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Draskau MK, Rosenmai AK, Bouftas N, Johansson HKL, Panagiotou EM, Holmer ML, Elmelund E, Zilliacus J, Beronius A, Damdimopolou P, van Duursen M, Svingen T. AOP Report: An Upstream Network for Reduced Androgen Signaling Leading to Altered Gene Expression of Androgen Receptor-Responsive Genes in Target Tissues. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2024. [PMID: 39206816 DOI: 10.1002/etc.5972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2024] [Accepted: 07/16/2024] [Indexed: 09/04/2024]
Abstract
Adverse outcome pathways (AOPs) can aid with chemical risk assessment by providing plausible links between chemical activity at the molecular level and effect outcomes in intact organisms. Because AOPs can be used to infer causality between upstream and downstream events in toxicological pathways, the AOP framework can also facilitate increased uptake of alternative methods and new approach methodologies to help inform hazard identification. However, a prevailing challenge is the limited number of fully developed and endorsed AOPs, primarily due to the substantial amount of work required by AOP developers and reviewers. Consequently, a more pragmatic approach to AOP development has been proposed where smaller units of knowledge are developed and reviewed independent of full AOPs. In this context, we have developed an upstream network comprising key events (KEs) and KE relationships related to decreased androgen signaling, converging at a nodal KE that can branch out to numerous adverse outcomes (AOs) relevant to androgen-sensitive toxicological pathways. Androgen signaling represents an extensively studied pathway for endocrine disruption. It is linked to numerous disease outcomes and can be affected by many different endocrine-disrupting chemicals. Still, pathways related to disrupted androgen signaling remain underrepresented in the AOP-wiki, and endorsed AOPs are lacking. Given the pivotal role of androgen signaling in development and function across vertebrate taxa and life stages of both sexes, this upstream AOP network serves as a foundational element for developing numerous AOPs. By connecting the upstream network with various downstream AOs, encompassing different species, it can also facilitate cross-species extrapolations for hazard and risk assessment of chemicals. Environ Toxicol Chem 2024;00:1-9. © 2024 The Author(s). Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Monica K Draskau
- National Food Institute, Technical University of Denmark, Lyngby, Denmark
| | - Anna K Rosenmai
- National Food Institute, Technical University of Denmark, Lyngby, Denmark
| | - Nora Bouftas
- Environmental Health and Toxicology, Amsterdam Institute for Life and Environment, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | | | - Eleftheria M Panagiotou
- Division of Obstetrics and Gynaecology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of Gynecology and Reproductive Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Marie L Holmer
- National Food Institute, Technical University of Denmark, Lyngby, Denmark
| | - Emilie Elmelund
- National Food Institute, Technical University of Denmark, Lyngby, Denmark
| | - Johanna Zilliacus
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Anna Beronius
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Pauliina Damdimopolou
- Division of Obstetrics and Gynaecology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of Gynecology and Reproductive Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Majorie van Duursen
- Environmental Health and Toxicology, Amsterdam Institute for Life and Environment, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Terje Svingen
- National Food Institute, Technical University of Denmark, Lyngby, Denmark
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Ibarrola J, Jaffe IZ. The Mineralocorticoid Receptor in the Vasculature: Friend or Foe? Annu Rev Physiol 2024; 86:49-70. [PMID: 37788489 DOI: 10.1146/annurev-physiol-042022-015223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Originally described as the renal aldosterone receptor that regulates sodium homeostasis, it is now clear that mineralocorticoid receptors (MRs) are widely expressed, including in vascular endothelial and smooth muscle cells. Ample data demonstrate that endothelial and smooth muscle cell MRs contribute to cardiovascular disease in response to risk factors (aging, obesity, hypertension, atherosclerosis) by inducing vasoconstriction, vascular remodeling, inflammation, and oxidative stress. Extrapolating from its role in disease, evidence supports beneficial roles of vascular MRs in the context of hypotension by promoting inflammation, wound healing, and vasoconstriction to enhance survival from bleeding or sepsis. Advances in understanding how vascular MRs become activated are also reviewed, describing transcriptional, ligand-dependent, and ligand-independent mechanisms. By synthesizing evidence describing how vascular MRs convert cardiovascular risk factors into disease (the vascular MR as a foe), we postulate that the teleological role of the MR is to coordinate responses to hypotension (the MR as a friend).
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Affiliation(s)
- Jaime Ibarrola
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA;
| | - Iris Z Jaffe
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA;
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3
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Vrljicak P, Lucas ES, Tryfonos M, Muter J, Ott S, Brosens JJ. Dynamic chromatin remodeling in cycling human endometrium at single-cell level. Cell Rep 2023; 42:113525. [PMID: 38060448 DOI: 10.1016/j.celrep.2023.113525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 09/21/2023] [Accepted: 11/15/2023] [Indexed: 12/30/2023] Open
Abstract
Estrogen-dependent proliferation followed by progesterone-dependent differentiation of the endometrium culminates in a short implantation window. We performed single-cell assay for transposase-accessible chromatin with sequencing on endometrial samples obtained across the menstrual cycle to investigate the regulation of temporal gene networks that control embryo implantation. We identify uniquely accessible chromatin regions in all major cellular constituents of the endometrium, delineate temporal patterns of coordinated chromatin remodeling in epithelial and stromal cells, and gain mechanistic insights into the emergence of a receptive state through integrated analysis of enriched transcription factor (TF) binding sites in dynamic chromatin regions, chromatin immunoprecipitation sequencing analyses, and gene expression data. We demonstrate that the implantation window coincides with pervasive cooption of transposable elements (TEs) into the regulatory chromatin landscape of decidualizing cells and expression of TE-derived transcripts in a spatially defined manner. Our data constitute a comprehensive map of the chromatin changes that control TF activities in a cycling endometrium at cellular resolution.
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Affiliation(s)
- Pavle Vrljicak
- Warwick Medical School, Division of Biomedical Sciences, University of Warwick, Coventry CV2 2DX, UK; The Zeeman Institute for Systems Biology and Infectious Disease Epidemiology Research (SBIDER), University of Warwick, Coventry CV4 7AL, UK
| | - Emma S Lucas
- Warwick Medical School, Division of Biomedical Sciences, University of Warwick, Coventry CV2 2DX, UK
| | - Maria Tryfonos
- Warwick Medical School, Division of Biomedical Sciences, University of Warwick, Coventry CV2 2DX, UK
| | - Joanne Muter
- Warwick Medical School, Division of Biomedical Sciences, University of Warwick, Coventry CV2 2DX, UK; Tommy's National Centre for Miscarriage Research, University Hospitals Coventry & Warwickshire NHS Trust, Coventry CV2 2DX, UK
| | - Sascha Ott
- Warwick Medical School, Division of Biomedical Sciences, University of Warwick, Coventry CV2 2DX, UK; The Zeeman Institute for Systems Biology and Infectious Disease Epidemiology Research (SBIDER), University of Warwick, Coventry CV4 7AL, UK
| | - Jan J Brosens
- Warwick Medical School, Division of Biomedical Sciences, University of Warwick, Coventry CV2 2DX, UK; Tommy's National Centre for Miscarriage Research, University Hospitals Coventry & Warwickshire NHS Trust, Coventry CV2 2DX, UK.
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Eisa MA, Mansour AM, Salama SA, Elsadek BEM, Ashour AA, Abdelghany TM. Estrogen/estrogen receptor activation protects against DEN-induced liver fibrosis in female rats via modulating TLR-4/NF-kβ signaling. Eur J Pharmacol 2023; 960:176165. [PMID: 38059444 DOI: 10.1016/j.ejphar.2023.176165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 12/08/2023]
Abstract
AIM Men are more susceptible to liver fibrosis (LF) than women. However, the underlying molecular mechanism, especially the role of estrogen/estrogen receptor (ER) activation in this sexual dimorphism is unclear. Therefore, the aim of the current study was to investigate the impact and the underlying molecular mechanisms of estrogen/ER activation on diethyl nitrosamine (DEN)-induced LF. MAIN METHODS Thirty ovariectomized (OVX) female rats were randomly allocated into five groups (n = 6), and received no treatment, diethyl nitrosamine (DEN), DEN/fulvestrant, DEN/silymarin or DEN/estradiol benzoate (EB). In addition, three sham groups received no treatment, DEN or DEN/fulvestrant, and one control group that neither ovariectomized nor treated. Directly after treatment, liver injury biomarkers were measured. In addition, hepatic tissue hydroxyproline, TNF- α, TGF- β, and IL-10 were evaluated. Expression of NF-kβ, CD68 (a marker for macrophage infiltration), ER-β and TLR-4 were measured. Finally, liver tissue histopathology was assessed. KEY FINDINGS Ovariectomy aggravates DEN-induced LF, as it significantly elevated all liver tissue injury biomarkers. This effect has become even worse after blocking ER by fulvestrant, indicating a protective role of estrogen/ER activation against DEN-induced LF. Inhibition of TLR-4/NF-kβ signaling pathway contributed to this protective effect, as estrogen deprivation or blocking of ER significantly activates this pathway during the onset of LF. While administration of EB or silymarin (selective ER-β activator) improved LF indices and deactivated this pathway. SIGNIFICANCE These results provide new insight into the pivotal role of estrogen/ER activation via modulation of TLR-4/NF-kβ, in the alleviation of LF pathogenesis.
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Affiliation(s)
- Mahmoud A Eisa
- Department of Pharmacology and Toxicology, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, 11651, Egypt.
| | - Ahmed M Mansour
- Department of Pharmacology and Toxicology, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, 11651, Egypt.
| | - Salama A Salama
- Department of Pharmacology and Toxicology, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, 11651, Egypt.
| | - Bakheet E M Elsadek
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut, 71524, Egypt.
| | - Ahmed A Ashour
- Department of Pharmacology and Toxicology, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, 11651, Egypt; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Sinai University-Kantara Branch, Ismailia, 41636, Egypt.
| | - Tamer M Abdelghany
- Department of Pharmacology and Toxicology, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, 11651, Egypt; Department of Pharmacology and Toxicology, Faculty of Pharmacy Heliopolis University, Cairo, 11785, Egypt.
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Muñoz JP, Calaf GM. Acetylcholine, Another Factor in Breast Cancer. BIOLOGY 2023; 12:1418. [PMID: 37998017 PMCID: PMC10669196 DOI: 10.3390/biology12111418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/25/2023]
Abstract
Acetylcholine (ACh) is a neurotransmitter that regulates multiple functions in the nervous system, and emerging evidence indicates that it could play a role in cancer progression. However, this function is controversial. Previously, we showed that organophosphorus pesticides decreased the levels of the enzyme acetylcholinesterase in vivo, increasing ACh serum levels and the formation of tumors in the mammary glands of rats. Furthermore, we showed that ACh exposure in breast cancer cell lines induced overexpression of estrogen receptor alpha (ERα), a key protein described as the master regulator in breast cancer. Therefore, here, we hypothesize that ACh alters the ERα activity through a ligand-independent mechanism. The results here reveal that the physiological concentration of ACh leads to the release of Ca+2 and the activity of MAPK/ERK and PI3K/Akt pathways. These changes are associated with an induction of p-ERα and its recruitment to the nucleus. However, ACh fails to induce overexpression of estrogen-responsive genes, suggesting a different activation mechanism than that of 17ß-estradiol. Finally, ACh promotes the viability of breast cancer cell lines in an ERα-dependent manner and induces the overexpression of some EMT markers. In summary, our results show that ACh promotes breast cancer cell proliferation and ERα activity, possibly in a ligand-independent manner, suggesting its putative role in breast cancer progression.
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Affiliation(s)
- Juan P. Muñoz
- Laboratorio de Bioquímica, Departamento de Química, Facultad de Ciencias, Universidad de Tarapacá, Arica 1000007, Chile;
| | - Gloria M. Calaf
- Instituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, Chile
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6
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Kiriyama Y, Nochi H. Regulation of PD-L1 Expression by Nuclear Receptors. Int J Mol Sci 2023; 24:9891. [PMID: 37373038 DOI: 10.3390/ijms24129891] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/04/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
The suppression of excessive immune responses is necessary to prevent injury to the body, but it also allows cancer cells to escape immune responses and proliferate. Programmed cell death 1 (PD-1) is a co-inhibitory molecule that is present on T cells and is the receptor for programmed cell death ligand 1 (PD-L1). The binding of PD-1 to PD-L1 leads to the inhibition of the T cell receptor signaling cascade. PD-L1 has been found to be expressed in many types of cancers, such as lung, ovarian, and breast cancer, as well as glioblastoma. Furthermore, PD-L1 mRNA is widely expressed in normal peripheral tissues including the heart, skeletal muscle, placenta, lungs, thymus, spleen, kidney, and liver. The expression of PD-L1 is upregulated by proinflammatory cytokines and growth factors via a number of transcription factors. In addition, various nuclear receptors, such as androgen receptor, estrogen receptor, peroxisome-proliferator-activated receptor γ, and retinoic-acid-related orphan receptor γ, also regulate the expression of PD-L1. This review will focus on the current knowledge of the regulation of PD-L1 expression by nuclear receptors.
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Affiliation(s)
- Yoshimitsu Kiriyama
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 769-2193, Kagawa, Japan
- Institute of Neuroscience, Tokushima Bunri University, Tokushima 769-2193, Kagawa, Japan
| | - Hiromi Nochi
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 769-2193, Kagawa, Japan
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Hany D, Vafeiadou V, Picard D. CRISPR-Cas9 screen reveals a role of purine synthesis for estrogen receptor α activity and tamoxifen resistance of breast cancer cells. SCIENCE ADVANCES 2023; 9:eadd3685. [PMID: 37172090 PMCID: PMC10181187 DOI: 10.1126/sciadv.add3685] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
In breast cancer, resistance to endocrine therapies that target estrogen receptor α (ERα), such as tamoxifen and fulvestrant, remains a major clinical problem. Whether and how ERα+ breast cancers switch from being estrogen-dependent to estrogen-independent remains unclear. With a genome-wide CRISPR-Cas9 knockout screen, we identified previously unknown biomarkers and potential therapeutic targets of endocrine resistance. We demonstrate that high levels of PAICS, an enzyme involved in the de novo biosynthesis of purines, can shift the balance of ERα activity to be more estrogen-independent and tamoxifen-resistant. We find that this may be due to elevated activities of cAMP-activated protein kinase A and mTOR, kinases known to phosphorylate ERα specifically and to stimulate its activity. Genetic or pharmacological targeting of PAICS sensitizes tamoxifen-resistant cells to tamoxifen. Addition of purines renders them more resistant. On the basis of these findings, we propose the combined targeting of PAICS and ERα as a new, effective, and potentially safe therapeutic regimen.
