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Estrogen Receptor Alpha Splice Variants, Post-Translational Modifications, and Their Physiological Functions. Cells 2023; 12:cells12060895. [PMID: 36980236 PMCID: PMC10047206 DOI: 10.3390/cells12060895] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 03/08/2023] [Accepted: 03/11/2023] [Indexed: 03/17/2023] Open
Abstract
The importance of estrogenic signaling for a broad spectrum of biological processes, including reproduction, cancer development, energy metabolism, memory and learning, and so on, has been well documented. Among reported estrogen receptors, estrogen receptor alpha (ERα) has been known to be a major mediator of cellular estrogenic signaling. Accumulating evidence has shown that the regulations of ERα gene transcription, splicing, and expression across the tissues are highly complex. The ERα promoter region is composed of multiple leader exons and 5′-untranslated region (5′-UTR) exons. Differential splicing results in multiple ERα proteins with different molecular weights and functional domains. Furthermore, various post-translational modifications (PTMs) further impact ERα cellular localization, ligand affinity, and therefore functionality. These splicing isoforms and PTMs are differentially expressed in a tissue-specific manner, mediate certain aspects of ERα signaling, and may work even antagonistically against the full-length ERα. The fundamental understanding of the ERα splicing isoforms in normal physiology is limited and association studies of the splicing isoforms and the PTMs are scarce. This review aims to summarize the functional diversity of these ERα variants and the PTMs in normal physiological processes, particularly as studied in transgenic mouse models.
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2
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Wu W, Chen H, Wang R, Chen J, Yu H, Wei Z, Liu X, Xue M, Chen Q, Zhou H, Fu Z. Estrogen receptor-α36 is involved in diallyl sulfide-induced inhibition of malignant growth of HepG2 and Huh7 hepatocellular carcinoma cells. ENVIRONMENTAL TOXICOLOGY 2022; 37:270-281. [PMID: 34724321 DOI: 10.1002/tox.23396] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/01/2021] [Accepted: 10/22/2021] [Indexed: 06/13/2023]
Abstract
Hepatocellular carcinoma (HCC) is a highly malignant disease that currently lacks effective treatment. Epidemiological studies have suggested the preventive role of raw garlic intake in different tumors, such as HCC. Although diallyl sulfide (DAS), the main component of garlic extracts, has been reported to inhibit the growth of HCC cells, the underlying mechanism remains elusive. This study aimed to investigate the inhibitory effect of DAS on the growth of HepG2 and Huh7 hepatocellular carcinoma cells and its underlying mechanism. HepG2 and Huh7 cells were treated with DAS and nude mice were intrahepatically injected with human HCC HepG2 cells and maintained with or without DAS administration for 28 days. MTS and clonogenic assays revealed that DAS inhibited the growth and clonogenicity of HepG2 and Huh7 hepatocellular carcinoma cells. Furthermore, DAS inhibited the growth of xenograft tumors accompanied by a decreased rate of pathological karyomitosis as observed by H&E staining. The expression levels of estrogen receptor-α36 (ER-α36) and epidermal growth factor receptor (EGFR) in HepG2 and Huh7 cells and in xenograft tumors derived from HepG2 cells after DAS treatment were detected by immunohistochemistry and western blotting. We found that DAS disrupted the positive regulatory loop between ER-α36 and EGFR, and decreased the phosphorylation of AKT at Ser 473 both in vivo and in vitro. DAS also induced cell apoptosis, as evidenced by Hoechst and TUNEL staining. Western blotting revealed activation of caspase3, increased BAX and decreased Bcl-2 expression. However, the ER-α36 expression knockdown attenuated DAS-induced ERK and AKT phosphorylation in HCC cells. DAS was also able to inhibit ER-α36-mediated activation of the MAPK/ERK signaling induced by estrogen. Thus, our results indicate that ER-α36 signaling is involved in DAS-induced inhibition of HCC cell growth both in vitro and in vivo.
