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Ben Hassen C, Goupille C, Vigor C, Durand T, Guéraud F, Silvente-Poirot S, Poirot M, Frank PG. Is cholesterol a risk factor for breast cancer incidence and outcome? J Steroid Biochem Mol Biol 2023; 232:106346. [PMID: 37321513 DOI: 10.1016/j.jsbmb.2023.106346] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 06/04/2023] [Accepted: 06/05/2023] [Indexed: 06/17/2023]
Abstract
Cholesterol plays important roles in many physiological processes, including cell membrane structure and function, hormone synthesis, and the regulation of cellular homeostasis. The role of cholesterol in breast cancer is complex, and some studies have suggested that elevated cholesterol levels may be associated with an increased risk of developing breast cancer, while others have found no significant association. On the other hand, other studies have shown that, for total cholesterol and plasma HDL-associated cholesterol levels, there was inverse association with breast cancer risk. One possible mechanism by which cholesterol may contribute to breast cancer risk is as a key precursor of estrogen. Other potential mechanisms by which cholesterol may contribute to breast cancer risk include its role in inflammation and oxidative stress, which have been linked to cancer progression. Cholesterol has also been shown to play a role in signaling pathways regulating the growth and proliferation of cancer cells. In addition, recent studies have shown that cholesterol metabolism can generate tumor promoters such as cholesteryl esters, oncosterone, 27-hydroxycholesterol but also tumor suppressor metabolites such as dendrogenin A. This review summarizes some of the most important clinical studies that have evaluated the role of cholesterol or its derivatives in breast cancer. It also addresses the role of cholesterol and its derivatives at the cellular level.
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Affiliation(s)
| | - Caroline Goupille
- INSERM N2C UMR1069, University of Tours, 37032 Tours, France; Department of Gynecology, CHRU Hôpital Bretonneau, boulevard Tonnellé, 37044 Tours, France
| | - Claire Vigor
- Institut des Biomolécules Max Mousseron, IBMM, Pôle Chimie Balard Recherche, Université de Montpellier, CNRS, ENSCM, 34293 CEDEX 5 Montpellier, France
| | - Thierry Durand
- Institut des Biomolécules Max Mousseron, IBMM, Pôle Chimie Balard Recherche, Université de Montpellier, CNRS, ENSCM, 34293 CEDEX 5 Montpellier, France
| | - Françoise Guéraud
- INRAE, Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRAE, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Sandrine Silvente-Poirot
- Cancer Research Center of Toulouse (CRCT), Inserm, CNRS, University of Toulouse, Team INOV:"Cholesterol Metabolism and Therapeutic Innovations", Toulouse, France; Equipe labellisée par la Ligue Nationale contre le Cancer, France
| | - Marc Poirot
- Cancer Research Center of Toulouse (CRCT), Inserm, CNRS, University of Toulouse, Team INOV:"Cholesterol Metabolism and Therapeutic Innovations", Toulouse, France; Equipe labellisée par la Ligue Nationale contre le Cancer, France
| | - Philippe G Frank
- INSERM N2C UMR1069, University of Tours, 37032 Tours, France; SGS Health and Nutrition, Saint Benoît, France.
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2
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Decker NS, Johnson T, Behrens S, Obi N, Kaaks R, Chang-Claude J, Fortner RT. Endogenous estrogen receptor modulating oxysterols and breast cancer prognosis: Results from the MARIE patient cohort. Br J Cancer 2023; 129:492-502. [PMID: 37355720 PMCID: PMC10403581 DOI: 10.1038/s41416-023-02315-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 05/15/2023] [Accepted: 06/08/2023] [Indexed: 06/26/2023] Open
Abstract
BACKGROUND 27-hydroxycholesterol (HC) and 25-HC were identified as endogenous selective estrogen receptor modulators (SERMs) and estrogen receptor (ER) modulators, respectively. They are hypothesized to play a role in multiple physiologic processes and pathologies, including breast cancer development and progression. METHODS We evaluated circulating 27-HC and 25-HC, and outcomes following a breast cancer diagnosis in 2282 women from the MARIE study over median follow-up of 11.6 years. 27-HC and 25-HC were quantified by liquid chromatography-mass spectrometry. We calculated hazard ratios (HR) and 95% confidence intervals [CI] using multivariable Cox Proportional Hazards regression. RESULTS We observed no associations between 27-HC and breast cancer prognosis overall. Associations between 27-HC and survival differed by circulating estradiol concentrations and endocrine therapy, but not by hormone receptor status. Among women with estradiol levels below the median (0.08 nM), 27-HC was associated with higher risk of all-cause mortality (HRlog2 = 1.80 [1.20-2.71]) and breast cancer-specific mortality (HRlog2 = 1.95 [1.14-3.31]). No associations were observed in women with estradiol levels above the median. Higher 25-HC levels were associated with lower risk of recurrence (HRlog2 = 0.87 [0.77-0.98]). CONCLUSION Associations between 27-HC and breast cancer prognosis varied by circulating estradiol levels and endocrine therapy. Less consistent results were observed for 25-HC.
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Affiliation(s)
- Nina Sophia Decker
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
- Medical Faculty Heidelberg, Heidelberg University, Heidelberg, Germany
| | - Theron Johnson
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Sabine Behrens
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Nadia Obi
- Institute for Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - Rudolf Kaaks
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Jenny Chang-Claude
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
- University Cancer Center Hamburg, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - Renée Turzanski Fortner
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany.
- Department of Research, Cancer Registry of Norway, Ullernchausseen 64, 0379, Oslo, Norway.
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3
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Corbet AK, Bikorimana E, Boyd RI, Shokry D, Kries K, Gupta A, Paton A, Sun Z, Fazal Z, Freemantle SJ, Nelson ER, Spinella MJ, Singh R. G0S2 promotes antiestrogenic and pro-migratory responses in ER+ and ER- breast cancer cells. Transl Oncol 2023; 33:101676. [PMID: 37086619 DOI: 10.1016/j.tranon.2023.101676] [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: 12/22/2022] [Revised: 04/12/2023] [Accepted: 04/14/2023] [Indexed: 04/24/2023] Open
Abstract
G0/G1 switch gene 2 (G0S2) is known to inhibit lipolysis by inhibiting adipose triglyceride lipase (ATGL). In this report, we dissect the role of G0S2 in ER+ versus ER- breast cancer. Overexpression of G0S2 in ER- cells increased cell proliferation, while G0S2 overexpression in ER+ cells decreased cell proliferation. Transcriptome analysis revealed that G0S2 mediated distinct but overlapping transcriptional responses in ER- and ER+ cells. G0S2 reduced genes associated with an epithelial phenotype, especially in ER- cells, including CDH1, ELF3, STEAP4 and TACSTD2, suggesting promotion of the epithelial-mesenchymal transition (EMT). G0S2 also repressed estrogen signaling and estrogen receptor target gene signatures, especially in ER+ cells, including TFF1 and TFF3. In addition, G0S2 overexpression increased cell migration in ER- cells and increased estrogen deprivation sensitivity in ER+ cells. Interestingly, two genes downstream of ATGL in fat utilization and very important in steroid hormone biosynthesis, HMGCS1 and HMGCS2, were downregulated in G0S2 overexpressing ER+ cells. In addition, HSD17B11, a gene that converts estradiol to its less estrogenic derivative, estrone, was highly upregulated in G0S2 overexpressing ER+ cells, suggesting G0S2 overexpression has a negative effect on estradiol production and maintenance. High expression of G0S2 and HSD17B11 was associated with improved relapse-free survival in breast cancer patients while high expression of HMGSC1 was associated with poor survival. Finally, we deleted G0S2 in breast cancer-prone MMTV-PyMT mice. Our data indicates a complex role for G0S2 in breast cancer, dependent on ER status, that may be partially mediated by suppression of the estrogen signaling pathway.
