1
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Xie Z, Cao B, Zhao J, Liu M, Lao Y, Luo H, Zhong Z, Xiong X, Wei W, Zou T. Ion Pairing Enables Targeted Prodrug Activation via Red Light Photocatalysis: A Proof-of-Concept Study with Anticancer Gold Complexes. J Am Chem Soc 2024; 146:8547-8556. [PMID: 38498689 DOI: 10.1021/jacs.4c00408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Photocatalysis has found increasing applications in biological systems, for example, in localized prodrug activation; however, high-energy light is usually required without giving sufficient efficiency and target selectivity. In this work, we report that ion pairing between photocatalysts and prodrugs can significantly improve the photoactivation efficiency and enable tumor-targeted activation by red light. This is exemplified by a gold-based prodrug (1d) functionalized with a morpholine moiety. Such a modification causes 1d to hydrolyze in aqueous solution, forming a cationic species that tightly interacts with anionic photosensitizers including Eosin Y (EY) and Rose Bengal (RB), along with a significant bathochromic shift of absorption tailing to the far-red region. As a result, a high photoactivation efficiency of 1d by EY or RB under low-energy light was found, leading to an effective release of active gold species in living cells, as monitored by a gold-specific biosensor (GolS-mCherry). Importantly, the morpholine moiety, with pKa ∼6.9, in 1d brings in a highly pH-sensitive and preferential ionic interaction under a slightly acidic condition over the normal physiological pH, enabling tumor-targeted prodrug activation by red light irradiation in vitro and in vivo. Since a similar absorption change was found in other morpholine/amine-containing clinic drugs, photocages, and precursors of reactive labeling intermediates, it is believed that the ion-pairing strategy could be extended for targeted activation of different prodrugs and for mapping of an acidic microenvironment by low-energy light.
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Affiliation(s)
- Zhiying Xie
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Bei Cao
- Warshel Institute for Computational Biology, and General Education Division, The Chinese University of Hong Kong, Shenzhen 518172, China
- School of Education Sciences, The Hong Kong University of Science and Technology (Guangzhou), Guangzhou 511453, China
| | - Jing Zhao
- State Key Laboratory of Coordination Chemistry, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Moyi Liu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Yuhan Lao
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Hejiang Luo
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Zhi Zhong
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Xiaolin Xiong
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Wei Wei
- State Key Laboratory of Coordination Chemistry, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Taotao Zou
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, State Key Laboratory of Anti-Infective Drug Discovery and Development, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, China
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2
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Sun P, Li K, Liu X, Wang J, Qiu X, Wei W, Zhao J. Peptide-mediated Aqueous Synthesis of NIR-II Emitting Ag 2 S Quantum Dots for Rapid Photocatalytic Bacteria Disinfection. Angew Chem Int Ed Engl 2023; 62:e202300085. [PMID: 36772842 DOI: 10.1002/anie.202300085] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 02/12/2023]
Abstract
Pathogenic microorganisms in the environment are a great threat to global human health. The development of disinfection method with rapid and effective antibacterial properties is urgently needed. In this study, a biomimetic silver binding peptide AgBP2 was introduced to develop a facile synthesis of biocompatible Ag2 S quantum dots (QDs). The AgBP2 capped Ag2 S QDs exhibited excellent fluorescent emission in the second near-infrared (NIR-II) window, with physical stability and photostability in the aqueous phase. Under 808 nm NIR laser irradiation, AgBP2-Ag2 S QDs can serve not only as a photothermal agent to realize NIR photothermal conversion but also as a photocatalyst to generate reactive oxygen species (ROS). The obtained AgBP2-Ag2 S QDs achieved a highly effective disinfection efficacy of 99.06 % against Escherichia coli within 25 min of NIR irradiation, which was ascribed to the synergistic effects of photogenerated ROS during photocatalysis and hyperthermia. Our work demonstrated a promising strategy for efficient bacterial disinfection.