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Affiliation(s)
- Dina Hany
- Département de Biologie Moléculaire et Cellulaire, Université de Genève, Sciences III, Quai Ernest-Ansermet 30, CH - 1211 Genève 4, Switzerland
- On leave from: Department of Pharmacology and Therapeutics Faculty of Pharmacy, Pharos University in Alexandria, Alexandria 21311, Egypt
| | - Vasiliki Vafeiadou
- Département de Biologie Moléculaire et Cellulaire, Université de Genève, Sciences III, Quai Ernest-Ansermet 30, CH - 1211 Genève 4, Switzerland
| | - Didier Picard
- Département de Biologie Moléculaire et Cellulaire, Université de Genève, Sciences III, Quai Ernest-Ansermet 30, CH - 1211 Genève 4, Switzerland
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8
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Hany D, Zoetemelk M, Bhattacharya K, Nowak-Sliwinska P, Picard D. Network-informed discovery of multidrug combinations for ERα+/HER2-/PI3Kα-mutant breast cancer. Cell Mol Life Sci 2023; 80:80. [PMID: 36869202 PMCID: PMC10032341 DOI: 10.1007/s00018-023-04730-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/20/2023] [Accepted: 02/19/2023] [Indexed: 03/05/2023]
Abstract
Breast cancer is a persistent threat to women worldwide. A large proportion of breast cancers are dependent on the estrogen receptor α (ERα) for tumor progression. Therefore, targeting ERα with antagonists, such as tamoxifen, or estrogen deprivation by aromatase inhibitors remain standard therapies for ERα + breast cancer. The clinical benefits of monotherapy are often counterbalanced by off-target toxicity and development of resistance. Combinations of more than two drugs might be of great therapeutic value to prevent resistance, and to reduce doses, and hence, decrease toxicity. We mined data from the literature and public repositories to construct a network of potential drug targets for synergistic multidrug combinations. With 9 drugs, we performed a phenotypic combinatorial screen with ERα + breast cancer cell lines. We identified two optimized low-dose combinations of 3 and 4 drugs of high therapeutic relevance to the frequent ERα + /HER2-/PI3Kα-mutant subtype of breast cancer. The 3-drug combination targets ERα in combination with PI3Kα and cyclin-dependent kinase inhibitor 1 (p21). In addition, the 4-drug combination contains an inhibitor for poly (ADP-ribose) polymerase 1 (PARP1), which showed benefits in long-term treatments. Moreover, we validated the efficacy of the combinations in tamoxifen-resistant cell lines, patient-derived organoids, and xenograft experiments. Thus, we propose multidrug combinations that have the potential to overcome the standard issues of current monotherapies.
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Affiliation(s)
- Dina Hany
- Département de Biologie Moléculaire et Cellulaire, Université de Genève, Sciences III, Quai Ernest-Ansermet 30, 1211, Genève 4, Switzerland
- On leave from: Department of Pharmacology and Therapeutics, Faculty of Pharmacy, Pharos University in Alexandria, Alexandria, 21311, Egypt
| | - Marloes Zoetemelk
- Groupe de Pharmacologie Moléculaire, Section des Sciences Pharmaceutiques, Université de Genève, Genève, Switzerland
- Institut des Sciences Pharmaceutiques de Suisse Occidentale, Université de Genève, Genève, Switzerland
- Centre de Recherche Translationnelle en Onco-hématologie, Université de Genève, Genève, Switzerland
| | - Kaushik Bhattacharya
- Département de Biologie Moléculaire et Cellulaire, Université de Genève, Sciences III, Quai Ernest-Ansermet 30, 1211, Genève 4, Switzerland
| | - Patrycja Nowak-Sliwinska
- Groupe de Pharmacologie Moléculaire, Section des Sciences Pharmaceutiques, Université de Genève, Genève, Switzerland
- Institut des Sciences Pharmaceutiques de Suisse Occidentale, Université de Genève, Genève, Switzerland
- Centre de Recherche Translationnelle en Onco-hématologie, Université de Genève, Genève, Switzerland
| | - Didier Picard
- Département de Biologie Moléculaire et Cellulaire, Université de Genève, Sciences III, Quai Ernest-Ansermet 30, 1211, Genève 4, Switzerland.
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Wesołowska A. Sex—the most underappreciated variable in research: insights from helminth-infected hosts. Vet Res 2022; 53:94. [PMID: 36397174 PMCID: PMC9672581 DOI: 10.1186/s13567-022-01103-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 07/29/2022] [Indexed: 11/18/2022] Open
Abstract
The sex of a host affects the intensity, prevalence, and severity of helminth infection. In many cases, one sex has been found to be more susceptible than the other, with the prevalence and intensity of helminth infections being generally higher among male than female hosts; however, many exceptions exist. This observed sex bias in parasitism results primarily from ecological, behavioural, and physiological differences between males and females. Complex interactions between these influences modulate the risk of infection. Indeed, an interplay among sex hormones, sex chromosomes, the microbiome and the immune system significantly contributes to the generation of sex bias among helminth-infected hosts. However, sex hormones not only can modulate the course of infection but also can be exploited by the parasites, and helminths appear to have developed molecules and pathways for this purpose. Furthermore, host sex may influence the efficacy of anti-helminth vaccines; however, although little data exist regarding this sex-dependent efficacy, host sex is known to influence the response to vaccines. Despite its importance, host sex is frequently overlooked in parasitological studies. This review focuses on the key contributors to sex bias in the case of helminth infection. The precise nature of the mechanisms/factors determining these sex-specific differences generally remains largely unknown, and this represents an obstacle in the development of control methods. There is an urgent need to identify any protective elements that could be targeted in future therapies to provide optimal disease management with regard to host sex. Hence, more research is needed into the impact of host sex on immunity and protection.
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Gutierrez-Castellanos N, Husain BFA, Dias IC, Lima SQ. Neural and behavioral plasticity across the female reproductive cycle. Trends Endocrinol Metab 2022; 33:769-785. [PMID: 36253276 DOI: 10.1016/j.tem.2022.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 09/09/2022] [Accepted: 09/22/2022] [Indexed: 11/05/2022]
Abstract
Sex is fundamental for the evolution and survival of most species. However, sex can also pose danger, because it increases the risk of predation and disease transmission, among others. Thus, in many species, cyclic fluctuations in the concentration of sex hormones coordinate sexual receptivity and attractiveness with female reproductive capacity, promoting copulation when fertilization is possible and preventing it otherwise. In recent decades, numerous studies have reported a wide variety of sex hormone-dependent plastic rearrangements across the entire brain, including areas relevant for female sexual behavior. By contrast, how sex hormone-induced plasticity alters the computations performed by such circuits, such that collectively they produce the appropriate periodic switches in female behavior, is mostly unknown. In this review, we highlight the myriad sex hormone-induced neuronal changes known so far, the full repertoire of behavioral changes across the reproductive cycle, and the few examples where the relationship between sex hormone-dependent plasticity, neural activity, and behavior has been established. We also discuss current challenges to causally link the actions of sex hormones to the modification of specific cellular pathways and behavior, focusing on rodents as a model system while drawing a comparison between rodents and humans wherever possible.
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Affiliation(s)
| | - Basma F A Husain
- Champalimaud Research, Champalimaud Foundation, Avenida Brasília, 1400-038 Lisbon, Portugal
| | - Inês C Dias
- Champalimaud Research, Champalimaud Foundation, Avenida Brasília, 1400-038 Lisbon, Portugal
| | - Susana Q Lima
- Champalimaud Research, Champalimaud Foundation, Avenida Brasília, 1400-038 Lisbon, Portugal.
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Hamel KM, King CT, Cavalier MB, Liimatta KQ, Rozanski GL, King TA, Lam M, Bingham GC, Byrne CE, Xing D, Collins-Burow BM, Burow ME, Belgodere JA, Bratton MR, Bunnell BA, Martin EC. Breast Cancer-Stromal Interactions: Adipose-Derived Stromal/Stem Cell Age and Cancer Subtype Mediated Remodeling. Stem Cells Dev 2022; 31:604-620. [PMID: 35579936 PMCID: PMC9595652 DOI: 10.1089/scd.2021.0279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 05/16/2022] [Indexed: 10/18/2022] Open
Abstract
Adipose tissue is characterized as an endocrine organ that acts as a source of hormones and paracrine factors. In diseases such as cancer, endocrine and paracrine signals from adipose tissue contribute to cancer progression. Young individuals with estrogen receptor-alpha positive (ER-α+) breast cancer (BC) have an increased resistance to endocrine therapies, suggesting that alternative estrogen signaling is activated within these cells. Despite this, the effects of stromal age on the endocrine response in BC are not well defined. To identify differences between young and aged ER-α+ breast tumors, RNA sequencing data were obtained from The Cancer Genome Atlas. Analysis revealed enrichment of matrix and paracrine factors in young (≤40 years old) patients compared to aged (≥65 years old) tumor samples. Adipose-derived stromal/stem cells (ASCs) from noncancerous lipoaspirate of young and aged donors were evaluated for alterations in matrix production and paracrine secreted factors to determine if the tumor stroma could alter estrogen signaling. Young and aged ASCs demonstrated comparable proliferation, differentiation, and matrix production, but exhibited differences in the expression levels of inflammatory cytokines (Interferon gamma, interleukin [IL]-8, IL-10, Tumor necrosis factor alpha, IL-2, and IL-6). Conditioned media (CM)-based experiments showed that young ASC donor age elevated endocrine response in ER-α+ BC cell lines. MCF-7 ER-α+ BC cell line treated with secreted factors from young ASCs had enhanced ER-α regulated genes (PGR and SDF-1) compared to MCF-7 cells treated with aged ASC CM. Western blot analysis demonstrated increased activation levels of p-ER ser-167 in the MCF-7 cell line treated with young ASC secreted factors. To determine if ER-α+ BC cells heightened the cytokine release in ASCs, ASCs were stimulated with MCF-7-derived CM. Results demonstrated no change in growth factors or cytokines when treated with the ER-α+ secretome. In contrast to ER-α+ CM, the ER-α negative MDA-MB-231 derived CM demonstrated increased stimulation of pro-inflammatory cytokines in ASCs. While there was no observed change in the release of selected paracrine factors, MCF-7 cells did induce matrix production and a pro-adipogenic lineage commitment. The adipogenesis was evident by increased collagen content through Sirius Red/Fast Green Collagen stain, lipid accumulation evident by Oil Red O stain, and significantly increased expression in PPARγ mRNA expression. The data from this study provide evidence suggesting more of a subtype-dependent than an age-dependent difference in stromal response to BC, suggesting that this signaling is not heightened by reciprocal signals from ER-α+ BC cell lines. These results are important in understanding the mechanisms of estrogen signaling and the dynamic and reciprocal nature of cancer cell-stromal cell crosstalk that can lead to tumor heterogeneity and variance in response to therapy.
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Affiliation(s)
- Katie M. Hamel
- Department of Biological Engineering, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Connor T. King
- Department of Biological Engineering, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Maryn B. Cavalier
- Department of Biological Engineering, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Kara Q. Liimatta
- Department of Biological Engineering, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Grace L. Rozanski
- Department of Biological Engineering, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Timothy A. King
- Department of Biological Engineering, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Meggie Lam
- Department of Biological Engineering, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Grace C. Bingham
- Department of Biological Engineering, Louisiana State University, Baton Rouge, Louisiana, USA
| | - C. Ethan Byrne
- Department of Biological Engineering, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Diensn Xing
- Department of Biological Engineering, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Bridgette M. Collins-Burow
- Section of Hematology and Medical Oncology, Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Matthew E. Burow
- Section of Hematology and Medical Oncology, Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Jorge A. Belgodere
- Department of Biological Engineering, Louisiana State University, Baton Rouge, Louisiana, USA
| | | | - Bruce A. Bunnell
- Department of Microbiology, Immunology and Genetics, University of North Texas Health Sciences Center, Fort Worth, Texas, USA
| | - Elizabeth C. Martin
- Department of Biological Engineering, Louisiana State University, Baton Rouge, Louisiana, USA
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12
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Chromatin modifiers – Coordinators of estrogen action. Biomed Pharmacother 2022; 153:113548. [DOI: 10.1016/j.biopha.2022.113548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/03/2022] [Accepted: 08/11/2022] [Indexed: 11/20/2022] Open
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13
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Salas A, Beltrán-Flores S, Évora C, Reyes R, Montes de Oca F, Delgado A, Almeida TA. Stem Cell Growth and Differentiation in Organ Culture: New Insights for Uterine Fibroid Treatment. Biomedicines 2022; 10:biomedicines10071542. [PMID: 35884847 PMCID: PMC9313456 DOI: 10.3390/biomedicines10071542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/22/2022] [Accepted: 06/27/2022] [Indexed: 11/18/2022] Open
Abstract
Organ culture allows for the understanding of normal and tumor cell biology, and tissues generally remain viable for 5–7 days. Strikingly, we determined that myometrial and MED12 mutant leiomyoma cells repopulated cell-depleted tissue slices after 20 days of culture. Using immunofluorescence and quantitative PCR of stem cell and undifferentiated cell markers, we observed clusters of CD49b+ cells in tumor slices. CD49b+ cells, however, were sparsely detected in the myometrial slices. Almost all LM cells strongly expressed Ki67, while only a few myometrial cells were stained for this proliferation marker. The CD73 marker was expressed only in tumor cells, whereas the mesenchymal stem cell receptor KIT was detected only in normal cells. HMGA2 and CD24 showed broader expression patterns and higher signal intensity in leiomyoma than in myometrial cells. In this study, we propose that activating CD49b+ stem cells in myometrium leads to asymmetrical division, giving rise to transit-amplifying KIT+ cells that differentiate to smooth muscle cells. On the contrary, activated leiomyoma CD49b+ cells symmetrically divide to form clusters of stem cells that divide and differentiate to smooth muscle cells without losing proliferation ability. In conclusion, normal and mutant stem cells can proliferate and differentiate in long-term organ culture, constituting a helpful platform for novel therapeutic discovery.
