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Malvandi AM, Shahba S, Mehrzad J, Lombardi G. Metabolic Disruption by Naturally Occurring Mycotoxins in Circulation: A Focus on Vascular and Bone Homeostasis Dysfunction. Front Nutr 2022; 9:915681. [PMID: 35811967 PMCID: PMC9263741 DOI: 10.3389/fnut.2022.915681] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/30/2022] [Indexed: 12/22/2022] Open
Abstract
Naturally occurring food/feed contaminants have become a significant global issue due to animal and human health implications. Despite risk assessments and legislation setpoints on the mycotoxins' levels, exposure to lower amounts occurs, and it might affect cell homeostasis. However, the inflammatory consequences of this possible everyday exposure to toxins on the vascular microenvironment and arterial dysfunction are unexplored in detail. Circulation is the most accessible path for food-borne toxins, and the consequent metabolic and immune shifts affect systemic health, both on vascular apparatus and bone homeostasis. Their oxidative nature makes mycotoxins a plausible underlying source of low-level toxicity in the bone marrow microenvironment and arterial dysfunction. Mycotoxins could also influence the function of cardiomyocytes with possible injury to the heart. Co-occurrence of mycotoxins can modulate the metabolic pathways favoring osteoblast dysfunction and bone health losses. This review provides a novel insight into understanding the complex events of coexposure to mixed (low levels) mycotoxicosis and subsequent metabolic/immune disruptions contributing to chronic alterations in circulation.
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Affiliation(s)
- Amir Mohammad Malvandi
- Laboratory of Experimental Biochemistry and Molecular Biology, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
- *Correspondence: Amir Mohammad Malvandi ; orcid.org/0000-0003-1243-2372
| | - Sara Shahba
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Jalil Mehrzad
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Giovanni Lombardi
- Laboratory of Experimental Biochemistry and Molecular Biology, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
- Department of Athletics, Strength and Conditioning, Poznań University of Physical Education, Poznań, Poland
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2
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Dev I, Pal S, Lugun O, Singh N, Ansari KM. Ochratoxin A treated rat derived urinary exosomes enhanced cell growth and extracellular matrix production in normal kidney cells through modulation of TGF-β1/smad2/3 signaling pathway. Life Sci 2022; 298:120506. [DOI: 10.1016/j.lfs.2022.120506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 03/21/2022] [Accepted: 03/24/2022] [Indexed: 11/30/2022]
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3
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Systematic Structure-Based Search for Ochratoxin-Degrading Enzymes in Proteomes from Filamentous Fungi. Biomolecules 2021; 11:biom11071040. [PMID: 34356666 PMCID: PMC8301969 DOI: 10.3390/biom11071040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/13/2021] [Accepted: 07/15/2021] [Indexed: 01/05/2023] Open
Abstract
(1) Background: ochratoxins are mycotoxins produced by filamentous fungi with important implications in the food manufacturing industry due to their toxicity. Decontamination by specific ochratoxin-degrading enzymes has become an interesting alternative for the treatment of contaminated food commodities. (2) Methods: using a structure-based approach based on homology modeling, blind molecular docking of substrates and characterization of low-frequency protein motions, we performed a proteome mining in filamentous fungi to characterize new enzymes with potential ochratoxinase activity. (3) Results: the proteome mining results demonstrated the ubiquitous presence of fungal binuclear zinc-dependent amido-hydrolases with a high degree of structural homology to the already characterized ochratoxinase from Aspergillus niger. Ochratoxinase-like enzymes from ochratoxin-producing fungi showed more favorable substrate-binding pockets to accommodate ochratoxins A and B. (4) Conclusions: filamentous fungi are an interesting and rich source of hydrolases potentially capable of degrading ochratoxins, and could be used for the detoxification of diverse food commodities.
