1
|
Rush CM, Blanchard Z, Polaski JT, Osborne KS, Osby K, Vahrenkamp JM, Yang CH, Lum DH, Hagan CR, Leslie KK, Pufall MA, Thiel KW, Gertz J. Characterization of HCI-EC-23 a novel estrogen- and progesterone-responsive endometrial cancer cell line. Sci Rep 2022; 12:19731. [PMID: 36396974 PMCID: PMC9672046 DOI: 10.1038/s41598-022-24211-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022] Open
Abstract
Most endometrial cancers express the hormone receptor estrogen receptor alpha (ER) and are driven by excess estrogen signaling. However, evaluation of the estrogen response in endometrial cancer cells has been limited by the availability of hormonally responsive in vitro models, with one cell line, Ishikawa, being used in most studies. Here, we describe a novel, adherent endometrioid endometrial cancer (EEC) cell line model, HCI-EC-23. We show that HCI-EC-23 retains ER expression and that ER functionally responds to estrogen induction over a range of passages. We also demonstrate that this cell line retains paradoxical activation of ER by tamoxifen, which is also observed in Ishikawa and is consistent with clinical data. The mutational landscape shows that HCI-EC-23 is mutated at many of the commonly altered genes in EEC, has relatively few copy-number alterations, and is microsatellite instable high (MSI-high). In vitro proliferation of HCI-EC-23 is strongly reduced upon combination estrogen and progesterone treatment. HCI-EC-23 exhibits strong estrogen dependence for tumor growth in vivo and tumor size is reduced by combination estrogen and progesterone treatment. Molecular characterization of estrogen induction in HCI-EC-23 revealed hundreds of estrogen-responsive genes that significantly overlapped with those regulated in Ishikawa. Analysis of ER genome binding identified similar patterns in HCI-EC-23 and Ishikawa, although ER exhibited more bound sites in Ishikawa. This study demonstrates that HCI-EC-23 is an estrogen- and progesterone-responsive cell line model that can be used to study the hormonal aspects of endometrial cancer.
Collapse
Affiliation(s)
- Craig M Rush
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Zannel Blanchard
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Jacob T Polaski
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Kyle S Osborne
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Krystle Osby
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Jeffery M Vahrenkamp
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Chieh-Hsiang Yang
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - David H Lum
- Preclinical Research Resource, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Christy R Hagan
- Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, Kansas City, KS, USA
| | - Kimberly K Leslie
- Division of Molecular Medicine, Departments of Internal Medicine and Obstetrics and Gynecology, University of New Mexico Comprehensive Cancer Center, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Miles A Pufall
- Department of Biochemistry and Molecular Biology, Holden Comprehensive Cancer Center, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Kristina W Thiel
- Department of Obstetrics and Gynecology, University of Iowa, Iowa City, IA, USA
| | - Jason Gertz
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA.
| |
Collapse
|
2
|
Discovery of Highly Functionalized 5-hydroxy-2H-pyrrol-2-ones That Exhibit Antiestrogenic Effects in Breast and Endometrial Cancer Cells and Potentiate the Antitumoral Effect of Tamoxifen. Cancers (Basel) 2022; 14:cancers14215174. [DOI: 10.3390/cancers14215174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 11/17/2022] Open
Abstract
Tamoxifen improves the overall survival rate in hormone receptor-positive breast cancer patients. However, despite the fact that it exerts antagonistic effects on the ERα, it can act as a partial agonist, resulting in tumor growth in estrogen-sensitive tissues. In this study, highly functionalized 5-hydroxy-2H-pyrrol-2-ones were synthesized and evaluated by using ERα- and phenotype-based screening assays. Compounds 32 and 35 inhibited 17β-estradiol (E2)-stimulated ERα-mediated transcription of the luciferase reporter gene in breast cancer cells without inhibition of the transcriptional activity mediated by androgen or glucocorticoid receptors. Compound 32 regulated E2-stimulated ERα-mediated transcription by partial antagonism, whereas compound 35 caused rapid and non-competitive inhibition. Monitoring of 2D and 3D cell growth confirmed potent antitumoral effects of both compounds on ER-positive breast cancer cells. Furthermore, compounds 32 and 35 caused apoptosis and blocked the cell cycle of ER-positive breast cancer cells in the sub-G1 and G0/G1 phases. Interestingly, compound 35 suppressed the functional activity of ERα in the uterus, as demonstrated by the inhibition of E2-stimulated transcription of estrogen and progesterone receptors and alkaline phosphatase enzymatic activity. Compound 35 showed a relatively low binding affinity with ERα. However, its antiestrogenic effect was associated with an increased polyubiquitination and a reduced protein expression of ERα. Clinically relevant, a possible combinatory therapy with compound 35 may enhance the antitumoral efficacy of 4-hydroxy-tamoxifen in ER-positive breast cancer cells. In silico ADME predictions indicated that these compounds exhibit good drug-likeness, which, together with their potential antitumoral effects and their lack of estrogenic activity, offers a pharmacological opportunity to deepen the study of ER-positive breast cancer treatment.