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Affiliation(s)
- Peiqing Sun
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
- Shenzhen Research Institute, Nanjing University, Shenzhen, 518000, China
- Nanchuang (Jiangsu) Institute of Chemistry and Health, Nanjing, 210023, China
| | - Kunlun Li
- School of Life Sciences, Nanjing University, Nanjing, 210023, China
| | - Xiao Liu
- School of Life Sciences, Nanjing University, Nanjing, 210023, China
| | - Jing Wang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Xusheng Qiu
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, 210023, China
| | - Wei Wei
- School of Life Sciences, Nanjing University, Nanjing, 210023, China
- Shenzhen Research Institute, Nanjing University, Shenzhen, 518000, China
- Nanchuang (Jiangsu) Institute of Chemistry and Health, Nanjing, 210023, China
| | - Jing Zhao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
- Shenzhen Research Institute, Nanjing University, Shenzhen, 518000, China
- Nanchuang (Jiangsu) Institute of Chemistry and Health, Nanjing, 210023, China
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3
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Xie X, Yang K, Lu Y, Li Y, Yan J, Huang J, Xu L, Yang M, Yan Y. Broad-spectrum and effective rare earth enriching via Lanmodulin-displayed Yarrowia lipolytica. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129561. [PMID: 35999730 DOI: 10.1016/j.jhazmat.2022.129561] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 07/01/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
The traditional mining processes of rare earth elements (REEs) are accompanied by the production of a large number of acid mine drainage rich in REEs. A wide-adaptive, low-cost and environmentally friendly biosorbent is an attractive technology to enrich and recycle REEs from the liquid wastes. To construct a broad-spectrum and efficient biosorbent, a novel REEs-binding protein Lanmodulin (LanM) is successfully displayed on the cell surface of a fungus, Yarrowia lipolytica, for the first time, and the adsorption capacities for various REEs are studied. The LanM-displayed Y. lipolytica shows significantly enhanced adsorption capacities for multiple REEs, achieving the highest reported values of 49.83 ± 2.87 mg Yb /g DCW, 50.38 ± 1.46 mg Tm /g DCW, 49.94 ± 3.61 mg Er /g DCW and 48.72 ± 3.09 mg Tb/g DCW, respectively. Moreover, the LanM-displayed Y. lipolytica possesses a high selectivity for REEs over other common metal cations and excellent suitability under acidic conditions. The kinetics and equilibrium analysis of biosorption processes agree well with the pseudo-first kinetic and Langmuir isotherm model. Based on the FTIR and SEM-EDS analysis, the chelation with phosphate/carboxylate groups dominates the Yb binding in LanM-displayed cells, and LanM enhances the adsorption performances by introducing more binding sites with high selectivity towards a wide range of REEs. Thus, the LanM-displayed Y. lipolytica investigated in this study exhibits prosperous potential for the enriching/removal of REEs from acid mine drainage.
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Affiliation(s)
- Xiaoman Xie
- Key Lab of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Kaixin Yang
- Key Lab of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Yunpan Lu
- Key Lab of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Yunchong Li
- Key Lab of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Jinyong Yan
- Key Lab of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China.
| | - Jinsha Huang
- Key Lab of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Li Xu
- Key Lab of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Min Yang
- Key Lab of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Yunjun Yan
- Key Lab of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China.
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Li H, Luo J, Zhang ZY, Wei RJ, Xie M, Huang YL, Ning GH, Li D. Cyclic Trinuclear Copper(I) Complex Exhibiting Aggregation-Induced Emission: A Novel Fluorescent Probe for the Selective Detection of Gold(III) Ions. Inorg Chem 2022; 61:414-421. [PMID: 34929083 DOI: 10.1021/acs.inorgchem.1c03049] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Coordination complexes with aggregation-induced-emission (AIE) behavior has drawn much attention because of their promising applications. Conventionally, the AIE-active metal-organic complexes are prepared from an AIE-active organic ligand, and the construction of such coordination complexes from aggregation-caused-quenching (ACQ) ligands is still challenging. Herein, we have synthesized two new cyclic trinuclear complexes (CTCs), namely, 1 and 2, from copper(I) and silver(I) and a ACQ ligand [4-(3,5-dimethyl-1H-pyrazol-4-yl)benzaldehyde, HL]. (1) exhibited AIE behavior, and the emission intensity is enhanced ∼20 times when it aggregates, which can be attributed to its tight packing and multiple intermolecular hydrogen bonds that restrained the intramolecular rotation, as confirmed by single-crystal X-ray diffraction analysis. On the other hand, (2) displayed ACQ effects, and the emission intensity is decreased ∼5 times when it aggregates. This ACQ behavior of 2 is related to its loose packing and free rotation of the ligand in crystals, resulting in nonradiative decay and fluorescence quenching. Interestingly, the CTCs 1 and 2 both exhibited a good affinity to gold(III) ions, allowing selective detection and sensing of gold ions. More importantly, the 2 shows a good limit of detection (3.28 μmol/L) and an ultrafast responsive time (∼2 s). Our studies pave a new route to designing novel AIE-active coordination complexes and further exploring the functionality of CTCs.
