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Cheng JN, Frye JB, Whitman SA, Ehsani S, Ali S, Funk JL. Interrogating Estrogen Signaling Pathways in Human ER-Positive Breast Cancer Cells Forming Bone Metastases in Mice. Endocrinology 2024; 165:bqae038. [PMID: 38715255 PMCID: PMC11076418 DOI: 10.1210/endocr/bqae038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Indexed: 05/12/2024]
Abstract
Breast cancer bone metastases (BMET) are incurable, primarily osteolytic, and occur most commonly in estrogen receptor-α positive (ER+) breast cancer. ER+ human breast cancer BMET modeling in mice has demonstrated an estrogen (E2)-dependent increase in tumor-associated osteolysis and bone-resorbing osteoclasts, independent of estrogenic effects on tumor proliferation or bone turnover, suggesting a possible mechanistic link between tumoral ERα-driven osteolysis and ER+ bone progression. To explore this question, inducible secretion of the osteolytic factor, parathyroid hormone-related protein (PTHrP), was utilized as an in vitro screening bioassay to query the osteolytic potential of estrogen receptor- and signaling pathway-specific ligands in BMET-forming ER+ human breast cancer cells expressing ERα, ERß, and G protein-coupled ER. After identifying genomic ERα signaling, also responsibility for estrogen's proliferative effects, as necessary and sufficient for osteolytic PTHrP secretion, in vivo effects of a genomic-only ER agonist, estetrol (E4), on osteolytic ER+ BMET progression were examined. Surprisingly, while pharmacologic effects of E4 on estrogen-dependent tissues, including bone, were evident, E4 did not support osteolytic BMET progression (vs robust E2 effects), suggesting an important role for nongenomic ER signaling in ER+ metastatic progression at this site. Because bone effects of E4 did not completely recapitulate those of E2, the relative importance of nongenomic ER signaling in tumor vs bone cannot be ascertained here. Nonetheless, these intriguing findings suggest that targeted manipulation of estrogen signaling to mitigate ER+ metastatic progression in bone may require a nuanced approach, considering genomic and nongenomic effects of ER signaling on both sides of the tumor/bone interface.
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Affiliation(s)
- Julia N Cheng
- Cancer Biology Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ 85724, USA
| | - Jennifer B Frye
- Department of Medicine, University of Arizona, Tucson, AZ 86724, USA
| | - Susan A Whitman
- Department of Medicine, University of Arizona, Tucson, AZ 86724, USA
| | - Sima Ehsani
- Department of Medicine, University of Arizona, Tucson, AZ 86724, USA
| | - Simak Ali
- Department of Surgery & Cancer, Imperial College London, London W12 0NN, UK
| | - Janet L Funk
- Department of Medicine, University of Arizona, Tucson, AZ 86724, USA
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2
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Roy P, Kandel R, Sawant N, Singh KP. Estrogen-induced reactive oxygen species, through epigenetic reprogramming, causes increased growth in breast cancer cells. Mol Cell Endocrinol 2024; 579:112092. [PMID: 37858609 DOI: 10.1016/j.mce.2023.112092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 10/14/2023] [Accepted: 10/16/2023] [Indexed: 10/21/2023]
Abstract
Despite the progress made in cancer diagnosis and treatment, breast cancer remains the second leading cause of cancer-related death among the women. Exposure to elevated levels of endogenous estrogen or environmental estrogenic chemicals is an important risk factor for breast cancer. Estrogen metabolites and ROS generated during estrogen metabolism are known to play a critical role in estrogen carcinogenesis. However, the molecular mechanisms through which estrogen-induced ROS regulate gene expression is not clear. Epigenetic changes of DNA methylation and histone modifications are known to regulate genes expression. Therefore, the objective of this study was to evaluate whether estrogen-induced ROS, through aberrant expression of epigenetic regulatory genes and epigenetic reprogramming, causes growth of breast cancer cells. Estrogen responsive MCF-7 and T47D human breast cancer cells were exposed to natural estrogen 17 beta-estradiol (E2) and synthetic estrogen Diethylstilbestrol (DES) both alone and in combination with antioxidant N-acetyl cysteine. Effects of NAC-mediated scavenging of estrogen-induced ROS on cell growth, gene expression, and histone modifications were measured. The result of MTT and cell cycle analysis revealed significant abrogation of E2 and DES-induced growth by scavenging ROS through NAC. E2 and DES caused significant changes in expression of epigenetic regulatory genes for DNA methylation and histone modifications as well as changes in both gene activating and repressive marks in the Histone H3. NAC restored the expression of epigenetic regulatory genes and changes in histone marks. Novel findings of this study suggest that estrogen can induce growth of breast cancer cells through ROS-dependent regulation of epigenetic regulatory genes and epigenetic reprogramming of histone marks.
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Affiliation(s)
- Priti Roy
- Department of Environmental Toxicology, Texas Tech University, Lubbock, TX, 79409, USA
| | - Ramji Kandel
- Department of Environmental Toxicology, Texas Tech University, Lubbock, TX, 79409, USA
| | - Neha Sawant
- Department of Environmental Toxicology, Texas Tech University, Lubbock, TX, 79409, USA
| | - Kamaleshwar P Singh
- Department of Environmental Toxicology, Texas Tech University, Lubbock, TX, 79409, USA.
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3
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Das PK, Saha J, Pillai S, Lam AKY, Gopalan V, Islam F. Implications of estrogen and its receptors in colorectal carcinoma. Cancer Med 2023; 12:4367-4379. [PMID: 36207986 PMCID: PMC9972078 DOI: 10.1002/cam4.5242] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/18/2022] [Accepted: 09/01/2022] [Indexed: 11/08/2022] Open
Abstract
Estrogens have been implicated in the pathogenesis of various cancer types, including colorectal carcinoma (CRC). Estrogen receptors such as ERα and ERβ activate intracellular signaling cascades followed by binding to estrogen, resulting in important changes in cellular behaviors. The nuclear estrogen receptors, i.e. ERβ and ERα are responsible for the genomic actions of estrogens, whereas the other receptor, such as G protein-coupled estrogen receptor (GPER) regulates rapid non-genomic actions, which lead to secondary gene expression changes in cells. ERβ, the predominant estrogen receptor expressed in both normal and non-malignant colonic epithelium, has protective roles in colon carcinogenesis. ERβ may exert the anti-tumor effect through selective activation of pro-apoptotic signaling, increasing DNA repair, inhibiting expression of oncogenes, regulating cell cycle progression, and also by changing the micro-RNA pool and DNA-methylation. Thus, a better understanding of the underlying mechanisms of estrogen and its receptors in CRC pathogenesis could provide a new horizon for effective therapeutic development. Furthermore, using synthetic or natural compounds as ER agonists may induce estrogen-mediated anti-cancer activities against colon cancer. In this study, we report the most recent pre-clinical and experimental evidences related to ERs in CRC development. Also, we reviewed the actions of naturally occurring and synthetic compounds, which have a protective role against CRC development by acting as ER agonist.
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Affiliation(s)
- Plabon Kumar Das
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh.,Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Joti Saha
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, Bangladesh
| | - Suja Pillai
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Alfred K-Y Lam
- School of Medicine & Dentistry, Griffith University, Gold Coast, Queensland, Australia
| | - Vinod Gopalan
- School of Medicine & Dentistry, Griffith University, Gold Coast, Queensland, Australia
| | - Farhadul Islam
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh.,Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
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4
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FitzPatrick AM. Is Estrogen a Missing Culprit in Thyroid Eye Disease? Sex Steroid Hormone Homeostasis Is Key to Other Fibrogenic Autoimmune Diseases - Why Not This One? Front Immunol 2022; 13:898138. [PMID: 35784325 PMCID: PMC9248759 DOI: 10.3389/fimmu.2022.898138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
Sex bias in autoimmune disease (AID) prevalence is known, but the role of estrogen in disease progression is more complex. Estrogen can even be protective in some AIDs; but in systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), and systemic sclerosis (SSc), estrogen, its metabolites, and its receptors have been demonstrated to play critical, localized inflammatory roles. Estrogen is instrumental to the fibrosis seen in RA, SLE, SSc and other disease states, including breast cancer and uterine leiomyomas. Fibrotic diseases tend to share a common pattern in which lymphocyte-monocyte interactions generate cytokines which stimulate the deposition of fibrogenic connective tissue. RA, SLE, SSc and thyroid eye disease (TED) have very similar inflammatory and fibrotic patterns-from pathways to tissue type. The thorough investigations that demonstrated estrogen's role in the pathology of RA, SLE, and SSc could, and possibly should, be carried out in TED. One might even expect to find an even greater role for estrogen, and sex steroid homeostasis in TED, given that TED is typically sequalae to Graves' disease (GD), or Hashimoto's disease (HD), and these are endocrine disorders that can create considerable sex steroid hormone dysregulation. This paper highlights the pathophysiology similarities in 4 AIDs, examines the evidence of sex steroid mediated pathology across 3 AIDs and offers a case study and speculation on how this may be germane to TED.
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Yadav A, Yadav SS, Singh S, Dabur R. Natural products: Potential therapeutic agents to prevent skeletal muscle atrophy. Eur J Pharmacol 2022; 925:174995. [PMID: 35523319 DOI: 10.1016/j.ejphar.2022.174995] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 04/19/2022] [Accepted: 04/28/2022] [Indexed: 12/16/2022]
Abstract
The skeletal muscle (SkM) is the largest organ, which plays a vital role in controlling musculature, locomotion, body heat regulation, physical strength, and metabolism of the body. A sedentary lifestyle, aging, cachexia, denervation, immobilization, etc. Can lead to an imbalance between protein synthesis and degradation, which is further responsible for SkM atrophy (SmA). To date, the understanding of the mechanism of SkM mass loss is limited which also restricted the number of drugs to treat SmA. Thus, there is an urgent need to develop novel approaches to regulate muscle homeostasis. Presently, some natural products attained immense attraction to regulate SkM homeostasis. The natural products, i.e., polyphenols (resveratrol, curcumin), terpenoids (ursolic acid, tanshinone IIA, celastrol), flavonoids, alkaloids (tomatidine, magnoflorine), vitamin D, etc. exhibit strong potential against SmA. Some of these natural products have been reported to have equivalent potential to standard treatments to prevent body lean mass loss. Indeed, owing to the large complexity, diversity, and slow absorption rate of bioactive compounds made their usage quite challenging. Moreover, the use of natural products is controversial due to their partially known or elusive mechanism of action. Therefore, the present review summarizes various experimental and clinical evidence of some important bioactive compounds that shall help in the development of novel strategies to counteract SmA elicited by various causes.
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Affiliation(s)
- Aarti Yadav
- Clinical Biochemistry Laboratory, Department of Biochemistry, Maharshi Dayanand University, Rohtak, 124001, Haryana, India
| | - Surender Singh Yadav
- Department of Botany, Maharshi Dayanand University, Rohtak, 124001, Haryana, India
| | - Sandeep Singh
- Department of Biochemistry, Maharshi Dayanand University, Rohtak, 124001, Haryana, India
| | - Rajesh Dabur
- Clinical Biochemistry Laboratory, Department of Biochemistry, Maharshi Dayanand University, Rohtak, 124001, Haryana, India.
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Balthazart J. Membrane-initiated actions of sex steroids and reproductive behavior: A historical account. Mol Cell Endocrinol 2021; 538:111463. [PMID: 34582978 DOI: 10.1016/j.mce.2021.111463] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 09/21/2021] [Accepted: 09/22/2021] [Indexed: 01/25/2023]
Abstract
It was assumed for a long time that sex steroids are activating reproductive behaviors by the same mechanisms that produce their morphological and physiological effects in the periphery. However during the last few decades an increasing number of examples were identified where behavioral effects of steroids were just too fast to be mediated via changes in DNA transcription. This progressively forced behavioral neuroendocrinologists to recognize that part of the effects of steroids on behavior are mediated by membrane-initiated events. In this review we present a selection of these early data that changed the conceptual landscape and we provide a summary the different types of membrane-associated receptors (estrogens, androgens and progestagens receptors) that are playing the most important role in the control of reproductive behaviors. Then we finally describe in more detail three separate behavioral systems in which membrane-initiated events have clearly been established to contribute to behavior control.
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Cataldi M, Citro V, Resnati C, Manco F, Tarantino G. New Avenues for Treatment and Prevention of Drug-Induced Steatosis and Steatohepatitis: Much More Than Antioxidants. Adv Ther 2021; 38:2094-2113. [PMID: 33761100 PMCID: PMC8107075 DOI: 10.1007/s12325-021-01669-y] [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: 01/07/2021] [Accepted: 02/11/2021] [Indexed: 12/12/2022]
Abstract
Drug-induced lipid accumulation in the liver may induce two clinically relevant conditions, drug-induced steatosis (DIS) and drug-induced steatohepatitis (DISH). The list of drugs that may cause DIS or DISH is long and heterogeneous and includes therapeutically relevant molecules that cannot be easily replaced by less hepatotoxic medicines, therefore making specific strategies necessary for DIS/DISH prevention or treatment. For years, the only available tools to achieve these goals have been antioxidant drugs and free radical scavengers, which counteract drug-induced mitochondrial dysfunction but, unfortunately, have only limited efficacy. In the present review we illustrate how in vitro preclinical research unraveled new key players in the pathogenesis of specific forms of DISH, and how, in a few cases, proof of concept of the beneficial effects of their pharmacological modulation has been obtained in vivo in animal models of this condition. The key issue emerging from these studies is that, in selected cases, liver toxicity depends on mechanisms unrelated to those responsible for the desired, primary pharmacological effects of the toxic drug and, therefore, specific strategies can be designed to overcome steatogenicity without making the drug ineffective. In particular, the hepatotoxic drug could be given in combination with a second molecule intended to selectively antagonize its liver toxicity whilst, ideally, potentiating its desired pharmacological activity. Although most of the evidence that we discuss is from in vitro or animal models and will need to be further explored and validated in humans, it highlights new avenues to be pursued in order to improve the safety of steatogenic drugs.
