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Li X, Ma Y, He M, Tan B, Wang G, Zhu G. A novel fluorescent aptasensor for sensitive and selective detection of environmental toxins fumonisin B1 based on enzyme-assisted dual recycling amplification and 2D δ-FeOOH-NH 2 nanosheets. Biosens Bioelectron 2024; 253:116183. [PMID: 38452570 DOI: 10.1016/j.bios.2024.116183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 02/23/2024] [Accepted: 02/29/2024] [Indexed: 03/09/2024]
Abstract
Fumonisin (FB) is a pervasive hazardous substance in the environment, presenting significant threats to human health and ecological systems. Thus, the selective and sensitive detection of fumonisin B1 (FB1) is crucial due to its high toxicity and wide distribution in corn, oats, and related products. In this work, we developed a novel and versatile fluorescent aptasensor by combining enzyme-assisted dual recycling amplification with 2D δ-FeOOH-NH2 nanosheets for the determination of FB1. The established CRISPR/Cas12a system was activated by using activator DNA (aDNA), which was released via a T7 exonuclease-assisted recycling reaction. Additionally, the activated Cas12a protein was utilized for non-specifically cleavage of the FAM-labeled single-stranded DNA (ssDNA-FAM) anchored on δ-FeOOH-NH2 nanosheets. The pre-quenched fluorescence signal was restored due to the desorption of the cleaved ssDNA-FAM. Due to the utilization of this T7 exonuclease-Cas12a-δ-FeOOH-NH2 aptasensor for signal amplification, the detection range of FB1 was expanded from 1 pg/mL to 100 ng/mL, with a limit of detection (LOD) as low as 0.45 pg/mL. This study not only provides novel insights into the development of fluorescence biosensors based on 2D nanomaterials combined with CRISPR/Cas12a, but also exhibits remarkable applicability in detecting other significant targets.
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Affiliation(s)
- Xiang Li
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, China.
| | - Yunxiao Ma
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Mengyuan He
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Bing Tan
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Gongke Wang
- School of Materials Science and Engineering, Henan Engineering Research Center of Design and Recycle for Advanced Electrochemical Energy Storage Materials, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Guifen Zhu
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, China
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Berkane W, El Aroussi B, Bouchard M, Marchand G, Haddad S. Determination of blood:air, urine:air and plasma:air partition coefficients of selected microbial volatile organic compounds. CHEMOSPHERE 2023; 343:140305. [PMID: 37769913 DOI: 10.1016/j.chemosphere.2023.140305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/15/2023] [Accepted: 09/25/2023] [Indexed: 10/02/2023]
Abstract
Partition coefficients (PCs) are essential parameters for understanding the toxicokinetics of chemicals in the human body since they are used in the description of different processes of absorption, distribution, and excretion in physiologically based pharmacokinetic (PBPK) models used in chemical exposure and risk assessment. The goal of this study was to determine urine:air, blood:air and plasma:air partition coefficients (PCs) of microbial volatile organic compounds (mVOCs) previously selected as having high potential as biomarkers of indoor mold exposure. To achieve this goal, the vial-equilibration technique was used, and quantification was performed using headspace gas chromatography tandem mass spectrometry (HS-GC-MS/MS) analysis. Matrix:air PCs of 19 different mVOCs have been successfully determined and their values ranged between 14 and 3586 for urine:air, 78 and 4721 for blood:air and 64 and 5604 for plasma:air PCs. Water:air PCs were also determined, and their values varied between 16 and 2210, showing a good correlation with urine:air PCs for 17 compounds of the selected mVOCs (R2 = 0.97, slope close to unity) indicating that water:air PCs below 103 may be a good surrogate for urine:air PCs. All studied mVOCs have high blood:air PCs (greater than 78) indicating strong pulmonary uptake. Due to their high blood:urine PCs, some mVOCs may be more easily measured in blood than in urine. This work is an important preliminary step toward the use of mVOCs as potential biomarkers of indoor mold exposure. The data obtained in this study will help to determine the most appropriate matrix to use in this biomonitoring approach and will eventually facilitate the development of PBPK models for these chemicals.
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Affiliation(s)
- Wissam Berkane
- Department of Environmental and Occupational Health (DSEST), School of Public Health, Université de Montréal, Montréal, Québec, Canada; Centre de recherche en santé publique (CReSP) de l'Université de Montréal, Montréal, Québec, Canada
| | - Badr El Aroussi
- Department of Environmental and Occupational Health (DSEST), School of Public Health, Université de Montréal, Montréal, Québec, Canada; Centre de recherche en santé publique (CReSP) de l'Université de Montréal, Montréal, Québec, Canada
| | - Michèle Bouchard
- Department of Environmental and Occupational Health (DSEST), School of Public Health, Université de Montréal, Montréal, Québec, Canada; Centre de recherche en santé publique (CReSP) de l'Université de Montréal, Montréal, Québec, Canada
| | - Geneviève Marchand
- Department of Environmental and Occupational Health (DSEST), School of Public Health, Université de Montréal, Montréal, Québec, Canada; Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST), Montréal, Québec, Canada
| | - Sami Haddad
- Department of Environmental and Occupational Health (DSEST), School of Public Health, Université de Montréal, Montréal, Québec, Canada; Centre de recherche en santé publique (CReSP) de l'Université de Montréal, Montréal, Québec, Canada.