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Affiliation(s)
- Haozhen Li
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Jie Luo
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Zhi-Yin Zhang
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Rong-Jia Wei
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Mo Xie
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Yong-Liang Huang
- Department of Chemistry, Shantou University Medical College, Shantou, Guangdong 515041, P. R. China
| | - Guo-Hong Ning
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
| | - Dan Li
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou, Guangdong 510632, P. R. China
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5
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Tsai ST, Cheng WJ, Zhang QX, Yeh YC. Gold-Specific Biosensor for Monitoring Wastewater Using Genetically Engineered Cupriavidus metallidurans CH34. ACS Synth Biol 2021; 10:3576-3582. [PMID: 34860511 DOI: 10.1021/acssynbio.1c00520] [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] [Indexed: 12/25/2022]
Abstract
Transcription factor-based whole-cell biosensors have recently become promising alternatives to conventional analytical methods due to their advantage of simplicity, cost-effectiveness, and environmental friendliness. In this study, we used genetic engineering to develop a whole-cell biosensor based on the activation of promoters by CupR via interactions with gold ions, leading to the expression of reporter genes that yield output signals. Altering the promoter sequences was shown to significantly improve the performance of the biosensor strain in terms of gold-specificity. The detection sensitivity of our engineered strains was 42-fold higher than that of wild-type strains. The linear range of the purposed sensor was 125-1000 nM with a limit of detection at 46.5 nM. The effectiveness of the sensor strain was verified in wastewater samples.
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Affiliation(s)
- Ssu-Tzu Tsai
- Department of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan
| | - Wen-Jui Cheng
- Department of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan
| | - Qian-Xian Zhang
- Department of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan
| | - Yi-Chun Yeh
- Department of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan
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6
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Zheng Y, Wei L, Duan L, Yang F, Huang G, Xiao T, Wei M, Liang Y, Yang H, Li Z, Wang D. Rapid field testing of mercury pollution by designed fluorescent biosensor and its cells-alginate hydrogel-based paper assay. J Environ Sci (China) 2021; 106:161-170. [PMID: 34210432 DOI: 10.1016/j.jes.2021.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/24/2020] [Accepted: 01/06/2021] [Indexed: 06/13/2023]
Abstract
With increasing industrial activities, mercury has been largely discharged into environment and caused serious environmental problems. The growing level of mercury pollution has become a huge threat to human health due to its significant biotoxicity. Therefore, the simple and fast means for on-site monitoring discharged mercury pollution are highly necessary to protect human beings from its pernicious effects in time. Herein, a "turn off" fluorescent biosensor (mCherry L199C) for sensing Hg2+ was successfully designed based on direct modification of the chromophore environment of fluorescent protein mCherry. For rapid screening and characterization, the designed variant of mCherry (mCherry L199C) was directly expressed on outer-membrane of Escherichia coli cells by cell surface display technique. The fluorescent biosensor was characterized to have favorable response to Hg2+ at micromole level among other metal ions and over a broad pH range. Further, the cells of the fluorescent biosensor were encapsulated in alginate hydrogel to develop the cells-alginate hydrogel-based paper. The cells-alginate hydrogel-based paper could detect mercury pollution in 5 min with simple operation process and inexpensive equipment, and it could keep fluorescence and activity stable at 4 °C for 24 hr, which would be a high-throughput screening tool in preliminarily reporting the presence of mercury pollution in natural setting.
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Affiliation(s)
- Yanan Zheng
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Liudan Wei
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Linwei Duan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‑Bioresources, Guangxi University, Nanning 530004, China
| | - Fangfang Yang
- Guangxi-ASEAN Food Inspection and Testing Center, China
| | - Guixiang Huang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Tianyi Xiao
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Min Wei
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Yanling Liang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Huiting Yang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Zhipeng Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‑Bioresources, Guangxi University, Nanning 530004, China.
| | - Dan Wang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China.
