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Huang Y, Zhang W, Zhang C, Cui N, Xiao Z, Wang R, Su X. Rapid and reagent-free bioassay using autobioluminescent yeasts to detect agonistic and antagonistic activities of bisphenols against rat androgen receptor and progesterone receptor. J Steroid Biochem Mol Biol 2022; 222:106151. [PMID: 35787454 DOI: 10.1016/j.jsbmb.2022.106151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 06/20/2022] [Accepted: 06/29/2022] [Indexed: 11/17/2022]
Abstract
Bisphenol A (BPA) and its analogues have been classified as endocrine disruptors via binding to nuclear receptors. Two novel bioassays, BLYrARS and BLYrPRS, were developed for rapid detection of agonistic and antagonistic activities of BPA and five of its analogues binding rat androgen receptor (rAR) and rat progesterone receptor (rPR). The reporter bioassay was based on two autonomously bioluminescent strains of the yeast Saccharomyces cerevisiae, recombined with a bacterial luciferase reporter gene cassette (lux) that can produce autofluorescence, regulated by the corresponding hormone response element acting as the responsive promoter. The bioluminescent signal is autonomous and continuous without cell lysis or addition of exogenous reagents. The AR agonist R1881 could be detected at 4 h with a half-maximal effective concentration (EC50) of ~9.4 nM. The PR agonist progesterone could be determined at 4 h with an EC50 of ~2.74 nM. None of the sixteen bisphenols presented agonistic activities against rAR and rPR. However, thirteen BPs were rAR antagonists and eleven BPs acted as rPR antagonists with different potency. The BLYrARS and BLYrPRS bioassay characterized by automated signal acquisition without additional manipulations or cost can be applied for simple and rapid detection of agonistic and antagonistic activities of BPs and other compounds acting as agonists or antagonists of rAR and rPR. Based on data derived by use of this bioassay endocrine-disrupting activities of some BPA analogues are more potent than BPA.
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Affiliation(s)
- Yuan Huang
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 10081, China.
| | - Wei Zhang
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 10081, China.
| | - Chengdong Zhang
- Beijing Biorise Biotechnology Co., Ltd, Beijing 102206, China.
| | - Na Cui
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 10081, China.
| | - Zhiming Xiao
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 10081, China.
| | - Ruiguo Wang
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 10081, China.
| | - Xiaoou Su
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 10081, China.
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2
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Hall JM, Korach KS. Endocrine disrupting chemicals (EDCs) and sex steroid receptors. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2021; 92:191-235. [PMID: 34452687 DOI: 10.1016/bs.apha.2021.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Sex-steroid receptors (SSRs) are essential mediators of estrogen, progestin, and androgen signaling that are critical in vast aspects of human development and multi-organ homeostasis. Dysregulation of SSR function has been implicated in numerous pathologies including cancers, obesity, Type II diabetes mellitus, neuroendocrine disorders, cardiovascular disease, hyperlipidemia, male and female infertility, and other reproductive disorders. Endocrine disrupting chemicals (EDCs) modulate SSR function in a wide variety of cell and tissues. There exists strong experimental, clinical, and epidemiological evidence that engagement of EDCs with SSRs may disrupt endogenous hormone signaling leading to physiological abnormalities that may manifest in disease. In this chapter, we discuss the molecular mechanisms by which EDCs interact with estrogen, progestin, and androgen receptors and alter SSR functions in target cells. In addition, the pathological consequences of disruption of SSR action in reproductive and other organs by EDCs is described with an emphasis on underlying mechanisms of receptors dysfunction.
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Affiliation(s)
- Julianne M Hall
- Quinnipiac University Frank H. Netter MD School of Medicine, Hamden, CT, United States.
