1
|
Sun S, Liang B, Yin Z, Pan S, Shi C, Guo C, Huang Z, Chu C, Dong Y. Mineralization, degradation and osteogenic property of polylactide multicomponent porous composites for bone repair: In vitro and in vivo study. Int J Biol Macromol 2024; 271:132378. [PMID: 38750853 DOI: 10.1016/j.ijbiomac.2024.132378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 05/05/2024] [Accepted: 05/12/2024] [Indexed: 05/26/2024]
Abstract
Gelatin and hydroxyapatite were assembled into polylactide porous matrix to prepare multicomponent porous composites for bone repair (PLA-gH). PLA-gH possessed a superior ability of mineralization. During simulated body fluids (SBF), the spherical Ca-P depositions on surface of PLA-gH became bulk as Ca/P decreased, while they locally turned into the rod with different variation in Ca/P during SBF containing bovine serum albumin (SBF-BSA), indicating that the mineralization of PLA-gH could be regulated by BSA. Meanwhile, PLA-gH possessed good degradation behaviour, especially in SBF-BSA, the degradation of PLA porous matrix was higher than that in SBF after 14-day immersion, whose crystallinity (Xc) decreased to a slightly lower level. Gelatin and hydroxyapatite endowed PLA-gH with good osteogenic property, characterized by obvious osteogenic differentiation and bone regeneration. In terms of predicting the cytocompatibility, osteogenic differentiation and new bone mineralization of PLA-gH by in vitro methods, applying SBF-BSA may be more reliable than SBF.
Collapse
Affiliation(s)
- Shanyun Sun
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Jiangsu Key Laboratory of Advanced Metallic Materials, Nanjing 211189, China
| | - Bin Liang
- Department of Orthopaedics, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Zhaowei Yin
- Department of Orthopaedics, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Shaowei Pan
- Department of Orthopaedics, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Chen Shi
- Department of Orthopaedics, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Chao Guo
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Jiangsu Key Laboratory of Advanced Metallic Materials, Nanjing 211189, China
| | - Zhihai Huang
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Jiangsu Key Laboratory of Advanced Metallic Materials, Nanjing 211189, China
| | - Chenglin Chu
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Jiangsu Key Laboratory of Advanced Metallic Materials, Nanjing 211189, China
| | - Yinsheng Dong
- School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Jiangsu Key Laboratory of Advanced Metallic Materials, Nanjing 211189, China.
| |
Collapse
|
2
|
Jia DZ, Ma GQ, Liu Q, Zhang J, Li JQ, Lin H, Li XJ, Zhong GJ, Li ZM. Extensional Stress-Induced Ductility of Poly(l-lactide) Films: Role of the Entangled Network in Amorphous Regions. Biomacromolecules 2023. [PMID: 37276461 DOI: 10.1021/acs.biomac.3c00188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The relationship between the density of the entangled amorphous network and the ductility of oriented poly(l-lactide) (PLLA) films is explored based on the preferential hydrolysis of the amorphous regions in phosphate buffer solution (PBS). PLLA films with a balance of ductility and stiffness have been prepared by the "casting-annealing stretching" based on mechanical rejuvenation, and the structural evolution and mechanical properties at different hydrolysis durations have been identified. Various stages are found during the transition of ductility to brittleness for hydrolyzed PLLA films. First, the elongation at break for hydrolyzed PLLA films remains unchanged in the first stage of hydrolysis and then gradually decreases. Eventually, the films turn to be brittle in the third stage. The strain-hardening modulus (GR) of the hydrolyzed films is utilized to reflect the density of the entangled amorphous network, and a gradual decrease of GR with hydrolysis time indicates the decisive role of the amorphous entanglement network in the mechanical rejuvenation-induced ductility of PLLA. The quantitative relationship between the entangled amorphous network and the stress-induced ductility of PLLA films is revealed. The dependence of deformation behavior on entangled amorphous network density is closely correlated to activated primary structure during deformation. The intact chain network plays a crucial role in sufficiently activating the primary structure to yield and disentanglement during the subsequent necking. These findings could advance the understanding of the PLLA's ductility induced by mechanical rejuvenation and offer guidance for awakening the intrinsic toughness of PLLA.