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Affiliation(s)
- Ana Salas
- Department of Biochemistry, Microbiology, Cell Biology and Genetics, Biology Section, Science Faculty, University of La Laguna, Ave. Astrofísico Fco. Sánchez s/n. San Cristóbal de La Laguna, 38200 Santa Cruz de Tenerife, Spain; (A.S.); (S.B.-F.); (R.R.)
- Institute of Tropical Diseases and Healthcare of the Canary Island, Ave. Astrofísico Fco. Sánchez s/n. San Cristóbal de La Laguna, 38200 Santa Cruz de Tenerife, Spain
| | - Silvia Beltrán-Flores
- Department of Biochemistry, Microbiology, Cell Biology and Genetics, Biology Section, Science Faculty, University of La Laguna, Ave. Astrofísico Fco. Sánchez s/n. San Cristóbal de La Laguna, 38200 Santa Cruz de Tenerife, Spain; (A.S.); (S.B.-F.); (R.R.)
| | - Carmen Évora
- Department of Chemical Engineering and Pharmaceutical Technology, Faculty of Pharmacy, University of La Laguna, Ave. Astrofísico Fco. Sánchez s/n. San Cristóbal de La Laguna, 38200 Santa Cruz de Tenerife, Spain; (C.É.); (A.D.)
- Institute of Biomedical Technologies (ITB), Medicine Section, Faculty of Health Science, University of La Laguna, St. Santa María Soledad, s/n. San Cristóbal de La Laguna, 38200 Santa Cruz de Tenerife, Spain
| | - Ricardo Reyes
- Department of Biochemistry, Microbiology, Cell Biology and Genetics, Biology Section, Science Faculty, University of La Laguna, Ave. Astrofísico Fco. Sánchez s/n. San Cristóbal de La Laguna, 38200 Santa Cruz de Tenerife, Spain; (A.S.); (S.B.-F.); (R.R.)
- Institute of Tropical Diseases and Healthcare of the Canary Island, Ave. Astrofísico Fco. Sánchez s/n. San Cristóbal de La Laguna, 38200 Santa Cruz de Tenerife, Spain
| | | | - Araceli Delgado
- Department of Chemical Engineering and Pharmaceutical Technology, Faculty of Pharmacy, University of La Laguna, Ave. Astrofísico Fco. Sánchez s/n. San Cristóbal de La Laguna, 38200 Santa Cruz de Tenerife, Spain; (C.É.); (A.D.)
- Institute of Biomedical Technologies (ITB), Medicine Section, Faculty of Health Science, University of La Laguna, St. Santa María Soledad, s/n. San Cristóbal de La Laguna, 38200 Santa Cruz de Tenerife, Spain
| | - Teresa A. Almeida
- Department of Biochemistry, Microbiology, Cell Biology and Genetics, Biology Section, Science Faculty, University of La Laguna, Ave. Astrofísico Fco. Sánchez s/n. San Cristóbal de La Laguna, 38200 Santa Cruz de Tenerife, Spain; (A.S.); (S.B.-F.); (R.R.)
- Institute of Tropical Diseases and Healthcare of the Canary Island, Ave. Astrofísico Fco. Sánchez s/n. San Cristóbal de La Laguna, 38200 Santa Cruz de Tenerife, Spain
- Correspondence: ; Tel.: +34-922-316-502 (ext. 6117)
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14
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Munoz E, Chen G, Hossain A, Wu S, Oceguera Nava E, Hang J, Lee T, Zhang Q, Wang G, Chen QH. Synthesis and biological evaluation of niclosamide PROTACs. Bioorg Med Chem Lett 2022; 72:128870. [PMID: 35772635 DOI: 10.1016/j.bmcl.2022.128870] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/22/2022] [Accepted: 06/24/2022] [Indexed: 11/02/2022]
Abstract
Roughly 268,000 new cases of prostate cancer and 34,000 deaths from prostate cancer are projected by the American Cancer Society to occur in the United States in 2022. Androgen receptor is a key protein in the proliferation and survival of prostate cancer cells and has been revealed to be overexpressed in 30% to 50% of castration-resistant prostate cancer patients. One promising approach to reducing the level of this protein is Proteolysis Targeting Chimeras (PROTACs) that is an emerging drug discovery technology. PROTACs are hetero-bifunctional molecules where one end binds to a protein of interest and the other to an E3 ligase ligand, initiating the Ubiquitin-Proteasome Pathway for protein degradation. Two PROTACs with niclosamide as androgen receptor ligand and VHL-032 as the E3 ligase ligand have been designed and synthesized for suppressing proliferation of androgen receptor-positive prostate cancer cells via degrading androgen receptor. The in vitro antiproliferative assessment suggested that they can selectively suppress PC-3, LNCaP, and 22Rv1 prostate cancer cell proliferation, but cannot inhibit DU145 cell proliferation. However, the mechanism of both compounds in suppressing prostate cancer cell proliferation is not through the AR PROTAC mechanism because they did not degrade AR in our Western Blotting assay up to 1 µM.
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Affiliation(s)
- Erick Munoz
- Department of Chemistry, California State University, Fresno, 2555 E. San Ramon Avenue, M/S SB70, Fresno, CA 93740, USA
| | - Guanglin Chen
- Department of Chemistry, California State University, Fresno, 2555 E. San Ramon Avenue, M/S SB70, Fresno, CA 93740, USA
| | - Ahamed Hossain
- Department of Chemistry and RCMI Cancer Research Center, Xavier University of Louisiana, 1 Drexel Drive, New Orleans, LA 70125, USA
| | - Sitong Wu
- Department of Chemistry, California State University, Fresno, 2555 E. San Ramon Avenue, M/S SB70, Fresno, CA 93740, USA
| | - Esveidy Oceguera Nava
- Department of Chemistry, California State University, Fresno, 2555 E. San Ramon Avenue, M/S SB70, Fresno, CA 93740, USA
| | - Jasmine Hang
- Department of Chemistry, California State University, Fresno, 2555 E. San Ramon Avenue, M/S SB70, Fresno, CA 93740, USA
| | - Tong Lee
- Department of Chemistry, California State University, Fresno, 2555 E. San Ramon Avenue, M/S SB70, Fresno, CA 93740, USA
| | - Qiang Zhang
- Department of Chemistry and RCMI Cancer Research Center, Xavier University of Louisiana, 1 Drexel Drive, New Orleans, LA 70125, USA
| | - Guangdi Wang
- Department of Chemistry and RCMI Cancer Research Center, Xavier University of Louisiana, 1 Drexel Drive, New Orleans, LA 70125, USA.
| | - Qiao-Hong Chen
- Department of Chemistry, California State University, Fresno, 2555 E. San Ramon Avenue, M/S SB70, Fresno, CA 93740, USA.
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15
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Mohammadi Ghahhari N, Sznurkowska MK, Hulo N, Bernasconi L, Aceto N, Picard D. Cooperative interaction between ERα and the EMT-inducer ZEB1 reprograms breast cancer cells for bone metastasis. Nat Commun 2022; 13:2104. [PMID: 35440541 PMCID: PMC9018728 DOI: 10.1038/s41467-022-29723-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 03/30/2022] [Indexed: 02/08/2023] Open
Abstract
The epithelial to mesenchymal transition (EMT) has been proposed to contribute to the metastatic spread of breast cancer cells. EMT-promoting transcription factors determine a continuum of different EMT states. In contrast, estrogen receptor α (ERα) helps to maintain the epithelial phenotype of breast cancer cells and its expression is crucial for effective endocrine therapies. Determining whether and how EMT-associated transcription factors such as ZEB1 modulate ERα signaling during early stages of EMT could promote the discovery of therapeutic approaches to suppress metastasis. Here we show that, shortly after induction of EMT and while cells are still epithelial, ZEB1 modulates ERα-mediated transcription induced by estrogen or cAMP signaling in breast cancer cells. Based on these findings and our ex vivo and xenograft results, we suggest that the functional interaction between ZEB1 and ERα may alter the tissue tropism of metastatic breast cancer cells towards bone. The epithelial mesenchymal transition (EMT) is important in the metastatic spread of cancer cells. Here, the authors show that the EMT transcription factor, ZEB1, can modify estrogen receptor α during EMT and facilitate the migration of breast cancer cells to the bone
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Affiliation(s)
| | - Magdalena K Sznurkowska
- Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, 8093, Zürich, Switzerland
| | - Nicolas Hulo
- Institute of Genetics and Genomics of Geneva, Université de Genève, 1211, Genève 4, Switzerland
| | - Lilia Bernasconi
- Département de Biologie Cellulaire, Université de Genève, Sciences III, 1211, Genève 4, Switzerland
| | - Nicola Aceto
- Department of Biology, Institute of Molecular Health Sciences, ETH Zurich, 8093, Zürich, Switzerland
| | - Didier Picard
- Département de Biologie Cellulaire, Université de Genève, Sciences III, 1211, Genève 4, Switzerland.
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16
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Progesterone Sporadically Induces Reactivation from Latency in Female Calves but Proficiently Stimulates Bovine Herpesvirus 1 Productive Infection. J Virol 2022; 96:e0213021. [PMID: 35019726 DOI: 10.1128/jvi.02130-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Acute infection of the ocular, oral, or nasal cavity by bovine herpesvirus 1 (BoHV-1) culminates in lifelong latency in sensory neurons within trigeminal ganglia. The BoHV-1 latency reactivation cycle, including calves latently infected with commercially available modified live vaccines, can lead to reproductive complications, including abortions. Recent studies demonstrated progesterone stimulated BoHV-1 productive infection and sporadically induced reactivation from latency in male rabbits. The progesterone receptor (PR) and progesterone transactivate the immediate early transcription unit 1 (IEtu1) promoter and the infected cell protein 0 (bICP0) early promoter. These viral promoters drive expression of two viral transcriptional regulatory proteins (bICP0 and bICP4) that are crucial for productive infection. Based on these observations, we hypothesize that progesterone induces reactivation in a subset of calves latently infected with BoHV-1. These studies demonstrated progesterone was less efficient than dexamethasone at initiating reactivation from latency in female calves. Notably, heat stress correlated with enhancing the ability of progesterone to induce reactivation from latency. Previous studies demonstrated that heat stress activates the glucocorticoid receptor (GR), which suggested GR activation augments progesterone-mediated reactivation from latency. Additional studies revealed GR and PR cooperatively stimulated productive infection and synergistically transactivated the IEtu1 promoter when cultures were treated with dexamethasone. Mutating one or both GR binding sites in the IEtu1 promoter blocked transactivation. Collectively, these studies indicated that progesterone intermittently triggered reactivation from latency, and heat stress augmented reactivation from reactivation. Finally, these studies suggest progesterone enhances virus spread in tissues and cells where PR is abundantly expressed. IMPORTANCE Steroid hormone fluctuations are predicted to enhance or initiate bovine herpesvirus 1 (BoHV-1) replication and virus spread in cattle. For example, stress increases the incidence of BoHV-1 reactivation from latency in cattle, and the synthetic corticosteroid dexamethasone consistently induces reactivation from latency. The glucocorticoid receptor (GR) and dexamethasone stimulate key viral regulatory promoters and productive infection, in part because the viral genome contains numerous consensus GR-responsive elements (GREs). The progesterone receptor (PR) and GR belong to the type I nuclear hormone receptor family. PR and progesterone specifically bind to and transactivate viral promoters that contain GREs and stimulate BoHV-1 productive infection. Although progesterone did not induce reactivation from latency in female calves as efficiently as dexamethasone, heat stress enhanced progesterone-mediated reactivation from latency. Consequently, we predict that low levels of stressful stimuli can cooperate with progesterone to induce reactivation from latency or promote virus spread.
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17
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Vafeiadou V, Hany D, Picard D. Hyperactivation of MAPK Induces Tamoxifen Resistance in SPRED2-Deficient ERα-Positive Breast Cancer. Cancers (Basel) 2022; 14:954. [PMID: 35205702 PMCID: PMC8870665 DOI: 10.3390/cancers14040954] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/07/2022] [Accepted: 02/10/2022] [Indexed: 02/07/2023] Open
Abstract
Breast cancer is the number one cause of cancer-related mortality in women worldwide. Most breast tumors depend on the expression of the estrogen receptor α (ERα) for their growth. For this reason, targeting ERα with antagonists such as tamoxifen is the therapy of choice for most patients. Although initially responsive to tamoxifen, about 40% of the patients will develop resistance and ultimately a recurrence of the disease. Thus, finding new biomarkers and therapeutic approaches to treatment-resistant tumors is of high significance. SPRED2, an inhibitor of the MAPK signal transduction pathway, has been found to be downregulated in various cancers. In the present study, we found that SPRED2 is downregulated in a large proportion of breast-cancer patients. Moreover, the knockdown of SPRED2 significantly increases cell proliferation and leads to tamoxifen resistance of breast-cancer cells that are initially tamoxifen-sensitive. We found that resistance occurs through increased activation of the MAPKs ERK1/ERK2, which enhances the transcriptional activity of ERα. Treatment of SPRED2-deficient breast cancer cells with a combination of the ERK 1/2 inhibitor ulixertinib and 4-hydroxytamoxifen (4-OHT) can inhibit cell growth and proliferation and overcome the induced tamoxifen resistance. Taken together, these results indicate that SPRED2 may also be a tumor suppressor for breast cancer and that it is a key regulator of cellular sensitivity to 4-OHT.
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Affiliation(s)
- Vasiliki Vafeiadou
- Département de Biologie Moléculaire et Cellulaire, Université de Genève, Sciences III, 1211 Genève 4, Switzerland; (V.V.); (D.H.)
| | - Dina Hany
- Département de Biologie Moléculaire et Cellulaire, Université de Genève, Sciences III, 1211 Genève 4, Switzerland; (V.V.); (D.H.)