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7
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Chen Z, Wang D, Feng S, Liu H. An Imidazole Thione-Modified Polyhedral Oligomeric Silsesquioxane for Selective Detection and Adsorptive Recovery of Au(III) from Aqueous Solutions. ACS APPLIED MATERIALS & INTERFACES 2021; 13:23592-23605. [PMID: 33983708 DOI: 10.1021/acsami.1c01965] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Developing a material toward simultaneous detection and recovery of gold ions (Au(III)) is highly desirable for the economy and the environment. Herein, we report a highly efficient dual-function material for simultaneous Au(III) detection and recovery by simply introducing abundant imidazole thione and thioether groups in one system. This material, that is, an imidazole thione-modified polyhedral oligomeric silsesquioxane (POSS-2), was prepared by a mild reaction of an imidazolium-containing POSS and sulfur at ambient temperature. The POSS-2 suspension in water can rapidly and selectively detect Au(III) with a very low limit of detection of 1.2 ppb by fluorescence quenching or a visualized color change from white to dark orange. POSS-2 can also selectively and efficiently capture Au(III) with a maximum adsorption uptake of 1486.5 mg/g. The adsorption process well fits with the pseudo-second-order kinetic and Langmuir models. The intriguing dual-function performance is better than most of the previous Au(III) probes or adsorbents. The mechanism study reveals that the detection and adsorption behavior are mainly caused by the redox reaction and coordination between imidazole thione and thioether groups and Au(III). Furthermore, POSS-2 was successfully utilized to extract gold without interference from a discard CPU. These results indicate the potential application of the present dual-function material for Au(III) detection and recovery from aqueous solutions. More dual-functional materials could be designed and prepared by this simple strategy.
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Affiliation(s)
- Zixu Chen
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education & National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Dengxu Wang
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education & National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
- Shandong Key Laboratory of Advanced Organosilicon Materials and Technologies & State Key Laboratory of Fluorinated Functional Membrane Materials, Zibo 256401, P. R. China
| | - Shengyu Feng
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education & National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Hongzhi Liu
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education & National Engineering Research Center for Colloidal Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
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8
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Wang X, Wei W, Zhao J. Using a Riboswitch Sensor to Detect Co 2+/Ni 2+ Transport in E. coli. Front Chem 2021; 9:631909. [PMID: 33659237 PMCID: PMC7917058 DOI: 10.3389/fchem.2021.631909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 01/06/2021] [Indexed: 11/14/2022] Open
Abstract
Intracellular concentrations of essential mental ions must be tightly maintained to avoid metal deprivation and toxicity. However, their levels in cells are still difficult to monitor. In this report, the combination of a Co2+Ni2+-specific riboswitch and an engineered downstream mCherry fluorescent protein allowed a highly sensitive and selective whole-cell Co2+/Ni2+ detection process. The sensors were applied to examine the resistance system of Co2+/Ni2+ in E. coli, and the sensors were able to monitor the effects of genetic deletions. These results indicate that riboswitch-based sensors can be employed in the study of related cellular processes.
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Affiliation(s)
- Xiaoying Wang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
| | - Wei Wei
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
- School of Life Sciences, Nanjing University, Nanjing, China
| | - Jing Zhao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
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9
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Lin RL, Dong YP, Tang M, Liu Z, Tao Z, Liu JX. Selective Recovery and Detection of Gold with Cucurbit[n]urils (n = 5–7). Inorg Chem 2020; 59:3850-3855. [DOI: 10.1021/acs.inorgchem.9b03499] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Rui-Lian Lin
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China
| | - Yong-Ping Dong
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China
| | - Min Tang
- School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, China
| | - Zhichang Liu
- School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Jing-Xin Liu
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China
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10
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Engineered cells for selective detection and remediation of Hg2+ based on transcription factor MerR regulated cell surface displayed systems. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2019.107289] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Olmez TT, Sahin Kehribar E, Isilak ME, Lu TK, Seker UOS. Synthetic Genetic Circuits for Self-Actuated Cellular Nanomaterial Fabrication Devices. ACS Synth Biol 2019; 8:2152-2162. [PMID: 31419103 DOI: 10.1021/acssynbio.9b00235] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Genetically controlled synthetic biosystems are being developed to create nanoscale materials. These biosystems are modeled on the natural ability of living cells to synthesize materials: many organisms have dedicated proteins that synthesize a wide range of hard tissues and solid materials, such as nanomagnets and biosilica. We designed an autonomous living material synthesizing system consisting of engineered cells with genetic circuits that synthesize nanomaterials. The circuits encode a nanomaterial precursor-sensing module (sensor) coupled with a materials synthesis module. The sensor detects the presence of cadmium, gold, or iron ions, and this detection triggers the synthesis of the related nanomaterial-nucleating extracellular matrix. We demonstrate that when engineered cells sense the availability of a precursor ion, they express the corresponding extracellular matrix to form the nanomaterials. This proof-of-concept study shows that endowing cells with synthetic genetic circuits enables nanomaterial synthesis and has the potential to be extended to the synthesis of a variety of nanomaterials and biomaterials using a green approach.