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Affiliation(s)
- Andrea K Corbet
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Emmanuel Bikorimana
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Raya I Boyd
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Doha Shokry
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Kelly Kries
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Ayush Gupta
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Anneliese Paton
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Zhengyang Sun
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Zeeshan Fazal
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Sarah J Freemantle
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Erik R Nelson
- Department of Molecular and Integrative Physiology, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA; Carle Illinois College of Medicine University of Illinois Urbana-Champaign, Urbana IL 61801, USA; Carl R. Woese Institute for Genomic Biology, Anticancer Discovery from Pets to People Theme, University of Illinois Urbana-Champaign, Urbana IL 61801, USA; Cancer Center of Illinois, University of Illinois Urbana-Champaign, Urbana IL 61801, USA
| | - Michael J Spinella
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA; Carle Illinois College of Medicine University of Illinois Urbana-Champaign, Urbana IL 61801, USA; Carl R. Woese Institute for Genomic Biology, Anticancer Discovery from Pets to People Theme, University of Illinois Urbana-Champaign, Urbana IL 61801, USA; Cancer Center of Illinois, University of Illinois Urbana-Champaign, Urbana IL 61801, USA.
| | - Ratnakar Singh
- Department of Comparative Biosciences, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.
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Ejam SS, Saleh RO, Catalan Opulencia MJ, Najm MA, Makhmudova A, Jalil AT, Abdelbasset WK, Al-Gazally ME, Hammid AT, Mustafa YF, Sergeevna SE, Karampoor S, Mirzaei R. Pathogenic role of 25-hydroxycholesterol in cancer development and progression. Future Oncol 2022; 18:4415-4442. [PMID: 36651359 DOI: 10.2217/fon-2022-0819] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Cholesterol is an essential lipid that serves several important functions, including maintaining the homeostasis of cells, acting as a precursor to bile acid and steroid hormones and preserving the stability of membrane lipid rafts. 25-hydroxycholesterol (25-HC) is a cholesterol derivative that may be formed from cholesterol. 25-HC is a crucial component in various biological activities, including cholesterol metabolism. In recent years, growing evidence has shown that 25-HC performs a critical function in the etiology of cancer, infectious diseases and autoimmune disorders. This review will summarize the latest findings regarding 25-HC, including its biogenesis, immunomodulatory properties and role in innate/adaptive immunity, inflammation and the development of various types of cancer.
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Affiliation(s)
| | - Raed Obaid Saleh
- Department of Pharmacy, Al-Maarif University College, Al-Anbar, Iraq
| | | | - Mazin Aa Najm
- Pharmaceutical Chemistry Department, College of Pharmacy, Al-Ayen University, Thi-Qar, Iraq
| | - Aziza Makhmudova
- Department of Social Sciences & Humanities, Samarkand State Medical Institute, Samarkand, Uzbekistan
- Department of Scientific Affairs, Tashkent State Dental Institute, Makhtumkuli Street 103, Tashkent, 100047, Uzbekistan
| | - Abduladheem Turki Jalil
- Medical Laboratories Techniques Department, Al-Mustaqbal University College, Babylon, Hilla, 51001, Iraq
| | - Walid Kamal Abdelbasset
- Department of Health & Rehabilitation Sciences, College of Applied Medical Sciences, Prince Sattam bin Abdulaziz University, Al Kharj, Saudi Arabia
- Department of Physical Therapy, Kasr Al-Aini Hospital, Cairo University, Giza, Egypt
| | | | - Ali Thaeer Hammid
- Computer Engineering Techniques Department, Faculty of Information Technology, Imam Ja'afar Al-Sadiq University, Baghdad, Iraq
| | - Yasser Fakri Mustafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Mosul, Mosul, 41001, Iraq
| | - Sergushina Elena Sergeevna
- National Research Ogarev Mordovia State University, 68 Bolshevitskaya Street, Republic of Mordovia, Saransk, 430005, Russia
| | - Sajad Karampoor
- Gastrointestinal & Liver Diseases Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Rasoul Mirzaei
- Venom & Biotherapeutics Molecules Lab, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
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5
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The emerging role of 27-hydroxycholesterol in cancer development and progression: An update. Int Immunopharmacol 2022; 110:109074. [DOI: 10.1016/j.intimp.2022.109074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/09/2022] [Accepted: 07/17/2022] [Indexed: 02/07/2023]
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6
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Ma L, Cho W, Nelson ER. Our evolving understanding of how 27-hydroxycholesterol influences cancer. Biochem Pharmacol 2022; 196:114621. [PMID: 34043965 PMCID: PMC8611110 DOI: 10.1016/j.bcp.2021.114621] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/19/2021] [Accepted: 05/20/2021] [Indexed: 02/09/2023]
Abstract
Cholesterol has been implicated in the pathophysiology and progression of several cancers now, although the mechanisms by which it influences cancer biology are just emerging. Two likely contributing mechanisms are the ability for cholesterol to directly regulate signaling molecules within the membrane, and certain metabolites acting as signaling molecules. One such metabolite is the oxysterol 27-hydroxycholesterol (27HC), which is a primary metabolite of cholesterol synthesized by the enzyme Cytochrome P450 27A1 (CYP27A1). Physiologically, 27HC is involved in the regulation of cholesterol homeostasis and contributes to cholesterol efflux through liver X receptor (LXR) and inhibition of de novo cholesterol synthesis through the insulin-induced proteins (INSIGs). 27HC is also a selective modulator of the estrogen receptors. An increasing number of studies have identified its importance in cancer progression of various origins, especially in breast cancer. In this review, we discuss the physiological roles of 27HC targeting these two nuclear receptors and the subsequent contribution to cancer progression. We describe how 27HC promotes tumor growth directly through cancer-intrinsic factors, and indirectly through its immunomodulatory roles which lead to decreased immune surveillance and increased tumor invasion. This review underscores the importance of the cholesterol metabolic pathway in cancer progression and the potential therapeutic utility of targeting this metabolic pathway.
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Affiliation(s)
- Liqian Ma
- Department of Molecular and Integrative Physiology, University of Illinois Urbana-Champaign, Urbana, IL
| | - Wonhwa Cho
- Department of Chemistry, University of Illinois at Chicago, Chicago, IL
| | - Erik R. Nelson
- Department of Molecular and Integrative Physiology, University of Illinois Urbana-Champaign, Urbana, IL,Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, IL,Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, IL,University of Illinois Cancer Center, University of Illinois at Chicago, Chicago, IL,Carl R. Woese Institute for Genomic Biology, Anticancer Discovery from Pets to People Theme, University of Illinois Urbana-Champaign, Urbana, IL,To whom correspondence and reprint requests should be addressed: Erik R. Nelson. University of Illinois at Urbana-Champaign. 407 S Goodwin Ave (MC-114), Urbana, IL, 61801. Phone: 217-244-5477. Fax: 217-333-1133.
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7
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Scully T, Ettela A, LeRoith D, Gallagher EJ. Obesity, Type 2 Diabetes, and Cancer Risk. Front Oncol 2021; 10:615375. [PMID: 33604295 PMCID: PMC7884814 DOI: 10.3389/fonc.2020.615375] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 12/09/2020] [Indexed: 12/12/2022] Open
Abstract
Obesity and type 2 diabetes have both been associated with increased cancer risk and are becoming increasingly prevalent. Metabolic abnormalities such as insulin resistance and dyslipidemia are associated with both obesity and type 2 diabetes and have been implicated in the obesity-cancer relationship. Multiple mechanisms have been proposed to link obesity and diabetes with cancer progression, including an increase in insulin/IGF-1 signaling, lipid and glucose uptake and metabolism, alterations in the profile of cytokines, chemokines, and adipokines, as well as changes in the adipose tissue directly adjacent to the cancer sites. This review aims to summarize and provide an update on the epidemiological and mechanistic evidence linking obesity and type 2 diabetes with cancer, focusing on the roles of insulin, lipids, and adipose tissue.