Collapse
|
3
|
Balázs A, Faisal Z, Csepregi R, Kőszegi T, Kriszt B, Szabó I, Poór M. In Vitro Evaluation of the Individual and Combined Cytotoxic and Estrogenic Effects of Zearalenone, Its Reduced Metabolites, Alternariol, and Genistein. Int J Mol Sci 2021; 22:6281. [PMID: 34208060 PMCID: PMC8230625 DOI: 10.3390/ijms22126281] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/07/2021] [Accepted: 06/09/2021] [Indexed: 12/04/2022] Open
Abstract
Mycotoxins are toxic metabolites of filamentous fungi. Previous studies demonstrated the co-occurrence of Fusarium and Alternaria toxins, including zearalenone (ZEN), ZEN metabolites, and alternariol (AOH). These xenoestrogenic mycotoxins appear in soy-based meals and dietary supplements, resulting in the co-exposure to ZEN and AOH with the phytoestrogen genistein (GEN). In this study, the cytotoxic and estrogenic effects of ZEN, reduced ZEN metabolites, AOH, and GEN are examined to evaluate their individual and combined impacts. Our results demonstrate that reduced ZEN metabolites, AOH, and GEN can aggravate ZEN-induced toxicity; in addition, the compounds tested exerted mostly synergism or additive combined effects regarding cytotoxicity and/or estrogenicity. Therefore, these observations underline the importance and the considerable risk of mycotoxin co-exposure and the combined effects of mycoestrogens with phytoestrogens.
Collapse
Affiliation(s)
- Adrienn Balázs
- Department of Environmental Toxicology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly u. 1, H-2100 Gödöllő, Hungary; (A.B.); (I.S.)
| | - Zelma Faisal
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624 Pécs, Hungary;
- Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary;
| | - Rita Csepregi
- Lab-on-a-Chip Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary;
- Department of Laboratory Medicine, Medical School, University of Pécs, Ifjúság útja 13, H-7624 Pécs, Hungary
| | - Tamás Kőszegi
- Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary;
- Lab-on-a-Chip Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary;
- Department of Laboratory Medicine, Medical School, University of Pécs, Ifjúság útja 13, H-7624 Pécs, Hungary
| | - Balázs Kriszt
- Department of Environmental Safety, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly u. 1, H-2100 Gödöllő, Hungary;
| | - István Szabó
- Department of Environmental Toxicology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly u. 1, H-2100 Gödöllő, Hungary; (A.B.); (I.S.)
| | - Miklós Poór
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624 Pécs, Hungary;
- Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary;
| |
Collapse
|
4
|
Aichinger G, Bliem G, Marko D. Systemically Achievable Doses of Beer Flavonoids Induce Estrogenicity in Human Endometrial Cells and Cause Synergistic Effects With Selected Pesticides. Front Nutr 2021; 8:691872. [PMID: 34164426 PMCID: PMC8215115 DOI: 10.3389/fnut.2021.691872] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 05/11/2021] [Indexed: 12/13/2022] Open
Abstract
Some prenylated polyphenols originating from hops, which are thus natural constituents of beer, have been discussed critically for their agonistic potential toward estrogen receptors. So far, little attention has been attributed to the fact that humans are typically not exposed to isolated compounds, but to mixtures which for example might comprise in addition to hop flavonoids further xenoestrogens, e.g., certain pesticides used for plant protection of hops and barley. Thus, we used the alkaline phosphatase assay to assess combinatory estrogenic effects of three signature compounds – xanthohumol, 8-prenylnaringenin and iso-xanthohumol–on Ishikawa cells in a combination that resembled the concentration ratios observable in beer. Moreover, we added this natural flavonoid pattern to a mixture of representative estrogenic pesticides to assess their combined effects. Using state-of-the-art statistical tools, we observed cumulative to slightly synergistic effects between isolated flavonoids as well as the flavonoid and the pesticide mixture. Of potential importance, these effects were found at low nanomolar hop polyphenol concentrations that one can reasonably expect to occur in vivo after the consumption of strongly hopped beer. Taken together, our results imply that cumulative/synergistic estrogenicity should be explored in detail and urgently be incorporated into risk assessment of prenylated chalcones.
Collapse
Affiliation(s)
- Georg Aichinger
- Department for Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Vienna, Austria.,Laboratory of Toxicology, Department of Health Sciences and Technology, Eidgenoessische Technische Hochschule (ETH) Zurich, Zurich, Switzerland
| | - Gloria Bliem
- Department for Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Doris Marko
- Department for Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Vienna, Austria
| |
Collapse
|
5
|
Alderman MH, Taylor HS. Molecular mechanisms of estrogen action in female genital tract development. Differentiation 2021; 118:34-40. [PMID: 33707128 DOI: 10.1016/j.diff.2021.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 12/29/2020] [Accepted: 01/04/2021] [Indexed: 10/22/2022]
Abstract
The development of the female reproductive tract can be divided into three parts consisting of Müllerian duct organogenesis, pre-sexual maturation organ development, and post-sexual maturation hormonal regulation. In primates, Müllerian duct organogenesis proceeds in an estrogen independent fashion based on transcriptional pathways that are suppressed in males by the presence of AMH and SRY. However, clinical experience indicates that exposure to xenoestrogens such as diethylstilbestrol (DES) during critical periods including late organogenesis and pre-sexual maturational development can have substantial effects on uterine morphology, and confer increased risk of disease states later in life. Recent evidence has demonstrated that these effects are in part due to epigenetic regulation of gene expression, both in the form of aberrant CpG methylation, and accompanying histone modifications. While xenoestrogens and selective estrogen receptor modulators (SERMS) both can induce non-canonical binding confirmations in estrogen receptors, the primate specific fetal estrogens Estriol and Estetrol may act in a similar fashion to alter gene expression through tissue specific epigenetic modulation.
