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Yu J, Fan J, Song Y, Zhao Y, Lin Z, Jiang L, Li H. Near-infrared fluorescent probe with large Stokes shift for specific detection of lysine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123734. [PMID: 38064966 DOI: 10.1016/j.saa.2023.123734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/23/2023] [Accepted: 12/02/2023] [Indexed: 01/13/2024]
Abstract
A new near-infrared (NIR) fluorescent probe CL based on coumarin- dicyanoisophorone was synthesized. Addition of Lys to probe CL solution in DMF/H2O (9:1, v/v) medium resulted in noticeable enhancement in the intensity of the fluorescence emission at 702 nm, accompanying distinct color change from yellow to pink. While addition of other amino acids and biothiols (Gly, Hcy, GSH, Glu, Val, Tyr, Arg, Trp, Lys, His, Leu, Phe, Asp and Met) did not bring about substantial changes in both fluorescence emission and color. The detection limit was calculated to be 0.51 μM. Job's plot test revealed that probe CL and Lys formed a complex of 1:1 stoichiometry. Probe CL showed high stability and could be used to recognize Lys in a wide pH range of 4.0-10.0. The sensing mechanism was proposed and verified by 1H NMR spectral measurement. The dual-modal fluorescence turn-on and colorimetric NIR probe with an extremely large Stokes shift of 280 nm may be utilized for highly specific and practical sensing of Lys.
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Affiliation(s)
- Jirui Yu
- College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China
| | - Ji Fan
- College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China
| | - Yanxi Song
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Yong Zhao
- School of Chemistry and Material Engineering, Huainan Normal University, 232038, Huainan, Anhui Province, China
| | - Ziyun Lin
- College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China
| | - Lin Jiang
- College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China
| | - Hongqi Li
- College of Chemistry and Chemical Engineering, Donghua University, Shanghai 201620, China.
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2
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E. coli biosensor based on modular GFP and luxI/luxR cyclic amplification circuit for sensitive detection of lysine. Anal Bioanal Chem 2022; 414:8299-8307. [DOI: 10.1007/s00216-022-04364-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/23/2022] [Accepted: 09/27/2022] [Indexed: 11/01/2022]
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3
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Dhyani R, Jain S, Bhatt A, Kumar P, Navani NK. Genetic regulatory element based whole-cell biosensors for the detection of metabolic disorders. Biosens Bioelectron 2021; 199:113869. [PMID: 34915213 DOI: 10.1016/j.bios.2021.113869] [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: 10/20/2021] [Revised: 12/03/2021] [Accepted: 12/05/2021] [Indexed: 11/29/2022]
Abstract
Clinicians require simple, and cost-effective diagnostic tools for the quantitative determination of amino acids in physiological fluids for the detection of metabolic disorder diseases. Besides, amino acids also act as biological markers for different types of cancers and cardiovascular diseases. Herein, we applied an in-silico based approach to identify potential amino acid-responsive genetic regulatory elements for the detection of metabolic disorders in humans. Identified sequences were further transcriptionally fused with GFP, thus generating an optical readout in response to their cognate targets. Screening of genetic regulatory elements led us to discover two promoter elements (pmetE::GFP and ptrpL::GFP) that showed a significant change in the fluorescence response to homocysteine and tryptophan, respectively. The developed biosensors respond specifically and sensitively with a limit of detection of 3.8 μM and 3 μM for homocysteine and tryptophan, respectively. Furthermore, the clinical utility of this assay was demonstrated by employing it to identify homocystinuria and tryptophanuria diseases through the quantification of homocysteine and tryptophan in plasma and urine samples within 5 h. The precision and accuracy of the biosensors for disease diagnosis were well within an acceptable range. The general strategy used in this system can be expanded to screen different genetic regulatory elements present in other gram-negative and gram-positive bacteria for the detection of metabolic disorders.
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Affiliation(s)
- Rajat Dhyani
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Roorkee, Uttarakhand, 247667, India
| | - Shubham Jain
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Roorkee, Uttarakhand, 247667, India
| | - Ankita Bhatt
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Roorkee, Uttarakhand, 247667, India
| | - Piyush Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Roorkee, Uttarakhand, 247667, India
| | - Naveen Kumar Navani
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Roorkee, Uttarakhand, 247667, India.
