EŞ, Ahan RE, Şeker UÖŞ. An Antibiotic-Degrading Engineered Biofilm Platform to Combat Environmental Antibiotic Resistance. ACS Biomater Sci Eng 2024. [PMID: 39226538 DOI: 10.1021/acsbiomaterials.4c01074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
The presence of antibiotics in natural water bodies is a growing problem regarding the occurrence of antibiotic resistance among various species. This is mainly caused by the excessive use of medical and veterinary antibiotics as well as the lack of effective treatment processes for eliminating residual antibiotics from wastewaters. In this study, we introduce a genetically engineered biomaterial as a solution for the effective degradation of one of the dominantly found antibiotics in natural water bodies. Our biomaterial harnesses laccase-type enzymes, which are known to attack specific types of antibiotics, i.e., fluoroquinolone-type synthetic antibiotics, and as a result degradation occurs. The engineered biomaterial is built using Escherichia coli biofilm protein CsgA as a scaffold, which is fused separately to two different laccase enzymes with the SpyTag-SpyCatcher peptide-protein duo. The designed biofilm materials were successful in degrading ciprofloxacin, as demonstrated with the data obtained from mass spectrometry analysis and cell viability assays.
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Affiliation(s)
- Gökçe Özkul
- UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
| | - Ebru Şahin Kehribar
- UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
| | - Recep Erdem Ahan
- UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
| | - Urartu Özgür Şafak Şeker
- UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
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2
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Okmen Altas B, Kalaycioglu GD, Lifshiz-Simon S, Talmon Y, Aydogan N. Tadpole-Like Anisotropic Polymer/Lipid Janus Nanoparticles for Nose-to-Brain Drug Delivery: Importance of Geometry, Elasticity on Mucus-Penetration Ability. Mol Pharm 2024; 21:633-650. [PMID: 38164788 DOI: 10.1021/acs.molpharmaceut.3c00773] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Asymmetric geometry (aspect ratio >1), moderate stiffness (i.e., semielasticity), large surface area, and low mucoadhesion of nanoparticles are the main features to reach the brain by penetrating across the nasal mucosa. Herein, a new application has been presented for the use of multifunctional Janus nanoparticles (JNPs) with controllable geometry and size as a nose-to-brain (N2B) delivery system by changing proportions of Precirol ATO 5 and polycaprolactone compartments and other operating conditions. To bring to light the N2B application of JNPs, the results are presented in comparison with polymer and solid lipid nanoparticles, which are frequently used in the literature regarding their biopharmaceutical aspects: mucoadhesion and permeability through the nasal mucosa. The morphology and geometry of JPs were observed via cryogenic-temperature transmission electron microscopy images, and their particle sizes were verified by dynamic light scattering, atomic force microscopy, and scanning electron microscopy. Although all NPs showed penetration across the mucus barrier, the best increase in penetration was observed with asymmetric and semielastic JNPs, which have low interaction ability with the mucus layer. This study presents a new and promising field of application for a multifunctional system suitable for N2B delivery, potentially benefiting the treatment of brain tumors and other central nervous system diseases.