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Affiliation(s)
- Weiqi Wu
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, People's Republic of China
| | - Hongfei Chen
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, People's Republic of China
| | - Ruobing Wang
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, People's Republic of China
| | - Jiaming Chen
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, People's Republic of China
| | - Haiyan Yu
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, People's Republic of China
| | - Zhixuan Wei
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, People's Republic of China
| | - Xiaotian Liu
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, People's Republic of China
| | - Mingru Xue
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, People's Republic of China
| | - Qiongxia Chen
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, People's Republic of China
| | - Hongyan Zhou
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, People's Republic of China
| | - Zhengqi Fu
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, People's Republic of China
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Mahboobifard F, Dargahi L, Jorjani M, Ramezani Tehrani F, Pourgholami MH. The role of ERα36 in cell type-specific functions of estrogen and cancer development. Pharmacol Res 2021; 163:105307. [DOI: 10.1016/j.phrs.2020.105307] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 11/05/2020] [Accepted: 11/09/2020] [Indexed: 02/07/2023]
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4
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Li X, Cheng Y, Wang Z, Zhou J, Jia Y, He X, Zhao L, Dong Y, Fan Y, Yang X, Shen B, Wu X, Wang J, Xiong C, Wei L, Li X, Wang J. Calcium and TRPV4 promote metastasis by regulating cytoskeleton through the RhoA/ROCK1 pathway in endometrial cancer. Cell Death Dis 2020; 11:1009. [PMID: 33230171 PMCID: PMC7683721 DOI: 10.1038/s41419-020-03181-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/27/2020] [Accepted: 10/27/2020] [Indexed: 12/11/2022]
Abstract
Transient receptor potential vanilloid 4 (TRPV4) is a calcium-permeable cation channel that has been associated with several types of cancer. However, its biological significance, as well as its related mechanism in endometrial cancer (EC) still remains elusive. In this study, we examined the function of calcium in EC, with a specific focus on TRPV4 and its downstream pathway. We reported here on the findings that a high level of serum ionized calcium was significantly correlated with advanced EC progression, and among all the calcium channels, TRPV4 played an essential role, with high levels of TRPV4 expression associated with cancer progression both in vitro and in vivo. Proteomic and bioinformatics analysis revealed that TRPV4 was involved in cytoskeleton regulation and Rho protein pathway, which regulated EC cell migration. Mechanistic investigation demonstrated that TRPV4 and calcium influx acted on the cytoskeleton via the RhoA/ROCK1 pathway, ending with LIMK/cofilin activation, which had an impact on F-actin and paxillin (PXN) levels. Overall, our findings indicated that ionized serum calcium level was significantly associated with poor outcomes and calcium channel TRPV4 should be targeted to improve therapeutic and preventive strategies in EC.
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Affiliation(s)
- Xingchen Li
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Yuan Cheng
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Zhiqi Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Jingyi Zhou
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing, 100044, China
| | - Yuanyuan Jia
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing, 100044, China
| | - Xiangjun He
- Department of Central Laboratory & Institute of Clinical Molecular Biology, Peking University People's Hospital, Beijing, 100044, China
| | - Lijun Zhao
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing, 100044, China
| | - Yangyang Dong
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Yuan Fan
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Xiao Yang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Boqiang Shen
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Xiaotong Wu
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing, 100044, China
| | - Jiaqi Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China.,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing, 100044, China
| | - Chunyang Xiong
- Department of Mechanics and Bioengineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Lihui Wei
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Xiaoping Li
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Jianliu Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China. .,Beijing Key Laboratory of Female Pelvic Floor Disorders Diseases, Beijing, 100044, China.