| | - Kenneth S Korach
- National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC, United States
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3
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Brennan JC, Gale RW, Alvarez DA, Berninger JP, Leet JK, Li Y, Wagner T, Tillitt DE. Factors Affecting Sampling Strategies for Design of an Effects-Directed Analysis for Endocrine-Active Chemicals. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2020; 39:1309-1324. [PMID: 32362034 DOI: 10.1002/etc.4739] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 03/06/2020] [Accepted: 04/22/2020] [Indexed: 05/26/2023]
Abstract
Effects-directed analysis (EDA) is an important tool for identifying unknown bioactive components in a complex mixture. Such an analysis of endocrine-active chemicals (EACs) from water sources has promising regulatory implications but also unique logistical challenges. We propose a conceptual EDA (framework) based on a critical review of EDA literature and concentrations of common EACs in waste and surface waters. Required water volumes for identification of EACs under this EDA framework were estimated based on bioassay performance (in vitro and in vivo bioassays), limits of quantification by mass spectrometry (MS), and EAC water concentrations. Sample volumes for EDA across the EACs showed high variation in the bioassay detectors, with genistein, bisphenol A, and androstenedione requiring very high sample volumes and ethinylestradiol and 17β-trenbolone requiring low sample volumes. Sample volume based on the MS detector was far less variable across the EACs. The EDA framework equation was rearranged to calculate detector "thresholds," and these thresholds were compared with the literature EAC water concentrations to evaluate the feasibility of the EDA framework. In the majority of instances, feasibility of the EDA was limited by the bioassay, not MS detection. Mixed model analysis showed that the volumes required for a successful EDA were affected by the potentially responsible EAC, detection methods, and the water source type, with detection method having the greatest effect on the EDA of estrogens and androgens. The EDA framework, equation, and model we present provide a valuable tool for designing a successful EDA. Environ Toxicol Chem 2020;39:1309-1324. © 2020 SETAC.
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Affiliation(s)
- Jennifer C Brennan
- US Geological Survey, Columbia Environmental Research Center, Columbia, Missouri
| | - Robert W Gale
- US Geological Survey, Columbia Environmental Research Center, Columbia, Missouri
| | - David A Alvarez
- US Geological Survey, Columbia Environmental Research Center, Columbia, Missouri
| | - Jason P Berninger
- US Geological Survey, Columbia Environmental Research Center, Columbia, Missouri
| | - Jessica K Leet
- US Geological Survey, Columbia Environmental Research Center, Columbia, Missouri
| | - Yan Li
- North Carolina Division of Marine Fisheries, North Carolina Department of Environmental Quality, Morehead City, North Carolina, USA
| | - Tyler Wagner
- Pennsylvania Cooperative Fish and Wildlife Research Unit, US Geological Survey, Pennsylvania State University, University Park, Pennsylvania
| | - Donald E Tillitt
- US Geological Survey, Columbia Environmental Research Center, Columbia, Missouri
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Xin J, Wan Mahtar WNA, Siah PC, Miswan N, Khoo BY. Potential use of Pichia pastoris strain SMD1168H expressing DNA topoisomerase I in the screening of potential anti‑breast cancer agents. Mol Med Rep 2019; 19:5368-5376. [PMID: 31059050 PMCID: PMC6522884 DOI: 10.3892/mmr.2019.10201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Accepted: 02/28/2019] [Indexed: 11/05/2022] Open
Abstract
Cancer chemotherapy possesses high toxicity, particularly when a higher concentration of drugs is administered to patients. Therefore, searching for more effective compounds to reduce the toxicity of treatments, while still producing similar effects as current chemotherapy regimens, is required. Currently, the search for potential anticancer agents involves a random, inaccurate process with strategic deficits and a lack of specific targets. For this reason, the initial in vitro high‑throughput steps in the screening process should be reviewed for rapid identification of the compounds that may serve as anticancer agents. The present study aimed to investigate the potential use of the Pichia pastoris strain SMD1168H expressing DNA topoisomerase I (SMD1168H‑TOPOI) in a yeast‑based assay for screening potential anticancer agents. The cell density that indicated the growth of the recombinant yeast without treatment was first measured by spectrophotometry. Subsequently, the effects of glutamate (agonist) and camptothecin (antagonist) on the recombinant yeast cell density were investigated using the same approach, and finally, the effect of camptothecin on various cell lines was determined and compared with its effect on recombinant yeast. The current study demonstrated that growth was enhanced in SMD1168H‑TOPOI as compared with that in SMD1168H. Glutamate also enhanced the growth of the SMD1168H; however, the growth effect was not enhanced in SMD1168H‑TOPOI treated with glutamate. By contrast, camptothecin caused only lower cell density and growth throughout the treatment of SMD1168H‑TOPOI. The findings of the current study indicated that SMD1168H‑TOPOI has similar characteristics to MDA‑MB‑231 cells; therefore, it can be used in a yeast‑based assay to screen for more effective compounds that may inhibit the growth of highly metastatic breast cancer cells.