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Affiliation(s)
- Burcu Okmen Altas
- Department of Chemical Engineering, Hacettepe University, Beytepe, 06800 Ankara, Turkey
| | | | - Sapir Lifshiz-Simon
- Department of Chemical Engineering, and the Russell Berrie Nanotechnology Institute (RBNI), Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Yeshayahu Talmon
- Department of Chemical Engineering, and the Russell Berrie Nanotechnology Institute (RBNI), Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Nihal Aydogan
- Department of Chemical Engineering, Hacettepe University, Beytepe, 06800 Ankara, Turkey
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3
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Nanocoating of CsgA protein for enhanced cell adhesion and proliferation. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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4
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Huyer C, Modafferi D, Aminzare M, Ferraro J, Abdali Z, Roy S, Saldanha DJ, Wasim S, Alberti J, Feng S, Cicoira F, Dorval Courchesne NM. Fabrication of Curli Fiber-PEDOT:PSS Biomaterials with Tunable Self-Healing, Mechanical, and Electrical Properties. ACS Biomater Sci Eng 2022; 9:2156-2169. [PMID: 35687654 DOI: 10.1021/acsbiomaterials.1c01180] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Poly(3,4-ethylenedioxythiophene) polystyrenesulfonate (PEDOT:PSS) is a highly conductive, easily processable, self-healing polymer. It has been shown to be useful in bioelectronic applications, for instance, as a biointerfacing layer for studying brain activity, in biosensitive transistors, and in wearable biosensors. A green and biofriendly method for improving the mechanical properties, biocompatibility, and stability of PEDOT:PSS involves mixing the polymer with a biopolymer. Via structural changes and interactions with PEDOT:PSS, biopolymers have the potential to improve the self-healing ability, flexibility, and electrical conductivity of the composite. In this work, we fabricated novel protein-polymer multifunctional composites by mixing PEDOT:PSS with genetically programmable amyloid curli fibers produced byEscherichia coli bacteria. Curli fibers are among the stiffest protein polymers and, once isolated from bacterial biofilms, can form plastic-like thin films that heal with the addition of water. Curli-PEDOT:PSS composites containing 60% curli fibers exhibited a conductivity 4.5-fold higher than that of pristine PEDOT:PSS. The curli fibers imbued the biocomposites with an immediate water-induced self-healing ability. Further, the addition of curli fibers lowered the Young's and shear moduli of the composites, improving their compatibility for tissue-interfacing applications. Lastly, we showed that genetically engineered fluorescent curli fibers retained their ability to fluoresce within curli-PEDOT:PSS composites. Curli fibers thus allow to modulate a range of properties in conductive PEDOT:PSS composites, broadening the applications of this polymer in biointerfaces and bioelectronics.
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Affiliation(s)
- Catrina Huyer
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada.,Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Daniel Modafferi
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Masoud Aminzare
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Juliana Ferraro
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Zahra Abdali
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Sophia Roy
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Dalia Jane Saldanha
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Saadia Wasim
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada
| | - Johan Alberti
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada.,Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Shurui Feng
- Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 0C5, Canada.,Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec H3C 3J7, Canada
| | - Fabio Cicoira
- Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec H3C 3J7, Canada
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Kumar V, Sinha N, Thakur AK. Necessity of regulatory guidelines for the development of amyloid based biomaterials. Biomater Sci 2021; 9:4410-4422. [PMID: 34018497 DOI: 10.1039/d1bm00059d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Amyloid diseases are caused due to protein homeostasis failure where incorrectly folded proteins/peptides form cross-β-sheet rich amyloid fibrillar structures. Besides proteins/peptides, small metabolite assemblies also exhibit amyloid-like features. These structures are linked to several human and animal diseases. In addition, non-toxic amyloids with diverse physiological roles are characterized as a new functional class. This finding, along with the unique properties of amyloid like stability and mechanical strength, led to a surge in the development of amyloid-based biomaterials. However, the usage of these materials by humans and animals may pose a health risk such as the development of amyloid diseases and toxicity. This is possible because amyloid-based biomaterials and their fragments may assist seeding and cross-seeding mechanisms of amyloid formation in the body. This review summarizes the potential uses of amyloids as biomaterials, the concerns regarding their usage, and a prescribed workflow to initiate a regulatory approach.
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Affiliation(s)
- Vijay Kumar
- Department of Molecular Microbiology and Biotechnology, Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - Nabodita Sinha
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, UP-208016, India.
| | - Ashwani Kumar Thakur
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, UP-208016, India.
