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Lin Q, Zheng N, An Q, Xiu Z, Li X, Zhu H, Chen C, Li Y, Wang S. Phthalate monoesters accumulation in residential indoor dust and influence factors. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 948:174900. [PMID: 39047842 DOI: 10.1016/j.scitotenv.2024.174900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 07/14/2024] [Accepted: 07/18/2024] [Indexed: 07/27/2024]
Abstract
Phthalate monoesters (mPAEs) possess biological activity that matches or even exceeds that of their parent compounds, phthalate esters (PAEs), negatively impacting humans. Indoor dust is the main carrier of indoor pollutants. In this study, indoor dust samples were collected from 46 households in Changchun City, Jilin Province, in May 2019, and particulate and flocculent fibrous dust was used as the research target to analyze the concentration and compositional characteristics of mPAEs, primary metabolites of five significant PAEs. The influence of factors such as architectural features and living habits in residential areas on exposure to mPAEs was explored. Ten suspected enzyme genes along with two metabolic pathways with the ability to degrade PAEs were screened using PICRUSt2. The results showed that the total concentrations of the five mPAEs in the indoor dust samples were particulate dust (11.49-78.69 μg/g) and flocculent fibrous dust (21.61-72.63 μg/g), respectively. The molar concentration ratio (RC) of mPAEs to corresponding PAEs significantly differed among chemicals, with MMP/DMP and MEP/DEP sporting the highest RC values. Different bacterial types have shown distinct influences against mPAEs and PAEs. Enzyme function and metabolic pathway abundance had a significant effect on the concentration of some mPAEs, mPAEs are most likely derived from microbial degradation of PAEs.
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Affiliation(s)
- Qiuyan Lin
- College of New Energy and Environment, Jilin University, Changchun 130012, China
| | - Na Zheng
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130012, China; College of New Energy and Environment, Jilin University, Changchun 130012, China.
| | - Qirui An
- College of New Energy and Environment, Jilin University, Changchun 130012, China
| | - Zhifei Xiu
- College of New Energy and Environment, Jilin University, Changchun 130012, China
| | - Xiaoqian Li
- College of New Energy and Environment, Jilin University, Changchun 130012, China
| | - Huicheng Zhu
- College of New Energy and Environment, Jilin University, Changchun 130012, China
| | - Changcheng Chen
- College of New Energy and Environment, Jilin University, Changchun 130012, China
| | - Yunyang Li
- Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Sujing Wang
- College of New Energy and Environment, Jilin University, Changchun 130012, China
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2
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Wang N, Zhang N, Sun ML, Sun Y, Dong QY, Wang Y, Gu ZT, Ding HT, Qin QL, Jiang Y, Chen XL, Zhang YZ, Gao C, Li CY. Molecular insights into the catalytic mechanism of a phthalate ester hydrolase. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135191. [PMID: 39013318 DOI: 10.1016/j.jhazmat.2024.135191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 07/05/2024] [Accepted: 07/11/2024] [Indexed: 07/18/2024]
Abstract
Phthalate esters (PAEs) are emerging hazardous and toxic chemicals that are extensively used as plasticizers or additives. Diethyl phthalate (DEP) and dimethyl phthalate (DMP), two kinds of PAEs, have been listed as the priority pollutants by many countries. PAE hydrolases are the most effective enzymes in PAE degradation, among which family IV esterases are predominate. However, only a few PAE hydrolases have been characterized, and as far as we know, no crystal structure of any PAE hydrolases of the family IV esterases is available to date. HylD1 is a PAE hydrolase of the family IV esterases, which can degrade DMP and DEP. Here, the recombinant HylD1 was characterized. HylD1 maintained a dimer in solution, and functioned under a relatively wide pH range. The crystal structures of HylD1 and its complex with monoethyl phthalate were solved. Residues involved in substrate binding were identified. The catalytic mechanism of HylD1 mediated by the catalytic triad Ser140-Asp231-His261 was further proposed. The hylD1 gene is widely distributed in different environments, suggesting its important role in PAEs degradation. This study provides a better understanding of PAEs hydrolysis, and lays out favorable bases for the rational design of highly-efficient PAEs degradation enzymes for industrial applications in future.
