1
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Kang H, Kim SC, Oh Y. Fucoxanthin Abrogates Ionizing Radiation-Induced Inflammatory Responses by Modulating Sirtuin 1 in Macrophages. Mar Drugs 2023; 21:635. [PMID: 38132956 PMCID: PMC10744970 DOI: 10.3390/md21120635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/23/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
Ionizing radiation (IR) triggers an overproduction of reactive oxygen species (ROS), disrupting the normal function of both immune and metabolic systems, leading to inflammation and metabolic disturbances. To address the pressing requirement for protection against IR, fucoxanthin (FX), a naturally occurring compound extracted from algae, was utilized as an efficient radioprotective agent in macrophages. In this study, we cultured murine RAW 264.7 macrophages and treated them with FX, along with agents influencing the activity of sirtuin 1 (SIRT1) and estrogen receptor α (ERα), to investigate their impact on IR-induced cellular responses. FX significantly attenuated IR-induced upregulation of pro-inflammatory genes (Il1b, Tnf, and Ccl2) and inhibited macrophage polarization toward the pro-inflammatory M1 phenotype. Additionally, FX regulated IR-induced metabolic genes mediating glycolysis and mitochondrial biogenesis. The ability of FX to mitigate IR-induced inflammation and glycolysis was ascribed to the expression and activity of SIRT1 and ERα in macrophages. This study not only uncovers the underlying mechanisms of FX's radioprotective properties but also highlights its potential as a protective agent against the detrimental effects of IR, thus offering new opportunities for enhancing radiation protection in the future.
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Affiliation(s)
- Hyunju Kang
- Department of Food and Nutrition, Keimyung University, 1095 Dalgubeol-Daero, Daegu 42601, Republic of Korea;
| | - Seon-Chil Kim
- Department of Biomedical Engineering, Keimyung University, 1095 Dalgubeol-Daero, Daegu 42601, Republic of Korea
- Department of Medical Informatics, School of Medicine, Keimyung University, 1095 Dalgubeol-Daero, Daegu 42601, Republic of Korea
| | - Youngkee Oh
- Department of Radiation Oncology, School of Medicine, Keimyung University, 1095 Dalgubeol-Daero, Daegu 42601, Republic of Korea;
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2
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Wu QJ, Zhang TN, Chen HH, Yu XF, Lv JL, Liu YY, Liu YS, Zheng G, Zhao JQ, Wei YF, Guo JY, Liu FH, Chang Q, Zhang YX, Liu CG, Zhao YH. The sirtuin family in health and disease. Signal Transduct Target Ther 2022; 7:402. [PMID: 36581622 PMCID: PMC9797940 DOI: 10.1038/s41392-022-01257-8] [Citation(s) in RCA: 212] [Impact Index Per Article: 106.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 11/10/2022] [Accepted: 11/18/2022] [Indexed: 12/30/2022] Open
Abstract
Sirtuins (SIRTs) are nicotine adenine dinucleotide(+)-dependent histone deacetylases regulating critical signaling pathways in prokaryotes and eukaryotes, and are involved in numerous biological processes. Currently, seven mammalian homologs of yeast Sir2 named SIRT1 to SIRT7 have been identified. Increasing evidence has suggested the vital roles of seven members of the SIRT family in health and disease conditions. Notably, this protein family plays a variety of important roles in cellular biology such as inflammation, metabolism, oxidative stress, and apoptosis, etc., thus, it is considered a potential therapeutic target for different kinds of pathologies including cancer, cardiovascular disease, respiratory disease, and other conditions. Moreover, identification of SIRT modulators and exploring the functions of these different modulators have prompted increased efforts to discover new small molecules, which can modify SIRT activity. Furthermore, several randomized controlled trials have indicated that different interventions might affect the expression of SIRT protein in human samples, and supplementation of SIRT modulators might have diverse impact on physiological function in different participants. In this review, we introduce the history and structure of the SIRT protein family, discuss the molecular mechanisms and biological functions of seven members of the SIRT protein family, elaborate on the regulatory roles of SIRTs in human disease, summarize SIRT inhibitors and activators, and review related clinical studies.
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Affiliation(s)
- Qi-Jun Wu
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Tie-Ning Zhang
- grid.412467.20000 0004 1806 3501Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Huan-Huan Chen
- grid.412467.20000 0004 1806 3501Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xue-Fei Yu
- grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jia-Le Lv
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yu-Yang Liu
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ya-Shu Liu
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Gang Zheng
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jun-Qi Zhao
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yi-Fan Wei
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jing-Yi Guo
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Fang-Hua Liu
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qing Chang
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yi-Xiao Zhang
- grid.412467.20000 0004 1806 3501Department of Urology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Cai-Gang Liu
- grid.412467.20000 0004 1806 3501Department of Cancer, Breast Cancer Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yu-Hong Zhao
- grid.412467.20000 0004 1806 3501Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China ,grid.412467.20000 0004 1806 3501Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
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3
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Onyiba CI, Scarlett CJ, Weidenhofer J. The Mechanistic Roles of Sirtuins in Breast and Prostate Cancer. Cancers (Basel) 2022; 14:cancers14205118. [PMID: 36291902 PMCID: PMC9600935 DOI: 10.3390/cancers14205118] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/06/2022] [Accepted: 10/14/2022] [Indexed: 12/02/2022] Open
Abstract
Simple Summary There are diverse reports of the dual role of sirtuin genes and proteins in breast and prostate cancers. This review discusses the current information on the tumor promotion or suppression roles of SIRT1–7 in breast and prostate cancers. Precisely, we highlight that sirtuins regulate various proteins implicated in proliferation, apoptosis, autophagy, chemoresistance, invasion, migration, and metastasis of both breast and prostate cancer. We also provide evidence of the direct regulation of sirtuins by miRNAs, highlighting the consequences of this regulation in breast and prostate cancer. Overall, this review reveals the potential value of sirtuins as biomarkers and/or targets for improved treatment of breast and prostate cancers. Abstract Mammalian sirtuins (SIRT1–7) are involved in a myriad of cellular processes, including apoptosis, proliferation, differentiation, epithelial-mesenchymal transition, aging, DNA repair, senescence, viability, survival, and stress response. In this review, we discuss the current information on the mechanistic roles of SIRT1–7 and their downstream effects (tumor promotion or suppression) in cancers of the breast and prostate. Specifically, we highlight the involvement of sirtuins in the regulation of various proteins implicated in proliferation, apoptosis, autophagy, chemoresistance, invasion, migration, and metastasis of breast and prostate cancer. Additionally, we highlight the available information regarding SIRT1–7 regulation by miRNAs, laying much emphasis on the consequences in the progression of breast and prostate cancer.
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Affiliation(s)
- Cosmos Ifeanyi Onyiba
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Ourimbah, NSW 2258, Australia
- Correspondence:
| | - Christopher J. Scarlett
- School of Environmental and Life Sciences, College of Engineering, Science and Environment, University of Newcastle, Ourimbah, NSW 2258, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
| | - Judith Weidenhofer
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Ourimbah, NSW 2258, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
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4
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Jiang S, Yu J, Zhu M, Zhang X, Zhang Y, Zhang Q, Hu Q, Lv M. Gambogic acid inhibits epithelial–mesenchymal transition in breast cancer cells through upregulation of
SIRT1
expression in vitro. PRECISION MEDICAL SCIENCES 2022. [DOI: 10.1002/prm2.12057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Shi‐ye Jiang
- Center of Digestive Endoscopy The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research Nanjing Jiangsu Province China
| | - Jun Yu
- Department of Scientific Research The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research Nanjing Jiangsu Province China
| | - Ming Zhu
- Department of Scientific Research The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research Nanjing Jiangsu Province China
| | - Xiao‐mei Zhang
- Department of Scientific Research The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research Nanjing Jiangsu Province China
| | - Yuan‐ying Zhang
- Department of Scientific Research The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research Nanjing Jiangsu Province China
| | - Qin Zhang
- Department of Surgery The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research Nanjing Jiangsu Province China
| | - Qing Hu
- Department of Surgery The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research Nanjing Jiangsu Province China
| | - Min Lv
- Department of Scientific Research The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research Nanjing Jiangsu Province China
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5
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Järvenpää J, Rahnasto-Rilla M, Lahtela-Kakkonen M, Küblbeck J. Profiling the regulatory interplay of BET bromodomains and Sirtuins in cancer cell lines. Biomed Pharmacother 2022; 147:112652. [DOI: 10.1016/j.biopha.2022.112652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/14/2022] [Accepted: 01/14/2022] [Indexed: 12/27/2022] Open
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6
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Min Y, Feng Y, Luo H, Hu D, Wei X, He D, Yin G, Fan S. Identifying and Validating of an Autophagy-Related Gene Signature for the Prediction of Early Relapse in Breast Cancer. Front Endocrinol (Lausanne) 2022; 13:824362. [PMID: 35250881 PMCID: PMC8888901 DOI: 10.3389/fendo.2022.824362] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 01/26/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Compelling evidence has demonstrated the pivotal role of autophagy in the prognosis of breast cancer. Breast cancer (BC) patients with early relapse consistently exhibited worse survival. METHODS The autophagy-related genes were derived from the Human Autophagy Database (HADb) and high-sequencing data were obtained from The Cancer Genome Atlas (TCGA). Discrepantly expressed autophagy genes (DEAGs) between early relapse and long-term survival groups were performed using the Linear Models for Microarray data (LIMMA) method. Lasso Cox regression analysis was conducted for the selection of the 4-gene autophagy-related gene signature. GSE42568 and GSE21653 databases were enrolled in this study for the external validation of the signature. Then patients were divided into high and low-risk groups based on the specific score formula. GSEA was used to discover the related signaling pathway. The Kaplan-Meier curves and the receiver operating characteristic (ROC) curves were used to evaluate the discrimination and accuracy of the 4-gene signature. RESULTS A signature composed of four autophagy-related mRNA including APOL1, HSPA8, SIRT1, and TP73, was identified as significantly associated with the early relapse in BC patients. Time-dependent receiver-operating characteristic at 1 year suggested remarkable accuracy of the signature [area under the curve (AUC = 0.748)]. The risk score model based on the autophagy-related signature showed favorable predicting value in 1-, 2-, and 3-year relapse-free survival (RFS) in training and two validating cohorts. The GSEA displayed gene sets were remarkably enriched in carcinogenic activation pathways and autophagy-related pathways. The nomogram involving three variables (progesterone receptor status, T stage, and 4-gene signature) exhibited relatively good discrimination with a C-index of 0.766. CONCLUSIONS Our study establishes an autophagy-related 4-gene signature that can effectively stratify the high-risk and low-risk BC patients for early relapse. Combined with the clinicopathological variables, the signature could significantly help oncologists tailor more efficient treatment strategies for BC patients.