Collapse
Affiliation(s)
- Myles H Alderman
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT, 06520, USA; Yale Stem Cell Center, Yale School of Medicine, New Haven, CT, 06520, USA
| | - Hugh S Taylor
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT, 06520, USA.
| |
Collapse
|
6
|
Baxter E, Windloch K, Kelly G, Lee JS, Gannon F, Brennan DJ. Molecular basis of distinct oestrogen responses in endometrial and breast cancer. Endocr Relat Cancer 2019; 26:31-46. [PMID: 30121621 DOI: 10.1530/erc-17-0563] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 08/13/2018] [Indexed: 12/12/2022]
Abstract
Up to 80% of endometrial and breast cancers express oestrogen receptor alpha (ERα). Unlike breast cancer, anti-oestrogen therapy has had limited success in endometrial cancer, raising the possibility that oestrogen has different effects in both cancers. We investigated the role of oestrogen in endometrial and breast cancers using data from The Cancer Genome Atlas (TCGA) in conjunction with cell line studies. Using phosphorylation of ERα (ERα-pSer118) as a marker of transcriptional activation of ERα in TCGA datasets, we found that genes associated with ERα-pSer118 were predominantly unique between tumour types and have distinct regulators. We present data on the alternative and novel roles played by SMAD3, CREB-pSer133 and particularly XBP1 in oestrogen signalling in endometrial and breast cancer.
Collapse
Affiliation(s)
- Eva Baxter
- Department of Cell and Molecular Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Karolina Windloch
- Department of Cell and Molecular Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Greg Kelly
- Department of Cell and Molecular Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Jason S Lee
- Department of Cell and Molecular Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Frank Gannon
- Department of Cell and Molecular Biology, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Donal J Brennan
- UCD School of Medicine, Catherine McAuley Research Centre, Mater Misericordiae University Hospital, Dublin, Ireland
- Cancer Biology and Therapeutics Laboratory, UCD Conway Institute of Biomolecular and Biomedical Science, University College Dublin, Belfield, Dublin, Ireland
- Systems Biology Ireland, University College Dublin, Belfield, Dublin, Ireland
| |
Collapse
|
7
|
Gibson DA, Collins F, Cousins FL, Esnal Zufiaurre A, Saunders PTK. The impact of 27-hydroxycholesterol on endometrial cancer proliferation. Endocr Relat Cancer 2018; 25:381-391. [PMID: 29371332 PMCID: PMC5847183 DOI: 10.1530/erc-17-0449] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 01/25/2018] [Indexed: 12/14/2022]
Abstract
Endometrial cancer (EC) is the most common gynaecological malignancy. Obesity is a major risk factor for EC and is associated with elevated cholesterol. 27-hydroxycholesterol (27HC) is a cholesterol metabolite that functions as an endogenous agonist for Liver X receptor (LXR) and a selective oestrogen receptor modulator (SERM). Exposure to oestrogenic ligands increases risk of developing EC; however, the impact of 27HC on EC is unknown. Samples of stage 1 EC (n = 126) were collected from postmenopausal women undergoing hysterectomy. Expression of LXRs (NR1H3, LXRα; NR1H2, LXRβ) and enzymes required for the synthesis (CYP27A1) or breakdown (CYP7B1) of 27HC were detected in all grades of EC. Cell lines originating from well-, moderate- and poorly-differentiated ECs (Ishikawa, RL95, MFE 280 respectively) were used to assess the impact of 27HC or the LXR agonist GW3965 on proliferation or expression of a luciferase reporter gene under the control of LXR- or ER-dependent promoters (LXRE, ERE). Incubation with 27HC or GW3965 increased transcription via LXRE in Ishikawa, RL95 and MFE 280 cells (P < 0.01). 27HC selectively activated ER-dependent transcription (P < 0.001) in Ishikawa cells and promoted proliferation of both Ishikawa and RL95 cells (P < 0.001). In MFE 280 cells, 27HC did not alter proliferation but selective targeting of LXR with GW3965 significantly reduced cell proliferation (P < 0.0001). These novel results suggest that 27HC can contribute to risk of EC by promoting proliferation of endometrial cancer epithelial cells and highlight LXR as a potential therapeutic target in the treatment of advanced disease.
Collapse
Affiliation(s)
- Douglas A Gibson
- Medical Research Council Centre for Inflammation ResearchThe University of Edinburgh, Queen’s Medical Research Institute, Edinburgh, UK
- Correspondence should be addressed to D A Gibson:
| | | | | | | | | |
Collapse
|
8
|
Vejdovszky K, Schmidt V, Warth B, Marko D. Combinatory estrogenic effects between the isoflavone genistein and the mycotoxins zearalenone and alternariol in vitro. Mol Nutr Food Res 2016; 61. [PMID: 27739238 DOI: 10.1002/mnfr.201600526] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 09/28/2016] [Accepted: 10/04/2016] [Indexed: 12/11/2022]
Abstract
SCOPE The isoflavone genistein, present in soy-based food and dietary supplements, is known for its estrogenic potential. In addition to phytoestrogens, food may also contain mycotoxins with estrogenic properties like zearalenone or alternariol, raising the question on potential combinatory effects of these xenoestrogens. METHODS AND RESULTS Combinatory estrogenic effects of genistein with zearalenone or alternariol were studied in the human endometrial adenocarcinoma cell line Ishikawa as expression of alkaline phosphatase (AlP) activity. Combinations of genistein with either zearalenone or alternariol, showed synergism and antagonism in the AlP assay, depending on the combination ratios and the concentration range. For combinations of zearalenone with genistein synergistic effects dominated. CONCLUSION We demonstrate that mixture effects of phyto- and mycoestrogens potentially pose unexpected risks to consumers. Our study highlights the necessity of according considerations regarding combinatory effects in future risk assessment. The applied in vitro study design represents a cost-efficient screening method to discover interactive effects of estrogens as a basic decision tool for priority risk assessment.