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Affiliation(s)
- Jian Xin
- Department of General Surgery, Taizhou First People's Hospital in Zhejiang Province, Taizhou, Zhejiang 318020, P.R. China
| | - Wan Nor Azlin Wan Mahtar
- Department of Microbiology, School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Poh Chiew Siah
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Noorizan Miswan
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Boon Yin Khoo
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Penang, Malaysia
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5
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Wangmo C, Jarque S, Hilscherová K, Bláha L, Bittner M. In vitro assessment of sex steroids and related compounds in water and sediments - a critical review. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2018; 20:270-287. [PMID: 29251308 DOI: 10.1039/c7em00458c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Detection of endocrine disrupting compounds in water and sediment samples has gained much importance since the evidence of their effects was reported in aquatic ecosystems in the 1990s. The aim of this review is to highlight the advances made in the field of in vitro analysis for the detection of hormonally active compounds with estrogenic, androgenic and progestogenic effects in water and sediment samples. In vitro assays have been developed from yeast, mammalian and in a few cases from fish cells. These assays are based either on the hormone-mediated proliferation of sensitive cell lines or on the hormone-mediated expression of reporter genes. In vitro assays in combination with various sample enrichment methods have been used with limits of detection as low as 0.0027 ng L-1 in water, and 0.0026 ng g-1 in sediments for estrogenicity, 0.1 ng L-1 in water, and 0.5 ng g-1 in sediments for androgenicity, and 5 ng L-1 in water for progestogenicity expressed as equivalent concentrations of standard reference compounds of 17β-estradiol, dihydrotestosterone and progesterone, respectively. The experimental results and limits of quantification, however, are influenced by the methods of sample collection, preparation, and individual laboratory practices.
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Affiliation(s)
- Chimi Wangmo
- Masaryk University, Research Centre for Toxic Compounds in the Environment - RECETOX, Kamenice 5, 625 00, Brno, Czech Republic.
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Dominguez-Lopez P, Diaz-Cueto L, Aguilar-Rojas A, Arechavaleta-Velasco F. Synergistic effect of DDT and its metabolites in lipopolysaccharide-mediated TNF-α production is inhibited by progesterone in peripheral blood mononuclear cells. J Biochem Mol Toxicol 2017; 31. [PMID: 28238206 DOI: 10.1002/jbt.21907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 01/19/2017] [Accepted: 01/26/2017] [Indexed: 12/12/2022]
Abstract
Increased TNF-α levels have been associated with adverse pregnancy outcomes. Lipopolysaccharide (LPS), 1,1,1-trichloro-2,2-bis-(chlorophenyl)ethane (DDT), 1,1-bis-(chlorophenyl)-2,2-dichloroethene (DDE), and 1,1-dichloro-2,2-bis(chlorophenyl)ethane (DDD) induce TNF-α release in peripheral blood mononuclear cells (PBMC). Conversely, progesterone (P4) inhibits TNF-α secretion. Pregnant women in malaria endemic areas may be co-exposure to these compounds. Thus, this study was to investigate the synergistic effect of LPS and these pesticides in PBMC and to assess P4 influence on this synergy. Cultured PBMC were exposed to each pesticide in the presence of LPS, P4, or their combination. TNF-α was measured by ELISA. All pesticides enhanced TNF-α synthesis in PBMC. Co-exposure with LPS synergizes TNF-α production, which is blocked by progesterone. These results indicate that these organochlorines act synergistically with LPS to induce TNF-α secretion in PBMC. This effect is blocked by P4.
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Affiliation(s)
- Pablo Dominguez-Lopez
- Unidad de Investigación Médica en Medicina Reproductiva, UMAE Hospital de Gineco Obstetricia No. 4 Luis Castelazo Ayala, Instituto Mexicano del Seguro Social, México D. F., México
| | - Laura Diaz-Cueto
- Unidad de Investigación Médica en Medicina Reproductiva, UMAE Hospital de Gineco Obstetricia No. 4 Luis Castelazo Ayala, Instituto Mexicano del Seguro Social, México D. F., México
| | - Arturo Aguilar-Rojas
- Unidad de Investigación Médica en Medicina Reproductiva, UMAE Hospital de Gineco Obstetricia No. 4 Luis Castelazo Ayala, Instituto Mexicano del Seguro Social, México D. F., México
| | - Fabian Arechavaleta-Velasco
- Unidad de Investigación Médica en Medicina Reproductiva, UMAE Hospital de Gineco Obstetricia No. 4 Luis Castelazo Ayala, Instituto Mexicano del Seguro Social, México D. F., México
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7
