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Sun J, Cheng X, Pan S, Wang L, Dou W, Liu J, Shi X. Dichloroacetate attenuates the stemness of colorectal cancer cells via trigerring ferroptosis through sequestering iron in lysosomes. Environ Toxicol 2021; 36:520-529. [PMID: 33166055 DOI: 10.1002/tox.23057] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 10/22/2020] [Indexed: 06/11/2023]
Abstract
Colorectal cancer stem cell (CSC) has been regarded to be the root of colorectal cancer progression. However, there is still no effective therapeutic method targeting colorectal CSC in clinical application. Here, we investigated the effects of dichloroacetate (DCA) on colorectal cancer cell stemness. We showed that DCA could reduce colorectal cancer cell stemness in a dose-dependent manner, which is evident by the decreased expression of stemness markers, tumor cell sphere-formation and cell migration ability. In addition, it was found that DCA trigerred the ferroptosis of colorectal CSC, which is characterized as the upregulation of iron concentration, lipid peroxides, and glutathione level, and decreased cell viability. Mechanistic studies demonstrated that DCA could sequester iron in lysosome and thus trigger ferroptosis, which is necessary for DCA-mediated attenuation on colorectal cancer cell stemness. Taken together, this work suggests that DCA might be a colorectal CSC-killer.
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Affiliation(s)
- Jie Sun
- Department of Gastroenterology, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu, China
| | - Xiuqin Cheng
- Department of Gastroenterology, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu, China
| | - Shubo Pan
- Department of Gastroenterology, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu, China
| | - Liangjing Wang
- Department of Gastroenterology, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu, China
| | - Wenhuan Dou
- Department of Gastroenterology, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu, China
| | - Jie Liu
- Department of Gastroenterology, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu, China
| | - Xiaohua Shi
- Department of Gastroenterology, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu, China
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Ogunade I, Jiang Y, Pech Cervantes A. DI/LC-MS/MS-Based Metabolome Analysis of Plasma Reveals the Effects of Sequestering Agents on the Metabolic Status of Dairy Cows Challenged with Aflatoxin B 1. Toxins (Basel) 2019; 11:toxins11120693. [PMID: 31779109 PMCID: PMC6950757 DOI: 10.3390/toxins11120693] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 11/20/2019] [Accepted: 11/23/2019] [Indexed: 11/16/2022] Open
Abstract
The study applied a targeted metabolomics approach that uses a direct injection and tandem mass spectrometry (DI–MS/MS) coupled with a liquid chromatography–tandem mass spectrometry (LC–MS/MS)-based metabolomics of plasma to evaluate the effects of supplementing clay with or without Saccharomyces cerevisiae fermentation product (SCFP) on the metabolic status of dairy cows challenged with aflatoxin B1. Eight healthy, lactating, multiparous Holstein cows in early lactation (64 ± 11 DIM) were randomly assigned to one of four treatments in a balanced 4 × 4 duplicated Latin square design with four 33 d periods. Treatments were control, toxin (T; 1725 µg aflatoxin B1 (AFB1)/head/day), T with clay (CL; 200 g/head/day), and CL with SCFP (YEA; 35 g of SCFP/head/day). Cows in T, CL, and YEA were dosed with aflatoxin B1 (AFB1) from days 26 to 30. The sequestering agents were top-dressed from day 1 to 33. On day 30 of each period, 15 mL of blood was taken from the coccygeal vessels and plasma samples were obtained from blood by centrifugation and analyzed for metabolites using a kit that combines DI–MS/MS with LC–MS/MS-based metabolomics. The data were analyzed using the GLIMMIX procedure of SAS. The model included the effects of treatment, period, and random effects of cow and square. Significance was declared at p ≤ 0.05. Biomarker profiles for aflatoxin ingestion in dairy cows fed no sequestering agents were determined using receiver–operator characteristic (ROC) curves, as calculated by the ROCCET web server. A total of 127 metabolites such as amino acids, biogenic amines, acylcarnitines, glycerophospholipids, and organic acids were quantified. Compared with the control, T decreased (p < 0.05) plasma concentrations of alanine, leucine, and arginine and tended to decrease that of citrulline. Treatment with CL had no effects on any of the metabolites relative to the control but increased (p ≤ 0.05) concentrations of alanine, leucine, arginine, and that of citrulline (p = 0.07) relative to T. Treatment with YEA resulted in greater (p ≤ 0.05) concentrations of aspartic acid and lysine relative to the control and the highest (p ≤ 0.05) plasma concentrations of alanine, valine, proline, threonine, leucine, isoleucine, glutamic acid, phenylalanine, and arginine compared with other treatments. The results of ROC analysis between C and T groups revealed that the combination of arginine, alanine, methylhistidine, and citrulline had sufficient specificity and sensitivity (area under the curve = 0.986) to be excellent potential biomarkers of aflatoxin ingestion in dairy cows fed no sequestering agents. This study confirmed the protective effects of sequestering agents in dairy cows challenged with aflatoxin B1.