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Affiliation(s)
- Tolga Tarkan Olmez
- UNAM- Institute of Materials and Nanotechnology, Bilkent University, Ankara, Turkey
| | - Ebru Sahin Kehribar
- UNAM- Institute of Materials and Nanotechnology, Bilkent University, Ankara, Turkey
| | - Musa Efe Isilak
- UNAM- Institute of Materials and Nanotechnology, Bilkent University, Ankara, Turkey
| | - Timothy K. Lu
- Synthetic Biology Center, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States
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12
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Wang D, Zheng Y, Fan X, Xu L, Pang T, Liu T, Liang L, Huang S, Xiao Q. Visual detection of Hg 2+ by manipulation of pyocyanin biosynthesis through the Hg 2+-dependent transcriptional activator MerR in microbial cells. J Biosci Bioeng 2019; 129:223-228. [PMID: 31492609 DOI: 10.1016/j.jbiosc.2019.08.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 08/09/2019] [Accepted: 08/10/2019] [Indexed: 01/16/2023]
Abstract
Mercury pollution has always been a huge threat to human health due to its significant toxicity. Thus, it's the continuing goal to obtain new mercury detection techniques that are cost-effective, operational stable, performance efficient, and applicable to the environmental and biological milieus. In this research, the soluble pigment pyocyanin with anti-bacterial and anti-fungal activities, the biosynthesis pathway of which was engineered under the regulation of Hg2+-dependent transcriptional activator MerR, was firstly used as the visual detection signal in the whole-cell biosensor. The engineered biosensor displayed optical sensing window and a good linearity for Hg2+ in the range of 25-1000 nM, and the detection limit could reach as low as 10 nM. It permitted on-site detection of bioavailable Hg2+ with extraordinary selectivity and could resist the interferences of extra metal ions. What's more, the developed biosensor performed function well in a wide pH range (pH 4-10) as well as the environmental water. By fully imitating and utilizing the biosystems from nature, the engineered colorimetric biosensor has great economic and performance advantages over most chemosensors as well as whole-cell biosensors in the practical application of detecting Hg2+ in the contaminated aquatic systems.
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Affiliation(s)
- Dan Wang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, PR China.
| | - Yanan Zheng
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, PR China
| | - Xiaosu Fan
- Experimental Center of College of Agriculture, Guangxi University, Nanning 530005, PR China
| | - Lina Xu
- Institute of Chemical Industry of Forestry Products, CAF, Nanjing 210042, PR China
| | - Ting Pang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, PR China
| | - Ting Liu
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, PR China
| | - Legui Liang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, PR China
| | - Shan Huang
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, PR China
| | - Qi Xiao
- College of Chemistry and Materials, Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, PR China
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13
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Zhu B, Chen Y, Wei N. Engineering Biocatalytic and Biosorptive Materials for Environmental Applications. Trends Biotechnol 2019; 37:661-676. [DOI: 10.1016/j.tibtech.2018.11.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 11/07/2018] [Accepted: 11/08/2018] [Indexed: 10/27/2022]
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14
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Yan L, Sun P, Xu Y, Zhang S, Wei W, Zhao J. Integration of a Gold-Specific Whole E. coli Cell Sensing and Adsorption Based on BioBrick. Int J Mol Sci 2018; 19:E3741. [PMID: 30477230 PMCID: PMC6321342 DOI: 10.3390/ijms19123741] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 11/20/2018] [Accepted: 11/22/2018] [Indexed: 11/17/2022] Open
Abstract
Detection and recovery of heavy metals from environmental sources is a major task in environmental protection and governance. Based on previous research into cell-based visual detection and biological adsorption, we have developed a novel system combining these two functions by the BioBrick technique. The gold-specific sensory gol regulon was assembled on the gold-chaperone GolB (Gold-specific binding protein), which is responsible for selectively absorbing gold ions, and this led to an integration system with increased probe tolerance for gold. After being incorporated into E. coli, this system featured high-selective detection and recycling of gold ions among multi-metal ions from the environment. It serves as an efficient method for biological detection and recovery of various heavy metals. We have developed modular methods for cell-based detection and adsorption of heavy metals, and these offer a quick and convenient tool for development in this area.