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Chamas A, Pham HTM, Jähne M, Hettwer K, Uhlig S, Simon K, Einspanier A, Baronian K, Kunze G. Simultaneous detection of three sex steroid hormone classes using a novel yeast-based biosensor. Biotechnol Bioeng 2017; 114:1539-1549. [PMID: 28092110 DOI: 10.1002/bit.26249] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 01/09/2017] [Accepted: 01/11/2017] [Indexed: 12/15/2022]
Abstract
A biosensor detecting estrogens, progestogens, and androgens in complex samples and in a single step is described. Three Arxula adeninivorans yeast strains were created, each strain producing a different recombinant human hormone receptor and a different fluorescent reporter protein. These strains were then mixed to create G1212/YRC102-hHR-fluo, the biological component of the biosensor. During incubation with G1212/YRC102-hHR-fluo, hormones present in a sample bind to their target receptor, which leads to the production of a specific fluorescent protein. Three fluorescence scans of the yeast suspension determine which fluorescence protein has been produced, thus revealing which hormone receptor (estrogen, progesterone, and androgen) has been activated by the hormones or hormone mimics present in the sample. The biosensor has similar sensitivities to the existing A. adeninivorans cell-based assays. The detection of the three hormone classes in one single experiment reduces the labor and time required to assay for the three hormone classes. The biosensor was also trialed with animal serum samples for the detection of progestogens, androgens, and estrogens and gave results that correlated well with ELISA analysis in case of progestogens. These results highlight the potential usefulness of the biosensor for comprehensive determination of hormone status in samples from veterinary origin. Biotechnol. Bioeng. 2017;114: 1539-1549. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Alexandre Chamas
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, Gatersleben D-06466, Germany
| | - Ha Thi Minh Pham
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, Gatersleben D-06466, Germany.,Institute of Biotechnology, Vietnam Academy of Science and Technology, Cau Giay, Ha Noi, Vietnam
| | | | | | | | | | - Almuth Einspanier
- Faculty of Veterinary Medicine, Institute of Physiological Chemistry, Leipzig, Germany
| | - Kim Baronian
- School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - Gotthard Kunze
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, Gatersleben D-06466, Germany
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8
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Yeast Biosensors for Detection of Environmental Pollutants: Current State and Limitations. Trends Biotechnol 2016; 34:408-419. [DOI: 10.1016/j.tibtech.2016.01.007] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 01/19/2016] [Accepted: 01/20/2016] [Indexed: 01/17/2023]
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9
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Jarque S, Bittner M, Hilscherová K. Freeze-drying as suitable method to achieve ready-to-use yeast biosensors for androgenic and estrogenic compounds. CHEMOSPHERE 2016; 148:204-210. [PMID: 26807940 DOI: 10.1016/j.chemosphere.2016.01.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 01/08/2016] [Accepted: 01/09/2016] [Indexed: 06/05/2023]
Abstract
Recombinant yeast assays (RYAs) have been proved to be a suitable tool for the fast screening of compounds with endocrine disrupting activities. However, ready-to-use versions more accessible to less equipped laboratories and field studies are scarce and far from optimal throughputs. Here, we have applied freeze-drying technology to optimize RYA for the fast assessment of environmental compounds with estrogenic and androgenic potencies. The effects of different cryoprotectants, initial optical density and long-term storage were evaluated. The study included detailed characterization of sensitivity, robustness and reproducibility of the new ready-to-use versions, as well as comparison with the standard assays. Freeze-dried RYAs showed similar dose-responses curves to their homolog standard assays, with Lowest Observed Effect Concentration (LOEC) and Median effective Concentration (EC50) of 1 nM and 7.5 nM for testosterone, and 0.05 nM and 0.5 nM for 17β-estradiol, respectively. Freeze-dried cells stored at 4 °C retained maximum sensitivity up to 2 months, while cells stored at -18 °C showed no decrease in sensitivity throughout the study (10 months). This ready-to-use RYA is easily accessible and may be potentially used for on-site applications.
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Affiliation(s)
- Sergio Jarque
- Masaryk University, Faculty of Science, RECETOX, Kamenice 5/753, Brno CZ62500, Czech Republic
| | - Michal Bittner
- Masaryk University, Faculty of Science, RECETOX, Kamenice 5/753, Brno CZ62500, Czech Republic
| | - Klára Hilscherová
- Masaryk University, Faculty of Science, RECETOX, Kamenice 5/753, Brno CZ62500, Czech Republic.