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Affiliation(s)
- Ning Wang
- MOE Key Laboratory of Evolution and Marine Biodiversity, Frontiers Science Center for Deep Ocean Multispheres and Earth System & College of Marine Life Sciences, Ocean University of China, Qingdao, China; State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, China; Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao, China
| | - Nan Zhang
- School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Mei-Ling Sun
- MOE Key Laboratory of Evolution and Marine Biodiversity, Frontiers Science Center for Deep Ocean Multispheres and Earth System & College of Marine Life Sciences, Ocean University of China, Qingdao, China; Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao, China
| | - Yan Sun
- MOE Key Laboratory of Evolution and Marine Biodiversity, Frontiers Science Center for Deep Ocean Multispheres and Earth System & College of Marine Life Sciences, Ocean University of China, Qingdao, China; Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao, China
| | - Qing-Yu Dong
- MOE Key Laboratory of Evolution and Marine Biodiversity, Frontiers Science Center for Deep Ocean Multispheres and Earth System & College of Marine Life Sciences, Ocean University of China, Qingdao, China; Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao, China
| | - Yu Wang
- MOE Key Laboratory of Evolution and Marine Biodiversity, Frontiers Science Center for Deep Ocean Multispheres and Earth System & College of Marine Life Sciences, Ocean University of China, Qingdao, China; Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao, China
| | - Zeng-Tian Gu
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, China; Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao, China
| | - Hai-Tao Ding
- Antarctic Great Wall Ecology National Observation and Research Station, Polar Research Institute of China, Ministry of Natural Resources, Shanghai, China
| | - Qi-Long Qin
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, China; Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao, China
| | - Yong Jiang
- MOE Key Laboratory of Evolution and Marine Biodiversity, Frontiers Science Center for Deep Ocean Multispheres and Earth System & College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Xiu-Lan Chen
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, China; Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao, China
| | - Yu-Zhong Zhang
- MOE Key Laboratory of Evolution and Marine Biodiversity, Frontiers Science Center for Deep Ocean Multispheres and Earth System & College of Marine Life Sciences, Ocean University of China, Qingdao, China; State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, China; Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao, China
| | - Chao Gao
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, China; Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao, China.
| | - Chun-Yang Li
- MOE Key Laboratory of Evolution and Marine Biodiversity, Frontiers Science Center for Deep Ocean Multispheres and Earth System & College of Marine Life Sciences, Ocean University of China, Qingdao, China; Joint Research Center for Marine Microbial Science and Technology, Shandong University and Ocean University of China, Qingdao, China.
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3
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Liu G, An H, Tang L, Chi Z, Bi Y, Ye Z, Zhao H, Xiang L, Feng N, Mo C, Xu D. Activated DBP degradation and relevant signal transduction path via quorum sensing autoinducers in Streptomyces sp. SH5. JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133571. [PMID: 38266588 DOI: 10.1016/j.jhazmat.2024.133571] [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: 08/18/2023] [Revised: 12/07/2023] [Accepted: 01/17/2024] [Indexed: 01/26/2024]
Abstract
Microbe-mediated DBP (dibutyl phthalate) mineralization is acknowledged to be affected by diverse extracellular factors. However, little is known about the regulatory effects from quorum sensing (QS) signals. In this study, extracellularly applied QS signals A-like (hydroxymethyl dihydrofuran) was discovered to significantly enhance DBP degradation efficiency in Streptomyces sp. SH5. Monobutyl phthalate, protocatechuic acid and beta-ketoadipate were discovered as degradation intermediates by HPLC-TOF-MS/MS. Multi-omics analysis revealed the up-regulation of multiple hydrolases, transferases and decarboxylases that potentially contributed to A-like accelerated DBP degradation. Transcription of Orf2708, an orthologue of global transcriptional activator, was significantly induced by A-like. Orf2708 was demonstrated to interact specifically with the promoter of hydrolase orf2879 gene by EMSA, and the overexpression of orf2879 led to an enhanced DBP degradation in SH5. Taken together with the molecular docking studies showing the stability of ligand-receptor complex of A-like and its potential receptor Orf3712, a hierarchical regulatory cascade underlying the QS signal mediated DBP degradation was proposed as A-like/Orf3712 duplex formation, enhanced orf2708 expression and the downstream specific activation of hydrolase Orf2879. Our study presents the first evidence of GBLs-type promoted DBP degradation among bacteria, and the elucidated signal transduction path indicates a universal application potential of this activation strategy.
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Affiliation(s)
- Ganxing Liu
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou 510632, PR China
| | - Hao An
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou 510632, PR China
| | - Lei Tang
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou 510632, PR China
| | - Zhewei Chi
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou 510632, PR China
| | - Yunwen Bi
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou 510632, PR China
| | - Zeqi Ye
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou 510632, PR China
| | - Haiming Zhao
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou 510632, PR China
| | - Lei Xiang
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou 510632, PR China
| | - Naixian Feng
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou 510632, PR China.
| | - Cehui Mo
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou 510632, PR China.
| | - Delin Xu
- Department of Ecology, Institute of Hydrobiology, School of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Jinan University, Guangzhou 510632, PR China.