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Sexual hormones and diabetes: The impact of estradiol in pancreatic β cell. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2021. [PMID: 33832654 DOI: 10.1016/bs.ircmb.2021.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/13/2023]
Abstract
Diabetes is one of the most prevalent metabolic diseases and its incidence is increasing throughout the world. Data from World Health Organization (WHO) point-out that diabetes is a major cause of blindness, kidney failure, heart attacks, stroke and lower limb amputation and estimated 1.6 million deaths were directly caused by it in 2016. Population studies show that the incidence of this disease increases in women after menopause, when the production of estrogen is decreasing in them. Knowing the impact that estrogenic signaling has on insulin-secreting β cells is key to prevention and design of new therapeutic targets. This chapter explores the role of estrogen and their receptors in the regulation of insulin secretion and biosynthesis, proliferation, regeneration and survival in pancreatic β cells. In addition, delves into the genetic animal models developed and its application for the specific study of the different estrogen signaling pathways. Finally, discusses the impact of menopause and hormone replacement therapy on pancreatic β cell function.
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Targeting Aquaporins in Novel Therapies for Male and Female Breast and Reproductive Cancers. Cells 2021; 10:cells10020215. [PMID: 33499000 PMCID: PMC7911300 DOI: 10.3390/cells10020215] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/13/2021] [Accepted: 01/20/2021] [Indexed: 12/24/2022] Open
Abstract
Aquaporins are membrane channels in the broad family of major intrinsic proteins (MIPs), with 13 classes showing tissue-specific distributions in humans. As key physiological modulators of water and solute homeostasis, mutations, and dysfunctions involving aquaporins have been associated with pathologies in all major organs. Increases in aquaporin expression are associated with greater severity of many cancers, particularly in augmenting motility and invasiveness for example in colon cancers and glioblastoma. However, potential roles of altered aquaporin (AQP) function in reproductive cancers have been understudied to date. Published work reviewed here shows distinct classes aquaporin have differential roles in mediating cancer metastasis, angiogenesis, and resistance to apoptosis. Known mechanisms of action of AQPs in other tissues are proving relevant to understanding reproductive cancers. Emerging patterns show AQPs 1, 3, and 5 in particular are highly expressed in breast, endometrial, and ovarian cancers, consistent with their gene regulation by estrogen response elements, and AQPs 3 and 9 in particular are linked with prostate cancer. Continuing work is defining avenues for pharmacological targeting of aquaporins as potential therapies to reduce female and male reproductive cancer cell growth and invasiveness.
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10
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Shepherd R, Cheung AS, Pang K, Saffery R, Novakovic B. Sexual Dimorphism in Innate Immunity: The Role of Sex Hormones and Epigenetics. Front Immunol 2021; 11:604000. [PMID: 33584674 PMCID: PMC7873844 DOI: 10.3389/fimmu.2020.604000] [Citation(s) in RCA: 112] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 12/04/2020] [Indexed: 12/17/2022] Open
Abstract
Sexual dimorphism refers to differences between biological sexes that extend beyond sexual characteristics. In humans, sexual dimorphism in the immune response has been well demonstrated, with females exhibiting lower infection rates than males for a variety of bacterial, viral, and parasitic pathogens. There is also a substantially increased incidence of autoimmune disease in females compared to males. Together, these trends indicate that females have a heightened immune reactogenicity to both self and non-self-molecular patterns. However, the molecular mechanisms driving the sexually dimorphic immune response are not fully understood. The female sex hormones estrogen and progesterone, as well as the male androgens, such as testosterone, elicit direct effects on the function and inflammatory capacity of immune cells. Several studies have identified a sex-specific transcriptome and methylome, independent of the well-described phenomenon of X-chromosome inactivation, suggesting that sexual dimorphism also occurs at the epigenetic level. Moreover, distinct alterations to the transcriptome and epigenetic landscape occur in synchrony with periods of hormonal change, such as puberty, pregnancy, menopause, and exogenous hormone therapy. These changes are also mirrored by changes in immune cell function. This review will outline the evidence for sex hormones and pregnancy-associated hormones as drivers of epigenetic change, and how this may contribute to the sexual dimorphism. Determining the effects of sex hormones on innate immune function is important for understanding sexually dimorphic autoimmune diseases, sex-specific responses to pathogens and vaccines, and how innate immunity is altered during periods of hormonal change (endogenous or exogenous).
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Affiliation(s)
- Rebecca Shepherd
- Epigenetics Group, Infection and Immunity Theme, Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
| | - Ada S. Cheung
- Department of Medicine (Austin Health), The University of Melbourne, Parkville, VIC, Australia
- Department of Endocrinology, Austin Health, Heidelberg, VIC, Australia
| | - Ken Pang
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
- Brain and Mitochondrial Research, Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC, Australia
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
- Department of Adolescent Medicine, Royal Children’s Hospital, Parkville, VIC, Australia
| | - Richard Saffery
- Epigenetics Group, Infection and Immunity Theme, Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
| | - Boris Novakovic
- Epigenetics Group, Infection and Immunity Theme, Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
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17β-Estradiol strongly inhibits azoxymethane/dextran sulfate sodium-induced colorectal cancer development in Nrf2 knockout male mice. Biochem Pharmacol 2020; 182:114279. [PMID: 33068552 DOI: 10.1016/j.bcp.2020.114279] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/18/2020] [Accepted: 10/07/2020] [Indexed: 12/11/2022]
Abstract
Nuclear factor erythroid 2-related factor 2 (Nrf2) has dual effects on inflammation and cancer progression depending on the microenvironment. Estrogens have a protective effect on colorectal cancer (CRC) development. The aim of this study was to investigate CRC development in Nrf2 knockout (KO) mice. Azoxymethane (AOM) and dextran sulfate sodium (DSS)-treated wild-type (WT) and Nrf2 KO male mice were sacrificed at weeks 2 and 16 after AOM injection with/without 17β-estradiol (E2) treatment during week 1. Disease activity index and colon tissue damage at week 2 showed strong attenuation following E2 administration in WT mice but to a lesser extent in Nrf2 KO male mice. At week 16, E2 significantly diminished AOM/DSS-induced adenoma/cancer incidence at distal colon in the Nrf2 KO group, but not in the WT. Furthermore, mRNA or protein levels of NF-κB-related mediators (i.e., iNOS, TNF-α, and IL-1β) and Nrf2-related antioxidants (i.e., NQO1 and HO-1) were significantly lower in the Nrf2 KO group regardless of E2 treatment compared to the WT. The expression of estrogen receptor beta (ERβ) was higher in the Nrf2 KO group than in the WT. In conclusion, estrogen further inhibits CRC by upregulating ERβ-related alternate pathways in the absence of Nrf2.
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12
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Lopresti NM, Esguerra M, Mermelstein PG. Sex Differences in Animal Models of Opioid Reward. CURRENT SEXUAL HEALTH REPORTS 2020; 12:186-194. [PMID: 33574737 PMCID: PMC7872138 DOI: 10.1007/s11930-020-00266-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PURPOSE OF REVIEW This review aims to discuss sex differences observed in preclinical rodent models of opioid reward. RECENT FINDINGS Utilizing a variety of methodological approaches and drug regimens, no clear consensus has emerged regarding the effects of opiates between males and females. This is quite dissimilar to work examining psychostimulants, where female animals reliably exhibit stronger behavioral responses. SUMMARY With opioid research quickly expanding to determine the neural underpinnings of opioid addiction, further research is essential to determine the conditions wherein sex differences may occur and how they may relate to the human condition.
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Affiliation(s)
| | - Manuel Esguerra
- University of Minnesota, Twin Cities, Department of Neuroscience
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Çubuk C, Can FE, Peña-Chilet M, Dopazo J. Mechanistic Models of Signaling Pathways Reveal the Drug Action Mechanisms behind Gender-Specific Gene Expression for Cancer Treatments. Cells 2020; 9:E1579. [PMID: 32610626 PMCID: PMC7408716 DOI: 10.3390/cells9071579] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 06/22/2020] [Accepted: 06/24/2020] [Indexed: 12/15/2022] Open
Abstract
Despite the existence of differences in gene expression across numerous genes between males and females having been known for a long time, these have been mostly ignored in many studies, including drug development and its therapeutic use. In fact, the consequences of such differences over the disease mechanisms or the drug action mechanisms are completely unknown. Here we applied mechanistic mathematical models of signaling activity to reveal the ultimate functional consequences that gender-specific gene expression activities have over cell functionality and fate. Moreover, we also used the mechanistic modeling framework to simulate the drug interventions and unravel how drug action mechanisms are affected by gender-specific differential gene expression. Interestingly, some cancers have many biological processes significantly affected by these gender-specific differences (e.g., bladder or head and neck carcinomas), while others (e.g., glioblastoma or rectum cancer) are almost insensitive to them. We found that many of these gender-specific differences affect cancer-specific pathways or in physiological signaling pathways, also involved in cancer origin and development. Finally, mechanistic models have the potential to be used for finding alternative therapeutic interventions on the pathways targeted by the drug, which lead to similar results compensating the downstream consequences of gender-specific differences in gene expression.
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Affiliation(s)
- Cankut Çubuk
- Clinical Bioinformatics Area, Fundación Progreso y Salud (FPS), CDCA, Hospital Virgen del Rocio, 41013 Sevilla, Spain; (C.Ç.); (F.E.C.); (M.P.-C.)
- Division of Genetics and Epidemiology, Institute of Cancer Research, London SW7 3RP, UK
- William Harvey Research Institute, Queen Mary University, London EC1M 6BQ, UK
| | - Fatma E. Can
- Clinical Bioinformatics Area, Fundación Progreso y Salud (FPS), CDCA, Hospital Virgen del Rocio, 41013 Sevilla, Spain; (C.Ç.); (F.E.C.); (M.P.-C.)
- Department of Biostatistics, Faculty of Medicine, Izmir Katip Celebi University, 35620 Balatçık, Turkey
| | - María Peña-Chilet
- Clinical Bioinformatics Area, Fundación Progreso y Salud (FPS), CDCA, Hospital Virgen del Rocio, 41013 Sevilla, Spain; (C.Ç.); (F.E.C.); (M.P.-C.)
- Bioinformatics in Rare Diseases (BiER), Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), FPS, Hospital Virgen del Rocio, 41013 Sevilla, Spain
- Computational Systems Medicine, Institute of Biomedicine of Seville (IBIS), 41013 Sevilla, Spain
| | - Joaquín Dopazo
- Clinical Bioinformatics Area, Fundación Progreso y Salud (FPS), CDCA, Hospital Virgen del Rocio, 41013 Sevilla, Spain; (C.Ç.); (F.E.C.); (M.P.-C.)
- Bioinformatics in Rare Diseases (BiER), Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), FPS, Hospital Virgen del Rocio, 41013 Sevilla, Spain
- Computational Systems Medicine, Institute of Biomedicine of Seville (IBIS), 41013 Sevilla, Spain
- FPS-ELIXIR-ES, Hospital Virgen del Rocío, 41013 Sevilla, Spain
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Olaniyan OT, Bamidele O, Adetunji CO, Priscilla B, Femi A, Ayobami D, Okotie G, Oluwaseun I, Olugbenga E, Mali PC. Quercetin modulates granulosa cell mRNA androgen receptor gene expression in dehydroepiandrosterone-induced polycystic ovary in Wistar rats via metabolic and hormonal pathways. J Basic Clin Physiol Pharmacol 2020; 31:/j/jbcpp.ahead-of-print/jbcpp-2019-0076/jbcpp-2019-0076.xml. [PMID: 32160160 DOI: 10.1515/jbcpp-2019-0076] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 11/18/2019] [Indexed: 06/10/2023]
Abstract
Background It is estimated that about 5-10% of women suffer from polycystic ovarian syndrome (PCOS) which is a major cause of female reproductive dysfunction. This study examined the role of quercetin on dehydroepiandrosterone (DHEA)-induced PCO in Wistar rats. Methods Twenty-eight pre-pubertal female Wistar rats that are 21 days old weighing 16-21 g were sorted into four groups (n = 7). Group I served as control and was given distilled water only, Group II were injected with 6 mg/100 g BW of DHEA in 0.2 mL of corn oil subcutaneously, Group III received 100 mg/kg BW of quercetin orally and Group IV received 6 mg/100 g BW of DHEA in 0.2 mL of corn oil subcutaneously and 100 mg/kg BW of quercetin orally. Rats were sacrificed after 15 days by cervical dislocation method. Blood samples and ovaries were collected for hormonal, biochemical, and histopathological analysis and expressions of mRNA androgen receptor gene were determined using RT-qPCR. All data were analysed using one-way ANOVA. Results A significant decrease (p < 0.05) in the antioxidant and metabolic enzyme activity in the DHEA treated group was observed when compared with control. DHEA co-administration with quercetin showed a significant decrease in malondialdehyde and cytokines when compared with DHEA treated group. Also a significant increase in progesterone, metabolic and antioxidant enzyme activity was observed. The histopathology demonstrates a reduction in cystic and atretic cells, improved expression of BCl2, E-Cadherin and a decrease in Bax. Conclusions Quercetin alleviated DHEA-induced PCO. These effects could be attributed to its antioxidant property.