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Chamas A, Nieter A, Pham HTM, Giersberg M, Hettwer K, Uhlig S, Simon K, Baronian K, Kunze G. Development of a recombinant Arxula adeninivorans cell bioassay for the detection of molecules with progesterone activity in wastewater. Anal Bioanal Chem 2015; 407:8109-20. [DOI: 10.1007/s00216-015-8985-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 08/10/2015] [Accepted: 08/14/2015] [Indexed: 11/28/2022]
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Kumar V, Johnson AC, Trubiroha A, Tumová J, Ihara M, Grabic R, Kloas W, Tanaka H, Kroupová HK. The challenge presented by progestins in ecotoxicological research: a critical review. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:2625-2638. [PMID: 25611781 DOI: 10.1021/es5051343] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Around 20 progestins (also called gestagens, progestogens, or progestagens) are used today in assisting a range of medical conditions from endometrial cancer to uterine bleeding and as an important component of oral contraception. These progestins can bind to a wide range of receptors including progestin, estrogen, androgen, glucocorticoid, and mineralocorticoid receptor, as well as sex hormone and corticosteroid binding globulins. It appears that only five of these (four synthetic and one natural) progestins have so far been studied in sewage effluent and surface waters. Analysis has reported values as either nondetects or low nanograms per liter in rivers. Seven of the progestins have been examined for their effects on aquatic vertebrates (fish and frogs). The greatest concern is associated with levonorgestrel, norethisterone, and gestodene and their ability to reduce egg production in fish at levels of 0.8-1.0 ng/L. The lack of environmental measurements, and some of the contradictions in existing values, however, hampers our ability to make a risk assessment. Only a few nanograms per liter of ethynodiol diacetate and desogestrel in water would be needed for fish to receive a human therapeutic dose for these progestins according to modeled bioconcentration factors. But for the other synthetic progestins levels would need to reach tens or hundreds of nanograms per liter to achieve a therapeutic dose. Nevertheless, the wide range of compounds, diverse receptor targets, and the effect on fish reproduction at sub-nanogram-per-liter levels should prompt further research. The ability to impair female reproduction at very low concentrations makes the progestins arguably the most important pharmaceutical group of concern after ethinylestradiol.
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Affiliation(s)
- Vimal Kumar
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in Ceske Budejovice , Zatisi 728/II, 389 25 Vodnany, Czech Republic
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Richter I, Fidler AE. Marine invertebrate xenobiotic-activated nuclear receptors: their application as sensor elements in high-throughput bioassays for marine bioactive compounds. Mar Drugs 2014; 12:5590-618. [PMID: 25421319 PMCID: PMC4245547 DOI: 10.3390/md12115590] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 10/31/2014] [Accepted: 11/11/2014] [Indexed: 02/07/2023] Open
Abstract
Developing high-throughput assays to screen marine extracts for bioactive compounds presents both conceptual and technical challenges. One major challenge is to develop assays that have well-grounded ecological and evolutionary rationales. In this review we propose that a specific group of ligand-activated transcription factors are particularly well-suited to act as sensors in such bioassays. More specifically, xenobiotic-activated nuclear receptors (XANRs) regulate transcription of genes involved in xenobiotic detoxification. XANR ligand-binding domains (LBDs) may adaptively evolve to bind those bioactive, and potentially toxic, compounds to which organisms are normally exposed to through their specific diets. A brief overview of the function and taxonomic distribution of both vertebrate and invertebrate XANRs is first provided. Proof-of-concept experiments are then described which confirm that a filter-feeding marine invertebrate XANR LBD is activated by marine bioactive compounds. We speculate that increasing access to marine invertebrate genome sequence data, in combination with the expression of functional recombinant marine invertebrate XANR LBDs, will facilitate the generation of high-throughput bioassays/biosensors of widely differing specificities, but all based on activation of XANR LBDs. Such assays may find application in screening marine extracts for bioactive compounds that could act as drug lead compounds.
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Affiliation(s)
- Ingrid Richter
- Environmental Technology Group, Cawthron Institute, Private Bag 2, Nelson 7012, New Zealand.
| | - Andrew E Fidler
- Environmental Technology Group, Cawthron Institute, Private Bag 2, Nelson 7012, New Zealand.
