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Biological Effects of EF24, a Curcumin Derivative, Alone or Combined with Mitotane in Adrenocortical Tumor Cell Lines. Molecules 2019; 24:molecules24122202. [PMID: 31212829 PMCID: PMC6630722 DOI: 10.3390/molecules24122202] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Curcumin has numerous properties and is used in many preclinical conditions, including cancer. It has low bioavailability, while its derivative EF24 shows enhanced solubility. However, its effects have never been explored in adrenocortical tumor cell models. The efficacy of EF24 alone or combined with mitotane (reference drug for adrenocortical cancer) was evaluated in two adrenocortical tumor cell lines, SW13 and H295R. METHOD AND RESULTS EF24 reduced cell viability with an IC50 (half maximal inhibitory concentration) of 6.5 ± 2.4 μM and 4.9 ± 2.8 μM for SW13 and H295R cells, respectively. Combination index (EF24 associated with mitotane) suggested an additivity effect in both cell lines. Cell cycle analysis revealed an increase in subG0/G1 phase, while motility assay showed a decrease in migratory cell capacity, and similarly, clonogenic assay indicated that EF24 could reduce colony numbers. Furthermore, Wnt/β-catenin, NF-κB, MAPK, and PI3k/Akt pathways were modulated by Western blot analysis when treating cells with EF24 alone or combined with mitotane. In addition, intracellular reactive oxygen species levels increased in both cell lines. CONCLUSION This work analyzed EF24 in adrenocortical tumor cell lines for the first time. These results suggest that EF24 could potentially impact on adrenocortical tumors, laying the foundation for further research in animal models.
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De Martino MC, van Koetsveld PM, Feelders RA, de Herder WW, Dogan F, Janssen JAMJL, Hofste Op Bruinink D, Pivonello C, Waaijers AM, Colao A, de Krijger RR, Pivonello R, Hofland LJ. IGF and mTOR pathway expression and in vitro effects of linsitinib and mTOR inhibitors in adrenocortical cancer. Endocrine 2019; 64:673-684. [PMID: 30838516 PMCID: PMC6551351 DOI: 10.1007/s12020-019-01869-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 02/12/2019] [Indexed: 01/18/2023]
Abstract
PURPOSE The IGF and mTOR-pathways are considered as potential targets for therapy in patients with adrenocortical carcinoma (ACC). This study aims to describe the IGF pathway in ACC and to explore the response to the combined treatment with the IGF1R/IR inhibitor linsitinib, and mTOR inhibitors (sirolimus and everolimus) in in vitro models of ACC. METHODS The protein expression level of IGF2, IGF1R and IGF2R was evaluated by immunohistochemistry in 17 human ACCs and the mRNA expression level of IGF1, IGF2, IGF1R, IR isoforms A and B, IGF2R, IGF-Binding-Proteins[IGFBP]-1, 2, 3 and 6 was evaluated by RT-qPCR in 12 samples. In H295R and HAC15 ACC cell lines the combined effects of linsitinib and sirolimus or everolimus on cell survival were evaluated. RESULTS A high protein expression of IGF2, IGF1R and IGF2R was observed in 82, 65 and 100% of samples, respectively. A high relative expression of IGF2 mRNA was found in the majority of samples. The mRNA levels of the IRA were higher than that of IRB and IGF1R in the majority of samples (75%). Linsitinib inhibits cell growth in the H295R and HAC15 cell lines and, combined with sirolimus or everolimus, linsitinib showed a significant additive effect. CONCLUSIONS In addition to IGF2 and IGF1R, ACC express IGF2R, IRA and several IGFBPs, suggesting that the interplay between the different components of the IGF pathway in ACC could be more complex than previously considered. The addition of mTOR inhibitors to linsitinib may have stronger antiproliferative effects than linsitinib alone.
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Affiliation(s)
- Maria Cristina De Martino
- Department of Internal Medicine, Division Endocrinology, Erasmus Medical Center, Rotterdam, The Netherlands
- Dipartimento di Medicina Clinica e Chirurgia, Università Federico II, Naples, Italy
| | - Peter M van Koetsveld
- Department of Internal Medicine, Division Endocrinology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Richard A Feelders
- Department of Internal Medicine, Division Endocrinology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Wouter W de Herder
- Department of Internal Medicine, Division Endocrinology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Fadime Dogan
- Department of Internal Medicine, Division Endocrinology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Joseph A M J L Janssen
- Department of Internal Medicine, Division Endocrinology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Davine Hofste Op Bruinink
- Department of Internal Medicine, Division Endocrinology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Claudia Pivonello
- Dipartimento di Medicina Clinica e Chirurgia, Università Federico II, Naples, Italy
| | - A Marlijn Waaijers
- Department of Internal Medicine, Division Endocrinology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Annamaria Colao
- Dipartimento di Medicina Clinica e Chirurgia, Università Federico II, Naples, Italy
| | - Ronald R de Krijger
- Departments of Pathology, Erasmus Medical Center, Rotterdam, and University Medical Center Utrecht, Utrecht, The Netherlands
| | - Rosario Pivonello
- Dipartimento di Medicina Clinica e Chirurgia, Università Federico II, Naples, Italy
| | - Leo J Hofland
- Department of Internal Medicine, Division Endocrinology, Erasmus Medical Center, Rotterdam, The Netherlands.
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Nicolson NG, Korah R, Carling T. Adrenocortical cancer cell line mutational profile reveals aggressive genetic background. J Mol Endocrinol 2019; 62:179-186. [PMID: 30870809 DOI: 10.1530/jme-18-0262] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 03/14/2019] [Indexed: 12/19/2022]
Abstract
Adrenocortical carcinomas are rare tumors with poor prognosis and limited treatment options. Although widely used as in vitro models to test novel therapeutic strategies, the adrenocortical carcinoma-derived cell lines NCI-H295R and SW-13 have only partially been described genetically. Our aim was to characterize the mutational landscape of these cells to improve their experimental utility and map them to clinical subtypes of adrenocortical carcinoma. Genomic DNA from NCI-H295R and SW-13 cells was subjected to whole-exome sequencing. Variants were filtered for non-synonymous mutations and curated for validated adrenocortical and pan-cancer driver gene mutations. Genes mutated in the cell lines were mapped using gene ontology and protein pathway tools to determine signaling effects and compared to mutational and clinical characteristics of 92 adrenocortical carcinoma cases from The Cancer Genome Atlas. NCI-H295R and SW-13 cells carried 1325 and 1836 non-synonymous variants, respectively. Of these, 61 and 76 were known cancer driver genes, of which 32 were shared between cell lines. Variant interaction analyses demonstrated dominant TP53 dysregulation in both cell lines complemented by distinct WNT (NCI-H295R) and chromatin remodeling (SW-13) pathway perturbations. Both cell lines genetically resemble more aggressive adrenocortical carcinomas with worse prognosis, for which development of targeted therapies is most critical. Careful incorporation of the genetic landscapes outlined in this study will further the in vitro utility of these cell lines in testing for novel therapeutic approaches for adrenocortical malignancy.
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Affiliation(s)
- Norman G Nicolson
- Department of Surgery, Yale School of Medicine, Yale Endocrine Neoplasia Laboratory, New Haven, Connecticut, USA
| | - Reju Korah
- Department of Surgery, Yale School of Medicine, Yale Endocrine Neoplasia Laboratory, New Haven, Connecticut, USA
| | - Tobias Carling
- Department of Surgery, Yale School of Medicine, Yale Endocrine Neoplasia Laboratory, New Haven, Connecticut, USA
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Fiorentini C, Grisanti S, Cosentini D, Abate A, Rossini E, Berruti A, Sigala S. Molecular Drivers of Potential Immunotherapy Failure in Adrenocortical Carcinoma. JOURNAL OF ONCOLOGY 2019; 2019:6072863. [PMID: 31057613 PMCID: PMC6463568 DOI: 10.1155/2019/6072863] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 03/13/2019] [Indexed: 12/27/2022]
Abstract
Adrenocortical carcinoma (ACC) is a rare, highly aggressive cancer, often insensitive to conventional chemotherapeutics agents. Early diagnosis, followed by radical surgical resection plus/minus adjuvant mitotane therapy, is nowadays the only valuable option. Unfortunately, one out of four patients has metastatic disease at diagnosis and most of radically resected ACC patients are destined to recur with local or metastatic disease. Numerous efforts aimed at identifying molecular alterations crucial for ACC pathogenesis have been extensively conducted, with the hope to develop new treatments. Indeed, multiple genes and pathways have been identified as potentially targetable in ACC patients; however, despite the strong preclinical rationale, translational findings to clinical trials led to date to disappointing results. The immunotherapeutic intervention targeting T-cell checkpoint molecules has been proposed as well, but results obtained in early studies indicate that ACC patients would be unlikely to benefit from immunotherapy. Genetic alterations of different pathways involved in ACC carcinogenesis are also known substrates of resistance to immunotherapy. Among them, β-catenin gene CTNNB1 and TP53 gene are frequently mutated in ACC samples. Overactivation of the β-catenin pathway and loss of p53 protein function are potential tumor-intrinsic factors that, impacting on the ability of ACC cells to recruit dendritic cells, leading to T-cell exclusion, put this tumor among those that are potentially resistant to immunotherapy. Moreover, the steroid phenotype, which implies glucocorticoids hypersecretion in a subset of ACC, contributes to generating an immunosuppressive microenvironment. Here, we review clinical results of immunotherapy in ACC and we highlight molecular mechanisms driving immunotherapy failure in ACC, suggesting possible approaches to overcome resistance.
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Affiliation(s)
- Chiara Fiorentini
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Viale Europa 11, Brescia, Italy
| | - Salvatore Grisanti
- Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia and ASST Spedali Civili di Brescia, Piazzale Spedali Civili 1, Brescia, Italy
| | - Deborah Cosentini
- Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia and ASST Spedali Civili di Brescia, Piazzale Spedali Civili 1, Brescia, Italy
| | - Andrea Abate
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Viale Europa 11, Brescia, Italy
| | - Elisa Rossini
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Viale Europa 11, Brescia, Italy
| | - Alfredo Berruti
- Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia and ASST Spedali Civili di Brescia, Piazzale Spedali Civili 1, Brescia, Italy
| | - Sandra Sigala
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Viale Europa 11, Brescia, Italy
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Hazell G, Horn G, Lightman SL, Spiga F. Dynamics of ACTH-Mediated Regulation of Gene Transcription in ATC1 and ATC7 Adrenal Zona Fasciculata Cell Lines. Endocrinology 2019; 160:587-604. [PMID: 30768667 PMCID: PMC6380881 DOI: 10.1210/en.2018-00840] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Accepted: 01/26/2019] [Indexed: 02/07/2023]
Abstract
We tested the hypothesis that mouse ATC1 and ATC7 cells, the first adrenocortical cell lines to exhibit a complete zona fasciculata (ZF) cell phenotype, respond to dynamic ACTH stimulation in a similar manner as the adrenal gland in vivo. Exploiting our previous in vivo observations that gene transcription within the steroidogenic pathway is dynamically regulated in response to a pulse of ACTH, we exposed ATC1 and ATC7 cells to various patterns of ACTH, including pulsatile and constant, and measured the transcriptional activation of this pathway. We show that pulses of ACTH administered to ATC7 cells can reliably stimulate a pulsatile pattern of transcriptional activity that is comparable to that observed in adrenal ZF cells in vivo. Hourly pulses of ACTH stimulate dynamic increases in CREB phosphorylation (pCREB) and transcription of genes involved in critical steps of steroidogenesis including signal transduction (e.g., MRAP), cholesterol delivery (e.g., StAR), and steroid biosynthesis (e.g., CYP11A1), as well as those relating to transcriptional regulation of steroidogenic factors (e.g., SF-1 and Nur-77). In contrast, constant ACTH stimulation results in a prolonged and exaggerated pCREB and steroidogenic gene transcriptional response. We also show that when a large dose of ACTH (100 nM) is applied after these treatment regimens, a significant increase in steroidogenic transcriptional responsiveness is achieved only in cells that have been exposed to pulsatile, rather than constant, ACTH. Our data support our in vivo observations that pulsatile ACTH is important for the optimal transcriptional responsiveness of the adrenal. Importantly, our data suggest that ATC7 cells respond to dynamic ACTH stimulation.
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Affiliation(s)
- Georgina Hazell
- Bristol Medical School: Translational Health Sciences, University of Bristol, Bristol, United Kingdom
| | - George Horn
- Bristol Medical School: Translational Health Sciences, University of Bristol, Bristol, United Kingdom
| | - Stafford L Lightman
- Bristol Medical School: Translational Health Sciences, University of Bristol, Bristol, United Kingdom
| | - Francesca Spiga
- Bristol Medical School: Translational Health Sciences, University of Bristol, Bristol, United Kingdom
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Fragni M, Fiorentini C, Rossini E, Fisogni S, Vezzoli S, Bonini SA, Dalmiglio C, Grisanti S, Tiberio GAM, Claps M, Cosentini D, Salvi V, Bosisio D, Terzolo M, Missale C, Facchetti F, Memo M, Berruti A, Sigala S. In vitro antitumor activity of progesterone in human adrenocortical carcinoma. Endocrine 2019; 63:592-601. [PMID: 30367443 DOI: 10.1007/s12020-018-1795-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 10/15/2018] [Indexed: 12/17/2022]
Abstract
PURPOSE The management of patients with adrenocortical carcinoma (ACC) is challenging. As mitotane and chemotherapy show limited efficacy, there is an urgent need to develop therapeutic approaches. The aim of this study was to investigate the antitumor activity of progesterone and explore the molecular mechanisms underlying its cytotoxic effects in the NCI-H295R cell line and primary cell cultures derived from ACC patients. METHODS Cell viability, cell cycle, and apoptosis were analyzed in untreated and progesterone-treated ACC cells. The ability of progesterone to affect the Wnt/β-catenin pathway in NCI-H295R cells was investigated by immunofluorescence. Progesterone and mitotane combination experiments were also performed to evaluate their interaction on NCI-H295R cell viability. RESULTS We demonstrated that progesterone exerted a concentration-dependent inhibition of ACC cell viability. Apoptosis was the main mechanism, as demonstrated by a significant increase of apoptosis and cleaved-Caspase-3 levels. Reduction of β-catenin nuclear translocation may contribute to the progesterone cytotoxic effect. The progesterone antineoplastic activity was synergically increased when mitotane was added to the cell culture medium. CONCLUSIONS Our results show that progesterone has antineoplastic activity in ACC cells. The synergistic cytotoxic activity of progesterone with mitotane provides the rationale for testing this combination in a clinical study.
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Affiliation(s)
- Martina Fragni
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Chiara Fiorentini
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Elisa Rossini
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Simona Fisogni
- Pathology Unit, Department of Molecular and Translational Medicine, University of Brescia and ASST Spedali Civili di Brescia, Brescia, Italy
| | - Sara Vezzoli
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Sara A Bonini
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Cristina Dalmiglio
- Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia and ASST Spedali Civili di Brescia, Brescia, Italy
| | - Salvatore Grisanti
- Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia and ASST Spedali Civili di Brescia, Brescia, Italy
| | - Guido A M Tiberio
- Surgical Clinic, Department of Clinical and Experimental Sciences, University of Brescia and ASST Spedali Civili di Brescia, Brescia, Italy
| | - Melanie Claps
- Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia and ASST Spedali Civili di Brescia, Brescia, Italy
| | - Deborah Cosentini
- Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia and ASST Spedali Civili di Brescia, Brescia, Italy
| | - Valentina Salvi
- Section of Oncology and Experimental Immunology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Daniela Bosisio
- Section of Oncology and Experimental Immunology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Massimo Terzolo
- Department of Clinical and Biological Sciences University of Turin, Internal Medicine 1, San Luigi Gonzaga Hospital, Orbassano, Italy
| | - Cristina Missale
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Fabio Facchetti
- Pathology Unit, Department of Molecular and Translational Medicine, University of Brescia and ASST Spedali Civili di Brescia, Brescia, Italy
| | - Maurizio Memo
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Alfredo Berruti
- Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia and ASST Spedali Civili di Brescia, Brescia, Italy.
| | - Sandra Sigala
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
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Creemers SG, van Koetsveld PM, De Herder WW, Dogan F, Franssen GJH, Feelders RA, Hofland LJ. MDR1 inhibition increases sensitivity to doxorubicin and etoposide in adrenocortical cancer. Endocr Relat Cancer 2019; 26:367-378. [PMID: 30650062 DOI: 10.1530/erc-18-0500] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 01/03/2019] [Indexed: 12/17/2022]
Abstract
Chemotherapy for adrenocortical carcinoma (ACC) has limited efficacy and is accompanied by severe toxicity. This lack of effectiveness has been associated with high tumoral levels of the multidrug resistance (MDR) pump P-glycoprotein (P-gp), encoded by the MDR1 gene. In this study, effects of P-gp inhibition on the sensitivity of ACC cells to cytotoxic drugs were evaluated. MDR1 mRNA and P-gp expression were determined in human adrenal tissues and cell lines. H295R, HAC15 and SW13 cells were treated with mitotane, doxorubicin, etoposide, cisplatin and streptozotocin, with or without the P-gp inhibitors verapamil and tariquidar. Cell growth and surviving fraction of colonies were assessed. MDR1 mRNA and P-gp protein expression were lower in ACCs than in adrenocortical adenomas (P < 0.0001; P < 0.01, respectively). MDR1 and P-gp expression were positively correlated in ACC (P < 0.0001, ρ = 0.723). Mitotane, doxorubicin, cisplatin and etoposide dose dependently inhibited cell growth in H295R, HAC15 and SW13. Tariquidar, and in H295R also verapamil, increased the response of HAC15 and H295R to doxorubicin (6.3- and 7.5-fold EC50 decrease in H295R, respectively; all P < 0.0001). Sensitivity to etoposide was increased in H295R and HAC15 by verapamil and tariquidar (all P < 0.0001). Findings were confirmed when assessing colony formation. We show that cytotoxic drugs, except streptozotocin, used for ACC treatment, inhibit ACC cell growth and colony formation at clinically achievable concentrations. P-gp inhibition increases sensitivity to doxorubicin and etoposide, suggesting that MDR1 is involved in sensitivity to these drugs and could be a potential target for cytotoxic treatment improvement in ACC.