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Affiliation(s)
- Olugbemi T Olaniyan
- Laboratory for Reproductive Biology and Developmental Programming, Department of Physiology, Edo University Iyamho, Edo State, Nigeria
| | - Okoli Bamidele
- Institute of Chemical and Biotechnology, Vaal University of Technology, Southern Gauteng Science and Technology Park, Sebokeng, South Africa
| | - Charles O Adetunji
- Applied Microbiology, Biotechnology and Nanotechnology Laboratory, Department of Microbiology, Edo University Iyamho, Edo State, Nigeria
| | - Bretet Priscilla
- Department of Physiology, Bingham University Karu, Nasarawa State, Nigeria
| | - Adebayo Femi
- Department of Physiology, Bingham University Karu, Nasarawa State, Nigeria
| | - Dare Ayobami
- Department of Physiology, Bingham University Karu, Nasarawa State, Nigeria
| | - Gloria Okotie
- Department of Physiology, University of Ibadan, Ibadan, Nigeria
| | | | - Eweoya Olugbenga
- Department of Anatomy, School of Medicine and Allied Health Sciences, University of the Gambia, Serrekunda, The Gambia
| | - Pratap C Mali
- Reproductive Biomedicine and Natural Product Lab, Department of Zoology, University of Rajasthan, Jaipur, India
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Olaniyan OT, Bamidele O, Uche S, Femi A, Ayobami D, Ayoola O, Builders M, Mali PC. Ovarian Metabolic activity in Dehydroepiandrosterone-Induced Polycystic Ovary in Wistar rats Treated with Aspirin. JBRA Assist Reprod 2020; 24:41-54. [PMID: 31608617 PMCID: PMC6993170 DOI: 10.5935/1518-0557.20190059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 08/18/2019] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVES Polycystic ovary syndrome (PCOS) represents 75% of the cases of anovulatory infertility. The aim of this study was to investigate the role of aspirin on dehydroepiandrosterone (DHEA) - induced polycystic ovary syndrome in Wistar rats. METHODS Twenty eight (28) pre-pubertal female Wistar rats of 21 days old weighing 16 - 21 g were divided into 4 groups (7 rats/group) and treated as follows; group I received distilled water and served as Control; Group II received 6 mg/100 g body weight DHEA in 0.2 ml of oil subcutaneously to induce PCOS. Group III received 7.5 mg/kg of aspirin orally; Group IV received 6 mg/100kg of body weight of DHEA in 0.2ml of oil subcutaneously and 7.5 mg/kg of aspirin orally. After 15 days of administration, the rats were slaughtered by cervical dislocation. Blood samples and ovaries were collected for reproductive hormonal analysis, biochemical and histopathological analysis. The expressions of mRNA androgen receptor (AR) gene in the ovary were determined by real time reverse transcriptase polymerase chain reaction (qPCR). All the data was analyzed using one way ANOVA with the Graph pad prism software version 6. A p<0.05 was considered significant. RESULTS The results obtained showed that dehydroepiandrosterone treatment caused significant decrease (p<0.05) in total protein, superoxide Dismutase (SOD), glutathione-s- transferase (GST), Ca2+ ATPase, and significant increase (p<0.05) in malondialdehyde, vascular endothelial growth factor, tumor necrosis factor and estrogen as compared to Controls. The group co-administered with DHEA and aspirin showed significant increases in SOD, GST, CAT, GSH, Progesterone, Ca2+ ATPase, Na+ ATPase, H+ ATPase and significant reduction (p<0.05) in malondialdehyde, VEGF, TNF-α and estrogen as compared with the DHEA group. The histopathological analysis showed reductions in cystic fibrosis, atretic ovaries, increased expression of Bcl-2 and E- Cadherin and reduced Bax expression in the group that received Aspirin and DHEA. CONCLUSION This study clearly demonstrates that Aspirin has ameliorating effects against polycystic ovary syndrome via anti-inflammatory and hormonal modulatory pathways.
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Affiliation(s)
- Olugbemi T Olaniyan
- Laboratory for Reproductive Biology and Developmental Programming, Department of Physiology, Edo University Iyamho, Edo State, Nigeria
| | - Okoli Bamidele
- Institute of Chemical and Biotechnology, Vaal University of Technology, Southern Gauteng Science and Technology Park, Sebokeng, South Africa
| | - Silas Uche
- Department of Physiology, Bingham University Karu, Nasarawa State, Nigeria
| | - Adebayo Femi
- Department of Physiology, Bingham University Karu, Nasarawa State, Nigeria
| | - Dare Ayobami
- Department of Physiology, Bingham University Karu, Nasarawa State, Nigeria
| | - Oluwafemi Ayoola
- Pan African School of Health Technology, Offa, Kwara State, Nigeria
| | - Modupe Builders
- Department of Pharmacology, Faculty of Pharmacy, Bingham University Karu, Nigeria
| | - Pratap Chand Mali
- Reproductive Biomedicine and Natural Product Lab, Department of Zoology, University of Rajasthan, Jaipur, India
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Guo M, Chen Y, Chen Q, Guo X, Yuan Z, Kang L, Jiang Y. Epigenetic changes associated with increased estrogen receptor alpha mRNA transcript abundance during reproductive maturation in chicken ovaries. Anim Reprod Sci 2020; 214:106287. [PMID: 32087914 DOI: 10.1016/j.anireprosci.2020.106287] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 11/14/2019] [Accepted: 01/16/2020] [Indexed: 10/25/2022]
Abstract
Estrogen receptor alpha (ERα) is a ligand-activated transcription factor that regulates cellular responses to estrogens and transcription processes of target genes. In this study, changes in DNA methylation and histone modifications in the promoter region and Exon 1 of the ERα gene were analyzed to ascertain epigenetic changes associated with increased ERα mRNA abundance during reproductive maturation from 90 (egg production not yet initiated) to 160 (after egg production was initiated) d of age (d post-hatching) in chicken ovaries. The results indicate there was no difference in CpG methylation at the promoter and Exon 1 except at the region analyzed with primer pairs F2 and R2, where percentage of methylated CpG of Sites 2 and 8 after reproductive maturation was greater compared with before reproductive maturation. By using the chromatin immunuoprecipitation (ChIP) assay combined with SYBR green quantitative PCR, effects of histone modifications were evaluated, including histone H3K4 di + tri methylation, H3K9 phosphorylation and trimethylation, H3K36 methylation and H3K27 acetylation on chicken ERα mRNA transcript abundance. The results indicated that there was a greater histone H3K27 acetylation and lesser H3K36 trimethylation associated with increased abundance of ERα mRNA transcript in chicken ovaries after reproductive maturation (90 compared with 160 d of age). In consistent with this finding, the relative abundance of transcriptional coactivator p300 mRNA transcript and protein in the ovaries was markedly greater in reproductively mature than immature chickens. Findings provide insights into the epigenetic regulations of the chicken ERα gene expression that is required for chicken ovarian development.
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Affiliation(s)
- Miao Guo
- Department of Biology Science and Technology, Shandong First Medical University, Tai'an, 271016, PR China
| | - Yuxia Chen
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, 271018, PR China
| | - Qiuyue Chen
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, 271018, PR China
| | - Xiaoli Guo
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, 271018, PR China
| | - Zhenjie Yuan
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, 271018, PR China
| | - Li Kang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, 271018, PR China.
| | - Yunliang Jiang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, 271018, PR China.
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Olaniyan OT, Femi A, Iliya G, Ayobami D, Godam E, Olugbenga E, Bamidele O, Chand Mali P. Vitamin C suppresses ovarian pathophysiology in experimental polycystic ovarian syndrome. ACTA ACUST UNITED AC 2019; 26:331-341. [PMID: 31564389 DOI: 10.1016/j.pathophys.2019.08.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 08/03/2019] [Accepted: 08/30/2019] [Indexed: 02/04/2023]
Abstract
BACKGROUND Polycystic ovary syndrome (PCOS), also known as the Stein-Leventhal syndrome is one of the most common causes of anovulation, infertility and hyperandrogenism in women, affecting between 5-10 % of women of reproductive age (12-35 years) worldwide. Despite substantial effort to define the cause of PCOS, its pathophysiology remains poorly understood. Consequently, determining the mechanisms of PCOS and the possible treatment is the major goal of medical research in endocrine and reproductive physiology. AIM To investigate the mechanism of ovarian metabolic changes in dehydroepiandrosterone (DHEA)-induced polycystic ovary in Wistar rats treated with vitamin C. METHODS Twenty-eight immature female Wistar rats weighing (16-21 g) were randomly divided into four groups (n = 7/group): group I served as control and was given water, group II were injected with DHEA (6 mg/100 g in 0.2 ml corn oil subcutaneously to induce PCOS condition), group III received 150 mg/kg BW of Vitamin C orally, group IV were co-administered with 6 mg/kg BW DHEA in 0.2 ml of corn oil subcutaneously and 150 mg/kg BW of Vitamin C orally. All treatments lasted for 15 days. Twenty-four hours after the last administration, the rats were sacrificed by cervical dislocation. Blood samples and ovaries were collected for reproductive hormonal analysis, biochemical and histopathological analysis. The expressions of mRNA androgen receptor gene in the ovary were determined by real-time reverse transcriptase polymerase chain reaction. All data were analysed using one-way ANOVA. RESULTS There was a significant decrease (p < 0.05) in the antioxidant and metabolic enzyme activity in the DHEA treated group compared with the control group. DHEA co-administration with Vitamin C showed a significant decrease in Malondialdehyde, cytokines and Estrogen and a significant increase (p < 0.05) in antioxidant and metabolic enzymes compared with DHEA treated group only. The histopathological evaluation demonstrates a reduction in cystic and atretic ovaries, increased expression of Bcl2 and E-Cadherin with a reduction in Bax expression in the group co-administered with DHEA and Vitamin C. The DHEA group showed overexpression of mRNA Androgen Receptor gene in the ovaries compared to the control group. CONCLUSION This study shows that Vitamin C plays a protective role against DHEA-Induced Polycystic Ovary in Wistar rats via its antioxidant and anti-apoptotic mechanisms.
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Affiliation(s)
- Olugbemi T Olaniyan
- Laboratory for Reproductive Biology and Developmental Programming, Department of Physiology, Edo University Iyamho, Edo State, Nigeria.
| | - Adebayo Femi
- Department of Physiology, Bingham University Karu, Nasarawa State, Nigeria
| | - Gambo Iliya
- Department of Physiology, Bingham University Karu, Nasarawa State, Nigeria
| | - Dare Ayobami
- Department of Physiology, Bingham University Karu, Nasarawa State, Nigeria
| | - Elvis Godam
- Department of Human Anatomy, Rivers State University, Port Harcourt, Nigeria
| | - Eweoya Olugbenga
- School of Medicine and Allied Health Sciences, University of the Gambia, Gambia
| | - Okoli Bamidele
- Institute of Chemical and Biotechnology, Vaal University of Technology, Southern Gauteng Science and Technology Park, Sebokeng, South Africa
| | - Pratap Chand Mali
- Reproductive Biomedicine and Natural Product Lab, Department of Zoology, University of Rajasthan, Jaipur, 302004, India
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Tolba MF, Omar HA, Hersi F, Nunes ACF, Noreddin AM. The impact of Catechol-O-methyl transferase knockdown on the cell proliferation of hormone-responsive cancers. Mol Cell Endocrinol 2019; 488:79-88. [PMID: 30904591 DOI: 10.1016/j.mce.2019.03.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 02/24/2019] [Accepted: 03/17/2019] [Indexed: 02/07/2023]
Abstract
Estrogen (E2) plays a central role in the development and progression of hormone-responsive cancers. Estrogen metabolites exhibit either stimulatory or inhibitory roles on breast and prostate cells. The catechol metabolite 4-hydroxyestradiol (4-OHE2) enhances cell proliferation, while 2-methoxyestradiol (2 ME) possesses anticancer activity. The major metabolizing enzyme responsible for detoxifying the deleterious metabolite 4-OHE2 and forming the anticancer metabolite 2 ME is Catechol-O-Methyl Transferase (COMT). The current work investigated the relationship between the expression level of COMT and the cell proliferation of hormone-responsive cancers. The results showed that COMT silencing enhanced the cell proliferation of ER-α positive cancer cells MCF-7 and PC-3 but not the cells that lack ER-α expression as MDA-MB231 and DU-145. The data generated from our study provides a better understanding of the effect of COMT on critical signaling pathways involved in the development and progression of breast cancer (BC) and prostate cancer (PC) including ER-α, p21cip1, p27kip1, NF-κB (P65) and CYP19A1. These findings suggest that COMT enzyme plays a tumor suppressor role in hormone receptor-positive tumors which opens the door for future studies to validate COMT expression as a novel biomarker for the prediction of cancer aggressiveness and treatment efficacy.