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4
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Yang L, Xie Y, Chen Q, Zhang J, Li L, Sun H. Colorimetric and Fluorescent Dual-Signal Chemosensor for Lysine and Arginine and Its Application to Detect Amines in Solid-Phase Peptide Synthesis. ACS APPLIED BIO MATERIALS 2021; 4:6558-6564. [PMID: 35006897 DOI: 10.1021/acsabm.1c00715] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Lysine (Lys) and arginine (Arg), as two of the most alkaline amino acids among 20 common amino acids, are closely involved in many vital biological processes and biomaterial synthesis. Abnormal levels of Lys and Arg can lead to various diseases. Although a limited number of fluorescent probes for Lys and Arg have been reported, many of them are not sensitive enough due to the moderate fluorescence signal and on-off mode. In addition, none of them were applied for detecting amine groups in solid-phase peptide synthesis. In this study, we designed and synthesized optical fluorescent probe 1 based on the benzoxadiazole fluorophore, which could undergo an accelerated hydrolysis reaction under basic conditions. Probe 1 revealed excellent selectivity toward alkaline Lys and Arg over other common amino acids with both fluorometric and colorimetric readouts. After treatment with Lys and Arg, probe 1 could emit a turn-on fluorescent response at 580 nm with a distinct color change from pink to yellow. The limit of detection for Lys and Arg was calculated to be 1.1 and 1.39 μM, respectively. We also successfully applied probe 1 for the visualization of Arg in living cells. Moreover, to the best of our knowledge, probe 1 provided the first fluorescent platform to detect -NH2 groups in solid-phase synthesis of peptides with distinct fluorescent and colorimetric changes. We envision that the probe can provide an alternative method for the traditional Kaiser test.
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Affiliation(s)
- Liu Yang
- College of Chemistry & Chemical Engineering, Central South University, Changsha, Hunan 410083, China.,Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, China.,Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China
| | - Yusheng Xie
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan 250012, China
| | - Qingxin Chen
- Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, China.,Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China
| | - Jie Zhang
- Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, China.,Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China
| | - Lin Li
- Shanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University, Xi'an 710072, China
| | - Hongyan Sun
- Department of Chemistry and COSDAF (Centre of Super-Diamond and Advanced Films), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, China.,Key Laboratory of Biochip Technology, Biotech and Health Centre, Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China
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5
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Zhu X, Zhao J, Dai F, Xu W, Chen L, Xiao X, Tao Z, Zhang C. Selective recognition of tryptophan by a methylpillar[5]arene-based supramolecular fuorescent probe. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 250:119381. [PMID: 33422874 DOI: 10.1016/j.saa.2020.119381] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/14/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
Herein we present a simple fluorescence quenching method to selectively recognise and determine L-tryptophan (L-Trp) out of other 19 natural amino acids. Methylpillar[5]arene (MeP5), which is employed as a macrocyclic fluorescent probe, exhibits fluorescence activity in the solution of poor solvents because of aggregation-induced emission (AIE) effect. Fluorescence quenching of MeP5 in the solution of EtOH/CH2Cl2 (98/2, v/v) was observed upon the addition of L-Trp whereas other 19 natural amino acids did not bring about obvious change in fluorescence intensity. 1H NMR titration, fluorescence spectroscopy, mass spectrometry and theoretical analysis revealed that L-Trp can be encapsulated into the cavity of MeP5 to form a stable 1:1 host-guest inclusion complex which accounts for the quenching characteristics. The proposed procedure in this investigation offers an attractive and promising method for the selective detection of L-Trp in a mixture of natural amino acids.
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Affiliation(s)
- Xinyi Zhu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Jie Zhao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Feifei Dai
- Taizhou Institute of Product Quality and Safety Inspection, Taizhou 318000, China
| | - Weitao Xu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Lixia Chen
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Xin Xiao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China.
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Chao Zhang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China.