Collapse
Affiliation(s)
- De-Zhuang Jia
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Guo-Qi Ma
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Qian Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Jie Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Jia-Qi Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Hao Lin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Xu-Juan Li
- School of Environment and Resource, Southwest University of Science and Technology, Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Sichuan Engineering Lab of Non-Metallic Mineral Powder Modification & High-Value Utilization, Mianyang 621010, China
| | - Gan-Ji Zhong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Zhong-Ming Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| |
Collapse
|
3
|
Tournier V, Duquesne S, Guillamot F, Cramail H, Taton D, Marty A, André I. Enzymes' Power for Plastics Degradation. Chem Rev 2023; 123:5612-5701. [PMID: 36916764 DOI: 10.1021/acs.chemrev.2c00644] [Citation(s) in RCA: 56] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Plastics are everywhere in our modern way of living, and their production keeps increasing every year, causing major environmental concerns. Nowadays, the end-of-life management involves accumulation in landfills, incineration, and recycling to a lower extent. This ecological threat to the environment is inspiring alternative bio-based solutions for plastic waste treatment and recycling toward a circular economy. Over the past decade, considerable efforts have been made to degrade commodity plastics using biocatalytic approaches. Here, we provide a comprehensive review on the recent advances in enzyme-based biocatalysis and in the design of related biocatalytic processes to recycle or upcycle commodity plastics, including polyesters, polyamides, polyurethanes, and polyolefins. We also discuss scope and limitations, challenges, and opportunities of this field of research. An important message from this review is that polymer-assimilating enzymes are very likely part of the solution to reaching a circular plastic economy.
Collapse
Affiliation(s)
- Vincent Tournier
- Carbios, Parc Cataroux-Bâtiment B80, 8 rue de la Grolière, 63100 Clermont-Ferrand, France
| | - Sophie Duquesne
- Toulouse Biotechnology Institute, TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France, 135, avenue de Rangueil, F-31077 Toulouse Cedex 04, France
| | - Frédérique Guillamot
- Carbios, Parc Cataroux-Bâtiment B80, 8 rue de la Grolière, 63100 Clermont-Ferrand, France
| | - Henri Cramail
- Université Bordeaux, CNRS, Bordeaux INP, LCPO, 16 Avenue Pey-Berland, 33600 Pessac, France
| | - Daniel Taton
- Université Bordeaux, CNRS, Bordeaux INP, LCPO, 16 Avenue Pey-Berland, 33600 Pessac, France
| | - Alain Marty
- Carbios, Parc Cataroux-Bâtiment B80, 8 rue de la Grolière, 63100 Clermont-Ferrand, France
| | - Isabelle André
- Toulouse Biotechnology Institute, TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France, 135, avenue de Rangueil, F-31077 Toulouse Cedex 04, France
| |
Collapse
|
4
|
Recent Advances in Biological Recycling of Polyethylene Terephthalate (PET) Plastic Wastes. Bioengineering (Basel) 2022; 9:bioengineering9030098. [PMID: 35324787 PMCID: PMC8945055 DOI: 10.3390/bioengineering9030098] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/19/2022] [Accepted: 02/23/2022] [Indexed: 11/24/2022] Open
Abstract
Polyethylene terephthalate (PET) is one of the most commonly used polyester plastics worldwide but is extremely difficult to be hydrolyzed in a natural environment. PET plastic is an inexpensive, lightweight, and durable material, which can readily be molded into an assortment of products that are used in a broad range of applications. Most PET is used for single-use packaging materials, such as disposable consumer items and packaging. Although PET plastics are a valuable resource in many aspects, the proliferation of plastic products in the last several decades have resulted in a negative environmental footprint. The long-term risk of released PET waste in the environment poses a serious threat to ecosystems, food safety, and even human health in modern society. Recycling is one of the most important actions currently available to reduce these impacts. Current clean-up strategies have attempted to alleviate the adverse impacts of PET pollution but are unable to compete with the increasing quantities of PET waste exposed to the environment. In this review paper, current PET recycling methods to improve life cycle and waste management are discussed, which can be further implemented to reduce plastics pollution and its impacts on health and environment. Compared with conventional mechanical and chemical recycling processes, the biotechnological recycling of PET involves enzymatic degradation of the waste PET and the followed bioconversion of degraded PET monomers into value-added chemicals. This approach creates a circular PET economy by recycling waste PET or upcycling it into more valuable products with minimal environmental footprint.