Collapse
Affiliation(s)
- Katharina Vejdovszky
- Faculty of Chemistry, Department of Food Chemistry and Toxicology, University of Vienna, Vienna, Austria
| | - Verena Schmidt
- Faculty of Chemistry, Department of Food Chemistry and Toxicology, University of Vienna, Vienna, Austria
| | - Benedikt Warth
- Faculty of Chemistry, Department of Food Chemistry and Toxicology, University of Vienna, Vienna, Austria
| | - Doris Marko
- Faculty of Chemistry, Department of Food Chemistry and Toxicology, University of Vienna, Vienna, Austria
| |
Collapse
|
9
|
Vejdovszky K, Hahn K, Braun D, Warth B, Marko D. Synergistic estrogenic effects of Fusarium and Alternaria mycotoxins in vitro. Arch Toxicol 2016; 91:1447-1460. [PMID: 27401186 PMCID: PMC5316405 DOI: 10.1007/s00204-016-1795-7] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 07/05/2016] [Indexed: 12/05/2022]
Abstract
Mycotoxins are toxic secondary metabolites formed by various fungal species that are found as natural contaminants in food. This very heterogeneous group of compounds triggers multiple toxic mechanisms, including endocrine disruptive potential. Current risk assessment of mycotoxins, as for most chemical substances, is based on the effects of single compounds. However, concern on a potential enhancement of risks by interactions of single substances in naturally occurring mixtures has greatly increased recently. In this study, the combinatory effects of three mycoestrogens were investigated in detail. This includes the endocrine disruptors zearalenone (ZEN) and α-zearalenol (α-ZEL) produced by Fusarium fungi and alternariol (AOH), a cytotoxic and estrogenic mycotoxin formed by Alternaria species. For evaluation of effects, estrogen-dependent activation of alkaline phosphatase (AlP) and cell proliferation were tested in the adenocarcinoma cell line Ishikawa. The estrogenic potential varied among the single substances. Half maximum effect concentrations (EC50) for AlP activation were evaluated for α-ZEL, ZEN and AOH as 37 pM, 562 pM and 995 nM, respectively. All three mycotoxins were found to act as partial agonists. The majority of binary combinations, even at very low concentrations in the case of α-ZEL, showed strong synergism in the AlP assay. These potentiating phenomena of mycotoxin mixtures highlight the urgent need to incorporate combinatory effects into future risk assessment, especially when endocrine disruptors are involved. To the best of our knowledge, this study presents the first investigation on synergistic effects of mycoestrogens.
Collapse
Affiliation(s)
- Katharina Vejdovszky
- Department of Food Chemistry and Toxicology, University of Vienna, Waehringer Str. 38, 1090, Vienna, Austria
| | - Kathrin Hahn
- Department of Food Chemistry and Toxicology, University of Vienna, Waehringer Str. 38, 1090, Vienna, Austria
| | - Dominik Braun
- Department of Food Chemistry and Toxicology, University of Vienna, Waehringer Str. 38, 1090, Vienna, Austria
| | - Benedikt Warth
- Department of Food Chemistry and Toxicology, University of Vienna, Waehringer Str. 38, 1090, Vienna, Austria
| | - Doris Marko
- Department of Food Chemistry and Toxicology, University of Vienna, Waehringer Str. 38, 1090, Vienna, Austria.
| |
Collapse
|
10
|
Tchoumtchoua J, Makropoulou M, Ateba SB, Boulaka A, Halabalaki M, Lambrinidis G, Meligova AK, Mbanya JC, Mikros E, Skaltsounis AL, Mitsiou DJ, Njamen D, Alexis MN. Estrogenic activity of isoflavonoids from the stem bark of the tropical tree Amphimas pterocarpoides, a source of traditional medicines. J Steroid Biochem Mol Biol 2016; 158:138-148. [PMID: 26706281 DOI: 10.1016/j.jsbmb.2015.12.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 11/26/2015] [Accepted: 12/13/2015] [Indexed: 12/14/2022]
Abstract
Various preparations of the African tree Amphimas pterocarpoides Harms are traditionally used to treat endocrine- related adverse health conditions. In the ovariectomized rat, the enriched in phenolics fraction of the methanol extract of stem bark of A. pterocarpoides acted as vaginotrophic agent of considerably weaker uterotrophic activity compared to estradiol. Evaluation of the fraction and 11 isoflavonoids isolated therefrom using Ishikawa cells and estrogen receptor (ER) isotype-specific reporter cells suggested that the estrogenic activity of the fraction could be attributed primarily to daidzein and dihydroglycitein and secondarily to glycitein. The potency-based selectivity of daidzein, dihydroglycitein and glycitein for gene expression through ERβ versus ERα, expressed relative to estradiol, was 37, 27 and 20, respectively. However, the rank order of relative-to-estradiol potencies of induction of alkaline phosphatase in Ishikawa cells, a reliable marker of estrogenic activity, was daidzein>dihydroglycitein>>glycitein. The considerably higher estrogenic activity of dihydroglycitein compared to glycitein could be attributed to the partial agonist/antagonist activity of dihydroglycitein through ERβ. Calculation of theoretical free energies of binding predicted the partial agonism/antagonism of dihydroglycitein through ERβ. The fraction and the isolated isoflavonoids promoted lactogenic differentiation of HC11 mammary epithelial cells at least as effectively as premenopausal levels of estradiol. This data suggests that the estrogenic activity of the fraction likely depends on the metabolism of glycitein to dihydroglycitein; that the fraction could exert vaginotrophic activity likely without challenging endocrine cancer risk more than estrogen-alone supplementation; and that the fraction's safety for the reproductive track warrants a more detailed evaluation.