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Affiliation(s)
- Li Yan
- State Key Laboratory of Coordination Chemistry, Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Peiqing Sun
- State Key Laboratory of Coordination Chemistry, Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, China.
| | - Yun Xu
- State Key Laboratory of Coordination Chemistry, Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Shanbo Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China.
| | - Wei Wei
- State Key Laboratory of Coordination Chemistry, Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Jing Zhao
- State Key Laboratory of Coordination Chemistry, Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, China.
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15
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Cai S, Shen Y, Zou Y, Sun P, Wei W, Zhao J, Zhang C. Engineering highly sensitive whole-cell mercury biosensors based on positive feedback loops from quorum-sensing systems. Analyst 2018; 143:630-634. [PMID: 29271434 DOI: 10.1039/c7an00587c] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mercury contamination represents a global threat. A simple, sensitive, and rapid means of detecting trace mercury is urgently needed. Herein, we have developed a series of mercury biosensors by combining quorum sensing-based positive feedback systems with a mercury-specific operon, merR. Our results have demonstrated that the sensitivity and fluorescence intensity of the engineered E. coli cells were greatly improved thanks to the positive feedback system. In addition, by fitting the fluorescence signals to the classic Hill equation, we discovered that the responses of the engineered E. coli cells were close to ultrasensitive curves. Our work highlights quorum-sensing systems as a powerful tool in biosensor designs.
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Affiliation(s)
- Sheng Cai
- State Key Laboratory of Coordination Chemistry, Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing 210093, China.
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16
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Lead absorption mechanisms in bacteria as strategies for lead bioremediation. Appl Microbiol Biotechnol 2018; 102:5437-5444. [PMID: 29736824 DOI: 10.1007/s00253-018-8969-6] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 03/23/2018] [Accepted: 03/24/2018] [Indexed: 02/04/2023]
Abstract
Bacteria exhibit a number of metabolism-dependent and metabolism-independent processes for the uptake and accumulation of toxic metals. The removal of these metals from environmental sources such as soil, sludge, and wastewaters using microbe-based technologies provide an alternative for their recovery and remediation. Lead (Pb) is a pervasive metal in the environment that adversely affects all living organisms. Many aspects of metal-microbe interactions remain unexploited in biotechnology and further development and application is necessary, particularly to the problem of Pb release into the environment. Thus, this review provides a synopsis of the most important bacterial phenotypes and biochemical attributes that are instrumental in lead bioremediation, along with what is known of their genetic background that can be exploited or improved through genetic engineering. This review also highlights the potential of Pb-resistant bacteria in bringing about detoxification of Pb-contaminated terrestrial and aquatic systems in a highly sustainable and environmental friendly manner, and the existing challenges that still lie in the path to in situ and large-scale bioremediation.
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17
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Grimm AR, Sauer DF, Polen T, Zhu L, Hayashi T, Okuda J, Schwaneberg U. A Whole Cell E. coli Display Platform for Artificial Metalloenzymes: Poly(phenylacetylene) Production with a Rhodium–Nitrobindin Metalloprotein. ACS Catal 2018. [DOI: 10.1021/acscatal.7b04369] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Alexander R. Grimm
- Institute
of Biotechnology, RWTH Aachen University, Worringer Weg 3, D-52074 Aachen, Germany
| | - Daniel F. Sauer
- Institute
of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| | - Tino Polen
- IBG-1:
Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich
GmbH, D-52425 Jülich, Germany
| | - Leilei Zhu
- Institute
of Biotechnology, RWTH Aachen University, Worringer Weg 3, D-52074 Aachen, Germany
| | - Takashi Hayashi
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1
Yamadaoka, Suita 565-0871, Japan
| | - Jun Okuda
- Institute
of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| | - Ulrich Schwaneberg
- Institute
of Biotechnology, RWTH Aachen University, Worringer Weg 3, D-52074 Aachen, Germany
- DWI—Leibniz-Institute for Interactive Materials, Forckenbeckstrasse 50, D-52074 Aachen, Germany
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18
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Park DM, Brewer A, Reed DW, Lammers LN, Jiao Y. Recovery of Rare Earth Elements from Low-Grade Feedstock Leachates Using Engineered Bacteria. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:13471-13480. [PMID: 28944666 DOI: 10.1021/acs.est.7b02414] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The use of biomass for adsorption of rare earth elements (REEs) has been the subject of many recent investigations. However, REE adsorption by bioengineered systems has been scarcely documented, and rarely tested with complex natural feedstocks. Herein, we engineered E. coli cells for enhanced cell surface-mediated extraction of REEs by functionalizing the OmpA protein with 16 copies of a lanthanide binding tag (LBT). Through biosorption experiments conducted with leachates from metal-mine tailings and rare earth deposits, we show that functionalization of the cell surface with LBT yielded several notable advantages over the nonengineered control. First, the efficiency of REE adsorption from all leachates was enhanced as indicated by a 2-10-fold increase in distribution coefficients for individual REEs. Second, the relative affinity of the cell surface for REEs was increased over all non-REEs except Cu. Third, LBT-display systematically enhanced the affinity of the cell surface for REEs as a function of decreasing atomic radius, providing a means to separate high value heavy REEs from more common light REEs. Together, our results demonstrate that REE biosorption of high efficiency and selectivity from low-grade feedstocks can be achieved by engineering the native bacterial surface.
