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Wu Y, Hu Q, Che Y, Niu Z. Opportunities and challenges for plastic depolymerization by biomimetic catalysis. Chem Sci 2024; 15:6200-6217. [PMID: 38699266 PMCID: PMC11062090 DOI: 10.1039/d4sc00070f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 03/20/2024] [Indexed: 05/05/2024] Open
Abstract
Plastic waste has imposed significant burdens on the environment. Chemical recycling allows for repeated regeneration of plastics without deterioration in quality, but often requires harsh reaction conditions, thus being environmentally unfriendly. Enzymatic catalysis offers a promising solution for recycling under mild conditions, but it faces inherent limitations such as poor stability, high cost, and narrow substrate applicability. Biomimetic catalysis may provide a new avenue by combining high enzyme-like activity with the stability of inorganic materials. Biomimetic catalysis has demonstrated great potential in biomass conversion and has recently shown promising progress in plastic degradation. This perspective discusses biomimetic catalysis for plastic degradation from two perspectives: the imitation of the active centers and the imitation of the substrate-binding clefts. Given the chemical similarity between biomass and plastics, relevant work is also included in the discussion to draw inspiration. We conclude this perspective by highlighting the challenges and opportunities in achieving sustainable plastic recycling via a biomimetic approach.
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Affiliation(s)
- Yanfen Wu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University Beijing 100084 China
| | - Qikun Hu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University Beijing 100084 China
| | - Yizhen Che
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University Beijing 100084 China
| | - Zhiqiang Niu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University Beijing 100084 China
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2
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Bose I, Bahrami F, Zhao Y. Artificial Esterase for Cooperative Catalysis of Ester Hydrolysis at pH 7. MATERIALS TODAY. CHEMISTRY 2023; 30:101576. [PMID: 37997572 PMCID: PMC10665026 DOI: 10.1016/j.mtchem.2023.101576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
Ester is one of the most prevalent functional groups in natural and man-made products. Natural esterases hydrolyze nonactivated alkyl esters readily but artificial esterases generally use highly activated p-nitrophenyl esters as substrates. We report synthetic esterases constructed through molecular imprinting in cross-linked micelles. The water-soluble nanoparticle catalysts contain a thiouronium cation to mimic the oxyanion hole and a nearby base to assist the hydrolysis. Whereas this catalytic motif readily affords large rate acceleration for the hydrolysis of p-nitrophenyl hexanoate, nonactivated cyclopentyl hexanoate demands catalytic groups that can generate a strong nucleophile (hydroxide) in the active site. The hydroxide is stabilized by the protonated base when the external solution is at pH 7, enabling the hydrolysis of activated and nonactivated esters under neutral conditions.
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Affiliation(s)
- Ishani Bose
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA
| | - Foroogh Bahrami
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA
| | - Yan Zhao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA
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3
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Arifuzzaman MD, Zhao Y. Selective Hydrolysis of Nonactivated Aryl Esters at pH 7 through Cooperative Catalysis. J Org Chem 2023; 88:3282-3287. [PMID: 36795622 PMCID: PMC10183976 DOI: 10.1021/acs.joc.2c02570] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Most reported artificial esterases only hydrolyze highly activated substrates. We here report synthetic catalysts that hydrolyze nonactivated aryl esters at pH 7, via cooperative action of a thiourea group that mimics the oxyanion hole of a serine protease and a nearby nucleophilic/basic pyridyl group. The molecularly imprinted active site distinguishes subtle structural changes in the substrate, including elongation of the acyl chain by two carbons or shift of a remote methyl group by one carbon.