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Ahmed H, Yeh J, Lin W, Forsberg N, Cheng W, Ou B. Validation of a luciferase bioassay to detect the progestative activity in gilts whose estrus was induced by an uterotonic herb (Ligusticum chuanxiong). Livest Sci 2014. [DOI: 10.1016/j.livsci.2014.02.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Blüthgen N, Sumpter JP, Odermatt A, Fent K. Effects of low concentrations of the antiprogestin mifepristone (RU486) in adults and embryos of zebrafish (Danio rerio): 2. Gene expression analysis and in vitro activity. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2013; 144-145:96-104. [PMID: 24177212 DOI: 10.1016/j.aquatox.2013.09.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 09/22/2013] [Accepted: 09/28/2013] [Indexed: 06/02/2023]
Abstract
Here, we analyzed the transcriptional effects of the antiprogestin mifepristone (MIF, RU486) and progesterone (P4) in zebrafish as well as their in vitro activities in yeast-based reporter gene assays. This study is associated with the reproduction study in adult zebrafish and embryos exposed for 21 days to 5, 39, 77 ng/L MIF, and 25 ng/L P4 (Blüthgen et al., 2013a). The in vitro activities of MIF and P4 were investigated using a series of recombinant yeast-based assays (YES, YAS, YPS) and compared to transcriptional alterations obtained in fish tissues and embryos from the exposure study. MIF elicited antiestrogenic, androgenic and progestogenic activities in recombinant yeast, similar to P4, and no antiprogestogenic activity in vitro. The transcriptional alterations of steroid hormone receptors were similar in adult males and females, and more pronounced in embryos. MIF tended to transcriptionally down-regulate the androgen (ar), progesterone (pgr) and glucocorticoid (gr) receptors in adult fish and embryos. Transcripts of the estrogen receptor (esr1) and vitellogenin (vtg1) were not significantly altered. A trend for down-regulation was observed for transcripts of genes belonging to steroidogenic enzymes including 17β-hydroxysteroid dehydrogenase type 3 (hsd17b3), 3 β-hydroxysteroid dehydrogenase (hsd3b), P450 aromatase A (cyp19a) and 11β-hydroxylase (cyp11b). P4 resulted in similar transcriptional alterations as MIF. The data indicate that gene expression changes (here and later gene expression is taken as synonym to gene transcription) and in vitro activities match only in part including the lack of antiprogestogenic activity of MIF. Additionally, effects on reproduction and gonad histology described in the associated report (Blüthgen et al., 2013a) can only partly be explained by gene expression data presented here.
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Affiliation(s)
- Nancy Blüthgen
- University of Applied Sciences Northwestern Switzerland, School of Life Sciences, Institute for Ecopreneurship, Gründenstrasse 40, 4132 Muttenz, Switzerland; University of Basel, Division of Molecular and Systems Toxicology, Department of Pharmaceutical Sciences, Klingelbergstrasse 50, 4056 Basel, Switzerland
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15
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Higaki S, Koyama Y, Shimada M, Ono Y, Tooyama I, Fujioka Y, Sakai N, Ikeuchi T, Takada T. Response to fish specific reproductive hormones and endocrine disrupting chemicals of a Sertoli cell line expressing endogenous receptors from an endemic cyprinid Gnathopogon caerulescens. Gen Comp Endocrinol 2013; 191:65-73. [PMID: 23770217 DOI: 10.1016/j.ygcen.2013.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 06/01/2013] [Accepted: 06/01/2013] [Indexed: 11/25/2022]
Abstract
Fish Sertoli cells play a critical role in spermatogenesis by mediating androgen and progestogen signaling. Their hormonal response, however, considerably differ among species. Therefore it would be ideal to use Sertoli cells originated from the fish of interest to investigate the effects of hormones as well as endocrine disrupting chemicals (EDCs). The aim of this study was to investigate the responses to reproductive hormones and EDCs of a Sertoli cell line that we established from an endemic cyprinid Gnathopogon caerulescens. As the Sertoli cell line expressed endogenous androgen and progestogen receptors, we were able to detect hormone responses by transfecting only a reporter vector (pGL4.36) expressing luciferase under the control of the mouse mammary tumor virus-long terminal repeat (MMTV-LTR) promoter into the cell line. Unlike previous reporter gene assays using fish steroid hormone receptors expressed in mammalian cell lines, luciferase activities were induced by the fish specific androgen (11-ketotestosterone) and progestogen (17α,20β-dihydroxy-4-pregnen-3-one), but not by testosterone and progesterone, at physiologically relevant concentrations. Furthermore, we found 4-nonylphenol (NP) but not bisphenol A showed strong anti-androgenic effects, implying that NP may have direct anti-androgenic effects on fish Sertoli cells in vivo. This is the first evidence, to the best of our knowledge, of anti-androgenic effects of NP in a fish Sertoli cell line. In addition, neither NP nor BPA showed anti-progestogenic effects. These results suggest that the Sertoli cell line established from the fish of interest can be a useful in vitro tool for investigating the mechanisms of reproductive hormones and EDCs in the specific fish.