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Affiliation(s)
- Yu Min
- Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yang Feng
- Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Haojun Luo
- Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Daixing Hu
- Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaoyuan Wei
- Department of Cardiology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Danshuang He
- Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Guobing Yin
- Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Shenghao Fan
- Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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7
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Pande S, Ranjan R, Ryazanova M, Shuvaev AN, Salmina AB, Kratasyuk VA. Buckwheat-enriched diet alleviates bisphenol A mediated oxidative stress via modulation of sirtuin 1 and antioxidant status in experimental rats. Food Chem 2021; 373:131507. [PMID: 34763933 DOI: 10.1016/j.foodchem.2021.131507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 10/25/2021] [Accepted: 10/29/2021] [Indexed: 11/04/2022]
Abstract
Present study investigated effect of dietary buckwheat in alleviating bisphenol A (BPA) mediated oxidative stress, concomitant sirtuin1 levels in serum, stomach, and liver of rats. Experimental group A and B ingested standard diet, C and D consumed buckwheat (30%); group A and C drank normal water, B and C had BPA contamination (10 mg L-1). Sirtuin1 mean B/A ratio nearing unity in all tissues reveals inertness of BPA towards sirtuin1. Dietary buckwheat improved sirtuin1 levels both in normal (mean C/A ratio of serum, 1.65; liver, 1.24; stomach, 1.78) and BPA fed state (mean D/B ratio of serum, 1.9; liver, 1.26; stomach, 1.75). Buckwheat augmented antioxidant status in BPA fed rats as seen in mean D/B ratio of serum (catalase, 2.4; glutathione reductase (GR), 1.33; Thiols, 1.2), liver (catalase, 2; GR, 2.5; Thiols, 1.36) and stomach (catalase, 1.31; GR, 1.5; Thiols, 1.33). Therefore, buckwheat counters BPA-led oxidative stress and modulates sirtuin1.
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Affiliation(s)
- Shubhra Pande
- Laboratory of Bioluminescent Biotechnologies, Department of Biophysics, Institute of Fundamental Biology and Biotechnology, Siberian Federal University, Svobodny Prospect 79, Krasnoyarsk 660041, Russia; Research Institute of Molecular Medicine and Pathobiochemistry, Krasnoyarsk State Medical University named after Prof. V.F. Voino-Yasenetsky, P. Zheleznyaka 1, Krasnoyarsk 660022, Russia.
| | - Rajeev Ranjan
- Laboratory of Bioluminescent Biotechnologies, Department of Biophysics, Institute of Fundamental Biology and Biotechnology, Siberian Federal University, Svobodny Prospect 79, Krasnoyarsk 660041, Russia
| | - Maria Ryazanova
- Laboratory of Bioluminescent Biotechnologies, Department of Biophysics, Institute of Fundamental Biology and Biotechnology, Siberian Federal University, Svobodny Prospect 79, Krasnoyarsk 660041, Russia
| | - Anton N Shuvaev
- Research Institute of Molecular Medicine and Pathobiochemistry, Krasnoyarsk State Medical University named after Prof. V.F. Voino-Yasenetsky, P. Zheleznyaka 1, Krasnoyarsk 660022, Russia
| | - Alla B Salmina
- Research Institute of Molecular Medicine and Pathobiochemistry, Krasnoyarsk State Medical University named after Prof. V.F. Voino-Yasenetsky, P. Zheleznyaka 1, Krasnoyarsk 660022, Russia; Laboratory of Experimental Brain Cytology, Research Center of Neurology, Moscow, Russia
| | - Valentina A Kratasyuk
- Laboratory of Bioluminescent Biotechnologies, Department of Biophysics, Institute of Fundamental Biology and Biotechnology, Siberian Federal University, Svobodny Prospect 79, Krasnoyarsk 660041, Russia; Institute of Biophysics SB RAS, Federal Research Center 'Krasnoyarsk Science Center SB RAS', Akademgorodok 50/50, Krasnoyarsk 660036, Russia
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8
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Chen F, Han B, Meng Y, Han Y, Liu B, Zhang B, Chang Y, Cao P, Fan Y, Tan K. Ceruloplasmin correlates with immune infiltration and serves as a prognostic biomarker in breast cancer. Aging (Albany NY) 2021; 13:20438-20467. [PMID: 34413268 PMCID: PMC8436892 DOI: 10.18632/aging.203427] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 08/02/2021] [Indexed: 12/29/2022]
Abstract
Breast-invasive carcinoma (BRCA) is the most frequent and malignant tumor in females. Ceruloplasmin (CP) is a multifunctional molecule involved in iron metabolism, but its expression profile, prognostic potential and relationship with immune cell infiltration in BRCA are unknown. Ceruloplasmin mRNA and protein expression was significantly decreased in BRCA patients according to the Oncomine, UALCAN, GEPIA and TCGA databases. Ceruloplasmin expression was strongly correlated with various clinicopathological features of BRCA patients. BRCA patients with high ceruloplasmin expression exhibited shorter survival times than those with low ceruloplasmin expression based on the Kaplan-Meier plotter and PrognoScan databases. GO and KEGG analyses and GSEA revealed a strong correlation between ceruloplasmin and various immune-related pathways. Ceruloplasmin expression was significantly associated with the infiltration of immune cells into tumor sites by analyzing the TIMER and CIBERSORT. Additionally, ceruloplasmin was positively correlated with immune checkpoints in BRCA. These findings suggest that low ceruloplasmin expression correlates with a favorable prognosis and tumor immune cell infiltration in BRCA patients. Ceruloplasmin may serve as a therapeutic target and predict the efficacy of immunotherapy for BRCA.
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Affiliation(s)
- Fei Chen
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, Hebei, China
| | - Bihui Han
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, Hebei, China
| | - Yanxiu Meng
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, Hebei, China
| | - Yu Han
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, Hebei, China
| | - Bing Liu
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, Hebei, China
| | - Bo Zhang
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, Hebei, China
| | - Yanzhong Chang
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, Hebei, China
| | - Pengxiu Cao
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, Hebei, China
| | - Yumei Fan
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, Hebei, China
| | - Ke Tan
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024, Hebei, China
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Wang X, Zhang L, Dai Q, Si H, Zhang L, Eltom SE, Si H. Combined Luteolin and Indole-3-Carbinol Synergistically Constrains ERα-Positive Breast Cancer by Dual Inhibiting Estrogen Receptor Alpha and Cyclin-Dependent Kinase 4/6 Pathway in Cultured Cells and Xenograft Mice. Cancers (Basel) 2021; 13:cancers13092116. [PMID: 33925607 PMCID: PMC8123907 DOI: 10.3390/cancers13092116] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 04/19/2021] [Accepted: 04/23/2021] [Indexed: 12/13/2022] Open
Abstract
Simple Summary Anti-cancer effects of bioactive compounds have been extensively investigated; however, the effective dosages of the bioactive compounds are too high to be obtained by oral intake. Our study aimed to assess if combined two bioactive compounds, luteolin (LUT) and indole-3-carbinol (I3C), at low dosages that LUT or I3C along has no significant effect, synergistically exerts anti-breast cancer. We confirmed that combined LUT and I3C synergistically suppressed estrogen receptor-alpha positive breast cancer in cultured cells and cells-derived xenograft mice. Our results also indicated two possible molecular pathways involving the synergistic effects of the combination of LUT and I3C. Our findings provide a practical approach to treat or prevent breast cancer by combining two bioactive compounds. Abstract The high concentrations of individual phytochemicals in vitro studies cannot be physiologically achieved in humans. Our solution for this concentration gap between in vitro and human studies is to combine two or more phytochemicals. We screened 12 phytochemicals by pairwise combining two compounds at a low level to select combinations exerting the synergistic inhibitory effect of breast cancer cell proliferation. A novel combination of luteolin at 30 μM (LUT30) and indole-3-carbinol 40 μM (I3C40) identified that this combination (L30I40) synergistically constrains ERα+ breast cancer cell (MCF7 and T47D) proliferation only, but not triple-negative breast cancer cells. At the same time, the individual LUT30 and I3C40 do not have this anti-proliferative effect in ERα+ breast cancer cells. Moreover, this combination L30I40 does not have toxicity on endothelial cells compared to the current commercial drugs. Similarly, the combination of LUT and I3C (LUT10 mg + I3C10 mg/kg/day) (IP injection) synergistically suppresses tumor growth in MCF7 cells-derived xenograft mice, but the individual LUT (10 mg/kg/day) and I3C (20 mg/kg/day) do not show an inhibitory effect. This combination synergistically downregulates two major therapeutic targets ERα and cyclin dependent kinase (CDK) 4/6/retinoblastoma (Rb) pathway, both in cultured cells and xenograft tumors. These results provide a solid foundation that a combination of LUT and I3C may be a practical approach to treat ERα+ breast cancer cells after clinical trials.
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Affiliation(s)
- Xiaoyong Wang
- Department of Human Sciences, Tennessee State University, Nashville, TN 37209, USA; (X.W.); (L.Z.); (L.Z.)
- Vanderbilt University Medical Center, Department of Medicine, Division of Rheumatology and Immunology, Nashville, TN 37232, USA
| | - Lijuan Zhang
- Department of Human Sciences, Tennessee State University, Nashville, TN 37209, USA; (X.W.); (L.Z.); (L.Z.)
- Department of Veterinary Medicine, Northwest University for Nationalities, Lanzhou, Gansu 730030, China
| | - Qi Dai
- Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Department of Medicine, Division of Epidemiology, Vanderbilt University School of Medicine, Nashville, TN 37203, USA;
| | - Hongzong Si
- Institute of Computational Science and Engineering, Qingdao University, Qingdao, Shandong 266071, China;
| | - Longyun Zhang
- Department of Human Sciences, Tennessee State University, Nashville, TN 37209, USA; (X.W.); (L.Z.); (L.Z.)
| | - Sakina E. Eltom
- Department of Biochemistry, Cancer Biology, Neuroscience & Pharmacology, Meharry Medical College, Nashville, TN 37208, USA;
| | - Hongwei Si
- Department of Human Sciences, Tennessee State University, Nashville, TN 37209, USA; (X.W.); (L.Z.); (L.Z.)