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Affiliation(s)
- S G Creemers
- Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - P M van Koetsveld
- Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - W W De Herder
- Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - F Dogan
- Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - G J H Franssen
- Department of Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - R A Feelders
- Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - L J Hofland
- Department of Internal Medicine, Division of Endocrinology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
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Zanin S, Lidron E, Rizzuto R, Pallafacchina G. Methods to Measure Intracellular Ca 2+ Concentration Using Ca 2+-Sensitive Dyes. Methods Mol Biol 2019; 1925:43-58. [PMID: 30674015 DOI: 10.1007/978-1-4939-9018-4_4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Ca2+ ion is universally considered the most versatile second messenger responsible for decoding and regulating the majority of the signaling pathways within the cell. The study of intracellular Ca2+ concentration ([Ca2+]i) dynamics is consequently of primary importance for the interpretation of cellular biology. This chapter will present a relatively simple, largely diffused, and nevertheless robust method to measure variations of [Ca2+]i by the use of the Ca2+-sensitive chemical dye Fura-2. A general protocol for the assessment of [Ca2+]i in adherent cells, applicable to a variety of cell systems, will be first presented. Then, the implementation of Fura-2 to detect [Ca2+]i in two specific cell types, namely, human adrenocortical cells and primary skin fibroblasts, will be discussed in more particulars. Finally, the procedure to monitor Ca2+ influx through the plasma membrane using Fura-2 will be described.
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Affiliation(s)
- Sofia Zanin
- Department of Medicine, University of Padua, Padua, Italy
| | - Elisa Lidron
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Rosario Rizzuto
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Giorgia Pallafacchina
- Department of Biomedical Sciences, University of Padua, Padua, Italy.
- Neuroscience Institute, Italian National Research Council (CNR), Padua, Italy.
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Malaiyandi LM, Sharthiya H, Surachaicharn N, Shams Y, Arshad M, Schupbach C, Kopf PG, Dineley KE. M 3-subtype muscarinic receptor activation stimulates intracellular calcium oscillations and aldosterone production in human adrenocortical HAC15 cells. Mol Cell Endocrinol 2018; 478:1-9. [PMID: 29959979 PMCID: PMC6193837 DOI: 10.1016/j.mce.2018.06.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 06/26/2018] [Accepted: 06/26/2018] [Indexed: 11/25/2022]
Abstract
A previous body of work in bovine and rodent models shows that cholinergic agonists modulate the secretion of steroid hormones from the adrenal cortex. In this study we used live-cell Ca2+ imaging to investigate cholinergic activity in the HAC15 human adrenocortical carcinoma cell line. The cholinergic agonists carbachol and acetylcholine triggered heterogeneous Ca2+ oscillations that were strongly inhibited by antagonists with high affinity for the M3 muscarinic receptor subtype, while preferential block of M1 or M2 receptors was less effective. Acute exposure to carbachol and acetylcholine modestly elevated aldosterone secretion in HAC15 cells, and this effect was also diminished by M3 inhibition. HAC15 cells expressed relatively high levels of mRNA for M3 and M2 receptors, while M1 and M5 mRNA were much lower. In conclusion, our data extend previous findings in non-human systems to implicate the M3 receptor as the dominant muscarinic receptor in the human adrenal cortex.
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Affiliation(s)
- Latha M Malaiyandi
- Department of Anatomy, Midwestern University, Downers Grove, IL, 60515, USA.
| | - Harsh Sharthiya
- Department of Anatomy, Midwestern University, Downers Grove, IL, 60515, USA.
| | | | - Yara Shams
- Department of Pharmacology, Midwestern University, Downers Grove, IL, 60515, USA.
| | - Mohammad Arshad
- Department of Anatomy, Midwestern University, Downers Grove, IL, 60515, USA.
| | - Chad Schupbach
- Department of Pharmacology, Midwestern University, Downers Grove, IL, 60515, USA.
| | - Phillip G Kopf
- Department of Pharmacology, Midwestern University, Downers Grove, IL, 60515, USA.
| | - Kirk E Dineley
- Department of Pharmacology, Midwestern University, Downers Grove, IL, 60515, USA.
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Sanders K, de Wit WL, Mol JA, Kurlbaum M, Kendl S, Kroiss M, Kooistra HS, Galac S. Abiraterone Acetate for Cushing Syndrome: Study in a Canine Primary Adrenocortical Cell Culture Model. Endocrinology 2018; 159:3689-3698. [PMID: 30219917 DOI: 10.1210/en.2018-00588] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 09/07/2018] [Indexed: 12/26/2022]
Abstract
Abiraterone acetate (AA) is a potent inhibitor of steroidogenic enzyme 17α-hydroxylase/17,20-lyase (CYP17A1). AA is approved for the treatment of prostate cancer but could also be used to treat patients with Cushing syndrome (CS). Similar to humans, canine glucocorticoid synthesis requires CYP17A1, providing a useful animal model. The objective of this study was to preclinically investigate the effect of AA on adrenocortical hormone production, cell viability, and mRNA expression of steroidogenic enzymes in canine primary adrenocortical cell cultures (n = 9) from the adrenal glands of nine healthy dogs. The cells were incubated with AA (0.125 nM to 10 μM) for 72 hours under basal conditions and with 100 nM ACTH(1-24). Adrenocortical hormone concentrations were measured in culture medium using liquid chromatography-mass spectrometry, RNA was isolated from cells for subsequent real-time quantitative PCR analysis, and cell viability was assessed with an alamarBlue™ assay. AA reduced cortisol (IC50, 21.4 ± 4.6 nM) without affecting aldosterone under basal and ACTH-stimulated conditions. AA increased progesterone under basal and ACTH-stimulated conditions but reduced corticosterone under basal conditions, suggesting concurrent inhibition of 21-hydroxylation. AA did not affect the mRNA expression of steroidogenic enzymes and did not inhibit cell viability. In summary, primary canine adrenocortical cell culture is a useful model system for drug testing. For the treatment of CS, AA may to be superior to other steroidogenesis inhibitors due to its low toxicity. For future in vivo studies, dogs with endogenous CS may provide a useful animal model.
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Affiliation(s)
- Karin Sanders
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Wesley L de Wit
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Jan A Mol
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Max Kurlbaum
- University Hospital Würzburg, Core Unit Clinical Mass Spectrometry, Würzburg, Germany
- University Hospital Würzburg, Department of Internal Medicine I, Division of Endocrinology and Diabetology, Würzburg, Germany
| | - Sabine Kendl
- University Hospital Würzburg, Core Unit Clinical Mass Spectrometry, Würzburg, Germany
- University Hospital Würzburg, Department of Internal Medicine I, Division of Endocrinology and Diabetology, Würzburg, Germany
| | - Matthias Kroiss
- University Hospital Würzburg, Core Unit Clinical Mass Spectrometry, Würzburg, Germany
- University Hospital Würzburg, Department of Internal Medicine I, Division of Endocrinology and Diabetology, Würzburg, Germany
- Comprehensive Cancer Center Mainfranken, University of Würzburg, Würzburg, Germany
| | - Hans S Kooistra
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Sara Galac
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
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61
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Tamamori-Adachi M, Koga A, Susa T, Fujii H, Tsuchiya M, Okinaga H, Hisaki H, Iizuka M, Kitajima S, Okazaki T. DNA damage response induced by Etoposide promotes steroidogenesis via GADD45A in cultured adrenal cells. Sci Rep 2018; 8:9636. [PMID: 29941883 PMCID: PMC6018231 DOI: 10.1038/s41598-018-27938-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 06/12/2018] [Indexed: 11/17/2022] Open
Abstract
Glucocorticoid production is regulated by adrenocorticotropic hormone (ACTH) via the cyclic adenosine monophosphate (cAMP)/protein kinase A (PKA) pathway in the adrenal cortex, but the changes in steroidogenesis associated with aging are unknown. In this study, we show that cell-autonomous steroidogenesis is induced by non-ACTH- mediated genotoxic stress in human adrenocortical H295R cells. Low-dose etoposide (EP) was used to induce DNA damage as a genotoxic stress, leading to cellular senescence. We found that steroidogenesis was promoted in cells stained with γH2AX, a marker of DNA damaged cells. Among stress-associated and p53-inducible genes, the expression of GADD45A and steroidogenesis-related genes was significantly upregulated. Immunofluorescence analysis revealed that GADD45A accumulated in the nuclei. Metabolite assay using cultured media showed that EP-treated cells were induced to produce and secrete considerable amounts of glucocorticoid. Knockdown of GADD45A using small interfering RNA markedly inhibited the EP-induced upregulation of steroidogenesis-related gene expression, and glucocorticoid production. A p38MAPK inhibitor, but not a PKA inhibitor, suppressed EP-stimulated steroidogenesis. These results suggest that DNA damage itself promotes steroidogenesis via one or more unprecedented non-ACTH-mediated pathway. Specifically, GADD45A plays a crucial role in the steroidogenic processes triggered by EP-stimulated genotoxic stress. Our study sheds new light on an alternate mechanism of steroidogenesis in the adrenal cortex.
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Affiliation(s)
- Mimi Tamamori-Adachi
- Department of Biochemistry, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo, 173-8605, Japan.
| | - Akane Koga
- Department of Biochemistry, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo, 173-8605, Japan.,Department of Practical Pharmacy, Faculty of Pharmaceutical Sciences, Teikyo University, 2-11-1, Kaga, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Takao Susa
- Department of Biochemistry, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Hiroko Fujii
- Department of Biochemistry, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo, 173-8605, Japan.,Department of General Medicine, National Defense Medical College, 3-2, Namiki, Tokorozawa City, Saitama, 359-8513, Japan
| | - Masao Tsuchiya
- Department of Practical Pharmacy, Faculty of Pharmaceutical Sciences, Teikyo University, 2-11-1, Kaga, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Hiroko Okinaga
- Department of Internal Medicine, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Harumi Hisaki
- Department of Biochemistry, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Masayoshi Iizuka
- Department of Biochemistry, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Shigetaka Kitajima
- Department of Biochemical Genetics, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8605, Japan
| | - Tomoki Okazaki
- Department of Biochemistry, Teikyo University School of Medicine, 2-11-1, Kaga, Itabashi-ku, Tokyo, 173-8605, Japan
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62
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Kiseljak-Vassiliades K, Zhang Y, Bagby SM, Kar A, Pozdeyev N, Xu M, Gowan K, Sharma V, Raeburn CD, Albuja-Cruz M, Jones KL, Fishbein L, Schweppe RE, Somerset H, Pitts TM, Leong S, Wierman ME. Development of new preclinical models to advance adrenocortical carcinoma research. Endocr Relat Cancer 2018; 25:437-451. [PMID: 29371329 PMCID: PMC5831504 DOI: 10.1530/erc-17-0447] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 01/25/2018] [Indexed: 01/10/2023]
Abstract
Adrenocortical cancer (ACC) is an orphan malignancy that results in heterogeneous clinical phenotypes and molecular genotypes. There are no curative treatments for this deadly cancer with 35% survival at five years. Our understanding of the underlying pathobiology and our ability to test novel therapeutic targets has been limited due to the lack of preclinical models. Here, we report the establishment of two new ACC cell lines and corresponding patient-derived xenograft (PDX) models. CU-ACC1 cell line and PDX were derived from a perinephric metastasis in a patient whose primary tumor secreted aldosterone. CU-ACC2 cell line and PDX were derived from a liver metastasis in a patient with Lynch syndrome. Short tandem repeat profiling confirmed consistent matches between human samples and models. Both exomic and RNA sequencing profiling were performed on the patient samples and the models, and hormonal secretion was evaluated in the new cell lines. RNA sequencing and immunohistochemistry confirmed the expression of adrenal cortex markers in the PDXs and human tumors. The new cell lines replicate two of the known genetic models of ACC. CU-ACC1 cells had a mutation in CTNNB1 and secreted cortisol but not aldosterone. CU-ACC2 cells had a TP53 mutation and loss of MSH2 consistent with the patient's known germline mutation causing Lynch syndrome. Both cell lines can be transfected and transduced with similar growth rates. These new preclinical models of ACC significantly advance the field by allowing investigation of underlying molecular mechanisms of ACC and the ability to test patient-specific therapeutic targets.
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Affiliation(s)
- Katja Kiseljak-Vassiliades
- Division of Endocrinology, Metabolism and Diabetes, University of Colorado School of Medicine, Aurora, CO 80045
- Research Service Veterans Affairs Medical Center, Denver CO 80220
| | - Yu Zhang
- Division of Endocrinology, Metabolism and Diabetes, University of Colorado School of Medicine, Aurora, CO 80045
| | - Stacey M. Bagby
- Division of Medical Oncology, Department of Medicine, University of Colorado School of Medicine, Aurora, CO 80045
| | - Adwitiya Kar
- Division of Endocrinology, Metabolism and Diabetes, University of Colorado School of Medicine, Aurora, CO 80045
| | - Nikita Pozdeyev
- Division of Endocrinology, Metabolism and Diabetes, University of Colorado School of Medicine, Aurora, CO 80045
| | - Mei Xu
- Division of Endocrinology, Metabolism and Diabetes, University of Colorado School of Medicine, Aurora, CO 80045
| | - Katherine Gowan
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO 80045
| | - Vibha Sharma
- Division of Endocrinology, Metabolism and Diabetes, University of Colorado School of Medicine, Aurora, CO 80045
| | | | - Maria Albuja-Cruz
- Department of Surgery, University of Colorado School of Medicine, Aurora, CO 80045
| | - Kenneth L. Jones
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO 80045
| | - Lauren Fishbein
- Division of Endocrinology, Metabolism and Diabetes, University of Colorado School of Medicine, Aurora, CO 80045
- Research Service Veterans Affairs Medical Center, Denver CO 80220
| | - Rebecca E. Schweppe
- Division of Endocrinology, Metabolism and Diabetes, University of Colorado School of Medicine, Aurora, CO 80045
| | - Hilary Somerset
- Department of Pathology; University of Colorado School of Medicine, Aurora, CO 80045
| | - Todd M. Pitts
- Division of Medical Oncology, Department of Medicine, University of Colorado School of Medicine, Aurora, CO 80045
| | - Stephen Leong
- Division of Medical Oncology, Department of Medicine, University of Colorado School of Medicine, Aurora, CO 80045
| | - Margaret E. Wierman
- Division of Endocrinology, Metabolism and Diabetes, University of Colorado School of Medicine, Aurora, CO 80045
- Research Service Veterans Affairs Medical Center, Denver CO 80220
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63
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Agosta C, Laugier J, Guyon L, Denis J, Bertherat J, Libé R, Boisson B, Sturm N, Feige JJ, Chabre O, Cherradi N. MiR-483-5p and miR-139-5p promote aggressiveness by targeting N-myc downstream-regulated gene family members in adrenocortical cancer. Int J Cancer 2018. [PMID: 29516499 DOI: 10.1002/ijc.31363] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Adrenocortical carcinoma (ACC) is a tumor with poor prognosis in which overexpression of a panel of microRNAs has been associated with malignancy but a very limited number of investigations on their role in ACC pathogenesis have been conducted. We examined the involvement of miR-483-5p and miR-139-5p in adrenocortical cancer aggressiveness. Using bioinformatics predictions and mRNA/miRNA expression profiles, we performed an integrated analysis to identify inversely correlated miRNA-mRNA pairs in ACC. We identified N-myc downstream-regulated gene family members 2 and 4 (NDRG2 and NDRG4) as targets of miR-483-5p and miR-139-5p, respectively. NDRG2 and NDRG4 expressions were inversely correlated respectively with miR-483-5p and miR-139-5p levels in aggressive ACC samples from two independent cohorts of 20 and 44 ACC. Moreover, upregulation of miR-139-5p and downregulation of NDRG4 demonstrated a striking prognostic value. A direct interaction between miR-483-5p or miR-139-5p and their targets was demonstrated in reporter assays. Downregulation of miR-483-5p or miR-139-5p in the ACC cell lines NCI-H295R and SW13 increased NDRG2 or NDRG4 mRNA and protein expression, compromised adrenocortical cancer cell invasiveness and anchorage-independent growth. MiR-483-5p or miR-139-5p overexpression and NDRG2 or NDRG4 inhibition produce similar changes, which are rescued by NDRG2 or NDRG4 ectopic expression. We established that key factors mediating epithelial-to-mesenchymal transition are downstream effectors of miR-483-5p/NDRG2 and miR-139-5p/NDRG4 pathways. Collectively, our data show for the first time that miR-483-5p/NDRG2 and miR-139-5p/NDRG4 axes promote ACC aggressiveness, with potential implications for prognosis and therapeutic interventions in adrenocortical malignancies.
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Affiliation(s)
- Claire Agosta
- Centre Hospitalier Universitaire Grenoble Alpes, Service d'Endocrinologie, Grenoble, France.,Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Commissariat à l'Energie Atomique, Biologie du Cancer et de l'Infection, Institut de Biosciences et Biotechnologies de Grenoble, Grenoble, France.,Université Grenoble Alpes, Unité Mixte de Recherche-S1036, Grenoble, France
| | - Jonathan Laugier
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Commissariat à l'Energie Atomique, Biologie du Cancer et de l'Infection, Institut de Biosciences et Biotechnologies de Grenoble, Grenoble, France.,Université Grenoble Alpes, Unité Mixte de Recherche-S1036, Grenoble, France
| | - Laurent Guyon
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Commissariat à l'Energie Atomique, Biologie du Cancer et de l'Infection, Institut de Biosciences et Biotechnologies de Grenoble, Grenoble, France.,Université Grenoble Alpes, Unité Mixte de Recherche-S1036, Grenoble, France
| | - Josiane Denis
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Commissariat à l'Energie Atomique, Biologie du Cancer et de l'Infection, Institut de Biosciences et Biotechnologies de Grenoble, Grenoble, France.,Université Grenoble Alpes, Unité Mixte de Recherche-S1036, Grenoble, France
| | - Jérôme Bertherat
- Université Paris Descartes, Paris, France.,Institut National de la Santé et de la Recherche Médicale, Centre National de la Recherche Scientifique UMR 8104, Unité 1016, Institut Cochin, Paris, France.,Département d'Endocrinologie, Centre Expert Cancers Rares de la Surrénale, Assistance Publique Hôpitaux de Paris, Hôpital Cochin, Paris, France
| | - Rossella Libé
- Université Paris Descartes, Paris, France.,Institut National de la Santé et de la Recherche Médicale, Centre National de la Recherche Scientifique UMR 8104, Unité 1016, Institut Cochin, Paris, France.,Département d'Endocrinologie, Centre Expert Cancers Rares de la Surrénale, Assistance Publique Hôpitaux de Paris, Hôpital Cochin, Paris, France
| | - Bruno Boisson
- Centre Hospitalier Universitaire Grenoble Alpes, Institut de Biologie et de Pathologie, Grenoble, France
| | - Nathalie Sturm
- Centre Hospitalier Universitaire Grenoble Alpes, Institut de Biologie et de Pathologie, Grenoble, France
| | - Jean-Jacques Feige
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Commissariat à l'Energie Atomique, Biologie du Cancer et de l'Infection, Institut de Biosciences et Biotechnologies de Grenoble, Grenoble, France.,Université Grenoble Alpes, Unité Mixte de Recherche-S1036, Grenoble, France
| | - Olivier Chabre
- Centre Hospitalier Universitaire Grenoble Alpes, Service d'Endocrinologie, Grenoble, France.,Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Commissariat à l'Energie Atomique, Biologie du Cancer et de l'Infection, Institut de Biosciences et Biotechnologies de Grenoble, Grenoble, France.,Université Grenoble Alpes, Unité Mixte de Recherche-S1036, Grenoble, France
| | - Nadia Cherradi
- Institut National de la Santé et de la Recherche Médicale, Unité 1036, Grenoble, France.,Commissariat à l'Energie Atomique, Biologie du Cancer et de l'Infection, Institut de Biosciences et Biotechnologies de Grenoble, Grenoble, France.,Université Grenoble Alpes, Unité Mixte de Recherche-S1036, Grenoble, France
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64
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Hasanovic A, Ruggiero C, Jung S, Rapa I, Signetti L, Ben Hadj M, Terzolo M, Beuschlein F, Volante M, Hantel C, Lalli E, Mus-Veteau I. Targeting the multidrug transporter Patched potentiates chemotherapy efficiency on adrenocortical carcinoma in vitro and in vivo. Int J Cancer 2018; 143:199-211. [PMID: 29411361 DOI: 10.1002/ijc.31296] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 12/22/2017] [Accepted: 01/23/2018] [Indexed: 02/06/2023]
Abstract
One of the crucial challenges in the clinical management of cancer is the resistance to chemotherapeutics. We recently demonstrated that the Hedgehog receptor Patched, which is overexpressed in many recurrent and metastatic cancers, is a multidrug transporter for chemotherapeutic agents such as doxorubicin. The present work provides evidences that Patched is expressed in adrenocortical carcinoma (ACC) patients, and is a major player of the doxorubicin efflux and the doxorubicin resistance in the human ACC cell line H295R. We discovered that methiothepin inhibits the doxorubicin efflux activity of Patched. This drug-like molecule enhances the cytotoxic, pro-apoptotic, antiproliferative and anticlonogenic effects of doxorubicin on ACC cells which endogenously overexpress Patched, and thereby mitigates the resistance of these cancer cells to doxorubicin. Moreover, we report that in mice the combination of methiothepin with doxorubicin prevents the development of xenografted ACC tumors more efficiently than doxorubicin alone by enhancing the accumulation of doxorubicin specifically in tumors without obvious undesirable side effects. Our results suggest that the use of an inhibitor of Patched drug efflux such as methiothepin in combination with doxorubicin could be a promising therapeutic option for adrenocortical carcinoma, and most likely also for other Patched-expressing cancers.