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Affiliation(s)
- Shogo Higaki
- Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
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Fischer L, Deppert W, Pfeifer D, Stanzel S, Weimer M, Hanjalic-Beck A, Stein A, Straßer M, Zahradnik H, Schaefer W. Potential hazards to embryo implantation: A human endometrial in vitro model to identify unwanted antigestagenic actions of chemicals. Toxicol Appl Pharmacol 2012; 260:232-40. [DOI: 10.1016/j.taap.2012.02.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 02/22/2012] [Accepted: 02/26/2012] [Indexed: 10/28/2022]
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Tang JYM, Glenn E, Thoen H, Escher BI. In vitro bioassay for reactive toxicity towards proteins implemented for water quality monitoring. ACTA ACUST UNITED AC 2012; 14:1073-81. [DOI: 10.1039/c2em10927a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Kumar SN, Telang AG, Singh KP, Jain AK, Afroz M, Patil RD. Experimentally Induced Toxicity of Ochratoxin A and Endosulfan in Male Wistar Rats: A Hormonal Disorder. ACTA ACUST UNITED AC 2011. [DOI: 10.3923/javaa.2011.1750.1755] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Bovee TFH, Helsdingen RJR, Hamers ARM, Brouwer BA, Nielen MWF. Recombinant cell bioassays for the detection of (gluco)corticosteroids and endocrine-disrupting potencies of several environmental PCB contaminants. Anal Bioanal Chem 2011; 401:873-82. [PMID: 21681646 PMCID: PMC3140938 DOI: 10.1007/s00216-011-5162-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2011] [Revised: 05/27/2011] [Accepted: 06/02/2011] [Indexed: 01/28/2023]
Abstract
Sensitive and robust bioassays for glucocorticoids are very useful for the pharmaceutical industry, environmental scientists and veterinary control. Here, a recombinant yeast cell was constructed that expresses the human glucocorticoid receptor alpha and a green fluorescent reporter protein in response to glucocorticoids. Both the receptor construct and the reporter construct were stably integrated into the yeast genome. The correct and specific functioning of this yeast glucocorticoid bioassay was studied by exposures to cortisol and other related compounds and critically compared to a GR-CALUX bioassay based on a human bone cell. Although less sensitive, the new yeast glucocorticoid bioassay showed sensitivity towards all (gluco)corticoids tested, with the following order in relative potencies: budesonide >> corticosterone > dexamethasone > cortisol = betamethasone > prednisolone > aldosterone. Hormone representatives for other hormone nuclear receptors, like 17β-estradiol for the oestrogen receptor, 5α-dihydrotestosterone for the androgen receptor and progesterone for the progesterone receptor, showed no clear agonistic responses, whilst some polychlorinated biphenyls were clearly able to interfere with the GR activity.
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Affiliation(s)
- Toine F H Bovee
- RIKILT-Institute of Food Safety, Wageningen University and Research Centre, Akkermaalsbos 2, 6708 WB Wageningen, The Netherlands.
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Sonneveld E, Pieterse B, Schoonen WG, van der Burg B. Validation of in vitro screening models for progestagenic activities: Inter-assay comparison and correlation with in vivo activity in rabbits. Toxicol In Vitro 2011; 25:545-54. [DOI: 10.1016/j.tiv.2010.11.018] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Revised: 11/12/2010] [Accepted: 11/26/2010] [Indexed: 12/23/2022]
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Svobodová K, Cajthaml T. New in vitro reporter gene bioassays for screening of hormonal active compounds in the environment. Appl Microbiol Biotechnol 2010; 88:839-47. [PMID: 20737269 DOI: 10.1007/s00253-010-2833-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 08/09/2010] [Accepted: 08/09/2010] [Indexed: 01/26/2023]
Abstract
Identification of chemicals with endocrine-disrupting activities in the past two decades has led to the need for sensitive assays for detection and monitoring of these activities in the environment. In vitro reporter gene assays represent a relatively fast and easy-to-perform method for detection of compounds that are able to bind to hormonal receptors and stimulate or silence their transactivation activity, thus interfering with the hormone signaling pathways. This paper reviews upgrades on reporter gene assays performed during the last decade. The utilization of new reporter genes (luciferase and green fluorescent protein coding genes) significantly improved the sensitivity of the tests and made them faster. Reporter gene assays now represent a high-throughput system for screening chemicals for hormonal activity. Finally, modification of test set-ups for testing anti-hormonal activities also enabled measurements of endocrine-disrupting activities in complex environmental samples such as sediments and wastewater treatment plant effluents.
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Affiliation(s)
- Katerina Svobodová
- Laboratory of Environmental Biotechnology, Institute of Microbiology of ASCR, v.v.i., Videnska, 1083 Prague, Czech Republic.