Collapse
Affiliation(s)
- Job Tchoumtchoua
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, Athens, Greece; Division of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, Panepistimioupoli Zografou, 15771 Athens, Greece; Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde 1, P.O. Box 812, Yaounde, Cameroon
| | - Maria Makropoulou
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, Athens, Greece; Division of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, Panepistimioupoli Zografou, 15771 Athens, Greece
| | - Sylvain Benjamin Ateba
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde 1, P.O. Box 812, Yaounde, Cameroon
| | - Athina Boulaka
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, Athens, Greece
| | - Maria Halabalaki
- Division of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, Panepistimioupoli Zografou, 15771 Athens, Greece
| | - George Lambrinidis
- Division of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Athens, Panepistimioupoli Zografou, 15771 Athens, Greece
| | - Aggeliki K Meligova
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, Athens, Greece
| | - Jean Claude Mbanya
- Department of Internal Medicine and Specialties, Faculty of Medicine and Biomedical Sciences, University of Yaounde 1, P.O. Box 8046, Yaounde, Cameroon
| | - Emmanuel Mikros
- Division of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Athens, Panepistimioupoli Zografou, 15771 Athens, Greece
| | - Alexios-Leandros Skaltsounis
- Division of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, Panepistimioupoli Zografou, 15771 Athens, Greece
| | - Dimitra J Mitsiou
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, Athens, Greece
| | - Dieudonne Njamen
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaounde 1, P.O. Box 812, Yaounde, Cameroon
| | - Michael N Alexis
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, Athens, Greece.
| |
Collapse
|
11
|
Clewell RA, McMullen PD, Adeleye Y, Carmichael PL, Andersen ME. Pathway Based Toxicology and Fit-for-Purpose Assays. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 856:205-230. [DOI: 10.1007/978-3-319-33826-2_8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
12
|
Jen SH, Wei MPS, Yin ACY. The Combinatory Effects of Glabridin and Tamoxifen on Ishikawa and MCF-7 Cell Lines. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000922] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Estrogen replacement therapy is commonly used to replace the loss of estrogen in post-menopausal women. However, it is not suitable to be used in women taking tamoxifen as both of the drugs increase the risk of endometrial cancer. This project aimed to study the potential of using the natural compound glabridin in combination with tamoxifen as a drug for estrogen replacement therapy. Ishikawa and MCF-7 cells were used to investigate the estrogenic activities stimulated by the combination of tamoxifen and glabridin through ALP and MTT assays. The expressions of the ESR1 and bcl-2 genes have also been determined using RT-PCR. The results indicated that the combination of 1×10−5M tamoxifen and 1×10−6M glabridin exhibited estrogenic activities and suppressed cell growth in both cell lines. The relative expressions of ESR1 and bcl-2 genes indicated that the estrogenicity expressed by the combinatory drug was regulated by estrogen receptor α; however, the reduction in cell proliferation was not modulated by bcl-2 anti-apoptotic proteins. These results suggested that the combination of tamoxifen and glabridin has potential to be used as an estrogen replacement drug with a reduced risk of endometrial cancer that has arisen from the intake of tamoxifen.