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Shi QQ, Xu F, Shen T, Zhang RR, Liu H, Chen MZ, Sun AL, Zhang ZM, Shi XZ. High-throughput analytical methodology of monoalkyl phthalate esters and the composite risk assessment with their parent phthalate esters in aquatic organisms and seawater. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133186. [PMID: 38086300 DOI: 10.1016/j.jhazmat.2023.133186] [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: 10/10/2023] [Revised: 11/23/2023] [Accepted: 12/04/2023] [Indexed: 02/08/2024]
Abstract
A sensitive, robust, and highly efficient analytical methodology involving solid phase extraction coupled to ultra-high performance liquid chromatography tandem mass spectrometry was successfully established to detect 13 monoalkyl phthalate esters (MPAEs) in aquatic organisms and seawater. After the organisms were preprocessed using enzymatic deconjugation with β-glucuronidase, extraction, purification, and qualitative and quantitative optimization procedures were performed. Under optimal conditions, the limits of detection varied from 0.07 to 0.88 μg/kg (wet weight) and 0.04-1.96 ng/L in organisms and seawater, respectively. Collectively, MPAEs achieved acceptable recovery values (91.0-102.7%) with relative standard deviations less than 10.4% and matrix effects ranging from 0.93 to 1.07 in the above matrix. Furthermore, MPAEs and phthalate esters were detected by the developed methodology and gas chromatography-triple quadrupole tandem mass spectrometer in practical samples, respectively. Mono-n-butyl phthalate and mono-iso-butyl phthalate were the most predominant congeners, accounting for 24.8-35.2% in aquatic organisms and seawater. Comprehensive health and ecological risks were higher after the MPAEs were incorporated than when phthalate esters were considered separately, and greater than their risk threshold. Therefore, the risks caused by substances and their metabolites in multiple media, with analogous structure-activity relationships, should be considered to ensure the safety of aquatic organisms and consumers.
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Affiliation(s)
- Qiang-Qiang Shi
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Feng Xu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Tao Shen
- Ningbo Ecological and Environment Protection Society, Ningbo 315012, PR China
| | - Rong-Rong Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Hua Liu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China; School of Marine Sciences, Ningbo University, Ningbo 31211, PR China
| | - Ming-Ze Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Ai-Li Sun
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Ze-Ming Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China; School of Marine Sciences, Ningbo University, Ningbo 31211, PR China.
| | - Xi-Zhi Shi
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, School of Marine Sciences, Ningbo University, Ningbo 315211, PR China; School of Marine Sciences, Ningbo University, Ningbo 31211, PR China.
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5
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Cheng H, Zhou Y, Beiyuan J, Li X, Min J, Su L, Zhang L, Ji R, Xue J. Insights into the effect of hydrochar-derived dissolved organic matter on the sorption of diethyl phthalate onto soil: A pilot mechanism study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169101. [PMID: 38072267 DOI: 10.1016/j.scitotenv.2023.169101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 10/26/2023] [Accepted: 12/02/2023] [Indexed: 01/18/2024]
Abstract
Biowaste-derived hydrochar is an emerging close-to-natural product and has shown promise for soil improvement and remediation, but the environmental behavior of the dissolved organic matter released from hydrochar (HDOM) is poorly understood. Focusing on the typical mulch film plasticizer diethyl phthalate (DEP), we investigated the effect of HDOM on the sorption behavior of DEP on soil. The relatively low concentration of HDOM (10 mg L-1, 25 mg L-1) decreases the sorption quantity of DEP on soil, while it increases by a relatively high concentration, 50 mg L-1. The transformation from multilayer to monolayer sorption of DEP on soil occurs as the concentration of HDOM increases. The tryptophan-like substance is the main component of HDOM sorbed to soil, reaching 49.82 %, and results in competition sorption with DEP. The soil pores are blocked by HDOM, which limits the pore filling and mass transfer of DEP, but partitioning is significantly enhanced. The surface functional groups in HDOM are similar to those in soil, and chemical sorption, mainly composed of hydrogen bonding, exists but is not significantly strengthened. We identified the specific impact of HDOM on the sorption of organic pollutants on soil and provide new insights into the understanding of the environmental behavior of hydrochar.