- On leave from: Department of Pharmacology and Therapeutics, Faculty of Pharmacy, Pharos University in Alexandria, Alexandria 21311, Egypt
| | - Didier Picard
- Département de Biologie Moléculaire et Cellulaire, Université de Genève, Sciences III, 1211 Genève 4, Switzerland; (V.V.); (D.H.)
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18
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Ceccarelli I, Bioletti L, Peparini S, Solomita E, Ricci C, Casini I, Miceli E, Aloisi AM. Estrogens and phytoestrogens in body functions. Neurosci Biobehav Rev 2021; 132:648-663. [PMID: 34890602 DOI: 10.1016/j.neubiorev.2021.12.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 12/03/2021] [Accepted: 12/04/2021] [Indexed: 12/23/2022]
Abstract
Estrogens are the hormones of reproduction in women as well as of many other important functions in the male and female body. They undergo significant changes in the different phases of life, e.g. during puberty, pregnancy or at menopause/andropause. Phytoestrogens are natural non-steroidal phenolic plant compounds that can mimic the activity of estrogens and their beneficial effects in women and in men. This narrative review summarizes the literature on the physiological role of estrogens and the several potential health benefits of phytoestrogens, with particular attention given to the possible role of phytoestrogens in aging.
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Affiliation(s)
- Ilaria Ceccarelli
- Department Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Lucia Bioletti
- Department Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Sofia Peparini
- Department Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Erminia Solomita
- Department Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Comasia Ricci
- Department Life Sciences, University of Siena, Siena, Italy
| | - Ilenia Casini
- Department Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Elisangela Miceli
- Department Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Anna Maria Aloisi
- Department Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy.
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19
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Ostler JB, Jones C. Stress Induced Transcription Factors Transactivate the Herpes Simplex Virus 1 Infected Cell Protein 27 (ICP27) Transcriptional Enhancer. Viruses 2021; 13:2296. [PMID: 34835102 PMCID: PMC8622287 DOI: 10.3390/v13112296] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/11/2021] [Accepted: 11/12/2021] [Indexed: 01/01/2023] Open
Abstract
Following acute infection, herpes simplex virus 1 (HSV-1) establishes lifelong latency in neurons, including sensory neurons within trigeminal ganglia. During latency, lytic cycle viral gene expression is silenced. However, stressful stimuli can trigger reactivation from latency. The viral tegument protein, VP-16, transactivates all immediate early (IE) promoters during productive infection. Conversely, cellular factors are expected to trigger viral gene expression during early stages of reactivation from latency and in non-neuronal cells that do not support high levels of productive infection. The glucocorticoid receptor (GR), synthetic corticosteroid dexamethasone, and certain stress-induced transcription factors cooperatively transactivate infected cell protein 0 (ICP0) and ICP4 promoters. Since ICP27 protein expression is required for productive infection, we hypothesized that the ICP27 promoter is transactivated by stress-induced transcription factors. New studies have demonstrated that ICP27 enhancer sequences were transactivated by GR and Krüppel-like factor 15 (KLF15). Mutation of a consensus Sp1 binding site within ICP27 enhancer sequences impaired transactivation by GR and KLF15. Chromatin immunoprecipitation studies have demonstrated that GR and KLF15 occupy ICP27 promoter sequences during productive infection. Cells transfected with an ICP27 enhancer fragment revealed the GR and KLF15 occupancy of ICP27 enhancer sequences required the intact Sp1 binding site. Notably, GR and KLF15 form a feed-forward transcription loop in response to stress, suggesting these cellular factors promote viral replication following stressful stimuli.
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Affiliation(s)
| | - Clinton Jones
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Stillwater, OK 74078, USA;
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Dabaghi M, Rasa SMM, Cirri E, Ori A, Neri F, Quaas R, Hilger I. Iron Oxide Nanoparticles Carrying 5-Fluorouracil in Combination with Magnetic Hyperthermia Induce Thrombogenic Collagen Fibers, Cellular Stress, and Immune Responses in Heterotopic Human Colon Cancer in Mice. Pharmaceutics 2021; 13:pharmaceutics13101625. [PMID: 34683917 PMCID: PMC8541380 DOI: 10.3390/pharmaceutics13101625] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 01/01/2023] Open
Abstract
In this study we looked for the main protein pathway regulators which were responsible for the therapeutic impact on colon cancers when combining magnetic hyperthermia with the chemotherapeutic agent 5-fluorouracil (5FU). To this end, chitosan-coated magnetic nanoparticles (MNP) functionalized with 5FU were intratumorally injected into subcutaneous human colon cancer xenografts (HT-29) in mice and exposed to an alternating magnetic field. A decreased tumor growth was found particularly for the combined thermo-chemotherapy vs. the corresponding monotherapies. By using computational analysis of the tumor proteome, we found upregulated functional pathway categories termed "cellular stress and injury", "intracellular second messenger and nuclear receptor signaling", "immune responses", and "growth proliferation and development". We predict TGF-beta, and other mediators, as important upstream regulators. In conclusion, our findings show that the combined thermo-chemotherapy induces thrombogenic collagen fibers which are able to impair tumor nutrient supply. Further on, we associate several responses to the recognition of damage associated molecular patterns (DAMPs) by phagocytic cells, which immigrate into the tumor area. The activation of some pathways associated with cell survival implies the necessity to conduct multiple therapy sessions in connection with a corresponding monitoring, which could possibly be performed on the base of the identified protein regulators.
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Affiliation(s)
- Mohammad Dabaghi
- Institute of Diagnostic and Interventional Radiology, Jena University Hospital, Friedrich Schiller University Jena, Am Klinikum 1, D-07740 Jena, Germany;
| | - Seyed Mohammad Mahdi Rasa
- Leibniz Institute on Aging Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany; (S.M.M.R.); (E.C.); (A.O.); (F.N.)
| | - Emilio Cirri
- Leibniz Institute on Aging Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany; (S.M.M.R.); (E.C.); (A.O.); (F.N.)
| | - Alessandro Ori
- Leibniz Institute on Aging Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany; (S.M.M.R.); (E.C.); (A.O.); (F.N.)
| | - Francesco Neri
- Leibniz Institute on Aging Fritz Lipmann Institute (FLI), Beutenbergstraße 11, 07745 Jena, Germany; (S.M.M.R.); (E.C.); (A.O.); (F.N.)
| | - Rainer Quaas
- Chemicell GmbH, Erseburgstrasse 22–23, 12103 Berlin, Germany;
| | - Ingrid Hilger
- Institute of Diagnostic and Interventional Radiology, Jena University Hospital, Friedrich Schiller University Jena, Am Klinikum 1, D-07740 Jena, Germany;
- Correspondence: ; Tel.: +0049-3641-9325921
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21
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Sawant L, Ostler JB, Jones C. A Pioneer Transcription Factor and Type I Nuclear Hormone Receptors Synergistically Activate the Bovine Herpesvirus 1 Infected Cell Protein 0 (ICP0) Early Promoter. J Virol 2021; 95:e0076821. [PMID: 34319779 PMCID: PMC8475507 DOI: 10.1128/jvi.00768-21] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 07/15/2021] [Indexed: 12/26/2022] Open
Abstract
Following bovine herpesvirus 1 (BoHV-1) acute infection of ocular, oral, or nasal cavities, sensory neurons within trigeminal ganglia are an important site for latency. Stress, as mimicked by the synthetic corticosteroid dexamethasone, consistently induces reactivation from latency. Expression of two key viral transcriptional regulatory proteins, BoHV-1 infected cell protein 0 (bICP0) and bICP4, are regulated by sequences within the immediate early promoter (IEtu1). A separate early promoter also drives bICP0 expression, presumably to ensure sufficient levels of this important transcriptional regulatory protein. Productive infection and bICP0 early promoter activity are cooperatively transactivated by Krüppel-like factor 4 (KLF4) and a type I nuclear hormone receptor (NHR), androgen receptor, glucocorticoid receptor, or progesterone receptor. The bICP0 early promoter contains three separate transcriptional enhancers that mediate cooperative transactivation. In contrast to the IEtu1 promoter, the bICP0 early promoter lacks consensus type I NHR binding sites. Consequently, we hypothesized that KLF4 and Sp1 binding sites are essential for type I NHR and KLF4 to transactivate the bICP0 promoter. Mutating KLF4 and Sp1 binding sites in each enhancer domain significantly reduced transactivation by KLF4 and a type I NHR. Chromatin immunoprecipitation (ChIP) studies demonstrated that occupancy of bICP0 early promoter sequences by KLF4 and type I NHR is significantly reduced when KLF4 and/or Sp1 binding sites are mutated. These studies suggest that cooperative transactivation of the bICP0 E promoter by type I NHRs and a stress-induced pioneer transcription factor (KLF4) promote viral replication and spread in neurons or nonneural cells in reproductive tissue. IMPORTANCE Understanding how stressful stimuli and changes in the cellular milieu mediate viral replication and gene expression in the natural host is important for developing therapeutic strategies that impair virus transmission and disease. For example, bovine herpesvirus 1 (BoHV-1) reactivation from latency is consistently induced by the synthetic corticosteroid dexamethasone, which mimics the effects of stress. Furthermore, BoHV-1 infection increases the incidence of abortion in pregnant cows, suggesting that sex hormones stimulate viral growth in certain tissues. Previous studies revealed that type I nuclear hormone receptors (NHRs) (androgen, glucocorticoid, or progesterone) and a pioneer transcription factor, Krüppel-like factor 4 (KLF4), cooperatively transactivate the BoHV-1 infected cell protein 0 (bICP0) early promoter. Transactivation was mediated by Sp1 and/or KLF4 consensus binding sites within the three transcriptional enhancers. These studies underscore the complexity by which BoHV-1 exploits type I NHR fluctuations to enhance viral gene expression, replication, and transmission in the natural host.
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Affiliation(s)
- Laximan Sawant
- Oklahoma State University, College of Veterinary Medicine, Department of Veterinary Pathobiology, Stillwater, Oklahoma, USA
| | - Jeffery B. Ostler
- Oklahoma State University, College of Veterinary Medicine, Department of Veterinary Pathobiology, Stillwater, Oklahoma, USA
| | - Clinton Jones
- Oklahoma State University, College of Veterinary Medicine, Department of Veterinary Pathobiology, Stillwater, Oklahoma, USA
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22
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Hussein S, Khanna P, Yunus N, Gatza ML. Nuclear Receptor-Mediated Metabolic Reprogramming and the Impact on HR+ Breast Cancer. Cancers (Basel) 2021; 13:cancers13194808. [PMID: 34638293 PMCID: PMC8508306 DOI: 10.3390/cancers13194808] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 09/22/2021] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Breast cancer is the most commonly diagnosed and second leading cause of cancer-related deaths in women in the United States, with hormone receptor positive (HR+) tumors representing more than two-thirds of new cases. Recent evidence has indicated that dysregulation of multiple metabolic programs, which can be driven through nuclear receptor activity, is essential for tumor genesis, progression, therapeutic resistance and metastasis. This study will review the current advances in our understanding of the impact and implication of altered metabolic processes driven by nuclear receptors, including hormone-dependent signaling, on HR+ breast cancer. Abstract Metabolic reprogramming enables cancer cells to adapt to the changing microenvironment in order to maintain metabolic energy and to provide the necessary biological macromolecules required for cell growth and tumor progression. While changes in tumor metabolism have been long recognized as a hallmark of cancer, recent advances have begun to delineate the mechanisms that modulate metabolic pathways and the consequence of altered signaling on tumorigenesis. This is particularly evident in hormone receptor positive (HR+) breast cancers which account for approximately 70% of breast cancer cases. Emerging evidence indicates that HR+ breast tumors are dependent on multiple metabolic processes for tumor progression, metastasis, and therapeutic resistance and that changes in metabolic programs are driven, in part, by a number of key nuclear receptors including hormone-dependent signaling. In this review, we discuss the mechanisms and impact of hormone receptor mediated metabolic reprogramming on HR+ breast cancer genesis and progression as well as the therapeutic implications of these metabolic processes in this disease.
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Affiliation(s)
- Shaimaa Hussein
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08903, USA; (S.H.); (P.K.)
- Department of Radiation Oncology, Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ 08903, USA
| | - Pooja Khanna
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08903, USA; (S.H.); (P.K.)
- Department of Radiation Oncology, Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ 08903, USA
- School of Arts and Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ 08903, USA;
| | - Neha Yunus
- School of Arts and Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ 08903, USA;
| | - Michael L. Gatza
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08903, USA; (S.H.); (P.K.)
- Department of Radiation Oncology, Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ 08903, USA
- School of Arts and Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ 08903, USA;
- Correspondence: ; Tel.: +1-732-235-8751
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23
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Weinhouse C. The roles of inducible chromatin and transcriptional memory in cellular defense system responses to redox-active pollutants. Free Radic Biol Med 2021; 170:85-108. [PMID: 33789123 PMCID: PMC8382302 DOI: 10.1016/j.freeradbiomed.2021.03.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 12/17/2022]
Abstract
People are exposed to wide range of redox-active environmental pollutants. Air pollution, heavy metals, pesticides, and endocrine disrupting chemicals can disrupt cellular redox status. Redox-active pollutants in our environment all trigger their own sets of specific cellular responses, but they also activate a common set of general stress responses that buffer the cell against homeostatic insults. These cellular defense system (CDS) pathways include the heat shock response, the oxidative stress response, the hypoxia response, the unfolded protein response, the DNA damage response, and the general stress response mediated by the stress-activated p38 mitogen-activated protein kinase. Over the past two decades, the field of environmental epigenetics has investigated epigenetic responses to environmental pollutants, including redox-active pollutants. Studies of these responses highlight the role of chromatin modifications in controlling the transcriptional response to pollutants and the role of transcriptional memory, often referred to as "epigenetic reprogramming", in predisposing previously exposed individuals to more potent transcriptional responses on secondary challenge. My central thesis in this review is that high dose or chronic exposure to redox-active pollutants leads to transcriptional memories at CDS target genes that influence the cell's ability to mount protective responses. To support this thesis, I will: (1) summarize the known chromatin features required for inducible gene activation; (2) review the known forms of transcriptional memory; (3) discuss the roles of inducible chromatin and transcriptional memory in CDS responses that are activated by redox-active environmental pollutants; and (4) propose a conceptual framework for CDS pathway responsiveness as a readout of total cellular exposure to redox-active pollutants.