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6
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Xu W, Feng H, Zhao W, Huang C, Redshaw C, Tao Z, Xiao X. Amino acid recognition by a fluorescent chemosensor based on cucurbit[8]uril and acridine hydrochloride. Anal Chim Acta 2020; 1135:142-149. [PMID: 33070851 DOI: 10.1016/j.aca.2020.09.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 08/26/2020] [Accepted: 09/13/2020] [Indexed: 01/16/2023]
Abstract
A new fluorescent chemosensor comprised of cucurbit[8]uril (Q[8]) and acridine hydrochloride (AC) has been designed and utilized for the recognition of amino acids. The AC was encapsulated by the Q[8] cavity and formed a 1:2 host-guest inclusion complex both in solution (aqueous) and in the solid-state. Whilst free AC is known to be strongly fluorescent, this strong fluorescence was quenched in the inclusion complex Q [8]-AC. This non-fluorescent complex Q[8]-AC was capable of serving as a fluorescence "off-on" probe, and was able to recognize either L-Phe or L-Trp via the competitive interaction between L-Phe or L-Trp. Moreover, the pH responsive nature of the probe allowed for the detection of basic amino acids, namely L-Arg, L-His, or L-Lys). As a result, a fluorescence method for the detection of five amino acids using a single system has been developed.
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Affiliation(s)
- Weitao Xu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Huaming Feng
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Weiwei Zhao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Chunhua Huang
- National Research Center for Geoanalysis, China Geological Survey, Beijing, 100037, China
| | - Carl Redshaw
- Department of Chemistry and Biochemistry, University of Hull, Hull, HU6 7RX, UK
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Xin Xiao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China.
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7
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Shan PH, Kan JL, Deng XY, Redshaw C, Bian B, Fan Y, Tao Z, Xiao X. A fluorescent probe based on cucurbit[7]uril for the selective recognition of phenylalanine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 233:118177. [PMID: 32151986 DOI: 10.1016/j.saa.2020.118177] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 02/16/2020] [Accepted: 02/17/2020] [Indexed: 06/10/2023]
Abstract
Herein we describe a simple fluorescence quenching method for the selective recognition and determination of the amino acid phenylalanine (Phe). The use of 1H NMR spectroscopy revealed that the alkaloid palmatine (PAL) can encapsulated partially into the cavity of cucurbit[7]uril (Q[7]) in aqueous solution to form a stable 1:1 host-guest inclusion complex. This host-guest complex exhibits fluorescence of moderate intensity. Interestingly, the addition of the Phe results in a dramatic quenching of the fluorescence intensity associated with the inclusion complex. By contrast, the addition of other natural amino acids resulted in no change in the fluorescence. Based on the linear relationship between the fluorescence intensity and the concentration of Phe, the detection of the concentration of Phe in aqueous solution is facile. Thus, a new fluorescence quenching method for the recognition and determination of the Phe has established herein.
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Affiliation(s)
- Pei-Hui Shan
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Jing-Lan Kan
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Xin-Yu Deng
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Carl Redshaw
- Department of Chemistry and Biochemistry, University of Hull, Hull HU6 7RX, UK
| | - Bing Bian
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, PR China
| | - Ying Fan
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Xin Xiao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China.