- Correspondence:
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10
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Sexual hormones regulate the redox status and mitochondrial function in the brain. Pathological implications. Redox Biol 2020; 31:101505. [PMID: 32201220 PMCID: PMC7212485 DOI: 10.1016/j.redox.2020.101505] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 02/11/2020] [Accepted: 03/09/2020] [Indexed: 12/13/2022] Open
Abstract
Compared to other organs, the brain is especially exposed to oxidative stress. In general, brains from young females tend to present lower oxidative damage in comparison to their male counterparts. This has been attributed to higher antioxidant defenses and a better mitochondrial function in females, which has been linked to neuroprotection in this group. However, these differences usually disappear with aging, and the incidence of brain pathologies increases in aged females. Sexual hormones, which suffer a decrease with normal aging, have been proposed as the key factors involved in these gender differences. Here, we provide an overview of redox status and mitochondrial function regulation by sexual hormones and their influence in normal brain aging. Furthermore, we discuss how sexual hormones, as well as phytoestrogens, may play an important role in the development and progression of several brain pathologies, including neurodegenerative diseases such as Alzheimer's and Parkinson's diseases, stroke or brain cancer. Sex hormones are reduced with aging, especially in females, affecting redox balance. Normal aging is associated to a worse redox homeostasis in the brain. Young females show better mitochondrial function and higher antioxidant defenses. Development of brain pathologies is influenced by sex hormones and phytoestrogens.
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11
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Rickert E, Fernandez MO, Choi I, Gorman M, Olefsky JM, Webster NJG. Neuronal SIRT1 Regulates Metabolic and Reproductive Function and the Response to Caloric Restriction. J Endocr Soc 2018; 3:427-445. [PMID: 30746504 PMCID: PMC6364627 DOI: 10.1210/js.2018-00318] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 12/19/2018] [Indexed: 01/06/2023] Open
Abstract
Sirt1 is an NAD-dependent, class III deacetylase that functions as a cellular energy sensor. In addition to its well-characterized effects in peripheral tissues, emerging evidence suggests that neuronal Sirt1 activity plays a role in the central regulation of energy balance and glucose metabolism. In this study, we generated mice expressing an enzymatically inactive form (N-MUT) or wild-type (WT) SIRT1 (N-OX) in mature neurons. N-OX male and female mice had impaired glucose tolerance, and N-MUT female, but not male, mice had improved glucose tolerance compared with that of WT littermates. Furthermore, glucose tolerance was improved in all mice with caloric restriction (CR) but was greater in the N-OX mice, who had better glucose tolerance than their littermates. At the reproductive level, N-OX females had impaired estrous cycles, with increased cycle length and more time in estrus. LH and progesterone surges were absent on the evening of proestrus in the N-OX mice, suggesting a defect in spontaneous ovulation, which was confirmed by the ovarian histology revealing fewer corpora lutea. Despite this defect, the mice were still fertile when mated to WT mice on the day of proestrus, indicating that the mice could respond to normal pheromonal or environmental cues. When subjected to CR, the N-OX mice went into diestrus arrest earlier than their littermates. Together, these results suggested that the overexpression of SIRT1 rendered the mice more sensitive to the metabolic improvements and suppression of reproductive cycles by CR, which was independent of circadian rhythms.
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Affiliation(s)
- Emily Rickert
- VA San Diego Healthcare System, San Diego, California.,Department of Medicine, University of California San Diego, La Jolla, California
| | | | - Irene Choi
- Department of Medicine, University of California San Diego, La Jolla, California
| | - Michael Gorman
- Department of Psychology, University of California San Diego, La Jolla, California
| | - Jerrold M Olefsky
- Department of Medicine, University of California San Diego, La Jolla, California
| | - Nicholas J G Webster
- VA San Diego Healthcare System, San Diego, California.,Department of Medicine, University of California San Diego, La Jolla, California.,Moores Cancer Center, University of California San Diego, La Jolla, California
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12
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Rifaï K, Idrissou M, Penault-Llorca F, Bignon YJ, Bernard-Gallon D. Breaking down the Contradictory Roles of Histone Deacetylase SIRT1 in Human Breast Cancer. Cancers (Basel) 2018; 10:cancers10110409. [PMID: 30380732 PMCID: PMC6266715 DOI: 10.3390/cancers10110409] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 10/23/2018] [Accepted: 10/26/2018] [Indexed: 02/07/2023] Open
Abstract
Breast cancer (BC) is the most common type of cancer in women worldwide; it is a multifactorial genetic disease. Acetylation and deacetylation are major post-translational protein modifications that regulate gene expression and the activity of a myriad of oncoproteins. Aberrant deacetylase activity can promote or suppress tumorigenesis and cancer metastasis in different types of human cancers, including breast cancer. Sirtuin-1 (SIRT1) is a class-III histone deacetylase (HDAC) that deacetylates both histone and non-histone targets. The often-described ‘regulator of regulators’ is deeply implicated in apoptosis, gene regulation, genome maintenance, DNA repair, aging, and cancer development. However, despite the accumulated studies over the past decade, the role of SIRT1 in human breast cancer remains a subject of debate and controversy. The ambiguity surrounding the implications of SIRT1 in breast tumorigenesis stems from the discrepancy between studies, which have shown both tumor-suppressive and promoting functions of SIRT1. Furthermore, studies have shown that SIRT1 deficiency promotes or suppresses tumors in breast cancer, making it an attractive therapeutic target in cancer treatment. This review provides a comprehensive examination of the various implications of SIRT1 in breast cancer development and metastasis. We will also discuss the mechanisms underlying the conflicting roles of SIRT1, as well as its selective modulators, in breast carcinogenesis.
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Affiliation(s)
- Khaldoun Rifaï
- Department of Oncogenetics, Centre Jean Perrin, CBRV, 28 place Henri-Dunant, 63001 Clermont-Ferrand, France.
- INSERM-UMR 1240-Imagerie Moléculaire et Stratégies Théranostiques (IMoST), 58 Rue Montalembert, 63005 Clermont-Ferrand, France.
| | - Mouhamed Idrissou
- Department of Oncogenetics, Centre Jean Perrin, CBRV, 28 place Henri-Dunant, 63001 Clermont-Ferrand, France.
- INSERM-UMR 1240-Imagerie Moléculaire et Stratégies Théranostiques (IMoST), 58 Rue Montalembert, 63005 Clermont-Ferrand, France.
| | - Frédérique Penault-Llorca
- INSERM-UMR 1240-Imagerie Moléculaire et Stratégies Théranostiques (IMoST), 58 Rue Montalembert, 63005 Clermont-Ferrand, France.
- Department of Biopathology, Centre Jean Perrin, 58 Rue Montalembert, 63011 Clermont-Ferrand, France.
| | - Yves-Jean Bignon
- Department of Oncogenetics, Centre Jean Perrin, CBRV, 28 place Henri-Dunant, 63001 Clermont-Ferrand, France.
- INSERM-UMR 1240-Imagerie Moléculaire et Stratégies Théranostiques (IMoST), 58 Rue Montalembert, 63005 Clermont-Ferrand, France.
| | - Dominique Bernard-Gallon
- Department of Oncogenetics, Centre Jean Perrin, CBRV, 28 place Henri-Dunant, 63001 Clermont-Ferrand, France.
- INSERM-UMR 1240-Imagerie Moléculaire et Stratégies Théranostiques (IMoST), 58 Rue Montalembert, 63005 Clermont-Ferrand, France.
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13
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De U, Son JY, Sachan R, Park YJ, Kang D, Yoon K, Lee BM, Kim IS, Moon HR, Kim HS. A New Synthetic Histone Deacetylase Inhibitor, MHY2256, Induces Apoptosis and Autophagy Cell Death in Endometrial Cancer Cells via p53 Acetylation. Int J Mol Sci 2018; 19:ijms19092743. [PMID: 30217020 PMCID: PMC6164480 DOI: 10.3390/ijms19092743] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 09/07/2018] [Accepted: 09/10/2018] [Indexed: 12/28/2022] Open
Abstract
We previously discovered a novel sirtuin (SIRT) inhibitor, MHY2256, that exerts anticancer activity through p53 acetylation in MCF-7 human breast cancer cells. We investigated the anticancer activity of MHY2256 against hormone-related cancer, an endometrial cancer with a poor prognosis. The IC50 values of MHY2256 were shown to be much lower than those of salermide, a well-known SIRT inhibitor. Furthermore, MHY2256 significantly reduced the protein expression and activities of SIRT1, 2, and 3, with similar effects to salermide. Particularly, MHY2256 markedly inhibited tumor growth in a tumor xenograft mouse model of Ishikawa cancer cells. During the experimental period, there was no significant change in the body weight of mice treated with MHY2256. A detailed analysis of the sensitization mechanisms of Ishikawa cells revealed that late apoptosis was largely increased by MHY2256. Additionally, MHY2256 increased G1 arrest and reduced the number of cell cyclic-related proteins, suggesting that apoptosis by MHY2256 was achieved by cellular arrest. Particularly, p21 was greatly increased by MHY225656, suggesting that cell cycle arrest by p21 is a major factor in MHY2256 sensitization in Ishikawa cells. We also detected a significant increase in acetylated p53, a target protein of SIRT1, in Ishikawa cells after MHY2256 treatment. In a mouse xenograft model, MHY2256 significantly reduced tumor growth and weight without apparent side effects. These results suggest that MHY2256 exerts its anticancer activity through p53 acetylation in endometrial cancer and can be used for targeting hormone-related cancers.