Collapse
Affiliation(s)
- Soe Hui Jen
- School of Biosciences, Taylor's University Lakeside Campus, Jalan Taylor's, 47500 Subang Jaya, Selangor, Malaysia
| | - Melissa Poh Su Wei
- School of Biosciences, Taylor's University Lakeside Campus, Jalan Taylor's, 47500 Subang Jaya, Selangor, Malaysia
| | - Adeline Chia Yoke Yin
- School of Biosciences, Taylor's University Lakeside Campus, Jalan Taylor's, 47500 Subang Jaya, Selangor, Malaysia
| |
Collapse
|
13
|
Lutter S, Schmalbach K, Esch HL, Lehmann L. The isoflavone irilone contributes to the estrogenic potential of dietary supplements containing red clover. Arch Toxicol 2013; 88:309-21. [PMID: 23982890 DOI: 10.1007/s00204-013-1114-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Accepted: 08/01/2013] [Indexed: 12/26/2022]
Abstract
A recent intervention study demonstrated the occurrence of irilone as second most abundant isoflavone next to daidzein in human plasma after consumption of a red clover-based dietary supplement (RCDS) containing predominately formononetin ≫ biochanin A > irilone (12 % of these isoflavones). To elucidate the relevance of this finding, in the present study (1) the representativeness of the isoflavone composition of the RCDS and (2) the estrogenic activity of irilone were investigated. Thus, major isoflavones were quantified in eight commercially available RCDS. Furthermore, the estrogenic activities of irilone and other isoflavones were determined by marker gene expression in Ishikawa and cell proliferation in MCF-7 cells. Irilone amounted to 1.8-10.9 mg/g capsule content and 5-18 % of the three major isoflavones, respectively, demonstrating the general occurrence of irilone in RCDS. Moreover, irilone significantly induced the activity of alkaline phosphatase (AlP) as well as AlP, progesterone receptor, and androgen receptor mRNA levels in Ishikawa cells. Furthermore, irilone significantly induced MCF-7 cell proliferation. Neither 17β-estradiol (E2)-induced AlP activity nor E2-induced MCF-7 cell proliferation was affected by irilone. ICI182,780 antagonized IRI-induced effects on both AlP activity and cell proliferation, suggesting an estrogen receptor agonistic mode of action. Taking into account the estrogenic activity of red clover isoflavones (formononetin, biochanin A, prunetin, glycitein) and their biotransformation products (daidzein, genistein, ethylphenol) as well as published plasma levels of isoflavones after consumption of RCDS, irilone could contribute approximately 50 % of the E2 equivalents estimated for daidzein.
Collapse
Affiliation(s)
- Stefanie Lutter
- Institute of Pharmacy and Food Chemistry, Chair of Food Chemistry, University of Wuerzburg, Am Hubland, 97074, Würzburg, Germany
| | | | | | | |
Collapse
|
14
|
Chen L, Chang WC, Hung YC, Chang YY, Bao BY, Huang HC, Chung WM, Shyr CR, Ma WL. Androgen receptor increases CD133 expression and progenitor-like population that associate with cisplatin resistance in endometrial cancer cell line. Reprod Sci 2013; 21:386-94. [PMID: 23962788 DOI: 10.1177/1933719113497281] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Endometrial cancer (EMC) is a sex steroid hormone-related female malignancy. Androgen and androgen receptor (androgen/AR) signals have been implicated in EMC progression. Cancer stem/progenitor cells (CSPCs) are suspected to link to chemoresistance in patients with EMC. In this study, we examined the androgen/AR roles in cisplatin resistance and CSPC population. We found AR expression increased naive EMC side population, CSPC population, cell migration, and epithelial-mesenchymal transition. Meanwhile, it decreased cisplatin cytotoxic effect on EMC cells. Collaterally, endogenous AR expressions in EMC cells were upregulated in the cisplatin-resisting state. Moreover, AR expression could further enhance CD133 expression, CSPC-related markers, and drug-resistance gene messenger RNA expression in EMC cells. Finally, the AR-associated gene expression might go through indirect regulation. This is the first report revealing AR function on EMC cells' CSPC and cisplatin resistance.
Collapse
Affiliation(s)
- Lumin Chen
- 1Sex Hormone Research Center, Graduate Institution of Clinical Medical Science, School of Medicine, China Medical University, Taichung, Taiwan
| | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Tamm-Rosenstein K, Simm J, Suhorutshenko M, Salumets A, Metsis M. Changes in the transcriptome of the human endometrial Ishikawa cancer cell line induced by estrogen, progesterone, tamoxifen, and mifepristone (RU486) as detected by RNA-sequencing. PLoS One 2013; 8:e68907. [PMID: 23874806 PMCID: PMC3712916 DOI: 10.1371/journal.pone.0068907] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 06/07/2013] [Indexed: 01/05/2023] Open
Abstract
Background Estrogen (E2) and progesterone (P4) are key players in the maturation of the human endometrium. The corresponding steroid hormone modulators, tamoxifen (TAM) and mifepristone (RU486) are widely used in breast cancer therapy and for contraception purposes, respectively. Methodology/Principal findings Gene expression profiling of the human endometrial Ishikawa cancer cell line treated with E2 and P4 for 3 h and 12 h, and TAM and RU486 for 12 h, was performed using RNA-sequencing. High levels of mRNA were detected for genes, including PSAP, ATP5G2, ATP5H, and GNB2L1 following E2 or P4 treatment. A total of 82 biomarkers for endometrial biology were identified among E2 induced genes, and 93 among P4 responsive genes. Identified biomarkers included: EZH2, MDK, MUC1, SLIT2, and IL6ST, which are genes previously associated with endometrial receptivity. Moreover, 98.8% and 98.6% of E2 and P4 responsive genes in Ishikawa cells, respectively, were also detected in two human mid-secretory endometrial biopsy samples. TAM treatment exhibited both antagonistic and agonistic effects of E2, and also regulated a subset of genes independently. The cell cycle regulator cyclin D1 (CCND1) showed significant up-regulation following treatment with TAM. RU486 did not appear to act as a pure antagonist of P4 and a functional analysis of RU486 response identified genes related to adhesion and apoptosis, including down-regulated genes associated with cell-cell contacts and adhesion as CTNND1, JUP, CDH2, IQGAP1, and COL2A1. Conclusions Significant changes in gene expression by the Ishikawa cell line were detected after treatments with E2, P4, TAM, and RU486. These transcriptome data provide valuable insight into potential biomarkers related to endometrial receptivity, and also facilitate an understanding of the molecular changes that take place in the endometrium in the early stages of breast cancer treatment and contraception usage.