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Affiliation(s)
- Ibukun Ogunade
- College of Agriculture, Communities, and the Environment, Kentucky State University, Frankfort, KY 40601, USA
- Correspondence:
| | - Yun Jiang
- Department of Animal Sciences, University of Florida, Gainesville, FL 32611, USA;
| | - Andres Pech Cervantes
- Agricultural Research Station, Fort Valley State University, Fort Valley, GA 31030, USA;
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Aikore MOS, Ortega-Beltran A, Eruvbetine D, Atehnkeng J, Falade TDO, Cotty PJ, Bandyopadhyay R. Performance of Broilers Fed with Maize Colonized by Either Toxigenic or Atoxigenic Strains of Aspergillus flavus with and without an Aflatoxin-Sequestering Agent. Toxins (Basel) 2019; 11:E565. [PMID: 31561495 PMCID: PMC6832921 DOI: 10.3390/toxins11100565] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/16/2019] [Accepted: 09/20/2019] [Indexed: 11/17/2022] Open
Abstract
In warm agricultural areas across the globe, maize, groundnut, and other crops become frequently contaminated with aflatoxins produced primarily by the fungus Aspergillus flavus. Crop contamination with those highly toxic and carcinogenic compounds impacts both human and animal health, as well as the income of farmers and trade. In Nigeria, poultry productivity is hindered by high prevalence of aflatoxins in feeds. A practical solution to decrease crop aflatoxin content is to use aflatoxin biocontrol products based on non-toxin-producing strains of A. flavus. The biocontrol product Aflasafe® was registered in 2014 for use in maize and groundnut grown in Nigeria. Its use allows the production of aflatoxin-safe maize and groundnut. A portion of the maize treated with Aflasafe in Nigeria is being used to manufacture feeds used by the poultry industry, and productivity is improving. One of the conditions to register Aflasafe with the national regulator was to demonstrate both the safety of Aflasafe-treated maize to avian species and the impact of Aflasafe as a public good. Results presented here demonstrate that the use of maize colonized by an atoxigenic strain of Aflasafe resulted in superior (p < 0.05) broiler performance in all evaluated parameters in comparison to broilers fed with toxigenic maize. Use of an aflatoxin-sequestering agent (ASA) was not sufficient to counteract the harmful effects of aflatoxins. Both the safety and public good value of Aflasafe were demonstrated during our study. In Nigeria, the availability of aflatoxin-safe crops as a result of using Aflasafe allows poultry producers to improve their productivity, their income, and the health of consumers of poultry products.
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Affiliation(s)
- M O Samuel Aikore
- Pathology and Mycotoxin Unit, International Institute of Tropical Agriculture (IITA), Ibadan 200001, Nigeria.
- Department of Animal Nutrition, Federal University of Agriculture, Abeokuta, PMB 2240, Alabata Road, Ogun State 110124, Nigeria.
| | - Alejandro Ortega-Beltran
- Pathology and Mycotoxin Unit, International Institute of Tropical Agriculture (IITA), Ibadan 200001, Nigeria.
| | - Daisy Eruvbetine
- Department of Animal Nutrition, Federal University of Agriculture, Abeokuta, PMB 2240, Alabata Road, Ogun State 110124, Nigeria.
| | - Joseph Atehnkeng
- Pathology and Mycotoxin Unit, International Institute of Tropical Agriculture (IITA), Ibadan 200001, Nigeria.
| | - Titilayo D O Falade
- Pathology and Mycotoxin Unit, International Institute of Tropical Agriculture (IITA), Ibadan 200001, Nigeria.
| | | | - Ranajit Bandyopadhyay
- Pathology and Mycotoxin Unit, International Institute of Tropical Agriculture (IITA), Ibadan 200001, Nigeria.