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5
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Thiebaut C, Konan HP, Guerquin MJ, Chesnel A, Livera G, Le Romancer M, Dumond H. The Role of ERα36 in Development and Tumor Malignancy. Int J Mol Sci 2020; 21:E4116. [PMID: 32526980 PMCID: PMC7312586 DOI: 10.3390/ijms21114116] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/03/2020] [Accepted: 06/04/2020] [Indexed: 02/06/2023] Open
Abstract
Estrogen nuclear receptors, represented by the canonical forms ERα66 and ERβ1, are the main mediators of the estrogen-dependent pathophysiology in mammals. However, numerous isoforms have been identified, stimulating unconventional estrogen response pathways leading to complex cellular and tissue responses. The estrogen receptor variant, ERα36, was cloned in 2005 and is mainly described in the literature to be involved in the progression of mammary tumors and in the acquired resistance to anti-estrogen drugs, such as tamoxifen. In this review, we will first specify the place that ERα36 currently occupies within the diversity of nuclear and membrane estrogen receptors. We will then report recent data on the impact of ERα36 expression and/or activity in normal breast and testicular cells, but also in different types of tumors including mammary tumors, highlighting why ERα36 can now be considered as a marker of malignancy. Finally, we will explain how studying the regulation of ERα36 expression could provide new clues to counteract resistance to cancer treatments in hormone-sensitive tumors.
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Affiliation(s)
- Charlène Thiebaut
- Université de Lorraine, CNRS, CRAN, F-54000 Nancy, France; (C.T.); (A.C.)
| | - Henri-Philippe Konan
- Université de Lyon, F-69000 Lyon, France; (H.-P.K.); (M.L.R.)
- INSERM U1052, Centre de Recherche en Cancérologie de Lyon, F-69000 Lyon, France
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, F-69000 Lyon, France
| | - Marie-Justine Guerquin
- Laboratory of Development of the Gonads, UMRE008 Genetic Stability Stem Cells and Radiation, Université de Paris, Université Paris Saclay, CEA, F-92265 Fontenay aux Roses, France; (M.-J.G.); (G.L.)
| | - Amand Chesnel
- Université de Lorraine, CNRS, CRAN, F-54000 Nancy, France; (C.T.); (A.C.)
| | - Gabriel Livera
- Laboratory of Development of the Gonads, UMRE008 Genetic Stability Stem Cells and Radiation, Université de Paris, Université Paris Saclay, CEA, F-92265 Fontenay aux Roses, France; (M.-J.G.); (G.L.)
| | - Muriel Le Romancer
- Université de Lyon, F-69000 Lyon, France; (H.-P.K.); (M.L.R.)
- INSERM U1052, Centre de Recherche en Cancérologie de Lyon, F-69000 Lyon, France
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, F-69000 Lyon, France
| | - Hélène Dumond
- Université de Lorraine, CNRS, CRAN, F-54000 Nancy, France; (C.T.); (A.C.)
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Huang H, Zhou Z, Li H, Zhang Y, Zhao L, Wang Z, Zhang Q, Liu C, Han C, Wang Q, Pu C, Zou W. Down-regulation of ER-α36 mRNA in serum exosomes of the patients with hepatocellular carcinoma. Clin Transl Med 2020; 10:346-352. [PMID: 32508028 PMCID: PMC7240843 DOI: 10.1002/ctm2.18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/15/2020] [Accepted: 03/15/2020] [Indexed: 12/16/2022] Open
Affiliation(s)
- Hui Huang
- Department of BiobankThe Affiliated Sixth People's Hospital of Dalian Medical UniversityDalianChina
| | - Zhiyuan Zhou
- College of Life ScienceLiaoning Normal UniversityDalianChina
| | - Hongyan Li
- College of Life ScienceLiaoning Normal UniversityDalianChina
| | - Yong Zhang
- Department of BiobankThe Affiliated Sixth People's Hospital of Dalian Medical UniversityDalianChina
| | - Liang Zhao
- Department of BiobankThe Affiliated Sixth People's Hospital of Dalian Medical UniversityDalianChina
| | - Zhidong Wang
- Department of BiobankThe Affiliated Sixth People's Hospital of Dalian Medical UniversityDalianChina
| | - Qiqi Zhang
- Department of BiobankThe Affiliated Sixth People's Hospital of Dalian Medical UniversityDalianChina
| | - Chunyan Liu
- Department of BiobankThe Affiliated Sixth People's Hospital of Dalian Medical UniversityDalianChina
| | - Changxin Han
- Department of BiobankThe Affiliated Sixth People's Hospital of Dalian Medical UniversityDalianChina
| | - Qi Wang
- College of Life ScienceLiaoning Normal UniversityDalianChina
| | - Chunwen Pu
- Department of BiobankThe Affiliated Sixth People's Hospital of Dalian Medical UniversityDalianChina
