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Chen W, Han L, Yang R, Wang H, Yao S, Deng H, Liu S, Zhou Y, Shen XL. Central role of Sigma-1 receptor in ochratoxin A-induced ferroptosis. Arch Toxicol 2024; 98:3323-3336. [PMID: 38896176 DOI: 10.1007/s00204-024-03805-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Accepted: 06/12/2024] [Indexed: 06/21/2024]
Abstract
Ochratoxin A (OTA), a secondary fungal metabolite known for its nephrotoxic effects, is prevalent in various feeds and food items. Our recent study suggests that OTA-induced nephrotoxicity is linked to the Sigma-1 receptor (Sig-1R)-mediated mitochondrial pathway apoptosis in human proximal tubule epithelial-originated kidney-2 (HK-2) cells. However, the contribution of Sig-1R to OTA-induced nephrotoxicity involving other forms of regulated cell death, such as ferroptosis, remains unexplored. In this investigation, cell viability, malondialdehyde (MDA) levels, glutathione (GSH) levels, and protein expressions in HK-2 cells treated with OTA and/or Ferrostatin-1/blarcamesine hydrochloride/BD1063 dihydrochloride were assessed. The results indicate that a 24 h-treatment with 1 μM OTA significantly induces ferroptosis by inhibiting Sig-1R, subsequently promoting nuclear receptor coactivator 4 (NCOA4), long-chain fatty acid-CoA ligase 4 (ACSL4), arachidonate 5-lipoxygenase (ALOX5), autophagy protein 5 (ATG5), and ATG7, inhibiting ferritin heavy chain (FTH1), solute carrier family 7 member 11 (SLC7A11/xCT), glutathione peroxidase 4 (GPX4), peroxiredoxin 6 (PRDX6), and ferroptosis suppressor protein 1 (FSP1), reducing GSH levels, and increasing MDA levels (P < 0.05). In conclusion, OTA induces ferroptosis by inhibiting Sig-1R, subsequently promoting ferritinophagy, inhibiting GPX4/FSP1 antioxidant systems, reducing GSH levels, and ultimately increasing lipid peroxidation levels in vitro.
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Affiliation(s)
- Wenying Chen
- School of Public Health, Zunyi Medical University, No.1 Campus Road, Xinpu District, Zunyi, 563000, Guizhou, People's Republic of China
- Key Laboratory of Maternal & Child Health and Exposure Science of Guizhou Higher Education Institutes, Zunyi, 563000, Guizhou, People's Republic of China
| | - Lingyun Han
- School of Public Health, Zunyi Medical University, No.1 Campus Road, Xinpu District, Zunyi, 563000, Guizhou, People's Republic of China
| | - Ruiran Yang
- School of Public Health, Zunyi Medical University, No.1 Campus Road, Xinpu District, Zunyi, 563000, Guizhou, People's Republic of China
| | - Hongwei Wang
- School of Public Health, Zunyi Medical University, No.1 Campus Road, Xinpu District, Zunyi, 563000, Guizhou, People's Republic of China
| | - Song Yao
- School of Public Health, Zunyi Medical University, No.1 Campus Road, Xinpu District, Zunyi, 563000, Guizhou, People's Republic of China
| | - Huiqiong Deng
- School of Public Health, Zunyi Medical University, No.1 Campus Road, Xinpu District, Zunyi, 563000, Guizhou, People's Republic of China
- Fuling District Center for Disease Control and Prevention, Fuling, 408000, Chongqing, People's Republic of China
| | - Shuangchao Liu
- School of Public Health, Zunyi Medical University, No.1 Campus Road, Xinpu District, Zunyi, 563000, Guizhou, People's Republic of China
| | - Yao Zhou
- School of Public Health, Zunyi Medical University, No.1 Campus Road, Xinpu District, Zunyi, 563000, Guizhou, People's Republic of China
| | - Xiao Li Shen
- School of Public Health, Zunyi Medical University, No.1 Campus Road, Xinpu District, Zunyi, 563000, Guizhou, People's Republic of China.