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Affiliation(s)
- Umasankar De
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
| | - Ji Yeon Son
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
| | - Richa Sachan
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
| | - Yu Jin Park
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
| | - Dongwan Kang
- College of Pharmacy, Pusan National University, Busandaehak-ro 63 beon-gil 2, Geumjeong-gu, Busan 46241, Korea.
| | - Kyungsil Yoon
- Comparative Biomedicine Research Branch, Division of Translational Science, National Cancer Center, 323 Ilsandong-gu, Goyang-si 10408, Korea.
| | - Byung Mu Lee
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
| | - Hyung Ryong Moon
- College of Pharmacy, Pusan National University, Busandaehak-ro 63 beon-gil 2, Geumjeong-gu, Busan 46241, Korea.
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon 16419, Korea.
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14
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Lin Y, Xiao L, Zhang Y, Li P, Wu Y, Lin Y. MiR-26b-3p regulates osteoblast differentiation via targeting estrogen receptor α. Genomics 2018; 111:1089-1096. [PMID: 29981839 DOI: 10.1016/j.ygeno.2018.07.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 07/03/2018] [Accepted: 07/04/2018] [Indexed: 12/29/2022]
Abstract
BACKGROUND Understanding of the molecular mechanisms of miRNAs involved in osteoblast differentiation is important for the treatment of bone-related diseases. METHODS MC3T3-E1 cells were induced to osteogenic differentiation by culturing with bone morphogenetic protein 2 (BMP2). After transfected with miR-26b-3p mimics or inhibitors, the osteogenic differentiation of MC3T3-E1 cells was detected by ALP and ARS staining. Cell viability was analyzed by MTT. The expressions of miR-26b-3p and osteogenic related markers and signaling were examined by qPCR and western blot. Direct binding of miR-26b-3p and ER-α were determined by dual luciferase assay. RESULTS miR-26b-3p was significantly down-regulated during osteoblast differentiation. Overexpression of miR-26b-3p inhibited osteoblast differentiation, while inhibition of miR-26b-3p enhanced osteoblast differentiation. Further studies demonstrated miR-26b-3p inhibited the expression of estrogen receptor α (ER-α) by directly targeting to the CDS region of ER-α mRNA. Overexpression of ER-α rescued the suppression effects of miR-26b-3p on osteoblast differentiation, while knockdown of ER-α reversed the upregulation of osteoblast differentiation induced by knockdown of miR-26b-3p. CONCLUSION Our study demonstrates that miR-26b-3p suppresses osteoblast differentiation of MC3T3-E1 cells via directly targeting ER-α.
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Affiliation(s)
- Yu Lin
- Department of Orthopaedics, The Second Hospital of Fuzhou Affiliated to Xiamen University, Fuzhou 350007, PR China.
| | - Lili Xiao
- Department of Orthopaedics, The Second Hospital of Fuzhou Affiliated to Xiamen University, Fuzhou 350007, PR China
| | - Yiyuan Zhang
- Department of Orthopaedics, The Second Hospital of Fuzhou Affiliated to Xiamen University, Fuzhou 350007, PR China
| | - Ping Li
- Department of Orthopaedics, The Second Hospital of Fuzhou Affiliated to Xiamen University, Fuzhou 350007, PR China
| | - Yinsheng Wu
- Institute of osteopathy, Fujian Traditional Chinese Medicine University Integrated Traditional Chinese, Western Medicine Research Institute, Fuzhou 350102, PR China
| | - Yanping Lin
- Institute of osteopathy, Fujian Traditional Chinese Medicine University Integrated Traditional Chinese, Western Medicine Research Institute, Fuzhou 350102, PR China.
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15
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Li G, Xia Z, Liu Y, Meng F, Wu X, Fang Y, Zhang C, Liu D. SIRT1 inhibits rheumatoid arthritis fibroblast-like synoviocyte aggressiveness and inflammatory response via suppressing NF-κB pathway. Biosci Rep 2018; 38:BSR20180541. [PMID: 29784872 PMCID: PMC6013706 DOI: 10.1042/bsr20180541] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 05/16/2018] [Accepted: 05/21/2018] [Indexed: 12/29/2022] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease of the joints characterized by synovial hyperplasia and chronic inflammation. Fibroblast-like synoviocytes (FLS) play a central role in RA initiation, progression, and perpetuation. Prior studies showed that sirtuin 1 (SIRT1), a deacetylase participating in a broad range of transcriptional and metabolic regulations, may impact cell proliferation and inflammatory responses. However, the role of SIRT1 in RA-FLS was unclear. Here, we explored the effects of SIRT1 on the aggressiveness and inflammatory responses of cultured RA-FLS. SIRT1 expression was significantly lower in synovial tissues and FLS from RA patients than from healthy controls. Overexpression of SIRT1 significantly inhibited RA-FLS proliferation, migration, and invasion. SIRT1 overexpression also significantly increased RA-FLS apoptosis and caspase-3 and -8 activity. Focusing on inflammatory phenotypes, we found SIRT1 significantly reduced RA-FLS secretion of TNF-α, IL-6, IL-8, and IL-1β. Mechanistic studies further revealed SIRT1 suppressed NF-κB pathway by reducing p65 protein expression, phosphorylation, and acetylation in RA-FLS. Our results suggest SIRT1 is a key regulator in RA pathogenesis by suppressing aggressive phenotypes and inflammatory response of FLS. Enhancing SIRT1 expression or function in FLS could be therapeutic beneficial for RA by inhibiting synovial hyperplasia and inflammation.
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Affiliation(s)
- Guoqing Li
- Department of Rheumatology, Northern Jiangsu People's Hospital affiliated to Yangzhou University, Yangzhou City, Jiangsu Province 225000, P.R. China
| | - Zhongbing Xia
- Department of Rheumatology, Northern Jiangsu People's Hospital affiliated to Yangzhou University, Yangzhou City, Jiangsu Province 225000, P.R. China
| | - Ying Liu
- Department of Rheumatology, Northern Jiangsu People's Hospital affiliated to Yangzhou University, Yangzhou City, Jiangsu Province 225000, P.R. China
- Clinical Medical College, Dalian Medical University, Dalian City, Liaoning Province 116044, P.R. China
| | - Fanru Meng
- Department of Rheumatology, Northern Jiangsu People's Hospital affiliated to Yangzhou University, Yangzhou City, Jiangsu Province 225000, P.R. China
- Clinical Medical College, Dalian Medical University, Dalian City, Liaoning Province 116044, P.R. China
| | - Xia Wu
- Department of Rheumatology, Northern Jiangsu People's Hospital affiliated to Yangzhou University, Yangzhou City, Jiangsu Province 225000, P.R. China
- Clinical Medical College, Dalian Medical University, Dalian City, Liaoning Province 116044, P.R. China
| | - Yuxuan Fang
- Department of Rheumatology, Northern Jiangsu People's Hospital affiliated to Yangzhou University, Yangzhou City, Jiangsu Province 225000, P.R. China
- Clinical Medical College, Dalian Medical University, Dalian City, Liaoning Province 116044, P.R. China
| | - Chunwang Zhang
- Department of Rheumatology, Northern Jiangsu People's Hospital affiliated to Yangzhou University, Yangzhou City, Jiangsu Province 225000, P.R. China
- Clinical Medical College, Dalian Medical University, Dalian City, Liaoning Province 116044, P.R. China
| | - Dan Liu
- Department of Pathology, Northern Jiangsu People's Hospital affiliated to Yangzhou University, Yangzhou City, Jiangsu Province 225000, P.R. China
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16
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Xu Z, Yang Y, Li B, Li Y, Xia K, Yang Y, Li X, Wang M, Li S, Wu H. Checkpoint suppressor 1 suppresses transcriptional activity of ERα and breast cancer cell proliferation via deacetylase SIRT1. Cell Death Dis 2018; 9:559. [PMID: 29752474 PMCID: PMC5948204 DOI: 10.1038/s41419-018-0629-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/13/2018] [Accepted: 04/18/2018] [Indexed: 02/08/2023]
Abstract
Breast cancer is a highly heterogeneous carcinoma in women worldwide, but the underlying mechanisms that account for breast cancer initiation and development have not been fully established. Mounting evidence indicates that Checkpoint suppressor 1 (CHES1) is tightly associated with tumorigenesis and prognosis in many types of cancer. However, the definitive function of CHES1 in breast cancer remains to be explored. Here we showed that CHES1 had a physical interaction with estrogen receptor-α (ERα) and repressed the transactivation of ERα in breast cancer cells. Mechanistically, the interaction between CHES1 and ERα enhanced the recruitment of nicotinamide adenine dinucleotide (NAD+) deacetylase Sirtuin 1 (SIRT1), and it further induced SIRT1-mediated ERα deacetylation and repression on the promoter-binding enrichment of ERα. In addition, we also found that the expression of CHES1 was repressed by estrogen-ERα signaling and the expression level of CHES1 was significantly downregulated in ERα-positive breast cancer. The detailed mechanism was that ERα may directly bind to CHES1 potential promoter via recognizing the conserved estrogen response element (ERE) motif in response to estrogen stimulation. Functionally, CHES1 inhibited ERα-mediated proliferation and tumorigenesis of breast cancer cells in vivo and in vitro. Totally, these results identified a negative cross-regulatory loop between ERα and CHES1 that was required for growth of breast cancer cells, it might uncover novel insight into molecular mechanism of CHES1 involved in breast cancer and provide new avenues for molecular-targeted therapy in hormone-regulated breast cancer.
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Affiliation(s)
- Zhaowei Xu
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Yangyang Yang
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Bowen Li
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Yanan Li
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Kangkai Xia
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Yuxi Yang
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Xiahui Li
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Miao Wang
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Shujing Li
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Huijian Wu
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China.