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Affiliation(s)
- Anida Hasanovic
- Université Côte d'Azur, Sophia Antipolis, Valbonne, France.,CNRS UMR7275, Sophia Antipolis, Valbonne, France.,NEOGENEX CNRS International Associated Laboratory, Sophia Antipolis, Valbonne, France.,Institut de Pharmacologie Moléculaire et Cellulaire, Sophia Antipolis, Valbonne, France
| | - Carmen Ruggiero
- Université Côte d'Azur, Sophia Antipolis, Valbonne, France.,CNRS UMR7275, Sophia Antipolis, Valbonne, France.,NEOGENEX CNRS International Associated Laboratory, Sophia Antipolis, Valbonne, France.,Institut de Pharmacologie Moléculaire et Cellulaire, Sophia Antipolis, Valbonne, France
| | - Sara Jung
- Endocrine Research Unit, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-Universität, Munich, Germany
| | - Ida Rapa
- Department of Oncology, University of Turin at San Luigi Hospital, Orbassano, Turin, Italy
| | - Laurie Signetti
- Université Côte d'Azur, Sophia Antipolis, Valbonne, France.,CNRS UMR7275, Sophia Antipolis, Valbonne, France.,NEOGENEX CNRS International Associated Laboratory, Sophia Antipolis, Valbonne, France.,Institut de Pharmacologie Moléculaire et Cellulaire, Sophia Antipolis, Valbonne, France
| | - Monia Ben Hadj
- Université Côte d'Azur, Sophia Antipolis, Valbonne, France.,CNRS UMR7275, Sophia Antipolis, Valbonne, France.,NEOGENEX CNRS International Associated Laboratory, Sophia Antipolis, Valbonne, France.,Institut de Pharmacologie Moléculaire et Cellulaire, Sophia Antipolis, Valbonne, France
| | - Massimo Terzolo
- Department of Oncology, University of Turin at San Luigi Hospital, Orbassano, Turin, Italy
| | - Felix Beuschlein
- Endocrine Research Unit, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-Universität, Munich, Germany.,Klinik für Endokrinologie, Diabetologie und Klinische Ernährung, Universitätsspital Zürich, Zurich, Switzerland
| | - Marco Volante
- Department of Oncology, University of Turin at San Luigi Hospital, Orbassano, Turin, Italy
| | - Constanze Hantel
- Endocrine Research Unit, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-Universität, Munich, Germany.,Klinik für Endokrinologie, Diabetologie und Klinische Ernährung, Universitätsspital Zürich, Zurich, Switzerland
| | - Enzo Lalli
- Université Côte d'Azur, Sophia Antipolis, Valbonne, France.,CNRS UMR7275, Sophia Antipolis, Valbonne, France.,NEOGENEX CNRS International Associated Laboratory, Sophia Antipolis, Valbonne, France.,Institut de Pharmacologie Moléculaire et Cellulaire, Sophia Antipolis, Valbonne, France
| | - Isabelle Mus-Veteau
- Université Côte d'Azur, Sophia Antipolis, Valbonne, France.,CNRS UMR7275, Sophia Antipolis, Valbonne, France.,NEOGENEX CNRS International Associated Laboratory, Sophia Antipolis, Valbonne, France.,Institut de Pharmacologie Moléculaire et Cellulaire, Sophia Antipolis, Valbonne, France
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65
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Tachachartvanich P, Sangsuwan R, Ruiz HS, Sanchez SS, Durkin KA, Zhang L, Smith MT. Assessment of the Endocrine-Disrupting Effects of Trichloroethylene and Its Metabolites Using in Vitro and in Silico Approaches. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:1542-1550. [PMID: 29294279 PMCID: PMC6290898 DOI: 10.1021/acs.est.7b04832] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Trichloroethylene (TCE) is a ubiquitous environmental contaminant, which may have effects on both ecosystem and human health. TCE has been reported to cause several toxic effects, but little effort has been made to assess the ecological risks of TCE or its major metabolites: trichloroethanol (TCOH), trichloroacetic acid, and oxalic acid (OA). In this study, the endocrine-disrupting potential of TCE and its metabolites were investigated using in vitro and in silico approaches. We examined alterations in the steroidogenesis pathway using the NCI-H295R cell line and utilized receptor-mediated luciferase reporter cell lines to identify effects on estrogen and androgen receptors. Molecular docking was also used to explore chemical interactions with these receptors. All test chemicals except OA significantly increased 17β-estradiol production which can be attributed to an up-regulation of 17β-hydroxysteroid dehydrogenase. Moreover, TCOH exhibited significant antiestrogenic activity with a RIC20 (20% relative inhibitory concentration) of 3.7 × 10-7 M. Molecular docking simulation supported this finding with lower docking scores for TCOH, indicating that hydrogen bonds may stabilize the interaction between TCOH and the estrogen receptor binding pocket. These findings suggest that TCE contamination poses an endocrine-disrupting threat, which has implications for both ecological and human health.
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Affiliation(s)
- Phum Tachachartvanich
- Division of Environmental Health Sciences, School of Public Health, University of California Berkeley, Berkeley, California 94720, United States
| | - Rapeepat Sangsuwan
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Heather S. Ruiz
- Division of Environmental Health Sciences, School of Public Health, University of California Berkeley, Berkeley, California 94720, United States
| | - Sylvia S. Sanchez
- Division of Environmental Health Sciences, School of Public Health, University of California Berkeley, Berkeley, California 94720, United States
| | - Kathleen A. Durkin
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, United States
| | - Luoping Zhang
- Division of Environmental Health Sciences, School of Public Health, University of California Berkeley, Berkeley, California 94720, United States
| | - Martyn T. Smith
- Division of Environmental Health Sciences, School of Public Health, University of California Berkeley, Berkeley, California 94720, United States
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66
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Rubin B, Manso J, Monticelli H, Bertazza L, Redaelli M, Sensi F, Zorzan M, Scaroni C, Mian C, Iacobone M, Armanini D, Bertolini C, Barollo S, Boscaro M, Pezzani R. Crude extract of Origanum vulgare L. induced cell death and suppressed MAPK and PI3/Akt signaling pathways in SW13 and H295R cell lines. Nat Prod Res 2018; 33:1646-1649. [PMID: 29334260 DOI: 10.1080/14786419.2018.1425846] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Oregano (Origanum vulgare L.) is a common aromatic plant used in Mediterranean and Asian Regions for treating respiratory diseases, painful menstruation, rheumatoid arthritis, etc. Recently its role as an anticancer plant has been suggested, although oregano has been never evaluated into adrenocortical tumour cell models. This study analysed for the first time the anticancer effects of a crude extract of wild mountain oregano (Origanum vulgare L.) in SW13 and H295R cell lines. The crude extract was characterised by GC/MS and the toxic effects of oregano were first analysed by brine shrimp lethality assay. Our findings demonstrated that oregano decreased cell viability, survival, modified cell cycle and induced cell death (through necrotic process) and that the effects can be attributed to a blockade of MAPK and PI3 K/Akt pathways. These results suggest that oregano extract exerts anticancer activities in adrenocortical tumour cell lines, providing evidence for further research in higher models.
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Affiliation(s)
- Beatrice Rubin
- a Department of Medicine (DIMED) , O.U. Endocrinology, University of Padova , Padova , Italy
| | - Jacopo Manso
- a Department of Medicine (DIMED) , O.U. Endocrinology, University of Padova , Padova , Italy
| | - Halenya Monticelli
- a Department of Medicine (DIMED) , O.U. Endocrinology, University of Padova , Padova , Italy
| | - Loris Bertazza
- a Department of Medicine (DIMED) , O.U. Endocrinology, University of Padova , Padova , Italy
| | - Marco Redaelli
- b AIROB, Associazione Italiana per la Ricerca Oncologica di Base , Padova , Italy.,c Venetian Institute for Molecular Science and Experimental Technologies, VIMSET , Liettoli di Campolongo Maggiore, Italy
| | - Francesca Sensi
- a Department of Medicine (DIMED) , O.U. Endocrinology, University of Padova , Padova , Italy
| | - Maira Zorzan
- d Department of Molecular Medicine (DMM) , University of Padova , Padova , Italy
| | - Carla Scaroni
- a Department of Medicine (DIMED) , O.U. Endocrinology, University of Padova , Padova , Italy
| | - Caterina Mian
- a Department of Medicine (DIMED) , O.U. Endocrinology, University of Padova , Padova , Italy
| | - Maurizio Iacobone
- e Minimally Invasive Endocrine Surgery Unit, Department of Surgery, Oncology and Gastroenterology (DISCOG) , University of Padova , Padova , Italy
| | - Decio Armanini
- a Department of Medicine (DIMED) , O.U. Endocrinology, University of Padova , Padova , Italy
| | - Cristina Bertolini
- b AIROB, Associazione Italiana per la Ricerca Oncologica di Base , Padova , Italy
| | - Susi Barollo
- a Department of Medicine (DIMED) , O.U. Endocrinology, University of Padova , Padova , Italy
| | - Marco Boscaro
- a Department of Medicine (DIMED) , O.U. Endocrinology, University of Padova , Padova , Italy
| | - Raffaele Pezzani
- a Department of Medicine (DIMED) , O.U. Endocrinology, University of Padova , Padova , Italy.,b AIROB, Associazione Italiana per la Ricerca Oncologica di Base , Padova , Italy
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67
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Hadjadj D, Kim SJ, Denecker T, Driss LB, Cadoret JC, Maric C, Baldacci G, Fauchereau F. A hypothesis-driven approach identifies CDK4 and CDK6 inhibitors as candidate drugs for treatments of adrenocortical carcinomas. Aging (Albany NY) 2017; 9:2695-2716. [PMID: 29283884 PMCID: PMC5764399 DOI: 10.18632/aging.101356] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 12/17/2017] [Indexed: 12/17/2022]
Abstract
High proliferation rate and high mutation density are both indicators of poor prognosis in adrenocortical carcinomas. We performed a hypothesis-driven association study between clinical features in adrenocortical carcinomas and the expression levels of 136 genes involved in DNA metabolism and G1/S phase transition. In 79 samples downloaded from The Cancer Genome Atlas portal, high Cyclin Dependent Kinase 6 (CDK6) mRNA levels gave the most significant association with shorter time to relapse and poorer survival of patients. A hierarchical clustering approach assembled most tumors with high levels of CDK6 mRNA into one group. These tumors tend to cumulate mutations activating the Wnt/β-catenin pathway and show reduced MIR506 expression. Actually, the level of MIR506 RNA is inversely correlated with the levels of both CDK6 and CTNNB1 (encoding β-catenin). Together these results indicate that high CDK6 expression is found in aggressive tumors with activated Wnt/β-catenin pathway. Thus we tested the impact of Food and Drug Administration-approved CDK4 and CDK6 inhibitors, namely palbociclib and ribociclib, on SW-13 and NCI-H295R cells. While both drugs reduced viability and induced senescence in SW-13 cells, only palbociclib was effective on the retinoblastoma protein (pRB)-negative NCI-H295R cells, by inducing apoptosis. In NCI-H295R cells, palbociclib induced an increase of the active form of Glycogen Synthase Kinase 3β (GSK3β) responsible for the reduced amount of active β-catenin, and altered the amount of AXIN2 mRNA. Taken together, these data underline the impact of CDK4 and CDK6 inhibitors in treating adrenocortical carcinomas.
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Affiliation(s)
- Djihad Hadjadj
- Pathologies de la Réplication de l'ADN, Université Paris-Diderot – Paris 7, Sorbonne Paris Cité, CNRS UMR7592, Institut Jacques-Monod, 75205 Paris Cedex 13, France
| | - Su-Jung Kim
- Pathologies de la Réplication de l'ADN, Université Paris-Diderot – Paris 7, Sorbonne Paris Cité, CNRS UMR7592, Institut Jacques-Monod, 75205 Paris Cedex 13, France
| | - Thomas Denecker
- Pathologies de la Réplication de l'ADN, Université Paris-Diderot – Paris 7, Sorbonne Paris Cité, CNRS UMR7592, Institut Jacques-Monod, 75205 Paris Cedex 13, France
| | - Laura Ben Driss
- Pathologies de la Réplication de l'ADN, Université Paris-Diderot – Paris 7, Sorbonne Paris Cité, CNRS UMR7592, Institut Jacques-Monod, 75205 Paris Cedex 13, France
| | - Jean-Charles Cadoret
- Pathologies de la Réplication de l'ADN, Université Paris-Diderot – Paris 7, Sorbonne Paris Cité, CNRS UMR7592, Institut Jacques-Monod, 75205 Paris Cedex 13, France
| | - Chrystelle Maric
- Pathologies de la Réplication de l'ADN, Université Paris-Diderot – Paris 7, Sorbonne Paris Cité, CNRS UMR7592, Institut Jacques-Monod, 75205 Paris Cedex 13, France
| | - Giuseppe Baldacci
- Pathologies de la Réplication de l'ADN, Université Paris-Diderot – Paris 7, Sorbonne Paris Cité, CNRS UMR7592, Institut Jacques-Monod, 75205 Paris Cedex 13, France
| | - Fabien Fauchereau
- Pathologies de la Réplication de l'ADN, Université Paris-Diderot – Paris 7, Sorbonne Paris Cité, CNRS UMR7592, Institut Jacques-Monod, 75205 Paris Cedex 13, France
- ePôle de Génoinformatique, Université Paris-Diderot – Paris 7, Sorbonne Paris Cité, CNRS UMR7592, Institut Jacques-Monod, 75205 Paris Cedex 13, France
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Germano A, Rapa I, Duregon E, Votta A, Giorcelli J, Buttigliero C, Scagliotti GV, Volante M, Terzolo M, Papotti M. Tissue Expression and Pharmacological In Vitro Analyses of mTOR and SSTR Pathways in Adrenocortical Carcinoma. Endocr Pathol 2017; 28:95-102. [PMID: 28271381 DOI: 10.1007/s12022-017-9473-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
New therapies for advanced adrenocortical carcinoma (ACC) are urgently needed, as the majority of the patients experience a rapid and inexorable progression despite surgery and adjuvant mitotane. In vitro data suggest that somatostatin receptors (SSTRs) and mTOR pathway might represent reasonable targets for novel therapies, being involved in functionality and growth of ACC cells. However, in vitro analysis of combination treatments targeting both mTOR and SSTR as compared to mitotane are poorly explored in ACC. This study aimed to investigate in vitro the effects on cell growth of pasireotide, everolimus, and mitotane, alone or combined, in the two ACC cell lines H295R and SW13 (mitotane sensitive and resistant, respectively). Moreover, the tissue expression of mTOR pathway molecules and SSTR (types 1-5) was assessed in 58 ACCs. In both cell lines, only everolimus induced a significant inhibition of cell growth. Conversely, the combinations among mitotane, pasireotide, and everolimus produced antagonistic effects on mitotane-induced growth inhibition on H295R cell line. A heterogeneous profile of mTOR-related molecules and SSTR expression was observed in ACC samples, being the mTOR pathway found activated in approximately 30% of cases. In conclusion, our data suggest caution in designing combinations of mitotane with other drugs potentially active in ACC, such as mTOR inhibitors or somatostatin analogs.