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Affiliation(s)
- Tiffany Scully
- Division of Endocrinology, Diabetes and Bone Disease, Icahn School of Medicine at Mount Sinai, New York City, NY, United States
| | - Abora Ettela
- Division of Endocrinology, Diabetes and Bone Disease, Icahn School of Medicine at Mount Sinai, New York City, NY, United States
| | - Derek LeRoith
- Division of Endocrinology, Diabetes and Bone Disease, Icahn School of Medicine at Mount Sinai, New York City, NY, United States.,Tisch Cancer Institute at Mount Sinai, Icahn School of Medicine at Mount Sinai, New York City, NY, United States
| | - Emily Jane Gallagher
- Division of Endocrinology, Diabetes and Bone Disease, Icahn School of Medicine at Mount Sinai, New York City, NY, United States.,Tisch Cancer Institute at Mount Sinai, Icahn School of Medicine at Mount Sinai, New York City, NY, United States
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8
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Kloudova-Spalenkova A, Holy P, Soucek P. Oxysterols in cancer management: From therapy to biomarkers. Br J Pharmacol 2020; 178:3235-3247. [PMID: 32986851 DOI: 10.1111/bph.15273] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/03/2020] [Accepted: 09/11/2020] [Indexed: 12/20/2022] Open
Abstract
Oxysterols are oxidized derivatives of cholesterol, both endogenous and exogenous. They have been implicated in numerous pathologies, including cancer. In addition to their roles in carcinogenesis, proliferation, migration, apoptosis, and multiple signalling pathways, they have been shown to modulate cancer therapy. They are known to affect therapy of hormonally positive breast cancer through modulating oestrogen receptor activity. Oxysterols have also been shown in various in vitro models to influence efficacy of chemotherapeutics, such as doxorubicin, vincristine, cisplatin, 5-fluorouracil, and others. Their effects on the immune system should also be considered in immunotherapy. Selective anti-cancer cytotoxic properties of some oxysterols make them candidates for new therapeutic molecules. Finally, differences in oxysterol levels in blood of cancer patients in different stages or versus healthy controls, and in tumour versus non-tumour tissues, show potential of oxysterols as biomarkers for cancer management and patient stratification for optimization of therapy. LINKED ARTICLES: This article is part of a themed issue on Oxysterols, Lifelong Health and Therapeutics. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v178.16/issuetoc.
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Affiliation(s)
- Alzbeta Kloudova-Spalenkova
- Department of Toxicogenomics, National Institute of Public Health, Prague, Czech Republic.,Third Faculty of Medicine, Charles University, Prague, Czech Republic.,Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Petr Holy
- Department of Toxicogenomics, National Institute of Public Health, Prague, Czech Republic.,Third Faculty of Medicine, Charles University, Prague, Czech Republic.,Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
| | - Pavel Soucek
- Department of Toxicogenomics, National Institute of Public Health, Prague, Czech Republic.,Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czech Republic
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9
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Le Cornet C, Walter B, Sookthai D, Johnson TS, Kühn T, Herpel E, Kaaks R, Fortner RT. Circulating 27-hydroxycholesterol and breast cancer tissue expression of CYP27A1, CYP7B1, LXR-β, and ERβ: results from the EPIC-Heidelberg cohort. Breast Cancer Res 2020; 22:23. [PMID: 32075687 PMCID: PMC7031866 DOI: 10.1186/s13058-020-1253-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 01/22/2020] [Indexed: 02/07/2023] Open
Abstract
Background Experimental and epidemiological studies demonstrate a role for 27-hydroxycholesterol (27HC) in breast cancer development, though results are conflicting. Cholesterol 27-hydroxylase (CYP27A1) and oxysterol 7-alpha-hydroxylase (CYP7B1) regulate 27HC concentrations, while differential expression of the liver X receptor (LXR) and estrogen receptor beta (ERβ) may impact the association between 27HC and breast cancer risk. Methods We evaluated correlates of tumor tissue expression of CYP27A1, CYP7B1, LXR-β, and ERβ and the association between circulating prediagnostic 27HC concentrations and breast cancer risk by marker expression in a nested case-control study within the European Prospective Investigation into Cancer and Nutrition (EPIC)-Heidelberg cohort including 287 breast cancer cases with tumor tissue available. Tumor protein expression was evaluated using immunohistochemistry, and serum 27HC concentrations quantified using liquid chromatography–mass spectrometry. Conditional logistic regression models were used to estimate odds ratios (ORs) and 95% confidence intervals (CIs). Results A higher proportion of CYP7B1-positive cases were progesterone receptor (PR)-positive, relative to CYP7B1-negative cases, whereas a higher proportion of ERβ-positive cases were Bcl-2 low, relative to ERβ-negative cases. No differences in tumor tissue marker positivity were observed by reproductive and lifestyle factors. We observed limited evidence of heterogeneity in associations between circulating 27HC and breast cancer risk by tumor tissue expression of CYP27A1, CYP7B1, LXR-β, and ERβ, with the exception of statistically significant heterogeneity by LXR-β status in the subgroup of women perimenopausal at blood collection (p = 0.02). Conclusion This exploratory study suggests limited associations between tumor marker status and epidemiologic or breast cancer characteristics. Furthermore, the association between circulating 27HC and breast cancer risk may not vary by tumor expression of CYP27A1, CYP7B1, LXR-β, or ERβ. Electronic supplementary material The online version of this article (10.1186/s13058-020-1253-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Charlotte Le Cornet
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Britta Walter
- Institute of Pathology, University Hospital Heidelberg, Im Neuenheimer Feld 224, 69120, Heidelberg, Germany
| | - Disorn Sookthai
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Theron S Johnson
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Tilman Kühn
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Ester Herpel
- Institute of Pathology, University Hospital Heidelberg, Im Neuenheimer Feld 224, 69120, Heidelberg, Germany.,Tissue Bank of the National Center for Tumor Diseases (NCT), Im Neuenheimer Feld 460, 69120, Heidelberg, Germany
| | - Rudolf Kaaks
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
| | - Renée T Fortner
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany.
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10
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Shi SZ, Lee EJ, Lin YJ, Chen L, Zheng HY, He XQ, Peng JY, Noonepalle SK, Shull AY, Pei FC, Deng LB, Tian XL, Deng KY, Shi H, Xin HB. Recruitment of monocytes and epigenetic silencing of intratumoral CYP7B1 primarily contribute to the accumulation of 27-hydroxycholesterol in breast cancer. Am J Cancer Res 2019; 9:2194-2208. [PMID: 31720082 PMCID: PMC6834472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 09/28/2019] [Indexed: 06/10/2023] Open
Abstract
Previous studies showed that intratumoral 27-Hydroxycholesterol (27-HC), a metabolite of cholesterol, promotes growth, invasion and migration of breast cancer cells and that tumor-associated macrophages (TAMs) in breast cancers are closely related to tumor growth and metastatic progression. However, the relationship between 27-HC and TAMs in breast cancer remains unclear. In the present study, we observed that CYP27A1, the 27-HC synthesizing enzyme, was expressed in a much higher level in THP1 monocytes and THP1-derived macrophages than in breast cancer cells, and the promoter of CYP7B1, the degrading enzyme for 27-HC, was highly methylated in breast tumor cells. In addition, THP-1 monocytes and murine bone marrow cells were differentiated toward M2 type macrophages after being co-cultured with breast cancer cells or being exposed to exosomes derived from breast cancer cells. M2 type macrophages produced higher amounts of 27-HC than M0 and M1 type macrophages. 27-HC not only stimulated ER+ cancer cell proliferation as reported, but also promoted the recruitment of CCR2- and CCR5-expressing monocytes by inducing macrophages to express multiple chemokines including CCL2, CCL3 and CCL4. Taken together, our data demonstrate that the hypermethylation of CYP7B1 and recruitment of monocytes likely contribute to the accumulation of 27-Hydroxycholesterol in breast cancer and that the interaction of 27-HC with macrophages further promote the development of breast cancer.