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Affiliation(s)
- Mai F Tolba
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt; Chapman University School of Pharmacy, Irvine, CA 92618, USA; School of Medicine, University of California, Irvine, CA, USA.
| | - Hany A Omar
- College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62511 Egypt; Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates.
| | - Fatima Hersi
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Ane C F Nunes
- Division of Nephrology and Hypertension, School of Medicine, University of California, Irvine, CA 92697, USA
| | - Ayman M Noreddin
- Chapman University School of Pharmacy, Irvine, CA 92618, USA; School of Medicine, University of California, Irvine, CA, USA; College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates
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19
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Bourdon M, Santulli P, Kefelian F, Vienet-Legue L, Maignien C, Pocate-Cheriet K, de Mouzon J, Marcellin L, Chapron C. Prolonged estrogen (E2) treatment prior to frozen-blastocyst transfer decreases the live birth rate. Hum Reprod 2019. [PMID: 29529202 DOI: 10.1093/humrep/dey041] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
STUDY QUESTION How does the duration of estrogen (E2) treatment prior to frozen-blastocyst transfers affect the live birth rate (LBR)? SUMMARY ANSWER Prolonged E2 exposure as part of artificial endometrial preparation (AEP) significantly decreases the LBR after autologous frozen-thawed blastocyst transfer. WHAT IS KNOWN ALREADY One effective method for endometrial preparation prior to frozen embryo transfer is AEP, a sequential regimen with E2 and progesterone, which aims to mimic the endocrine exposure of the endometrium in a normal cycle. Nevertheless, the optimal duration of E2 administration prior to transfer remains unknown. STUDY DESIGN, SIZE, DURATION An observational cohort study was conducted in a tertiary care university hospital between 01/07/2012 and 31/12/2015. The main inclusion criteria was having a single frozen-thawed blastocyst transfer with an AEP using exogenous E2. PARTICIPANTS/MATERIALS, SETTING, METHODS A total of 1377 frozen-thawed blastocyst transfers were assigned to four groups according to the duration of the E2 administration prior to the embryo transfers. These comprised a '≤21 days' group (n = 330), a '22-28 days' group (n = 665), a '29-35 days' group (n = 289) and a '36-48 days' group (n = 93). The '≤21 days' group' was taken as the reference group. The main measured outcome was the LBR following frozen-thawed blastocyst transfers. Statistical analysis was conducted using univariate and multivariate logistic regression models. MAIN RESULTS AND THE ROLE OF CHANCE LBR significantly decreased when the E2 exposure prior to the frozen-thawed blastocyst transfer exceeded 28 days: OR = 0.66; 95% CI [0.46-0.95]; P = 0.026 and OR = 0.49 [0.27-0.89]; P = 0.018, respectively, for the '29 to 35 days' group and for the '36 to 48 days' group compared to the reference group. Early pregnancy loss rates significantly increased when the E2 exposure lasted more than 35 days prior to the frozen-thawed blastocyst transfer (OR = 2.37 [1.12-5.05]; P = 0.025 vs. the reference group). After multivariate logistic regression, E2 exposure lasting more than 28 days prior to the frozen-thawed blastocyst transfer was associated with a decrease in the LBR, for the '29-35 days' group (OR = 0.65; [0.45-0.95]; P = 0.044) as for the '36-48 days' group (OR = 0.49; [0.26-0.92]; P = 0.035), vs. the reference group. LIMITATIONS, REASONS FOR CAUTION One limitation is linked to the observational design of this study. WIDER IMPLICATIONS OF THE FINDINGS In order to give patients the best chance to obtain a live birth after frozen-thawed blastocyst transfer, the length of E2 exposure prior to the frozen-blastocyst transfer should not exceed 28 days. This study provides new insight in regard to endometrial preparation using AEP prior to frozen-blastocyst transfer. STUDY FUNDING/COMPETING INTEREST(S) No funding and no competing interest.
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Affiliation(s)
- Mathilde Bourdon
- Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Universitaire Paris Centre, Centre Hospitalier Universitaire (CHU) Cochin, Department of Gynaecology Obstetrics II and Reproductive Medicine 53 avenue de l'Observatoire, 75014 Paris, France.,Institut Cochin, INSERM U1016, Département 'Stress oxydant, prolifération cellulaire et inflammation', Université Paris Descartes, Sorbonne Paris Cité, 22 rue Mechain, 75014 Paris, France
| | - Pietro Santulli
- Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Universitaire Paris Centre, Centre Hospitalier Universitaire (CHU) Cochin, Department of Gynaecology Obstetrics II and Reproductive Medicine 53 avenue de l'Observatoire, 75014 Paris, France.,Institut Cochin, INSERM U1016, Département 'Stress oxydant, prolifération cellulaire et inflammation', Université Paris Descartes, Sorbonne Paris Cité, 22 rue Mechain, 75014 Paris, France
| | - Fleur Kefelian
- Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Universitaire Paris Centre, Centre Hospitalier Universitaire (CHU) Cochin, Department of Gynaecology Obstetrics II and Reproductive Medicine 53 avenue de l'Observatoire, 75014 Paris, France
| | - Laurine Vienet-Legue
- Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Universitaire Paris Centre, Centre Hospitalier Universitaire (CHU) Cochin, Department of Gynaecology Obstetrics II and Reproductive Medicine 53 avenue de l'Observatoire, 75014 Paris, France
| | - Chloé Maignien
- Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Universitaire Paris Centre, Centre Hospitalier Universitaire (CHU) Cochin, Department of Gynaecology Obstetrics II and Reproductive Medicine 53 avenue de l'Observatoire, 75014 Paris, France
| | - Khaled Pocate-Cheriet
- Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Universitaire Paris Centre, Centre Hospitalier Universitaire (CHU) Cochin, Service d'Histologie-Embryologie-Biologie de la Reproduction, 53 avenue de l'Observatoire, 75014 Paris, France
| | - Jacques de Mouzon
- Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Universitaire Paris Centre, Centre Hospitalier Universitaire (CHU) Cochin, Department of Gynaecology Obstetrics II and Reproductive Medicine 53 avenue de l'Observatoire, 75014 Paris, France.,Epidemiology, Paris, France
| | - Louis Marcellin
- Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Universitaire Paris Centre, Centre Hospitalier Universitaire (CHU) Cochin, Department of Gynaecology Obstetrics II and Reproductive Medicine 53 avenue de l'Observatoire, 75014 Paris, France.,Institut Cochin, INSERM U1016, Département 'Stress oxydant, prolifération cellulaire et inflammation', Université Paris Descartes, Sorbonne Paris Cité, 22 rue Mechain, 75014 Paris, France.,Institut Cochin, INSERM U1016, Département de 'Génétique, Développement et Cancer', Université Paris Descartes, Sorbonne Paris Cité, 22 rue Mechain, 75014 Paris, France
| | - Charles Chapron
- Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Universitaire Paris Centre, Centre Hospitalier Universitaire (CHU) Cochin, Department of Gynaecology Obstetrics II and Reproductive Medicine 53 avenue de l'Observatoire, 75014 Paris, France.,Institut Cochin, INSERM U1016, Département de 'Génétique, Développement et Cancer', Université Paris Descartes, Sorbonne Paris Cité, 22 rue Mechain, 75014 Paris, France
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Rani A, Stebbing J, Giamas G, Murphy J. Endocrine Resistance in Hormone Receptor Positive Breast Cancer-From Mechanism to Therapy. Front Endocrinol (Lausanne) 2019; 10:245. [PMID: 31178825 PMCID: PMC6543000 DOI: 10.3389/fendo.2019.00245] [Citation(s) in RCA: 140] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 03/28/2019] [Indexed: 12/24/2022] Open
Abstract
The importance and role of the estrogen receptor (ER) pathway has been well-documented in both breast cancer (BC) development and progression. The treatment of choice in women with metastatic breast cancer (MBC) is classically divided into a variety of endocrine therapies, 3 of the most common being: selective estrogen receptor modulators (SERM), aromatase inhibitors (AI) and selective estrogen receptor down-regulators (SERD). In a proportion of patients, resistance develops to endocrine therapy due to a sophisticated and at times redundant interference, at the molecular level between the ER and growth factor. The progression to endocrine resistance is considered to be a gradual, step-wise process. Several mechanisms have been proposed but thus far none of them can be defined as the complete explanation behind the phenomenon of endocrine resistance. Although multiple cellular, molecular and immune mechanisms have been and are being extensively studied, their individual roles are often poorly understood. In this review, we summarize current progress in our understanding of ER biology and the molecular mechanisms that predispose and determine endocrine resistance in breast cancer patients.
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Affiliation(s)
- Aradhana Rani
- School of Life Sciences, University of Westminster, London, United Kingdom
- *Correspondence: Aradhana Rani
| | - Justin Stebbing
- Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Georgios Giamas
- Department of Biochemistry and Biomedicine, School of Life Sciences, University of Sussex, Brighton, United Kingdom
| | - John Murphy
- School of Life Sciences, University of Westminster, London, United Kingdom
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Sialic Acid-Binding Lectin from Bullfrog Eggs Exhibits an Anti-Tumor Effect Against Breast Cancer Cells Including Triple-Negative Phenotype Cells. Molecules 2018; 23:molecules23102714. [PMID: 30347895 PMCID: PMC6222625 DOI: 10.3390/molecules23102714] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/19/2018] [Accepted: 10/19/2018] [Indexed: 01/22/2023] Open
Abstract
Sialic acid-binding lectin from Rana catesbeiana eggs (cSBL) is a multifunctional protein that has lectin and ribonuclease activity. In this study, the anti-tumor activities of cSBL were assessed using a panel of breast cancer cell lines. cSBL suppressed the cell growth of all cancer cell lines tested here at a concentration that is less toxic, or not toxic at all, to normal cells. The growth suppressive effect was attributed to the cancer-selective induction of apoptosis. We assessed the expressions of several key molecules associated with the breast cancer phenotype after cSBL treatment by western blotting. cSBL decreased the expression level of estrogen receptor (ER) α, while it increased the phosphorylation level of p38 mitogen-activated protein kinase (MAPK). cSBL also suppressed the expression of the progesterone receptor (PgR) and human epidermal growth factor receptor type 2 (HER2). Furthermore, it was revealed that cSBL decreases the expression of the epidermal growth factor receptor (EGFR/HER1) in triple-negative breast cancer cells. These results indicate that cSBL induces apoptosis with decreasing ErbB family proteins and may have great potential for breast cancer chemotherapy, particularly in triple-negative phenotype cells.
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Wang J, Zhang L, Liu B, Wang Q, Chen Y, Wang Z, Zhou J, Xiao W, Zheng C, Wang Y. Systematic investigation of the Erigeron breviscapus mechanism for treating cerebrovascular disease. JOURNAL OF ETHNOPHARMACOLOGY 2018; 224:429-440. [PMID: 29783016 DOI: 10.1016/j.jep.2018.05.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 05/14/2018] [Accepted: 05/17/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cerebrovascular diseases (CBVDs), characterized by striking morbidity and mortality, have become the most common life-threatening diseases. The existing drugs of CBVDs target one or a few of pathogenic factors, the efficacy of which is limited because of the complexity of CBVDs. Traditional Chinese medicine (TCM), featured by multi-component and multi-target endows the great effectiveness in CBVDs treatment. For instance, Erigeron breviscapus (vant.) Hand. Mazz. (Erigeron breviscapus) has been used to treat CBVDs for a long time and the efficacy has been verified through years' of practice. Nevertheless, the mechanisms of Erigeron breviscapus for treating CBVDs are still unclear. THE AIM OF THE STUDY Systematically decipher the mechanisms of Erigeron breviscapus for treating CBVDs. MATERIALS AND METHODS The systems pharmacology approach is utilized by integrating ADME pharmacokinetic screening, target fishing, protein-protein interaction (PPI), network analysis and in vitro experiments verification. RESULTS First, 14 potentially active molecules were screened out through in silico ADME pharmacokinetic evaluation, most of which have been reported with excellent biological activities. Then 169 targets of active molecules were read out using our in-house softwares, systems drug targeting (sysDT) and Weighted Ensemble Similarity(WES). We found that the targets of the active compounds were significantly enriched to the CBVDs therapeutic targets by analyzing their biological processes and protein-protein interactions (PPIs). A multi-layer network analysis including compound-target network, target-pathway network and "CBVDs pathway" indicated that the Erigeron breviscapus exerts a protective effect on CBVDs via regulating multiple pathways and hitting on multiple targets. Meanwhile in vitro experiments confirmed that the stigmasterol, scutellarein, and daucosterol from Erigeron breviscapus increased the MEK and PLCγ proteins levels, and decreased the expression of Bax, PI3K, and eNOS, which led to the cell survival, proliferation and contraction. CONCLUSION The approach used in this work offers a new exemplification for systematically understanding the mechanisms of herbal medicines, which will give an impulse to the CBVDs drug development.
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Affiliation(s)
- Jiangmei Wang
- Center of Bioinformatics, College of Life Science, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Lulu Zhang
- Center of Bioinformatics, College of Life Science, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Baoshi Liu
- Center of Bioinformatics, College of Life Science, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Qian Wang
- Center of Bioinformatics, College of Life Science, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Yangyang Chen
- Center of Bioinformatics, College of Life Science, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Zhenzhong Wang
- State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Pharmaceutical Co. Ltd., Lianyungang, China
| | - Jun Zhou
- State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Pharmaceutical Co. Ltd., Lianyungang, China
| | - Wei Xiao
- State Key Laboratory of New-tech for Chinese Medicine Pharmaceutical Process, Jiangsu Kanion Pharmaceutical Co. Ltd., Lianyungang, China
| | - Chunli Zheng
- College of Life Science, Northwest University, Xi'an, Shaanxi 710069, China
| | - Yonghua Wang
- Center of Bioinformatics, College of Life Science, Northwest A & F University, Yangling, Shaanxi 712100, China.
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You H, Meng K, Wang ZY. The ER-α36/EGFR signaling loop promotes growth of hepatocellular carcinoma cells. Steroids 2018; 134:78-87. [PMID: 29481815 DOI: 10.1016/j.steroids.2018.02.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 01/04/2018] [Accepted: 02/20/2018] [Indexed: 02/06/2023]
Abstract
Hepatocellular carcinoma (HCC) is the common primary liver cancer and the third leading cause of cancer related mortality worldwide. It is generally thought that the estrogen-signaling pathway is not related to the development and progression of human HCC. However, accumulating evidences indicate the existence of a rapid estrogen signaling in HCC cells that is able to promote cell growth. However, the receptor that mediates the rapid estrogen signaling in HCC cells has not been established. Previously, our laboratory identified a variant of ER-α, ER-α36, and found that ER-α36 mediates the rapid estrogen signaling such as the activation of the MAPK/ERK signaling in breast carcinoma cells. Our current experiments studied the role of the rapid estrogen signaling mediated by ER-α36 in growth of HCC HepG2 and PLC/PRF/5 cells that highly express ER-α36 and found these cells were strongly responsive to the rapid estrogen signaling. Knockdown of ER-α36 expression in these HCC cells using the shRNA method attenuated their responsiveness to estrogen and destabilized EGFR protein. ER-α36 mediated estrogen-induced phosphorylation of Src and the MAPK/ERK as well as cyclin D1 expression. In addition, there existed an ER-α36/EGFR positive regulatory loop in HCC cells that was important for the maintenance and positive regulation of HCC tumorsphere cells. Our results thus indicated that the rapid estrogen receptor is mediated by ER-α36 in HCC cells through the EGFR/Src/ERK signaling pathway and suggested that the ER-α36/EGFR signaling loop is a potential target to develop novel therapeutic approaches for HCC treatment.