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Affiliation(s)
- Antonina Germano
- Department of Clinical and Biological Sciences and Department of Oncology, University of Turin at San Luigi Hospital, Regione Gonzole 10, 10043 Orbassano, Turin, Italy
| | - Ida Rapa
- Department of Clinical and Biological Sciences and Department of Oncology, University of Turin at San Luigi Hospital, Regione Gonzole 10, 10043 Orbassano, Turin, Italy
| | - Eleonora Duregon
- Department of Clinical and Biological Sciences and Department of Oncology, University of Turin at San Luigi Hospital, Regione Gonzole 10, 10043 Orbassano, Turin, Italy.
| | - Arianna Votta
- Department of Clinical and Biological Sciences and Department of Oncology, University of Turin at San Luigi Hospital, Regione Gonzole 10, 10043 Orbassano, Turin, Italy
| | - Jessica Giorcelli
- Department of Clinical and Biological Sciences and Department of Oncology, University of Turin at San Luigi Hospital, Regione Gonzole 10, 10043 Orbassano, Turin, Italy
| | - Consuelo Buttigliero
- Department of Clinical and Biological Sciences and Department of Oncology, University of Turin at San Luigi Hospital, Regione Gonzole 10, 10043 Orbassano, Turin, Italy
| | - Giorgio V Scagliotti
- Department of Clinical and Biological Sciences and Department of Oncology, University of Turin at San Luigi Hospital, Regione Gonzole 10, 10043 Orbassano, Turin, Italy
| | - Marco Volante
- Department of Clinical and Biological Sciences and Department of Oncology, University of Turin at San Luigi Hospital, Regione Gonzole 10, 10043 Orbassano, Turin, Italy
| | - Massimo Terzolo
- Department of Clinical and Biological Sciences and Department of Oncology, University of Turin at San Luigi Hospital, Regione Gonzole 10, 10043 Orbassano, Turin, Italy
| | - Mauro Papotti
- Department of Clinical and Biological Sciences and Department of Oncology, University of Turin at San Luigi Hospital, Regione Gonzole 10, 10043 Orbassano, Turin, Italy
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69
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Morin A, Ruggiero C, Robidel E, Doghman-Bouguerra M, Das AT, Castellano R, Josselin E, Favier J, Lalli E. Establishment of a mouse xenograft model of metastatic adrenocortical carcinoma. Oncotarget 2017; 8:51050-51057. [PMID: 28881628 PMCID: PMC5584229 DOI: 10.18632/oncotarget.16909] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 03/15/2017] [Indexed: 02/07/2023] Open
Abstract
Adrenocortical carcinoma is a rare neoplasm with a poor prognosis. Very important advances have been made in the identification of the genetic determinants of adrenocortical carcinoma pathogenesis but our understanding is still limited about the mechanisms that determine cancer spread and metastasis. One major problem hindering preclinical experimentation for new therapies for adrenocortical carcinoma is represented by the lack of suitable animal models for metastatic disease. With the aim to overcome these limitations, in this study we tested several protocols in order to establish a mouse xenograft model of metastatic adrenocortical carcinoma. The most efficient method, based upon intrasplenic injection followed by splenectomy, produced metastases with high efficiency, whose development could be followed over time by bioluminescence measurements. We expect that the availability of this model will greatly improve the possibilities for preclinical testing of new treatments for advanced-stage disease.
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Affiliation(s)
- Aurélie Morin
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Inserm UMR970, Paris Cardiovascular Research Centre, Paris, France
| | - Carmen Ruggiero
- Université Côte d'Azur, Valbonne, Sophia Antipolis, France.,Institut de Pharmacologie Moléculaire et Cellulaire, Valbonne, Sophia Antipolis, France
| | - Estelle Robidel
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Inserm UMR970, Paris Cardiovascular Research Centre, Paris, France
| | - Mabrouka Doghman-Bouguerra
- Université Côte d'Azur, Valbonne, Sophia Antipolis, France.,Institut de Pharmacologie Moléculaire et Cellulaire, Valbonne, Sophia Antipolis, France
| | - Atze T Das
- Laboratory of Experimental Virology, Department of Medical Microbiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Rémy Castellano
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Emmanuelle Josselin
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Judith Favier
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Inserm UMR970, Paris Cardiovascular Research Centre, Paris, France
| | - Enzo Lalli
- Université Côte d'Azur, Valbonne, Sophia Antipolis, France.,Institut de Pharmacologie Moléculaire et Cellulaire, Valbonne, Sophia Antipolis, France
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70
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Glover AR, Zhao JT, Gill AJ, Weiss J, Mugridge N, Kim E, Feeney AL, Ip JC, Reid G, Clarke S, Soon PSH, Robinson BG, Brahmbhatt H, MacDiarmid JA, Sidhu SB. MicroRNA-7 as a tumor suppressor and novel therapeutic for adrenocortical carcinoma. Oncotarget 2017; 6:36675-88. [PMID: 26452132 PMCID: PMC4742203 DOI: 10.18632/oncotarget.5383] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 09/18/2015] [Indexed: 12/03/2022] Open
Abstract
Adrenocortical carcinoma (ACC) has a poor prognosis with significant unmet clinical need due to late diagnosis, high rates of recurrence/metastasis and poor response to conventional treatment. Replacing tumor suppressor microRNAs (miRNAs) offer a novel therapy, however systemic delivery remains challenging. A number of miRNAs have been described to be under-expressed in ACC however it is not known if they form a part of ACC pathogenesis. Here we report that microRNA-7–5p (miR-7) reduces cell proliferation in vitro and induces G1 cell cycle arrest. Systemic miR-7 administration in a targeted, clinically safe delivery vesicle (EGFREDVTM nanocells) reduces ACC xenograft growth originating from both ACC cell lines and primary ACC cells. Mechanistically, miR-7 targets Raf-1 proto-oncogene serine/threonine kinase (RAF1) and mechanistic target of rapamycin (MTOR). Additionally, miR-7 therapy in vivo leads to inhibition of cyclin dependent kinase 1 (CDK1). In patient ACC samples, CDK1 is overexpressed and miR-7 expression inversely related. In summary, miR-7 inhibits multiple oncogenic pathways and reduces ACC growth when systemically delivered using EDVTM nanoparticles. This data is the first study in ACC investigating the possibility of miRNAs replacement as a novel therapy.
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Affiliation(s)
- Anthony R Glover
- Cancer Genetics Laboratory, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Australia.,Sydney Medical School Northern, Royal North Shore Hospital, University of Sydney, St Leonards, Sydney, NSW, Australia.,University of Sydney Endocrine Surgery Unit, Royal North Shore Hospital, Sydney, St Leonards, Sydney, NSW, Australia
| | - Jing Ting Zhao
- Cancer Genetics Laboratory, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Australia.,Sydney Medical School Northern, Royal North Shore Hospital, University of Sydney, St Leonards, Sydney, NSW, Australia
| | - Anthony J Gill
- Sydney Medical School Northern, Royal North Shore Hospital, University of Sydney, St Leonards, Sydney, NSW, Australia.,Department of Anatomical Pathology, Royal North Shore Hospital and University of Sydney, St Leonards, Sydney, NSW, Australia
| | - Jocelyn Weiss
- EnGeneIC Ltd, Lane Cove West, Sydney, NSW, Australia
| | | | - Edward Kim
- Cancer Genetics Laboratory, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Australia.,Sydney Medical School Northern, Royal North Shore Hospital, University of Sydney, St Leonards, Sydney, NSW, Australia
| | - Alex L Feeney
- Cancer Genetics Laboratory, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Australia.,Sydney Medical School Northern, Royal North Shore Hospital, University of Sydney, St Leonards, Sydney, NSW, Australia
| | - Julian C Ip
- Cancer Genetics Laboratory, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Australia.,Sydney Medical School Northern, Royal North Shore Hospital, University of Sydney, St Leonards, Sydney, NSW, Australia
| | - Glen Reid
- Asbestos Diseases Research Institute, University of Sydney, Concord, Sydney, NSW, Australia
| | - Stephen Clarke
- Sydney Medical School Northern, Royal North Shore Hospital, University of Sydney, St Leonards, Sydney, NSW, Australia.,Department of Oncology, Royal North Shore Hospital and University of Sydney, St Leonards, Sydney, NSW, Australia
| | - Patsy S H Soon
- Ingham Institute for Applied Medical Research, University of New South Wales, Liverpool, NSW, Australia
| | - Bruce G Robinson
- Cancer Genetics Laboratory, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Australia.,Sydney Medical School Northern, Royal North Shore Hospital, University of Sydney, St Leonards, Sydney, NSW, Australia.,Department of Endocrinology, Royal North Shore Hospital and University of Sydney, St Leonards, Sydney, NSW, Australia
| | | | | | - Stan B Sidhu
- Cancer Genetics Laboratory, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Australia.,Sydney Medical School Northern, Royal North Shore Hospital, University of Sydney, St Leonards, Sydney, NSW, Australia.,University of Sydney Endocrine Surgery Unit, Royal North Shore Hospital, Sydney, St Leonards, Sydney, NSW, Australia
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71
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Strickland J, McIlmoil S, Williams BJ, Seager DC, Porter JP, Judd AM. Interleukin-6 increases the expression of key proteins associated with steroidogenesis in human NCI-H295R adrenocortical cells. Steroids 2017; 119:1-17. [PMID: 28063793 DOI: 10.1016/j.steroids.2016.12.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 12/29/2016] [Accepted: 12/30/2016] [Indexed: 01/03/2023]
Abstract
Mechanisms of interleukin-6 (IL-6)-induced cortisol release (CR) were investigated by exposing H295R cells to IL-6 and determining mRNA/protein expression (PCR/western blots) for steroidogenic enzymes (SE), steroidogenic acute regulatory protein (StAR), steroidogenic factor-1 (SF-1) (enhances SE/StAR expression), activator protein 1 (AP-1) (regulates SE/StAR expression) and adrenal hypoplasia congenita-like protein (DAX-1) (inhibits SE/StAR expression). Promoter activity of StAR (SPA) was measured by a luciferase-coupled promoter. Cortisol release was increased by 10ng/mL IL-6 (24h P<0.01). Proteins/mRNAs (StAR, cholesterol side chain cleavage enzyme, SF-1, AP-1) and SPA were increased by IL-6 (60min 1-50ng/mL IL-6; 5ng/mL IL-6 30-120min P<0.05). Four other SE proteins/mRNAs were also increased by 10ng/mL IL-6 (60min P<0.01). Protein/mRNA for DAX-1 was decreased by IL-6 (60min 1-50ng/mL IL-6; 5ng/mL IL-6 30-120min P<0.01). Phosphorylation of Janus kinase (JAK) and signal transducer and activator of transcription (STAT) was increased by IL-6 (JAK2 60min 1-50ng/mL IL-6; 10ng/mL IL-6 5-60min P<0.05; STAT1 and STAT3 60min 10ng/mL IL-6 P<0.01). Inhibition of JAK/STAT with AG490 (10μM) or piceatannol (50μM) blocked (P<0.01 10ng/mL IL-6vs. IL-6 plus AG490 or piceatannol) IL-6-induced increases in SPA and StAR mRNA. In summary, IL-6-induced CR may be facilitated by increased StAR and SE mediated by increased SF-1 and AP-1, decreased DAX-1, and increased phosphorylation of JAK/STAT.
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Affiliation(s)
- Janae Strickland
- Department of Physiology and Developmental Biology and Neuroscience Center, 2025 LSB, Brigham Young University, Provo, UT 84602, United States
| | - Stephen McIlmoil
- Department of Physiology and Developmental Biology and Neuroscience Center, 2025 LSB, Brigham Young University, Provo, UT 84602, United States
| | - Brice J Williams
- Department of Physiology and Developmental Biology and Neuroscience Center, 2025 LSB, Brigham Young University, Provo, UT 84602, United States
| | - Dennis C Seager
- Department of Physiology and Developmental Biology and Neuroscience Center, 2025 LSB, Brigham Young University, Provo, UT 84602, United States
| | - James P Porter
- Department of Physiology and Developmental Biology and Neuroscience Center, 2025 LSB, Brigham Young University, Provo, UT 84602, United States
| | - Allan M Judd
- Department of Physiology and Developmental Biology and Neuroscience Center, 2025 LSB, Brigham Young University, Provo, UT 84602, United States.
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72
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Tsai YY, Rainey WE, Bollag WB. Very low-density lipoprotein (VLDL)-induced signals mediating aldosterone production. J Endocrinol 2017; 232:R115-R129. [PMID: 27913572 PMCID: PMC8310676 DOI: 10.1530/joe-16-0237] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 12/02/2016] [Indexed: 01/14/2023]
Abstract
Aldosterone, secreted by the adrenal zona glomerulosa, enhances sodium retention, thus increasing blood volume and pressure. Excessive production of aldosterone results in high blood pressure and contributes to cardiovascular and renal disease, stroke and visual loss. Hypertension is also associated with obesity, which is correlated with other serious health risks as well. Although weight gain is associated with increased blood pressure, the mechanism by which excess fat deposits increase blood pressure remains unclear. Several studies have suggested that aldosterone levels are elevated with obesity and may represent a link between obesity and hypertension. In addition to hypertension, obese patients typically have dyslipidemia, including elevated serum levels of very low-density lipoprotein (VLDL). VLDL, which functions to transport triglycerides from the liver to peripheral tissues, has been demonstrated to stimulate aldosterone production. Recent studies suggest that the signaling pathways activated by VLDL are similar to those utilized by AngII. Thus, VLDL increases cytosolic calcium levels and stimulates phospholipase D (PLD) activity to result in the induction of steroidogenic acute regulatory (StAR) protein and aldosterone synthase (CYP11B2) expression. These effects seem to be mediated by the ability of VLDL to increase the phosphorylation (activation) of their regulatory transcription factors, such as the cAMP response element-binding (CREB) protein family of transcription factors. Thus, research into the pathways by which VLDL stimulates aldosterone production may identify novel targets for the development of therapies for the treatment of hypertension, particularly those associated with obesity, and other aldosterone-modulated pathologies.
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Affiliation(s)
- Ying-Ying Tsai
- Department of PhysiologyMedical College of Georgia at Augusta University (formerly Georgia Regents University), Augusta, Georgia, USA
| | - William E Rainey
- Departments of Molecular & Integrative Physiology and Internal MedicineUniversity of Michigan, Ann Arbor, Michigan, USA
| | - Wendy B Bollag
- Department of PhysiologyMedical College of Georgia at Augusta University (formerly Georgia Regents University), Augusta, Georgia, USA
- Charlie Norwood VA Medical CenterOne Freedom Way, Augusta, Georgia, USA
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73
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Creemers SG, van Koetsveld PM, van den Dungen ESR, Korpershoek E, van Kemenade FJ, Franssen GJH, de Herder WW, Feelders RA, Hofland LJ. Inhibition of Human Adrenocortical Cancer Cell Growth by Temozolomide in Vitro and the Role of the MGMT Gene. J Clin Endocrinol Metab 2016; 101:4574-4584. [PMID: 27603910 PMCID: PMC5155680 DOI: 10.1210/jc.2016-2768] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Treatment of patients with adrenocortical carcinomas (ACC) with mitotane and/or chemotherapy is often associated with toxicity and poor tumor response. New therapeutic options are urgently needed. OBJECTIVE The objectives of the study were to evaluate the therapeutic possibilities of temozolomide (TMZ) in ACC cells and to assess the potential predictive role of the DNA repair gene O6-Methylguanine-DNA methyltransferase (MGMT) in adrenocortical tumors. METHODS Three human ACC cell lines and eight primary ACC cultures were used to assess effects of TMZ in vitro. In the cell lines, 11 normal adrenals, 16 adrenocortical adenomas, and 29 ACC, MGMT promoter methylation and expression were determined. RESULTS IC50 values of TMZ on cell growth were 39 μM, 38 μM, and 44 μM for H295R, HAC15, and SW13, respectively. TMZ induced apoptosis and provoked cytotoxic and cytostatic effects by reducing the surviving fraction of ACC colonies and the colony size. TMZ thereby induced cell cycle arrests in ACC cell lines. TMZ and mitotane both inhibited growth of ACC cells cultured as three-dimensional spheroids. TMZ inhibited cell amount in five of eight primary ACC cultures and induced apoptosis in seven of eight primary ACC cultures. In ACC cell lines and adrenal tissues, MGMT promoter methylation was low. In ACCs, methylation was inversely correlated with MGMT mRNA expression. MGMT protein expression was not correlated with MGMT methylation. CONCLUSIONS For the first time, we show the therapeutic potential of temozolomide for ACC, offering an urgently needed potential alternative for patients not responding to mitotane alone or with etoposide, doxorubicin, and cisplatin. (Pre-)clinical studies are warranted to assess efficacy in vivo.
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Affiliation(s)
- S G Creemers
- Department of Internal Medicine, Division of Endocrinology (S.G.C., P.M.v.K., E.S.R.v.d.D., W.W.d.H., R.A.F., L.J.H.), and Departments of Pathology (E.K., F.J.v.K.) and Surgery (G.J.H.F.), Erasmus University Medical Center, 3015 CE Rotterdam, The Netherlands
| | - P M van Koetsveld
- Department of Internal Medicine, Division of Endocrinology (S.G.C., P.M.v.K., E.S.R.v.d.D., W.W.d.H., R.A.F., L.J.H.), and Departments of Pathology (E.K., F.J.v.K.) and Surgery (G.J.H.F.), Erasmus University Medical Center, 3015 CE Rotterdam, The Netherlands
| | - E S R van den Dungen
- Department of Internal Medicine, Division of Endocrinology (S.G.C., P.M.v.K., E.S.R.v.d.D., W.W.d.H., R.A.F., L.J.H.), and Departments of Pathology (E.K., F.J.v.K.) and Surgery (G.J.H.F.), Erasmus University Medical Center, 3015 CE Rotterdam, The Netherlands
| | - E Korpershoek
- Department of Internal Medicine, Division of Endocrinology (S.G.C., P.M.v.K., E.S.R.v.d.D., W.W.d.H., R.A.F., L.J.H.), and Departments of Pathology (E.K., F.J.v.K.) and Surgery (G.J.H.F.), Erasmus University Medical Center, 3015 CE Rotterdam, The Netherlands
| | - F J van Kemenade
- Department of Internal Medicine, Division of Endocrinology (S.G.C., P.M.v.K., E.S.R.v.d.D., W.W.d.H., R.A.F., L.J.H.), and Departments of Pathology (E.K., F.J.v.K.) and Surgery (G.J.H.F.), Erasmus University Medical Center, 3015 CE Rotterdam, The Netherlands
| | - G J H Franssen
- Department of Internal Medicine, Division of Endocrinology (S.G.C., P.M.v.K., E.S.R.v.d.D., W.W.d.H., R.A.F., L.J.H.), and Departments of Pathology (E.K., F.J.v.K.) and Surgery (G.J.H.F.), Erasmus University Medical Center, 3015 CE Rotterdam, The Netherlands
| | - W W de Herder
- Department of Internal Medicine, Division of Endocrinology (S.G.C., P.M.v.K., E.S.R.v.d.D., W.W.d.H., R.A.F., L.J.H.), and Departments of Pathology (E.K., F.J.v.K.) and Surgery (G.J.H.F.), Erasmus University Medical Center, 3015 CE Rotterdam, The Netherlands
| | - R A Feelders
- Department of Internal Medicine, Division of Endocrinology (S.G.C., P.M.v.K., E.S.R.v.d.D., W.W.d.H., R.A.F., L.J.H.), and Departments of Pathology (E.K., F.J.v.K.) and Surgery (G.J.H.F.), Erasmus University Medical Center, 3015 CE Rotterdam, The Netherlands
| | - L J Hofland
- Department of Internal Medicine, Division of Endocrinology (S.G.C., P.M.v.K., E.S.R.v.d.D., W.W.d.H., R.A.F., L.J.H.), and Departments of Pathology (E.K., F.J.v.K.) and Surgery (G.J.H.F.), Erasmus University Medical Center, 3015 CE Rotterdam, The Netherlands
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74
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Rege J, Karashima S, Lerario AM, Smith JM, Auchus RJ, Kasa-Vubu JZ, Sasano H, Nakamura Y, White PC, Rainey WE. Age-dependent Increases in Adrenal Cytochrome b5 and Serum 5-Androstenediol-3-sulfate. J Clin Endocrinol Metab 2016; 101:4585-4593. [PMID: 27623070 PMCID: PMC5155691 DOI: 10.1210/jc.2016-2864] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Adrenal production of dehydroepiandrosterone sulfate (DHEA-S) increases throughout childhood owing to expansion of the zona reticularis (ZR). ZR features cells with a steroidogenic phenotype distinct from that of the adjacent zona fasciculata, with higher expression of cytochrome b5 type A (CYB5A) and steroid sulfotransferase type 2A1 but decreased 3β-hydroxysteroid dehydrogenase type 2 (HSD3B2). In addition to DHEA-S, three adrenal Δ5-steroid sulfates could provide additional tools to define adrenal maturation. OBJECTIVE This study sought to simultaneously measure serum levels of four adrenal Δ5-steroid sulfates, pregnenolone sulfate (Preg-S), 17α-hydroxypregnenolone sulfate (17OHPreg-S), DHEA-S, and 5-androstenediol-3-sulfate (Adiol-S) as a function of age and relate their production to the age-dependent adrenal localization of CYB5A. PARTICIPANTS AND METHODS Δ5-steroid sulfates were quantified by liquid chromatography-tandem mass spectrometry in sera from 247 normal children (129 males,118 females) age 1.5-18 y and 42 adults (20 males, 22 females). Immunofluorescence localized HSD3B2 and CYB5A in normal adrenal glands from subjects age 2-35 y. Finally, HAC15 adrenocortical cells were transduced with lentiviral short hairpin RNA to suppress CYB5A expression. RESULTS Of the Δ5-steroid sulfates quantified, DHEA-S was most abundant. Adiol-S increased in parallel with DHEA-S. Steroid ratios (17OHPreg-S/DHEA-S) suggested increases in 17,20-lyase activity during childhood. Immunofluorescence analysis showed age-related increases in ZR CYB5A immunoreactivity. Furthermore, silencing CYB5A in HAC15 adrenocortical cells significantly reduced DHEA-S and Adiol-S production. CONCLUSION Adiol-S shows a similar age-related increase to that of DHEA-S. This likely results from the childhood expansion of CYB5A-expressing ZR, which enhances 17,20-lyase activity and the production of DHEA-S and Adiol-S.