Collapse
|
5
|
Li R, Vedelaar T, Mzyk A, Morita A, Padamati SK, Schirhagl R. Following Polymer Degradation with Nanodiamond Magnetometry. ACS Sens 2022; 7:123-130. [PMID: 34982542 PMCID: PMC8809337 DOI: 10.1021/acssensors.1c01782] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 12/14/2021] [Indexed: 01/07/2023]
Abstract
Degradable polymers are widely used in the biomedical fields due to non-toxicity and great biocompatibility and biodegradability, and it is crucial to understand how they degrade. These polymers are exposed to various biochemical media in medical practice. Hence, it is important to precisely follow the degradation of the polymer in real time. In this study, we made use of diamond magnetometry for the first time to track polymer degradation with nanoscale precision. The method is based on a fluorescent defect in nanodiamonds, which changes its optical properties based on its magnetic surrounding. Since optical signals can be read out more sensitively than magnetic signals, this method allows unprecedented sensitivity. We used a specific mode of diamond magnetometry called relaxometry or T1 measurements. These are sensitive to magnetic noise and thus can detect paramagnetic species (gadolinium in this case). Nanodiamonds were incorporated into polylactic acid (PLA) films and PLA nanoparticles in order to follow polymer degradation. However, in principle, they can be incorporated into other polymers too. We found that T1 constants decreased gradually with the erosion of the film exposed to an alkaline condition. In addition, the mobility of nanodiamonds increased, which allows us to estimate polymer viscosity. The degradation rates obtained using this approach were in good agreement with data obtained by quartz crystal microbalance, Fourier-transform infrared spectroscopy, and atomic force microscopy.
Collapse
Affiliation(s)
- Runrun Li
- Groningen
University, University Medical Center Groningen, Antonius Deusinglaan 1, Groningen 9713 AW, The Netherlands
| | - Thea Vedelaar
- Groningen
University, University Medical Center Groningen, Antonius Deusinglaan 1, Groningen 9713 AW, The Netherlands
| | - Aldona Mzyk
- Groningen
University, University Medical Center Groningen, Antonius Deusinglaan 1, Groningen 9713 AW, The Netherlands
- Institute
of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta 25, Krakow 30-059, Poland
| | - Aryan Morita
- Groningen
University, University Medical Center Groningen, Antonius Deusinglaan 1, Groningen 9713 AW, The Netherlands
- Dept.
Dental Biomedical Sciences, Faculty of Dentistry, Universitas Gadjah Mada, Jalan Denta 1, Sekip Utara, Yogyakarta 55281, Indonesia
| | - Sandeep Kumar Padamati
- Groningen
University, University Medical Center Groningen, Antonius Deusinglaan 1, Groningen 9713 AW, The Netherlands
| | - Romana Schirhagl
- Groningen
University, University Medical Center Groningen, Antonius Deusinglaan 1, Groningen 9713 AW, The Netherlands
| |
Collapse
|
6
|
Boneta S, Arafet K, Moliner V. QM/MM Study of the Enzymatic Biodegradation Mechanism of Polyethylene Terephthalate. J Chem Inf Model 2021; 61:3041-3051. [PMID: 34085821 PMCID: PMC8576761 DOI: 10.1021/acs.jcim.1c00394] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
![]()
The
environmental problems derived from the generalized plastic
consumption and disposal could find a friendly solution in enzymatic
biodegradation. Recently, two hydrolases from Ideonella sakaiensis 201-F6 and the metagenome-derived leaf-branch compost cutinase (LCC),
more specially the improved ICCG variant, have revealed degradation
activity toward poly ethylene terephthalate (PET). In the present
study, the reaction mechanism of this polymer breakage is studied
at an atomic level by multiscale QM/MM molecular dynamics simulations,
using semiempirical and DFT Hamiltonians to describe the QM region.