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6
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Yuca E, Şahin Kehribar E, Şeker UÖŞ. Interaction of microbial functional amyloids with solid surfaces. Colloids Surf B Biointerfaces 2021; 199:111547. [PMID: 33385820 DOI: 10.1016/j.colsurfb.2020.111547] [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: 10/21/2020] [Revised: 12/16/2020] [Accepted: 12/18/2020] [Indexed: 10/22/2022]
Abstract
HYPOTHESIS Self-assembling protein subunits hold great potential as biomaterials with improved functions. Among the self-assembled protein structures functional amyloids are promising unique properties such as resistance to harsh physical and chemical conditions their mechanical strength, and ease of functionalization. Curli proteins, which are functional amyloids of bacterial biofilms can be programmed as intelligent biomaterials. EXPERIMENTS In order to obtain controllable curli based biomaterials for biomedical applications, and to understand role of each of the curli forming monomeric proteins (namely CsgA and CsgB from Escherichia coli) we characterized their binding kinetics to gold, hydroxyapatite, and silica surfaces. FINDINGS We demonstrated that CsgA, CsgB, and their equimolar mixture have different binding strengths for different surfaces. On hydroxyapatite and silica surfaces, CsgB is the crucial element that determines the final adhesiveness of the CsgA-CsgB mixture. On the gold surface, on the other hand, CsgA controls the behavior of the mixture. Those findings uncover the binding behavior of curli proteins CsgA and CsgB on different biomedically valuable surfaces to obtain a more precise control on their adhesion to a targeted surface.
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Affiliation(s)
- Esra Yuca
- Molecular Biology and Genetics Department, Yildiz Technical University, 34210 Istanbul, Turkey
| | - Ebru Şahin Kehribar
- UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, TR-06800 Ankara, Turkey
| | - Urartu Özgür Şafak Şeker
- UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, TR-06800 Ankara, Turkey.
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7
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DeBenedictis EP, Zhang Y, Keten S. Structure and Mechanics of Bundled Semiflexible Polymer Networks. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Elizabeth P. DeBenedictis
- Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Yao Zhang
- Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Sinan Keten
- Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, Illinois 60208, United States
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8
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Lv J, Li Y, Zhou K, Guo P, Liu Y, Ding K, Li K, Zhong C, Xiao B. Force spectra of single bacterial amyloid CsgA nanofibers. RSC Adv 2020; 10:21986-21992. [PMID: 35516640 PMCID: PMC9054517 DOI: 10.1039/d0ra02749a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 06/03/2020] [Indexed: 01/04/2023] Open
Abstract
CsgA is a major protein subunit of Escherichia coli biofilms and plays key roles in bacterial adhesion and invasion. CsgA proteins can self-assemble into amyloid nanofibers, characterized by their hierarchical structures across multiple length scales, outstanding strength and their structural robustness under harsh environments. Here, magnetic tweezers were used to study the force spectra of CsgA protein at fibril levels. The two ends of a single nanofiber were directly connected between a magnetic bead and a glass slide using a previously reported tag-free method. We showed that a wormlike chain model could be applied to fit the typical force–extension curves of CsgA nanofibers and to estimate accordingly the mechanical properties. The bending stiffness of nanofibers increased with increasing diameters. The changes in extension of single CsgA fibers were found to be up to 17 fold that of the original length, indicating exceptional tensile properties. Our results provide new insights into the tensile properties of bacterial amyloid nanofibers and highlight the ultrahigh structural stability of the Escherichia coli biofilms. Magnetic tweezers were used to study the force spectra of CsgA, a major protein subunit of Escherichia coli biofilms, at fibril level.![]()
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Affiliation(s)
- Jingqi Lv
- Joint International Research Laboratory of Synthetic Biology and Medicine, School of Biology and Biological Engineering, South China University of Technology Guangzhou 510006 China
| | - Yingfeng Li
- Materials and Physical Biology Division, School of Physical Science and Technology, ShanghaiTech University Shanghai 201210 China
| | - Kai Zhou
- Joint International Research Laboratory of Synthetic Biology and Medicine, School of Biology and Biological Engineering, South China University of Technology Guangzhou 510006 China
| | - Pei Guo
- Joint International Research Laboratory of Synthetic Biology and Medicine, School of Biology and Biological Engineering, South China University of Technology Guangzhou 510006 China
| | - Yang Liu
- Joint International Research Laboratory of Synthetic Biology and Medicine, School of Biology and Biological Engineering, South China University of Technology Guangzhou 510006 China
| | - Ke Ding
- Joint International Research Laboratory of Synthetic Biology and Medicine, School of Biology and Biological Engineering, South China University of Technology Guangzhou 510006 China
| | - Ke Li
- Materials and Physical Biology Division, School of Physical Science and Technology, ShanghaiTech University Shanghai 201210 China
| | - Chao Zhong
- Materials and Physical Biology Division, School of Physical Science and Technology, ShanghaiTech University Shanghai 201210 China
| | - Botao Xiao