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Affiliation(s)
- Juilee Rege
- Department of Molecular and Integrative Physiology (J.R., S.K., W.E.R.), University of Michigan, Ann Arbor, Michigan 48109; Department of Internal Medicine (A.M.L., R.J.A.), University of Michigan, Ann Arbor, Michigan 48109; Division of Pediatric Endocrinology (J.M.S.), Specially for Children, Austin, Texas 78723; Department of Pediatrics (J.Z.K.-V.), University of Michigan, Ann Arbor, Michigan 48109; Department of Pathology (H.S., Y.N.), Tohoku University School of Medicine, Sendai, 980-8575 Japan; Division of Pathology, Faculty of Medicine (Y.N.), Tohoku Medical and Pharmaceutical University, Sendai, Miyagi 981-8558, Japan; and Department of Pediatrics (P.C.W.), University of Texas Southwestern Medical Center, Dallas, Texas 75235
| | - Shigehiro Karashima
- Department of Molecular and Integrative Physiology (J.R., S.K., W.E.R.), University of Michigan, Ann Arbor, Michigan 48109; Department of Internal Medicine (A.M.L., R.J.A.), University of Michigan, Ann Arbor, Michigan 48109; Division of Pediatric Endocrinology (J.M.S.), Specially for Children, Austin, Texas 78723; Department of Pediatrics (J.Z.K.-V.), University of Michigan, Ann Arbor, Michigan 48109; Department of Pathology (H.S., Y.N.), Tohoku University School of Medicine, Sendai, 980-8575 Japan; Division of Pathology, Faculty of Medicine (Y.N.), Tohoku Medical and Pharmaceutical University, Sendai, Miyagi 981-8558, Japan; and Department of Pediatrics (P.C.W.), University of Texas Southwestern Medical Center, Dallas, Texas 75235
| | - Antonio M Lerario
- Department of Molecular and Integrative Physiology (J.R., S.K., W.E.R.), University of Michigan, Ann Arbor, Michigan 48109; Department of Internal Medicine (A.M.L., R.J.A.), University of Michigan, Ann Arbor, Michigan 48109; Division of Pediatric Endocrinology (J.M.S.), Specially for Children, Austin, Texas 78723; Department of Pediatrics (J.Z.K.-V.), University of Michigan, Ann Arbor, Michigan 48109; Department of Pathology (H.S., Y.N.), Tohoku University School of Medicine, Sendai, 980-8575 Japan; Division of Pathology, Faculty of Medicine (Y.N.), Tohoku Medical and Pharmaceutical University, Sendai, Miyagi 981-8558, Japan; and Department of Pediatrics (P.C.W.), University of Texas Southwestern Medical Center, Dallas, Texas 75235
| | - Joshua M Smith
- Department of Molecular and Integrative Physiology (J.R., S.K., W.E.R.), University of Michigan, Ann Arbor, Michigan 48109; Department of Internal Medicine (A.M.L., R.J.A.), University of Michigan, Ann Arbor, Michigan 48109; Division of Pediatric Endocrinology (J.M.S.), Specially for Children, Austin, Texas 78723; Department of Pediatrics (J.Z.K.-V.), University of Michigan, Ann Arbor, Michigan 48109; Department of Pathology (H.S., Y.N.), Tohoku University School of Medicine, Sendai, 980-8575 Japan; Division of Pathology, Faculty of Medicine (Y.N.), Tohoku Medical and Pharmaceutical University, Sendai, Miyagi 981-8558, Japan; and Department of Pediatrics (P.C.W.), University of Texas Southwestern Medical Center, Dallas, Texas 75235
| | - Richard J Auchus
- Department of Molecular and Integrative Physiology (J.R., S.K., W.E.R.), University of Michigan, Ann Arbor, Michigan 48109; Department of Internal Medicine (A.M.L., R.J.A.), University of Michigan, Ann Arbor, Michigan 48109; Division of Pediatric Endocrinology (J.M.S.), Specially for Children, Austin, Texas 78723; Department of Pediatrics (J.Z.K.-V.), University of Michigan, Ann Arbor, Michigan 48109; Department of Pathology (H.S., Y.N.), Tohoku University School of Medicine, Sendai, 980-8575 Japan; Division of Pathology, Faculty of Medicine (Y.N.), Tohoku Medical and Pharmaceutical University, Sendai, Miyagi 981-8558, Japan; and Department of Pediatrics (P.C.W.), University of Texas Southwestern Medical Center, Dallas, Texas 75235
| | - Josephine Z Kasa-Vubu
- Department of Molecular and Integrative Physiology (J.R., S.K., W.E.R.), University of Michigan, Ann Arbor, Michigan 48109; Department of Internal Medicine (A.M.L., R.J.A.), University of Michigan, Ann Arbor, Michigan 48109; Division of Pediatric Endocrinology (J.M.S.), Specially for Children, Austin, Texas 78723; Department of Pediatrics (J.Z.K.-V.), University of Michigan, Ann Arbor, Michigan 48109; Department of Pathology (H.S., Y.N.), Tohoku University School of Medicine, Sendai, 980-8575 Japan; Division of Pathology, Faculty of Medicine (Y.N.), Tohoku Medical and Pharmaceutical University, Sendai, Miyagi 981-8558, Japan; and Department of Pediatrics (P.C.W.), University of Texas Southwestern Medical Center, Dallas, Texas 75235
| | - Hironobu Sasano
- Department of Molecular and Integrative Physiology (J.R., S.K., W.E.R.), University of Michigan, Ann Arbor, Michigan 48109; Department of Internal Medicine (A.M.L., R.J.A.), University of Michigan, Ann Arbor, Michigan 48109; Division of Pediatric Endocrinology (J.M.S.), Specially for Children, Austin, Texas 78723; Department of Pediatrics (J.Z.K.-V.), University of Michigan, Ann Arbor, Michigan 48109; Department of Pathology (H.S., Y.N.), Tohoku University School of Medicine, Sendai, 980-8575 Japan; Division of Pathology, Faculty of Medicine (Y.N.), Tohoku Medical and Pharmaceutical University, Sendai, Miyagi 981-8558, Japan; and Department of Pediatrics (P.C.W.), University of Texas Southwestern Medical Center, Dallas, Texas 75235
| | - Yasuhiro Nakamura
- Department of Molecular and Integrative Physiology (J.R., S.K., W.E.R.), University of Michigan, Ann Arbor, Michigan 48109; Department of Internal Medicine (A.M.L., R.J.A.), University of Michigan, Ann Arbor, Michigan 48109; Division of Pediatric Endocrinology (J.M.S.), Specially for Children, Austin, Texas 78723; Department of Pediatrics (J.Z.K.-V.), University of Michigan, Ann Arbor, Michigan 48109; Department of Pathology (H.S., Y.N.), Tohoku University School of Medicine, Sendai, 980-8575 Japan; Division of Pathology, Faculty of Medicine (Y.N.), Tohoku Medical and Pharmaceutical University, Sendai, Miyagi 981-8558, Japan; and Department of Pediatrics (P.C.W.), University of Texas Southwestern Medical Center, Dallas, Texas 75235
| | - Perrin C White
- Department of Molecular and Integrative Physiology (J.R., S.K., W.E.R.), University of Michigan, Ann Arbor, Michigan 48109; Department of Internal Medicine (A.M.L., R.J.A.), University of Michigan, Ann Arbor, Michigan 48109; Division of Pediatric Endocrinology (J.M.S.), Specially for Children, Austin, Texas 78723; Department of Pediatrics (J.Z.K.-V.), University of Michigan, Ann Arbor, Michigan 48109; Department of Pathology (H.S., Y.N.), Tohoku University School of Medicine, Sendai, 980-8575 Japan; Division of Pathology, Faculty of Medicine (Y.N.), Tohoku Medical and Pharmaceutical University, Sendai, Miyagi 981-8558, Japan; and Department of Pediatrics (P.C.W.), University of Texas Southwestern Medical Center, Dallas, Texas 75235
| | - William E Rainey
- Department of Molecular and Integrative Physiology (J.R., S.K., W.E.R.), University of Michigan, Ann Arbor, Michigan 48109; Department of Internal Medicine (A.M.L., R.J.A.), University of Michigan, Ann Arbor, Michigan 48109; Division of Pediatric Endocrinology (J.M.S.), Specially for Children, Austin, Texas 78723; Department of Pediatrics (J.Z.K.-V.), University of Michigan, Ann Arbor, Michigan 48109; Department of Pathology (H.S., Y.N.), Tohoku University School of Medicine, Sendai, 980-8575 Japan; Division of Pathology, Faculty of Medicine (Y.N.), Tohoku Medical and Pharmaceutical University, Sendai, Miyagi 981-8558, Japan; and Department of Pediatrics (P.C.W.), University of Texas Southwestern Medical Center, Dallas, Texas 75235
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75
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Tsai YY, Rainey WE, Johnson MH, Bollag WB. VLDL-activated cell signaling pathways that stimulate adrenal cell aldosterone production. Mol Cell Endocrinol 2016; 433:138-46. [PMID: 27222295 PMCID: PMC4955520 DOI: 10.1016/j.mce.2016.05.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 05/20/2016] [Accepted: 05/20/2016] [Indexed: 01/29/2023]
Abstract
Aldosterone plays an important role in regulating ion and fluid homeostasis and thus blood pressure, and hyperaldosteronism results in hypertension. Hypertension is also observed with obesity, which is associated with additional health risks, including cardiovascular disease. Obese individuals have high serum levels of very low-density lipoprotein (VLDL), which has been shown to stimulate aldosterone production; however, the mechanisms underlying VLDL-induced aldosterone production are still unclear. Here we demonstrate in human adrenocortical carcinoma (HAC15) cells that submaximal concentrations of angiotensin II and VLDL stimulate aldosterone production in an additive fashion, suggesting the possibility of common mechanisms of action. We show using inhibitors that VLDL-induced aldosterone production is mediated by the PLC/IP3/PKC signaling pathway. Our results suggest that PKC is upstream of the extracellular signal-regulated kinase (ERK) activation previously observed with VLDL. An understanding of the mechanisms mediating VLDL-induced aldosterone production may provide insights into therapies to treat obesity-associated hypertension.
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Affiliation(s)
- Ying-Ying Tsai
- Department of Physiology, Medical College of Georgia at Augusta University, 1120 15th Street, Augusta, GA, 30912, United States
| | - William E Rainey
- Department of Physiology, Medical College of Georgia at Augusta University, 1120 15th Street, Augusta, GA, 30912, United States
| | - Maribeth H Johnson
- Department of Biostatistics and Epidemiology, Medical College of Georgia at Augusta University, 1120 15th Street, Augusta, GA, 30912, United States
| | - Wendy B Bollag
- Charlie Norwood VA Medical Center, One Freedom Way, Augusta, GA, 30904, United States; Department of Physiology, Medical College of Georgia at Augusta University, 1120 15th Street, Augusta, GA, 30912, United States.
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76
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Reimer EN, Walenda G, Seidel E, Scholl UI. CACNA1H(M1549V) Mutant Calcium Channel Causes Autonomous Aldosterone Production in HAC15 Cells and Is Inhibited by Mibefradil. Endocrinology 2016; 157:3016-22. [PMID: 27258646 DOI: 10.1210/en.2016-1170] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We recently demonstrated that a recurrent gain-of-function mutation in a T-type calcium channel, CACNA1H(M1549V), causes a novel Mendelian disorder featuring early-onset primary aldosteronism and hypertension. This variant was found independently in five families. CACNA1H(M1549V) leads to impaired channel inactivation and activation at more hyperpolarized potentials, inferred to cause increased calcium entry. We here aimed to study the effect of this variant on aldosterone production. We heterologously expressed empty vector, CACNA1H(WT) and CACNA1H(M1549V) in the aldosterone-producing adrenocortical cancer cell line H295R and its subclone HAC15. Transfection rates, expression levels, and subcellular distribution of the channel were similar between CACNA1H(WT) and CACNA1H(M1549V). We measured aldosterone production by an ELISA and CYP11B2 (aldosterone synthase) expression by real-time PCR. In unstimulated cells, transfection of CACNA1H(WT) led to a 2-fold increase in aldosterone levels compared with vector-transfected cells. Expression of CACNA1H(M1549V) caused a 7-fold increase in aldosterone levels. Treatment with angiotensin II or increased extracellular potassium levels further stimulated aldosterone production in both CACNA1H(WT)- and CACNA1H(M1549V)-transfected cells. Similar results were obtained for CYP11B2 expression. Inhibition of CACNA1H channels with the T-type calcium channel blocker Mibefradil completely abrogated the effects of CACNA1H(WT) and CACNA1H(M1549V) on CYP11B2 expression. These results directly link CACNA1H(M1549V) to increased aldosterone production. They suggest that calcium channel blockers may be beneficial in the treatment of a subset of patients with primary aldosteronism. Such blockers could target CACNA1H or both CACNA1H and the L-type calcium channel CACNA1D that is also expressed in the adrenal gland and mutated in patients with primary aldosteronism.
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Affiliation(s)
- Esther N Reimer
- Department of Nephrology, Medical School, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
| | - Gudrun Walenda
- Department of Nephrology, Medical School, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
| | - Eric Seidel
- Department of Nephrology, Medical School, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
| | - Ute I Scholl
- Department of Nephrology, Medical School, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
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77
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De Martino MC, van Koetsveld PM, Feelders RA, Lamberts SWJ, de Herder WW, Colao A, Pivonello R, Hofland LJ. Effects of combination treatment with sirolimus and mitotane on growth of human adrenocortical carcinoma cells. Endocrine 2016; 52:664-7. [PMID: 26645813 DOI: 10.1007/s12020-015-0818-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 10/20/2015] [Indexed: 12/19/2022]
Affiliation(s)
- Maria Cristina De Martino
- Division of Endocrinology, Department of Internal Medicine, Erasmus MC, Dr. Molewaterplein 50, 3015 GE, Rotterdam, The Netherlands
| | - Peter M van Koetsveld
- Division of Endocrinology, Department of Internal Medicine, Erasmus MC, Dr. Molewaterplein 50, 3015 GE, Rotterdam, The Netherlands
| | - Richard A Feelders
- Division of Endocrinology, Department of Internal Medicine, Erasmus MC, Dr. Molewaterplein 50, 3015 GE, Rotterdam, The Netherlands
| | - Steven W J Lamberts
- Division of Endocrinology, Department of Internal Medicine, Erasmus MC, Dr. Molewaterplein 50, 3015 GE, Rotterdam, The Netherlands
| | - Wouter W de Herder
- Division of Endocrinology, Department of Internal Medicine, Erasmus MC, Dr. Molewaterplein 50, 3015 GE, Rotterdam, The Netherlands
| | - Annamaria Colao
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Uniniversità Federico II di Napoli, Via S. Pansini 5, 80131, Naples, Italy
| | - Rosario Pivonello
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Uniniversità Federico II di Napoli, Via S. Pansini 5, 80131, Naples, Italy
| | - Leo J Hofland
- Division of Endocrinology, Department of Internal Medicine, Erasmus MC, Dr. Molewaterplein 50, 3015 GE, Rotterdam, The Netherlands.