Collapse
Affiliation(s)
- Karin Tamm-Rosenstein
- Centre for Biology of Integrated Systems, Tallinn University of Technology, Tallinn, Estonia.
| | | | | | | | | |
Collapse
|
16
|
Ester and carbamate ester derivatives of Biochanin A: Synthesis and in vitro evaluation of estrogenic and antiproliferative activities. Bioorg Med Chem 2012; 20:2962-70. [DOI: 10.1016/j.bmc.2012.03.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 03/01/2012] [Accepted: 03/03/2012] [Indexed: 11/19/2022]
|
17
|
Schröpfer A, Kammerer U, Kapp M, Dietl J, Feix S, Anacker J. Expression pattern of matrix metalloproteinases in human gynecological cancer cell lines. BMC Cancer 2010; 10:553. [PMID: 20942921 PMCID: PMC2964638 DOI: 10.1186/1471-2407-10-553] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Accepted: 10/13/2010] [Indexed: 02/22/2023] Open
Abstract
Background Matrix metalloproteinases (MMPs) are involved in the degradation of protein components of the extracellular matrix and thus play an important role in tumor invasion and metastasis. Their expression is related to the progression of gynecological cancers (e.g. endometrial, cervical or ovarian carcinoma). In this study we investigated the expression pattern of the 23 MMPs, currently known in humans, in different gynecological cancer cell lines. Methods In total, cell lines from three endometrium carcinomas (Ishikawa, HEC-1-A, AN3 CA), three cervical carcinomas (HeLa, Caski, SiHa), three chorioncarcinomas (JEG, JAR, BeWo), two ovarian cancers (BG-1, OAW-42) and one teratocarcinoma (PA-1) were examined. The expression of MMPs was analyzed by RT-PCR, Western blot and gelatin zymography. Results We demonstrated that the cell lines examined can constitutively express a wide variety of MMPs on mRNA and protein level. While MMP-2, -11, -14 and -24 were widely expressed, no expression was seen for MMP-12, -16, -20, -25, -26, -27 in any of the cell lines. A broad range of 16 MMPs could be found in the PA1 cells and thus this cell line could be used as a positive control for general MMP experiments. While the three cervical cancer cell lines expressed 10-14 different MMPs, the median expression in endometrial and choriocarcinoma cells was 7 different enzymes. The two investigated ovarian cancer cell lines showed a distinctive difference in the number of expressed MMPs (2 vs. 10). Conclusions Ishikawa, Caski, OAW-42 and BeWo cell lines could be the best choice for all future experiments on MMP regulation and their role in endometrial, cervical, ovarian or choriocarcinoma development, whereas the teratocarcinoma cell line PA1 could be used as a positive control for general MMP experiments.
Collapse
Affiliation(s)
- Andrea Schröpfer
- Department of Obstetrics and Gynecology, University of Wuerzburg, Josef-Schneider Str 4, 97080 Wuerzburg, Germany
| | | | | | | | | | | |
Collapse
|
18
|
Calogeropoulou T, Avlonitis N, Minas V, Alexi X, Pantzou A, Charalampopoulos I, Zervou M, Vergou V, Katsanou ES, Lazaridis I, Alexis MN, Gravanis A. Novel dehydroepiandrosterone derivatives with antiapoptotic, neuroprotective activity. J Med Chem 2009; 52:6569-87. [PMID: 19845386 DOI: 10.1021/jm900468p] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
DHEA analogues with modifications at positions C3 or C17 were synthesized and evaluated for neuroprotective activity against the neural-crest-derived PC12 cell model of serum deprivation-induced apoptosis. The most potent compounds were the spiro-epoxy derivatives 17beta-spiro[5-androstene-17,2'-oxiran]-3beta-ol (20), (20S)-3beta,21-dihydroxy-17beta,20-epoxy-5-pregnene (23), and (20R)-3beta,21-dihydroxy-17alpha,20-epoxy-5-pregnene (27) with IC(50) values of 0.19 +/- 0.01, 99.0 +/- 4.6, and 6.4 +/- 0.3 nM, respectively. Analogues 20, 23, and 27, up to the micromolar range of concentrations, were unable to activate estrogen receptor alpha and beta (ERalpha and ERbeta) or to interfere with ER-dependent gene expression significantly. In addition, they were unable to stimulate the growth of Ishikawa, MCF-7, and LNCaP cells. Our results suggest that the spiro-epoxyneurosteroid derivatives 20, 23, and 27 may prove to be lead molecules for the synthesis of novel neuroprotective agents.