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Affiliation(s)
- Hui You
- Beijing Shenogen Biomedical Co., Ltd, Beijing, PR China
| | - Kun Meng
- Beijing Shenogen Biomedical Co., Ltd, Beijing, PR China
| | - Zhao-Yi Wang
- Beijing Shenogen Biomedical Co., Ltd, Beijing, PR China.
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24
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Al-Khyatt W, Tufarelli C, Khan R, Iftikhar SY. Selective oestrogen receptor antagonists inhibit oesophageal cancer cell proliferation in vitro. BMC Cancer 2018; 18:121. [PMID: 29390981 PMCID: PMC5796348 DOI: 10.1186/s12885-018-4030-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 01/23/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Oestrogen receptors (ER) have a well-established role to the initiation, progression and regulation of responses to treatment of breast, prostate, and lung cancers. Previous data indicates altered ER expression in oesophageal cancers (OC). However the role of ER subtypes and ER specific inhibitors in the regulation of OC progression remains unclear. This study sought to assess levels of ERα and ERβ in OC. The effects of highly selective ER antagonists on cell proliferation and apoptosis in two OC adenocarcinoma cell lines was also studied. METHODS ERα and ERβ expression profiling in paired normal oesophageal mucosa and tumour tissues (n = 34; adenocarcinoma n = 28; squamous cell carcinoma n = 6) was performed using quantitative reverse transcription polymerase chain reaction (qRT-PCR). Correlation between levels of ER with the clinico-pathological features for OC was determined. The effect of selective ER antagonists on proliferation of OE33 and OE19 OC cell lines was studied. RESULTS ERα and ERβ mRNA expression was significantly higher (p < 0.05) in tumour tissues relative to their paired normal mucosa and correlated inversely with survival outcome (p < 0.05). Upregulation of ERα mRNA correlated with higher pathological T-stage (p < 0.05) and lymph node metastasis (p < 0.05) while ERβ mRNA upregulation correlated with positive vascular invasion (p < 0.05). A significant concentration-dependent inhibition of proliferation in OE33 and OE19 cell lines was induced by a highly-selective ERα antagonist (MPP) and an ERβ specific antagonist (PHTPP) (p < 0.05). Moreover, anti-oestrogens induced cell death through stimulation of apoptotic caspase activity. CONCLUSION These findings indicate that the ER system is involved in OC progression and thus may provide a novel target for the treatment of OC.
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Affiliation(s)
- Waleed Al-Khyatt
- Department of Upper GI Surgery, Royal Derby Hospital, Derby Teaching Hospitals NHS Foundation Trust, Uttoxeter Road, Derby, DE22 3NE UK
- Division of Medical Sciences and Graduate Entry Medicine, Royal Derby Hospital, Uttoxeter Road, Derby, DE22 3DT UK
| | - Cristina Tufarelli
- Division of Medical Sciences and Graduate Entry Medicine, Royal Derby Hospital, Uttoxeter Road, Derby, DE22 3DT UK
| | - Raheela Khan
- Division of Medical Sciences and Graduate Entry Medicine, Royal Derby Hospital, Uttoxeter Road, Derby, DE22 3DT UK
| | - Syed Yousef Iftikhar
- Department of Upper GI Surgery, Royal Derby Hospital, Derby Teaching Hospitals NHS Foundation Trust, Uttoxeter Road, Derby, DE22 3NE UK
- Division of Medical Sciences and Graduate Entry Medicine, Royal Derby Hospital, Uttoxeter Road, Derby, DE22 3DT UK
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25
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The effect of estradiol, testosterone, and human chorionic gonadotropin on the proliferation of Schwann cells with NF1
+/− or NF1
−/− genotype derived from human cutaneous neurofibromas. Mol Cell Biochem 2017; 444:27-33. [DOI: 10.1007/s11010-017-3227-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 11/24/2017] [Indexed: 10/18/2022]
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26
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Biallelic and monoallelic ESR2 variants associated with 46,XY disorders of sex development. Genet Med 2017; 20:717-727. [PMID: 29261182 DOI: 10.1038/gim.2017.163] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 08/04/2017] [Indexed: 11/08/2022] Open
Abstract
PURPOSE Disorders or differences of sex development (DSDs) are rare congenital conditions characterized by atypical sex development. Despite advances in genomic technologies, the molecular cause remains unknown in 50% of cases. METHODS Homozygosity mapping and whole-exome sequencing revealed an ESR2 variant in an individual with syndromic 46,XY DSD. Additional cases with 46,XY DSD underwent whole-exome sequencing and targeted next-generation sequencing of ESR2. Functional characterization of the identified variants included luciferase assays and protein structure analysis. Gonadal ESR2 expression was assessed in human embryonic data sets and immunostaining of estrogen receptor-β (ER-β) was performed in an 8-week-old human male embryo. RESULTS We identified a homozygous ESR2 variant, c.541_543del p.(Asn181del), located in the highly conserved DNA-binding domain of ER-β, in an individual with syndromic 46,XY DSD. Two additional heterozygous missense variants, c.251G>T p.(Gly84Val) and c.1277T>G p.(Leu426Arg), located in the N-terminus and the ligand-binding domain of ER-β, were found in unrelated, nonsyndromic 46,XY DSD cases. Significantly increased transcriptional activation and an impact on protein conformation were shown for the p.(Asn181del) and p.(Leu426Arg) variants. Testicular ESR2 expression was previously documented and ER-β immunostaining was positive in the developing intestine and eyes. CONCLUSION Our study supports a role for ESR2 as a novel candidate gene for 46,XY DSD.
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27
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Mesnage R, Phedonos A, Biserni M, Arno M, Balu S, Corton JC, Ugarte R, Antoniou MN. Evaluation of estrogen receptor alpha activation by glyphosate-based herbicide constituents. Food Chem Toxicol 2017; 108:30-42. [PMID: 28711546 DOI: 10.1016/j.fct.2017.07.025] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 06/20/2017] [Accepted: 07/11/2017] [Indexed: 01/05/2023]
Abstract
The safety, including the endocrine disruptive capability, of glyphosate-based herbicides (GBHs) is a matter of intense debate. We evaluated the estrogenic potential of glyphosate, commercial GBHs and polyethoxylated tallowamine adjuvants present as co-formulants in GBHs. Glyphosate (≥10,000 μg/L or 59 μM) promoted proliferation of estrogen-dependent MCF-7 human breast cancer cells. Glyphosate also increased the expression of an estrogen response element-luciferase reporter gene (ERE-luc) in T47D-KBluc cells, which was blocked by the estrogen antagonist ICI 182,780. Commercial GBH formulations or their adjuvants alone did not exhibit estrogenic effects in either assay. Transcriptomics analysis of MCF-7 cells treated with glyphosate revealed changes in gene expression reflective of hormone-induced cell proliferation but did not overlap with an ERα gene expression biomarker. Calculation of glyphosate binding energy to ERα predicts a weak and unstable interaction (-4.10 kcal mol-1) compared to estradiol (-25.79 kcal mol-1), which suggests that activation of this receptor by glyphosate is via a ligand-independent mechanism. Induction of ERE-luc expression by the PKA signalling activator IBMX shows that ERE-luc is responsive to ligand-independent activation, suggesting a possible mechanism of glyphosate-mediated activation. Our study reveals that glyphosate, but not other components present in GBHs, can activate ERα in vitro, albeit at relatively high concentrations.
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Affiliation(s)
- Robin Mesnage
- Gene Expression and Therapy Group, King's College London, Faculty of Life Sciences & Medicine, Department of Medical and Molecular Genetics, 8th Floor, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, United Kingdom
| | - Alexia Phedonos
- Gene Expression and Therapy Group, King's College London, Faculty of Life Sciences & Medicine, Department of Medical and Molecular Genetics, 8th Floor, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, United Kingdom
| | - Martina Biserni
- Gene Expression and Therapy Group, King's College London, Faculty of Life Sciences & Medicine, Department of Medical and Molecular Genetics, 8th Floor, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, United Kingdom
| | - Matthew Arno
- Genomics Centre, King's College London, Waterloo Campus, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Sucharitha Balu
- Genomics Centre, King's College London, Waterloo Campus, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - J Christopher Corton
- Integrated Systems Toxicology Division, US Environmental Protection Agency, 109 T.W. Alexander Dr MD-B143-06, Research Triangle Park, NC 27711, United States
| | - Ricardo Ugarte
- Instituto de Ciencias Químicas, Facultad de Ciencias, Universidad Austral de Chile, Independencia 641, Valdivia, Chile
| | - Michael N Antoniou
- Gene Expression and Therapy Group, King's College London, Faculty of Life Sciences & Medicine, Department of Medical and Molecular Genetics, 8th Floor, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, United Kingdom.
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Mahabir S, Pfeiffer R, Xu X, Baer DJ, Taylor PR. Effects of low-to-moderate alcohol supplementation on urinary estrogen metabolites in postmenopausal women in a controlled feeding study. Cancer Med 2017; 6:2419-2423. [PMID: 28879665 PMCID: PMC5633545 DOI: 10.1002/cam4.1153] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 06/19/2017] [Accepted: 07/11/2017] [Indexed: 01/13/2023] Open
Abstract
Heavy alcohol drinking is associated with increased breast cancer risk, but associations with low‐to‐moderate alcohol consumption are less clear and the biological mechanisms are not well defined. The objective of this study was to evaluate the effects of 8 weeks of low (15 g/d) and moderate (30 g/d) alcohol ingestion on concentrations of 15 urinary estrogen metabolites (EMs) in postmenopausal women (n = 51) in a controlled feeding study with a randomized crossover design. Compared to no alcohol, 15 g/day for 8 weeks had no effect on urinary EMs. However, compared to no alcohol, 30 g/day for 8 weeks decreased urinary 2‐hydroestrone (2‐OHE1) by 3.3% (P = 0.055) and increased 16‐epiestriol (16‐EpiE3) by 26.6% (P = 0.037). Trends for reduced urinary 2‐OHE1 (P = 0.045), reduced ratio of 2‐OH:16OH pathways (P = 0.008), and increased 16‐EpiE3 (P = 0.035) were observed as alcohol ingestion increased from 0 g to 15 g to 30 g/d. Moderate alcohol consumption for 8 weeks had modest effects on urinary concentrations of 2‐OHE1 and 16‐EpiE3 among postmenopausal women in a carefully controlled feeding study.
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Affiliation(s)
- Somdat Mahabir
- Environmental Epidemiology Branch, Epidemiology and Genomics Research Program, Division of Cancer Control and Population Sciences, National Cancer Institute (NCI), Rockville, Maryland.,Genetic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, NCI, Rockville, Maryland
| | - Ruth Pfeiffer
- Biostatistics Branch, Division of Cancer Epidemiology and Genetics, NCI, Rockville, Maryland
| | - Xia Xu
- Cancer Research Technology Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - David J Baer
- Agricultural Research Service, United States Department of Agriculture, Beltsville, Maryland
| | - Philip R Taylor
- Genetic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, NCI, Rockville, Maryland
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29
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Estrogen Receptor β Mediated Neuroprotective Efficacy of Cicer microphyllum Seed Extract in Global Hypoxia. Neurochem Res 2017; 42:3474-3489. [DOI: 10.1007/s11064-017-2395-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 08/17/2017] [Accepted: 08/23/2017] [Indexed: 10/19/2022]
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30
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Boivin FJ, Schmidt-Ott KM. Transcriptional mechanisms coordinating tight junction assembly during epithelial differentiation. Ann N Y Acad Sci 2017. [PMID: 28636799 DOI: 10.1111/nyas.13367] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Epithelial tissues form a selective barrier via direct cell-cell interactions to separate and establish concentration gradients between the different compartments of the body. Proper function and formation of this barrier rely on the establishment of distinct intercellular junction complexes. These complexes include tight junctions, adherens junctions, desmosomes, and gap junctions. The tight junction is by far the most diverse junctional complex in the epithelial barrier. Its composition varies greatly across different epithelial tissues to confer various barrier properties. Thus, epithelial cells rely on tightly regulated transcriptional mechanisms to ensure proper formation of the epithelial barrier and to achieve tight junction diversity. Here, we review different transcriptional mechanisms utilized during embryogenesis and disease development to promote tight junction assembly and maintenance of intercellular barrier integrity. We focus particularly on the Grainyhead-like transcription factors and ligand-activated nuclear hormone receptors, two central families of proteins in epithelialization.
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Affiliation(s)
- Felix J Boivin
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Canada
| | - Kai M Schmidt-Ott
- Max Delbrück Center for Molecular Medicine, Berlin, Germany.,Department of Nephrology, Charité Medical University, Berlin, Germany
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31
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Nunes C, Silva C, Correia-Branco A, Martel F. Lack of effect of the procarcinogenic 17β-estradiol on nutrient uptake by the MCF-7 breast cancer cell line. Biomed Pharmacother 2017; 90:287-294. [PMID: 28365520 DOI: 10.1016/j.biopha.2017.03.069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 03/22/2017] [Accepted: 03/23/2017] [Indexed: 12/26/2022] Open
Abstract
Breast cancer is one of the most frequent cancers in the population, especially in older women. Estrogen is known to be a key hormone in the development and progression of mammary carcinogenesis. In this study, we investigated if the procarcinogenic effect of 17β-estradiol (E2) in breast cancer MCF-7 cells is dependent on changes in glucose or folic acid cellular uptake. The effect of E2 on uptake of 3H-deoxy-d-glucose, 3H-folic acid, cell proliferation (3-thymidine incorporation assay), culture growth (sulforhodamine B assay), viability (lactate dehydrogenase activity assay), lactate production and migration capacity (injury assay) was evaluated. E2 (48h; 100nM) increased culture growth (16%), proliferation rate (24%), cellular viability (36%) and lactate production (38%). In contrast, E2 did not significantly affect the migration capacity of MCF-7 cells. The pro-proliferative, but not the cytoprotective effect of E2 was found to be ERβ-dependent. The polyphenols rutin and caffeic acid were not able to counteract the effect of E2 upon cell proliferation and viability. Uptake of 3H-deoxy-d-glucose was not affected by E2, either in the absence or presence of GLUT inhibitors (cytochalasin B plus phloridzin). Moreover, E2 did not change GLUT1 mRNA levels. Finally, 3H-folic acid uptake was also not affected by E2, both in the absence and presence of the RFC1 inhibitor, methotrexate. The pro-proliferative and cytoprotective effects of E2 are not dependent neither of stimulation of glucose cellular uptake (both GLUT and non-GLUT-mediated) nor of stimulation of folic acid uptake (both RFC1-and non-RFC1-mediated).