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Affiliation(s)
- Shui-Zhen Shi
- The National Engineering Research Center for Bioengineering Drugs and Technologies, Institute of Translational Medicine, Nanchang UniversityNanchang, Jiangxi, China
- College of Life Science, Nanchang UniversityNanchang, Jiangxi, China
| | - Eun-Joon Lee
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta UniversityAugusta, Georgia
- Georgia Cancer Center, Medical College of Georgia, Augusta UniversityAugusta, Georgia
| | - Ying-Jiong Lin
- The National Engineering Research Center for Bioengineering Drugs and Technologies, Institute of Translational Medicine, Nanchang UniversityNanchang, Jiangxi, China
| | - Lu Chen
- The National Engineering Research Center for Bioengineering Drugs and Technologies, Institute of Translational Medicine, Nanchang UniversityNanchang, Jiangxi, China
| | - Huai-Yu Zheng
- The National Engineering Research Center for Bioengineering Drugs and Technologies, Institute of Translational Medicine, Nanchang UniversityNanchang, Jiangxi, China
| | - Xiang-Qin He
- The National Engineering Research Center for Bioengineering Drugs and Technologies, Institute of Translational Medicine, Nanchang UniversityNanchang, Jiangxi, China
- College of Life Science, Nanchang UniversityNanchang, Jiangxi, China
| | - Jing-Yi Peng
- The National Engineering Research Center for Bioengineering Drugs and Technologies, Institute of Translational Medicine, Nanchang UniversityNanchang, Jiangxi, China
| | - Satish K Noonepalle
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta UniversityAugusta, Georgia
- Georgia Cancer Center, Medical College of Georgia, Augusta UniversityAugusta, Georgia
| | - Austin Y Shull
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta UniversityAugusta, Georgia
- Georgia Cancer Center, Medical College of Georgia, Augusta UniversityAugusta, Georgia
| | - Felix C Pei
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta UniversityAugusta, Georgia
| | - Li-Bin Deng
- The National Engineering Research Center for Bioengineering Drugs and Technologies, Institute of Translational Medicine, Nanchang UniversityNanchang, Jiangxi, China
| | - Xiao-Li Tian
- College of Life Science, Nanchang UniversityNanchang, Jiangxi, China
| | - Ke-Yu Deng
- The National Engineering Research Center for Bioengineering Drugs and Technologies, Institute of Translational Medicine, Nanchang UniversityNanchang, Jiangxi, China
| | - Huidong Shi
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta UniversityAugusta, Georgia
- Georgia Cancer Center, Medical College of Georgia, Augusta UniversityAugusta, Georgia
| | - Hong-Bo Xin
- The National Engineering Research Center for Bioengineering Drugs and Technologies, Institute of Translational Medicine, Nanchang UniversityNanchang, Jiangxi, China
- College of Life Science, Nanchang UniversityNanchang, Jiangxi, China
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11
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Baker ME, Lathe R. The promiscuous estrogen receptor: Evolution of physiological estrogens and response to phytochemicals and endocrine disruptors. J Steroid Biochem Mol Biol 2018; 184:29-37. [PMID: 30009950 DOI: 10.1016/j.jsbmb.2018.07.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 06/25/2018] [Accepted: 07/03/2018] [Indexed: 01/03/2023]
Abstract
Many actions of estradiol (E2), the principal physiological estrogen in vertebrates, are mediated by estrogen receptor-α (ERα) and ERβ. An important physiological feature of vertebrate ERs is their promiscuous response to several physiological steroids, including estradiol (E2), Δ5-androstenediol, 5α-androstanediol, and 27-hydroxycholesterol. A novel structural characteristic of Δ5-androstenediol, 5α-androstanediol, and 27-hydroxycholesterol is the presence of a C19 methyl group, which precludes the presence of an aromatic A ring with a C3 phenolic group that is a defining property of E2. The structural diversity of these estrogens can explain the response of the ER to synthetic chemicals such as bisphenol A and DDT, which disrupt estrogen physiology in vertebrates, and the estrogenic activity of a variety of plant-derived chemicals such as genistein, coumestrol, and resveratrol. Diversity in the A ring of physiological estrogens also expands potential structures of industrial chemicals that can act as endocrine disruptors. Compared to E2, synthesis of 27-hydroxycholesterol and Δ5-androstenediol is simpler, leading us, based on parsimony, to propose that one or both of these steroids or a related metabolite was a physiological estrogen early in the evolution of the ER, with E2 assuming this role later as the canonical estrogen. In addition to the well-studied role of the ER in reproductive physiology, the ER also is an important transcription factor in non-reproductive tissues such as the cardiovascular system, kidney, bone, and brain. Some of these ER actions in non-reproductive tissues appeared early in vertebrate evolution, long before the emergence of mammals.
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Affiliation(s)
- Michael E Baker
- Division of Nephrology-Hypertension, Department of Medicine, 0693, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0693, USA.
| | - Richard Lathe
- Division of Infection and Pathway Medicine, University of Edinburgh, Little France, Edinburgh, UK.
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12
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Munir MT, Ponce C, Powell CA, Tarafdar K, Yanagita T, Choudhury M, Gollahon LS, Rahman SM. The contribution of cholesterol and epigenetic changes to the pathophysiology of breast cancer. J Steroid Biochem Mol Biol 2018; 183:1-9. [PMID: 29733910 DOI: 10.1016/j.jsbmb.2018.05.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 04/12/2018] [Accepted: 05/03/2018] [Indexed: 12/30/2022]
Abstract
Breast cancer is one of the most commonly diagnosed cancers in women. Accumulating evidence suggests that cholesterol plays an important role in the development of breast cancer. Even though the mechanistic link between these two factors is not well understood, one possibility is that dysregulated cholesterol metabolism may affect lipid raft and membrane fluidity and can promote tumor development. Current studies have shown oxysterol 27-hydroxycholesterol (27-HC) as a critical regulator of cholesterol and breast cancer pathogenesis. This is supported by the significantly higher expression of CYP27A1 (cytochrome P450, family 27, subfamily A, polypeptide 1) in breast cancers. This enzyme is responsible for 27-HC synthesis from cholesterol. It has been shown that 27-HC can not only increase the proliferation of estrogen receptor (ER)-positive breast cancer cells but also stimulate tumor growth and metastasis in several breast cancer models. This phenomenon is surprising since 27-HC and other oxysterols generally reduce intracellular cholesterol levels by activating the liver X receptors (LXRs). Resolving this paradox will elucidate molecular pathways by which cholesterol, ER, and LXR are connected to breast cancer. These findings will also provide the rationale for evaluating pharmaceutical approaches that manipulate cholesterol or 27-HC synthesis in order to mitigate the impact of cholesterol on breast cancer pathophysiology. In addition to cholesterol, epigenetic changes including non-coding RNAs, and microRNAs, DNA methylation, and histone modifications, have all been shown to control tumorigenesis. The purpose of this review is to discuss the link between altered cholesterol metabolism and epigenetic modification during breast cancer progression.
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Affiliation(s)
- Maliha T Munir
- Nutritional Sciences, Texas Tech University, Lubbock, Texas, USA
| | | | - Catherine A Powell
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M Health Sciences Center, College Station, Texas, USA
| | | | | | - Mahua Choudhury
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M Health Sciences Center, College Station, Texas, USA
| | - Lauren S Gollahon
- Department of Biological Sciences, Texas Tech University, Lubbock, Texas, USA
| | - Shaikh M Rahman
- Nutritional Sciences, Texas Tech University, Lubbock, Texas, USA.
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13
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Challenges and perspectives in the treatment of diabetes associated breast cancer. Cancer Treat Rev 2018; 70:98-111. [PMID: 30130687 DOI: 10.1016/j.ctrv.2018.08.004] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 08/02/2018] [Accepted: 08/09/2018] [Indexed: 12/12/2022]
Abstract
Type 2 diabetes mellitus is one of the most common chronic disease worldwide and affects all cross-sections of the society including children, women, youth and adults. Scientific evidence has linked diabetes to higher incidence, accelerated progression and increased aggressiveness of different cancers. Among the different forms of cancer, research has reinforced a link between diabetes and the risk of breast cancer. Some studies have specifically linked diabetes to the highly aggressive, triple negative breast cancers (TNBCs) which do not respond to conventional hormonal/HER2 targeted interventions, have chances of early recurrence, metastasize, tend to be more invasive in nature and develop drug resistance. Commonly used anti-diabetic drugs, such as metformin, have recently gained importance in the treatment of breast cancer due to their proposed anti-cancer properties. Here we discuss the link between diabetes and breast cancer, the metabolic disturbances in diabetes that support the development of breast cancer, the challenges involved and future perspective and directions. We link the three main metabolic disturbances (dyslipidemia, hyperinsulinemia and hyperglycemia) that occur in diabetes to potential aberrant molecular pathways that may lead to the development of an oncogenic phenotype of the breast tissue, thereby leading to acceleration of cell growth, proliferation, migration, inflammation, angiogenesis, EMT and metastasis and inhibition of apoptosis in breast cancer cells. Furthermore, managing diabetes and treating cancer using a combination of anti-diabetic and classical anti-cancer drugs should prove to be more efficient in the treatment diabetes associated cancers.