- Key Laboratory of Maternal & Child Health and Exposure Science of Guizhou Higher Education Institutes, Zunyi, 563000, Guizhou, People's Republic of China.
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Frangiamone M, Lázaro Á, Cimbalo A, Font G, Manyes L. In vitro and in vivo assessment of AFB1 and OTA toxic effects and the beneficial role of bioactive compounds. A systematic review. Food Chem 2024; 447:138909. [PMID: 38489879 DOI: 10.1016/j.foodchem.2024.138909] [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: 10/24/2023] [Revised: 02/13/2024] [Accepted: 02/28/2024] [Indexed: 03/17/2024]
Abstract
The purpose of this review was to investigate the current knowledge about aflatoxin B1 (AFB1) and ochratoxin A (OTA) toxicity and the possible beneficial role of bioactive compounds by using in vitro and in vivo models. Although AFB1 and OTA were tested in a similar percentage, the majority of studies focused on nephrotoxicity, hepatotoxicity, immune toxicity and neurotoxicity in which oxidative stress, inflammation, structural damage and apoptosis were the main mechanisms of action reported. Conversely, several biological compounds were assayed in order to modulate mycotoxins damage mainly in the liver, brain, kidney and immune system. Among them, pumpkin, curcumin and fermented whey were the most employed. Although a clear progress has been made by using in vivo models, further research is needed to assess not only the toxicity of multiple mycotoxins contamination but also the effect of functional compounds mixture, thereby reproducing more realistic situations for human health risk assessment.
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Affiliation(s)
- Massimo Frangiamone
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, Universitat de València, Carrer Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
| | - Álvaro Lázaro
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, Universitat de València, Carrer Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
| | - Alessandra Cimbalo
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, Universitat de València, Carrer Vicent Andrés Estellés s/n, 46100 Burjassot, Spain.
| | - Guillermina Font
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, Universitat de València, Carrer Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
| | - Lara Manyes
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, Universitat de València, Carrer Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
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Wang G, Zhang S, Lan H, Zheng X. Ochratoxin A (OTA) causes intestinal aging damage through the NLRP3 signaling pathway mediated by calcium overload and oxidative stress. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:27864-27882. [PMID: 38526719 DOI: 10.1007/s11356-024-32696-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 02/25/2024] [Indexed: 03/27/2024]
Abstract
Ochratoxin A (OTA) is a widespread environmental toxin that poses a serious threat to human and animal health. OTA has been shown to cause cellular and tissue damage and is a global public health problem. However, the effects of OTA on gastrointestinal aging have not been reported. The aim of this study was to investigate the effects of OTA on intestinal aging in vitro and in vivo. In vitro experiments showed that OTA induced cellular inflammation through calcium overload and oxidative stress, significantly up-regulated the expression of P16, P21, and P53 proteins, markedly increased senescence-associated β-galactosidase activity (SA-β-gal) positive cells, and obviously decreased the expression of proliferating cell nuclear antigen (PCNA) proteins, which led to intestinal cell senescence. Meanwhile, we found that treatment with β-carotene ameliorated OTA-induced intestinal cell senescence. Consistent with the results of the in vitro experiments, in vivo studies showed that the intestinal aging of mice fed OTA was significantly higher than that of the control group. In conclusion, OTA may induce intestinal aging through calcium overload, oxidative stress and inflammation. This study lays a foundation for further research on the toxicological effects of OTA.
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Affiliation(s)
- Guoxia Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Shuai Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Hainan Lan
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Xin Zheng
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China.