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Zheng W, Boada R, He R, Xiao T, Ye F, Simonelli L, Valiente M, Zhao Y, Hassan M. Extracellular Albumin Covalently Sequesters Selenocompounds and Determines Cytotoxicity. Int J Mol Sci 2019; 20:ijms20194734. [PMID: 31554226 PMCID: PMC6801750 DOI: 10.3390/ijms20194734] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 09/18/2019] [Accepted: 09/20/2019] [Indexed: 01/30/2023] Open
Abstract
Selenocompounds (SeCs) are well-known nutrients and promising candidates for cancer therapy; however, treatment efficacy is very heterogeneous and the mechanism of action is not fully understood. Several SeCs have been reported to have albumin-binding ability, which is an important factor in determining the treatment efficacy of drugs. In the present investigation, we hypothesized that extracellular albumin might orchestrate SeCs efficacy. Four SeCs representing distinct categories were selected to investigate their cytotoxicity, cellular uptake, and species transformation. Concomitant treatment of albumin greatly decreased cytotoxicity and cellular uptake of SeCs. Using both X-ray absorption spectroscopy and hyphenated mass spectrometry, we confirmed the formation of macromolecular conjugates between SeCs and albumin. Although the conjugate was still internalized, possibly via albumin scavenger receptors expressed on the cell surface, the uptake was strongly inhibited by excess albumin. In summary, the present investigation established the importance of extracellular albumin binding in determining SeCs cytotoxicity. Due to the fact that albumin content is higher in humans and animals than in cell cultures, and varies among many patient categories, our results are believed to have high translational impact and clinical implications.
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Affiliation(s)
- Wenyi Zheng
- Department of Laboratory Medicine, Karolinska Institute, 141 86 Huddinge, Sweden.
| | - Roberto Boada
- Centre GTS, Department of Chemistry, Autonomous University of Barcelona, 08193 Barcelona, Spain.
| | - Rui He
- Department of Laboratory Medicine, Karolinska Institute, 141 86 Huddinge, Sweden.
| | - Tingting Xiao
- Centre GTS, Department of Chemistry, Autonomous University of Barcelona, 08193 Barcelona, Spain.
| | - Fei Ye
- Division of Functional Nanomaterials, Royal Institute of Technology, 100 40 Stockholm, Sweden.
| | - Laura Simonelli
- CELLS-ALBA Synchrotron Radiation Facility, Carrer de la Llum 2-26, 08290 Barcelona, Spain.
| | - Manuel Valiente
- Centre GTS, Department of Chemistry, Autonomous University of Barcelona, 08193 Barcelona, Spain.
| | - Ying Zhao
- Department of Laboratory Medicine, Karolinska Institute, 141 86 Huddinge, Sweden.
- ECM, Clinical Research Center, Karolinska University Hospital, 141 86 Huddinge, Sweden.
| | - Moustapha Hassan
- Department of Laboratory Medicine, Karolinska Institute, 141 86 Huddinge, Sweden.
- ECM, Clinical Research Center, Karolinska University Hospital, 141 86 Huddinge, Sweden.
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Ogunade I, Jiang Y, Adeyemi J, Oliveira A, Vyas D, Adesogan A. Biomarker of Aflatoxin Ingestion: ¹H NMR-Based Plasma Metabolomics of Dairy Cows Fed Aflatoxin B₁ with or without Sequestering Agents. Toxins (Basel) 2018; 10:toxins10120545. [PMID: 30567330 PMCID: PMC6316819 DOI: 10.3390/toxins10120545] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/07/2018] [Accepted: 12/11/2018] [Indexed: 12/27/2022] Open
Abstract
The study applied ¹H NMR-based plasma metabolomics to identify candidate biomarkers of aflatoxin B1 (AFB₁) ingestion in dairy cows fed no sequestering agents and evaluate the effect of supplementing clay and/or a Saccharomyces cerevisiae fermentation product (SCFP) on such biomarkers. Eight lactating cows were randomly assigned to 1 of 4 treatments in a balanced 4 × 4 Latin square design with 2 squares. Treatments were: control, toxin (T; 1725 µg AFB₁/head/day), T with clay (CL; 200 g/head/day), and CL with SCFP (CL + SCFP; 35 g of SCFP/head/day). Cows in T, CL, and CL + SCFP were dosed with AFB₁ from d 26 to 30. The sequestering agents were top-dressed from d 1 to 33. On d 30 of each period, 15 mL of blood was taken from the coccygeal vessels and plasma samples were prepared by centrifugation. Compared to the control, T decreased plasma concentrations of alanine, acetic acid, leucine, arginine and valine. In contrast, T increased plasma ethanol concentration 3.56-fold compared to control. Treatment with CL tended to reduce sarcosine concentration, whereas treatment with CL + SCFP increased concentrations of mannose and 12 amino acids. Based on size of the area under the curve (AUC) of receiver operating characteristic and fold change (FC) analyses, ethanol was the most significantly altered metabolite in T (AUC = 0.88; FC = 3.56); hence, it was chosen as the candidate biomarker of aflatoxin ingestion in dairy cows fed no sequestering agent.