| | - Wei Zou
- College of Life ScienceLiaoning Normal UniversityDalianChina
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7
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Pagano MT, Ortona E, Dupuis ML. A Role for Estrogen Receptor alpha36 in Cancer Progression. Front Endocrinol (Lausanne) 2020; 11:506. [PMID: 32849292 PMCID: PMC7411082 DOI: 10.3389/fendo.2020.00506] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 06/24/2020] [Indexed: 12/22/2022] Open
Abstract
Estrogen receptor α (ERα) functions as a ligand dependent transcription factor that directly binds specific estrogen responsive elements, thus regulating the transcription of estrogen sensitive genes. ERα has also been shown to be associated with the plasma membrane (membrane associated ERα, mERα), concentrated in lipid rafts, plasma membrane microdomains with a distinct lipid composition, where it transduces membrane-initiated estrogen-dependent activation of the mitogen-activated protein (MAP) kinase signaling pathway. Two isoforms of ERα have been described: the "traditional" ERα66 (66 kDa) and a lower molecular weight variant: the ERα46 (46 kDa). More recently, a novel ERα variant with a molecular mass of 36 kDa (ERα36) has been discovered. Notably, ERα36 has been found expressed in different human tumor cells, including both ER- positive and ER- negative breast cancer cells. Estrogen signaling at the cell membrane via ERα36 appears as capable of activating multiple pathways of importance for cancer aggressiveness and metastatic potential. The presence of serum autoantibodies reacting with mERα (anti-ERα Abs) in a large percentage of patients with breast cancer has recently been reported by our group. These anti-ERα Abs seem to act as estrogen agonists rapidly triggering MAP kinase pathway activation thus inducing tumor cell proliferation and overcoming cell resistance to anti-estrogen drug tamoxifen. In this review, we describe the involvement of ERα36 in different tumors. We also report the potential pathogenetic activity of anti-ERα Abs and their implication in drug resistance.
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8
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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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9
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Sołtysik K, Czekaj P. ERα36--Another piece of the estrogen puzzle. Eur J Cell Biol 2015; 94:611-25. [PMID: 26522827 DOI: 10.1016/j.ejcb.2015.10.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 09/03/2015] [Accepted: 10/09/2015] [Indexed: 12/22/2022] Open
Abstract
Although the nuclear action of estrogen receptors (ER) is a well-known fact, evidence supporting membrane estrogen receptors is steadily accumulating. New ER variants of unrecognized function have been discovered. ERα is a product of the ESR1 gene. It serves not only as a template for the full-length 66kDa protein, but also for smaller isoforms which exist as independent receptors. The recently discovered ERα36 (36kDa), consisting of 310 amino acids of total 595 ERα66 protein residues, is an example of that group. The transcription initiation site is identified in the first intron of the ESR1 gene. C-Terminal 27 amino acids are encoded by previously unknown exon 9. The presence of this unique C-terminal sequence creates an opportunity for the production of selective antibodies. ERα36 has been shown to have a high affinity to the cell membrane and as much as 90% of the protein can be bound with it. Post-translational palmitoylation is suspected to play a crucial role in ERα36 anchoring to the cell membrane. In silico analysis suggests the existence of a potential transmembrane domain in ERα36. ERα36 was found in most cells of animals at various ages, but its exact physiological function remains to be fully elucidated. It seems that cells traditionally considered as being deprived of ER are able to respond to hormonal stimulation via the ERα36 receptor. Moreover, ERα36 displays unique pharmacological properties and its action may be behind antiestrogen resistance. The use of ERα36 in cancer diagnosis gives rise to great expectations.
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Affiliation(s)
- Kamil Sołtysik
- Students Scientific Society, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
| | - Piotr Czekaj
- Department of Cytophysiology, Chair of Histology and Embryology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland.