- Joint International Research Laboratory of Synthetic Biology and Medicine, School of Biology and Biological Engineering, South China University of Technology Guangzhou 510006 China .,School of Physics, Huazhong University of Science and Technology Wuhan 430074 China
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9
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Docking interactions determine early cleavage events in insulin proteolysis by pepsin: Experiment and simulation. Int J Biol Macromol 2020; 149:1151-1160. [PMID: 32001282 DOI: 10.1016/j.ijbiomac.2020.01.253] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/20/2020] [Accepted: 01/25/2020] [Indexed: 12/12/2022]
Abstract
In silico modelling of cascade enzymatic proteolysis is an exceedingly complex and challenging task. Here, we study partial proteolysis of insulin by pepsin: a process leading to the release of a highly amyloidogenic two chain 'H-fragment'. The H-fragment retains several cleavage sites for pepsin. However, under favorable conditions H-monomers rapidly self-assemble into proteolysis-resistant amyloid fibrils whose composition provides snapshots of early and intermediate stages of the proteolysis. In this work, we report a remarkable agreement of experimentally determined and simulation-predicted cleavage sites on different stages of the proteolysis. Prediction of cleavage sites was based on the comprehensive analysis of the docking interactions from direct simulation of coupled folding and binding of insulin (or its cleaved derivatives) to pepsin. The most frequent interactions were found to be between the pepsin's active site, or its direct vicinity, and the experimentally determined insulin cleavage sites, which suggest that the docking interactions govern the proteolytic process.
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10
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Kalyoncu E, Ahan RE, Ozcelik CE, Seker UOS. Genetic Logic Gates Enable Patterning of Amyloid Nanofibers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1902888. [PMID: 31402516 DOI: 10.1002/adma.201902888] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/15/2019] [Indexed: 06/10/2023]
Abstract
Distinct spatial patterning of naturally produced materials is observed in many cellular structures and even among communities of microorganisms. Reoccurrence of spatially organized materials in all branches of life is clear proof that organization is beneficial for survival. Indeed, organisms can trick the evolutionary process by using organized materials in ways that can help the organism to avoid unexpected conditions. To expand the toolbox for synthesizing patterned living materials, Boolean type "AND" and "OR" control of curli fibers expression is demonstrated using recombinases. Logic gates are designed to activate the production of curli fibers. The gates can be used to record the presence of input molecules and give output as CsgA expression. Two different curli fibers (CsgA and CsgA-His-tag) production are then selectively activated to explore distribution of monomers upon coexpression. To keep track of the composition of fibers, CsgA-His-tag proteins are labeled with nickel-nitrilotriacetic acid (Ni-NTA-) conjugated gold nanoparticles. It is observed that an organized living material can be obtained upon inducing the coexpression of different CsgA fibers. It is foreseen that living materials with user-defined curli composition hold great potential for the development of living materials for many biomedical applications.
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Affiliation(s)
- Ebuzer Kalyoncu
- UNAM - National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
- Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey
| | - Recep Erdem Ahan
- UNAM - National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
- Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey
| | - Cemile Elif Ozcelik
- UNAM - National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
- Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey
| | - Urartu Ozgur Safak Seker
- UNAM - National Nanotechnology Research Center, Bilkent University, Ankara, 06800, Turkey
- Institute of Materials Science and Nanotechnology, Bilkent University, Ankara, 06800, Turkey
- Interdisciplinary Neuroscience Program, Bilkent University, Ankara, 06800, Turkey
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Dorval Courchesne NM, DeBenedictis EP, Tresback J, Kim JJ, Duraj-Thatte A, Zanuy D, Keten S, Joshi NS. Biomimetic engineering of conductive curli protein films. NANOTECHNOLOGY 2018; 29:454002. [PMID: 30152795 DOI: 10.1088/1361-6528/aadd3a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Bioelectronic systems derived from peptides and proteins are of particular interest for fabricating novel flexible, biocompatible and bioactive devices. These synthetic or recombinant systems designed for mediating electron transport often mimic the proteinaceous appendages of naturally occurring electroactive bacteria. Drawing inspiration from such conductive proteins with a high content of aromatic residues, we have engineered a fibrous protein scaffold, curli fibers produced by Escherichia coli bacteria, to enable long-range electron transport. We report the genetic engineering and characterization of curli fibers containing aromatic residues of different nature, with defined spatial positioning, and with varying content on single self-assembling CsgA curli subunits. Our results demonstrate the impressive versatility of the CsgA protein for genetically engineering protein-based materials with new functions. Through a scalable purification process, we show that macroscopic gels and films can be produced, with engineered thin films exhibiting a greater conductivity compared with wild-type curli films. We anticipate that this engineered conductive scaffold, and our approach that combines computational modeling, protein engineering, and biosynthetic manufacture will contribute to the improvement of a range of useful bio-hybrid technologies.