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Hou Y, Liu X, Li Y, Hou J, Liu H, Wu Q, Liu J. Aptamers for nanobodies: A nontoxic alternative to toxic ochratoxin A in immunoassays. Biosens Bioelectron 2024; 248:115995. [PMID: 38176255 DOI: 10.1016/j.bios.2023.115995] [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: 11/07/2023] [Revised: 12/23/2023] [Accepted: 12/29/2023] [Indexed: 01/06/2024]
Abstract
To measure toxins using immunoassays, hazardous toxin standards need to be added for quantification. To solve this problem, we propose to use aptamers as competitors to replace toxin standards. In this work, aptamers specific for ochratoxin A (OTA) nanobodies were selected using a DNA library containing a 36 nucleotide random region. The obtained sequences were highly aligned and the best competitor was identified to be a sequence named apt2-OT based on an indirect competitive enzyme-linked immunosorbent assay (ELISA). The Kd of apt2-OT was measured to be 2.86 μM using local surface plasmon resonance spectroscopy. The optimal apt2-OT was identified to substitute the OTA standard with a concentration needed for 50% inhibition of binding (IC50) of 3.26 μM based on a nontoxic direct competitive ELISA. The equivalence relationship between the aptamer and OTA was established in a flour sample, and a recovery experiment was performed. The detection limit for this method was 0.23 ng/mL, with a linear range from 0.25 to 10.50 ng/mL. The recovery rate was 97.5%-115.5%. This study provides a low-cost, rapid and environmentally friendly alternative to the development of immunoassays for toxins.
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Affiliation(s)
- Yingyu Hou
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization, Hubei Normal University, Huangshi, Hubei province, 435002, China
| | - Xixia Liu
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization, Hubei Normal University, Huangshi, Hubei province, 435002, China.
| | - Yongshu Li
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization, Hubei Normal University, Huangshi, Hubei province, 435002, China
| | - Jianjun Hou
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization, Hubei Normal University, Huangshi, Hubei province, 435002, China
| | - Huan Liu
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization, Hubei Normal University, Huangshi, Hubei province, 435002, China
| | - Qin Wu
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization, Hubei Normal University, Huangshi, Hubei province, 435002, China
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.
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Hou Y, Xu Q, Li Y, Long N, Li P, Wang J, Zhou L, Sheng P, Kong W. Ultrasensitive electrochemical aptasensor with Nafion-stabilized f-MWCNTs as signal enhancers for OTA detection. Bioelectrochemistry 2023; 151:108399. [PMID: 36805204 DOI: 10.1016/j.bioelechem.2023.108399] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/25/2023] [Accepted: 02/12/2023] [Indexed: 02/17/2023]
Abstract
In this study, an ultrasensitive electrochemical (EC) aptasensor with Nafion-stabilized functionalized multi-walled carbon nanotubes (f-MWCNTs) as signal enhancers was established for ochratoxin A (OTA) determination. Herein, f-MWCNTs were prepared through functionalization with nitric acid. The incorporation of Nafion promoted a good dispersion of f-MWCNTs and prevented their leaching on the electrode, making a robust stability of the aptasensor. The Nafion-f-MWCNTs composites were used as the sensing substrates to largely enhance the electroactive surface area and the conductivity of the electrode, realizing a significant signal amplification. Carboxyl groups on the surface of f-MWCNTs readily exposed from Nafion membrane to couple with streptavidin, facilitating the immobilization of biotinylated aptamers to achieve selective recognition towards OTA. When OTA existed, aptamers preferentially combined with it, causing a noticeable decline in the current response. Under optimum conditions, a good linear relationship between the current changes and the logarithm of OTA concentration was observed from 0.005 ng/mL to 10 ng/mL, with a limit of detection low to 1 pg/mL for OTA. The specific, sensitive, and reproducible aptasensor succeeded in application in malt samples, confirming a great promise for more contaminants and providing a universal platform in complex matrices by simply replacing the corresponding aptamers.
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Affiliation(s)
- Yujiao Hou
- School of Traditional Chinese Medicine, Capital Medical University, Beijing 100069, China; College of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi 830011, China
| | - Qingbin Xu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Ying Li
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Nan Long
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Peng Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Jiabo Wang
- School of Traditional Chinese Medicine, Capital Medical University, Beijing 100069, China
| | - Lidong Zhou
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Ping Sheng
- College of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi 830011, China
| | - Weijun Kong
- School of Traditional Chinese Medicine, Capital Medical University, Beijing 100069, China.
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