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Zhang Y, Zhao D, Gong C, Zhang F, He J, Zhang W, Zhao Y, Sun J. Prognostic role of hormone receptors in endometrial cancer: a systematic review and meta-analysis. World J Surg Oncol 2015; 13:208. [PMID: 26108802 PMCID: PMC4511445 DOI: 10.1186/s12957-015-0619-1] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Accepted: 06/10/2015] [Indexed: 12/19/2022] Open
Abstract
Background The aim of this study was to summarize the global predicting role of hormone receptors for survival in endometrial cancer. Methods Eligible studies were identified and assessed for quality through multiple search strategies. Data were collected from studies comparing overall survival (OS), cancer-specific survival (CSS), or progression-free survival (PFS) in patients with elevated levels of estrogen receptor (ER), progesterone receptor (PR), or human epidermal growth factor receptor 2 (HER2) with those in patients with lower levels. The combined hazard ratios of ER, PR, and HER2 for survival were calculated. Results A total of 98 studies were included for meta-analysis (44 for ER, 38 for PR, and 16 for HER2). Higher levels of either ER or PR could significantly indicate better survival. The pooled hazard ratios (HRs) of ER for OS, CSS, and PFS were 0.75 (95 % CI, 0.68–0.83), 0.45 (95 % CI, 0.33–0.62), and 0.66 (95 % CI, 0.52–0.85), respectively. The combined HRs of PR for OS, CSS, and PFS reached 0.63 (95 % CI, 0.56–0.71), 0.62 (95 % CI, 0.42–0.93), and 0.45 (95 % CI, 0.30–0.68), respectively. In contrast, elevated levels of HER2 could predict worse outcome with a HR of 1.98 (95 % CI, 1.49–2.62) for OS, and a HR of 2.26 (95 % CI, 1.57–3.25) for PFS. Conclusions In patients with endometrial cancer, higher level of ER and PR predicted favorable survival, and increased level of HER2 was associated with poorer survival. All of the three hormone receptors had prognostic value for survival.
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Affiliation(s)
- Yanli Zhang
- Department of Minimally Invasive Gynecologic Surgery, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Changle Road #536, Shanghai, 200040, People's Republic of China.
| | - Dong Zhao
- Department of Minimally Invasive Gynecologic Surgery, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Changle Road #536, Shanghai, 200040, People's Republic of China.
| | - Changguo Gong
- Institutes for Advanced Interdisciplinary Research, East China Normal University, Shanghai, People's Republic of China.
| | - Fengmei Zhang
- Institutes for Advanced Interdisciplinary Research, East China Normal University, Shanghai, People's Republic of China.
| | - Jing He
- Institutes for Advanced Interdisciplinary Research, East China Normal University, Shanghai, People's Republic of China.
| | - Wei Zhang
- Institutes for Advanced Interdisciplinary Research, East China Normal University, Shanghai, People's Republic of China.
| | - Yulan Zhao
- School of Life Science, East China Normal University, North Zhongshan Road #3663, Shanghai, People's Republic of China.
| | - Jing Sun
- Department of Minimally Invasive Gynecologic Surgery, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Changle Road #536, Shanghai, 200040, People's Republic of China.