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4
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Marcoccia R, Nesci S, Merlo B, Ballotta G, Algieri C, Pagliarani A, Iacono E. Biological characteristics and metabolic profile of canine mesenchymal stem cells isolated from adipose tissue and umbilical cord matrix. PLoS One 2021; 16:e0247567. [PMID: 33661930 PMCID: PMC7932077 DOI: 10.1371/journal.pone.0247567] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 02/09/2021] [Indexed: 12/14/2022] Open
Abstract
Despite the increasing demand of cellular therapies for dogs, little is known on the differences between adult and fetal adnexa canine mesenchymal stem cells (MSCs), and data on their metabolic features are lacking. The present study aimed at comparing the characteristics of canine adipose tissue (AT) and umbilical cord matrix (UC) MSCs. Moreover, for the first time in the dog, the cellular bioenergetics were investigated by evaluating the two main metabolic pathways (oxidative phosphorylation and glycolysis) of ATP production. Frozen-thawed samples were used for this study. No differences in mean cell proliferation were found (P>0.05). However, while AT-MSCs showed a progressive increase in doubling time over passages, UC-MSCs showed an initial post freezing-thawing latency. No differences in migration, spheroid formation ability, and differentiation potential were found (P>0.05). RT-PCR analysis confirmed the expression of CD90 and CD44, the lack of CD14 and weak expression of CD34, mostly by AT-MSCs. DLA-DRA1 and DLA-DQA1 were weakly expressed only at passage 0 by UC-MSCs, while they were expressed at different passages for AT-MSCs. There was no difference (P>0.05) in total ATP production between cell cultures, but the ratio between the “mitochondrial ATP Production Rate” and the “glycolytic ATP Production Rate” was higher (P<0.05) in AT- than in UC-MSCs. However, in both MSCs types the mitochondrial respiration was the main pathway of ATP production. Mitochondrial respiration and ATP turnover in UC-MSCs were higher (P<0.05) than in AT-MSCs, but both had a 100% coupling efficiency. These features and the possibility of increasing the oxygen consumption by a spare respiratory capacity of four (AT-MSCSs) and two (UC-MSCs) order of magnitude greater than basal respiration, can be taken as indicative of the cell propensity to differentiate. The findings may efficiently contribute to select the most appropriate MSCs, culture and experimental conditions for transplantation experiments in mesenchymal stem cell therapy for companion animals.
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Affiliation(s)
- Romina Marcoccia
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
- Health Science and Technologies Interdepartmental Center for Industrial Research (HST-ICIR), University of Bologna, Bologna, Italy
| | - Salvatore Nesci
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Barbara Merlo
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
- Health Science and Technologies Interdepartmental Center for Industrial Research (HST-ICIR), University of Bologna, Bologna, Italy
- * E-mail:
| | - Giulia Ballotta
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Cristina Algieri
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Alessandra Pagliarani
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Eleonora Iacono
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
- Health Science and Technologies Interdepartmental Center for Industrial Research (HST-ICIR), University of Bologna, Bologna, Italy
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5
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Janik E, Niemcewicz M, Ceremuga M, Stela M, Saluk-Bijak J, Siadkowski A, Bijak M. Molecular Aspects of Mycotoxins-A Serious Problem for Human Health. Int J Mol Sci 2020; 21:E8187. [PMID: 33142955 PMCID: PMC7662353 DOI: 10.3390/ijms21218187] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/28/2020] [Accepted: 10/30/2020] [Indexed: 01/09/2023] Open
Abstract
Mycotoxins are toxic fungal secondary metabolities formed by a variety of fungi (moulds) species. Hundreds of potentially toxic mycotoxins have been already identified and are considered a serious problem in agriculture, animal husbandry, and public health. A large number of food-related products and beverages are yearly contaminated by mycotoxins, resulting in economic welfare losses. Mycotoxin indoor environment contamination is a global problem especially in less technologically developed countries. There is an ongoing effort in prevention of mould growth in the field and decontamination of contaminated food and feed in order to protect human and animal health. It should be emphasized that the mycotoxins production by fungi (moulds) species is unavoidable and that they are more toxic than pesticides. Human and animals are exposed to mycotoxin via food, inhalation, or contact which can result in many building-related illnesses including kidney and neurological diseases and cancer. In this review, we described in detail the molecular aspects of main representatives of mycotoxins, which are serious problems for global health, such as aflatoxins, ochratoxin A, T-2 toxin, deoxynivalenol, patulin, and zearalenone.