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Affiliation(s)
- Ibukun Ogunade
- College of Agriculture, Communities, and the Environment, Kentucky State University, Frankfort, KY 40601, USA.
| | - Yun Jiang
- Department of Animal Sciences, University of Florida, Gainesville, FL 32611, USA.
| | - James Adeyemi
- College of Agriculture, Communities, and the Environment, Kentucky State University, Frankfort, KY 40601, USA.
| | - Andre Oliveira
- Institute of Agriculture and Environmental Sciences, Federal University of Mato Grosso, Sinop, MT 78557-267, Brazil.
| | - Diwakar Vyas
- Department of Animal Sciences, University of Florida, Gainesville, FL 32611, USA.
| | - Adegbola Adesogan
- Department of Animal Sciences, University of Florida, Gainesville, FL 32611, USA.
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Ganapati S, Grabitz SD, Murkli S, Scheffenbichler F, Rudolph MI, Zavalij PY, Eikermann M, Isaacs L. Molecular Containers Bind Drugs of Abuse in Vitro and Reverse the Hyperlocomotive Effect of Methamphetamine in Rats. Chembiochem 2017; 18:1583-1588. [PMID: 28586110 PMCID: PMC5570556 DOI: 10.1002/cbic.201700289] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Indexed: 01/20/2023]
Abstract
We measured the affinity of five molecular container compounds (calabadions 1 and 2, CB[7], sulfocalix[4]arene, and HP-β-CD) toward seven drugs of abuse in homogenous aqueous solution at physiological pH by various methods (1 H NMR, UV/Vis, isothermal titration calorimetry [ITC]) and found binding constants (Ka values) spanning from <102 to >108 m-1 . We also report X-ray crystal structures of CB[7]⋅methamphetamine and 1⋅methamphetamine. We found that 2, but not CB[7], was able to ameliorate the hyperlocomotive activity of rats treated with methamphetamine. The bioavailability of the calabadions and their convergent building block synthesis suggest potential for further structural optimization as reversal agents for intoxication with nonopioid drugs of abuse for which no treatments are currently available.
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Affiliation(s)
- Shweta Ganapati
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
| | - Stephanie D Grabitz
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Steven Murkli
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
| | - Flora Scheffenbichler
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Maíra I Rudolph
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Peter Y Zavalij
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
| | - Matthias Eikermann
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
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Hwang SW, Lee YM, Aldini G, Yeum KJ. Targeting Reactive Carbonyl Species with Natural Sequestering Agents. Molecules 2016; 21:280. [PMID: 26927058 PMCID: PMC6273166 DOI: 10.3390/molecules21030280] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Revised: 02/23/2016] [Accepted: 02/23/2016] [Indexed: 02/07/2023] Open
Abstract
Reactive carbonyl species generated by the oxidation of polyunsaturated fatty acids and sugars are highly reactive due to their electrophilic nature, and are able to easily react with the nucleophilic sites of proteins as well as DNA causing cellular dysfunction. Levels of reactive carbonyl species and their reaction products have been reported to be elevated in various chronic diseases, including metabolic disorders and neurodegenerative diseases. In an effort to identify sequestering agents for reactive carbonyl species, various analytical techniques such as spectrophotometry, high performance liquid chromatography, western blot, and mass spectrometry have been utilized. In particular, recent advances using a novel high resolution mass spectrometry approach allows screening of complex mixtures such as natural products for their sequestering ability of reactive carbonyl species. To overcome the limited bioavailability and bioefficacy of natural products, new techniques using nanoparticles and nanocarriers may offer a new attractive strategy for increased in vivo utilization and targeted delivery of bioactives.
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Affiliation(s)
- Sung Won Hwang
- Department of Nano Science & Mechatronics Engineering, College of Science and Technology, Konkuk University, Chungju-si 27478, Korea.
| | - Yoon-Mi Lee
- Division of Food Bioscience, College of Biomedical and Health Sciences, Konkuk University, Chungju-si 27478, Korea.
- Interdisciplinary Research Center for Health, Konkuk University, Chungju-si 27478, Korea.
| | - Giancarlo Aldini
- Department of Pharmaceutical Sciences Pietro Pratesi, Università degli Studi di Milano, via Mangiagalli 25, Milan 20133, Italy.
| | - Kyung-Jin Yeum
- Division of Food Bioscience, College of Biomedical and Health Sciences, Konkuk University, Chungju-si 27478, Korea.
- Interdisciplinary Research Center for Health, Konkuk University, Chungju-si 27478, Korea.
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Pepys-Vered ME, Pepys MB. Targeted treatment for amyloidosis. Isr Med Assoc J 2014; 16:277-280. [PMID: 24979830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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