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Affiliation(s)
- C Nunes
- Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal; Institute for Research and Innovation in Health Sciences (I3S), University of Porto, Porto, Portugal
| | - C Silva
- Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal; Institute for Research and Innovation in Health Sciences (I3S), University of Porto, Porto, Portugal
| | - A Correia-Branco
- Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal; Institute for Research and Innovation in Health Sciences (I3S), University of Porto, Porto, Portugal
| | - F Martel
- Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal; Institute for Research and Innovation in Health Sciences (I3S), University of Porto, Porto, Portugal.
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Abstract
Background: Features of malignant melanoma (MM) vary in the different geographic regions of the world. This may be attributable to environmental, ethnic, and genetic factors. The aim of this study was to determine the expression of estrogen receptor alpha (ER-α) in MM in Isfahan, Iran. Materials and Methods: This study was planned as a descriptive, analytical, cross-sectional investigation. During this study, paraffin-embedded tissue blocks of patients with a histopathologic diagnosis of MM was studied for ER-α using immunohistochemistry (IHC). Results: In this study, 38 patients (female/male; 20/18) with a definite diagnosis of malignant cutaneous melanoma and mean age of 52.4 ± 11.2 years were investigated. Using envision IHC staining, there were not any cases with ER-α expression. Conclusion: In confirmation to the most previous studies, expression of ER-α was negative in MM. It is recommended to investigate the expression of estrogen receptor beta and other markers in MM.
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Affiliation(s)
- Parvin Rajabi
- Department of Pathology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Marzieh Bagheri
- Department of Pathology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohsen Hani
- Department of Pathology, Isfahan University of Medical Sciences, Isfahan, Iran
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Lu Q, Schnitzler GR, Vallaster CS, Ueda K, Erdkamp S, Briggs CE, Iyer LK, Jaffe IZ, Karas RH. Unliganded estrogen receptor alpha regulates vascular cell function and gene expression. Mol Cell Endocrinol 2017; 442:12-23. [PMID: 27888004 DOI: 10.1016/j.mce.2016.11.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 11/03/2016] [Accepted: 11/21/2016] [Indexed: 01/15/2023]
Abstract
The unliganded form of the estrogen receptor is generally thought to be inactive. Our prior studies, however, suggested that unliganded estrogen receptor alpha (ERα) exacerbates adverse vascular injury responses in mice. Here, we show that the presence of unliganded ERα decreases vascular endothelial cell (EC) migration and proliferation, increases smooth muscle cell (SMC) proliferation, and increases inflammatory responses in cultured ECs and SMCs. Unliganded ERα also regulates many genes in vascular ECs and mouse aorta. Activation of ERα by E2 reverses the cell physiological effects of unliganded ERα, and promotes gene regulatory effects that are predicted to counter the effects of unliganded ERα. These results reveal that the unliganded form of ERα is not inert, but significantly impacts gene expression and physiology of vascular cells. Furthermore, they indicate that the cardiovascular protective effects of estrogen may be connected to its ability to counteract these effects of unliganded ERα.
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Affiliation(s)
- Qing Lu
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA 02111, USA
| | - Gavin R Schnitzler
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA 02111, USA.
| | - Caroline S Vallaster
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA 02111, USA
| | - Kazutaka Ueda
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA 02111, USA
| | - Stephanie Erdkamp
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA 02111, USA
| | - Christine E Briggs
- Tufts Center for Neuroscience Research, Neuroscience Department, Tufts University School of Medicine, Boston, MA 02111, USA
| | - Lakshmanan K Iyer
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA 02111, USA
| | - Iris Z Jaffe
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA 02111, USA
| | - Richard H Karas
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA 02111, USA.
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Alterations in estrogen signalling pathways upon acquisition of anthracycline resistance in breast tumor cells. PLoS One 2017; 12:e0172244. [PMID: 28196134 PMCID: PMC5308870 DOI: 10.1371/journal.pone.0172244] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 02/01/2017] [Indexed: 11/19/2022] Open
Abstract
Intrinsic or acquired drug resistance is a major impediment to the successful treatment of women with breast cancer using chemotherapy. We have observed that MCF-7 breast tumor cells selected for resistance to doxorubicin or epirubicin (MCF-7DOX2 and MCF-7EPI cells, respectively) exhibited increased expression of several members of the aldo-keto reductase (AKR) gene family (in particular AKR1C3 and AKR1B10) relative to control MCF-7CC cells selected by propagation in the absence of drug. Normal cellular roles for the AKRs include the promotion of estrogen (E2) synthesis from estrone (E1) and the hydroxylation and detoxification of exogenous xenobiotics such as anthracycline chemotherapy drugs. While hydroxylation of anthracyclines strongly attenuates their cytotoxicity, it is unclear whether the enhanced AKR expression in the above anthracycline-resistant cells promotes E2 synthesis and/or alterations in E2 signalling pathways and whether such changes contribute to enhanced survival and anthracycline resistance. To determine the role of AKRs and E2 pathways in doxorubicin resistance, we examined changes in the expression of E2-related genes and proteins upon acquisition of doxorubicin resistance. We also assessed the effects of AKR overexpression or downregulation or the effects of activators or inhibitors of E2-dependent pathways on previously acquired resistance to doxorubicin. In this study we observed that the enhanced AKR expression upon acquisition of anthracycline resistance was, in fact, associated with enhanced E2 production. However, the expression of estrogen receptor α (ERα) was reduced by 2- to 5-fold at the gene transcript level and 2- to 20-fold at the protein level upon acquisition of anthracycline resistance. This was accompanied by an even stronger reduction in ERα phosphorylation and activity, including highly suppressed expression of two proteins under E2-dependent control (Bcl-2 and cyclin D1). The diminished Bcl-2 and cyclin D1 expression would be expected to reduce the growth rate of the cells, a hypothesis which was confirmed in subsequent cell proliferation experiments. AKR1C3 or AKR1B10 overexpression alone had no effect on doxorubicin sensitivity in MCF-7CC cells, while siRNA-mediated knockdown of AKR1C3 and/or AKR1B10 expression had no significant effect on sensitivity to doxorubicin in MCF-7DOX2 or MCF-7EPI cells. This suggested that enhanced or reduced AKR expression/activity is insufficient to confer anthracycline resistance or sensitivity to breast tumor cells, respectively. Rather, it would appear that AKR overexpression acts in concert with other proteins to confer anthracycline resistance, including reduced E2-dependent expression of both an important apoptosis inhibitor (Bcl-2) and a key protein associated with activation of cell cycle-dependent kinases (cyclin D1).
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Vacas E, Muñoz-Moreno L, Valenzuela PL, Prieto JC, Schally AV, Carmena MJ, Bajo AM. Growth hormone-releasing hormone induced transactivation of epidermal growth factor receptor in human triple-negative breast cancer cells. Peptides 2016; 86:153-161. [PMID: 27816751 DOI: 10.1016/j.peptides.2016.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 10/20/2016] [Accepted: 11/01/2016] [Indexed: 01/01/2023]
Abstract
Triple-negative breast cancer (TNBC) is a subset of breast cancers which is negative for expression of estrogen and progesterone receptors and human epidermal growth factor receptor-2 (HER2). Chemotherapy is currently the only form of treatment for women with TNBC. Growth hormone-releasing hormone (GHRH) and epidermal growth factor (EGF) are autocrine/paracrine growth factors in breast cancer and a substantial proportion of TNBC expresses receptors for GHRH and EGF. The aim of this study was to evaluate the interrelationship between both these signaling pathways in MDA-MB-468 human TNBC cells. We evaluated by Western blot assays the effect of GHRH on transactivation of EGF receptor (EGFR) as well as the elements implicated. We assessed the effect of GHRH on migration capability of MDA-MB-468 cells as well as the involvement of EGFR in this process by means of wound-healing assays. Our findings demonstrate that in MDA-MB-468 cells the stimulatory activity of GHRH on tyrosine phosphorylation of EGFR is exerted by two different molecular mechanisms: i) through GHRH receptors, GHRH stimulates a ligand-independent activation of EGFR involving at least cAMP/PKA and Src family signaling pathways; ii) GHRH also stimulates a ligand-dependent activation of EGFR implicating an extracellular pathway with an important role for metalloproteinases. The cross-talk between EGFR and GHRHR may be impeded by combining drugs acting upon GHRH receptors and EGFR family members. This combination of GHRH receptors antagonists with inhibitors of EGFR signalling could enhance the efficacy of both types of agents as well as reduce their doses increasing therapeutic benefits in management of human breast cancer.
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Affiliation(s)
- Eva Vacas
- Department of Systems of Biology, University of Alcala, Alcala de Henares, Spain
| | - Laura Muñoz-Moreno
- Department of Systems of Biology, University of Alcala, Alcala de Henares, Spain
| | - Pedro L Valenzuela
- Obstetrics and Gynaecology Department, Principe de Asturias Hospital, Alcalá de Henares University, Alcalá de Henares, Madrid, Spain
| | - Juan C Prieto
- Department of Systems of Biology, University of Alcala, Alcala de Henares, Spain
| | - Andrew V Schally
- Veterans Administration Medical Center and Departments of Pathology and Medicine, Division of Oncology and Hematology, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine and South Florida Veterans Affairs Foundation for Research and Education, Miami, FL, USA
| | - María J Carmena
- Department of Systems of Biology, University of Alcala, Alcala de Henares, Spain
| | - Ana M Bajo
- Department of Systems of Biology, University of Alcala, Alcala de Henares, Spain.
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Inhibition of the MAPK pathway alone is insufficient to account for all of the cytotoxic effects of naringenin in MCF-7 breast cancer cells. BIOCHIMIE OPEN 2016; 3:64-71. [PMID: 29450133 PMCID: PMC5801822 DOI: 10.1016/j.biopen.2016.09.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 09/26/2016] [Indexed: 12/24/2022]
Abstract
Estrogen receptor (ER) antagonists such as tamoxifen (Tam) have been used successfully to treat ER+ breast cancers for more than 30 years. Unfortunately, long term use of Tam can result in resistance. Tam resistance is associated with the activation of growth factor signaling pathways that promote cell proliferation and survival. The mitogen-activated protein kinase (MAPK), is up-regulated in Tam resistant (Tam-R) cells. Previous studies have reported that the flavanone, naringenin (Nar) can inhibit cell proliferation and induce apoptosis in ER+ breast cancer cells. Furthermore, Nar has been shown to inhibit the MAPK signaling pathways in MCF-7 cells. In this report we investigated whether inhibition of MAPK alone is mediating the effects of Nar on cell proliferation and viability. These studies will determine the mechanism of action of Nar. Tam-R MCF-7 breast cancer cells were treated with Nar or U0126, a MAPK kinase inhibitor. Our studies show that while both U0126 and Nar impaired cell proliferation and viability the combination of U0126 and Nar resulted in greater inhibition of cell viability than either compound alone. It has been previously reported that Nar can bind the ER. Our lab has also shown that Nar localizes ERα to a peri-nuclear region of the cell. Confocal microscopy revealed that in U0126 treated cells ERα displayed an even distribution across the cytoplasm as seen in untreated Tam-R cells. These studies suggest that MAPK is not the only target of Nar. Both Nar and U0126 reduce protein levels of ERK1/2. Nar and U0126 impair viability by different mechanisms. Nar does not mediate ERα localization via inhibition of MAPK.
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Dobovišek L, Hojnik M, Ferk P. Overlapping molecular pathways between cannabinoid receptors type 1 and 2 and estrogens/androgens on the periphery and their involvement in the pathogenesis of common diseases (Review). Int J Mol Med 2016; 38:1642-1651. [PMID: 27779654 DOI: 10.3892/ijmm.2016.2779] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Accepted: 10/12/2016] [Indexed: 11/06/2022] Open
Abstract
The physiological and pathophysiological roles of sex hormones have been well documented and the modulation of their effects is applicable in many current treatments. On the other hand, the physiological role of endocannabinoids is not yet clearly understood and the endocannabinoid system is considered a relatively new therapeutic target. The physiological association between sex hormones and cannabinoids has been investigated in several studies; however, its involvement in the pathophysiology of common human diseases has been studied separately. Herein, we present the first systematic review of molecular pathways that are influenced by both the cannabinoids and sex hormones, including adenylate cyclase and protein kinase A, epidermal growth factor receptor, cyclic adenosine monophosphate response element-binding protein, vascular endothelial growth factor, proto-oncogene serine/threonine-protein kinase, mitogen-activated protein kinase, phosphatidylinositol-4,5-bisphosphate 3-kinase, C-Jun N-terminal kinase and extracellular-signal-regulated kinases 1/2. Most of these influence cell proliferative activity. Better insight into this association may prove to be beneficial for the development of novel pharmacological treatment strategies for many common diseases, including breast cancer, endometrial cancer, prostate cancer, osteoporosis and atherosclerosis. The associations between cannabinoids, estrogens and androgens under these conditions are also presented and the molecular interactions are highlighted.