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78
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The aurora kinase inhibitor VX-680 shows anti-cancer effects in primary metastatic cells and the SW13 cell line. Invest New Drugs 2016; 34:531-40. [DOI: 10.1007/s10637-016-0358-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 05/06/2016] [Indexed: 12/18/2022]
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79
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Drelon C, Berthon A, Mathieu M, Ragazzon B, Kuick R, Tabbal H, Septier A, Rodriguez S, Batisse-Lignier M, Sahut-Barnola I, Dumontet T, Pointud JC, Lefrançois-Martinez AM, Baron S, Giordano TJ, Bertherat J, Martinez A, Val P. EZH2 is overexpressed in adrenocortical carcinoma and is associated with disease progression. Hum Mol Genet 2016; 25:2789-2800. [PMID: 27149985 DOI: 10.1093/hmg/ddw136] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 04/25/2016] [Accepted: 04/25/2016] [Indexed: 12/29/2022] Open
Abstract
Adrenal Cortex Carcinoma (ACC) is an aggressive tumour with poor prognosis. Common alterations in patients include constitutive WNT/β-catenin signalling and overexpression of the growth factor IGF2. However, the combination of both alterations in transgenic mice is not sufficient to trigger malignant tumour progression, suggesting that other alterations are required to allow development of carcinomas. Here, we have conducted a study of publicly available gene expression data from three cohorts of ACC patients to identify relevant alterations. Our data show that the histone methyltransferase EZH2 is overexpressed in ACC in the three cohorts. This overexpression is the result of deregulated P53/RB/E2F pathway activity and is associated with increased proliferation and poorer prognosis in patients. Inhibition of EZH2 by RNA interference or pharmacological treatment with DZNep inhibits cellular growth, wound healing and clonogenic growth and induces apoptosis of H295R cells in culture. Further growth inhibition is obtained when DZNep is combined with mitotane, the gold-standard treatment for ACC. Altogether, these observations suggest that overexpression of EZH2 is associated with aggressive progression and may constitute an interesting therapeutic target in the context of ACC.
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Affiliation(s)
- Coralie Drelon
- CNRS, UMR6293, GReD, Inserm U1103, Clermont Université, F-63001 Clermont-Ferrand, France
| | - Annabel Berthon
- CNRS, UMR6293, GReD, Inserm U1103, Clermont Université, F-63001 Clermont-Ferrand, France.,Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD 20892-1103, USA
| | - Mickael Mathieu
- CNRS, UMR6293, GReD, Inserm U1103, Clermont Université, F-63001 Clermont-Ferrand, France
| | - Bruno Ragazzon
- Inserm U1016, CNRS UMR 8104, Université Paris Descartes, Institut Cochin, Paris, France
| | - Rork Kuick
- Department of Biostatistics, University of Michigan Health System, Ann Arbor, MI 48109, USA
| | - Houda Tabbal
- CNRS, UMR6293, GReD, Inserm U1103, Clermont Université, F-63001 Clermont-Ferrand, France
| | - Amandine Septier
- CNRS, UMR6293, GReD, Inserm U1103, Clermont Université, F-63001 Clermont-Ferrand, France
| | - Stéphanie Rodriguez
- CNRS, UMR6293, GReD, Inserm U1103, Clermont Université, F-63001 Clermont-Ferrand, France
| | - Marie Batisse-Lignier
- CNRS, UMR6293, GReD, Inserm U1103, Clermont Université, F-63001 Clermont-Ferrand, France.,Centre Hospitalier Universitaire, Service d'Endocrinologie, Faculté de Médecine, F- 63000 Clermont-Ferrand, France
| | - Isabelle Sahut-Barnola
- CNRS, UMR6293, GReD, Inserm U1103, Clermont Université, F-63001 Clermont-Ferrand, France
| | - Typhanie Dumontet
- CNRS, UMR6293, GReD, Inserm U1103, Clermont Université, F-63001 Clermont-Ferrand, France
| | | | | | - Silvère Baron
- CNRS, UMR6293, GReD, Inserm U1103, Clermont Université, F-63001 Clermont-Ferrand, France
| | - Thomas J Giordano
- Department of Pathology, University of Michigan Health System, Ann Arbor, MI 48109, USA
| | - Jérôme Bertherat
- Inserm U1016, CNRS UMR 8104, Université Paris Descartes, Institut Cochin, Paris, France
| | - Antoine Martinez
- CNRS, UMR6293, GReD, Inserm U1103, Clermont Université, F-63001 Clermont-Ferrand, France
| | - Pierre Val
- CNRS, UMR6293, GReD, Inserm U1103, Clermont Université, F-63001 Clermont-Ferrand, France
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80
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Odermatt A, Strajhar P, Engeli RT. Disruption of steroidogenesis: Cell models for mechanistic investigations and as screening tools. J Steroid Biochem Mol Biol 2016; 158:9-21. [PMID: 26807866 DOI: 10.1016/j.jsbmb.2016.01.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 12/31/2015] [Accepted: 01/20/2016] [Indexed: 02/03/2023]
Abstract
In the modern world, humans are exposed during their whole life to a large number of synthetic chemicals. Some of these chemicals have the potential to disrupt endocrine functions and contribute to the development and/or progression of major diseases. Every year approximately 1000 novel chemicals, used in industrial production, agriculture, consumer products or as pharmaceuticals, are reaching the market, often with limited safety assessment regarding potential endocrine activities. Steroids are essential endocrine hormones, and the importance of the steroidogenesis pathway as a target for endocrine disrupting chemicals (EDCs) has been recognized by leading scientists and authorities. Cell lines have a prominent role in the initial stages of toxicity assessment, i.e. for mechanistic investigations and for the medium to high throughput analysis of chemicals for potential steroidogenesis disrupting activities. Nevertheless, the users have to be aware of the limitations of the existing cell models in order to apply them properly, and there is a great demand for improved cell-based testing systems and protocols. This review intends to provide an overview of the available cell lines for studying effects of chemicals on gonadal and adrenal steroidogenesis, their use and limitations, as well as the need for future improvements of cell-based testing systems and protocols.
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Affiliation(s)
- Alex Odermatt
- Swiss Center for Human Toxicology and Division of Molecular and Systems Toxicology, Department of Pharmaceutical Sciences, Pharmacenter, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland.
| | - Petra Strajhar
- Swiss Center for Human Toxicology and Division of Molecular and Systems Toxicology, Department of Pharmaceutical Sciences, Pharmacenter, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Roger T Engeli
- Swiss Center for Human Toxicology and Division of Molecular and Systems Toxicology, Department of Pharmaceutical Sciences, Pharmacenter, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
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81
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Nanba K, Chen AX, Turcu AF, Rainey WE. H295R expression of melanocortin 2 receptor accessory protein results in ACTH responsiveness. J Mol Endocrinol 2016; 56:69-76. [PMID: 26576642 DOI: 10.1530/jme-15-0230] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/17/2015] [Indexed: 12/31/2022]
Abstract
The H295R adrenocortical cell line is widely used for molecular analysis of adrenal functions but is known to have only modest ACTH responsiveness. The lack of ACTH response was linked to a low expression of its receptor, melanocortin 2 receptor (MC2R). We hypothesized that increasing the MC2R accessory protein (MRAP), which is required to traffic MC2R from the endoplasmic reticulum to the cell surface, would increase ACTH responsiveness. Lentiviral particles containing human MRAP-open reading frame were generated and transduced in H295R cells. Using antibiotic resistance, 18 clones were isolated for characterization. The most ACTH-responsive steroidogenic clone, H295RA, was used for further experiments. Successful induction of MRAP and increased expression of MC2R in H295RA cells was confirmed by quantitative real-time RT-PCR and protein analysis. Treatment with ACTH significantly increased aldosterone, cortisol, and dehydroepiandrosterone production in H295RA cells. ACTH also significantly increased transcript levels for all of the steroidogenic enzymes required to produce aldosterone, cortisol, and dehydroepiandrosterone, as well as MC2R mRNA. Using liquid chromatography/tandem mass spectrometry, we further revealed that the main unconjugated steroids produced in H295RA cells were 11-deoxycortisol, cortisol, and androstenedione. Treatment of H295RA cells with ACTH also acutely increased cAMP production and cellular protein levels for total and phosphorylated steroidogenic acute regulatory protein. In summary, through genetic manipulation, we have developed an ACTH-responsive human adrenocortical cell line. The cell line will provide a powerful in vitro tool for molecular analysis of physiologic and pathologic conditions involving the hypothalamic-pituitary-adrenal axis.
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Affiliation(s)
- Kazutaka Nanba
- Departments of Molecular & Integrative Physiology and Internal MedicineUniversity of Michigan, 1150 West Medical Center Drive, Ann Arbor, Michigan 48109, USADivision of MetabolismEndocrinology, and Diabetes, University of Michigan, 1150 West Medical Center Drive, Ann Arbor, Michigan 48109, USA
| | - Andrew X Chen
- Departments of Molecular & Integrative Physiology and Internal MedicineUniversity of Michigan, 1150 West Medical Center Drive, Ann Arbor, Michigan 48109, USADivision of MetabolismEndocrinology, and Diabetes, University of Michigan, 1150 West Medical Center Drive, Ann Arbor, Michigan 48109, USA
| | - Adina F Turcu
- Departments of Molecular & Integrative Physiology and Internal MedicineUniversity of Michigan, 1150 West Medical Center Drive, Ann Arbor, Michigan 48109, USADivision of MetabolismEndocrinology, and Diabetes, University of Michigan, 1150 West Medical Center Drive, Ann Arbor, Michigan 48109, USA
| | - William E Rainey
- Departments of Molecular & Integrative Physiology and Internal MedicineUniversity of Michigan, 1150 West Medical Center Drive, Ann Arbor, Michigan 48109, USADivision of MetabolismEndocrinology, and Diabetes, University of Michigan, 1150 West Medical Center Drive, Ann Arbor, Michigan 48109, USA Departments of Molecular & Integrative Physiology and Internal MedicineUniversity of Michigan, 1150 West Medical Center Drive, Ann Arbor, Michigan 48109, USADivision of MetabolismEndocrinology, and Diabetes, University of Michigan, 1150 West Medical Center Drive, Ann Arbor, Michigan 48109, USA
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82
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Mangelis A, Dieterich P, Peitzsch M, Richter S, Jühlen R, Hübner A, Willenberg HS, Deussen A, Lenders JWM, Eisenhofer G. Computational analysis of liquid chromatography-tandem mass spectrometric steroid profiling in NCI H295R cells following angiotensin II, forskolin and abiraterone treatment. J Steroid Biochem Mol Biol 2016; 155:67-75. [PMID: 26435452 DOI: 10.1016/j.jsbmb.2015.09.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 09/24/2015] [Accepted: 09/28/2015] [Indexed: 01/03/2023]
Abstract
Adrenal steroid hormones, which regulate a plethora of physiological functions, are produced via tightly controlled pathways. Investigations of these pathways, based on experimental data, can be facilitated by computational modeling for calculations of metabolic rate alterations. We therefore used a model system, based on mass balance and mass reaction equations, to kinetically evaluate adrenal steroidogenesis in human adrenal cortex-derived NCI H295R cells. For this purpose a panel of 10 steroids was measured by liquid chromatographic-tandem mass spectrometry. Time-dependent changes in cell incubate concentrations of steroids - including cortisol, aldosterone, dehydroepiandrosterone and their precursors - were measured after incubation with angiotensin II, forskolin and abiraterone. Model parameters were estimated based on experimental data using weighted least square fitting. Time-dependent angiotensin II- and forskolin-induced changes were observed for incubate concentrations of precursor steroids with peaks that preceded maximal increases in aldosterone and cortisol. Inhibition of 17-alpha-hydroxylase/17,20-lyase with abiraterone resulted in increases in upstream precursor steroids and decreases in downstream products. Derived model parameters, including rate constants of enzymatic processes, appropriately quantified observed and expected changes in metabolic pathways at multiple conversion steps. Our data demonstrate limitations of single time point measurements and the importance of assessing pathway dynamics in studies of adrenal cortical cell line steroidogenesis. Our analysis provides a framework for evaluation of steroidogenesis in adrenal cortical cell culture systems and demonstrates that computational modeling-derived estimates of kinetic parameters are an effective tool for describing perturbations in associated metabolic pathways.
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Affiliation(s)
- Anastasios Mangelis
- Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany.
| | - Peter Dieterich
- Institute of Physiology, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Mirko Peitzsch
- Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Susan Richter
- Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Ramona Jühlen
- Department of Pediatrics, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Angela Hübner
- Department of Pediatrics, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Holger S Willenberg
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; Division of Endocrinology and Metabolism, Rostock University Medical Center, Ernst-Heydemann-Str. 6, 18057 Rostock, Germany
| | - Andreas Deussen
- Institute of Physiology, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Jacques W M Lenders
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; Department of General Internal Medicine, Radboud University Medical Center, Geert Grooteplein 8, 6525 Nijmegen, The Netherlands
| | - Graeme Eisenhofer
- Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; Department of Internal Medicine III, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
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83
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Lalli E, Sasano H. 5th International ACC Symposium: An Outlook to Current and Future Research on the Biology of Adrenocortical Carcinoma: Diagnostic and Therapeutic Applications. Discov Oncol 2015; 7:44-8. [PMID: 26666256 DOI: 10.1007/s12672-015-0240-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 12/01/2015] [Indexed: 12/27/2022] Open
Abstract
Groundbreaking progress has been recently made in elucidating the signaling pathways that are altered in adrenocortical carcinoma (ACC), an endocrine malignancy that still has an unfavorable prognosis, and in understanding its genomic structure. These advances need now to be translated to create cellular and animal models more relevant to human disease in order to develop new and more effective diagnostic procedures and targeted therapies against this deadly malignancy.
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Affiliation(s)
- Enzo Lalli
- Institut de Pharmacologie Moléculaire et Cellulaire CNRS, 660 route des Lucioles, 06560, Valbonne, France. .,NEOGENEX CNRS International Associated Laboratory, Valbonne, France. .,Université de Nice-Sophia Antipolis, Nice, France.
| | - Hironobu Sasano
- Department of Pathology, Tohoku University School of Medicine, 2-1 Seiryo-machi, Aoba-ku Sendai, 980-8575, Japan.
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84
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Cerny MA, Csengery A, Schmenk J, Frederick K. Development of CYP11B1 and CYP11B2 assays utilizing homogenates of adrenal glands: Utility of monkey as a surrogate for human. J Steroid Biochem Mol Biol 2015; 154:197-205. [PMID: 26303746 DOI: 10.1016/j.jsbmb.2015.08.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 08/03/2015] [Accepted: 08/05/2015] [Indexed: 01/04/2023]
Abstract
Elevated levels of aldosterone are associated with arterial hypertension, congestive heart failure, chronic kidney disease, and obesity. Aldosterone is produced predominantly in the zona glomerulosa of the cortex of the adrenal gland by the enzyme aldosterone synthase (CYP11B2). Treatment of the above indications by decreasing production of aldosterone is thought to be of therapeutic benefit by lessening the deleterious effects of aldosterone mediated through both the mineralocorticoid receptor and also through so called non-genomic pathways. However, inhibition of the highly similar enzyme, CYP11B1, which is responsible for the production of cortisol, must be avoided in the development of clinically useful aldosterone synthase inhibitors due to the resulting impairment of the cortisol-induced stress response. In efforts to assess the interactions of compounds with the CYP11B enzymes, a variety of cell-based inhibitor screening assays for both CYP11B1 and CYP11B2 have been reported. Herein we report details of assays employing both cynomolgus monkey adrenal homogenate (CAH) and human adrenal homogenate (HAH) as sources of CYP11B1 and CYP11B2 enzymes. Utilizing both CAH and HAH, we have characterized the kinetics of the CYP11B1-mediated conversion of 11-deoxycortisol to cortisol and the CYP11B2-mediated oxidation of corticosterone to aldosterone. Inhibition assays for both CYP11B1 and CYP11B2 were subsequently developed. Based on a comparison of human and monkey amino acid sequences, kinetics data, and inhibition values derived from the HAH and CAH assays, evidence is provided in support of using cynomolgus monkey tissue-derived cell homogenates as suitable surrogates for the human enzymes.
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Affiliation(s)
- Matthew A Cerny
- Boehringer Ingelheim Pharmaceuticals, Inc., Department of Medicinal Chemistry, Drug Discovery Support (DMPK), USA.
| | - Alexander Csengery
- Boehringer Ingelheim Pharmaceuticals, Inc., Department of Medicinal Chemistry, Drug Discovery Support (DMPK), USA
| | - Jennifer Schmenk
- Boehringer Ingelheim Pharmaceuticals, Inc., Department of Medicinal Chemistry, Drug Discovery Support (DMPK), USA
| | - Kosea Frederick
- Boehringer Ingelheim Pharmaceuticals, Inc., Department of Medicinal Chemistry, Drug Discovery Support (DMPK), USA
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85
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Bloem LM, Storbeck KH, Swart P, du Toit T, Schloms L, Swart AC. Advances in the analytical methodologies: Profiling steroids in familiar pathways-challenging dogmas. J Steroid Biochem Mol Biol 2015; 153:80-92. [PMID: 25869556 DOI: 10.1016/j.jsbmb.2015.04.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 03/30/2015] [Accepted: 04/08/2015] [Indexed: 02/06/2023]
Abstract
The comprehensive evaluation of the adrenal steroidogenic pathway, given its complexity, requires methodology beyond the standard techniques currently employed. Advances in LC-MS/MS, coupled with in vitro cell models that produce all the steroid metabolites of the mineralo-, glucocorticoid and androgen arms, present a powerful approach for the comprehensive evaluation of adrenal steroidogenesis in response to compounds of interest including bioactives, drug treatments and endocrine disrupting compounds. UHPLC-MS/MS analysis of steroid panels in forskolin, angiotensin II and K(+) stimulated H295R cells provides a snapshot of their effect on intermediates and end products of adrenal steroidogenesis. The impact of full steroid panel evaluations by LC- and GC-MS/MS extends to clinical profiling with the characterization of normal pediatric steroid reference ranges in sexual development and of disease-specific profiles improving diagnosis and sub classification. Comprehensive analyses of steroid profiles may potentially improve patient outcomes together with the application of treatments specifically suited to clinical subgroups. LC-MS/MS and GC-MS/MS applications in the analyses of comprehensive steroid panels are demonstrated in clinical conditions such as congenital adrenal hyperplasia in newborns requiring accurate diagnoses and in predicting metabolic risk in polycystic ovary syndrome patients. Most notable perhaps is the impact of LC-MS/MS evaluations on our understanding of the basic biochemistry of steroidogenesis with the detection of the long forgotten adrenal steroid, 11β-hydroxyandrostenedione, at significant levels. The characterization of its metabolism to androgen receptor ligands in the LNCaP prostate cancel cell model, specifically within the context of recurring prostate cancer, lends new perspectives to old dogmas. We demonstrate that UHPLC-MS/MS has enabled the analyses of novel metabolites of the enzymes, SRD5A, 11βHSD and 17βHSD, in LNCaP cells. Undoubtedly, the continuous advances in the analytical methodologies used for steroid profiling and quantification will give impetus to the unraveling of the remaining enigmas, old and new, of both hormone biosynthesis and metabolism.
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Affiliation(s)
- Liezl M Bloem
- Department of Biochemistry, University of Stellenbosch, Stellenbosch 7600, South Africa
| | - Karl-Heinz Storbeck
- Department of Biochemistry, University of Stellenbosch, Stellenbosch 7600, South Africa
| | - Pieter Swart
- Department of Biochemistry, University of Stellenbosch, Stellenbosch 7600, South Africa
| | - Therina du Toit
- Department of Biochemistry, University of Stellenbosch, Stellenbosch 7600, South Africa
| | - Lindie Schloms
- Department of Biochemistry, University of Stellenbosch, Stellenbosch 7600, South Africa
| | - Amanda C Swart
- Department of Biochemistry, University of Stellenbosch, Stellenbosch 7600, South Africa.