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14
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Brooks SW, Dykes AC, Schreurs BG. A High-Cholesterol Diet Increases 27-Hydroxycholesterol and Modifies Estrogen Receptor Expression and Neurodegeneration in Rabbit Hippocampus. J Alzheimers Dis 2018; 56:185-196. [PMID: 27911307 DOI: 10.3233/jad-160725] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Hypercholesterolemia has been implicated in numerous health problems from cardiovascular disease to neurodegeneration. High serum cholesterol levels in midlife have been associated with an increased risk of developing Alzheimer's disease (AD) later in life which suggests that the pathways leading to AD pathology might be activated decades before the symptoms of the disease are detected. Cholesterol-fed animals, particularly cholesterol-fed rabbits, exhibit brain pathology similar to the changes found in brains of AD patients. Dietary cholesterol, which cannot pass the blood-brain barrier, is thought to influence central nervous system homeostasis by increased transport of its circulatory breakdown product, 27-hydroxycholesterol (27-OHC), into the brain. 27-OHC is an endogenous selective estrogen receptor modulator. Estrogen-mediated non-reproductive functions require estrogen receptors (ERs) and include modulation of mitochondrial function and structure, as well as regulation of synaptogenesis in the brain. ERs are located in brain areas affected early in AD pathogenesis, including the hippocampus. Here we report that increase in serum cholesterol, induced by feeding rabbits a high-cholesterol diet, is associated with higher levels of 27-OHC in the brain as well as increased levels of neurodegeneration in the hippocampus. Furthermore, these results are accompanied by changes in expression of ERs in the hippocampus as well as a decrease in hippocampal mitochondria. These findings provide an important insight into one of the possible mechanisms involved in the development of AD, and shed light on the processes that may antedate amyloid-β and tau phosphorylation changes currently hypothesized to cause AD symptomology and pathology.
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Affiliation(s)
- Sylwia W Brooks
- School of Medicine, West Virginia University, Morgantown, WV, USA.,Blanchette Rockefeller Neurosciences Institute, Morgantown, WV, USA
| | - Ava C Dykes
- Molecular Biology Core Facility, Centers for Disease Control and Prevention/National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Bernard G Schreurs
- School of Medicine, West Virginia University, Morgantown, WV, USA.,Blanchette Rockefeller Neurosciences Institute, Morgantown, WV, USA
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15
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Marwarha G, Raza S, Hammer K, Ghribi O. 27-hydroxycholesterol: A novel player in molecular carcinogenesis of breast and prostate cancer. Chem Phys Lipids 2017; 207:108-126. [PMID: 28583434 DOI: 10.1016/j.chemphyslip.2017.05.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 05/31/2017] [Accepted: 05/31/2017] [Indexed: 12/13/2022]
Abstract
Several studies have suggested an etiological role for hypercholesterolemia in the pathogenesis of breast cancer and prostate cancer (PCa). However, the molecular mechanisms that underlie and mediate the hypercholesterolemia-fostered increased risk for breast cancer and PCa are yet to be determined. The discovery that the most abundant cholesterol oxidized metabolite in the plasma, 27 hydroxycholesterol (27-OHC), is a selective estrogen receptor modulator (SERM) and an agonist of Liver X receptors (LXR) partially fills the void in our understanding and knowledge of the mechanisms that may link hypercholesterolemia to development and progression of breast cancer and PCa. The wide spectrum and repertoire of SERM and LXR-dependent effects of 27-OHC in the context of all facets and aspects of breast cancer and prostate cancer biology are reviewed in this manuscript in a very comprehensive manner. This review highlights recent findings pertaining to the role of 27-OHC in breast cancer and PCa and delineates the signaling mechanisms involved in the governing of different facets of tumor biology, that include tumor cell proliferation, epithelial-mesenchymal transition (EMT), as well as tumor cell invasion, migration, and metastasis. We also discuss the limitations of contemporary studies and lack of our comprehension of the entire gamut of effects exerted by 27-OHC that may be relevant to the pathogenesis of breast cancer and PCa. We unveil and propose potential future directions of research that may further our understanding of the role of 27-OHC in breast cancer and PCa and help design therapeutic interventions against endocrine therapy-resistant breast cancer and PCa.
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Affiliation(s)
- Gurdeep Marwarha
- Department of Biomedical Sciences, University of North Dakota School of Medicine and Health Sciences, Grand Forks, North Dakota, 58202, USA
| | - Shaneabbas Raza
- Department of Biomedical Sciences, University of North Dakota School of Medicine and Health Sciences, Grand Forks, North Dakota, 58202, USA
| | - Kimberly Hammer
- Department of Biomedical Sciences, University of North Dakota School of Medicine and Health Sciences, Grand Forks, North Dakota, 58202, USA; Department of Veteran Affairs, Fargo VA Health Care System, Fargo, North Dakota 58102, USA
| | - Othman Ghribi
- Department of Biomedical Sciences, University of North Dakota School of Medicine and Health Sciences, Grand Forks, North Dakota, 58202, USA.
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16
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Brownholland DP, Covey DF. Synthesis of side-chain oxysterols and their enantiomers through cross-metathesis reactions of Δ 22 steroids. Steroids 2017; 121:22-31. [PMID: 28300584 PMCID: PMC5398201 DOI: 10.1016/j.steroids.2017.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 03/02/2017] [Accepted: 03/09/2017] [Indexed: 10/20/2022]
Abstract
A synthetic route that utilizes a cross-metathesis reaction with Δ22 steroids has been developed to prepare sterols with varying C-27 side-chains. Natural sterols containing hydroxyl groups at the 25 and (25R)-26 positions were prepared. Enantiomers of cholesterol and (3β,25R)-26-hydroxycholesterol (27-hydroxycholesterol) trideuterated at C-19 were prepared for future biological studies.
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Affiliation(s)
- David P Brownholland
- Department of Chemistry, Carthage College, 2001 Alford Park, Kenosha, WI 53140, USA.
| | - Douglas F Covey
- Department of Developmental Biology, Washington University in St. Louis, 660 South Euclid Avenue, St. Louis, MO 63110, USA; Department of Anesthesiology, Washington University in St. Louis, 660 South Euclid Avenue, St. Louis, MO 63110, USA; Department of Psychiatry, Washington University in St. Louis, 660 South Euclid Avenue, St. Louis, MO 63110, USA.