The obtained free energy surfaces confirmed a characteristic four-step
path for both systems, with activation energies in agreement with
the experimental observations. Structural analysis of the evolution
of the active site along the reaction progress and the study of electrostatic
effects generated by the proteins reveal the similarity in the behavior
of the active site of these two enzymes. The origin of the apparent
better performance of the LCC-ICCG protein over PETase must be due
to its capabilities of working at higher temperature and its intrinsic
relationship with the crystallinity grade of the polymer. Our results
may be useful for the development of more efficient enzymes in the
biodegradation of PET.
Collapse
Affiliation(s)
- Sergio Boneta
- Institute of Advanced Materials (INAM), Universitat Jaume I, 12071 Castelló, Spain.,Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Kemel Arafet
- Institute of Advanced Materials (INAM), Universitat Jaume I, 12071 Castelló, Spain
| | - Vicent Moliner
- Institute of Advanced Materials (INAM), Universitat Jaume I, 12071 Castelló, Spain
| |
Collapse
|
7
|
Performance, crystallization and rheological behavior of poly(lactic acid)/N-(2-hydroxyl) propyl-3-trimethyl ammonium chitosan chloride intercalated vermiculite grafted poly(acrylamide) nanocomposites. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2020.104791] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
8
|
Samak NA, Jia Y, Sharshar MM, Mu T, Yang M, Peh S, Xing J. Recent advances in biocatalysts engineering for polyethylene terephthalate plastic waste green recycling. ENVIRONMENT INTERNATIONAL 2020; 145:106144. [PMID: 32987219 DOI: 10.1016/j.envint.2020.106144] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 09/10/2020] [Accepted: 09/13/2020] [Indexed: 05/21/2023]
Abstract
The massive waste of poly(ethylene terephthalate) (PET) that ends up in the landfills and oceans and needs hundreds of years for degradation has attracted global concern. The poor stability and productivity of the available PET biocatalysts hinder their industrial applications. Active PET biocatalysts can provide a promising avenue for PET bioconversion and recycling. Therefore, there is an urgent need to develop new strategies that could enhance the stability, catalytic activity, solubility, productivity, and re-usability of these PET biocatalysts under harsh conditions such as high temperatures, pH, and salinity. This has raised great attention in using bioengineering strategies to improve PET biocatalysts' robustness and catalytic behavior. Herein, historical and forecasting data of plastic production and disposal were critically reviewed. Challenges facing the PET degradation process and available strategies that could be used to solve them were critically highlighted and summarized. In this review, we also discussed the recent progress in enzyme bioengineering approaches used for discovering new PET biocatalysts, elucidating the degradation mechanism, and improving the catalytic performance, solubility, and productivity, critically assess their strength and weakness and highlighting the gaps of the available data. Discovery of more potential PET hydrolases and studying their molecular mechanism extensively via solving their crystal structure will widen this research area to move forward the industrial application. A deeper knowledge of PET molecular and degradation mechanisms will give great insight into the future identification of related enzymes. The reported bioengineering strategies during this review could be used to reduce PET crystallinity and to increase the operational temperature of PET hydrolyzing enzymes.