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Affiliation(s)
- Hu Cheng
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment of the People's Republic of China, Nanjing 210042, PR China; Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, PR China
| | - Yue Zhou
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment of the People's Republic of China, Nanjing 210042, PR China
| | - Jingzi Beiyuan
- School of Environmental and Chemical Engineering, Foshan University, Foshan 528000, PR China
| | - Xiaona Li
- Research Center of Low-carbon Technology and Sustainable Development, School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Ju Min
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Lianghu Su
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment of the People's Republic of China, Nanjing 210042, PR China
| | - Longjiang Zhang
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment of the People's Republic of China, Nanjing 210042, PR China
| | - Rongting Ji
- Nanjing Institute of Environmental Science, Ministry of Ecology and Environment of the People's Republic of China, Nanjing 210042, PR China.
| | - Jianming Xue
- Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, PR China; New Zealand Forest Research Institute (Scion), Christchurch 8440, New Zealand
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6
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Zheng Y, Liu C, Chen J, Tang J, Luo J, Zou D, Tang Z, He J, Bai J. Integrated transcriptomic and biochemical characterization of the mechanisms governing stress responses in soil-dwelling invertebrate (Folsomia candida) upon exposure to dibutyl phthalate. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132644. [PMID: 37820532 DOI: 10.1016/j.jhazmat.2023.132644] [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: 07/13/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 10/13/2023]
Abstract
Dibutyl phthalate (DBP) is one of the most commonly utilized plasticizers and a frequently detected phthalic acid ester (PAE) compound in soil samples. However, the toxicological effects of DBP on soil-dwelling organisms remain poorly understood. This study employed a multi-biomarker approach to investigate the impact of DBP exposure on Folsomia candida's survival, reproduction, enzyme activity levels, and transcriptional profiles. Analyses of antioxidant biomarkers, including catalase (CAT) and glutathione S-transferase (GST), as well as detoxifying enzymes such as acetylcholinesterase (AChE), Cytochrome P450 (CYP450), and lipid peroxidation (LPO), revealed significant increases in CAT activity, GST levels, and CYP450 expression following treatment with various doses of DBP for 2, 4, 7, or 14 days. Additionally, LPO induction was observed along with significant AChE inhibition. In total, 3175 differentially expressed genes (DEGs) were identified following DBP treatment that were enriched in six Gene Ontology (GO) terms and 144 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, including 85 upregulated and 59 downregulated primarily associated with lipid metabolism, signal transduction, DNA repair, and cell growth and death. Overall these results provide foundational insights for further research into the molecular mechanisms underlying responses of soil invertebrates to DBP exposure.
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Affiliation(s)
- Yu Zheng
- Hunan University of Humanities, Science and Technology, Loudi, Hunan 417000, China; Hunan Provincial Collaborative Innovation Center for Field Weeds Control, Hunan University of Humanities, Science and Technology, Loudi, Hunan 417000, China.
| | - Can Liu
- Hunan University of Humanities, Science and Technology, Loudi, Hunan 417000, China
| | - Jiayi Chen
- Hunan University of Humanities, Science and Technology, Loudi, Hunan 417000, China
| | - Jianquan Tang
- Hunan University of Humanities, Science and Technology, Loudi, Hunan 417000, China
| | - Jiali Luo
- Hunan University of Humanities, Science and Technology, Loudi, Hunan 417000, China
| | - Di Zou
- Hunan University of Humanities, Science and Technology, Loudi, Hunan 417000, China
| | - Zhen Tang
- Hunan University of Humanities, Science and Technology, Loudi, Hunan 417000, China
| | - Jiali He
- Hunan University of Humanities, Science and Technology, Loudi, Hunan 417000, China
| | - Jing Bai
- Hunan University of Humanities, Science and Technology, Loudi, Hunan 417000, China.