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17
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Holzer G, Markov GV, Laudet V. Evolution of Nuclear Receptors and Ligand Signaling. Curr Top Dev Biol 2017; 125:1-38. [DOI: 10.1016/bs.ctdb.2017.02.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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18
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The ROS-mediated activation of STAT-3/VEGF signaling is involved in the 27-hydroxycholesterol-induced angiogenesis in human breast cancer cells. Toxicol Lett 2016; 264:79-86. [DOI: 10.1016/j.toxlet.2016.11.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 11/10/2016] [Accepted: 11/13/2016] [Indexed: 11/22/2022]
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19
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Simigdala N, Gao Q, Pancholi S, Roberg-Larsen H, Zvelebil M, Ribas R, Folkerd E, Thompson A, Bhamra A, Dowsett M, Martin LA. Cholesterol biosynthesis pathway as a novel mechanism of resistance to estrogen deprivation in estrogen receptor-positive breast cancer. Breast Cancer Res 2016; 18:58. [PMID: 27246191 PMCID: PMC4888666 DOI: 10.1186/s13058-016-0713-5] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 04/26/2016] [Indexed: 02/07/2023] Open
Abstract
Background Therapies targeting estrogenic stimulation in estrogen receptor-positive (ER+) breast cancer (BC) reduce mortality, but resistance remains a major clinical problem. Molecular studies have shown few high-frequency mutations to be associated with endocrine resistance. In contrast, expression profiling of primary ER+ BC samples has identified several promising signatures/networks for targeting. Methods To identify common adaptive mechanisms associated with resistance to aromatase inhibitors (AIs), we assessed changes in global gene expression during adaptation to long-term estrogen deprivation (LTED) in a panel of ER+ BC cell lines cultured in 2D on plastic (MCF7, T47D, HCC1428, SUM44 and ZR75.1) or in 3D on collagen (MCF7) to model the stromal compartment. Furthermore, dimethyl labelling followed by LC-MS/MS was used to assess global changes in protein abundance. The role of target genes/proteins on proliferation, ER-mediated transcription and recruitment of ER to target gene promoters was analysed. Results The cholesterol biosynthesis pathway was the common upregulated pathway in the ER+ LTED but not the ER– LTED cell lines, suggesting a potential mechanism dependent on continued ER expression. Targeting the individual genes of the cholesterol biosynthesis pathway with siRNAs caused a 30–50 % drop in proliferation. Further analysis showed increased expression of 25-hydroxycholesterol (HC) in the MCF7 LTED cells. Exogenous 25-HC or 27-HC increased ER-mediated transcription and expression of the endogenous estrogen-regulated gene TFF1 in ER+ LTED cells but not in the ER– LTED cells. Additionally, recruitment of the ER and CREB-binding protein (CBP) to the TFF1 and GREB1 promoters was increased upon treatment with 25-HC and 27-HC. In-silico analysis of two independent studies of primary ER+ BC patients treated with neoadjuvant AIs showed that increased expression of MSMO1, EBP, LBR and SQLE enzymes, required for cholesterol synthesis and increased in our in-vitro models, was significantly associated with poor response to endocrine therapy. Conclusion Taken together, these data provide support for the role of cholesterol biosynthesis enzymes and the cholesterol metabolites, 25-HC and 27-HC, in a novel mechanism of resistance to endocrine therapy in ER+ BC that has potential as a therapeutic target. Electronic supplementary material The online version of this article (doi:10.1186/s13058-016-0713-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nikiana Simigdala
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, SW3 6JB, UK
| | - Qiong Gao
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, SW3 6JB, UK
| | - Sunil Pancholi
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, SW3 6JB, UK
| | | | - Marketa Zvelebil
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, SW3 6JB, UK
| | - Ricardo Ribas
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, SW3 6JB, UK
| | - Elizabeth Folkerd
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, SW3 6JB, UK.,Academic Department of Biochemistry, Royal Marsden Hospital, London, SW3 6JJ, UK
| | - Andrew Thompson
- Proteomics Core Facility, Institute of Cancer Research, London, SW3 6JB, UK
| | - Amandeep Bhamra
- Proteomics Core Facility, Institute of Cancer Research, London, SW3 6JB, UK
| | - Mitch Dowsett
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, SW3 6JB, UK.,Academic Department of Biochemistry, Royal Marsden Hospital, London, SW3 6JJ, UK
| | - Lesley-Ann Martin
- The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, SW3 6JB, UK.
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20
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McDonnell DP, Chang CY, Nelson ER. The estrogen receptor as a mediator of the pathological actions of cholesterol in breast cancer. Climacteric 2014; 17 Suppl 2:60-5. [PMID: 25320023 DOI: 10.3109/13697137.2014.966949] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Despite increased survivorship among patients, breast cancer remains the most common cancer among women and is the second leading cause of cancer death in women. The magnitude of this problem provides a strong impetus for new chemopreventative strategies and/or lifestyle changes that reduce cancer incidence. It is of significance, therefore, that several studies positively correlate obesity to the development of breast cancer. Importantly, obesity is also highly associated with elevated cholesterol, and cholesterol itself is a risk factor for breast cancer. Furthermore, patients taking statins demonstrate a lower breast cancer incidence and decreased recurrence. The recent observation that 27-hydroxycholesterol (27HC) is produced in a stoichiometric manner from cholesterol, together with our recent demonstration that it exerts partial agonist activity on both the estrogen and liver X receptors, suggested a potential mechanistic link between hyper-cholesterolemia and breast cancer incidence. Using genetic and pharmacological approaches, we have recently shown that elevation of circulating 27HC significantly increases tumor growth and metastasis in murine models of breast cancer. Further, we have demonstrated in appropriate animal models that the impact of high-fat diet on tumor pathogenesis can be mitigated by statins or by small molecule inhibitors of CYP27A1. These findings suggest that pharmacological or dietary modifications that lower total cholesterol, and by inference 27HC, are likely to reduce the impact of obesity/metabolic syndrome on breast cancer incidence.
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Affiliation(s)
- D P McDonnell
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine , Durham, NC , USA
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21
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McDonnell DP, Park S, Goulet MT, Jasper J, Wardell SE, Chang CY, Norris JD, Guyton JR, Nelson ER. Obesity, cholesterol metabolism, and breast cancer pathogenesis. Cancer Res 2014; 74:4976-82. [PMID: 25060521 PMCID: PMC4167494 DOI: 10.1158/0008-5472.can-14-1756] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Obesity and altered lipid metabolism are risk factors for breast cancer in pre- and post-menopausal women. These pathologic relationships have been attributed in part to the impact of cholesterol on the biophysical properties of cell membranes and to the influence of these changes on signaling events initiated at the membrane. However, more recent studies have indicated that the oxysterol 27-hydroxycholesterol (27HC), and not cholesterol per se, may be the primary biochemical link between lipid metabolism and cancer. The enzyme responsible for production of 27HC from cholesterol, CYP27A1, is expressed primarily in the liver and in macrophages. In addition, significantly elevated expression of this enzyme within breast tumors has also been observed. It is believed that 27HC, acting through the liver X receptor in macrophages and possibly other cells, is involved in maintaining organismal cholesterol homeostasis. It has also been shown recently that 27HC is an estrogen receptor agonist in breast cancer cells and that it stimulates the growth and metastasis of tumors in several models of breast cancer. These findings provide the rationale for the clinical evaluation of pharmaceutical approaches that interfere with cholesterol/27HC synthesis as a means to mitigate the impact of cholesterol on breast cancer pathogenesis. Cancer Res; 74(18); 4976-82. ©2014 AACR.
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Affiliation(s)
- Donald P McDonnell
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, North Carolina.
| | - Sunghee Park
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, North Carolina
| | - Matthew T Goulet
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, North Carolina
| | - Jeff Jasper
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, North Carolina
| | - Suzanne E Wardell
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, North Carolina
| | - Ching-Yi Chang
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, North Carolina
| | - John D Norris
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, North Carolina
| | - John R Guyton
- Division of Endocrinology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Erik R Nelson
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Illinois
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22
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Abstract
It has been difficult to identify factors that affect the risk of cancer, but we know that people are at higher risk as they get older, or if they have a strong family history of cancer. The potential influence of environmental and behavioral factors remains poorly understood. Early population-based and case-control studies suggested that higher serum levels of IGF1 could be associated with increased cancer risk. Since GH therapy increases IGF1 levels, concern has been raised regarding its potential role as a cancer initiation factor. Experimental evidence and some clinical studies showed that when GH/IGF1 secretion or action was inhibited, a decreased incidence and rate of progression of cancers occurred. However, human populations comprise a garden variety of genotypes that respond differently to the same kind of exposures. Human population studies frequently reveal only very small effects to these exposures. So, are GH and cancer guilty by association? After more than 20 years, leukemia, a major safety issue initially believed associated with GH treatment in children with GH deficiency (GHD), has not been confirmed but the risk of second malignancies in patients previously treated with irradiation has been detected or confirmed through the National Cooperative Growth Study. Overall, this large study confirmed the favorable overall safety profile of GH therapy in children with GHD, and also highlighted specific populations at potential risk. The risk of secondary malignancy following radiotherapy is surely related to radiotherapy more than GH therapy that may increase growth but is less likely to start the oncogenic process. In GH-deficient adults treated with GH, observational studies (KIMS, HypoCCS) have shown that when IGF1 levels were targeted within normal age-related reference ranges, the occurrence of malignancies was not higher than in the general population.