Collapse
Affiliation(s)
- Nadia A Samak
- CAS Key Laboratory of Green Process and Engineering & State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; College of Chemical Engineering, University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 100049, PR China; Processes Design and Development Department, Egyptian Petroleum Research Institute, Nasr City, 11727 Cairo, Egypt
| | - Yunpu Jia
- CAS Key Laboratory of Green Process and Engineering & State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; College of Chemical Engineering, University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 100049, PR China
| | - Moustafa M Sharshar
- CAS Key Laboratory of Green Process and Engineering & State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; College of Chemical Engineering, University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 100049, PR China
| | - Tingzhen Mu
- CAS Key Laboratory of Green Process and Engineering & State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Maohua Yang
- CAS Key Laboratory of Green Process and Engineering & State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Sumit Peh
- CAS Key Laboratory of Green Process and Engineering & State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; College of Chemical Engineering, University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 100049, PR China
| | - Jianmin Xing
- CAS Key Laboratory of Green Process and Engineering & State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; College of Chemical Engineering, University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing 100049, PR China.
| |
Collapse
|
9
|
Carr CM, Clarke DJ, Dobson ADW. Microbial Polyethylene Terephthalate Hydrolases: Current and Future Perspectives. Front Microbiol 2020; 11:571265. [PMID: 33262744 PMCID: PMC7686037 DOI: 10.3389/fmicb.2020.571265] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 10/19/2020] [Indexed: 12/18/2022] Open
Abstract
Plastic has rapidly transformed our world, with many aspects of human life now relying on a variety of plastic materials. Biological plastic degradation, which employs microorganisms and their degradative enzymes, has emerged as one way to address the unforeseen consequences of the waste streams that have resulted from mass plastic production. The focus of this review is microbial hydrolase enzymes which have been found to act on polyethylene terephthalate (PET) plastic. The best characterized examples are discussed together with the use of genomic and protein engineering technologies to obtain PET hydrolase enzymes for different applications. In addition, the obstacles which are currently limiting the development of efficient PET bioprocessing are presented. By continuing to study the possible mechanisms and the structural elements of key enzymes involved in microbial PET hydrolysis, and by assessing the ability of PET hydrolase enzymes to work under practical conditions, this research will help inform large-scale waste management operations. Finally, the contribution of microbial PET hydrolases in creating a potential circular PET economy will be explored. This review combines the current knowledge on enzymatic PET processing with proposed strategies for optimization and use, to help clarify the next steps in addressing pollution by PET and other plastics.
Collapse
Affiliation(s)
- Clodagh M. Carr
- School of Microbiology, University College Cork, Cork, Ireland
| | - David J. Clarke
- School of Microbiology, University College Cork, Cork, Ireland
| | - Alan D. W. Dobson
- School of Microbiology, University College Cork, Cork, Ireland
- SSPC-SFI Research Centre for Pharmaceuticals, University College Cork, Cork, Ireland
| |
Collapse
|
10
|
Du B, Yin H, Chen Y, Lin W, Wang Y, Zhao D, Wang G, He X, Li J, Li Z, Luo F, Tan H, Fu Q. A waterborne polyurethane 3D scaffold containing PLGA with a controllable degradation rate and an anti-inflammatory effect for potential applications in neural tissue repair. J Mater Chem B 2020; 8:4434-4446. [PMID: 32367107 DOI: 10.1039/d0tb00656d] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
3D connected porous LGPU scaffolds with adjustable degradation and a strong anti-inflammatory effect were prepared for neural tissue repair.