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Affiliation(s)
- Caren Weinhouse
- Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, OR, 97214, USA.
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24
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Lifshitz K, Ber Y, Margel D. Role of Metabolic Syndrome in Prostate Cancer Development. Eur Urol Focus 2021; 7:508-512. [PMID: 33994167 DOI: 10.1016/j.euf.2021.04.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 04/05/2021] [Accepted: 04/26/2021] [Indexed: 12/24/2022]
Abstract
Prostate cancer and metabolic syndrome are common among men in the Western world. As the population grows older and life expectancy increases, the rates of both diseases are expected to increase. We now recognize that metabolic syndrome and prostate cancer interact. Metabolic syndrome may be a risk factor for prostate cancer and may also worsen outcomes. At the same time, treatment for prostate cancer may exacerbate metabolic syndrome and cardiac disease. This mini-review summarizes current evidence and puts it into clinical prospective. PATIENT SUMMARY: Metabolic syndrome is now a global epidemic. It is characterized by obesity, insulin resistance, high blood pressure, and high blood lipids. There is a complex interaction between metabolic syndrome and the risk of prostate cancer, as treatment of one disease may affect the other.
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Affiliation(s)
| | - Yaara Ber
- Department of Urology, Rabin Medical Center, Petah Tikva, Israel
| | - David Margel
- Department of Urology, Rabin Medical Center, Petah Tikva, Israel; Division of Surgery, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
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25
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Quigley JA, Logsdon MK, Turner CA, Gonzalez IL, Leonardo NB, Becker JB. Sex differences in vulnerability to addiction. Neuropharmacology 2021; 187:108491. [PMID: 33567305 PMCID: PMC7979496 DOI: 10.1016/j.neuropharm.2021.108491] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 01/27/2021] [Accepted: 02/04/2021] [Indexed: 02/07/2023]
Abstract
This article reviews evidence for sex differences in vulnerability to addiction with an emphasis on the neural mechanisms underlying these differences. Sex differences in the way that the gonadal hormone, estradiol, interacts with the ascending telencephalic dopamine system results in sex differences in motivated behaviors, including drug-seeking. In rodents, repeated psychostimulant exposure enhances incentive sensitization to a greater extent in females than males. Estradiol increases females' motivation to attain psychostimulants and enhances the value of drug related cues, which ultimately increases their susceptibility towards spontaneous relapse. This, along with females' dampened ability to alter decisions regarding risky behaviors, enhances their vulnerability for escalation of drug use. In males, recent evidence suggests that estradiol may be protective against susceptibility towards drug-preference. Sex differences in the actions of estradiol are reviewed to provide a foundation for understanding how future research might enhance understanding of the mechanisms of sex differences in addiction-related behaviors, which are dependent on estradiol receptor (ER) subtype and the region of the brain they are acting in. A comprehensive review of the distribution of ERα, ERβ, and GPER1 throughout the rodent brain are provided along with a discussion of the possible ways in which these patterns differentially regulate drug-taking between the sexes. The article concludes with a brief discussion of the actions of gonadal hormones on the circuitry of the stress system, including the hypothalamic pituitary adrenal axis and regulation of corticotropin-releasing factor. Sex differences in the stress system can also contribute to females' enhanced vulnerability towards addiction.
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Affiliation(s)
- Jacqueline A Quigley
- Psychology Department, Ann Arbor MI, 48109 USA; Michigan Neuroscience Institute, University of Michigan, Ann Arbor MI, 48109 USA
| | - Molly K Logsdon
- Michigan Neuroscience Institute, University of Michigan, Ann Arbor MI, 48109 USA
| | - Christopher A Turner
- Psychology Department, Ann Arbor MI, 48109 USA; Michigan Neuroscience Institute, University of Michigan, Ann Arbor MI, 48109 USA
| | - Ivette L Gonzalez
- Psychology Department, Ann Arbor MI, 48109 USA; Michigan Neuroscience Institute, University of Michigan, Ann Arbor MI, 48109 USA
| | - N B Leonardo
- Michigan Neuroscience Institute, University of Michigan, Ann Arbor MI, 48109 USA
| | - Jill B Becker
- Psychology Department, Ann Arbor MI, 48109 USA; Michigan Neuroscience Institute, University of Michigan, Ann Arbor MI, 48109 USA.
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26
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Sawant L, Thunuguntla P, Jones C. Cooperative activation of bovine herpesvirus 1 productive infection and viral regulatory promoters by androgen receptor and Krüppel-like transcription factors 4 and 15. Virology 2021; 552:63-72. [PMID: 33065464 DOI: 10.1016/j.virol.2020.08.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 08/12/2020] [Accepted: 08/28/2020] [Indexed: 01/01/2023]
Abstract
Bovine herpesvirus 1 (BoHV-1), a significant viral pathogen, establishes latency in sensory neurons. The viral genome contains more than 100 consensus glucocorticoid receptor (GR) regulatory elements (GREs): consequently, stress stimulates viral replication and reactivation from latency. The immediate early transcription unit 1 (IEtu1) and bICP0 early promoters are transactivated by GR and synthetic corticosteroid dexamethasone. The androgen receptor (AR), like GR, is a Type 1 nuclear hormone receptor that binds and stimulates certain promoters containing GREs. Consequently, we hypothesized AR and 5α-Dihydrotestosterone (DHT) stimulate productive infection and key viral promoters. New studies demonstrated AR, DHT, and Krüppel like transcription factor 4 (KLF4) cooperatively stimulated productive infection and bICP0 E promoter activity in mouse neuroblastoma cells (Neuro-2A). KLF15 also cooperated with AR and DHT to stimulate IEtu1 promoter activity. We suggest AR and testosterone increase the prevalence of virus in semen by stimulating viral gene expression and replication.
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Affiliation(s)
- Laximan Sawant
- Oklahoma State University, Center for Veterinary Health Sciences, Department of Veterinary Pathobiology, Stillwater, OK, USA
| | - Prasanth Thunuguntla
- Oklahoma State University, Center for Veterinary Health Sciences, Department of Veterinary Pathobiology, Stillwater, OK, USA
| | - Clinton Jones
- Oklahoma State University, Center for Veterinary Health Sciences, Department of Veterinary Pathobiology, Stillwater, OK, USA.
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27
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Bae S, Zeng S, Park-Min KH. Nuclear receptors in osteoclasts. Curr Opin Pharmacol 2020; 53:8-17. [PMID: 32569976 PMCID: PMC7669703 DOI: 10.1016/j.coph.2020.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 03/09/2020] [Accepted: 03/23/2020] [Indexed: 02/08/2023]
Abstract
Osteoclasts are bone-resorbing cells that play an essential role in the remodeling of bone under physiological conditions and numerous pathological conditions, such as osteoporosis, bone metastasis, and inflammatory bone erosion. Nuclear receptors are crucial to various physiological processes, including metabolism, development and inflammation, and function as transcription factors to activate target genes. Synthetic ligands of nuclear receptors are also available for the treatment of metabolic and inflammatory diseases. However, dysregulated bone phenotypes have been documented in patients who take synthetic nuclear receptor ligands as a therapy. Therefore, the effect of nuclear receptors on bone cells has become an important area of exploration; additionally, the molecular mechanisms underlying the action of nuclear receptors in osteoclasts have not been completely understood. Here, we cover the recent progress in our understanding of the roles of nuclear receptors in osteoclasts.
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Affiliation(s)
- Seyeon Bae
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021, USA; Department of Medicine, Weill Cornell Medical College, New York, NY 10065, USA
| | - Steven Zeng
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021, USA
| | - Kyung-Hyun Park-Min
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021, USA; Department of Medicine, Weill Cornell Medical College, New York, NY 10065, USA; BCMB Allied Program, Weill Cornell Graduate School of Medical Sciences, New York, NY 10021, USA.
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28
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Gegenhuber B, Tollkuhn J. Signatures of sex: Sex differences in gene expression in the vertebrate brain. WILEY INTERDISCIPLINARY REVIEWS. DEVELOPMENTAL BIOLOGY 2020; 9:e348. [PMID: 31106965 PMCID: PMC6864223 DOI: 10.1002/wdev.348] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/10/2019] [Accepted: 04/22/2019] [Indexed: 12/13/2022]
Abstract
Women and men differ in disease prevalence, symptoms, and progression rates for many psychiatric and neurological disorders. As more preclinical studies include both sexes in experimental design, an increasing number of sex differences in physiology and behavior have been reported. In the brain, sex-typical behaviors are thought to result from sex-specific patterns of neural activity in response to the same sensory stimulus or context. These differential firing patterns likely arise as a consequence of underlying anatomic or molecular sex differences. Accordingly, gene expression in the brains of females and males has been extensively investigated, with the goal of identifying biological pathways that specify or modulate sex differences in brain function. However, there is surprisingly little consensus on sex-biased genes across studies and only a handful of robust candidates have been pursued in the follow-up experiments. Furthermore, it is not known how or when sex-biased gene expression originates, as few studies have been performed in the developing brain. Here we integrate molecular genetic and neural circuit perspectives to provide a conceptual framework of how sex differences in gene expression can arise in the brain. We detail mechanisms of gene regulation by steroid hormones, highlight landmark studies in rodents and humans, identify emerging themes, and offer recommendations for future research. This article is categorized under: Nervous System Development > Vertebrates: General Principles Gene Expression and Transcriptional Hierarchies > Regulatory Mechanisms Gene Expression and Transcriptional Hierarchies > Sex Determination.
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Affiliation(s)
- Bruno Gegenhuber
- Watson School of Biological Sciences, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York
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29
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Muralidhar S, Filia A, Nsengimana J, Poźniak J, O'Shea SJ, Diaz JM, Harland M, Randerson-Moor JA, Reichrath J, Laye JP, van der Weyden L, Adams DJ, Bishop DT, Newton-Bishop J. Vitamin D-VDR Signaling Inhibits Wnt/β-Catenin-Mediated Melanoma Progression and Promotes Antitumor Immunity. Cancer Res 2019; 79:5986-5998. [PMID: 31690667 DOI: 10.1158/0008-5472.can-18-3927] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/12/2019] [Accepted: 10/01/2019] [Indexed: 11/16/2022]
Abstract
1α,25-Dihydroxyvitamin D3 signals via the vitamin D receptor (VDR). Higher serum vitamin D is associated with thinner primary melanoma and better outcome, although a causal mechanism has not been established. As patients with melanoma commonly avoid sun exposure, and consequent vitamin D deficiency might worsen outcomes, we interrogated 703 primary melanoma transcriptomes to understand the role of vitamin D-VDR signaling and replicated the findings in The Cancer Genome Atlas metastases. VDR expression was independently protective for melanoma-related death in both primary and metastatic disease. High tumor VDR expression was associated with upregulation of pathways mediating antitumor immunity and corresponding with higher imputed immune cell scores and histologically detected tumor-infiltrating lymphocytes. High VDR-expressing tumors had downregulation of proliferative pathways, notably Wnt/β-catenin signaling. Deleterious low VDR levels resulted from promoter methylation and gene deletion in metastases. Vitamin D deficiency (<25 nmol/L ∼ 10 ng/mL) shortened survival in primary melanoma in a VDR-dependent manner. In vitro functional validation studies showed that elevated vitamin D-VDR signaling inhibited Wnt/β-catenin signaling genes. Murine melanoma cells overexpressing VDR produced fewer pulmonary metastases than controls in tail-vein metastasis assays. In summary, vitamin D-VDR signaling contributes to controlling pro-proliferative/immunosuppressive Wnt/β-catenin signaling in melanoma and this is associated with less metastatic disease and stronger host immune responses. This is evidence of a causal relationship between vitamin D-VDR signaling and melanoma survival, which should be explored as a therapeutic target in primary resistance to checkpoint blockade. SIGNIFICANCE: VDR expression could potentially be used as a biomarker to stratify patients with melanoma that may respond better to immunotherapy.
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Affiliation(s)
- Sathya Muralidhar
- University of Leeds School of Medicine, Leeds, United Kingdom
- Division of Molecular Pathology, The Institute of Cancer Research, London, United Kingdom
| | - Anastasia Filia
- Centre for Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | | | - Joanna Poźniak
- University of Leeds School of Medicine, Leeds, United Kingdom
- Laboratory for Molecular Cancer Biology, VIB Center for Cancer Biology, KU Leuven, Leuven, Belgium
- Department of Oncology, KU Leuven, Leuven, Belgium
| | - Sally J O'Shea
- University of Leeds School of Medicine, Leeds, United Kingdom
- Faculty of Medicine and Health, University College Cork, Cork, Ireland
- Mater Private Hospital Cork, Citygate, Mahon, Cork, Ireland
| | - Joey M Diaz
- University of Leeds School of Medicine, Leeds, United Kingdom
| | - Mark Harland
- University of Leeds School of Medicine, Leeds, United Kingdom
| | | | - Jörg Reichrath
- Center for Clinical and Experimental Photodermatology, The Saarland University Hospital, Homburg, Germany
| | - Jonathan P Laye
- University of Leeds School of Medicine, Leeds, United Kingdom
| | - Louise van der Weyden
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, United Kingdom
| | - David J Adams
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, United Kingdom
| | - D T Bishop
- University of Leeds School of Medicine, Leeds, United Kingdom
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30
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Barton M, Meyer MR, Prossnitz ER. Nox1 downregulators: A new class of therapeutics. Steroids 2019; 152:108494. [PMID: 31518594 PMCID: PMC6891104 DOI: 10.1016/j.steroids.2019.108494] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/29/2019] [Accepted: 09/06/2019] [Indexed: 02/07/2023]
Abstract
Chronic non-communicable diseases share the pathomechanism of increased reactive oxygen species (ROS) production by nicotinamide adenine dinucleotide phosphate (NADPH) oxidases, known as Nox. The recent discovery that expression of Nox1, a Nox isoform that has been implicated in the pathogenesis of cardiovascular and kidney disease and cancer is regulated by the expression and activity of G protein-coupled estrogen receptor (GPER) led to the identification of orally active small-molecule GPER blockers as selective Nox1 downregulators (NDRs). Preclinical studies using NDRs have demonstrated beneficial effects in vascular disease, hypertension, and glomerular renal injury. These findings suggest the therapeutic potential of NDRs, which reduce Nox1 protein levels, not only for cardiovascular disease conditions including arterial hypertension, pulmonary hypertension, heart failure with preserved ejection fraction (HFpEF), and chronic renal disease, but also for other non-communicable diseases, such as cerebrovascular disease and vascular dementia, Alzheimer's disease, autoimmune diseases and cancer, in which elevated Nox1-derived ROS production plays a causal role.