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Affiliation(s)
- M D Arifuzzaman
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, United States
| | - Yan Zhao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, United States
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Kurosawa Y, Goto S, Mitsuya K, Otsuka Y, Yokoyama H. Interaction mode of hydroxypropyl-β-cyclodextrin with vaccine adjuvant components Tween 80 and Triton X-100 revealed by fluorescence increasing-quenching analysis. Phys Chem Chem Phys 2023; 25:6203-6213. [PMID: 36753064 DOI: 10.1039/d3cp00094j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The nonionic surfactants Tween 80 (Tw80) and Triton X-100 (TX100), which are used as components of adjuvants, were used with bovine serum albumin (BSA) and hydroxfypropyl-β-cyclodextrin (HP-β-CD) as model antigens. The interaction patterns of Tw80 and TX100 with the hydrophobic cores of the model antigens were investigated. The fluorescence of 8-anilinonaphthalene-1-sulfonic acid (ANS), a hydrophobic fluorescent probe, was used to evaluate the effect of surfactants on each model antigen. A Hanes Woolf plot was used to analyze the adsorption of ANS to BSA, and an activator-inhibitor model was used to analyze the concentration-dependent increase and decrease of ANS fluorescence intensity. For BSA, TX100 occupies the ANS binding site inside the BSA hydrophobic core, while Tw80 does not contribute to the ANS binding site in the hydrophobic core. For HP-β-CD, the ANS concentration required for analyzable fluorescence intensity extended to the range where ANS concentration-dependent quenching was not negligible. Using the activator inhibitor model, we were able to separate the activators and inhibitors of ANS fluorescence and evaluate the affinity of ANS for HP-β-CD and surfactants. The results obtained showed that TX100 provided a hydrophobic environment to the ANS while being encapsulated by HP-β-CD, while Tw80 did not interact with HP-β-CD and provided a hydrophobic environment to the ANS independently of each other. The interpretations obtained were corroborated by the determination of the CMC of TX100 and Tw80, the effect of salt on ANS fluorescence, and 1H-NMR and ROESY. In summary, the results showed that the large hydrophilic head of Tween, composed of sorbitan and PEG chains, floated in the aqueous phase like a balloon, while Triton pierced the hydrophobic core of the antigen like a spear. In both BSA and HP-β-CD model antigens, TX100 impinged on the hydrophobic core.
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Affiliation(s)
- Yuya Kurosawa
- Faculty of Pharmaceutical Sciences, Division of Colloid and Surface Science, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamasaki, Noda, Chiba, 278-8510, Japan.
| | - Satoru Goto
- Faculty of Pharmaceutical Sciences, Division of Colloid and Surface Science, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamasaki, Noda, Chiba, 278-8510, Japan.
| | - Kengo Mitsuya
- Faculty of Pharmaceutical Sciences, Division of Colloid and Surface Science, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamasaki, Noda, Chiba, 278-8510, Japan.
| | - Yuta Otsuka
- Faculty of Pharmaceutical Sciences, Division of Colloid and Surface Science, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamasaki, Noda, Chiba, 278-8510, Japan.
| | - Hideshi Yokoyama
- Faculty of Pharmaceutical Sciences, Division of Colloid and Surface Science, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamasaki, Noda, Chiba, 278-8510, Japan.
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Liu N, Li SB, Zheng YZ, Xu SY, Shen JS. Minimalistic Artificial Catalysts with Esterase-Like Activity from Multivalent Nanofibers Formed by the Self-Assembly of Dipeptides. ACS OMEGA 2023; 8:2491-2500. [PMID: 36687071 PMCID: PMC9851029 DOI: 10.1021/acsomega.2c06972] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Imitating and incorporating the multiple key structural features observed in natural enzymes into a minimalistic molecule to develop an artificial catalyst with outstanding catalytic efficiency is an attractive topic for chemists. Herein, we designed and synthesized one class of minimalistic dipeptide molecules containing a terminal -SH group and a terminal His-Phe dipeptide head linked by a hydrophobic alkyl chain with different lengths, marked as HS-C n+1-His-Phe (n = 4, 7, 11, 15, and 17; n + 1 represents the carbon atom number of the alkyl chain). The His (-imidazole), Phe (-CO2 -) moieties, the terminal -SH group, and a long hydrophobic alkyl chain were found to have important contributions to achieve high binding ability leading to outstanding absolute catalytic efficiency (k cat/K M) toward the hydrolysis reactions of carboxylic ester substrates.