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Affiliation(s)
- Luka Dobovišek
- Department of Pharmacology and Experimental Toxicology, Faculty of Medicine, University of Maribor, SI-2000 Maribor, Slovenia
| | - Marko Hojnik
- Department of Pharmacology and Experimental Toxicology, Faculty of Medicine, University of Maribor, SI-2000 Maribor, Slovenia
| | - Polonca Ferk
- Department of Pharmacology and Experimental Toxicology, Faculty of Medicine, University of Maribor, SI-2000 Maribor, Slovenia
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Baldelli E, Bellezza G, Haura EB, Crinó L, Cress WD, Deng J, Ludovini V, Sidoni A, Schabath MB, Puma F, Vannucci J, Siggillino A, Liotta LA, Petricoin EF, Pierobon M. Functional signaling pathway analysis of lung adenocarcinomas identifies novel therapeutic targets for KRAS mutant tumors. Oncotarget 2016; 6:32368-79. [PMID: 26468985 PMCID: PMC4741699 DOI: 10.18632/oncotarget.5941] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 08/30/2015] [Indexed: 12/14/2022] Open
Abstract
Little is known about the complex signaling architecture of KRAS and the interconnected RAS-driven protein-protein interactions, especially as it occurs in human clinical specimens. This study explored the activated and interconnected signaling network of KRAS mutant lung adenocarcinomas (AD) to identify novel therapeutic targets.Thirty-four KRAS mutant (MT) and twenty-four KRAS wild-type (WT) frozen biospecimens were obtained from surgically treated lung ADs. Samples were subjected to Laser Capture Microdissection and Reverse Phase Protein Microarray analysis to explore the expression/activation levels of 150 signaling proteins along with co-activation concordance mapping. An independent set of 90 non-small cell lung cancers (NSCLC) was used to validate selected findings by immunohistochemistry (IHC).Compared to KRAS WT tumors, the signaling architecture of KRAS MT ADs revealed significant interactions between KRAS downstream substrates, the AKT/mTOR pathway, and a number of Receptor Tyrosine Kinases (RTK). Approximately one-third of the KRAS MT tumors had ERK activation greater than the WT counterpart (p<0.01). Notably 18% of the KRAS MT tumors had elevated activation of the Estrogen Receptor alpha (ER-α) (p=0.02).This finding was verified in an independent population by IHC (p=0.03).KRAS MT lung ADs appear to have a more intricate RAS linked signaling network than WT tumors with linkage to many RTKs and to the AKT-mTOR pathway. Combination therapy targeting different nodes of this network may be necessary to treat this group of patients. In addition, for patients with KRAS MT tumors and activation of the ER-α, anti-estrogen therapy may have important clinical implications.
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Affiliation(s)
- Elisa Baldelli
- Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA.,Medical Oncology Division, S. Maria della Misericordia Hospital, Perugia, Italy
| | - Guido Bellezza
- Department of Experimental Medicine, Section of Anatomic Pathology and Histology, Medical School, University of Perugia, Perugia, Italy
| | - Eric B Haura
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Lucio Crinó
- Medical Oncology Division, S. Maria della Misericordia Hospital, Perugia, Italy
| | - W Douglas Cress
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Jianghong Deng
- Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA
| | - Vienna Ludovini
- Medical Oncology Division, S. Maria della Misericordia Hospital, Perugia, Italy
| | - Angelo Sidoni
- Department of Experimental Medicine, Section of Anatomic Pathology and Histology, Medical School, University of Perugia, Perugia, Italy
| | - Matthew B Schabath
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Francesco Puma
- Department of Thoracic Surgery, University of Perugia, Perugia, Italy
| | - Jacopo Vannucci
- Department of Thoracic Surgery, University of Perugia, Perugia, Italy
| | | | - Lance A Liotta
- Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA
| | - Emanuel F Petricoin
- Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA
| | - Mariaelena Pierobon
- Center for Applied Proteomics and Molecular Medicine, George Mason University, Manassas, VA, USA
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Yin L, Wang ZY. Roles of the ER-α36-EGFR/HER2 positive regulatory loops in tamoxifen resistance. Steroids 2016; 111:95-99. [PMID: 26884313 DOI: 10.1016/j.steroids.2016.01.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 01/28/2016] [Accepted: 01/28/2016] [Indexed: 11/16/2022]
Abstract
Tamoxifen provided a successful treatment for ER-positive breast cancer for the past four decades. However, most breast tumors are eventually resistant to tamoxifen therapy. Extensive researches were conducted to understand the molecular mechanisms involved in tamoxifen resistance, and have revealed that multiple signaling molecules and pathways such as EGFR and HER2 are involved in tamoxifen resistance. Currently, the mechanisms by which tamoxifen sensitive breast cancer cells acquire these signaling pathways and develop tamoxifen resistance have not been elucidated. The identification of ER-α36, a variant of ER-α, that is able to mediate agonist activity of tamoxifen provided great insights into the underlying mechanisms of tamoxifen resistance. In this review, we will discuss the biological function and the possible underlying mechanisms of ER-α36 in tamoxifen resistance and specifically illustrate a novel cross-talk mechanism; positive regulatory loops between the ER-α36 and EGFR/HER2 in tamoxifen resistance. The function and the underlying mechanisms of ER-α36 in tamoxifen resistance of the breast cancer stem/progenitor cells will also be discussed. Finally, we will postulate a novel approach to restore tamoxifen sensitivity in tamoxifen resistant breast cancer cells.
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Affiliation(s)
- Li Yin
- Department of Medical Microbiology and Immunology, Creighton University Medical School, 2500 California Plaza, Omaha, NE, USA
| | - Zhao-Yi Wang
- Department of Medical Microbiology and Immunology, Creighton University Medical School, 2500 California Plaza, Omaha, NE, USA.
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Mahaldashtian M, Naghdi M, Ghorbanian MT, Makoolati Z, Movahedin M, Mohamadi SM. In vitro effects of date palm (Phoenix dactylifera L.) pollen on colonization of neonate mouse spermatogonial stem cells. JOURNAL OF ETHNOPHARMACOLOGY 2016; 186:362-368. [PMID: 27084457 DOI: 10.1016/j.jep.2016.04.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 04/11/2016] [Accepted: 04/11/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Date palm (Phoenix dactylifera L.) pollen (DPP) is widely used as a folk remedy for male infertility treatment, and has well known medicinal effects. AIM OF THE STUDY This study aimed to determine the in vitro effects of DPP on the efficiency of neonate mouse spermatogonial stem cells (SSCs) proliferation. MATERIAL AND METHODS Sertoli and SSCs were isolated from 6 to 10-days-old mouse testes, and their identity was confirmed using immunocytochemistry against cytokeratin for sertoli cells and PLZF, Oct-4 and CDH-1 for SSCs. Isolated testicular cells were cultured in the absence or presence of 0.06, 0.25 and 0.62mg/ml concentrations of DPP aqueous extract for 2 weeks. The number and diameter of SSC colonies were assessed during third, 7th, 9th and 14th day of culture, and the expression of the Mvh, GFRα-1 and Oct-4 was evaluated using quantitative PCR at the end of the culture period. The significance of the data was analyzed using ANOVA and paired samples t-test and Tukey and Bonferroni test as post hoc tests at the level of p≤0.05. RESULTS Pattern assay of colony formation showed that SSCs numbers increased in the present of 0.62mg/ml concentration of DPP extract with higher slop relative to other groups (P <0.05). Colony diameters had no significant difference between groups in 3th, 7th, 9th and 14th days after culture. The Mvh and Oct-4 genes expression had no significant difference between groups, while GFRα1 expression was increased significantly in cells treated with 0.06mg/ml concentration relative to other groups (P<0.05). CONCLUSION It seems that co-culture of SSCs with sertoli sells in the presence of low doses of DPP can increase SSCs proliferation and keep their stemness state, while higher concentrations can differentiate the treated cells.
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Affiliation(s)
- Maryam Mahaldashtian
- Department of Molecular & Cellular Biology, Faculty of Biology, Damghan University, Semnan, Iran.
| | - Majid Naghdi
- Department of Anatomical Sciences, Faculty of Medicine, Fasa University of Medical Sciences, Fasa, Iran.
| | - Mohamad Taghi Ghorbanian
- Department of Molecular & Cellular Biology, Faculty of Biology, Damghan University, Semnan, Iran.
| | - Zohreh Makoolati
- Department of Anatomical Sciences, Faculty of Medicine, Fasa University of Medical Sciences, Fasa, Iran.
| | - Mansoureh Movahedin
- Department of Anatomical Sciences, Faculty of Medicine, Tarbiat Modares University, Tehran, Iran
| | - Seyedeh Momeneh Mohamadi
- Department of Anatomical Sciences, Faculty of Medicine, Tarbiat Modares University, Tehran, Iran
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Ahirwar R, Vellarikkal SK, Sett A, Sivasubbu S, Scaria V, Bora U, Borthakur BB, Kataki AC, Sharma JD, Nahar P. Aptamer-Assisted Detection of the Altered Expression of Estrogen Receptor Alpha in Human Breast Cancer. PLoS One 2016; 11:e0153001. [PMID: 27043307 PMCID: PMC4820125 DOI: 10.1371/journal.pone.0153001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 03/22/2016] [Indexed: 12/21/2022] Open
Abstract
An increase in the expression of estrogen receptors (ER) and the expanded population of ER-positive cells are two common phenotypes of breast cancer. Detection of the aberrantly expressed ERα in breast cancer is carried out using ERα-antibodies and radiolabelled ligands to make decisions about cancer treatment and targeted therapy. Capitalizing on the beneficial advantages of aptamer over the conventional antibody or radiolabelled ligand, we have identified a DNA aptamer that selectively binds and facilitates the detection of ERα in human breast cancer tissue sections. The aptamer is identified using the high throughput sequencing assisted SELEX screening. Biophysical characterization confirms the binding and formation of a thermodynamically stable complex between the identified DNA aptamer (ERaptD4) and ERα (Ka = 1.55±0.298×108 M-1; ΔH = 4.32×104±801.1 cal/mol; ΔS = -108 cal/mol/deg). Interestingly, the specificity measurements suggest that the ERaptD4 internalizes into ERα-positive breast cancer cells in a target-selective manner and localizes specifically in the nuclear region. To harness these characteristics of ERaptD4 for detection of ERα expression in breast cancer samples, we performed the aptamer-assisted histochemical analysis of ERα in tissue samples from breast cancer patients. The results were validated by performing the immunohistochemistry on same samples with an ERα-antibody. We found that the two methods agree strongly in assay output (kappa value = 0.930, p-value <0.05 for strong ERα positive and the ERα negative samples; kappa value = 0.823, p-value <0.05 for the weak/moderate ER+ve samples, n = 20). Further, the aptamer stain the ERα-positive cells in breast tissues without cross-reacting to ERα-deficient fibroblasts, adipocytes, or the inflammatory cells. Our results demonstrate a significant consistency in the aptamer-assisted detection of ERα in strong ERα positive, moderate ERα positive and ERα negative breast cancer tissues. We anticipate that the ERaptD4 aptamer targeting ERα may potentially be used for an efficient grading of ERα expression in cancer tissues.
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Affiliation(s)
- Rajesh Ahirwar
- Department of System and Chemical Biology, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
- Academy of Scientific and Innovative research, CSIR- Institute of Genomics and Integrative Biology, Delhi, India
| | - Shamsudheen Karuthedath Vellarikkal
- Department of System and Chemical Biology, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
- Academy of Scientific and Innovative research, CSIR- Institute of Genomics and Integrative Biology, Delhi, India
| | - Arghya Sett
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Guwahati, India
| | - Sridhar Sivasubbu
- Department of System and Chemical Biology, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
- Academy of Scientific and Innovative research, CSIR- Institute of Genomics and Integrative Biology, Delhi, India
| | - Vinod Scaria
- Department of System and Chemical Biology, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
- Academy of Scientific and Innovative research, CSIR- Institute of Genomics and Integrative Biology, Delhi, India
| | - Utpal Bora
- Department of Biosciences and Bioengineering, Indian Institute of Technology, Guwahati, India
| | | | | | | | - Pradip Nahar
- Department of System and Chemical Biology, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
- Academy of Scientific and Innovative research, CSIR- Institute of Genomics and Integrative Biology, Delhi, India
- * E-mail:
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Why (multi)targeting of cyclin-dependent kinases is a promising therapeutic option for hormone-positive breast cancer and beyond. Future Med Chem 2015; 8:55-72. [PMID: 26692095 DOI: 10.4155/fmc.15.155] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Estrogens, via induction of their specific receptors (e.g., ER-α), regulate cell proliferation, differentiation and morphogenesis in mammary epithelium. Cell-cycle progression is driven by activation of complexes consisting of cyclin-dependent kinases (CDKs) and cyclins, which also modulate the activity of ER-α. Loss of control over the cell-cycle results in accelerated cell division and malignant transformation. Thus, a reciprocal relation exists between estrogen signaling and cell proliferation. Based on these findings, a new concept was developed to reduce ER-α activity and bring the cell cycle in transformed cells to heel. Prevention of ER-α activation and control over the deregulated cell cycle was achieved by supplementation with pharmacological CDK inhibitors alone or in combination with selective antiestrogens.