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17
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Jin X, Wei Y, Xu F, Zhao M, Dai K, Shen R, Yang S, Zhang N. SIRT1 promotes formation of breast cancer through modulating Akt activity. J Cancer 2018; 9:2012-2023. [PMID: 29896286 PMCID: PMC5995935 DOI: 10.7150/jca.24275] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Accepted: 03/15/2018] [Indexed: 12/29/2022] Open
Abstract
The silent information regulation factor 1 (sirtuin Type 1, SIRT1), as a kind of NAD+ dependent class III histone deacetylation enzyme, has been found to be involved in tumor proliferation, invasion, and metastasis. The roles of SIRTl in breast cancer is multifaceted depending on its substrate from upstream or downstream signaling pathway. In this study, we sought to make clear the regulating effects of SIRT1 in breast cancer cells, and to explore the underlying mechanisms through which SIRT1 regulates breast cancer. First, our results showed that SIRT1 was significantly up-regulated in breast cancer tissues and cells, which correlated with histological grade, tumor size, as well as lymph node metastasis. Then we established SIRT1-overexpressed and SIRT1- knockdown breast cancer cell lines to investigate the functions of SIRT1 in regulating colony formation, cell proliferation, cell cycle, cell apoptosis and migration. We found that overexpression of SIRT1 significantly promoted breast cancer growth both in vitro and in vivo, whereas knockdown of SIRT1 inhibited these phenotypes. Furthermore, SIRT1 was found to interact with Akt directly, consequently promoting the activity of Akt in breast cancer cells in vitro and positively correlating with expression of Akt, P-Akt, in breast cancer tissues in vivo. Down regulation the activity of Akt partially weakened the proliferative effect mediated by SIRT1. Taken together, our results demonstrated SIRT1's tumor promotion function and potential mechanisms in breast cancer, thus providing valuable therapeutic targets for breast cancer.
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Affiliation(s)
- Xiaoxia Jin
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Department of Pathology, Nantong Tumor Hospital, Nantong, Jiangsu, China
| | - Yingze Wei
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Department of Pathology, Nantong Tumor Hospital, Nantong, Jiangsu, China
| | - Feng Xu
- Department of Thoracic Surgery, Nantong Tumor Hospital, Nantong, Jiangsu, China
| | - Min Zhao
- Department of Pathology, Nantong Tumor Hospital, Nantong, Jiangsu, China
| | - Kui Dai
- Department of Pathology, Nantong Tumor Hospital, Nantong, Jiangsu, China
| | - Rong Shen
- Department of Pathology, Nantong Tumor Hospital, Nantong, Jiangsu, China
| | - Shuyun Yang
- Department of Pathology, Nantong Tumor Hospital, Nantong, Jiangsu, China
| | - Nong Zhang
- Department of Pathology, School of Basic Medical Sciences, Fudan University, Shanghai, China
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18
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Pinterić M, Podgorski II, Sobočanec S, Popović Hadžija M, Paradžik M, Dekanić A, Marinović M, Halasz M, Belužić R, Davidović G, Ambriović Ristov A, Balog T. De novo expression of transfected sirtuin 3 enhances susceptibility of human MCF-7 breast cancer cells to hyperoxia treatment. Free Radic Res 2018; 52:672-684. [PMID: 29683756 DOI: 10.1080/10715762.2018.1462495] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Sirtuin 3 (Sirt3) has a promising role in cancer tumourigenesis and treatment, but there have been controversies about its role as oncogene or tumour suppressor in different types of cancer. Changes in its expression are associated with the excessive production of reactive oxygen species (ROS), thus contributing to mitochondrial dysfunction and age-related pathologies. Hyperoxic treatment (i.e. generator of ROS) was shown to support some tumourigenic properties, but finally suppresses growth of certain mammary carcinoma cells. Due to strikingly reduced Sirt3 level in many breast cancer cell lines, we aimed to clarify the effect of de novo Sirt3 expression upon hyperoxic treatment in the human MCF-7 breast cancer cells. De novo expression of Sirt3 decreased metabolic activity and cellular growth of MCF-7 cells, reduced expression of proangiogenic and epithelial mesenchymal transition genes, induced metabolic switch from glycolysis to oxidative phosphorylation, and decreased abundance of senescent cells. These effects were enhanced upon hyperoxic treatment: induction of DNA damage and upregulation of p53, with an increase of ROS levels followed by mitochondrial and antioxidant dysfunction, resulted in additional reduction of metabolic activity and inhibition of cellular growth and survival. The mitigation of tumorigenic properties and enhancement of the susceptibility of the MCF-7 breast cancer cells to the hyperoxic treatment upon de novo Sirt3 expression indicates that these factors, individually and in combination, should be further explored in vitro and particularly in vivo, as an adjuvant tumour therapy in breast cancer malignancies.
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Affiliation(s)
- Marija Pinterić
- a Division of Molecular Medicine , Ruđer Bošković Institute , Zagreb , Croatia
| | - Iva I Podgorski
- a Division of Molecular Medicine , Ruđer Bošković Institute , Zagreb , Croatia
| | - Sandra Sobočanec
- a Division of Molecular Medicine , Ruđer Bošković Institute , Zagreb , Croatia
| | | | - Mladen Paradžik
- a Division of Molecular Medicine , Ruđer Bošković Institute , Zagreb , Croatia
| | - Ana Dekanić
- a Division of Molecular Medicine , Ruđer Bošković Institute , Zagreb , Croatia
| | - Maja Marinović
- a Division of Molecular Medicine , Ruđer Bošković Institute , Zagreb , Croatia
| | - Mirna Halasz
- a Division of Molecular Medicine , Ruđer Bošković Institute , Zagreb , Croatia
| | - Robert Belužić
- a Division of Molecular Medicine , Ruđer Bošković Institute , Zagreb , Croatia
| | - Grazia Davidović
- a Division of Molecular Medicine , Ruđer Bošković Institute , Zagreb , Croatia
| | | | - Tihomir Balog
- a Division of Molecular Medicine , Ruđer Bošković Institute , Zagreb , Croatia
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19
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Tan J, Liu Y, Maimaiti Y, Wang C, Yan Y, Zhou J, Ruan S, Huang T. Combination of SIRT1 and Src overexpression suggests poor prognosis in luminal breast cancer. Onco Targets Ther 2018; 11:2051-2061. [PMID: 29695913 PMCID: PMC5905521 DOI: 10.2147/ott.s162503] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Objectives 1) Analyze the correlation of SIRT1 and Src with human breast cancer (BC) prognosis; 2) explore the roles of SIRT1 and Src in BC cell proliferation, tumor invasion, and metastasis; and 3) analyze the correlation and interaction between SIRT1 and Src. Materials and methods 1) Tissue microarray was used to analyze the expression of SIRT1 and Src in human BC tissues and the correlation between protein expression and cancer prognosis; 2) CCK8 assay was used to determine the influence of SIRT1 and Src inhibitors on BC cell proliferation; 3) Transwell migration assay and wound healing assay were used to determine the effect of SIRT1 and Src inhibitors on BC cell migration and invasion; and 4) Western blotting was used to analyze the correlation and interaction between SIRT1 and Src. Results 1) Combination of SIRT1 and/or Src positivity is a prognosis factor in BC, especially in luminal type; 2) MCF-7 cell proliferation is suppressed by SIRT1 inhibitor Ex527, and cell migration and invasion were inhibited by Src inhibitor bosutinib; 3) combined with Ex527, bosutinib has a significantly increased effect on MCF-7 cell migration suppression; and 4) there is a positive association between SIRT1 and Src both in BC tissues and in MCF-7 cells. Conclusion 1) SIRT1 and Src overexpression are both correlated with poor prognosis in human BC; 2) SIRT1 + Src (SIRT1 and/or Src positivity) is a fine prognosis model for luminal-type BC; 3) SIRT1 is a copromotor of Src in BC migration and invasion, but not in cell proliferation; and 4) our results suggest a potential interaction or a common regulation pathway between SIRT1 and Src expression and activity.
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Affiliation(s)
- Jie Tan
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuyin Liu
- Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yusufu Maimaiti
- Department of General Surgery, Research Institute of Minimally Invasive, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, China
| | - Changwen Wang
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Yan
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Zhou
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shengnan Ruan
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tao Huang
- Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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20
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Semina SE, Scherbakov AM, Kovalev SV, Shevchenko VE, Krasil'nikov MA. Horizontal Transfer of Tamoxifen Resistance in MCF-7 Cell Derivates: Proteome Study. Cancer Invest 2017; 35:506-518. [DOI: 10.1080/07357907.2017.1368081] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- S. E. Semina
- Laboratory of Molecular Endocrinology, N.N. Blokhin Cancer Research Centre, Moscow, Russia
| | - A. M. Scherbakov
- Laboratory of Oncoproteomics, N.N. Blokhin Cancer Research Centre, Moscow, Russia
| | - S. V. Kovalev
- Laboratory of Oncoproteomics, N.N. Blokhin Cancer Research Centre, Moscow, Russia
| | - V. E. Shevchenko
- Laboratory of Oncoproteomics, N.N. Blokhin Cancer Research Centre, Moscow, Russia
| | - M. A. Krasil'nikov
- Laboratory of Molecular Endocrinology, N.N. Blokhin Cancer Research Centre, Moscow, Russia
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21
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Xu J, Shumate C, Qin Y, Reddy V, Burnam Y, Lopez V, Okoli J, P Reddy ES, Rao VN. A novel Ubc9 -dependent pathway regulates SIRT1- ER-α Axis and BRCA1-associated TNBC lung metastasis. ACTA ACUST UNITED AC 2017; 4. [PMID: 31341634 DOI: 10.15761/imm.1000298] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Triple negative breast cancer (TNBC) is a heterogeneous disease and has a higher rate of recurrence and distant metastasis. African-American (AA) women have a higher frequency of BRCA1 mutations and TNBC compared to other populations. Basal-like tumors have a higher rate of brain, lung and distant nodal metastasis more than other TNBC subtypes, contributing to higher mortality rate. Our previous work suggested Ubc9, a SUMO E2-conjugating enzyme to induce proliferation and migration of BRCA1-incompetent TNBC cells and TNBC cell lines established from the pleural effusion metastasis of a woman with TNBC. To understand the downstream signaling axis involved in distant metastasis we have used clinically relevant BRCA1 mutant and lung metastatic TNBC cell lines and our results show deregulated expression of caveolin-1, VEGF and SIRT1 in these cells compared to normal mammary epithelial cells by immunofluorescence analysis. We observed SIRT1 to be induced by wild type BRCA1a and BRCA1a I26A mutant unlike the disease associated Ubc9 binding mutants in TNBC cells. Knock down of Ubc9 induced SIRT1 expression in TNBC and ER-α expression in breast cancer cells. This is the first report demonstrating a role for Ubc9 in repressing both SIRT1 and ER-α expression in BRCA1 associated TNBC cells. It also suggests that the BARD-dependent E3 Ubiquitin ligase and HR (homologous recombination) activity of BRCA1 may not be required for inducing SIRT1 expression. Our results suggest for the first time that in BRCA1 mutant TNBC Ubc9-mediated induction of VEGF, inhibition of caveolin-1, SIRT1 and ER-α expression as a novel molecular mechanism underlying TNBC EMT (epithelial mesenchymal transition) leading to lung metastasis with pleural effusion. Drugs that target Ubc9 to both induce SIRT1 and ER-α or using SIRT1 agonists in combination with chemotherapy can be used as a promising targeted therapeutic approach for treating basal-like metastatic BRCA1-linked TNBC thus reducing the mortality in patients with TNBC.