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Affiliation(s)
- Noémie-Manuelle Dorval Courchesne
- Department of Chemical Engineering, McGill University, Montréal, QC, Canada. Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, United States of America
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12
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Onur T, Yuca E, Olmez TT, Seker UOS. Self-assembly of bacterial amyloid protein nanomaterials on solid surfaces. J Colloid Interface Sci 2018. [DOI: 10.1016/j.jcis.2018.03.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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13
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Nguyen PQ, Courchesne NMD, Duraj-Thatte A, Praveschotinunt P, Joshi NS. Engineered Living Materials: Prospects and Challenges for Using Biological Systems to Direct the Assembly of Smart Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704847. [PMID: 29430725 PMCID: PMC6309613 DOI: 10.1002/adma.201704847] [Citation(s) in RCA: 201] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 10/25/2017] [Indexed: 05/20/2023]
Abstract
Vast potential exists for the development of novel, engineered platforms that manipulate biology for the production of programmed advanced materials. Such systems would possess the autonomous, adaptive, and self-healing characteristics of living organisms, but would be engineered with the goal of assembling bulk materials with designer physicochemical or mechanical properties, across multiple length scales. Early efforts toward such engineered living materials (ELMs) are reviewed here, with an emphasis on engineered bacterial systems, living composite materials which integrate inorganic components, successful examples of large-scale implementation, and production methods. In addition, a conceptual exploration of the fundamental criteria of ELM technology and its future challenges is presented. Cradled within the rich intersection of synthetic biology and self-assembling materials, the development of ELM technologies allows the power of biology to be leveraged to grow complex structures and objects using a palette of bio-nanomaterials.
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Affiliation(s)
- Peter Q. Nguyen
- School of Engineering and Applied Sciences, Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, USA
| | - Noémie-Manuelle Dorval Courchesne
- School of Engineering and Applied Sciences, Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, USA
| | - Anna Duraj-Thatte
- School of Engineering and Applied Sciences, Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, USA
| | - Pichet Praveschotinunt
- School of Engineering and Applied Sciences, Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, USA
| | - Neel S. Joshi
- School of Engineering and Applied Sciences, Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, USA
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14
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Korayem MH, Shahali S, Rastegar Z. Experimental determination of folding factor of benign breast cancer cell (MCF10A) and its effect on contact models and 3D manipulation of biological particles. Biomech Model Mechanobiol 2017; 17:745-761. [DOI: 10.1007/s10237-017-0990-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 11/20/2017] [Indexed: 10/18/2022]
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15
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DeBenedictis EP, Ma D, Keten S. Structural predictions for curli amyloid fibril subunits CsgA and CsgB. RSC Adv 2017. [DOI: 10.1039/c7ra08030a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
CsgA are the building blocks of curli fibrils.
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Affiliation(s)
- E. P. DeBenedictis
- Department of Civil and Environmental Engineering and Mechanical Engineering
- Northwestern University
- Evanston
- USA
| | - D. Ma
- Department of Civil and Environmental Engineering and Mechanical Engineering
- Northwestern University
- Evanston
- USA
| | - S. Keten
- Department of Civil and Environmental Engineering and Mechanical Engineering
- Northwestern University
- Evanston
- USA
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