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86
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Nakamura Y, Yamazaki Y, Konosu-Fukaya S, Ise K, Satoh F, Sasano H. Aldosterone biosynthesis in the human adrenal cortex and associated disorders. J Steroid Biochem Mol Biol 2015; 153:57-62. [PMID: 26051166 DOI: 10.1016/j.jsbmb.2015.05.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 05/15/2015] [Accepted: 05/16/2015] [Indexed: 10/23/2022]
Abstract
Aldosterone is one of the mineralocorticoids synthesized and secreted by the adrenal glands, and it plays pivotal roles in regulating extracellular fluid volume and blood pressure. Autonomous excessive aldosterone secretion resulting from adrenocortical diseases is known as primary aldosteronism, and it constitutes one of the most frequent causes of secondary hypertension. Therefore, it is important to understand the molecular mechanisms of aldosterone synthesis in both normal and pathological adrenal tissues. Various factors have been suggested to be involved in regulation of aldosterone biosynthesis, and several adrenocortical cell lines have been developed for use as in vitro models of adrenal aldosterone-producing cells, for analysis of the underlying molecular mechanisms. In this review, we summarize the available reports on the regulation of aldosterone biosynthesis in the normal adrenal cortex, in associated disorders, and in in vitro models.
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Affiliation(s)
- Yasuhiro Nakamura
- Department of Pathology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Yuto Yamazaki
- Department of Pathology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Sachiko Konosu-Fukaya
- Department of Pathology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Kazue Ise
- Department of Pathology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Fumitoshi Satoh
- Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Hironobu Sasano
- Department of Pathology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan.
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87
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Jeanneret F, Tonoli D, Rossier MF, Saugy M, Boccard J, Rudaz S. Evaluation of steroidomics by liquid chromatography hyphenated to mass spectrometry as a powerful analytical strategy for measuring human steroid perturbations. J Chromatogr A 2015. [PMID: 26195035 DOI: 10.1016/j.chroma.2015.07.008] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
This review presents the evolution of steroid analytical techniques, including gas chromatography coupled to mass spectrometry (GC-MS), immunoassay (IA) and targeted liquid chromatography coupled to mass spectrometry (LC-MS), and it evaluates the potential of extended steroid profiles by a metabolomics-based approach, namely steroidomics. Steroids regulate essential biological functions including growth and reproduction, and perturbations of the steroid homeostasis can generate serious physiological issues; therefore, specific and sensitive methods have been developed to measure steroid concentrations. GC-MS measuring several steroids simultaneously was considered the first historical standard method for analysis. Steroids were then quantified by immunoassay, allowing a higher throughput; however, major drawbacks included the measurement of a single compound instead of a panel and cross-reactivity reactions. Targeted LC-MS methods with selected reaction monitoring (SRM) were then introduced for quantifying a small steroid subset without the problems of cross-reactivity. The next step was the integration of metabolomic approaches in the context of steroid analyses. As metabolomics tends to identify and quantify all the metabolites (i.e., the metabolome) in a specific system, appropriate strategies were proposed for discovering new biomarkers. Steroidomics, defined as the untargeted analysis of the steroid content in a sample, was implemented in several fields, including doping analysis, clinical studies, in vivo or in vitro toxicology assays, and more. This review discusses the current analytical methods for assessing steroid changes and compares them to steroidomics. Steroids, their pathways, their implications in diseases and the biological matrices in which they are analysed will first be described. Then, the different analytical strategies will be presented with a focus on their ability to obtain relevant information on the steroid pattern. The future technical requirements for improving steroid analysis will also be presented.
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Affiliation(s)
- Fabienne Jeanneret
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, 1211 Geneva 4, Switzerland; Human Protein Sciences Department, University of Geneva, 1211 Geneva 4, Switzerland; Swiss Centre for Applied Human Toxicology, Geneva, Switzerland
| | - David Tonoli
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, 1211 Geneva 4, Switzerland; Human Protein Sciences Department, University of Geneva, 1211 Geneva 4, Switzerland; Swiss Centre for Applied Human Toxicology, Geneva, Switzerland
| | - Michel F Rossier
- Swiss Centre for Applied Human Toxicology, Geneva, Switzerland; Institut Central (ICHV), Hôpital du Valais, Sion, Switzerland
| | - Martial Saugy
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Epalinges, Switzerland
| | - Julien Boccard
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, 1211 Geneva 4, Switzerland
| | - Serge Rudaz
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, 1211 Geneva 4, Switzerland; Swiss Centre for Applied Human Toxicology, Geneva, Switzerland.
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88
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Kempná P, Marti N, Udhane S, Flück CE. Regulation of androgen biosynthesis - A short review and preliminary results from the hyperandrogenic starvation NCI-H295R cell model. Mol Cell Endocrinol 2015; 408:124-32. [PMID: 25543021 DOI: 10.1016/j.mce.2014.12.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 12/17/2014] [Accepted: 12/18/2014] [Indexed: 01/20/2023]
Abstract
Regulation of androgen production is poorly understood. Adrenarche is the physiologic event in mid-childhood when the adrenal zona reticularis starts to produce androgens through specific expression of genes for enzymes and cofactors necessary for androgen synthesis. Similarly, expression and activities of same genes and products are deregulated in hyperandrogenic disorders such as the polycystic ovary syndrome (PCOS). Numerous studies revealed involvement of several signaling pathways stimulated through G-protein coupled receptors or growth factors transmitting their effects through cAMP- or non-cAMP-dependent signaling. Overall a complex network regulates androgen synthesis targeting involved genes and proteins at the transcriptional and post-translational levels. Newest players in the field are the DENND1A gene identified in PCOS patients and the MAPK14 which is the kinase phosphorylating CYP17 for enhanced lyase activity. Next generation sequencing studies of PCOS patients and transcriptome analysis of androgen producing tissues or cell models provide newer tools to identify modulators of androgen synthesis.
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Affiliation(s)
- Petra Kempná
- Department of Pediatrics, Division of Pediatric Endocrinology, Diabetology and Metabolism, and Department of Clinical Research, Inselspital, University Hospital, University of Bern, 3010 Bern, Switzerland
| | - Nesa Marti
- Department of Pediatrics, Division of Pediatric Endocrinology, Diabetology and Metabolism, and Department of Clinical Research, Inselspital, University Hospital, University of Bern, 3010 Bern, Switzerland
| | - Sameer Udhane
- Department of Pediatrics, Division of Pediatric Endocrinology, Diabetology and Metabolism, and Department of Clinical Research, Inselspital, University Hospital, University of Bern, 3010 Bern, Switzerland
| | - Christa E Flück
- Department of Pediatrics, Division of Pediatric Endocrinology, Diabetology and Metabolism, and Department of Clinical Research, Inselspital, University Hospital, University of Bern, 3010 Bern, Switzerland.
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89
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Seremwe M, Schnellmann RG, Bollag WB. Calpain-10 Activity Underlies Angiotensin II-Induced Aldosterone Production in an Adrenal Glomerulosa Cell Model. Endocrinology 2015; 156:2138-49. [PMID: 25836666 PMCID: PMC4430612 DOI: 10.1210/en.2014-1866] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Aldosterone is a steroid hormone important in the regulation of blood pressure. Aberrant production of aldosterone results in the development and progression of diseases including hypertension and congestive heart failure; therefore, a complete understanding of aldosterone production is important for developing more effective treatments. Angiotensin II (AngII) regulates steroidogenesis, in part through its ability to increase intracellular calcium levels. Calcium can activate calpains, proteases classified as typical or atypical based on the presence or absence of penta-EF-hands, which are involved in various cellular responses. We hypothesized that calpain, in particular calpain-10, is activated by AngII in adrenal glomerulosa cells and underlies aldosterone production. Our studies showed that pan-calpain inhibitors reduced AngII-induced aldosterone production in 2 adrenal glomerulosa cell models, primary bovine zona glomerulosa and human adrenocortical carcinoma (HAC15) cells, as well as CYP11B2 expression in the HAC15 cells. Although AngII induced calpain activation in these cells, typical calpain inhibitors had no effect on AngII-elicited aldosterone production, suggesting a lack of involvement of classical calpains in this process. However, an inhibitor of the atypical calpain, calpain-10, decreased AngII-induced aldosterone production. Consistent with this result, small interfering RNA (siRNA)-mediated knockdown of calpain-10 inhibited aldosterone production and CYP11B2 expression, whereas adenovirus-mediated overexpression of calpain-10 resulted in increased AngII-induced aldosterone production. Our results indicate that AngII-induced activation of calpain-10 in glomerulosa cells underlies aldosterone production and identify calpain-10 or its downstream pathways as potential targets for the development of drug therapies for the treatment of hypertension.
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Affiliation(s)
- Mutsa Seremwe
- Charlie Norwood Veterans Administration Medical Center (W.B.B.), Augusta, Georgia 30904; Department of Physiology (M.S., W.B.B.) and Section of Dermatology (W.B.B.), Department of Medicine, Georgia Regents University, Augusta, Georgia 30912; and Department of Drug Discovery and Biomedical Sciences (R.G.S.), Medical University of South Carolina, and Ralph H. Johnson VA Medical Center (R.G.S.), Charleston, South Carolina 29425
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90
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Tonoli D, Fürstenberger C, Boccard J, Hochstrasser D, Jeanneret F, Odermatt A, Rudaz S. Steroidomic Footprinting Based on Ultra-High Performance Liquid Chromatography Coupled with Qualitative and Quantitative High-Resolution Mass Spectrometry for the Evaluation of Endocrine Disrupting Chemicals in H295R Cells. Chem Res Toxicol 2015; 28:955-66. [DOI: 10.1021/tx5005369] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- David Tonoli
- School
of Pharmaceutical Sciences, University of Geneva and University of Lausanne, Geneva, Switzerland
- Department
of Human Protein Sciences, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Swiss
Centre for Applied Human Toxicology (SCAHT), Universities of Basel and Geneva, Basel, Switzerland
| | - Cornelia Fürstenberger
- Swiss
Centre for Applied Human Toxicology (SCAHT), Universities of Basel and Geneva, Basel, Switzerland
- Division
of Molecular and Systems Toxicology, Department of Pharmaceutical
Sciences, University of Basel, Basel, Switzerland
| | - Julien Boccard
- School
of Pharmaceutical Sciences, University of Geneva and University of Lausanne, Geneva, Switzerland
| | - Denis Hochstrasser
- Department
of Genetic and Laboratory Medicine, Geneva University Hospitals, Geneva, Switzerland
| | - Fabienne Jeanneret
- School
of Pharmaceutical Sciences, University of Geneva and University of Lausanne, Geneva, Switzerland
- Department
of Human Protein Sciences, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Swiss
Centre for Applied Human Toxicology (SCAHT), Universities of Basel and Geneva, Basel, Switzerland
| | - Alex Odermatt
- Swiss
Centre for Applied Human Toxicology (SCAHT), Universities of Basel and Geneva, Basel, Switzerland
- Division
of Molecular and Systems Toxicology, Department of Pharmaceutical
Sciences, University of Basel, Basel, Switzerland
| | - Serge Rudaz
- School
of Pharmaceutical Sciences, University of Geneva and University of Lausanne, Geneva, Switzerland
- Swiss
Centre for Applied Human Toxicology (SCAHT), Universities of Basel and Geneva, Basel, Switzerland
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91
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Cerquetti L, Sampaoli C, De Salvo M, Bucci B, Argese N, Chimento A, Vottari S, Marchese R, Pezzi V, Toscano V, Stigliano A. C-MYC modulation induces responsiveness to paclitaxel in adrenocortical cancer cell lines. Int J Oncol 2015; 46:2231-40. [PMID: 25708932 DOI: 10.3892/ijo.2015.2902] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 12/23/2014] [Indexed: 11/06/2022] Open
Abstract
C-MYC is overexpressed in many types of cancer linked to poor prognosis. We examined the c-Myc protein expression in adrenocortical cancer (ACC) cells to investigate the role of this protein in the neoplasm, its involvement in chemotherapy and finally to determine whether c-Myc could be considered a prognostic factor in patients with ACC. H295R and SW13 cell lines were treated with paclitaxel. c-Myc overexpressing cell clones were achieved by transfecting the H295R cell line with the pcDNA3-hMYC plasmid expressing the full-lengh C-MYC coding sequence. The SW13 cell line was transfected with siRNA oligonucleotides for C-MYC. Cell cycle analysis was evaluated by flow cytometry. c-Myc, cyclin B1 and pro caspase expression levels were evaluated by western blot analysis. We found that expression of c-Myc was highly expressed in the SW13 cells, whereas the protein was undetectable in the H295R cells. Different doses of paclitaxel were required in the two ACC cell line to induce a block in the G2 phase, characterized by increased cyclin B1 levels and to induce apoptosis by pro-caspase-3 activation. Interestingly, the silencing of C-MYC mRNA prevented paclitaxel induced apoptosis in SW13 cells, whereas in the H295R cells the overexpression of C-MYC rendered the cells more prone to growth inhibition after paclitaxel exposure. The present study directly demonstrates that C-MYC plays a central role in controlling proliferation in ACC cells after paclitaxel treatment and that c-Myc could be considered as a marker for predicting response to chemotherapeutic agents in ACC cell lines.
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Affiliation(s)
- Lidia Cerquetti
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, 'Sapienza' University of Rome, Rome, Italy
| | - Camilla Sampaoli
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, 'Sapienza' University of Rome, Rome, Italy
| | | | | | - Nicola Argese
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, 'Sapienza' University of Rome, Rome, Italy
| | - Adele Chimento
- Department of Pharmacy, University of Calabria, Cosenza, Italy
| | - Sebastiano Vottari
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, 'Sapienza' University of Rome, Rome, Italy
| | | | - Vincenzo Pezzi
- Department of Pharmacy, University of Calabria, Cosenza, Italy
| | - Vincenzo Toscano
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, 'Sapienza' University of Rome, Rome, Italy
| | - Antonio Stigliano
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology, 'Sapienza' University of Rome, Rome, Italy
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92
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Abstract
Aldosterone is a steroid hormone synthesized in and secreted from the outer layer of the adrenal cortex, the zona glomerulosa. Aldosterone is responsible for regulating sodium homeostasis, thereby helping to control blood volume and blood pressure. Insufficient aldosterone secretion can lead to hypotension and circulatory shock, particularly in infancy. On the other hand, excessive aldosterone levels, or those too high for sodium status, can cause hypertension and exacerbate the effects of high blood pressure on multiple organs, contributing to renal disease, stroke, visual loss, and congestive heart failure. Aldosterone is also thought to directly induce end-organ damage, including in the kidneys and heart. Because of the significance of aldosterone to the physiology and pathophysiology of the cardiovascular system, it is important to understand the regulation of its biosynthesis and secretion from the adrenal cortex. Herein, the mechanisms regulating aldosterone production in zona glomerulosa cells are discussed, with a particular emphasis on signaling pathways involved in the secretory response to the main controllers of aldosterone production, the renin-angiotensin II system, serum potassium levels and adrenocorticotrophic hormone. The signaling pathways involved include phospholipase C-mediated phosphoinositide hydrolysis, inositol 1,4,5-trisphosphate, cytosolic calcium levels, calcium influx pathways, calcium/calmodulin-dependent protein kinases, diacylglycerol, protein kinases C and D, 12-hydroxyeicostetraenoic acid, phospholipase D, mitogen-activated protein kinase pathways, tyrosine kinases, adenylate cyclase, and cAMP-dependent protein kinase. A complete understanding of the signaling events regulating aldosterone biosynthesis may allow the identification of novel targets for therapeutic interventions in hypertension, primary aldosteronism, congestive heart failure, renal disease, and other cardiovascular disorders.
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Affiliation(s)
- Wendy B Bollag
- Charlie Norwood VA Medical Center, Augusta, Georgia; Department of Physiology, Medical College of Georgia at Georgia Regents University, Augusta, Georgia
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93
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Pilon C, Rebellato A, Urbanet R, Guzzardo V, Cappellesso R, Sasano H, Fassina A, Fallo F. Methylation Status of Vitamin D Receptor Gene Promoter in Benign and Malignant Adrenal Tumors. Int J Endocrinol 2015; 2015:375349. [PMID: 26843863 PMCID: PMC4710947 DOI: 10.1155/2015/375349] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 12/10/2015] [Indexed: 01/04/2023] Open
Abstract
We previously showed a decreased expression of vitamin D receptor (VDR) mRNA/protein in a small group of adrenocortical carcinoma (ACC) tissues, suggesting the loss of a protective role of VDR against malignant cell growth in this cancer type. Downregulation of VDR gene expression may result from epigenetics events, that is, methylation of cytosine nucleotide of CpG islands in VDR gene promoter. We analyzed methylation of CpG sites in the VDR gene promoter in normal adrenals and adrenocortical tumor samples. Methylation of CpG-rich 5' regions was assessed by bisulfite sequencing PCR using bisulfite-treated DNA from archival microdissected paraffin-embedded adrenocortical tissues. Three normal adrenals and 23 various adrenocortical tumor samples (15 adenomas and 8 carcinomas) were studied. Methylation in the promoter region of VDR gene was found in 3/8 ACCs, while no VDR gene methylation was observed in normal adrenals and adrenocortical adenomas. VDR mRNA and protein levels were lower in ACCs than in benign tumors, and VDR immunostaining was weak or negative in ACCs, including all 3 methylated tissue samples. The association between VDR gene promoter methylation and reduced VDR gene expression is not a rare event in ACC, suggesting that VDR epigenetic inactivation may have a role in adrenocortical carcinogenesis.