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Affiliation(s)
- Matthias Barton
- Molecular Internal Medicine, University of Zürich, Zürich, Switzerland; Andreas Grüntzig Foundation, Zürich, Switzerland.
| | - Matthias R Meyer
- Division of Cardiology, Triemli City Hospital, Zürich, Switzerland; Institute of Primary Care, University of Zürich, Zürich, Switzerland
| | - Eric R Prossnitz
- Division of Molecular Medicine, Department of Internal Medicine, Health Sciences Center, Albuquerque, NM, USA; University of New Mexico Comprehensive Cancer Center, University of New Mexico, Health Sciences Center, Albuquerque, NM, USA
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31
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Flanagan JJ, Neklesa TK. Targeting Nuclear Receptors with PROTAC degraders. Mol Cell Endocrinol 2019; 493:110452. [PMID: 31125586 DOI: 10.1016/j.mce.2019.110452] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/13/2019] [Accepted: 05/19/2019] [Indexed: 01/01/2023]
Abstract
Nuclear receptors comprise a class of intracellular transcription factors whose major role is to act as sensors of various stimuli and to convert the external signal into a transcriptional output. Nuclear receptors (NRs) achieve this by possessing a ligand binding domain, which can bind cell permeable agonists, a DNA-binding domain, which binds the upstream sequences of target genes, and a regulatory domain that recruits the transcriptional machinery. The ligand binding alters the activation state of the NR, either by activating or inactivating its transcriptional output. Given the central role of NRs in signal transduction, many currently approved therapeutics modulate the activity of NRs. Here we discuss how PROTAC degraders afford a novel approach to abrogate the downstream signaling activity of NRs. We highlight six broad functional reasons why PROTAC degraders are preferable to the classical ligand binding pocket antagonists, with specific examples provided for each category. Lastly, as Androgen Receptor and Estrogen Receptor PROTAC degraders are being pursued as treatment for prostate cancer and breast cancer, respectively, a rationale is provided for the translational utility for the degradation of these two NRs.
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Affiliation(s)
| | - Taavi K Neklesa
- Halda Therapeutics, 23 Business Park, Branford, CT, 06405, USA.
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32
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Manjari P, Hyder I, Dang AK. Implantation associated divergence in neutrophil glucocorticoid and cysteine-X-cysteine receptor genes in cattle. Mol Biol Rep 2019; 46:5493-5499. [PMID: 31165367 DOI: 10.1007/s11033-019-04865-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 05/09/2019] [Indexed: 10/26/2022]
Abstract
The differential roles of Interferon-tau (IFNT) and Progesterone (P4) in triggering pro- and anti-inflammatory responses during peri-implantation period were assessed in cows. An ex vivo study was done by isolating neutrophils from the animals post artificial insemination (AI) at defined intervals and analyzing the expression changes of Glucocorticoid receptor-α (GRα) and Interleukin-8 receptor (CXCR1) genes. An in vitro study was also done isolating neutrophils from prepubertal heifers subjecting them to IFNT and Progesterone P4 supplementation separately. We observed that from day 14 post Artificial Insemination, there is a significant up-regulation of neutrophil GRα and CXCR1 in pregnant and non-pregnant cows respectively. The in vitro study showed that IFNT significantly up-regulates GRα whereas P4 significantly up-regulates CXCR1. The total leukocyte count and neutrophil count were also significantly higher in non-pregnant cows. We conclude that IFNT efficiently mediates neutrophil immunosuppression during peri-implantation period in cows by interacting with Interleukin 8 receptor and can also exert ligand independent actions on GRα.
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Affiliation(s)
- P Manjari
- Krishi Vigyan Kendra, KVK Venkatagiri (YSR Horticulture University), Nellore, Andhra Pradesh, 524132, India.
| | - Iqbal Hyder
- Department of Veterinary Physiology, NTR CVSc, Gannavaram, 521102, India.,Institute of Farm Animal Genetics (FLI), Mariensee, 31535, Neustadt, Germany
| | - A K Dang
- Division of Dairy Cattle Physiology, ICAR-NDRI, Karnal, Haryana, 132001, India
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33
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Mazaira GI, Zgajnar NR, Lotufo CM, Daneri-Becerra C, Sivils JC, Soto OB, Cox MB, Galigniana MD. Nuclear Receptors: A Historical Perspective. Methods Mol Biol 2019; 1966:1-5. [PMID: 31041734 DOI: 10.1007/978-1-4939-9195-2_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
In this chapter, we summarize the birth of the field of nuclear receptors. These receptors exhibit a multitude of roles in cell biology and hence have attracted a great deal of interest in the drug discovery field. It is not certain whether these receptors evolved independently or an ancestral protein acquired various functions upon binding to preexisting small molecules, ligands. Currently, members of this receptor superfamily are categorized in six groups, including "orphan receptors." Research in the area has resulted in several clinically used drugs and continues to reveal further previously unknown roles for these receptors paving the road toward more valuable discoveries in the future.
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Affiliation(s)
- Gisela I Mazaira
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Nadia R Zgajnar
- Instituto de Biología y Medicina Experimental-CONICET, Buenos Aires, Argentina
| | - Cecilia M Lotufo
- Instituto de Biología y Medicina Experimental-CONICET, Buenos Aires, Argentina
| | | | - Jeffrey C Sivils
- Department of Biological Sciences and Border Biomedical Research Center, University of Texas at El Paso, El Paso, TX, USA
| | - Olga B Soto
- Department of Biological Sciences and Border Biomedical Research Center, University of Texas at El Paso, El Paso, TX, USA
| | - Marc B Cox
- Department of Biological Sciences and Border Biomedical Research Center, University of Texas at El Paso, El Paso, TX, USA
| | - Mario D Galigniana
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.
- Instituto de Biología y Medicina Experimental-CONICET, Buenos Aires, Argentina.
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34
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Vps11 and Vps18 of Vps-C membrane traffic complexes are E3 ubiquitin ligases and fine-tune signalling. Nat Commun 2019; 10:1833. [PMID: 31015428 PMCID: PMC6478910 DOI: 10.1038/s41467-019-09800-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 04/02/2019] [Indexed: 12/11/2022] Open
Abstract
In response to extracellular signals, many signalling proteins associated with the plasma membrane are sorted into endosomes. This involves endosomal fusion, which depends on the complexes HOPS and CORVET. Whether and how their subunits themselves modulate signal transduction is unknown. We show that Vps11 and Vps18 (Vps11/18), two common subunits of the HOPS/CORVET complexes, are E3 ubiquitin ligases. Upon overexpression of Vps11/Vps18, we find perturbations of ubiquitination in signal transduction pathways. We specifically demonstrate that Vps11/18 regulate several signalling factors and pathways, including Wnt, estrogen receptor α (ERα), and NFκB. For ERα, we demonstrate that the Vps11/18-mediated ubiquitination of the scaffold protein PELP1 impairs the activation of ERα by c-Src. Thus, proteins involved in membrane traffic, in addition to performing their well-described role in endosomal fusion, fine-tune signalling in several different ways, including through ubiquitination.
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35
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Veras Ribeiro Filho H, Tambones IL, Mariano Gonçalves Dias M, Bernardi Videira N, Bruder M, Amorim Amato A, Migliorini Figueira AC. Modulation of nuclear receptor function: Targeting the protein-DNA interface. Mol Cell Endocrinol 2019; 484:1-14. [PMID: 30703486 DOI: 10.1016/j.mce.2019.01.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/25/2019] [Accepted: 01/25/2019] [Indexed: 02/02/2023]
Abstract
Nuclear receptors (NRs) are a superfamily of ligand-dependent transcription factors that modulate several biological processes. Traditionally, modulation of NRs has been focused on the development of ligands that recognize and bind to the ligand binding domain (LBD), resulting in activation or repression of transcription through the recruitment of coregulators. However, for more severe diseases, such as breast and prostate cancer, the conventional treatment addressing LBD modulation is not always successful, due to tumor resistance. To overcome these challenges and aiming to modulate NR activity by inhibiting the NR-DNA interaction, new studies focus on the development of molecules targeting alternative sites and domains on NRs. Here, we discuss two different approaches for this alternative NR modulation: one targeting the NR DNA binding domain (DBD); and the other targeting the DNA sites recognized by NRs. Our aim is to present the challenges and perspectives for developing specific inhibitors for each purpose, alongside with already reported examples.
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Affiliation(s)
- Helder Veras Ribeiro Filho
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP, 13083-970, Brazil; Graduate Program in Biosciences and Technology of Bioactive Products, Institute of Biology, State University of Campinas (Unicamp), Campinas, 13083-970, Brazil
| | - Izabella Luisa Tambones
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP, 13083-970, Brazil; Graduate Program in Biosciences and Technology of Bioactive Products, Institute of Biology, State University of Campinas (Unicamp), Campinas, 13083-970, Brazil
| | - Marieli Mariano Gonçalves Dias
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP, 13083-970, Brazil; Graduate Program in Molecular and Functional Biology, Institute of Biology, State University of Campinas (Unicamp), Campinas, SP, 13083-970, Brazil
| | - Natalia Bernardi Videira
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP, 13083-970, Brazil
| | - Marjorie Bruder
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP, 13083-970, Brazil
| | - Angélica Amorim Amato
- Laboratory of Molecular Pharmacology, Department of Pharmaceutical Science, University of Brasilia (UnB), Brasília, DF, 70910-900, Brazil
| | - Ana Carolina Migliorini Figueira
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP, 13083-970, Brazil.
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36
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Fuentes N, Silveyra P. Estrogen receptor signaling mechanisms. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2019; 116:135-170. [PMID: 31036290 DOI: 10.1016/bs.apcsb.2019.01.001] [Citation(s) in RCA: 483] [Impact Index Per Article: 96.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The primary female sex hormones, estrogens, are responsible for the control of functions of the female reproductive system, as well as the development of secondary sexual characteristics that appear during puberty and sexual maturity. Estrogens exert their actions by binding to specific receptors, the estrogen receptors (ERs), which in turn activate transcriptional processes and/or signaling events that result in the control of gene expression. These actions can be mediated by direct binding of estrogen receptor complexes to specific sequences in gene promoters (genomic effects), or by mechanisms that do not involve direct binding to DNA (non-genomic effects). Whether acting via direct nuclear effects, indirect non-nuclear actions, or a combination of both, the effects of estrogens on gene expression are controlled by highly regulated complex mechanisms. In this chapter, we summarize the knowledge gained in the past 60years since the discovery of the estrogen receptors on the mechanisms governing estrogen-mediated gene expression. We provide an overview of estrogen biosynthesis, and we describe the main mechanisms by which the female sex hormone controls gene transcription in different tissues and cell types. Specifically, we address the molecular events governing regulation of gene expression via the nuclear estrogen receptors (ERα, and ERβ) and the membrane estrogen receptor (GPER1). We also describe mechanisms of cross-talk between signaling cascades activated by both nuclear and membrane estrogen receptors. Finally, we discuss natural compounds that are able to target specific estrogen receptors and their implications for human health and medical therapeutics.
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Affiliation(s)
- Nathalie Fuentes
- Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Patricia Silveyra
- Department of Pediatrics, The Pennsylvania State University College of Medicine, Hershey, PA, United States; The University of North Carolina at Chapel Hill, School of Nursing, Chapel Hill, NC, United States.
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37
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Annalora AJ, Jozic M, Marcus CB, Iversen PL. Alternative splicing of the vitamin D receptor modulates target gene expression and promotes ligand-independent functions. Toxicol Appl Pharmacol 2018; 364:55-67. [PMID: 30552932 DOI: 10.1016/j.taap.2018.12.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/04/2018] [Accepted: 12/10/2018] [Indexed: 02/07/2023]
Abstract
Alternative splicing modulates gene function by creating splice variants with alternate functions or non-coding RNA activity. Naturally occurring variants of nuclear receptor (NR) genes with dominant negative or gain-of-function phenotypes have been documented, but their cellular roles, regulation, and responsiveness to environmental stress or disease remain unevaluated. Informed by observations that class I androgen and estrogen receptor variants display ligand-independent signaling in human cancer tissues, we questioned whether the function of class II NRs, like the vitamin D receptor (VDR), would also respond to alternative splicing regulation. Artificial VDR constructs lacking exon 3 (Dex3-VDR), encoding part of the DNA binding domain (DBD), and exon 8 (Dex8-VDR), encoding part of the ligand binding domain (LBD), were transiently transfected into DU-145 cells and stably-integrated into Caco-2 cells to study their effect on gene expression and cell viability. Changes in VDR promoter signaling were monitored by the expression of target genes (e.g. CYP24A1, CYP3A4 and CYP3A5). Ligand-independent VDR signaling was observed in variants lacking exon 8, and a significant loss of gene suppressor function was documented for variants lacking exon 3. The gain-of-function behavior of the Dex8-VDR variant was recapitulated in vitro using antisense oligonucleotides (ASO) that induce the skipping of exon 8 in wild-type VDR. ASO targeting the splice acceptor site of exon 8 significantly stimulated ligand-independent VDR reporter activity and the induction of CYP24A1 above controls. These results demonstrate how alternative splicing can re-program NR gene function, highlighting novel mechanisms of toxicity and new opportunities for the use of splice-switching oligonucleotides (SSO) in precision medicine.