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Affiliation(s)
- Jingyao Xu
- Cancer Biology Program, Department of OB/GYN, Morehouse School of Medicine, Georgia Cancer Center for Excellence, Grady Health System,USA
| | - Collin Shumate
- Cancer Biology Program, Department of OB/GYN, Morehouse School of Medicine, Georgia Cancer Center for Excellence, Grady Health System,USA
| | - Yulong Qin
- Cancer Biology Program, Department of OB/GYN, Morehouse School of Medicine, Georgia Cancer Center for Excellence, Grady Health System,USA
| | - Vaishali Reddy
- Cancer Biology Program, Department of OB/GYN, Morehouse School of Medicine, Georgia Cancer Center for Excellence, Grady Health System,USA
| | - Yonte Burnam
- Cancer Biology Program, Department of OB/GYN, Morehouse School of Medicine, Georgia Cancer Center for Excellence, Grady Health System,USA
| | - Victoria Lopez
- Department of Internal Medicine, Morehouse School of Medicine, Georgia Cancer Center for Excellence, Grady Health System, Atlanta, GA 30303, USA
| | - Joel Okoli
- Department of Surgery, Morehouse School of Medicine, Georgia Cancer Center for Excellence, Grady Health System, Atlanta, GA 30303, USA
| | - E Shyam P Reddy
- Cancer Biology Program, Department of OB/GYN, Morehouse School of Medicine, Georgia Cancer Center for Excellence, Grady Health System,USA
| | - Veena N Rao
- Cancer Biology Program, Department of OB/GYN, Morehouse School of Medicine, Georgia Cancer Center for Excellence, Grady Health System,USA
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22
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Bartosch C, Lopes JM, Jerónimo C. Epigenetics in endometrial carcinogenesis - part 2: histone modifications, chromatin remodeling and noncoding RNAs. Epigenomics 2017; 9:873-892. [PMID: 28523964 DOI: 10.2217/epi-2016-0167] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Carcinogenesis is a multistep multifactorial process that involves the accumulation of genetic and epigenetic alterations. In the past two decades, there has been an exponential growth of knowledge establishing the importance of epigenetic changes in cancer. Our work focused on reviewing the main role of epigenetics in the pathogenesis of endometrial carcinoma, highlighting the reported results concerning each epigenetic mechanistic layer. In a previous review, we assessed DNA methylation alterations. The present review examines the contribution of histone modifications, chromatin remodeling and noncoding RNA alterations for endometrial carcinogenesis.
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Affiliation(s)
- Carla Bartosch
- Department of Pathology, Portuguese Oncology Institute of Porto (IPO-Porto), Porto, Portugal.,Cancer Biology & Epigenetics Group, Research Center (CI-IPOP), Portuguese Oncology Institute of Porto, Porto, Portugal.,Department of Pathology & Oncology, Medical Faculty, University of Porto, Porto, Portugal.,Porto Comprehensive Cancer Center (P.ccc), Porto, Portugal
| | - José Manuel Lopes
- Department of Pathology & Oncology, Medical Faculty, University of Porto, Porto, Portugal.,Department of Pathology, Centro Hospitalar São João (CHSJ), Porto, Portugal.,IPATIMUP (Institute of Molecular Pathology & Immunology, University of Porto); I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Carmen Jerónimo
- Cancer Biology & Epigenetics Group, Research Center (CI-IPOP), Portuguese Oncology Institute of Porto, Porto, Portugal.,Porto Comprehensive Cancer Center (P.ccc), Porto, Portugal.,Department of Pathology & Molecular Immunology, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
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23
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Zhou X, Zheng Z, Xu C, Wang J, Min M, Zhao Y, Wang X, Gong Y, Yin J, Guo M, Guo D, Zheng J, Zhang B, Yin X. Disturbance of Mammary UDP-Glucuronosyltransferase Represses Estrogen Metabolism and Exacerbates Experimental Breast Cancer. J Pharm Sci 2017; 106:2152-2162. [PMID: 28479355 DOI: 10.1016/j.xphs.2017.04.073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 04/20/2017] [Accepted: 04/26/2017] [Indexed: 02/01/2023]
Abstract
The progression of breast cancer is closely related to the levels of estrogens within the body. UDP-glucuronosyltransferase (UGT) is an important class of phase II metabolizing enzymes, playing a pivotal role in detoxifying steroid hormone. In the present study, we aim at uncovering the potential dysregulation pattern of UGT and its role in estrogen metabolism and in the pathogenesis of breast cancer. Female Sprague-Dawley rats were treated with 100 mg/kg dimethylbenz(a)anthracene (DMBA) to induce breast cancer. Our results showed that the expression and activity of UGT in mammary tissues were downregulated significantly in DMBA rats. Consistent with this, levels of estradiol, 4-hydroxylated estradiol, and 2-hydroxylated estradiol were increased in both mammary tissues and serum, supporting a notable accumulation of toxic estrogen species in the target tissue of breast cancer. In addition, we also observed the decreased cell migration, cell proliferation, and DNA damage in UGT-transfected MCF-7 cells, suggesting a protective role of UGT against estrogen-induced mammary carcinogenesis. Taken together, these results indicated that accumulation of estrogens induced by UGT deficiency is a critical factor to induce the development of breast cancer. UGT contributes to estrogen elimination, and its glucuronidation capacity influences the estrogen signaling pathway and the pathogenesis of breast cancer.
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Affiliation(s)
- Xueyan Zhou
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Ziqiang Zheng
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Chang Xu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Juan Wang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Mengjun Min
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Yun Zhao
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Xi Wang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Yinhan Gong
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Jiale Yin
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Meng Guo
- Department of Thyroid and Breast Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Dong Guo
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Junnian Zheng
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Bei Zhang
- Department of Obstetrics and Gynecology, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, People's Republic of China
| | - Xiaoxing Yin
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, People's Republic of China.
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24
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Wu SP, DeMayo FJ. Progesterone Receptor Signaling in Uterine Myometrial Physiology and Preterm Birth. Curr Top Dev Biol 2017; 125:171-190. [PMID: 28527571 DOI: 10.1016/bs.ctdb.2017.03.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Myometrium holds the structural integrity for the uterus and generates force for parturition with its primary component, the smooth muscle cells. The progesterone receptor mediates progesterone-dependent signaling and connects to a network of pathways for regulation of contractility and inflammatory responses in myometrium. Dysfunctional progesterone signaling has been linked to pregnancy complications including preterm birth. In the present review, we summarize recent findings on modifiers and effectors of the progesterone receptor signaling. Discussions include novel conceptual discoveries and new development in legacy pathways such as the signal transducers NF-κB, ZEB, microRNA, and the unfolded protein response pathways. We also discuss the impact of progesterone receptor isoform composition and ligand accessibility in modification of the progesterone receptor genomic actions.
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Affiliation(s)
- San-Pin Wu
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institute of Health, Research Triangle Park, NC, United States
| | - Francesco J DeMayo
- Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Sciences, National Institute of Health, Research Triangle Park, NC, United States.
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25
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Bartosch C, Monteiro-Reis S, Almeida-Rios D, Vieira R, Castro A, Moutinho M, Rodrigues M, Graça I, Lopes JM, Jerónimo C. Assessing sirtuin expression in endometrial carcinoma and non-neoplastic endometrium. Oncotarget 2016; 7:1144-54. [PMID: 26701732 PMCID: PMC4811449 DOI: 10.18632/oncotarget.6691] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Accepted: 12/08/2015] [Indexed: 12/17/2022] Open
Abstract
Sirtuins participate in hormone imbalance, metabolism and aging, which are important processes for endometrial cancer (EC) development. Sirtuins mRNA expression (SIRT1 to 7) was determined in 76 ECs (63 Type I, 12 Type II and one mixed EC), and 30 non-neoplastic endometria (NNE) by quantitative real-time PCR. SIRT1 and SIRT7 protein expression was evaluated by immunohistochemistry using Allred score. Compared to NNE, ECs showed SIRT7 (p < 0.001) mRNA overexpression, whereas SIRT1 (p < 0.001), SIRT2 (p < 0.001), SIRT4 (p < 0.001) and SIRT5 (p < 0.001) were underexpressed. No significant differences were observed for SIRT3 and SIRT6. Type II ECs displayed lower SIRT1 (p = 0.032) and SIRT3 (p = 0.016) transcript levels than Type I ECs. Concerning protein expression, SIRT1 immunostaining median score was higher in ECs compared to NNE epithelium (EC = 5 vs. NNE = 2, p < 0.001), while SIRT7 was lower in ECs (EC = 6 vs. NNE = 7, p < 0.001). No significant associations were found between SIRT1/7 immunoexpression and histological subtype, grade, lymphovascular invasion or stage. Our data shows that sirtuins are deregulated in EC. The diversity of expression patterns observed suggests that sirtuins may have distinctive roles in endometrial cancer similarly to what has been described in other cancer models.
