Assessment of phytoestrogen and mycoestrogen recognition by recombinant human estrogen receptor-α using ligand titration arrays.
Assessment of phytoestrogen and mycoestrogen recognition by recombinant human estrogen receptor-α using ligand titration arrays.
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使用配体滴定阵列评估重组人雌激素受体-α 的植物雌激素和真菌雌激素识别。
DOI:
10.1002/pca.2417
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Wittliff,JamesL
中科院分区:
文献类型:
--
作者:
Andres,SarahA;Bumpus,StefanieB;Wittliff,JamesL
IntroductionExposure to phytoestrogens and mycoestrogens has emerged as a public health issue due to their potentially endocrine disruption activities resulting from direct interaction with sex‐steroid hormone receptors. There is a significant requirement for comprehensive, reproducible methods to determine the extent of estrogen mimicry by compounds encountered in the environment to estimate risk:benefit ratios, particularly in humans.ObjectiveTo develop a systematic approach for assessing recognition of chemically diverse compounds by human estrogen receptor proteins to aid in their assessment as endocrine disruptor compounds (EDCs).MethodsRecombinant human estrogen receptor‐α protein (rhERα) was expressed inSaccharomyces cervisiaeas an ubiquitin fusion under control of a CUP1 promoter and partially purified with heparin affinity chromatography in the unliganded state. A novel radio‐ligand binding array was developed to evaluate structurally diverse compounds, both naturally occurring and synthetic, for estrogen binding activity and affinity.ResultsBinding affinities of suspected estrogen mimics for rhERα were calculated over a range of [3H]estradiol‐17β concentrations using Lundon OneSite® and Compete® software.Conclusionβ‐zearalanol, a mycoestrogen similar to zearalenone used as an ICCVAM validation substance for thein vitroestrogen receptor binding assays (ICCAM report), was employed as a model estrogen mimic to illustrate the approach, methods and calculations using these techniques. Copyright © 2013 John Wiley & Sons, Ltd.
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DOI:
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发表时间:
2004
期刊:
Toxicological sciences : an official journal of the Society of Toxicology
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1994
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Biochimica et biophysica acta
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1973
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作者:
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