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Affiliation(s)
- Sandra Pekic
- Faculty of Medicine, University of Belgrade and Clinic for Endocrinology, Diabetes and Metabolic Diseases, University Clinical Center Belgrade,
Dr Subotica 13, 11000 Belgrade, Serbia
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23
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Expressomal approach for comprehensive analysis and visualization of ligand sensitivities of xenoestrogen responsive genes. Proc Natl Acad Sci U S A 2013; 110:16508-13. [PMID: 24062438 DOI: 10.1073/pnas.1315929110] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Although biological effects of endocrine disrupting chemicals (EDCs) are often observed at unexpectedly low doses with occasional nonmonotonic dose-response characteristics, transcriptome-wide profiles of sensitivities or dose-dependent behaviors of the EDC responsive genes have remained unexplored. Here, we describe expressome analysis for the comprehensive examination of dose-dependent gene responses and its applications to characterize estrogen responsive genes in MCF-7 cells. Transcriptomes of MCF-7 cells exposed to varying concentrations of representative natural and xenobiotic estrogens for 48 h were determined by microarray and used for computational calculation of interpolated approximations of estimated transcriptomes for 300 doses uniformly distributed in log space for each chemical. The entire collection of these estimated transcriptomes, designated as the expressome, has provided unique opportunities to profile chemical-specific distributions of ligand sensitivities for large numbers of estrogen responsive genes, revealing that at low concentrations estrogens generally tended to suppress rather than to activate transcription. Gene ontology analysis demonstrated distinct functional enrichment between high- and low-sensitivity estrogen responsive genes, supporting the notion that a single EDC chemical can cause qualitatively distinct biological responses at different doses. Expressomal heatmap visualization of dose-dependent induction of Bisphenol A inducible genes showed a weak gene activation peak at a very low concentration range (ca. 0.1 nM) in addition to the main, strong gene activation peak at and above 100 nM. Thus, expressome analysis is a powerful approach to understanding the EDC dose-dependent dynamic changes in gene expression at the transcriptomal level, providing important information on the overall profiles of ligand sensitivities and nonmonotonic responses.
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24
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Abstract
Despite over 15 years of research, the exact role, if any, played by estrogen receptor β (ERβ) in human breast cancer remains elusive. A large body of data both in vitro and in vivo supports its role as an antiproliferative, pro-apoptotic factor especially when co-expressed with ERα. However, there is a smaller body of data associating ERβ with growth and survival in breast cancer. In clinical studies and most often in cell culture studies, the pro-growth and pro-survival activity of ERβ occurs in ERα-negative breast cancer tissue and cells. This bi-faceted role of ERβ is discussed in this review.
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Affiliation(s)
- Etienne Leygue
- Department of Biochemistry and Medical Genetics, Manitoba Institute of Cell Biology, University of Manitoba, 675 McDermot Avenue, Winnipeg, Manitoba, Canada R3E 0V9.
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25
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Nelson ER, Wardell SE, McDonnell DP. The molecular mechanisms underlying the pharmacological actions of estrogens, SERMs and oxysterols: implications for the treatment and prevention of osteoporosis. Bone 2013; 53:42-50. [PMID: 23168292 PMCID: PMC3552054 DOI: 10.1016/j.bone.2012.11.011] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Revised: 10/19/2012] [Accepted: 11/12/2012] [Indexed: 12/12/2022]
Abstract
Estrogen therapy and hormone therapy are effective options for the prevention and treatment of osteoporosis, although because of their significant side effect profile, long term use for these applications is not recommended. Whereas SERMs (Selective Estrogen Receptor Modulators) exhibit a more favorable side effect profile, the currently available medicines in this class are substantially less effective in bone than classical estrogens. However, the results of substantial efforts that have gone into defining the mechanisms that underlie the pharmacology of estrogens, antiestrogens and SERMs have informed the development of the next generation of SERMs and have led to the development of TSECs (Tissue Selective Estrogen Complexes), a new class of ER-modulator. Further, the recent determination that the oxysterol 27-hydroxycholesterol functions as an endogenous SERM has highlighted an unexpected link between hypercholesterolemia and bone biology and must be considered in any discussions of ER-pharmacology. This review considers the most recent progress in our understanding of ER pharmacology and how this has and will be translated into new medicines for the treatment and prevention of osteoporosis.
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Affiliation(s)
- Erik R Nelson
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
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Nelson ER, DuSell CD, Wang X, Howe MK, Evans G, Michalek RD, Umetani M, Rathmell JC, Khosla S, Gesty-Palmer D, McDonnell DP. The oxysterol, 27-hydroxycholesterol, links cholesterol metabolism to bone homeostasis through its actions on the estrogen and liver X receptors. Endocrinology 2011; 152:4691-705. [PMID: 21933863 PMCID: PMC3230052 DOI: 10.1210/en.2011-1298] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Osteoporosis and age-related bone loss are important public health concerns. Therefore, there is a high level of interest in the development of medical interventions and lifestyle changes that reduce the incidence of osteoporosis and age-related bone loss. Decreased bone mineral density is associated with high cholesterol, and patients on statins have increased bone mineral densities, strongly implicating cholesterol as a negative regulator of bone homeostasis. In this study, using both molecular and pharmacological approaches, we have been able to demonstrate that the primary cholesterol metabolite, 27-hydroxycholesterol, through its actions on both estrogen receptors and liver X receptors, decreases osteoblast differentiation and enhances osteoclastogenesis, resulting in increased bone resorbtion in mice. Induction of the short heterodimer partner protein by estrogens in osteoblasts can attenuate the liver X receptor-mediated actions of 27-hydroxycholesterol in bone. These data establish a mechanistic link between cholesterol and bone quality, highlight an unexpected target of estrogens in osteoblasts, and define a signaling axis, the therapeutic exploitation of which is likely to yield novel antiosteoporotic drugs.
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Affiliation(s)
- Erik R Nelson
- Pharmacology and Cancer Biology, Duke University Medical Center, P.O. Box 3813, Durham, North Carolina 27710, USA
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27
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Baker ME. Insights from the structure of estrogen receptor into the evolution of estrogens: implications for endocrine disruption. Biochem Pharmacol 2011; 82:1-8. [PMID: 21420388 DOI: 10.1016/j.bcp.2011.03.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2011] [Revised: 03/01/2011] [Accepted: 03/09/2011] [Indexed: 12/01/2022]
Abstract
In the last decade, there has been important progress in understanding the origins and evolution of receptors for adrenal steroids (aldosterone, cortisol) and sex steroids (estradiol, progesterone, testosterone) due to the sequencing of genomes from animals that are at key sites in vertebrate evolution. Although the estrogen receptor [ER] appears to be the ancestral vertebrate steroid receptor and estradiol [E2] is the physiological ligand for vertebrate ERs, the identity of the ancestral ligand(s) for the ER remains unknown. Here, using an analysis of crystal structures of human ERα with E2 and other chemicals and 3D models of human ERα with 27-hydroxycholesterol and 5-androsten-3β,17β-diol, I propose that one or more Δ5 steroids were the ancestral ligands for the ER, with E2 evolving later as the canonical estrogen. The evidence that chemicals with a β-hydroxy at C3 in a saturated A ring can act as estrogens and the conformational flexibility of the vertebrate ER can explain the diversity of synthetic chemicals that disrupt estrogen responses by binding to vertebrate ERs.
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Affiliation(s)
- Michael E Baker
- Department of Medicine, University of California, San Diego, La Jolla, United States.
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28
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Lappano R, Recchia AG, De Francesco EM, Angelone T, Cerra MC, Picard D, Maggiolini M. The cholesterol metabolite 25-hydroxycholesterol activates estrogen receptor α-mediated signaling in cancer cells and in cardiomyocytes. PLoS One 2011; 6:e16631. [PMID: 21304949 PMCID: PMC3031608 DOI: 10.1371/journal.pone.0016631] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Accepted: 12/27/2010] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The hydroxylated derivatives of cholesterol, such as the oxysterols, play important roles in lipid metabolism. In particular, 25-hydroxycholesterol (25 HC) has been implicated in a variety of metabolic events including cholesterol homeostasis and atherosclerosis. 25 HC is detectable in human plasma after ingestion of a meal rich in oxysterols and following a dietary cholesterol challenge. In addition, the levels of oxysterols, including 25 HC, have been found to be elevated in hypercholesterolemic serum. METHODOLOGY/PRINCIPAL FINDINGS Here, we demonstrate that the estrogen receptor (ER) α mediates gene expression changes and growth responses induced by 25 HC in breast and ovarian cancer cells. Moreover, 25 HC exhibits the ERα-dependent ability like 17 β-estradiol (E2) to inhibit the up-regulation of HIF-1α and connective tissue growth factor by hypoxic conditions in cardiomyocytes and rat heart preparations and to prevent the hypoxia-induced apoptosis. CONCLUSIONS/SIGNIFICANCE The estrogen action exerted by 25 HC may be considered as an additional factor involved in the progression of breast and ovarian tumors. Moreover, the estrogen-like activity of 25 HC elicited in the cardiovascular system may play a role against hypoxic environments.