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Hao J, Bao X, Jin B, Wang X, Mao Z, Li X, Wei L, Shen D, Wang JL. Ca2+ channel subunit α 1D promotes proliferation and migration of endometrial cancer cells mediated by 17β-estradiol via the G protein-coupled estrogen receptor. FASEB J 2015; 29:2883-93. [PMID: 25805831 DOI: 10.1096/fj.14-265603] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 03/05/2015] [Indexed: 12/15/2022]
Abstract
Calcium and calcium channels are closely related to the estrogen-induced nongenomic effect of endometrial carcinoma, but the specific role of calcium channels is unknown. This study aimed to explore the expression and the biologic effect of the L-type calcium channel in endometrial carcinoma cells and to clarify the molecular mechanism of the relationship between L-type calcium channels and estrogen. The immunohistochemical results showed that Ca(2+) channel subunit α 1D (Cav1.3) expression was high in atypical hyperplasia (1.90 ± 0.35) and endometrial carcinoma tissues (2.05 ± 0.82) but weak (0.80 ± 0.15) in benign endometrial tissues (P < 0.05). Treatment with 17β-estradiol rapidly increased Cav1.3 expression in a dose- and time-dependent manner, and 100 nM cell-impermeable β-estradiol-6-(O-carboxymethyl)oxime:bovine serum albumin also promoted Cav1.3 expression. Transfection with small interfering RNA against G protein-coupled estrogen receptor (GPER) suppressed estrogen-induced up-regulation of Cav1.3 compared with control cells and markedly reduced the estrogen-induced phosphorylation of ERK1/2 and CREB. Knocking down the Cav1.3 significantly suppressed estrogen-stimulated Ca(2+) influx, cell proliferation, and migration in endometrial cancer cells. Taken together, Cav1.3 was overexpressed in atypical hyperplasia and endometrial carcinoma, and the estrogen-induced phosphorylation of downstream molecular ERK1/2 and CREB is the result of activation of the GPER pathway. L-type channel Cav1.3 is required for estrogen-stimulated Ca(2+) influx and contributes broadly to the development of endometrial cancer. The Cav1.3 channel may be a new target for endometrial carcinoma treatment.
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Affiliation(s)
- Juan Hao
- *Department of Obstetrics and Gynaecology and Department of Pathology, Peking University People's Hospital, Beijing, China; and Department of Biochemistry and Molecular Biology, Peking University, Beijing, China
| | - Xiaoxia Bao
- *Department of Obstetrics and Gynaecology and Department of Pathology, Peking University People's Hospital, Beijing, China; and Department of Biochemistry and Molecular Biology, Peking University, Beijing, China
| | - Bo Jin
- *Department of Obstetrics and Gynaecology and Department of Pathology, Peking University People's Hospital, Beijing, China; and Department of Biochemistry and Molecular Biology, Peking University, Beijing, China
| | - Xiujuan Wang
- *Department of Obstetrics and Gynaecology and Department of Pathology, Peking University People's Hospital, Beijing, China; and Department of Biochemistry and Molecular Biology, Peking University, Beijing, China
| | - Zebin Mao
- *Department of Obstetrics and Gynaecology and Department of Pathology, Peking University People's Hospital, Beijing, China; and Department of Biochemistry and Molecular Biology, Peking University, Beijing, China
| | - Xiaoping Li
- *Department of Obstetrics and Gynaecology and Department of Pathology, Peking University People's Hospital, Beijing, China; and Department of Biochemistry and Molecular Biology, Peking University, Beijing, China
| | - Lihui Wei
- *Department of Obstetrics and Gynaecology and Department of Pathology, Peking University People's Hospital, Beijing, China; and Department of Biochemistry and Molecular Biology, Peking University, Beijing, China
| | - Danhua Shen
- *Department of Obstetrics and Gynaecology and Department of Pathology, Peking University People's Hospital, Beijing, China; and Department of Biochemistry and Molecular Biology, Peking University, Beijing, China
| | - Jian-Liu Wang
- *Department of Obstetrics and Gynaecology and Department of Pathology, Peking University People's Hospital, Beijing, China; and Department of Biochemistry and Molecular Biology, Peking University, Beijing, China
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Guo J, Gao J, Yu X, Luo H, Xiong X, Huang O. Expression of DJ-1 and mTOR in eutopic and ectopic endometria of patients with endometriosis and adenomyosis. Gynecol Obstet Invest 2015; 79:195-200. [PMID: 25721338 DOI: 10.1159/000365569] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 06/30/2014] [Indexed: 11/19/2022]
Abstract
OBJECTIVE Endometrial cells may aberrantly express molecules involved in invasion and migration, leading to endometriosis. The aim of this study was to investigate the expression of DJ-1 and phosphorylated mammalian target of rapamycin (p-mTOR) in ectopic and eutopic endometria of endometriosis and adenomyosis. METHODS Endometrial specimens were obtained from healthy non-menopausal women (n = 17) or patients with ovarian endometriotic cysts (n = 48) or adenomyosis (n = 30) during January 2011 to June 2012. The expressions of DJ-1 and p-mTOR were evaluated by immunohistochemistry and western blotting methods. RESULTS The expressions of DJ-1 and p-mTOR were significantly higher in the ectopic endometria than those in the eutopic endometria of endometriosis and adenomyosis patients or normal endometria (FDR < 0.05). DJ-1 expression was positively correlated with the p-mTOR expression no matter at endometriosis (r = 0.736, FDR < 0.001) or adenomyosis (r = 0.809, FDR < 0.001). CONCLUSION DJ-1 protein may be involved in endometrial cells proliferation, migration and angiogenesis by modulating the PI3K/Akt/p-mTOR signaling pathway, which provides an underlying theoretical target for endometriosis and adenomyosis.