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Affiliation(s)
- Edyta Janik
- Biohazard Prevention Centre, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Marcin Niemcewicz
- Biohazard Prevention Centre, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Michal Ceremuga
- Military Institute of Armament Technology, Prymasa Stefana Wyszyńskiego 7, 05-220 Zielonka, Poland
| | - Maksymilian Stela
- CBRN Reconnaissance and Decontamination Department, Military Institute of Chemistry and Radiometry, Antoniego Chrusciela "Montera" 105, 00-910 Warsaw, Poland
| | - Joanna Saluk-Bijak
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Adrian Siadkowski
- Department of Security and Crisis Menagement, Faculty of Applied Sciences, University of Dabrowa Gornicza, Zygmunta Cieplaka 1c, 41-300 Dabrowa Gornicza, Poland
| | - Michal Bijak
- Biohazard Prevention Centre, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
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6
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Toxin Degradation by Rumen Microorganisms: A Review. Toxins (Basel) 2020; 12:toxins12100664. [PMID: 33092236 PMCID: PMC7590051 DOI: 10.3390/toxins12100664] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/07/2020] [Accepted: 10/13/2020] [Indexed: 12/21/2022] Open
Abstract
Animal feeds may contain exogenous compounds that can induce toxicity when ruminants ingest them. These toxins are secondary metabolites originating from various sources including plants, bacteria, algae and fungi. Animal feed toxins are responsible for various animal poisonings which negatively impact the livestock industry. Poisoning is more frequently reported in newly exposed, naïve ruminants while ‘experienced’ ruminants are observed to better tolerate toxin-contaminated feed. Ruminants can possess detoxification ability through rumen microorganisms with the rumen microbiome able to adapt to utilise toxic secondary metabolites. The ability of rumen microorganisms to metabolise these toxins has been used as a basis for the development of preventative probiotics to confer resistance against the poisoning to naïve ruminants. In this review, detoxification of various toxins, which include plant toxins, cyanobacteria toxins and plant-associated fungal mycotoxins, by rumen microorganisms is discussed. The review will include clinical studies of the animal poisoning caused by these toxins, the toxin mechanism of action, toxin degradation by rumen microorganisms, reported and hypothesised detoxification mechanisms and identified toxin metabolites with their toxicity compared to their parent toxin. This review highlights the commercial potential of rumen inoculum derived probiotics as viable means of improving ruminant health and production.
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7
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Ramallo M, Carreras-Sánchez I, López-Fernández A, Vélez R, Aguirre M, Feldman S, Vives J. Advances in translational orthopaedic research with species-specific multipotent mesenchymal stromal cells derived from the umbilical cord. Histol Histopathol 2020; 36:19-30. [PMID: 32914860 DOI: 10.14670/hh-18-249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Compliance with current regulations for the development of innovative medicines require the testing of candidate therapies in relevant translational animal models prior to human use. This poses a great challenge when the drug is composed of cells, not only because of the living nature of the active ingredient but also due to its human origin, which can subsequently lead to a xenogeneic response in the animals. Although immunosuppression is a plausible solution, this is not suitable for large animals and may also influence the results of the study by altering mechanisms of action that are, in fact, poorly understood. For this reason, a number of procedures have been developed to isolate homologous species-specific cell types to address preclinical pharmacodynamics, pharmacokinetics and toxicology. In this work, we present and discuss advances in the methodologies for derivation of multipotent Mesenchymal Stromal Cells derived from the umbilical cord, in general, and Wharton's jelly, in particular, from medium to large animals of interest in orthopaedics research, as well as current and potential applications in studies addressing proof of concept and preclinical regulatory aspects.