Collapse
Affiliation(s)
- Theodora Calogeropoulou
- Institute of Organic and Pharmaceutical Chemistry, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue 11635, Athens, Greece.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Alexi X, Kasiotis KM, Fokialakis N, Lambrinidis G, Meligova AK, Mikros E, Haroutounian SA, Alexis MN. Differential estrogen receptor subtype modulators: assessment of estrogen receptor subtype-binding selectivity and transcription-regulating properties of new cycloalkyl pyrazoles. J Steroid Biochem Mol Biol 2009; 117:159-67. [PMID: 19772920 DOI: 10.1016/j.jsbmb.2009.09.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2009] [Revised: 09/07/2009] [Accepted: 09/11/2009] [Indexed: 02/07/2023]
Abstract
Several new cycloalkyl-fused diaryl pyrazoles were synthesized and their binding affinity for the estrogen receptor (ER) subtypes, ERalpha and ERbeta, and subtype-specific agonist/antagonist properties were determined. Cyclopentane- and cyclohexane-fused pyrazoles with p-hydroxyphenyl rings at positions 1 and 3 displayed modest ERbeta-binding selectivity and variable agonism through ERalpha, while behaving as full estrogen antagonists through ERbeta in estrogen-responsive element (ERE)-dependent gene expression assays. By contrast, the 2,3-diphenolic derivatives were non-selective and considerably less effective ERbeta antagonists compared to 1,3-diphenolic ones. The cyclohexane-fused 1,3-diphenolic pyrazole 8, in particular, behaved as full ERalpha agonist/ERbeta antagonist in these assays. Molecular modelling revealed the structural determinants possibly accounting for the differential regulation of transcription through the two ERs exhibited by 8. The data also shows that the ER subtype-binding selectivity and agonist/antagonist efficacy of the 1,3-diphenolic pyrazoles is influenced by the cycloalkyl ring fused to the pyrazole core. Using 8 we show that, though the mutant androgen receptor (AR) of LNCaP cells is required for estrogen as well as androgen stimulation of cell growth, estrogen responsiveness of the cells depends on ERbeta and AR but not on ERalpha.
Collapse
Affiliation(s)
- Xanthippi Alexi
- Molecular Endocrinology Program, Institute of Biological Research and Biotechnology, National Hellenic Research Foundation, Athens, Greece
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Wu X, Hawse JR, Subramaniam M, Goetz MP, Ingle JN, Spelsberg TC. The tamoxifen metabolite, endoxifen, is a potent antiestrogen that targets estrogen receptor alpha for degradation in breast cancer cells. Cancer Res 2009; 69:1722-7. [PMID: 19244106 DOI: 10.1158/0008-5472.can-08-3933] [Citation(s) in RCA: 170] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Tamoxifen has been the most important therapeutic agent for the treatment of estrogen receptor (ER)-positive breast cancer for the past three decades. Tamoxifen is extensively metabolized by cytochrome P450 enzymes, and recent in vivo studies have shown that women with genetically impaired cytochrome P450 2D6 have reduced production of endoxifen and a higher risk of breast cancer recurrence. Despite these observations, the contribution of endoxifen to the overall drug effectiveness of tamoxifen remains uncertain. Here, we provide novel evidence that endoxifen is a potent antiestrogen that functions in part by targeting ERalpha for degradation by the proteasome in breast cancer cells. Additionally, we show that endoxifen blocks ERalpha transcriptional activity and inhibits estrogen-induced breast cancer cell proliferation even in the presence of tamoxifen, N-desmethyl-tamoxifen, and 4-hydroxytamoxifen. All of the effects of endoxifen are concentration dependent and do not occur at concentrations observed in human CYP2D6 poor metabolizers. These results support the theory that endoxifen is the primary metabolite responsible for the overall effectiveness of tamoxifen in the treatment of ER-positive breast cancer.
Collapse
Affiliation(s)
- Xianglin Wu
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota 55905, USA
| | | | | | | | | | | |
Collapse
|
21
|
Naciff JM, Khambatta ZS, Thomason RG, Carr GJ, Tiesman JP, Singleton DW, Khan SA, Daston GP. The genomic response of a human uterine endometrial adenocarcinoma cell line to 17alpha-ethynyl estradiol. Toxicol Sci 2008; 107:40-55. [PMID: 18936297 DOI: 10.1093/toxsci/kfn219] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We have determined the gene expression profile induced by 17 alpha-ethynyl estradiol (EE) in Ishikawa cells, a human uterine-derived estrogen-sensitive cell line, at various doses (1 pM, 100 pM, 10 nM, and 1 microM) and time points (8, 24, and 48 h). The transcript profiles were compared between treatment groups and controls (vehicle-treated) using high-density oligonucleotide arrays to determine the expression level of approximately 38,500 human genes. By trend analysis, we determined that the expression of 2560 genes was modified by exposure to EE in a dose- and time-dependent manner (p </= 0.0001). The annotation available for the genes affected indicates that EE exposure results in changes in multiple molecular pathways affecting various biological processes, particularly associated with development, morphogenesis, organogenesis, cell proliferation, cell organization, and biogenesis. All of these processes are also affected by estrogen exposure in the uterus of the rat. Comparison of the response to EE in both the rat uterus and the Ishikawa cells showed that 71 genes are regulated in a similar manner in vivo as well as in vitro. Further, some of the genes that show a robust response to estrogen exposure in Ishikawa cells are well known to be estrogen responsive, in various in vivo studies, such as PGR, MMP7, IGFBP3, IGFBP5, SOX4, MYC, EGR1, FOS, CKB, and CCND2, among others. These results indicate that transcript profiling can serve as a viable tool to select reliable in vitro systems to evaluate potential estrogenic activities of target chemicals and to identify genes that are relevant for the estrogen response.
Collapse
Affiliation(s)
- Jorge M Naciff
- Miami Valley Innovation Center, The Procter and Gamble Company, Cincinnati, Ohio 45253, USA
| | | | | | | | | | | | | | | |
Collapse
|