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Affiliation(s)
- Jiubai Guo
- Medical Department of Graduate School of Nanchang University, Nanchang, Jiangxi, China
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Genc M, Sivrikoz ON, Sahin N, Celik E, Turan GA, Guclu S. Does uterine prolapse alter endometrial cyclooxygenase 2 expression and promote the development of premalignant lesions? Gynecol Obstet Invest 2015; 80:119-23. [PMID: 25662613 DOI: 10.1159/000371348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 12/03/2014] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the expression of cyclooxygenase 2 (COX-2) and its association with the development of premalignant lesions in gland structures of the endometrium in patients with uterine prolapse, a condition which exposes the uterus to mechanical and infectious stress. METHODS The study included 102 patients who underwent hysterectomy to correct grade 3-4 uterine prolapse and 105 patients who underwent hysterectomy for other causes. Endometrial gland structures underwent immunohistochemical staining and COX-2 expression was graded. Grades 0 and 1 represent low expression; grades 2 and 3 correspond to high levels of COX-2 expression. RESULTS The prevalence of grade 2-3 COX-2 expression was significantly higher in the endometrial gland structures of patients with prolapse and hyperplasia compared to the remaining patients (p = 0.014). Grade 0-1 COX-2 expression was significantly more common in the endometrial gland structures of patients without uterine prolapse or hyperplasia (p = 0.004). Among the patients without endometrial hyperplasia, COX-2 expression was elevated in the endometrial gland structures of those with uterine prolapse compared to those without prolapse. CONCLUSION Elevated COX-2 expression may explain the presence of unexpected premalignant lesions of the endometrium in patients with uterine prolapse.
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Affiliation(s)
- Mine Genc
- Department of Obstetrics and Gynecology, Sifa University School of Medicine, Izmir, Turkey
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Gu Y, Chen T, López E, Wu W, Wang X, Cao J, Teng L. The therapeutic target of estrogen receptor-alpha36 in estrogen-dependent tumors. J Transl Med 2014; 12:16. [PMID: 24447535 PMCID: PMC3899443 DOI: 10.1186/1479-5876-12-16] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Accepted: 01/18/2014] [Indexed: 12/24/2022] Open
Abstract
Estrogen receptor-alpha36 (ER-α36) is a new isoform of estrogen receptors without transcriptional activation domains of the classical ER-α(ER - α66). ER-α36 is mainly located in cytoplasm and plasma membrane. ER-α36 mediates non-genomic signaling and is involved in genomic signaling of other ERs. Recently ER-α36 is found to play a critical role in the development of estrogen-dependent cancers and endocrine resistance of breast cancer. The present article overviews and updates the biological nature and function of ER-α36, potential interaction of ER-α36 with other estrogen receptors and growth factor receptors, intracellular signaling pathways, potential mechanism by which ER-α36 may play an important role in the development of tumor resistance to endocrine therapies.
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Affiliation(s)
| | | | | | | | - Xiangdong Wang
- Department of Surgical Oncology, The 1st Affiliated Hospital, School of Medicine, Zhejiang University, 79, Qingchun Road, Hangzhou 310003 Zhejiang Province, China.
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