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Affiliation(s)
- Melina Ramallo
- School of Medicine, LABOATEM, - Osteoarticular Biology, Tissue Engineering and Emerging Therapies Laboratory, Biological Chemistry Cat., School of Medicine, National Rosario University, Rosario, Argentina
| | | | - Alba López-Fernández
- Servei de Teràpia Cellular, Banc de Sang i Teixits, Barcelona, Spain.,Musculoskeletal Tissue Engineering Group, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Roberto Vélez
- Musculoskeletal Tissue Engineering Group, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.,Orthopedic Surgery Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain.
| | - Màrius Aguirre
- Musculoskeletal Tissue Engineering Group, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.,Orthopedic Surgery Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain.
| | - Sara Feldman
- School of Medicine, LABOATEM, - Osteoarticular Biology, Tissue Engineering and Emerging Therapies Laboratory, Biological Chemistry Cat., School of Medicine, National Rosario University, Argentina.,Researh Council of the Rosario National University, (CIUNR) and CONICET, Rosario, Argentina.
| | - Joaquim Vives
- Servei de Teràpia Cellular, Banc de Sang i Teixits, Barcelona, Spain.,Musculoskeletal Tissue Engineering Group, Vall d'Hebron Research Institute (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.,Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain.
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8
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Xiong K, Zhi HW, Liu JY, Wang XY, Zhao ZY, Pei PG, Deng L, Xiong SY. Detoxification of Ochratoxin A by a novel Aspergillus oryzae strain and optimization of its biodegradation. Rev Argent Microbiol 2020; 53:48-58. [PMID: 32693928 DOI: 10.1016/j.ram.2020.06.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 04/26/2020] [Accepted: 06/01/2020] [Indexed: 11/25/2022] Open
Abstract
The mycotoxin Ochratoxin A (OTA) causes serious health risks and is found in food products throughout the world. The most promising method to detoxify this compound is biodegradation. In this study, Aspergillus oryzae strain M30011 was isolated and characterized based on its considerable capacity to degrade OTA. The degradation product (compound I) of A. oryzae-treated OTA was isolated, and its toxicity response was also evaluated. Furthermore, the relationships between three key cultivation condition factors affecting the OTA degradation rate were examined using the response surface methodology (RSM). Compound I was identified as ochratoxin α (C11H9O5Cl), and the toxicity response experiments indicated that A. oryzae detoxified OTA to a great extent. A maximum degradation rate of 94% was observed after 72h. This study demonstrates the potential for using A. oryzae to detoxify OTA and suggests that it could be applied in the food industry to improve food safety and quality.
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Affiliation(s)
- Ke Xiong
- Beijing Innovation Centre of Food Nutrition and Human, Beijing Technology & Business University (BTBU), Beijing 100048, China; Beijing Laboratory for Food Quality and Safety, Beijing Technology & Business University (BTBU), Beijing 100048, China.
| | - Hui-Wei Zhi
- Beijing Innovation Centre of Food Nutrition and Human, Beijing Technology & Business University (BTBU), Beijing 100048, China; Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Jia-Yun Liu
- Beijing Innovation Centre of Food Nutrition and Human, Beijing Technology & Business University (BTBU), Beijing 100048, China; Beijing Laboratory for Food Quality and Safety, Beijing Technology & Business University (BTBU), Beijing 100048, China
| | - Xiao-Yi Wang
- Beijing Innovation Centre of Food Nutrition and Human, Beijing Technology & Business University (BTBU), Beijing 100048, China; Beijing Laboratory for Food Quality and Safety, Beijing Technology & Business University (BTBU), Beijing 100048, China
| | - Zhi-Yao Zhao
- Beijing Innovation Centre of Food Nutrition and Human, Beijing Technology & Business University (BTBU), Beijing 100048, China; Beijing Laboratory for Food Quality and Safety, Beijing Technology & Business University (BTBU), Beijing 100048, China
| | - Peng-Gang Pei
- Beijing Laboratory for Food Quality and Safety, Beijing Technology & Business University (BTBU), Beijing 100048, China; Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), Beijing 100048, China
| | - Lei Deng
- Beijing Laboratory for Food Quality and Safety, Beijing Technology & Business University (BTBU), Beijing 100048, China; Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Su-Yue Xiong
- Beijing Innovation Centre of Food Nutrition and Human, Beijing Technology & Business University (BTBU), Beijing 100048, China; Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), Beijing 100048, China
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9