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Wang ZY, Yin L. Estrogen receptor alpha-36 (ER-α36): A new player in human breast cancer. Mol Cell Endocrinol 2015; 418 Pt 3:193-206. [PMID: 25917453 DOI: 10.1016/j.mce.2015.04.017] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 04/20/2015] [Accepted: 04/20/2015] [Indexed: 01/16/2023]
Abstract
Prevailing wisdom is that estrogen receptor (ER)-α mediated genomic estrogen signaling is responsible for estrogen-stimulated cell proliferation and development of ER-positive breast cancer. However, accumulating evidence indicates that another estrogen signaling pathway, non-genomic or rapid estrogen signaling, also plays an important role in mitogenic estrogen signaling. Previously, our laboratory cloned a 36 kDa variant of ER-α, ER-α36, and found that ER-α36 is mainly expressed in the cytoplasm and at the plasma membrane. ER-α36 mediates rapid estrogen signaling and inhibits genomic estrogen signaling. In this review, we review and update the biological function of ER-α36 in ER-positive and -negative breast cancer, breast cancer stem/progenitor cells and tamoxifen resistance, potential interaction and cross-talk of ER-α36 with other ERs and growth factor receptors, and intracellular pathways of ER-α36-mediated rapid estrogen signaling. The potential function and underlying mechanism of ER-α in development of ER-positive breast cancer will also be discussed.
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Affiliation(s)
- Zhao-Yi Wang
- Department of Medical Microbiology & Immunology, Creighton University Medical School, 2500 California Plaza, Omaha, NE 68178, USA.
| | - Li Yin
- Department of Medical Microbiology & Immunology, Creighton University Medical School, 2500 California Plaza, Omaha, NE 68178, USA
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Prognostic impact of the c-MET polymorphism on the clinical outcome in locoregional gastric cancer patients. Pharmacogenet Genomics 2015; 24:588-96. [PMID: 25203738 DOI: 10.1097/fpc.0000000000000091] [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]
Abstract
OBJECTIVE Dysregulation of the c-MET signaling pathway results from various molecular mechanisms including mutation, amplification, and overexpression. Overexpression and amplification of c-MET have been correlated with poor clinical outcome in gastric cancer, whereas the associations between c-MET polymorphisms and prognosis have not been well defined. We examined the prognostic impact of functional polymorphisms of the MET gene on clinical outcome in gastric cancer. METHODS Candidate polymorphisms of the MET gene were analyzed by PCR-based direct sequencing for the associations with clinical outcome across three independent cohorts, including 161 Japanese, 101 US, and 63 Austrian patients, with locoregional gastric cancer, treated with surgery. RESULTS The univariable analysis showed that patients with any G (A/G or G/G genotype) allele of MET rs40239 had significantly longer disease-free survival and overall survival compared with those with the AA genotype in the Japanese cohort [hazard ratio (HR): 0.43, P=0.001, and HR: 0.47, P=0.006, respectively]; this remained significant upon multivariable analysis adjusted for age, sex, stage, and type of adjuvant therapy (HR: 0.48; P=0.009, HR: 0.50; P=0.017, respectively). However, there was no significant association of the polymorphism with clinical outcome in the US and Austrian cohorts. When stratified by sex in the Japanese cohort, male individuals, but not female individuals, with the G allele maintained a clinical outcome benefit in both univariable and multivariable analyses. CONCLUSION MET rs40239 may serve as a prognostic biomarker in locoregional gastric cancer. These data also suggest that genetic variants of c-MET may show sex-related differences in the impact on clinical outcome.
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45
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Shirshev SV. Molecular mechanisms of hormonal and hormonal-cytokine control of immune tolerance in pregnancy. BIOCHEMISTRY (MOSCOW) SUPPLEMENT SERIES A: MEMBRANE AND CELL BIOLOGY 2015. [DOI: 10.1134/s1990747814050079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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46
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Hatkevich T, Ramos J, Santos-Sanchez I, Patel YM. A naringenin–tamoxifen combination impairs cell proliferation and survival of MCF-7 breast cancer cells. Exp Cell Res 2014; 327:331-9. [DOI: 10.1016/j.yexcr.2014.05.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 05/09/2014] [Accepted: 05/20/2014] [Indexed: 10/25/2022]
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47
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Mahaldashtian M, Makoolati Z, Ghorbanian MT, Naghdi M, Kouhpayeh SA. In vitro cytotoxicity effects of date palm (Phoenix dactylifera L.) pollen on neonate mouse spermatogonial stem cells. Nat Prod Res 2014; 29:578-81. [PMID: 25189835 DOI: 10.1080/14786419.2014.954115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
There is a fast growing tendency in the use of herbal remedies in developing countries. One of the traditional medicines used for male infertility treatment is date palm (Phoenix dactylifera) pollen (DPP). Isolated spermatogonial stem cells and sertoli cells using enzymatic digestion were grown in Dulbecco's modified Eagle's medium supplemented with 4% foetal bovine serum in the absence or presence of 0.06, 0.25 and 0.62 mg/mL concentrations of aqueous extract of DPP for 2 weeks. The assessment of mean number of the whole cells and the living cells showed that there were no significant differences between the mean viability percentage and proliferation rate between control and experimental groups (P>0.05). As there are no cytotoxicity effects of DPP in our cultural system, this system can be utilised for the enrichment or differentiation of these cells in clinical applications, cell replacement therapy, tissue regeneration and tissue engineering applications.
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Affiliation(s)
- Maryam Mahaldashtian
- a Department of Molecular & Cellular Biology, Faculty of Biology , Damghan University , Semnan , Iran
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48
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Su X, Xu X, Li G, Lin B, Cao J, Teng L. ER-α36: a novel biomarker and potential therapeutic target in breast cancer. Onco Targets Ther 2014; 7:1525-33. [PMID: 25210466 PMCID: PMC4155893 DOI: 10.2147/ott.s65345] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Estrogen receptor-alpha36 (ER-α36) is a 36-kDa variant of estrogen receptor-alpha (ER-α) firstly identified and cloned by Wang et al in 2005. It lacks both transactivation domains (activation function 1 and activation function 2) and has different biological characteristics compared to traditional ER-α (ER-α66). ER-α36 primarily locates on plasma membrane and cytoplasm and functions as a mediator in the rapid membrane-initiated non-genomic signaling pathway. Additionally, it inhibits the traditional genomic signaling pathway mediated by ER-α66 in a dominant-negative pattern. Accumulating evidence has demonstrated that ER-α36 regulates the physiological function of various tissues. Thus, dysregulation of ER-α36 is closely associated with plenty of diseases including cancers. ER-α36 is recognized as a molecular abnormality which solidly correlates to carcinogenesis, aggressiveness, and therapeutic response of breast cancer. Additionally, special attention has been paid to the role of ER-α36 in endocrine therapy resistance. Therefore, ER-α36 provides a novel biomarker of great value for diagnosis, prognosis, and treatment of breast cancer. It may also be a potential therapeutic target for breast cancer patients, especially for those who are resistant to endocrine therapy. In this review, we will overview and update the biological characteristics, underlying mechanism, and function of ER-α36, focusing on its biological function in breast cancer and endocrine therapy resistance. We will evaluate its application value in clinical practice.
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Affiliation(s)
- Xingyun Su
- Department of Surgical Oncology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
| | - Xin Xu
- Department of Surgical Oncology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
| | - Guangliang Li
- Department of Surgical Oncology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China ; Department of Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province, People's Republic of China
| | - Bingyi Lin
- Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou, Zhejiang, People's Republic of China
| | - Jiang Cao
- Clinical Research Center, The 2nd Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
| | - Lisong Teng
- Department of Surgical Oncology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
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Liu Y, Mei C, Liu H, Wang H, Zeng G, Lin J, Xu M. Modulation of cytokine expression in human macrophages by endocrine-disrupting chemical Bisphenol-A. Biochem Biophys Res Commun 2014; 451:592-8. [PMID: 25128825 DOI: 10.1016/j.bbrc.2014.08.031] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 08/06/2014] [Indexed: 10/24/2022]
Abstract
Exposure to environmental endocrine-disrupting chemical Bisphenol-A (BPA) is often associated with dysregulated immune homeostasis, but the mechanisms remain unclear. In the present study, the effects of BPA on the cytokines responses of human macrophages were investigated. Treatment with BPA increased pro-inflammation cytokines tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) production, but decreased anti-inflammation cytokines interleukin-10 (IL-10) and transforming growth factor-β (TGF-β) production in THP1 macrophages, as well as in primary human macrophages. BPA effected cytokines expression through estrogen receptor α/β (ERα/β)-dependent mechanism with the evidence of ERα/β antagonist reversed the expression of cytokines. We also identified that activation of extracellular regulated protein kinases (ERK)/nuclear factor κB (NF-κB) signal cascade marked the effects of BPA on cytokines expression. Our results indicated that BPA effected inflammatory responses of macrophages via modulating of cytokines expression, and provided a new insight into the link between exposure to BPA and human health.
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Affiliation(s)
- Yanzhen Liu
- State Key Laboratory of Applied Microbiology Southern China, Guangzhou 510070, PR China; Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - Chenfang Mei
- State Key Laboratory of Applied Microbiology Southern China, Guangzhou 510070, PR China; Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - Hao Liu
- Affiliated Cancer Hospital and Cancer Research Institute, Guangzhou Medical University, Guangzhou 510095, PR China
| | - Hongsheng Wang
- Department of Microbial and Biochemical Pharmacy, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, PR China
| | - Guoqu Zeng
- State Key Laboratory of Applied Microbiology Southern China, Guangzhou 510070, PR China; Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - Jianhui Lin
- State Key Laboratory of Applied Microbiology Southern China, Guangzhou 510070, PR China; Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - Meiying Xu
- State Key Laboratory of Applied Microbiology Southern China, Guangzhou 510070, PR China; Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou 510070, PR China.
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Al-Zaubai N, Johnstone CN, Leong MM, Li J, Rizzacasa M, Stewart AG. Resolvin D2 supports MCF-7 cell proliferation via activation of estrogen receptor. J Pharmacol Exp Ther 2014; 351:172-80. [PMID: 25077525 DOI: 10.1124/jpet.114.214403] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Inflammation has been implicated in tumor initiation, angiogenesis, and metastasis, and linked to the development of more aggressive, therapy-resistant estrogen receptor (ER)-positive breast cancer. Resolvin D2 (RvD2) is a potent anti-inflammatory lipid mediator. As RvD2 may be synthesized within breast tumors by both tumor cells and the surrounding stroma cells and is present in plasma at bioactive concentrations, we sought to characterize the impact of RvD2 on cell processes underlying breast tumor growth and spread. Trypan-blue exclusion, transfection with estrogen response element (ERE) reporter, real-time quantitative polymerase chain reaction, competitive radioligand binding assays, Western blotting, and immunofluorescence were the techniques used. Unexpectedly, whereas RvD2 (10-1000 nM) supported the proliferation of the ER-positive breast tumor (MCF-7) cells, it did not affect the ER-negative MDA-MB-231 cell number. The proliferative effect of RvD2 in MCF-7 cells was attenuated by the ER antagonist ICI 182,780 (7α-[9-[(4,4,5,5,5-pentafluoropentyl)sulfinyl]nonyl]estra-1,3,5(10)-triene-3,17β-diol). Furthermore, RvD2 increased ERE transcriptional activity in a number of ER-positive breast and ovarian tumor cell lines. This activation was also inhibited by ICI 182,780. RvD2 altered the expression of a subset of estrogen-responsive genes. Although binding experiments showed that RvD2 did not directly compete with [(3)H]17β-estradiol for ER binding, prior exposure of MCF-7 cells to RvD2 resulted in a significant reduction in the apparent cytosolic ER density. Confocal immunocytochemistry and Western blotting studies showed that RvD2 promoted nuclear localization of ERα. These observations indicate that RvD2 displays significant but indirect estrogenic properties and has the potential to play a role in estrogen-dependent breast cancer progression.
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Affiliation(s)
- Nuha Al-Zaubai
- Department of Pharmacology and Therapeutics (N.A.-Z., A.G.S.), Peter MacCallum Cancer Centre (C.N.J.), School of Chemistry, the Bio21 Institute (M.M.L., J.L., M.R.), Sir Peter MacCallum Department of Oncology (C.N.J.), and Department of Pathology (C.N.J.), University of Melbourne, Victoria, Australia
| | - Cameron N Johnstone
- Department of Pharmacology and Therapeutics (N.A.-Z., A.G.S.), Peter MacCallum Cancer Centre (C.N.J.), School of Chemistry, the Bio21 Institute (M.M.L., J.L., M.R.), Sir Peter MacCallum Department of Oncology (C.N.J.), and Department of Pathology (C.N.J.), University of Melbourne, Victoria, Australia
| | - May May Leong
- Department of Pharmacology and Therapeutics (N.A.-Z., A.G.S.), Peter MacCallum Cancer Centre (C.N.J.), School of Chemistry, the Bio21 Institute (M.M.L., J.L., M.R.), Sir Peter MacCallum Department of Oncology (C.N.J.), and Department of Pathology (C.N.J.), University of Melbourne, Victoria, Australia
| | - John Li
- Department of Pharmacology and Therapeutics (N.A.-Z., A.G.S.), Peter MacCallum Cancer Centre (C.N.J.), School of Chemistry, the Bio21 Institute (M.M.L., J.L., M.R.), Sir Peter MacCallum Department of Oncology (C.N.J.), and Department of Pathology (C.N.J.), University of Melbourne, Victoria, Australia
| | - Mark Rizzacasa
- Department of Pharmacology and Therapeutics (N.A.-Z., A.G.S.), Peter MacCallum Cancer Centre (C.N.J.), School of Chemistry, the Bio21 Institute (M.M.L., J.L., M.R.), Sir Peter MacCallum Department of Oncology (C.N.J.), and Department of Pathology (C.N.J.), University of Melbourne, Victoria, Australia
| | - Alastair G Stewart
- Department of Pharmacology and Therapeutics (N.A.-Z., A.G.S.), Peter MacCallum Cancer Centre (C.N.J.), School of Chemistry, the Bio21 Institute (M.M.L., J.L., M.R.), Sir Peter MacCallum Department of Oncology (C.N.J.), and Department of Pathology (C.N.J.), University of Melbourne, Victoria, Australia
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