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Nie E, He P, Peng W, Zhang H, Lü F. Microbial volatile organic compounds as novel indicators of anaerobic digestion instability: Potential and challenges. Biotechnol Adv 2023; 67:108204. [PMID: 37356597 DOI: 10.1016/j.biotechadv.2023.108204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 06/07/2023] [Accepted: 06/19/2023] [Indexed: 06/27/2023]
Abstract
The wide application of anaerobic digestion (AD) technology is limited by process fluctuations. Thus, process monitoring based on screening state parameters as early warning indicators (EWI) is a top priority for AD facilities. However, predicting anaerobic digester stability based on such indicators is difficult, and their threshold values are uncertain, case-specific, and sometimes produce conflicting results. Thus, new EWI should be proposed to integrate microbial and metabolic information. These microbial volatile organic compounds (mVOCs) including alkanes, alkenes, alkynes, aromatic compounds are produced by microorganisms (bacteria, archaea and fungi), which might serve as a promising diagnostic tool for environmental monitoring. Moreover, mVOCs diffuse in both gas and liquid phases and are considered the language of intra kingdom microbial interactions. Herein, we highlight the potential of mVOCs as EWI for AD process instability, including discussions regarding characteristics and sources of mVOCs as well as sampling and determination methods. Furthermore, existing challenges must be addressed, before mVOCs profiling can be used as an early warning system for diagnosing AD process instability, such as mVOCs sampling, analysis and identification. Finally, we discuss the potential biotechnology applications of mVOCs and approaches to overcome the challenges regarding their application.
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Affiliation(s)
- Erqi Nie
- Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, People's Republic of China
| | - Pinjing He
- Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, People's Republic of China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, People's Republic of China
| | - Wei Peng
- Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, People's Republic of China
| | - Hua Zhang
- Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, People's Republic of China
| | - Fan Lü
- Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, People's Republic of China.
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Peng M, Jiang Z, Zhou F, Wang Z. From salty to thriving: plant growth promoting bacteria as nature's allies in overcoming salinity stress in plants. Front Microbiol 2023; 14:1169809. [PMID: 37426022 PMCID: PMC10327291 DOI: 10.3389/fmicb.2023.1169809] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 06/09/2023] [Indexed: 07/11/2023] Open
Abstract
Soil salinity is one of the main problems that affects global crop yield. Researchers have attempted to alleviate the effects of salt stress on plant growth using a variety of approaches, including genetic modification of salt-tolerant plants, screening the higher salt-tolerant genotypes, and the inoculation of beneficial plant microbiome, such as plant growth-promoting bacteria (PGPB). PGPB mainly exists in the rhizosphere soil, plant tissues and on the surfaces of leaves or stems, and can promote plant growth and increase plant tolerance to abiotic stress. Many halophytes recruit salt-resistant microorganisms, and therefore endophytic bacteria isolated from halophytes can help enhance plant stress responses. Beneficial plant-microbe interactions are widespread in nature, and microbial communities provide an opportunity to understand these beneficial interactions. In this study, we provide a brief overview of the current state of plant microbiomes and give particular emphasis on its influence factors and discuss various mechanisms used by PGPB in alleviating salt stress for plants. Then, we also describe the relationship between bacterial Type VI secretion system and plant growth promotion.
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Affiliation(s)
- Mu Peng
- Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, China
- College of Biological and Food Engineering, Hubei Minzu University, Enshi, China
| | - Zhihui Jiang
- College of Biological and Food Engineering, Hubei Minzu University, Enshi, China
| | - Fangzhen Zhou
- Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, China
- College of Biological and Food Engineering, Hubei Minzu University, Enshi, China
| | - Zhiyong Wang
- Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi, China
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Zheng J, Kuang Y, Zhou S, Gong X, Ouyang G. Latest Improvements and Expanding Applications of Solid-Phase Microextraction. Anal Chem 2023; 95:218-237. [PMID: 36625125 DOI: 10.1021/acs.analchem.2c03246] [Citation(s) in RCA: 31] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Juan Zheng
- Ministry of Education (MOE) Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry/School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Yixin Kuang
- Ministry of Education (MOE) Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry/School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Suxin Zhou
- Ministry of Education (MOE) Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry/School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Xinying Gong
- Ministry of Education (MOE) Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry/School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Gangfeng Ouyang
- Ministry of Education (MOE) Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry/School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510006, China
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