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Affiliation(s)
- Dan M Park
- Physical and Life Science Directorate, Lawrence Livermore National Laboratory , Livermore, California 94550, United States
| | - Aaron Brewer
- Physical and Life Science Directorate, Lawrence Livermore National Laboratory , Livermore, California 94550, United States
- Univiersty of Washington , Earth and Space Sciences, Seattle, Washington 98195, United States
| | - David W Reed
- Department of Biological and Chemical Processing, Idaho National Laboratory , Idaho Falls, Idaho 83415, United States
| | - Laura N Lammers
- Department of Environmental Science, Policy, and Management, University of California , Berkeley, California 94720, United States
| | - Yongqin Jiao
- Physical and Life Science Directorate, Lawrence Livermore National Laboratory , Livermore, California 94550, United States
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19
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Jia J, Cheng GJ, Wu A, Luan S. Novel imprinted polyethyleneimine nano-fluorescent probes with controllable selectivity for recognizing and adsorbing metal ions. RSC Adv 2017. [DOI: 10.1039/c7ra04712f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Novel ion imprinted nano-fluorescent probes based on polyethyleneimine (PEI) were obtained via simple imprinting and grafting with fluorescein, and used for high recognition, detection and adsorption of Cu2+, Zn2+ and Cr3+ in aqueous solution.
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Affiliation(s)
- Jin Jia
- College of Environmental Science and Engineering
- Peking University
- Beijing 100871
- China
- Key Laboratory of Environment Simulation and Pollution Control
| | - Gui-Juan Cheng
- Key Laboratory of Computational Chemistry and Drug Design
- College of School of Chemical Biology and Biotechnology
- Peking University Shenzhen Graduate School
- Shenzhen 518055
- China
| | - Aihua Wu
- Key Laboratory of Environment Simulation and Pollution Control
- PKU-HKUST Shenzhen-Hongkong Institution
- Shenzhen 518057
- China
| | - Shengji Luan
- College of Environmental Science and Engineering
- Peking University
- Beijing 100871
- China
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20
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Park DM, Reed DW, Yung MC, Eslamimanesh A, Lencka MM, Anderko A, Fujita Y, Riman RE, Navrotsky A, Jiao Y. Bioadsorption of Rare Earth Elements through Cell Surface Display of Lanthanide Binding Tags. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:2735-42. [PMID: 26836847 PMCID: PMC5381720 DOI: 10.1021/acs.est.5b06129] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
With the increasing demand for rare earth elements (REEs) in many emerging clean energy technologies, there is an urgent need for the development of new approaches for efficient REE extraction and recovery. As a step toward this goal, we genetically engineered the aerobic bacterium Caulobacter crescentus for REE adsorption through high-density cell surface display of lanthanide binding tags (LBTs) on its S-layer. The LBT-displayed strains exhibited enhanced adsorption of REEs compared to cells lacking LBT, high specificity for REEs, and an adsorption preference for REEs with small atomic radii. Adsorbed Tb(3+) could be effectively recovered using citrate, consistent with thermodynamic speciation calculations that predicted strong complexation of Tb(3+) by citrate. No reduction in Tb(3+) adsorption capacity was observed following citrate elution, enabling consecutive adsorption/desorption cycles. The LBT-displayed strain was effective for extracting REEs from the acid leachate of core samples collected at a prospective rare earth mine. Our collective results demonstrate a rapid, efficient, and reversible process for REE adsorption with potential industrial application for REE enrichment and separation.