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Schrenk D, Bodin L, Chipman JK, del Mazo J, Grasl‐Kraupp B, Hogstrand C, Hoogenboom L(R, Leblanc J, Nebbia CS, Nielsen E, Ntzani E, Petersen A, Sand S, Schwerdtle T, Vleminckx C, Wallace H, Alexander J, Dall'Asta C, Mally A, Metzler M, Binaglia M, Horváth Z, Steinkellner H, Bignami M. Risk assessment of ochratoxin A in food. EFSA J 2020; 18:e06113. [PMID: 37649524 PMCID: PMC10464718 DOI: 10.2903/j.efsa.2020.6113] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The European Commission asked EFSA to update their 2006 opinion on ochratoxin A (OTA) in food. OTA is produced by fungi of the genus Aspergillus and Penicillium and found as a contaminant in various foods. OTA causes kidney toxicity in different animal species and kidney tumours in rodents. OTA is genotoxic both in vitro and in vivo; however, the mechanisms of genotoxicity are unclear. Direct and indirect genotoxic and non-genotoxic modes of action might each contribute to tumour formation. Since recent studies have raised uncertainty regarding the mode of action for kidney carcinogenicity, it is inappropriate to establish a health-based guidance value (HBGV) and a margin of exposure (MOE) approach was applied. For the characterisation of non-neoplastic effects, a BMDL 10 of 4.73 μg/kg body weight (bw) per day was calculated from kidney lesions observed in pigs. For characterisation of neoplastic effects, a BMDL 10 of 14.5 μg/kg bw per day was calculated from kidney tumours seen in rats. The estimation of chronic dietary exposure resulted in mean and 95th percentile levels ranging from 0.6 to 17.8 and from 2.4 to 51.7 ng/kg bw per day, respectively. Median OTA exposures in breastfed infants ranged from 1.7 to 2.6 ng/kg bw per day, 95th percentile exposures from 5.6 to 8.5 ng/kg bw per day in average/high breast milk consuming infants, respectively. Comparison of exposures with the BMDL 10 based on the non-neoplastic endpoint resulted in MOEs of more than 200 in most consumer groups, indicating a low health concern with the exception of MOEs for high consumers in the younger age groups, indicating a possible health concern. When compared with the BMDL 10 based on the neoplastic endpoint, MOEs were lower than 10,000 for almost all exposure scenarios, including breastfed infants. This would indicate a possible health concern if genotoxicity is direct. Uncertainty in this assessment is high and risk may be overestimated.
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10
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Zhang C, Zhang W, Tang X, Zhang Q, Zhang W, Li P. Change of Amino Acid Residues in Idiotypic Nanobodies Enhanced the Sensitivity of Competitive Enzyme Immunoassay for Mycotoxin Ochratoxin A in Cereals. Toxins (Basel) 2020; 12:toxins12040273. [PMID: 32340239 PMCID: PMC7232238 DOI: 10.3390/toxins12040273] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/22/2020] [Accepted: 03/24/2020] [Indexed: 01/28/2023] Open
Abstract
Anti-idiotypic nanobodies, usually expressed by gene engineering protocol, has been shown as a nontoxic coating antigen for toxic compound immunoassays. We here focused on how to increase immunoassay sensitivity by changing the nanobody’s primary sequence. In the experiments, two anti-idiotype nanobodies against monoclonal antibody 1H2, which is specific to ochratoxin A, were obtained and named as nontoxic coating antigen 1 (NCA1) and nontoxic coating antigen 2 (NCA2). Three differences between the nanobodies were discovered. First, there are six amino acid residues (AAR) of changes in the complementarity determining region (CDR), which compose the antigen-binding site. One of them locates in CDR1 (I–L), two of them in CDR2 (G–D, E–K), and three of them in CDR3 (Y–H, Y–W). Second, the affinity constant of NCA1 was tested as 1.20 × 108 L mol−1, which is about 4 times lower than that of NCA2 (5.36 × 108 L mol−1). Third, the sensitivity (50% inhibition concentration) of NCA1 for OTA was shown as 0.052 ng mL−1, which was 3.5 times lower than that of nontoxic coating antigen 2 (0.015 ng mL−1). The results indicate that the AAR changes in CDR of the anti-idiotypic nanobodies, from nonpolar to polar, increasing the affinity constant may enhance the immunoassay sensitivity. In addition, by using the nontoxic coating antigen 2 to substitute the routine synthetic toxic antigen, we established an eco-friendly and green enzyme-linked immunosorbent assay (ELISA) method for rapid detection of ochratoxin A in cereals. The half-maximal inhibitory concentration (IC50) of optimized ELISA was 0.017 ng mL−1 with a limit of detection (LOD) of 0.003 ng mL−1. The optimized immunoassay showed that the average recoveries of spiked corn, rice, and wheat were between 80% and 114.8%, with the relative standard deviation (RSD) ranging from 3.1–12.3%. Therefore, we provided not only basic knowledge on how to improve the structure of anti-idiotype nanobody for increasing assay sensitivity, but also an available eco-friendly ELISA for ochratoxin A in cereals.