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Affiliation(s)
- Carla Bartosch
- Department of Pathology, Portuguese Oncology Institute-Porto (IPO-Porto), Porto, Portugal.,Cancer Epigenetics & Biology Group, Research Center, Portuguese Oncology Institute-Porto, Porto, Portugal.,Department of Pathology and Oncology, Medical Faculty, University of Porto, Porto, Portugal
| | - Sara Monteiro-Reis
- Department of Pathology, Portuguese Oncology Institute-Porto (IPO-Porto), Porto, Portugal.,Cancer Epigenetics & Biology Group, Research Center, Portuguese Oncology Institute-Porto, Porto, Portugal
| | - Diogo Almeida-Rios
- Department of Pathology, Portuguese Oncology Institute-Porto (IPO-Porto), Porto, Portugal.,Cancer Epigenetics & Biology Group, Research Center, Portuguese Oncology Institute-Porto, Porto, Portugal
| | - Renata Vieira
- Department of Pathology, Portuguese Oncology Institute-Porto (IPO-Porto), Porto, Portugal
| | - Armando Castro
- Department of Pathology, Centro Hospitalar São João (CHSJ), Porto, Portugal
| | - Manuel Moutinho
- Department of Pathology, Centro Hospitalar São João (CHSJ), Porto, Portugal
| | - Marta Rodrigues
- Department of Pathology, Centro Hospitalar São João (CHSJ), Porto, Portugal
| | - Inês Graça
- Cancer Epigenetics & Biology Group, Research Center, Portuguese Oncology Institute-Porto, Porto, Portugal
| | - José Manuel Lopes
- Department of Pathology and Oncology, Medical Faculty, University of Porto, Porto, Portugal.,Department of Pathology, Centro Hospitalar São João (CHSJ), Porto, Portugal.,IPATIMUP (Institute of Molecular Pathology and Immunology, University of Porto), Porto, Portugal
| | - Carmen Jerónimo
- Cancer Epigenetics & Biology Group, Research Center, Portuguese Oncology Institute-Porto, Porto, Portugal.,Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
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26
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Wang X, Yang B, Ma B. The UCA1/miR-204/Sirt1 axis modulates docetaxel sensitivity of prostate cancer cells. Cancer Chemother Pharmacol 2016; 78:1025-1031. [DOI: 10.1007/s00280-016-3158-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 09/15/2016] [Indexed: 01/07/2023]
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27
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Li K, Ying M, Feng D, Du J, Chen S, Dan B, Wang C, Wang Y. Brachyury promotes tamoxifen resistance in breast cancer by targeting SIRT1. Biomed Pharmacother 2016; 84:28-33. [PMID: 27621036 DOI: 10.1016/j.biopha.2016.09.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 08/21/2016] [Accepted: 09/06/2016] [Indexed: 12/01/2022] Open
Abstract
Tamoxifen is effective for treating estrogen receptor-alpha (ERα)-positive breast cancers. However, few molecular mediators of tamoxifen resistance have been elucidated. In the present study, we determine the underlying roles of Brachyury in tamoxifen resistance. Loss- and gain-of-function assay are utilized to confirm the oncogenic roles of Brachyury in breast cancer. Compared with the normal MCF10A cells, Brachyury is commonly overexpressed in breast cancer cell lines. Knockdown of Brachyury inhibits tamoxifen resistance, whereas overexpression of Brachyury enhances tamoxifen resistance as demonstrated increased cell viability and reduced cell apoptosis. Mechanistically, we demonstrate for the first time that Brachyury mediates tamoxifen resistance by regulating Sirtuin-1 (SIRT1). Collectively, our data, as a proof of principle, indicate that Brachyury is a candidate marker for predicting the clinical efficacy of tamoxifen and targeting SIRT1 could overcome resistance to tamoxifen in breast cancer cells.
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Affiliation(s)
- Kaichun Li
- Department of Oncology, Changhai Hospital Affiliated to The Second Military Medical University, Shanghai 200433, PR China
| | - Mingzhen Ying
- Department of Oncology, Changhai Hospital Affiliated to The Second Military Medical University, Shanghai 200433, PR China
| | - Dan Feng
- Department of Oncology, Changhai Hospital Affiliated to The Second Military Medical University, Shanghai 200433, PR China
| | - Jie Du
- Department of Oncology, Tianyou Hospital Affiliated to Tongji University, Shanghai 200331, PR China
| | - Shiyu Chen
- Department of Oncology, Tianyou Hospital Affiliated to Tongji University, Shanghai 200331, PR China
| | - Bing Dan
- Department of Oncology, Tianyou Hospital Affiliated to Tongji University, Shanghai 200331, PR China
| | - Cuihua Wang
- Department of Oncology, Tianyou Hospital Affiliated to Tongji University, Shanghai 200331, PR China
| | - Yajie Wang
- Department of Oncology, Changhai Hospital Affiliated to The Second Military Medical University, Shanghai 200433, PR China.
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28
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Hayes L, Weening A, Morey LM. Differential Effects of Estradiol and Bisphenol A on SET8 and SIRT1 Expression in Ovarian Cancer Cells. Dose Response 2016; 14:1559325816640682. [PMID: 27114721 PMCID: PMC4831029 DOI: 10.1177/1559325816640682] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Exposure to estrogenic compounds has been shown to epigenetically reprogram the female reproductive tract and may contribute to ovarian cancer. The goal of this study was to compare the effect of estradiol or bisphenol A (BPA) on the expression of histone-modifying enzymes (HMEs) in ovarian cancer cells. Using 2 human ovarian cancer cell lines, we examined the expression of SET8, a histone methyltransferase, and SIRT1, a histone deacetylase, after exposure to estrogen or BPA. These experiments were carried out in complete media (fetal bovine serum) that contain natural hormones to understand the impact of additional exposure to estrogen or BPA on HME expression. We found differential expression of the HMEs in the different models examined and between the different compounds. Further, we determined that the changes in gene expression occurred via estrogen receptor signaling using the estrogen receptor antagonist, ICI 182,780 (fulvestrant).
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Affiliation(s)
- Laura Hayes
- Lake Erie College of Osteopathic Medicine, Erie, PA, USA
| | - Allison Weening
- Vermont Department of Health Laboratory, Colchester, VT, USA
| | - Lisa M. Morey
- Department of Biology, Canisius College, Buffalo, NY, USA
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29
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Cui Y, Li J, Zheng F, Ouyang Y, Chen X, Zhang L, Chen Y, Wang L, Mu S, Zhang H. Effect of SIRT1 Gene on Epithelial-Mesenchymal Transition of Human Prostate Cancer PC-3 Cells. Med Sci Monit 2016; 22:380-6. [PMID: 26847404 PMCID: PMC4747318 DOI: 10.12659/msm.895312] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Background The epithelial-mesenchymal transition (EMT) has been shown to be involved in the process of invasion and metastasis of prostate cancer. SIRT1 is the mammalian homologue of the silent information regulator 2 (Sir2) gene, and is abnormally expressed in prostate cancer cells. Therefore, it is hypothesized that SIRT1 mediates the invasion/metastatic ability of prostate cancer via EMT regulation. This study thus investigated the effect of SIRT1 gene on the invasion and migration of prostate cancer cell line PC-3 via the small interference RNA (siRNA) against SIRT1. Material/Methods SiRNA construct was transfected into PC-3 cells, which were tested for the cell migration and invasion ability by scratch assay and Transwell migration assay, respectively. Expression levels of vimentin, E-cadherin, and N-cadherin were further quantified by Western blotting and RT-PCR. Results Both mRNA and protein levels of SIRT1 were depressed after siRNA transfection, along with weakened migration and invasion ability of PC-3 cells. Elevated E-cadherin and suppressed N-cadherin and vimentin were observed in those transfected cells. Conclusions The silencing of SIRT1 gene in PC-3 cells can suppress the movement, migration, and invasion functions of prostate cancer cells, possibly via the down-regulation of mesenchymal markers vimentin and N-cadherin accompanied with up-regulation of epithelial marker N-cadherin, thus reversing the EMT process.
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Affiliation(s)
- Ying Cui
- Department of Blood Transfusion, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shanxi, China (mainland)
| | - Jiang Li
- Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shanxi, China (mainland)
| | - Fei Zheng
- Department of Hepatobiliary Surgery, General Hospital of Shenyang Military Command, Shenyang, Liaoning, China (mainland)
| | - Yongri Ouyang
- Department of Medical Laboratory and Research Center, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shanxi, China (mainland)
| | - Xi Chen
- Department of Medical Laboratory and Research Center, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shanxi, China (mainland)
| | - Lei Zhang
- Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shanxi, China (mainland)
| | - Yang Chen
- Department of Blood Transfusion, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shanxi, China (mainland)
| | - Lin Wang
- Department of Blood Transfusion, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shanxi, China (mainland)
| | - Shijie Mu
- Department of Blood Transfusion, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shanxi, China (mainland)
| | - Huizhong Zhang
- Department of Medical Laboratory and Research Center, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shanxi, China (mainland)
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30
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Lee SH, Oh KN, Han Y, Choi YH, Lee KY. Estrogen Receptor α Regulates Dlx3-Mediated Osteoblast Differentiation. Mol Cells 2016; 39:156-62. [PMID: 26674964 PMCID: PMC4757804 DOI: 10.14348/molcells.2016.2291] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 10/31/2015] [Accepted: 11/03/2015] [Indexed: 01/01/2023] Open
Abstract
Estrogen receptor α (ER-α), which is involved in bone metabolism and breast cancer, has been shown to have transcriptional targets. Dlx3 is essential for the skeletal development and plays an important role in osteoblast differentiation. Various osteogenic stimulators and transcription factors can induce the protein expression of Dlx3. However, the regulatory function of ER-α in the Dlx3 mediated osteogenic process remains unknown. Therefore, we investigated the regulation of Dlx3 and found that ER-α is a positive regulator of Dlx3 transcription in BMP2-induced osteoblast differentiation. We also found that ER-α interacts with Dlx3 and increases its transcriptional activity and DNA binding affinity. Furthermore, we demonstrated that the regulation of Dlx3 activity by ER-α is independent of the ligand (estradiol) binding domain. These results indicate that Dlx3 is a novel target of ER-α, and that ER-α regulates the osteoblast differentiation through modulation of Dlx3 expression and/or interaction with Dlx3.