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Affiliation(s)
- Andrew J Annalora
- Department of Environmental and Molecular Toxicology, Oregon State University, 1007 Agriculture & Life Sciences Building, Corvallis, OR 97331; USA.
| | - Marija Jozic
- Department of Environmental and Molecular Toxicology, Oregon State University, 1007 Agriculture & Life Sciences Building, Corvallis, OR 97331; USA
| | - Craig B Marcus
- Department of Environmental and Molecular Toxicology, Oregon State University, 1007 Agriculture & Life Sciences Building, Corvallis, OR 97331; USA
| | - Patrick L Iversen
- Department of Environmental and Molecular Toxicology, Oregon State University, 1007 Agriculture & Life Sciences Building, Corvallis, OR 97331; USA; LS Pharma, 884 Park St., Lebanon, OR 97355; USA
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38
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Mazaira GI, Zgajnar NR, Lotufo CM, Daneri-Becerra C, Sivils JC, Soto OB, Cox MB, Galigniana MD. The Nuclear Receptor Field: A Historical Overview and Future Challenges. NUCLEAR RECEPTOR RESEARCH 2018; 5:101320. [PMID: 30148160 PMCID: PMC6108593 DOI: 10.11131/2018/101320] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
In this article we summarize the birth of the field of nuclear receptors, the discovery of untransformed and transformed isoforms of ligand-binding macromolecules, the discovery of the three-domain structure of the receptors, and the properties of the Hsp90-based heterocomplex responsible for the overall structure of the oligomeric receptor and many aspects of the biological effects. The discovery and properties of the subfamily of receptors called orphan receptors is also outlined. Novel molecular aspects of the mechanism of action of nuclear receptors and challenges to resolve in the near future are discussed.
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Affiliation(s)
- Gisela I. Mazaira
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (1428), Argentina
| | - Nadia R. Zgajnar
- Instituto de Biología y Medicina Experimental- CONICET. Buenos Aires (1428), Argentina
| | - Cecilia M. Lotufo
- Instituto de Biología y Medicina Experimental- CONICET. Buenos Aires (1428), Argentina
| | | | - Jeffrey C. Sivils
- Department of Biological Sciences and Border Biomedical Research Center, University of Texas at El Paso, El Paso, TX 79968, USA
| | - Olga B. Soto
- Department of Biological Sciences and Border Biomedical Research Center, University of Texas at El Paso, El Paso, TX 79968, USA
| | - Marc B. Cox
- Department of Biological Sciences and Border Biomedical Research Center, University of Texas at El Paso, El Paso, TX 79968, USA
| | - Mario D. Galigniana
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (1428), Argentina
- Instituto de Biología y Medicina Experimental- CONICET. Buenos Aires (1428), Argentina
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39
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Affiliation(s)
- George Fink
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, 30 Royal Parade, Parkville, Victoria 3010, Australia.
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40
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Berto M, Jean V, Zwart W, Picard D. ERα activity depends on interaction and target site corecruitment with phosphorylated CREB1. Life Sci Alliance 2018; 1:e201800055. [PMID: 30456355 PMCID: PMC6238530 DOI: 10.26508/lsa.201800055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 05/18/2018] [Accepted: 05/22/2018] [Indexed: 12/17/2022] Open
Abstract
The two transcription factors estrogen receptor α (ERα) and cyclic adenosine monophosphate (cAMP)-responsive element binding protein 1 (CREB1) mediate different signals, bind different response elements, and control different transcriptional programs. And yet, results obtained with transfected reporter genes suggested that their activities may intersect. We demonstrate here that CREB1 stimulates and is necessary for ERα activity on a transfected reporter gene and several endogenous targets both in response to its cognate ligand estrogen and to ligand-independent activation by cAMP. The stimulatory activity of CREB1 requires its DNA binding and activation by phosphorylation, and affects the chromatin recruitment of ERα. CREB1 and ERα are biochemically associated and share hundreds to thousands of chromatin binding sites upon stimulation by estrogen and cAMP, respectively. These shared regulatory activities may underlie the anti-apoptotic effects of estrogen and cAMP signaling in ERα-positive breast cancer cells. Moreover, high levels of CREB1 are associated with good prognosis in ERα-positive breast cancer patients, which may be because of its ability to promote ERα functions, thereby maintaining it as a successful therapeutic target.
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Affiliation(s)
- Melissa Berto
- Département de Biologie Cellulaire and Institute of Genetics and Genomics of Geneva, Université de Genève, Genève, Switzerland
| | - Valerie Jean
- Département de Biologie Cellulaire and Institute of Genetics and Genomics of Geneva, Université de Genève, Genève, Switzerland
| | - Wilbert Zwart
- Division of Oncogenomics, Oncode Institute, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Didier Picard
- Département de Biologie Cellulaire and Institute of Genetics and Genomics of Geneva, Université de Genève, Genève, Switzerland
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41
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Hapgood JP, Kaushic C, Hel Z. Hormonal Contraception and HIV-1 Acquisition: Biological Mechanisms. Endocr Rev 2018; 39:36-78. [PMID: 29309550 PMCID: PMC5807094 DOI: 10.1210/er.2017-00103] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 11/27/2017] [Indexed: 12/12/2022]
Abstract
Access to effective affordable contraception is critical for individual and public health. A wide range of hormonal contraceptives (HCs), which differ in composition, concentration of the progestin component, frequency of dosage, and method of administration, is currently available globally. However, the options are rather limited in settings with restricted economic resources that frequently overlap with areas of high HIV-1 prevalence. The predominant contraceptive used in sub-Saharan Africa is the progestin-only three-monthly injectable depot medroxyprogesterone acetate. Determination of whether HCs affect HIV-1 acquisition has been hampered by behavioral differences potentially confounding clinical observational data. Meta-analysis of these studies shows a significant association between depot medroxyprogesterone acetate use and increased risk of HIV-1 acquisition, raising important concerns. No association was found for combined oral contraceptives containing levonorgestrel, nor for the two-monthly injectable contraceptive norethisterone enanthate, although data for norethisterone enanthate are limited. Susceptibility to HIV-1 and other sexually transmitted infections may, however, be dependent on the type of progestin present in the formulation. Several underlying biological mechanisms that may mediate the effect of HCs on HIV-1 and other sexually transmitted infection acquisition have been identified in clinical, animal, and ex vivo studies. A substantial gap exists in the translation of basic research into clinical practice and public health policy. To bridge this gap, we review the current knowledge of underlying mechanisms and biological effects of commonly used progestins. The review sheds light on issues critical for an informed choice of progestins for the identification of safe, effective, acceptable, and affordable contraceptive methods.
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Affiliation(s)
- Janet P Hapgood
- Department of Molecular and Cell Biology, University of Cape Town, Cape Town, South Africa.,Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Charu Kaushic
- Department of Pathology and Molecular Medicine, McMaster University, Ontario, Canada.,McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Zdenek Hel
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama.,Center for AIDS Research, University of Alabama at Birmingham, Birmingham, Alabama
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42
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Natural Anti-Estrogen Receptor Alpha Antibodies Able to Induce Estrogenic Responses in Breast Cancer Cells: Hypotheses Concerning Their Mechanisms of Action and Emergence. Int J Mol Sci 2018; 19:ijms19020411. [PMID: 29385743 PMCID: PMC5855633 DOI: 10.3390/ijms19020411] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 01/24/2018] [Accepted: 01/25/2018] [Indexed: 02/04/2023] Open
Abstract
The detection of human anti-estrogen receptor α antibodies (ERαABs) inducing estrogenic responses in MCF-7 mammary tumor cells suggests their implication in breast cancer emergence and/or evolution. A recent report revealing a correlation between the titer of such antibodies in sera from patients suffering from this disease and the percentage of proliferative cells in samples taken from their tumors supports this concept. Complementary evidence of the ability of ERαABs to interact with an epitope localized within the estradiol-binding core of ERα also argues in its favor. This epitope is indeed inserted in a regulatory platform implicated in ERα-initiated signal transduction pathways and transcriptions. According to some experimental observations, two auto-immune reactions may already be advocated to explain the emergence of ERαABs: one involving probably the idiotypic network to produce antibodies acting as estrogenic secretions and the other based on antibodies able to abrogate the action of a natural ERα inhibitor or to prevent the competitive inhibitory potency of released receptor degradation products able to entrap circulating estrogens and co-activators. All of this information, the aspect of which is mainly fundamental, may open new ways in the current tendency to combine immunological and endocrine approaches for the management of breast cancer.
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43
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Ferrero G, Miano V, Beccuti M, Balbo G, De Bortoli M, Cordero F. Dissecting the genomic activity of a transcriptional regulator by the integrative analysis of omics data. Sci Rep 2017; 7:8564. [PMID: 28819152 PMCID: PMC5561104 DOI: 10.1038/s41598-017-08754-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 07/13/2017] [Indexed: 12/19/2022] Open
Abstract
In the study of genomic regulation, strategies to integrate the data produced by Next Generation Sequencing (NGS)-based technologies in a meaningful ensemble are eagerly awaited and must continuously evolve. Here, we describe an integrative strategy for the analysis of data generated by chromatin immunoprecipitation followed by NGS which combines algorithms for data overlap, normalization and epigenetic state analysis. The performance of our strategy is illustrated by presenting the analysis of data relative to the transcriptional regulator Estrogen Receptor alpha (ERα) in MCF-7 breast cancer cells and of Glucocorticoid Receptor (GR) in A549 lung cancer cells. We went through the definition of reference cistromes for different experimental contexts, the integration of data relative to co-regulators and the overlay of chromatin states as defined by epigenetic marks in MCF-7 cells. With our strategy, we identified novel features of estrogen-independent ERα activity, including FoxM1 interaction, eRNAs transcription and a peculiar ontology of connected genes.
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Affiliation(s)
- Giulio Ferrero
- Center for Molecular Systems Biology, University of Turin, 10043, Orbassano, Turin, Italy.,Dept. of Computer Science, University of Turin, 10149, Turin, Italy.,Dept. of Biological and Clinical Sciences, University of Turin, 10043, Orbassano, Turin, Italy
| | - Valentina Miano
- Center for Molecular Systems Biology, University of Turin, 10043, Orbassano, Turin, Italy.,Dept. of Biological and Clinical Sciences, University of Turin, 10043, Orbassano, Turin, Italy
| | - Marco Beccuti
- Dept. of Computer Science, University of Turin, 10149, Turin, Italy
| | - Gianfranco Balbo
- Center for Molecular Systems Biology, University of Turin, 10043, Orbassano, Turin, Italy.,Dept. of Computer Science, University of Turin, 10149, Turin, Italy
| | - Michele De Bortoli
- Center for Molecular Systems Biology, University of Turin, 10043, Orbassano, Turin, Italy. .,Dept. of Biological and Clinical Sciences, University of Turin, 10043, Orbassano, Turin, Italy.
| | - Francesca Cordero
- Center for Molecular Systems Biology, University of Turin, 10043, Orbassano, Turin, Italy.,Dept. of Computer Science, University of Turin, 10149, Turin, Italy
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44
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Paakinaho V, Presman DM, Ball DA, Johnson TA, Schiltz RL, Levitt P, Mazza D, Morisaki T, Karpova TS, Hager GL. Single-molecule analysis of steroid receptor and cofactor action in living cells. Nat Commun 2017. [PMID: 28635963 PMCID: PMC5482060 DOI: 10.1038/ncomms15896] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Population-based assays have been employed extensively to investigate the interactions of transcription factors (TFs) with chromatin and are often interpreted in terms of static and sequential binding. However, fluorescence microscopy techniques reveal a more dynamic binding behaviour of TFs in live cells. Here we analyse the strengths and limitations of in vivo single-molecule tracking and performed a comprehensive analysis on the intranuclear dwell times of four steroid receptors and a number of known cofactors. While the absolute residence times estimates can depend on imaging acquisition parameters due to sampling bias, our results indicate that only a small proportion of factors are specifically bound to chromatin at any given time. Interestingly, the glucocorticoid receptor and its cofactors affect each other’s dwell times in an asymmetric manner. Overall, our data indicate transient rather than stable TF-cofactors chromatin interactions at response elements at the single-molecule level. Transcription factors (TFs) are thought to regulate gene expression by stably binding to target DNA elements. Here, the authors use single-molecule tracking to analyse the dynamic behaviour of steroid receptors TFs and show that most specific interactions with chromatin are transient and dynamic.
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Affiliation(s)
- Ville Paakinaho
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Building 41, 41 Library Drive, Bethesda, Maryland 20892, USA
| | - Diego M Presman
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Building 41, 41 Library Drive, Bethesda, Maryland 20892, USA
| | - David A Ball
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Building 41, 41 Library Drive, Bethesda, Maryland 20892, USA
| | - Thomas A Johnson
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Building 41, 41 Library Drive, Bethesda, Maryland 20892, USA
| | - R Louis Schiltz
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Building 41, 41 Library Drive, Bethesda, Maryland 20892, USA
| | - Peter Levitt
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Building 41, 41 Library Drive, Bethesda, Maryland 20892, USA
| | - Davide Mazza
- Istituto Scientifico Ospedale San Raffaele, Centro di Imaging Sperimentale e Università Vita-Salute San Raffaele, 20132 Milano, Italy
| | - Tatsuya Morisaki
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Building 41, 41 Library Drive, Bethesda, Maryland 20892, USA
| | - Tatiana S Karpova
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Building 41, 41 Library Drive, Bethesda, Maryland 20892, USA
| | - Gordon L Hager
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Building 41, 41 Library Drive, Bethesda, Maryland 20892, USA
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45
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Anderson AM, Ragan MA. Palmitoylation: a protein S-acylation with implications for breast cancer. NPJ Breast Cancer 2016; 2:16028. [PMID: 28721385 PMCID: PMC5515344 DOI: 10.1038/npjbcancer.2016.28] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 07/25/2016] [Accepted: 07/27/2016] [Indexed: 12/19/2022] Open
Abstract
Protein S-acylation is a reversible post-translational lipid modification that involves linkage of a fatty acid chain predominantly to a cysteine amino acid via a thioester bond. The fatty acid molecule is primarily palmitate, thus the term 'palmitoylation' is more commonly used. Palmitoylation has been found to modulate all stages of protein function including maturational processing, trafficking, membrane anchoring, signaling range and efficacy, and degradation. In breast cancer, palmitoylation has been shown to control the function of commonly dysregulated genes including estrogen receptors, the epidermal growth factor (EGF) family of receptors, and cancer stem cell markers. Importantly, palmitoylation is a critical factor controlling the formation of complexes at the plasma membrane involving tetraspanins, integrins, and gene products that are key to cell-cell communication. During metastasis, cancer cells enhance their metastatic capacity by interacting with stroma and immune cells. Although aberrant palmitoylation could contribute to tumor initiation and growth, its potential role in these cell-cell interactions is of particular interest, as it may provide mechanistic insight into metastasis, including cancer cell-driven immune modulation. Compelling evidence for a role for aberrant palmitoylation in breast cancer remains to be established. To this end, in this review we summarize emerging evidence and highlight pertinent knowledge gaps, suggesting directions for future research.