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Affiliation(s)
- Rosamaria Lappano
- Department of Pharmaco-Biology, University of Calabria, Rende, Italy
| | | | | | - Tommaso Angelone
- Department of Cell Biology, University of Calabria, Rende, Italy
| | | | - Didier Picard
- Département de Biologie Cellulaire, Université de Genève, Genève, Switzerland
| | - Marcello Maggiolini
- Department of Pharmaco-Biology, University of Calabria, Rende, Italy
- * E-mail:
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29
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Plasma levels of 27-hydroxycholesterol in humans and mice with monogenic disturbances of high density lipoprotein metabolism. Atherosclerosis 2010; 214:448-55. [PMID: 21130455 DOI: 10.1016/j.atherosclerosis.2010.10.042] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2010] [Revised: 10/15/2010] [Accepted: 10/19/2010] [Indexed: 01/29/2023]
Abstract
Secretion of 27-hydroxycholesterol (27OHC) from macrophages is considered as an alternative to HDL-mediated reverse transport of excess cholesterol. We investigated 27OHC-concentrations in plasma of humans and mice with monogenic disorders of HDL metabolism. As compared to family controls mutations in the genes for apolipoprotein A-I, ATP binding cassette transporter (ABC) A1 and lecithin:cholesterol acylstransferase (LCAT) were associated with reduced concentrations of both HDL-cholesterol and HDL-27OHC whereas mutations in the genes for cholesterylester transfer protein (CETP), scavenger receptor type BI and hepatic lipase were associated with elevated HDL concentrations of either sterol. Compared to family controls and relative to the concentrations of total 27OHC and cholesterol, lower 27OHC-ester but normal cholesterylester levels were found in HDL of heterozygous LCAT mutation carriers and nonHDL of heterozygous CETP mutation carriers. In family controls, LCAT activity and CETP mass were more strongly correlated with 27OHC-ester than cholesterylester concentrations in HDL and nonHDL, respectively. These findings suggest that the formation and transfer of 27OHC-esters are more sensitive to reduced activities of LCAT and CETP, respectively, than the formation and transfer of cholesterylesters. 27OHC plasma levels were also decreased in apoA-I-, ABCA1- or LCAT-knockout mice but increased in SR-BI-knockout mice. Transplantation of ABCA1- and/or ABCG1-deficient bone marrow into LDL receptor deficient mice decreased plasma levels of 27OHC. In conclusion, mutations or absence of HDL genes lead to distinct alterations in the quantity, esterification or lipoprotein distribution of 27OHC. These findings argue against the earlier suggestion that 27OHC-metabolism in plasma occurs independently of HDL.
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30
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DuSell CD, Nelson ER, Wang X, Abdo J, Mödder UI, Umetani M, Gesty-Palmer D, Javitt NB, Khosla S, McDonnell DP. The endogenous selective estrogen receptor modulator 27-hydroxycholesterol is a negative regulator of bone homeostasis. Endocrinology 2010; 151:3675-85. [PMID: 20501668 PMCID: PMC2940523 DOI: 10.1210/en.2010-0080] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Osteoporosis is an important clinical problem, affecting more than 50% of people over age 50 yr. Estrogen signaling is critical for maintaining proper bone density, and the identification of an endogenous selective estrogen receptor (ER) modulator, 27-hydroxycholesterol (27HC), suggests a mechanism by which nutritional/metabolic status can influence bone biology. With its levels directly correlated with cholesterol, a new possibility emerges wherein 27HC links estrogen and cholesterol signaling to bone homeostasis. In these studies, we found that increasing concentrations of 27HC, both by genetic and pharmacological means, led to decreased bone mineral density that was associated with decreased bone formation and increased bone resorption. Upon manipulation of endogenous estrogen levels, many of the responses to elevated 27HC were altered in such a way as to implicate ER as a likely mediator. In a model of postmenopausal bone loss, some pathologies associated with elevated 27HC were exacerbated by the absence of endogenous estrogens, suggesting that 27HC may act both in concert with and independently from classic ER signaling. These data provide evidence for interactions between estrogen signaling, cholesterol and metabolic disease, and osteoporosis. Patients with high cholesterol likely also have higher than average 27HC, perhaps putting them at a higher risk for bone loss and fracture. More studies are warranted to fully elucidate the mechanism of action of 27HC in bone and to identify ways to modulate this pathway therapeutically.
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Affiliation(s)
- Carolyn D DuSell
- Department of Pharmacology, Duke University Medical Center, Pharmacology and Cancer Biology, Durham, North Carolina 27710, USA
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31
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Cruz P, Torres C, Ramírez ME, Epuñán MJ, Valladares LE, Sierralta WD. Proliferation of human mammary cancer cells exposed to 27-hydroxycholesterol. Exp Ther Med 2010; 1:531-536. [PMID: 22993572 DOI: 10.3892/etm_00000084] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2010] [Accepted: 03/22/2010] [Indexed: 12/25/2022] Open
Abstract
The aim of the present study was to identify the possible mechanisms by which certain estradiol receptor (ER)-positive mammary tumor cells remain resistant to treatment with anti-estrogens or inhibitors of local estradiol (E(2)) production. To this end, we compared the proliferative effects on mammary cancer cells of the novel selective ER modulator 27-hydroxycholesterol (27OHC) to those of E(2), and evaluated their inhibition by ICI 182,780 (ICI). Analysis of the effects on the cell cycle of 27OHC and E(2) in the absence or presence of ICI was conducted. In ER-positive mammary tumor cells, we detected the blocking of 27OHC proliferation-stimulatory activity by simvastatin, as well as the inhibition of E(2)-stimulated proliferation by an α-fetoprotein-derived cyclic nonapeptide. The effects reported herein may be extrapolated to infiltrating mammary cancer, where the activity of local macrophages may stimulate tumor growth. We suggest that increased breast cancer growth in obese patients may be related to increased 27OHC circulatory levels.
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Affiliation(s)
- Pamela Cruz
- Laboratorio de Nutrición y Regulación Metabólica, INTA-Universidad de Chile , Santiago 7830489
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32
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Emerging role of estrogen in the control of cardiometabolic disease. Trends Pharmacol Sci 2010; 31:183-9. [PMID: 20138672 DOI: 10.1016/j.tips.2010.01.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2009] [Revised: 01/04/2010] [Accepted: 01/15/2010] [Indexed: 01/24/2023]
Abstract
Menopause is associated with an increased risk of cardiovascular and metabolic disease that is partly independent of aging. This increased risk is largely due to postmenopausal estrogen loss. Estrogen improves insulin sensitivity and ss-cell function. This is consistent with the increased risk of diabetes after menopause and the finding that menopausal hormone therapy (MHT) lowers the incidence of diabetes. Experimental data suggest that estrogen has anti-atherosclerotic and pro-thrombotic properties. This is consistent with observational and interventional studies suggesting that MHT reduces the risk of cardiovascular disease if initiated early in women with a low-risk profile, but might increase risk in older women and/or those with other risk factors (e.g. dyslipidemia). Future research focusing on improving prevention of cardiometabolic disease through MHT may help to identify agents with higher tissue- and estrogen receptor-isoform specificity than currently used hormones.
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33
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Friedman AE, Ricke WA. Regarding “Prostatic hormonal carcinogenesis is mediated by
in situ
estrogen production and estrogen receptor alpha signaling”. FASEB J 2009; 23:1285; author reply 1285-6. [DOI: 10.1096/fj.09-0502ltr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - William A. Ricke
- Department of MathematicsUniversity of ChicagoChicagoIllinoisUSA
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