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Viswanath G, Chatterjee S, Dabral S, Nanguneri SR, Divya G, Roy P. Anti-androgenic endocrine disrupting activities of chlorpyrifos and piperophos. J Steroid Biochem Mol Biol 2010; 120:22-9. [PMID: 20211256 DOI: 10.1016/j.jsbmb.2010.02.032] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Revised: 01/30/2010] [Accepted: 02/25/2010] [Indexed: 01/13/2023]
Abstract
The present work describes the screening and characterization of some common endocrine disrupting chemicals for their (anti)androgenic activities. Various chemicals (mostly pesticides and pharmaceuticals) were screened with the NIH3T3 cell line stably expressing human androgen receptor (hAR) and luciferase reporter gene for their ability to stimulate luciferase activity or inhibit the response that was evoked by 0.4nM testosterone. The most potent anti-androgenic compounds identified in our assay included chlorpyrifos, endosulfan and piperophos. Finally, the chemicals were analyzed for their effects on steriodogenesis in rat Leydig cells. Piperophos and chlorpyrifos showed a significant decrease in testosterone biosynthesis by Leydig cells. RT-PCR studies showed decrease in the expression of key steroidogenic enzymes: cytochrome P450scc, 3beta-HSD and 17beta-HSD and immunoblot analysis demonstrated a decrease in steroidogenic acute regulatory (StAR) protein expression by both these chemicals. Chlorpyrifos also showed a decrease in LH receptor stimulated cAMP production. In conclusion, we demonstrate that commonly used pesticides like chlorpyrifos and piperophos pose serious threat to male reproductive system by interfering at various levels of androgen biosynthesis.
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Affiliation(s)
- Gunda Viswanath
- Molecular Endocrinology Laboratory, Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee 247 667, Uttarakhand, India
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Chemical and biological analysis of estrogenic, progestagenic and androgenic steroids in the environment. Trends Analyt Chem 2009. [DOI: 10.1016/j.trac.2009.03.006] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mori T, Murata M, Yoshino T, Nakasono S, Saito F, Takeyama H, Matsunaga T. A stable human progesterone receptor expressing HeLa reporter cell line as a tool in chemical evaluation at the different cell-cycle phases. Toxicol Lett 2009; 186:123-9. [DOI: 10.1016/j.toxlet.2009.01.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2008] [Revised: 01/08/2009] [Accepted: 01/08/2009] [Indexed: 10/21/2022]
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Piña B, Boronat S, Casado M, Olivares A. Recombinant Yeast Assays and Gene Expression Assays for the Analysis of Endocrine Disruption. THE HANDBOOK OF ENVIRONMENTAL CHEMISTRY 2009. [DOI: 10.1007/978-3-540-36253-1_4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Viswanath G, Halder S, Divya G, Majumder CB, Roy P. Detection of potential (anti)progestagenic endocrine disruptors using a recombinant human progesterone receptor binding and transactivation assay. Mol Cell Endocrinol 2008; 295:1-9. [PMID: 18801410 DOI: 10.1016/j.mce.2008.08.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2007] [Revised: 07/26/2008] [Accepted: 08/20/2008] [Indexed: 11/21/2022]
Abstract
The present work describes the identification of (anti)progestin endocrine disrupting chemicals (EDC) using a two step screening system. In the first step a competitive binding assay was developed using recombinant human progesterone receptor (hPR). The tested chemicals were of various classes like insecticides, their metabolites, industrial chemicals and waste water treatment plant (WWTP) effluents. All the tested chemicals demonstrated a high affinity binding for hPR. The average IC50 values of the test chemicals were within the range of 1-25microM. In the second step of screening, a mammalian cell-based hPR transactivation assay was developed where HEK 293 cells were co-transfected with hPR and luciferase reporter gene under the control of progesterone-response element. Stimulation of the cells with progesterone resulted in about 25-fold up regulation of luciferase activity, with EC50 value of 4nM. Potent anti-progesterone, RU486, significantly inhibited progesterone-induced transactivation and non-progestagenic steroids failed to transactivate hPR till 1microM concentrations. The chemicals showing high binding affinities in competitive binding assays were then tested in transactivation assay and all of them were found to be anti-progestative except WWTP effluents. Transactivation assays using extracted water samples from five different WWTP effluents showed that it was rich in progestative compounds. The levels of induction caused by these effluents were in the range of 15-25% of induction by progesterone and they represented about 6ng/l equivalent progesterone activities. In conclusion, we demonstrated that this two step assay provides an efficient screening tool for the detection of (anti)progestative EDC in various samples.
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Affiliation(s)
- Gunda Viswanath
- Molecular Endocrinology Laboratory, Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
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A sensitive recombinant cell-based bioluminescent assay for detection of androgen-like compounds. Nat Protoc 2008; 3:1895-902. [DOI: 10.1038/nprot.2008.189] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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