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7
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Gong JM, Yi XL, Liang JH, Liu ZZ, Du Z. Inhibitory effects of phthalate esters (PAEs) and phthalate monoesters towards human carboxylesterases (CESs). Toxicol Appl Pharmacol 2024; 482:116785. [PMID: 38070751 DOI: 10.1016/j.taap.2023.116785] [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: 09/28/2023] [Revised: 11/22/2023] [Accepted: 12/04/2023] [Indexed: 01/17/2024]
Abstract
Phthalate esters (PAEs), accompanied by phthalate monoesters as hydrolysis metabolites in humans, have been widely used as plasticizers and exhibited disruptive effects on the endocrine and metabolic systems. The present study aims to investigate the inhibition behavior of PAEs and phthalate monoesters on the activity of the important hydrolytic enzymes, carboxylesterases (CESs), to elucidate the toxicity mechanism from a new perspective. The results showed significant inhibition on CES1 and CES2 by most PAEs, but not by phthalate monoesters, above which the activity of CES1 was strongly inhibited by DCHP, DEHP, DiOP, DiPP, DNP, DPP and BBZP, with inhibition ratios exceeding 80%. Kinetic analyses and in vitro-in vivo extrapolation were conducted, revealing that PAEs have the potential to disrupt the metabolism of endogenous substances catalyzed by CES1 in vivo. Molecular docking results revealed that hydrogen bonds and hydrophobic contacts formed by ester bonds contributed to the interaction of PAEs towards CES1. These findings will be beneficial for understanding the adverse effect of PAEs and phthalate monoesters.
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Affiliation(s)
- Jia-Min Gong
- School of Public Health, North Sichuan Medical College, Nanchong 637000, China
| | - Xiao-Lei Yi
- Chongqing Qijiang District for Disease Control and Prevention, Chongqing 401420, China
| | - Jia-Hong Liang
- School of Public Health, North Sichuan Medical College, Nanchong 637000, China
| | - Zhen-Zhong Liu
- School of Public Health, North Sichuan Medical College, Nanchong 637000, China
| | - Zuo Du
- School of Public Health, North Sichuan Medical College, Nanchong 637000, China.
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8
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Luo S, Zhen Z, Teng T, Wu W, Yang G, Yang C, Li H, Huang F, Wei T, Lin Z, Zhang D. New mechanisms of biochar-assisted vermicomposting by recognizing different active di-(2-ethylhexyl) phthalate (DEHP) degraders across pedosphere, charosphere and intestinal sphere. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131990. [PMID: 37418964 DOI: 10.1016/j.jhazmat.2023.131990] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 06/24/2023] [Accepted: 07/02/2023] [Indexed: 07/09/2023]
Abstract
Biochar-assisted vermicomposting can significantly accelerate soil DEHP degradation, but little information is known about the underlying mechanisms as different microspheres exist in soil ecosystem. In this study, we identified the active DEHP degraders in biochar-assisted vermicomposting by DNA stable isotope probing (DNA-SIP) and surprisingly found their different compositions in pedosphere, charosphere and intestinal sphere. Thirteen bacterial lineages (Laceyella, Microvirga, Sphingomonas, Ensifer, Skermanella, Lysobacter, Archangium, Intrasporangiaceae, Pseudarthrobacter, Blastococcus, Streptomyces, Nocardioides and Gemmatimonadetes) were responsible for in situ DEHP degradation in pedosphere, whereas their abundance significantly changed in biochar or earthworm treatments. Instead, some other active DEHP degraders were identified in charosphere (Serratia marcescens and Micromonospora) and intestinal sphere (Clostridiaceae, Oceanobacillus, Acidobacteria, Serratia marcescens and Acinetobacter) with high abundance. In biochar-assisted vermicomposting, the majority of active DEHP degraders were found in charosphere, followed by intestinal sphere and pedosphere. Our findings for the first time unraveled the spatial distribution of active DEHP degraders in different microspheres in soil matrices, explained by DEHP dynamic adsorption on biochar and desorption in earthworm gut. Our work highlighted that charosphere and intestinal sphere exhibited more contribution to the accelerated DEHP biodegradation than pedosphere, providing novel insight into the mechanisms of biochar and earthworm in improving contaminant degradation.
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Affiliation(s)
- Shuwen Luo
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, PR China
| | - Zhen Zhen
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, PR China
| | - Tingting Teng
- College of New Energy and Environment, Jilin University, Changchun 130021, PR China; Key Laboratory of Groundwater Resources and Environment Ministry of Education, Jilin University, Changchun 130021, PR China
| | - Weilong Wu
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, PR China
| | - Guiqiong Yang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, PR China
| | - Changhong Yang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, PR China
| | - Huijun Li
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, PR China
| | - Fengcheng Huang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, PR China
| | - Ting Wei
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, PR China
| | - Zhong Lin
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, PR China; Shenzhen Research Institute of Guangdong Ocean University, Shenzhen 518108, PR China.
| | - Dayi Zhang
- College of New Energy and Environment, Jilin University, Changchun 130021, PR China; Key Laboratory of Groundwater Resources and Environment Ministry of Education, Jilin University, Changchun 130021, PR China.
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