Collapse
|
11
|
Matsumoto K, Kageyama Y. Increased Production and Molecular Weight of Artificial Polyhydroxyalkanoate Poly(2-hydroxybutyrate) Above the Glass Transition Temperature Threshold. Front Bioeng Biotechnol 2019; 7:177. [PMID: 31428606 PMCID: PMC6689969 DOI: 10.3389/fbioe.2019.00177] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 07/09/2019] [Indexed: 11/13/2022] Open
Abstract
Poly(2-hydroxybutyrate) [P(2HB)] is an artificial polyhydroxyalkanoate (PHA) synthesized using engineered 2-hydroxyalkanoate-polymerizing PHA synthase. In the present study, the effect of temperature on P(2HB) synthesis was investigated. Recombinant Escherichia coli harboring PHA synthetic genes were cultivated with 2HB and 3-hydroxybutyrate (3HB) supplementation at varied temperatures ranging from 24 to 36°C for the synthesis of P(2HB) and natural PHA P(3HB), respectively. P(2HB) production and its molecular weight increased considerably at a threshold temperature of 32-34°C. The trend was not observed during the synthesis of P(3HB). Notably, the threshold temperature was close to the glass transition temperature (T g) of P(2HB) (30°C), while the T g of P(3HB) (4°C) was much lower than the cultivation temperature. The results suggest that thermal motion of the polymer chains influenced the production and molecular weight of the obtained polymer. According to the results, the production and molecular weight of PHA drastically changes at the threshold temperature, which is linked to the T g of the polymer. The hypothesis should be applicable to PHAs in general, and potentially explains the inability to biosynthesize high-molecular-weight polylactate homopolymer with a T g of 60°C.
Collapse
Affiliation(s)
- Ken'ichiro Matsumoto
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo, Japan
| | - Yuki Kageyama
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo, Japan
| |
Collapse
|
12
|
He L, Zhong J, Zhu C, Liu X. Mechanical properties and in vitrodegradation behavior of additively manufactured phosphate glass particles/fibers reinforced polylactide. J Appl Polym Sci 2019. [DOI: 10.1002/app.48171] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Lizhe He
- University of Nottingham Ningbo China Ningbo 315100 China
| | - Jiahui Zhong
- University of Nottingham Ningbo China Ningbo 315100 China
| | - Chenkai Zhu
- University of Nottingham Ningbo China Ningbo 315100 China
| | - Xiaoling Liu
- University of Nottingham Ningbo China Ningbo 315100 China
| |
Collapse
|
13
|
Current knowledge on enzymatic PET degradation and its possible application to waste stream management and other fields. Appl Microbiol Biotechnol 2019; 103:4253-4268. [PMID: 30957199 PMCID: PMC6505623 DOI: 10.1007/s00253-019-09717-y] [Citation(s) in RCA: 235] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/20/2019] [Accepted: 02/22/2019] [Indexed: 11/21/2022]
Abstract
Enzymatic hydrolysis of polyethylene terephthalate (PET) has been the subject of extensive previous research that can be grouped into two categories, viz. enzymatic surface modification of polyester fibers and management of PET waste by enzymatic hydrolysis. Different enzymes with rather specific properties are required for these two processes. Enzymatic surface modification is possible with several hydrolases, such as lipases, carboxylesterases, cutinases, and proteases. These enzymes should be designated as PET surface–modifying enzymes and should not degrade the building blocks of PET but should hydrolyze the surface polymer chain so that the intensity of PET is not weakened. Conversely, management of PET waste requires substantial degradation of the building blocks of PET; therefore, only a limited number of cutinases have been recognized as PET hydrolases since the first PET hydrolase was discovered by Müller et al. (Macromol Rapid Commun 26:1400–1405, 2005). Here, we introduce current knowledge on enzymatic degradation of PET with a focus on the key class of enzymes, PET hydrolases, pertaining to the definition of enzymatic requirements for PET hydrolysis, structural analyses of PET hydrolases, and the reaction mechanisms. This review gives a deep insight into the structural basis and dynamics of PET hydrolases based on the recent progress in X-ray crystallography. Based on the knowledge accumulated to date, we discuss the potential for PET hydrolysis applications, such as in designing waste stream management.
Collapse
|
14
|
|
15
|
Kikkawa Y, Tanaka S, Norikane Y. Photo-triggered enzymatic degradation of biodegradable polymers. RSC Adv 2017. [DOI: 10.1039/c7ra10598c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Control over the initiation of enzymatic degradation of biodegradable polymers was demonstrated by tuning the solid-molten state of a surface coated azo-compound with light irradiation.