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8
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Bai Q, Zhang S, Chen H, Sun T, Redshaw C, Zhang J, Ni X, Wei G, Tao Z. Alkyl Substituted Cucurbit[6]uril Assisted Competitive Fluorescence Recognition of Lysine and Methionine in Aqueous Solution. ChemistrySelect 2017. [DOI: 10.1002/slct.201700053] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Qinghong Bai
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou ProvinceGuizhou University Guiyang 550025 China
| | - Shaowei Zhang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou ProvinceGuizhou University Guiyang 550025 China
| | - Hongrong Chen
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou ProvinceGuizhou University Guiyang 550025 China
| | - Tao Sun
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou ProvinceGuizhou University Guiyang 550025 China
| | - Carl Redshaw
- Department of ChemistryUniversity of Hull Hull HU6 7RX UK
| | - Jian‐Xin Zhang
- Key Laboratory of Chemistry for Natural Products of Guizhou Province Guiyang 550002 China
| | - Xin‐Long Ni
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou ProvinceGuizhou University Guiyang 550025 China
| | - Gang Wei
- CSIRO Manufacturing, P.O. Box 218 Lindfield, NSW 2070 Australia
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou ProvinceGuizhou University Guiyang 550025 China
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9
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Development of double-generation gold nanoparticle chip-based dengue virus detection system combining fluorescence turn-on probes. Biosens Bioelectron 2016; 77:90-8. [DOI: 10.1016/j.bios.2015.09.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Revised: 09/02/2015] [Accepted: 09/03/2015] [Indexed: 01/13/2023]
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10
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Ghosh A, Sengupta A, Chattopadhyay A, Das D. Lysine triggered ratiometric conversion of dynamic to static excimer of a pyrene derivative: aggregation-induced emission, nanomolar detection and human breast cancer cell (MCF7) imaging. Chem Commun (Camb) 2015; 51:11455-8. [DOI: 10.1039/c5cc02389k] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dynamic to static excimer formation followed by lysine concentration dependent spectral shift of a single crystal X-ray structurally characterized pyrene based probe allows highly selective ratiometric detection of lysine at the nanomolar level.
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Affiliation(s)
- Abhijit Ghosh
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
| | - Archya Sengupta
- Department of Zoology
- Visva Bharati University
- Santiniketan
- India
| | | | - Debasis Das
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
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11
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Chauhan N, Narang J, Sunny, Pundir C. Immobilization of lysine oxidase on a gold–platinum nanoparticles modified Au electrode for detection of lysine. Enzyme Microb Technol 2013; 52:265-71. [DOI: 10.1016/j.enzmictec.2013.01.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Revised: 01/13/2013] [Accepted: 01/15/2013] [Indexed: 11/30/2022]
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Bertels F, Merker H, Kost C. Design and characterization of auxotrophy-based amino acid biosensors. PLoS One 2012; 7:e41349. [PMID: 22829942 PMCID: PMC3400592 DOI: 10.1371/journal.pone.0041349] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 06/20/2012] [Indexed: 01/20/2023] Open
Abstract
Efficient and inexpensive methods are required for the high-throughput quantification of amino acids in physiological fluids or microbial cell cultures. Here we develop an array of Escherichia coli biosensors to sensitively quantify eleven different amino acids. By using online databases, genes involved in amino acid biosynthesis were identified that - upon deletion - should render the corresponding mutant auxotrophic for one particular amino acid. This rational design strategy suggested genes involved in the biosynthesis of arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, threonine, tryptophan, and tyrosine as potential genetic targets. A detailed phenotypic characterization of the corresponding single-gene deletion mutants indeed confirmed that these strains could neither grow on a minimal medium lacking amino acids nor transform any other proteinogenic amino acid into the focal one. Site-specific integration of the egfp gene into the chromosome of each biosensor decreased the detection limit of the GFP-labeled cells by 30% relative to turbidometric measurements. Finally, using the biosensors to determine the amino acid concentration in the supernatants of two amino acid overproducing E. coli strains (i.e. ΔhisL and ΔtdcC) both turbidometrically and via GFP fluorescence emission and comparing the results to conventional HPLC measurements confirmed the utility of the developed biosensor system. Taken together, our study provides not only a genotypically and phenotypically well-characterized set of publicly available amino acid biosensors, but also demonstrates the feasibility of the rational design strategy used.