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Affiliation(s)
- Caixia Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (C.Z.); (W.Z.); (X.T.); (W.Z.); (P.L.)
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
- Laboratory of Risk Assessment for Oilseeds Products, Wuhan, Ministry of Agriculture, Wuhan 430062, China
| | - Weiqi Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (C.Z.); (W.Z.); (X.T.); (W.Z.); (P.L.)
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
- Laboratory of Risk Assessment for Oilseeds Products, Wuhan, Ministry of Agriculture, Wuhan 430062, China
| | - Xiaoqian Tang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (C.Z.); (W.Z.); (X.T.); (W.Z.); (P.L.)
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
- Laboratory of Risk Assessment for Oilseeds Products, Wuhan, Ministry of Agriculture, Wuhan 430062, China
- Key Laboratory of Detection for Mycotoxins, Ministry of Agriculture, Wuhan 430062, China
- Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture, Wuhan 430062, China
| | - Qi Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (C.Z.); (W.Z.); (X.T.); (W.Z.); (P.L.)
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
- Laboratory of Risk Assessment for Oilseeds Products, Wuhan, Ministry of Agriculture, Wuhan 430062, China
- Key Laboratory of Detection for Mycotoxins, Ministry of Agriculture, Wuhan 430062, China
- Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture, Wuhan 430062, China
- Correspondence: ; Tel.: +86-27-86812943
| | - Wen Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (C.Z.); (W.Z.); (X.T.); (W.Z.); (P.L.)
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
- Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture, Wuhan 430062, China
| | - Peiwu Li
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China; (C.Z.); (W.Z.); (X.T.); (W.Z.); (P.L.)
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
- Laboratory of Risk Assessment for Oilseeds Products, Wuhan, Ministry of Agriculture, Wuhan 430062, China
- Key Laboratory of Detection for Mycotoxins, Ministry of Agriculture, Wuhan 430062, China
- Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture, Wuhan 430062, China
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Karamalakova Y, Nikolova G, Adhikari M, Stoev S, Agarwal P, Gadjeva V, Zhelev Z. Oxidative-protective effects of Tinospora cordifolia extract on plasma and spleen cells after experimental ochratoxicosis. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s00580-018-2761-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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12
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Tao Y, Xie S, Xu F, Liu A, Wang Y, Chen D, Pan Y, Huang L, Peng D, Wang X, Yuan Z. Ochratoxin A: Toxicity, oxidative stress and metabolism. Food Chem Toxicol 2018; 112:320-331. [DOI: 10.1016/j.fct.2018.01.002] [Citation(s) in RCA: 168] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/28/2017] [Accepted: 01/02/2018] [Indexed: 02/06/2023]
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13
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Zhao L, Peng Y, Zhang X, Li J, Zheng X, Yang Q, Apaliya MT, Zhang H. Integration of transcriptome and proteome data reveals ochratoxin A biosynthesis regulated by pH in Penicillium citrinum. RSC Adv 2017. [DOI: 10.1039/c7ra06927h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Proteomics and transcriptomics of P. citrinum under pH 5 (highest OTA-production) and pH 3 (not produce OTA) were analyzed to reveal the possible mechanism of OTA biosynthesis in P. citrinum.