Collapse
Affiliation(s)
- Yoshihiro Kikkawa
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - Satoko Tanaka
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - Yasuo Norikane
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| |
Collapse
|
16
|
Luo H, Raciti D, Wang C, Herrera-Alonso M. Macromolecular Brushes as Stabilizers of Hydrophobic Solute Nanoparticles. Mol Pharm 2016; 13:1855-65. [PMID: 27035279 DOI: 10.1021/acs.molpharmaceut.6b00019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Macromolecular brushes bearing poly(ethylene glycol) and poly(d,l-lactide) side chains were used to stabilize hydrophobic solute nanoparticles formed by a rapid change in solvent quality. Unlike linear diblock copolymers with the same hydrophilic and hydrophobic block chemistries, the brush copolymer enabled the formation of ellipsoidal β-carotene nanoparticles, which in cosolvent mixtures developed into rod-like structures, resulting from a combination of Ostwald ripening and particle aggregation. The stabilizing ability of the copolymer was highly dependent on the mobility of the hydrophobic component, influenced by its molecular weight. As shown here, asymmetric amphiphilic macromolecular brushes of this type may be used as hydrophobic drug stabilizers and potentially assist the shape control of nonspherical aggregate morphologies.
Collapse
Affiliation(s)
- Hanying Luo
- Department of Materials Science and Engineering, Johns Hopkins University , Baltimore, Maryland 21218, United States
| | - David Raciti
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University , Baltimore, Maryland 21218, United States
| | - Chao Wang
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University , Baltimore, Maryland 21218, United States
| | - Margarita Herrera-Alonso
- Department of Materials Science and Engineering, Johns Hopkins University , Baltimore, Maryland 21218, United States
| |
Collapse
|
17
|
A novel Ca2+-activated, thermostabilized polyesterase capable of hydrolyzing polyethylene terephthalate from Saccharomonospora viridis AHK190. Appl Microbiol Biotechnol 2014; 98:10053-64. [DOI: 10.1007/s00253-014-5860-y] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 05/27/2014] [Indexed: 10/25/2022]
|
18
|
Shinozaki Y, Kikkawa Y, Sato S, Fukuoka T, Watanabe T, Yoshida S, Nakajima-Kambe T, Kitamoto HK. Enzymatic degradation of polyester films by a cutinase-like enzyme from Pseudozyma antarctica: surface plasmon resonance and atomic force microscopy study. Appl Microbiol Biotechnol 2013; 97:8591-8. [DOI: 10.1007/s00253-012-4673-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 12/17/2012] [Accepted: 12/19/2012] [Indexed: 10/27/2022]
|
19
|
RETRACTED ARTICLE Recent progress in AFM studies of biodegradable poly(lactic acid) materials. CHINESE SCIENCE BULLETIN-CHINESE 2012. [DOI: 10.1007/s11434-012-5052-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
20
|
|
21
|
Koo D, Du A, Palmese GR, Cairncross RA. Moisture management of polylactides: The effect of heat treatment. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.01.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
22
|
Jamshidian M, Arab Tehrany E, Cleymand F, Leconte S, Falher T, Desobry S. Effects of synthetic phenolic antioxidants on physical, structural, mechanical and barrier properties of poly lactic acid film. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.09.089] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
23
|
Hu Y, Fu X, Chen XD, Yang J, Yang LS, Zhang MQ. Association behaviors between carboxymethyl cellulose and polylactic acid revealed by resonance light scattering spectra. Polym Bull (Berl) 2009. [DOI: 10.1007/s00289-008-0032-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
24
|
Narladkar A, Balnois E, Vignaud G, Grohens Y. Difference in Glass Transition Behavior Between Semi Crystalline and Amorphous poly(lactic acid) Thin Films. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/masy.200851321] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
25
|
Narladkar A, Balnois E, Vignaud G, Grohens Y, Bardeau JF. Morphology and glass transition of thin polylactic acid films. POLYM ENG SCI 2008. [DOI: 10.1002/pen.20957] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