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Affiliation(s)
- Catia Pilon
- Clinica Medica 3, Department of Medicine-DIMED, University of Padova, 35128 Padova, Italy
| | - Andrea Rebellato
- Clinica Medica 3, Department of Medicine-DIMED, University of Padova, 35128 Padova, Italy
| | - Riccardo Urbanet
- Clinica Medica 3, Department of Medicine-DIMED, University of Padova, 35128 Padova, Italy
| | - Vincenza Guzzardo
- Cytopathology Unit, Department of Medicine-DIMED, University of Padova, 35128 Padova, Italy
| | - Rocco Cappellesso
- Cytopathology Unit, Department of Medicine-DIMED, University of Padova, 35128 Padova, Italy
| | - Hironobu Sasano
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Ambrogio Fassina
- Cytopathology Unit, Department of Medicine-DIMED, University of Padova, 35128 Padova, Italy
| | - Francesco Fallo
- Clinica Medica 3, Department of Medicine-DIMED, University of Padova, 35128 Padova, Italy
- *Francesco Fallo:
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94
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Yarimizu D, Doi M, Ota T, Okamura H. Stimulus-selective induction of the orphan nuclear receptor NGFIB underlies different influences of angiotensin II and potassium on the human adrenal gland zona glomerulosa-specific 3β-HSD isoform gene expression in adrenocortical H295R cells. Endocr J 2015; 62:765-76. [PMID: 26096451 DOI: 10.1507/endocrj.ej15-0211] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
In the adrenal, the type I 3β-hydroxysteroid dehydrogenase (HSD3B1) is expressed exclusively in the zona glomerulosa (ZG), where aldosterone is produced. Angiotensin II (AngII) and potassium (K(+)) are the major physiological regulators of aldosterone synthesis. However, their respective roles in regulation of aldosterone synthesis are not fully defined, particularly in terms of transcriptional regulation of steroidogenic enzyme genes. We previously showed that AngII can stimulate expression of HSD3B1. But, K(+) responsiveness of this gene has remained unexplored. Here, we report that K(+) stimulation lacks the ability to induce HSD3B1 expression in human adrenocortical H295R cells. Both AngII and K(+) were able to enhance transcription of the aldosterone synthase gene (CYP11B2). Promoter analysis revealed that although both AngII and K(+) activate transcription from the Ca(2+)/cAMP-responsive element (CRE) located in the CYP11B2 promoter, the orphan nuclear receptor NGFIB-responsive element (NBRE) located in the HSD3B1 promoter fails to respond to K(+), being only able to enhance transcription after AngII treatment. We found that induction of de novo protein synthesis of NGFIB occurs only after AngII treatment. This sharply contrasts with the phosphorylation that occurs in response to both AngII and K(+) on the CREB/ATF family transcription factor ATF2. Chromatin immunoprecipitation assay confirmed that the NGFIB protein occupies the HSD3B1 promoter only after AngII, while ATF2 binds to the CYP11B2 promoter in response to both AngII and K(+). These data provide evidence that downstream signals from AngII and K(+) can be uncoupled in the regulation of HSD3B1 in the human adrenocortical H295R cells.
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Affiliation(s)
- Daisuke Yarimizu
- Department of Systems Biology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8051, Japan
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95
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Tsai YY, Rainey WE, Pan ZQ, Frohman MA, Choudhary V, Bollag WB. Phospholipase D activity underlies very-low-density lipoprotein (VLDL)-induced aldosterone production in adrenal glomerulosa cells. Endocrinology 2014; 155:3550-60. [PMID: 24956203 DOI: 10.1210/en.2014-1159] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Aldosterone is the mineralocorticoid responsible for sodium retention, thus increased blood volume and pressure. Excessive production of aldosterone results in high blood pressure as well as renal disease, stroke, and visual loss via both direct effects and effects on blood pressure. Weight gain is often associated with increased blood pressure, but it remains unclear how obesity increases blood pressure. Obese patients typically have higher lipoprotein levels; moreover, some studies have suggested that aldosterone levels are also elevated and represent a link between obesity and hypertension. Very-low-density lipoprotein (VLDL) functions to transport triglycerides from the liver to peripheral tissues. Although previous studies have demonstrated that VLDL can stimulate aldosterone production, the mechanisms underlying this effect are largely unclear. Here we show for the first time that phospholipase D (PLD) is involved in VLDL-induced aldosterone production in both a human adrenocortical cell line (HAC15) and primary cultures of bovine zona glomerulosa cells. Our data also reveal that PLD mediates steroidogenic acute regulatory (StAR) protein and aldosterone synthase (CYP11B2) expression via increasing the phosphorylation (activation) of their regulatory transcription factors. Finally, by using selective PLD inhibitors, our studies suggest that both PLD1 and PLD2 isoforms play an important role in VLDL-induced aldosterone production.
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Affiliation(s)
- Ying-Ying Tsai
- Charlie Norwood VA Medical Center (V.C., W.B.B.), Augusta, Georgia 30904; Department of Physiology (Y.-Y.T., W.E.R., Z.P., V.C., W.B.B.), Medical College of Georgia at Georgia Regents University, Augusta, Georgia 30912; and Department of Pharmacology and Center for Developmental Genetics (M.A.F.), Stony Brook University, Stony Brook, New York 11794
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96
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Pan ZQ, Xie D, Choudhary V, Seremwe M, Tsai YY, Olala L, Chen X, Bollag WB. The effect of pioglitazone on aldosterone and cortisol production in HAC15 human adrenocortical carcinoma cells. Mol Cell Endocrinol 2014; 394:119-28. [PMID: 25038520 PMCID: PMC4237224 DOI: 10.1016/j.mce.2014.07.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 06/16/2014] [Accepted: 07/08/2014] [Indexed: 01/27/2023]
Abstract
Pioglitazone belongs to the class of drugs called thiazolidinediones (TZDs), which are widely used as insulin sensitizers in the treatment of diabetes. A major side effect of TZDs is fluid retention. The steroid hormone aldosterone also promotes sodium and fluid retention; however, the effect of pioglitazone on aldosterone production is controversial. We analyzed the effect of pioglitazone alone and in combination with angiotensin II (AngII) on the late rate-limiting step of adrenocortical steroidogenesis in human adrenocortical carcinoma HAC15 cells. Treatment with pioglitazone for 24 h significantly increased the expression of CYP11B2 and enhanced AngII-induced CYP11B2 expression. Despite the observed changes in mRNA levels, pioglitazone significantly inhibited AngII-induced aldosterone production and CYP11B2 protein levels. On the other hand, pioglitazone stimulated the expression of the unfolded protein response (UPR) marker DDIT3, with this effect occurring at early times and inhibitable by the PPARγ antagonist GW9962. The levels of DDIT3 (CHOP) and phospho-eIF2α (Ser51), a UPR-induced event that inhibits protein translation, were also increased. Thus, pioglitazone promotes CYP11B2 expression but nevertheless inhibits aldosterone production in AngII-treated HAC15 cells, likely by blocking global protein translation initiation through DDIT3 and phospho-eIF2α. In contrast, pioglitazone promoted AngII-induced CYP11B1 expression and cortisol production. Since cortisol enhances lipolysis, this result suggests the possibility that PPARs, activated by products of fatty acid oxidation, stimulate cortisol secretion to promote utilization of fatty acids during fasting. In turn, the ability of pioglitazone to stimulate cortisol production could potentially underlie the effects of this drug on fluid retention.
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Affiliation(s)
- Zhi-qiang Pan
- Department of Physiology, Georgia Regents University (Medical College of Georgia), 1120 15th Street, Augusta, GA 30912, USA; School of Basic Medical Science, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Ding Xie
- Charlie Norwood VA Medical Center, One Freedom Way, Augusta, GA 30904, USA; Department of Physiology, Georgia Regents University (Medical College of Georgia), 1120 15th Street, Augusta, GA 30912, USA
| | - Vivek Choudhary
- Charlie Norwood VA Medical Center, One Freedom Way, Augusta, GA 30904, USA; Department of Physiology, Georgia Regents University (Medical College of Georgia), 1120 15th Street, Augusta, GA 30912, USA
| | - Mutsa Seremwe
- Department of Physiology, Georgia Regents University (Medical College of Georgia), 1120 15th Street, Augusta, GA 30912, USA
| | - Ying-Ying Tsai
- Department of Physiology, Georgia Regents University (Medical College of Georgia), 1120 15th Street, Augusta, GA 30912, USA
| | - Lawrence Olala
- Charlie Norwood VA Medical Center, One Freedom Way, Augusta, GA 30904, USA; Department of Physiology, Georgia Regents University (Medical College of Georgia), 1120 15th Street, Augusta, GA 30912, USA
| | - Xunsheng Chen
- Charlie Norwood VA Medical Center, One Freedom Way, Augusta, GA 30904, USA; Department of Physiology, Georgia Regents University (Medical College of Georgia), 1120 15th Street, Augusta, GA 30912, USA
| | - Wendy B Bollag
- Charlie Norwood VA Medical Center, One Freedom Way, Augusta, GA 30904, USA; Department of Physiology, Georgia Regents University (Medical College of Georgia), 1120 15th Street, Augusta, GA 30912, USA.
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97
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Nishimoto K, Harris RBS, Rainey WE, Seki T. Sodium deficiency regulates rat adrenal zona glomerulosa gene expression. Endocrinology 2014; 155:1363-72. [PMID: 24422541 PMCID: PMC3959598 DOI: 10.1210/en.2013-1999] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Aldosterone is the primary adrenocortical hormone regulating sodium retention, and its production is under the control of the renin-angiotensin-aldosterone system (RAAS). In vitro, angiotensin II can induce aldosterone production in adrenocortical cells without causing cell proliferation. In vivo, a low-sodium diet activates the RAAS and aldosterone production, at least in part, through an expansion of the adrenal zona glomerulosa (zG) layer. Although these mechanisms have been investigated, RAAS effects on zG gene expression have not been fully elucidated. In this study, we took an unbiased approach to define the complete list of zG transcripts involved in RAAS activation. Adrenal glands were collected from 11-week old Sprague-Dawley rats fed either sodium-deficient (SDef), normal sodium (NS), or high-sodium (HS) diet for 72 hours, and laser-captured zG RNA was analyzed on microarrays containing 27 342 probe sets. When the SDef transcriptome was compared with NS transcriptome (SDef/NS comparison), only 79 and 10 probe sets were found to be up- and down-regulated more than two-fold in SDef, respectively. In SDef/HS comparison, 201 and 68 probe sets were up- and down-regulated in SDef, respectively. Upon gene ontology (GO) analysis of these gene sets, we identified three groups of functionally related GO terms: cell proliferation-associated (group 1), response to stimulus-associated (group 2), and cholesterol/steroid metabolism-associated (group 3) GO terms. Although genes in group 1 may play a critical role in zG layer expansion, those in groups 2 and 3 may have important functions in aldosterone production, and further investigations on these genes are warranted.
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Affiliation(s)
- Koshiro Nishimoto
- Department of Molecular and Integrative Physiology (K.N., W.E.R.), University of Michigan, Ann Arbor, Michigan 48109; Department of Physiology (R.B.S.H., T.S.), Georgia Regents University, Augusta, Georgia 30912; and Department of Urology (K.N.), Tachikawa Hospital, Tachikawa, 190-0022 Tokyo, Japan
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98
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Gomez-Sanchez CE, Qi X, Velarde-Miranda C, Plonczynski MW, Parker CR, Rainey W, Satoh F, Maekawa T, Nakamura Y, Sasano H, Gomez-Sanchez EP. Development of monoclonal antibodies against human CYP11B1 and CYP11B2. Mol Cell Endocrinol 2014; 383:111-7. [PMID: 24325867 PMCID: PMC3939805 DOI: 10.1016/j.mce.2013.11.022] [Citation(s) in RCA: 209] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 11/26/2013] [Accepted: 11/29/2013] [Indexed: 01/27/2023]
Abstract
1. The final enzymes in the biosynthesis of aldosterone and cortisol are by the cytochrome P450 CYP11B2 and CYP11B1, respectively. The enzymes are 93% homologous at the amino acid level and specific antibodies have been difficult to generate. 2. Mice and rats were immunized with multiple peptides conjugated to various immunogenic proteins and monoclonal antibodies were generated. The only peptide sequences that generated specific antibodies were amino acids 41-52 for the CYP11B2 and amino acids 80-90 for the CYP11B1 enzyme. 3. The mouse monoclonal CYP11B2-41 was specific and sensitive for use in western blots and produced specific staining of the zona glomerulosa of normal adrenal glands. The rat monoclonal CYP11B1-80 also detected a single band by western blot and detected only the zona fasciculata. Triple immunofluorescence of the adrenal demonstrated that the CYP11B1 and the CYP11B2 did not co-localize, while as expected the CYP11B1 co-localized with the 17α-hydroxylase.
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Affiliation(s)
- Celso E Gomez-Sanchez
- Endocrine Section, G.V. (Sonny) Montgomery VA Medical Center, USA; Endocrinology, University of Mississippi Medical Center, USA.
| | - Xin Qi
- Endocrinology, University of Mississippi Medical Center, USA
| | | | | | - C Richard Parker
- Department of Obstetrics and Gynecology, University of Alabama, Birmingham, AL, USA
| | - William Rainey
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Fumitoshi Satoh
- Tohoku University, Department of Pathology, Tohoku University, Sendai, Japan
| | - Takashi Maekawa
- Tohoku University, Department of Pathology, Tohoku University, Sendai, Japan
| | - Yasuhiro Nakamura
- Tohoku University, Department of Pathology, Tohoku University, Sendai, Japan
| | - Hironobu Sasano
- Tohoku University, Department of Pathology, Tohoku University, Sendai, Japan
| | - Elise P Gomez-Sanchez
- Endocrine Section, G.V. (Sonny) Montgomery VA Medical Center, USA; Endocrinology, University of Mississippi Medical Center, USA; Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS, USA
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99
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Pilon C, Urbanet R, Williams TA, Maekawa T, Vettore S, Sirianni R, Pezzi V, Mulatero P, Fassina A, Sasano H, Fallo F. 1α,25-Dihydroxyvitamin D₃ inhibits the human H295R cell proliferation by cell cycle arrest: a model for a protective role of vitamin D receptor against adrenocortical cancer. J Steroid Biochem Mol Biol 2014; 140:26-33. [PMID: 24269839 DOI: 10.1016/j.jsbmb.2013.11.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 10/28/2013] [Accepted: 11/07/2013] [Indexed: 01/07/2023]
Abstract
UNLABELLED Using the human H295R adrenocortical carcinoma cell line as a model, we analyzed the role of 1α,25-dihydroxyvitamin D₃ [1α,25(OH)₂D₃)]--vitamin D receptor (VDR) axis in the growth of adrenocortical cancer (ACC). The presence of VDR in various adrenocortical tissues, including ACC, was also investigated. DNA synthesis was evaluated by [³H]thymidine cell incorporation after treatment with 1α,25(OH)₂D₃ at increasing doses. The effect of 1α,25(OH)₂D₃ on cell cycle and apoptosis was analyzed with a flow cytometer. Cyclin-dependent kinase 4 (CDK4) expression, a molecular marker of G1-S cell cycle transition phase, was evaluated in cells treated with 1α,25(OH)₂D₃ before and after VDR gene silencing. 1α,25(OH)₂D₃ treatment inhibited cell proliferation by 20% at a dose of 1 nM, in parallel with steroid secretion decrease. A cell cycle arrest in G1, with no change in apoptotic cell proportion, was observed after 10 nM 1α,25(OH)₂D₃ cell exposure. CDK4 activation was reduced by 10 nM 1α,25(OH)₂D₃ but was not affected by 1α,25(OH)₂D₃ after VDR gene silencing. Expression of VDR mRNA was lower in ACC than in benign adrenocortical tumors. VDR immunostaining was evident in benign tumors but it was weak in ACC tissues. CONCLUSIONS Slightly supra-physiological concentrations of 1α,25(OH)₂D₃ have a moderate anti-proliferative effect on H295R cells. Anti-proliferative effect was due to cell cycle arrest in G1 phase, without inducing apoptosis. The low mRNA expression levels at qRT-PCR as well as the weak immunohistochemical expression of VDR in ACC, suggests a protective role of VDR against malignant adrenocortical growth.
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Affiliation(s)
- Catia Pilon
- Department of Medicine-DIMED, Clinica Medica 3 and Cythopathology Unit, University of Padova, Padova, Italy
| | - Riccardo Urbanet
- Department of Medicine-DIMED, Clinica Medica 3 and Cythopathology Unit, University of Padova, Padova, Italy
| | - Tracy A Williams
- Department of Medical Sciences, University of Torino, Torino, Italy
| | - Takashi Maekawa
- Department of Pathology, Tohoku University School of Medicine, Sendai, Japan
| | - Silvia Vettore
- Department of Medicine-DIMED, Clinica Medica 3 and Cythopathology Unit, University of Padova, Padova, Italy
| | - Rosa Sirianni
- Department of Pharmacy, Health and Nutrition Sciences, University of Calabria, Arcavacata di Rende (CS), Italy
| | - Vincenzo Pezzi
- Department of Pharmacy, Health and Nutrition Sciences, University of Calabria, Arcavacata di Rende (CS), Italy
| | - Paolo Mulatero
- Department of Medical Sciences, University of Torino, Torino, Italy
| | - Ambrogio Fassina
- Department of Medicine-DIMED, Clinica Medica 3 and Cythopathology Unit, University of Padova, Padova, Italy
| | - Hironobu Sasano
- Department of Pathology, Tohoku University School of Medicine, Sendai, Japan
| | - Francesco Fallo
- Department of Medicine-DIMED, Clinica Medica 3 and Cythopathology Unit, University of Padova, Padova, Italy.
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Pezzani R, Rubin B, Redaelli M, Radu C, Barollo S, Cicala MV, Salvà M, Mian C, Mucignat-Caretta C, Simioni P, Iacobone M, Mantero F. The antiproliferative effects of ouabain and everolimus on adrenocortical tumor cells. Endocr J 2014; 61:41-53. [PMID: 24153038 DOI: 10.1507/endocrj.ej13-0225] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Ouabain is a cardiotonic steroid obtained from Strophanthus. Recently its role as antiproliferative agent has been investigated in tumor cells. Everolimus is a derivative of rapamycin and acts as a signal transduction inhibitor. Adrenocortical carcinoma is a rare cancer, with poor prognosis. This research focuses on antineoplastic properties of ouabain and its association with everolimus. We analyzed the effects of drugs on cells by MTT assay, by [(3)H] thymidine assay, by Wright's staining, by homogeneous caspases assay, by flow cytometry analysis and by Western blot analysis on H295R and SW13 cells and on primary adrenocortical tumor cells. Ouabain induced cell viability reduction in SW13, H295R and 5 primary adrenocortical tumor cells. Combination of ouabain with everolimus produced a stronger cytotoxic effect on cell proliferation and viability. Marked morphological changes were observed in both SW13 and H295R cell lines after ouabain treatment, with an increase in necrosis. Cell cycle distribution was altered by ouabain in SW13. Analysis of apoptosis demonstrated an increase in caspase activity, clearly evident for SW13 at 72h. FACS analysis by Annexin V-FITC kit and propidium iodide confirmed an increased level of necrosis at higher concentrations. Western blot analysis showed that PI3k/Akt signaling pathway was modified after ouabain treatments in SW13. Ouabain exerts antiproliferative effects on SW13 and H295R cell lines and on primary adrenocortical tumor cells. These data suggest that ouabain or ouabain derivatives may be potential anticancer agents.
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Affiliation(s)
- Raffaele Pezzani
- Endocrinology Unit, Department of Medicine, University of Padova, Padova 35128, Italy
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