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Affiliation(s)
- Ning Liu
- Xiamen
Key Laboratory of Optoelectronic Materials and Advanced Manufacturing,
College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Shuai-Bing Li
- Xiamen
Key Laboratory of Optoelectronic Materials and Advanced Manufacturing,
College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China
| | - Yan-Zhen Zheng
- College
of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Su-Ying Xu
- State
Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory
of Environmentally Harmful Chemical Analysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jiang-Shan Shen
- Xiamen
Key Laboratory of Optoelectronic Materials and Advanced Manufacturing,
College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, China
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Silva RD, Carvalho LT, Moraes RM, Medeiros SDF, Lacerda TM. Biomimetic Biomaterials Based on Polysaccharides: Recent Progress and Future Perspectives. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202100501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Rodrigo Duarte Silva
- Nanotechnology National Laboratory for Agriculture (LNNA) Embrapa Instrumentation Rua XV de Novembro 1452 São Carlos SP 13560‐970 Brazil
| | - Layde Teixeira Carvalho
- Department of Chemical Engineering Engineering School of Lorena University of São Paulo (EEL‐USP) Lorena SP 12602‐810 Brazil
| | - Rodolfo Minto Moraes
- Department of Material Engineering Engineering School of Lorena University of São Paulo, (EEL‐USP) Lorena SP 12602‐810 Brazil
| | - Simone de Fátima Medeiros
- Department of Chemical Engineering Engineering School of Lorena University of São Paulo (EEL‐USP) Lorena SP 12602‐810 Brazil
| | - Talita Martins Lacerda
- Department of Biotechnology Engineering School of Lorena University of São Paulo (EEL‐USP) Lorena SP 12602‐810 Brazil
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Wang K, Chen K, Prior TJ, Feng X, Redshaw C. Pd-Immobilized Schiff Base Double-Layer Macrocycle: Synthesis, Structures, Peroxidase Mimic Activity, and Antibacterial Performance. ACS APPLIED MATERIALS & INTERFACES 2022; 14:1423-1433. [PMID: 34967596 DOI: 10.1021/acsami.1c19795] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Di-, tri-, and tetra-aldehydes have been employed to access new [2 + 2] [2 + 3] and [2 + 4] double-layer Schiff base macrocycles. The [2 + 3] compound has been used for the immobilization of Pd and the resulting composite has been employed as a peroxidase-like mimetic using 3,3',5,5'-tetramethylbenzidine (TMB) as the substrate; the optimum conditions together with the catalytic kinetics of the enzyme-like activity is discussed. Based on the peroxidase-like catalytic activity, the Pd@Schiff base composite was found to exhibit excellent bactericidal activity against both Escherichia coli (Gram-negative bacterium) and Staphylococcus aureus (Gram-positive bacterium) in the presence of relatively low concentrations of H2O2. Furthermore, cytotoxicity measurements illustrate the biosafety of the Pd composite. The above-mentioned findings have the potential to guide the innovation of new Pd-based composites as enzyme mimetics and antibacterial materials.
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Affiliation(s)
- Kuiyuan Wang
- Department of Chemistry, University of Hull, Hull HU6 7RX, U.K
| | - Kai Chen
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, P. R. China
| | - Timothy J Prior
- Department of Chemistry, University of Hull, Hull HU6 7RX, U.K
| | - Xing Feng
- School of Chemistry and Chemical Engineering, Department of Chemistry, Harbin Institute of Technology, Harbin 150040, P. R. China
| | - Carl Redshaw
- Department of Chemistry, University of Hull, Hull HU6 7RX, U.K
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Yuan DQ, Tominaga T, Fukuda K, Koga K, Fukudome M. Three-in-one: Miniature Models of Natural Acyl-transfer Systems Enable Vector-selective Reaction on the Primary Side of Cyclodextrins. Chemistry 2021; 28:e202103940. [PMID: 34889479 DOI: 10.1002/chem.202103940] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Indexed: 11/09/2022]
Abstract
Miniature models of acyl-transfer systems in cells, which were composed by replacing the protein, coenzyme and substrate with CD, functional group, and CD, respectively, and combining them all together in one, displayed definite role-sharing and exact cooperation of the functional groups and hydrophobic cavity, and thus enabled the regio-specific reaction.
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Affiliation(s)
- De-Qi Yuan
- Kobe Gakuin University, Faculty of Pharmaceutical Sciences, 1-1-3 Minatojima, Chuoku, 650-0056, Kobe, JAPAN
| | - Tatsuro Tominaga
- Kobe Gakuin University, Graduate School of Pharmaceutical Sciences, JAPAN
| | - Koki Fukuda
- Kobe Gakuin University, Graduate School of Pharmaceutical Sciences, JAPAN
| | - Kazutaka Koga
- Daiichi University of Pharmacy: Daiichi Yakka Daigaku, Faculty of Pharmacy, JAPAN
| | - Makoto Fukudome
- Kobe Gakuin University: Kobe Gakuin Daigaku, Faculty of Pharmaceutical Sciences, JAPAN
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9
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Lyu Y, Scrimin P. Mimicking Enzymes: The Quest for Powerful Catalysts from Simple Molecules to Nanozymes. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01219] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yanchao Lyu
- University of Padova, Department of Chemical Sciences, via Marzolo, 1, 35131 Padova, Italy
| | - Paolo Scrimin
- University of Padova, Department of Chemical Sciences, via Marzolo, 1, 35131 Padova, Italy
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