26
|
Li X, Zhang H, Li H, Tang G, Zhao Y, Yuan X. Self-accelerated biodegradation of electrospun poly(ethylene glycol)–poly(l-lactide) membranes by loading proteinase K. Polym Degrad Stab 2008. [DOI: 10.1016/j.polymdegradstab.2008.01.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
27
|
Luo C, Huang W, Wang H, Han Y. Formation of nonextinct ring-banded textures and multistacked lamella of tetra-aniline-block-poly(L-lactide) rod-coil diblock oligomer films induced by solvent vapor treatment. J Chem Phys 2007; 127:244903. [DOI: 10.1063/1.2812958] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
28
|
Duan Y, Liu J, Sato H, Zhang J, Tsuji H, Ozaki Y, Yan S. Molecular Weight Dependence of the Poly(l-lactide)/Poly(d-lactide) Stereocomplex at the Air−Water Interface. Biomacromolecules 2006; 7:2728-35. [PMID: 17025346 DOI: 10.1021/bm060043t] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The molecular weight dependence of poly(L-lactide)/poly(D-lactide) (PLLA/PDLA) stereocomplex behavior at the air-water interface was studied by surface pressure-area (pi-A) isotherms and atomic force microscopy (AFM). It was found that the compression-induced sterecomplexation of a PDLA/PLLA equimolar blend with high molecular weight (M(w) = 1 x 10(6) and 9.8 x 10(5), respectively) could occur at the air-water interface. This result is in marked contrast with the stereocomplexation of PDLA/PLLA blends in the bulk from the melt or in solutions, where the homocrystallites of either PLLA or PDLA rather than stereocomplex crystallites will be formed preferentially when the molecular weights of both polymers are higher than 1 x 10(5). Unexpectedly, the Langmuir-Blodgett behavior of the PDLA/PLLA blend with lower molecular weight (M(w) = 4 x 10(3) and 3.2 x 10(3), respectively), which should be favored in the stereocomplex, was distinct from that of other higher molecular weight blends. AFM images clearly disclosed for the first time the morphological changes of the equimolar blends of PLLA and PDLA at the air-water interface induced by increasing the surface pressure of the monolayer. Of particular note, the bilayer mechanism for the plateau in the isotherm was directly verified by the AFM height images.
Collapse
Affiliation(s)
- Yongxin Duan
- State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
29
|
Müller RJ, Schrader H, Profe J, Dresler K, Deckwer WD. Enzymatic Degradation of Poly(ethylene terephthalate): Rapid Hydrolyse using a Hydrolase fromT. fusca. Macromol Rapid Commun 2005. [DOI: 10.1002/marc.200500410] [Citation(s) in RCA: 277] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
30
|
Yamashita K, Kikkawa Y, Kurokawa K, Doi Y. Enzymatic Degradation of Poly(l-lactide) Film by Proteinase K: Quartz Crystal Microbalance and Atomic Force Microscopy Study. Biomacromolecules 2005; 6:850-7. [PMID: 15762651 DOI: 10.1021/bm049395v] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Enzymatic degradation of the poly(L-lactide) (PLLA) amorphous film by proteinase K has been investigated by combination of the complementary techniques of quartz crystal microbalance and atomic force microscopy (AFM). The erosion rate increased with increasing enzyme concentrations and attained to be constant under the condition of [proteinase K] > 100 microg/mL. The amount of the enzyme molecules adsorbed to the film was quantitatively evaluated at various concentrations by AFM, and it revealed that the erosion rate is determined by the amount of adsorbed enzyme. Adsorption of proteinase K was irreversible despite lack of the binding domain, so that the enzyme molecules on the film surface could be observed directly by AFM. Transformation of the enzyme molecule caused by packing in high density on the surface was observed at higher enzyme concentrations. The "footprint" of the individual proteinase K molecule on the PLLA film after enzymatic degradation suggests that the enzyme moves on the surface to hydrolyze the film around it.
Collapse
Affiliation(s)
- Koichi Yamashita
- Advanced Development & Supporting Center, RIKEN Institute, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198 Japan.
| | | | | | | |
Collapse
|