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Affiliation(s)
- Lina Zhao
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Yaping Peng
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Xiaoyun Zhang
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Jun Li
- School of the Environment and Safety Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Xiangfeng Zheng
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Qiya Yang
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Maurice Tibiru Apaliya
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Hongyin Zhang
- School of Food and Biological Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
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14
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Du S, Zhang P, Zhang R, Lu Q, Liu L, Bao X, Liu H. Reduced graphene oxide induces cytotoxicity and inhibits photosynthetic performance of the green alga Scenedesmus obliquus. CHEMOSPHERE 2016; 164:499-507. [PMID: 27619061 DOI: 10.1016/j.chemosphere.2016.08.138] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 08/28/2016] [Accepted: 08/30/2016] [Indexed: 06/06/2023]
Abstract
Increased use of graphene materials might ultimately lead to their release into the environment. However, only a few studies have investigated the impact of graphene-based materials on green plants. In this study, the impact of reduced graphene oxide (RGO) on the microalgae Scenedesmus obliquus was evaluated to determine its phytotoxicity. Treatment with RGO suppressed the growth of the microalgae. The 72-h IC50 values of RGO evaluated using the logistic and Gompertz models were 148 and 151 mg L-1, respectively. RGO significantly inhibited Chl a and Chl a/b levels in the algal cells. Chlorophyll a fluorescence analysis showed that RGO significantly down-regulated photosystem II activity. The mechanism of how RGO inhibited algal growth and photosynthetic performance was determined by analyzing the alterations in ultrastructural morphology. RGO adhered to the algal cell surface as a semitranslucent coating. Cell wall damage and membrane integrity loss occurred in the treated cells. Moreover, nuclear chromatin clumping and starch grain number increase were noted. These changes might be attributed to the increase in malondialdehyde and reactive oxygen species levels, which might have exceeded the scavenging ability of antioxidant enzymes (including peroxidase and superoxide dismutase). RGO impaired the extra- and intra-cellular morphology and increased oxidative stress and thus inhibited algal growth and photosynthesis.
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Affiliation(s)
- Shaoting Du
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, Zhejiang Province, China.
| | - Peng Zhang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, Zhejiang Province, China
| | - Ranran Zhang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, Zhejiang Province, China
| | - Qi Lu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, Zhejiang Province, China
| | - Lin Liu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, Zhejiang Province, China
| | - Xiaowei Bao
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, Zhejiang Province, China
| | - Huijun Liu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, Zhejiang Province, China.
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15
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Cytotoxicity, apoptosis, DNA damage and methylation in mammary and kidney epithelial cell lines exposed to ochratoxin A. Cell Biol Toxicol 2016; 32:249-58. [PMID: 27154019 DOI: 10.1007/s10565-016-9332-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 04/28/2016] [Indexed: 01/03/2023]
Abstract
This study aimed to investigate the in vitro damage induced by ochratoxin A (OTA) in BME-UV1 and MDCK epithelial cells. Both cells lines were treated with OTA (0 up to 10 μg/mL), and cell viability (MTT assay), membrane stability (lactate dehydrogenase (LDH) release assay) and apoptotic cell rate (Tunel assay) were investigated. Further, the effect of the incubation with OTA has been evaluated at DNA level by the determination of DNA integrity, by the quantification of DNA adduct formation (8-hydroxy-2'-deoxyguanosine (8-OHdG)) and by the assessment of the global DNA methylation status (5-methyl-cytosine (5-mC)). The obtained results showed that after 24 h of OTA treatment, BME-UV1 cell viability was reduced in a dose-dependent way. OTA significantly (P < 0.05) increased LDH release in BME-UV1 cells at all concentrations tested. OTA (1.25 μg/mL) induced 35 % LDH release in MDCK cells (P < 0.05). A significant (P < 0.05) change in percentages of apoptotic BME-UV1 (10 ± 0.86) and MDCK (25 ± 0.88) cells was calculated when the cells were co-incubated with OTA. The level of 8-OHdG adduct formation was significantly (P < 0.05) increased in BME-UV1 cells treated with 1.25 μg/mL of OTA. The results of the present study suggest that a different mechanism of action may occur in these cell lines. Graphical abstract Study results overview.
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