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Affiliation(s)
- Alison M Anderson
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Mark A Ragan
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
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46
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Segala G, Bennesch M, Pandey D, Hulo N, Picard D. Monoubiquitination of Histone H2B Blocks Eviction of Histone Variant H2A.Z from Inducible Enhancers. Mol Cell 2016; 64:334-346. [DOI: 10.1016/j.molcel.2016.08.034] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 07/22/2016] [Accepted: 08/26/2016] [Indexed: 11/28/2022]
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47
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Bennesch MA, Segala G, Wider D, Picard D. LSD1 engages a corepressor complex for the activation of the estrogen receptor α by estrogen and cAMP. Nucleic Acids Res 2016; 44:8655-8670. [PMID: 27325688 PMCID: PMC5062963 DOI: 10.1093/nar/gkw522] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 05/28/2016] [Indexed: 02/06/2023] Open
Abstract
The estrogen receptor α (ERα) is a transcription factor that can be directly activated by estrogen or indirectly by other signaling pathways. We previously reported that activation of the unliganded ERα by cAMP is mediated by phosphorylation of the transcriptional coactivator CARM1 by protein kinase A (PKA), allowing CARM1 to bind ERα directly. This being insufficient by itself to activate ERα, we looked for additional factors and identified the histone H3 demethylase LSD1 as a substrate of PKA and an important mediator of this signaling crosstalk as well as of the response to estrogen. Surprisingly, ERα engages not only LSD1, but its partners of the CoREST corepressor complex and the molecular chaperone Hsp90. The recruitment of Hsp90 to promote ERα transcriptional activity runs against the steroid receptor paradigm and suggests that it might be involved as an assembly factor or scaffold. In a breast cancer cell line, which is resistant to the anti-estrogen tamoxifen because of constitutively activated PKA, some interactions are constitutive and drug combinations partially rescue tamoxifen sensitivity. In ERα-positive breast cancer patients, high expression of the genes encoding some of these factors correlates with poor prognosis. Thus, these mechanisms might contribute to ERα-driven breast cancer.
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Affiliation(s)
- Marcela A Bennesch
- Département de Biologie Cellulaire, Université de Genève, Sciences III, 30 quai Ernest-Ansermet, CH-1211 Genève 4, Switzerland
| | - Gregory Segala
- Département de Biologie Cellulaire, Université de Genève, Sciences III, 30 quai Ernest-Ansermet, CH-1211 Genève 4, Switzerland
| | - Diana Wider
- Département de Biologie Cellulaire, Université de Genève, Sciences III, 30 quai Ernest-Ansermet, CH-1211 Genève 4, Switzerland
| | - Didier Picard
- Département de Biologie Cellulaire, Université de Genève, Sciences III, 30 quai Ernest-Ansermet, CH-1211 Genève 4, Switzerland
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48
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Hapgood JP, Avenant C, Moliki JM. Glucocorticoid-independent modulation of GR activity: Implications for immunotherapy. Pharmacol Ther 2016; 165:93-113. [PMID: 27288728 DOI: 10.1016/j.pharmthera.2016.06.002] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 05/16/2016] [Indexed: 12/19/2022]
Abstract
Pharmacological doses of glucocorticoids (GCs), acting via the glucocorticoid receptor (GR) to repress inflammation and immune function, remain the most effective therapy in the treatment of inflammatory and immune diseases. Since many patients on GC therapy exhibit GC resistance and severe side-effects, much research is focused on developing more selective GCs and combination therapies, with greater anti-inflammatory potency. GCs mediate their classical genomic transcriptional effects by binding to the cytoplasmic GR, followed by nuclear translocation and modulation of transcription of target genes by direct DNA binding of the GR or its tethering to other transcription factors. Recent evidence suggests, however, that the responses mediated by the GR are much more complex and involve multiple parallel mechanisms integrating simultaneous signals from other receptors, both in the absence and presence of GCs, to shift the sensitivity of a target cell to GCs. The level of cellular stress, immune activation status, or the cell cycle phase may be crucial for determining GC sensitivity and GC responsiveness as well as subcellular localization of the GR and GR levels. Central to the development of new drugs that target GR signaling alone or as add-on therapies, is an in-depth understanding of the molecular mechanisms of GC-independent GR desensitization, priming and activation of the unliganded GR, as well as synergy and cross-talk with other signaling pathways. This review will discuss the information currently available on these topics and their relevance to immunotherapy, as well as identify unanswered questions and future areas of research.
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Affiliation(s)
- Janet P Hapgood
- Department of Molecular and Cell Biology, University of Cape Town, Private Bag X3, Rondebosch, 7700, South Africa.
| | - Chanel Avenant
- Department of Molecular and Cell Biology, University of Cape Town, Private Bag X3, Rondebosch, 7700, South Africa
| | - Johnson M Moliki
- Department of Molecular and Cell Biology, University of Cape Town, Private Bag X3, Rondebosch, 7700, South Africa
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49
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Miano V, Ferrero G, Reineri S, Caizzi L, Annaratone L, Ricci L, Cutrupi S, Castellano I, Cordero F, De Bortoli M. Luminal long non-coding RNAs regulated by estrogen receptor alpha in a ligand-independent manner show functional roles in breast cancer. Oncotarget 2016; 7:3201-16. [PMID: 26621851 PMCID: PMC4823100 DOI: 10.18632/oncotarget.6420] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 11/16/2015] [Indexed: 01/12/2023] Open
Abstract
Estrogen Receptor alpha (ERα) activation by estrogenic hormones induces luminal breast cancer cell proliferation. However, ERα plays also important hormone-independent functions to maintain breast tumor cells epithelial phenotype. We reported previously by RNA-Seq that in MCF-7 cells in absence of hormones ERα down-regulation changes the expression of several genes linked to cellular development, representing a specific subset of estrogen-induced genes. Here, we report regulation of long non-coding RNAs from the same experimental settings. A list of 133 Apo-ERα-Regulated lncRNAs (AER-lncRNAs) was identified and extensively characterized using published data from cancer cell lines and tumor tissues, or experiments on MCF-7 cells. For several features, we ran validation using cell cultures or fresh tumor biopsies. AER-lncRNAs represent a specific subset, only marginally overlapping estrogen-induced transcripts, whose expression is largely restricted to luminal cells and which is able to perfectly classify breast tumor subtypes. The most abundant AER-lncRNA, DSCAM-AS1, is expressed in ERα+ breast carcinoma, but not in pre-neoplastic lesions, and correlates inversely with EMT markers. Down-regulation of DSCAM-AS1 recapitulated, in part, the effect of silencing ERα, i.e. growth arrest and induction of EMT markers. In conclusion, we report an ERα-dependent lncRNA set representing a novel luminal signature in breast cancer cells.
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Affiliation(s)
- Valentina Miano
- Center for Molecular Systems Biology, University of Turin, Turin, Italy
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Giulio Ferrero
- Center for Molecular Systems Biology, University of Turin, Turin, Italy
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
- Department of Computer Science, University of Turin, Turin, Italy
| | - Stefania Reineri
- Center for Molecular Systems Biology, University of Turin, Turin, Italy
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
- Bioindustry Park Silvano Fumero, Turin, Italy
| | - Livia Caizzi
- Center for Molecular Systems Biology, University of Turin, Turin, Italy
- Department of Molecular Biology, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Laura Annaratone
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Laura Ricci
- Center for Molecular Systems Biology, University of Turin, Turin, Italy
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Santina Cutrupi
- Center for Molecular Systems Biology, University of Turin, Turin, Italy
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | | | - Francesca Cordero
- Center for Molecular Systems Biology, University of Turin, Turin, Italy
- Department of Computer Science, University of Turin, Turin, Italy
| | - Michele De Bortoli
- Center for Molecular Systems Biology, University of Turin, Turin, Italy
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
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Okada M, Ohtake F, Nishikawa H, Wu W, Saeki Y, Takana K, Ohta T. Liganded ERα Stimulates the E3 Ubiquitin Ligase Activity of UBE3C to Facilitate Cell Proliferation. Mol Endocrinol 2015; 29:1646-57. [PMID: 26389696 DOI: 10.1210/me.2015-1125] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Estrogen receptor (ER)α is a well-characterized ligand-dependent transcription factor. However, the global picture of its nongenomic functions remains to be illustrated. Here, we demonstrate a novel function of ERα during mitosis that facilitates estrogen-dependent cell proliferation. An E3 ubiquitin ligase, UBE3C, was identified in an ERα complex from estrogen-treated MCF-7 breast cancer cells arrested at mitosis. UBE3C interacts with ERα during mitosis in an estrogen-dependent manner. In vitro, estrogen dramatically stimulates the E3 activity of UBE3C in the presence of ERα. This effect was inhibited by the estrogen antagonist tamoxifen. Importantly, estrogen enhances the ubiquitination of cyclin B1 (CCNB1) and destabilizes CCNB1 during mitosis in a manner dependent on endogenous UBE3C. ERα, UBE3C, and CCNB1 colocalize in prophase nuclei and at metaphase spindles before CCNB1 is degraded in anaphase. Depletion of UBE3C attenuates estrogen-dependent cell proliferation without affecting the transactivation function of ERα. Collectively, these results demonstrate a novel ligand-dependent action of ERα that stimulates the activity of an E3 ligase. The mitotic role of estrogen may contribute to its effects on proliferation in addition to its roles in target gene expression.
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Affiliation(s)
- Maiko Okada
- Department of Translational Oncology (M.O., W.W., T.O.), Institute of Advanced Medical Science (H.N.), St. Marianna University Graduate School of Medicine, Kawasaki 216-8511, Japan; Institute of Molecular and Cellular Biosciences (M.O.), University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Division of Cellular and Molecular Toxicology (F.O.), Biological Safety Research Center, National Institute of Health Sciences, Setagaya-ku, Tokyo 158-8501, Japan; and Laboratory of Protein Metabolism (Y.S., K.T.), Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Fumiaki Ohtake
- Department of Translational Oncology (M.O., W.W., T.O.), Institute of Advanced Medical Science (H.N.), St. Marianna University Graduate School of Medicine, Kawasaki 216-8511, Japan; Institute of Molecular and Cellular Biosciences (M.O.), University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Division of Cellular and Molecular Toxicology (F.O.), Biological Safety Research Center, National Institute of Health Sciences, Setagaya-ku, Tokyo 158-8501, Japan; and Laboratory of Protein Metabolism (Y.S., K.T.), Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Hiroyuki Nishikawa
- Department of Translational Oncology (M.O., W.W., T.O.), Institute of Advanced Medical Science (H.N.), St. Marianna University Graduate School of Medicine, Kawasaki 216-8511, Japan; Institute of Molecular and Cellular Biosciences (M.O.), University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Division of Cellular and Molecular Toxicology (F.O.), Biological Safety Research Center, National Institute of Health Sciences, Setagaya-ku, Tokyo 158-8501, Japan; and Laboratory of Protein Metabolism (Y.S., K.T.), Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Wenwen Wu
- Department of Translational Oncology (M.O., W.W., T.O.), Institute of Advanced Medical Science (H.N.), St. Marianna University Graduate School of Medicine, Kawasaki 216-8511, Japan; Institute of Molecular and Cellular Biosciences (M.O.), University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Division of Cellular and Molecular Toxicology (F.O.), Biological Safety Research Center, National Institute of Health Sciences, Setagaya-ku, Tokyo 158-8501, Japan; and Laboratory of Protein Metabolism (Y.S., K.T.), Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Yasushi Saeki
- Department of Translational Oncology (M.O., W.W., T.O.), Institute of Advanced Medical Science (H.N.), St. Marianna University Graduate School of Medicine, Kawasaki 216-8511, Japan; Institute of Molecular and Cellular Biosciences (M.O.), University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Division of Cellular and Molecular Toxicology (F.O.), Biological Safety Research Center, National Institute of Health Sciences, Setagaya-ku, Tokyo 158-8501, Japan; and Laboratory of Protein Metabolism (Y.S., K.T.), Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Keiji Takana
- Department of Translational Oncology (M.O., W.W., T.O.), Institute of Advanced Medical Science (H.N.), St. Marianna University Graduate School of Medicine, Kawasaki 216-8511, Japan; Institute of Molecular and Cellular Biosciences (M.O.), University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Division of Cellular and Molecular Toxicology (F.O.), Biological Safety Research Center, National Institute of Health Sciences, Setagaya-ku, Tokyo 158-8501, Japan; and Laboratory of Protein Metabolism (Y.S., K.T.), Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Tomohiko Ohta
- Department of Translational Oncology (M.O., W.W., T.O.), Institute of Advanced Medical Science (H.N.), St. Marianna University Graduate School of Medicine, Kawasaki 216-8511, Japan; Institute of Molecular and Cellular Biosciences (M.O.), University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Division of Cellular and Molecular Toxicology (F.O.), Biological Safety Research Center, National Institute of Health Sciences, Setagaya-ku, Tokyo 158-8501, Japan; and Laboratory of Protein Metabolism (Y.S., K.T.), Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
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