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Affiliation(s)
- Felix Bertels
- Research Group Experimental Ecology and Evolution, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Holger Merker
- Research Group Experimental Ecology and Evolution, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Christian Kost
- Research Group Experimental Ecology and Evolution, Max Planck Institute for Chemical Ecology, Jena, Germany
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13
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Xu X, Ying Y. Microbial Biosensors for Environmental Monitoring and Food Analysis. FOOD REVIEWS INTERNATIONAL 2011. [DOI: 10.1080/87559129.2011.563393] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Zhou Y, Won J, Lee JY, Yoon J. Studies leading to the development of a highly selective colorimetric and fluorescent chemosensor for lysine. Chem Commun (Camb) 2011; 47:1997-9. [DOI: 10.1039/c0cc04942e] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Su L, Jia W, Hou C, Lei Y. Microbial biosensors: A review. Biosens Bioelectron 2011; 26:1788-99. [DOI: 10.1016/j.bios.2010.09.005] [Citation(s) in RCA: 325] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2010] [Revised: 08/29/2010] [Accepted: 09/02/2010] [Indexed: 02/01/2023]
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16
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Chalova VI, Sirsat SA, O'Bryan CA, Crandall PG, Ricke SC. Escherichia coli, an Intestinal Microorganism, as a Biosensor for Quantification of Amino Acid Bioavailability. SENSORS 2009; 9:7038-57. [PMID: 22399985 PMCID: PMC3290505 DOI: 10.3390/s90907038] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/02/2009] [Revised: 08/19/2009] [Accepted: 08/26/2009] [Indexed: 01/06/2023]
Abstract
In animal diets optimal amino acid quantities and balance among amino acids is of great nutritional importance. Essential amino acid deficiencies have negative impacts on animal physiology, most often expressed in sub-optimal body weight gains. Over supplementation of diets with amino acids is costly and can increase the nitrogen emissions from animals. Although in vivo animal assays for quantification of amino acid bioavailability are well established, Escherichia coli-based bioassays are viable potential alternatives in terms of accuracy, cost, and time input. E. coli inhabits the gastrointestinal tract and although more abundant in colon, a relatively high titer of E. coli can also be isolated from the small intestine, where primary absorption of amino acids and peptides occur. After feed proteins are digested, liberated amino acids and small peptides are assimilated by both the small intestine and E. coli. The similar pattern of uptake is a necessary prerequisite to establish E. coli cells as accurate amino acid biosensors. In fact, amino acid transporters in both intestinal and E. coli cells are stereospecific, delivering only the respective biological l-forms. The presence of free amino- and carboxyl groups is critical for amino acid and dipeptide transport in both biological subjects. Di-, tri- and tetrapeptides can enter enterocytes; likewise only di-, tri- and tetrapeptides support E. coli growth. These similarities in addition to the well known bacterial genetics make E. coli an optimal bioassay microorganism for the assessment of nutritionally available amino acids in feeds.
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Affiliation(s)
- Vesela I Chalova
- Center for Food Safety-IFSE, and Departments of Food and Poultry Sciences, University of Arkansas, Fayetteville, AR 72704, USA; E-Mails: (V.C.); (S.S.)
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17
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Chalova VI, Woodward CL, Ricke SC. A cad-gfpmut3 plasmid construct in Escherichia coli for gene induction-based quantification of lysine in acid hydrolysates of feedstuffs. Lett Appl Microbiol 2007; 46:107-12. [PMID: 17971099 DOI: 10.1111/j.1472-765x.2007.02273.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS To generate an inducible plasmid-borne cad-gfpmut3 transcriptional fusion and develop a method for quantification of total lysine. METHODS AND RESULTS The cad-gfpmut3 transcriptional fusion was constructed by cloning the cad promoter (Pcad) upstream of a promotorless gfpmut3 located on a high-copy plasmid. The construct was electroporated into Escherichia coli ZK126 and the transformed strain was subsequently used to quantify lysine in feed ingredients. Lysine standard curves based on gene induction of the bacterial cells were used for estimating acid hydrolysate lysine concentrations in four feed ingredients. Except for sorghum, no substantial differences were observed when the data for lysine in soybean (2 x 49 +/- 0 x 37%), cottonseed (1 x 82 +/- 0 x 15%), and meat and bone meal (2 x 31 +/- 0 x 24%) generated by the newly developed construct were compared with previously published data. CONCLUSIONS Using the cad-gfpmut3 fusion, feed derived lysine induction was measured easily and accurately, and could be a useful tool for the estimation of lysine in acid hydrolysates of feed ingredients. SIGNIFICANCE AND IMPACT OF THE STUDY The described approach for lysine quantification in feed ingredients represents a cost- and time-efficient method offering rapid and accurate lysine quantification of multiple samples.
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Affiliation(s)
- V I Chalova
- Department of Poultry Science, Texas A&M University, College Station, TX, USA
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