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Affiliation(s)
- Dan M. Park
- Physical and Life Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 92550, United States
| | - David W. Reed
- Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Mimi C. Yung
- Physical and Life Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 92550, United States
| | - Ali Eslamimanesh
- OLI Systems, Inc., 240 Cedar Knolls Road, Suite 301, Cedar Knolls, New Jersey 07927, United States
| | - Malgorzata M. Lencka
- OLI Systems, Inc., 240 Cedar Knolls Road, Suite 301, Cedar Knolls, New Jersey 07927, United States
| | - Andrzej Anderko
- OLI Systems, Inc., 240 Cedar Knolls Road, Suite 301, Cedar Knolls, New Jersey 07927, United States
| | - Yoshiko Fujita
- Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Richard E. Riman
- Department of Materials Science and Engineering, Rutgers, The State University of New Jersey, 607 Taylor Road, Piscataway, New Jersey 08855, United States
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, Davis, California 95616, United States
| | - Yongqin Jiao
- Physical and Life Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 92550, United States
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21
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Wei W, Sun Y, Zhu M, Liu X, Sun P, Wang F, Gui Q, Meng W, Cao Y, Zhao J. Structural Insights and the Surprisingly Low Mechanical Stability of the Au–S Bond in the Gold-Specific Protein GolB. J Am Chem Soc 2015; 137:15358-61. [DOI: 10.1021/jacs.5b09895] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | - Feng Wang
- Elias
James Corey Institute of Biomedical Research, Wuxi Biortus Biosciences Co., Ltd, Jiangyin, 214437, China
| | | | - Wuyi Meng
- Elias
James Corey Institute of Biomedical Research, Wuxi Biortus Biosciences Co., Ltd, Jiangyin, 214437, China
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22
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Abstract
CadR is a metal-binding protein first isolated from rhizobacteriumPseudomonas putida.
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Affiliation(s)
- Q. Liu
- Key Laboratory of Chemical Genomics
- School of Chemical Biology & Biotechnology
- Peking University
- Shenzhen Graduate School
- 518055 Shenzhen
| | - F. Yuan
- Key Laboratory of Chemical Genomics
- School of Chemical Biology & Biotechnology
- Peking University
- Shenzhen Graduate School
- 518055 Shenzhen
| | - Y. Liang
- Key Laboratory of Chemical Genomics
- School of Chemical Biology & Biotechnology
- Peking University
- Shenzhen Graduate School
- 518055 Shenzhen
| | - Z. Li
- Key Laboratory of Chemical Genomics
- School of Chemical Biology & Biotechnology
- Peking University
- Shenzhen Graduate School
- 518055 Shenzhen
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23
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Wei W, Liu X, Sun P, Wang X, Zhu H, Hong M, Mao ZW, Zhao J. Simple whole-cell biodetection and bioremediation of heavy metals based on an engineered lead-specific operon. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:3363-3371. [PMID: 24564581 DOI: 10.1021/es4046567] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A lead-specific binding protein, PbrR, and promoter pbr from the lead resistance operon, pbr, of Cupriavidus metallidurans CH34 was incorporated into E. coli in conjunction with an engineered downstream RFP (red fluorescence protein), which allowed for highly sensitive and selective whole-cell detection of lead ions. The subsequent display of PbrR on the E. coli cell surface permitted selective adsorption of lead ions from solution containing various heavy metal ions. The surface-engineered E. coli bacteria effectively protected Arabidopsis thaliana seed germination from the toxicity of lead ions at high concentrations. Engineering the E. coli bacteria harboring these lead-specific elements from the pbr operon may potentially be a valuable general strategy for biodetection and bioremediation of toxic heavy metal ions in the environment.
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Affiliation(s)
- Wei Wei
- Institute of Chemistry and BioMedical Science, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Science, Nanjing University , Nanjing, 210093, People's Republic of China
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24
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Tseng HW, Tsai YJ, Yen JH, Chen PH, Yeh YC. A fluorescence-based microbial sensor for the selective detection of gold. Chem Commun (Camb) 2014; 50:1735-7. [DOI: 10.1039/c3cc48028c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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