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Affiliation(s)
- Sung Ho Lee
- College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 500-757,
Korea
| | - Kyo-Nyeo Oh
- College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 500-757,
Korea
| | - Younho Han
- College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 500-757,
Korea
| | - You Hee Choi
- College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 500-757,
Korea
| | - Kwang-Youl Lee
- College of Pharmacy and Research Institute of Drug Development, Chonnam National University, Gwangju 500-757,
Korea
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31
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Jin MS, Hyun CL, Park IA, Kim JY, Chung YR, Im SA, Lee KH, Moon HG, Ryu HS. SIRT1 induces tumor invasion by targeting epithelial mesenchymal transition-related pathway and is a prognostic marker in triple negative breast cancer. Tumour Biol 2015; 37:4743-53. [PMID: 26515337 DOI: 10.1007/s13277-015-4231-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 10/12/2015] [Indexed: 12/17/2022] Open
Abstract
Absence of therapeutic targets poses a critical hurdle in improving prognosis for patients with triple negative breast cancer (TNBC). We evaluated interaction between SIRT1 and epithelial mesenchymal transition (EMT)-associated proteins as well as the role of combined protein expression as a predictor of lymph node metastasis and clinical outcome in TNBC through in vivo and vitro studies. Three hundred nineteen patients diagnosed with TNBC were chosen, immunohistochemical staining for SIRT1 and EMT-related markers' expression was performed on tissue microarrays, and in vitro experiments with each of the three human TNBC cell lines were carried out. The cohort was reclassified according to the use of adjuvant chemotherapy, tumor size, and AJCC stage to analyze the prognostic role of SIRT1 and EMT-related proteins' expression considering different therapeutic modalities and AJCC stages. Combination of four proteins including SIRT1 and three EMT-related proteins was revealed to be a statistically significant independent predictor of lymph node metastasis in the tumor size cohort as well as in the total patient population. Upon Cox regression analysis, increased expression level of the combined proteins correlated with decreased disease-free survival in the total patients as well as those who received adjuvant chemotherapy and those who had early stage breast cancer. In additional in vitro experiments, inhibition of SIRT1 expression with small interfering RNA (siRNA) suppressed tumor invasion in three different TNBC cell lines, and altered expression levels of EMT-related proteins following SIRT1 gene inhibition were identified on western blotting and fluorescence activated cell sorting (FACS) analysis; on the other hand, no change in expression levels of the cell cycle-related factors was observed. Our analysis showed the potential role of SIRT1 in association with EMT-related factors on tumor invasion, metastasis, and disease-free survival in TNBC, SIRT1, and associated EMT-related markers may offer a new prognostic indicator as well as a novel therapeutic candidate.
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Affiliation(s)
- Min-Sun Jin
- Department of Pathology, Buchen St. Mary's Hospital, Catholic university, Gyeonggi-do, South Korea
| | - Chang Lim Hyun
- Department of Pathology, Jeju National University Hospital, Jeju, South Korea
| | - In Ae Park
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Ji Young Kim
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Yul Ri Chung
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Seock-Ah Im
- Department of Internal Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Kyung-Hun Lee
- Department of Internal Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Hyeong-Gon Moon
- Department of Surgery, Seoul National University Hospital, Seoul, South Korea
| | - Han Suk Ryu
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea.
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32
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Wang R, Peng L, Zhao J, Zhang L, Guo C, Zheng W, Chen H. Gardenamide A Protects RGC-5 Cells from H₂O₂-Induced Oxidative Stress Insults by Activating PI3K/Akt/eNOS Signaling Pathway. Int J Mol Sci 2015; 16:22350-67. [PMID: 26389892 PMCID: PMC4613312 DOI: 10.3390/ijms160922350] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 08/24/2015] [Accepted: 08/31/2015] [Indexed: 01/04/2023] Open
Abstract
Gardenamide A (GA) protects the rat retinal ganglion (RGC-5) cells against cell apoptosis induced by H₂O₂. The protective effect of GA was completely abrogated by the specific phosphoinositide 3-kinase (PI3K) inhibitor LY294002, and the specific protein kinase B (Akt) inhibitor Akt VIII respectively, indicating that the protective mechanism of GA is mediated by the PI3K/Akt signaling pathway. The specific extracellular signal-regulated kinase (ERK1/2) inhibitor PD98059 could not block the neuroprotection of GA. GA attenuated the levels of reactive oxygen species (ROS) and malondialdehyde (MDA) induced by H₂O₂. Western blotting showed that GA promoted the phosphorylation of ERK1/2, Akt and endothelial nitric oxide synthase (eNOS), respectively, and effectively reversed the H₂O₂-inhibited phosphorylation of these three proteins. LY294002 completely inhibited the GA-activated phosphorylation of Akt, while only partially inhibiting eNOS. This evidence implies that eNOS may be activated directly by GA. PD98059 attenuated only partially the GA-induced phosphorylation of ERK1/2 with/without the presence of H₂O₂, indicating that GA may activate ERK1/2 directly. All these results put together confirm that GA protects RGC-5 cells from H₂O₂ insults via the activation of PI3K/Akt/eNOS signaling pathway. Whether the ERK1/2 signaling pathway is involved requires further investigations.
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Affiliation(s)
- Rikang Wang
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, China.
| | - Lizhi Peng
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Jiaqiang Zhao
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Laitao Zhang
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Cuiping Guo
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
| | - Wenhua Zheng
- Faculty of Health Sciences, University of Macao, Macao, China.
| | - Heru Chen
- Institute of Traditional Chinese Medicine and Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, China.
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Guangzhou 510632, China.
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33
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Kim H, Lee KH, Park IA, Chung YR, Im SA, Noh DY, Han W, Moon HG, Jung YY, Ryu HS. Expression of SIRT1 and apoptosis-related proteins is predictive for lymph node metastasis and disease-free survival in luminal A breast cancer. Virchows Arch 2015; 467:563-70. [PMID: 26280894 DOI: 10.1007/s00428-015-1815-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 06/29/2015] [Accepted: 07/17/2015] [Indexed: 12/18/2022]
Abstract
Luminal A breast cancer can present with early, unexpected lymph node metastasis, and sentinel lymph node biopsy has been reported false negative in some cases. We aimed to construct a biomarker-based model that predicts lymph node metastasis in luminal A breast cancer, using expression of silent mating type information regulation 2 homolog 1 (SIRT1) and apoptosis-related factors, which are known to be closely related. We selected tissue samples of 278 cases of luminal A invasive ductal carcinoma, constructed tissue microarrays, and performed immunohistochemical staining for SIRT1 and four apoptosis-related proteins. In constructing the best predictive model for lymph node metastasis, six clinicopathological parameters and five molecular markers were considered. Independent factors predictive of lymph node metastasis were pT stage (OR 1.829, p = 0.027), lymphovascular invasion (OR 4.128, p < 0.001), and decreased expression of caspase-3 (OR 0.535, p = 0.034) and of SIRT1 (OR 0.526, p = 0.053). A combination nuclear grade, lymphovascular invasion, increased B-cell lymphoma 2 (Bcl-2) expression, and reduced expression of caspase-3 and of SIRT1 yielded the strongest predictive performance for lymph node metastasis with an area under the curve (AUC) of 0.696. This combination was also predictive of shortened disease-free survival (73.1 vs. 67.7 months, p = 0.003). Our data support a role of SIRT1 protein as tumor suppressor in luminal A breast cancer, in association with apoptosis-related proteins. Our model based upon a combination of these biomarkers is expected to increase accuracy of prediction of lymph node metastasis in luminal A breast cancer. This might serve as a valuable tool in determining the optimal surgical strategy in breast cancer patients.
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Affiliation(s)
- Hyojin Kim
- Department of Pathology, Seoul National University Hospital, Seoul, Korea
| | - Kyung-Hun Lee
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - In Ae Park
- Department of Pathology, Seoul National University Hospital, Seoul, Korea
| | - Yul Ri Chung
- Department of Pathology, Seoul National University Hospital, Seoul, Korea
| | - Seock-Ah Im
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea.
| | - Dong-Young Noh
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Wonshik Han
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Hyeong-Gon Moon
- Department of Surgery, Seoul National University Hospital, Seoul, Korea
| | - Yoon Yang Jung
- Department of Pathology, Yonsei University College of Medicine, Severance Hospital, Seoul, Korea
| | - Han Suk Ryu
- Department of Pathology, Seoul National University Hospital, Seoul, Korea.
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Chung YR, Kim H, Park SY, Park IA, Jang JJ, Choe JY, Jung YY, Im SA, Moon HG, Lee KH, Suh KJ, Kim TY, Noh DY, Han W, Ryu HS. Distinctive role of SIRT1 expression on tumor invasion and metastasis in breast cancer by molecular subtype. Hum Pathol 2015; 46:1027-35. [PMID: 26004371 DOI: 10.1016/j.humpath.2015.03.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 03/23/2015] [Accepted: 03/30/2015] [Indexed: 01/25/2023]
Abstract
The aim of this study was to evaluate silent mating type information regulation 2 homolog 1 (SIRT1) expression levels by subtype and evaluate its predictive power of axillary lymph node metastasis (LNM) and its association with clinical outcome. A total of 427 patients diagnosed with invasive ductal carcinoma were chosen, immunohistochemical staining for SIRT1 expression was performed on tissue microarrays, and in vitro experiments with each intrinsic subtype of human breast cancer cell line were carried out. Increased expression of SIRT1 in hormone receptor-positive breast cancer and HER2 breast cancer subtype significantly correlated with lower risks of LNM. On the contrary, in triple-negative breast cancer, increased SIRT1 expression was more frequently observed in LNM-positive subgroup than LNM-negative subgroup. Combination of statistically significant, independent parameters including SIRT1 revealed predictive performance for LNM with area under the curve of 0.602, 0.587, and 0.726 for hormone receptor-positive breast cancer, HER2 breast cancer, and triple-negative breast cancer subtype, respectively. Inhibition of SIRT1 expression with small interfering RNA suppressed tumor invasion in MDA-MB-231, specifically. This is the first study to examine SIRT1 expression in breast cancer by subtype, and we have observed the potentially different role of SIRT1 gene having tumor-suppressive or tumor-promoting influence depending on the subtype; thus, different associations between SIRT1 expression and prognosis by subtype should be considered in its target therapy.
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Affiliation(s)
- Yul Ri Chung
- Department of Pathology, Seoul National University Hospital, 110-744 Seoul, Republic of Korea
| | - Hyojin Kim
- Department of Pathology, Seoul National University Hospital, 110-744 Seoul, Republic of Korea
| | - Soo Young Park
- Department of Pathology, Seoul National University Hospital, 110-744 Seoul, Republic of Korea
| | - In Ae Park
- Department of Pathology, Seoul National University Hospital, 110-744 Seoul, Republic of Korea
| | - Ja June Jang
- Department of Pathology, Seoul National University Hospital, 110-744 Seoul, Republic of Korea
| | - Ji-Young Choe
- Department of Pathology, Seoul National University Bundang Hospital, 463-707 Seongnam-si, Gyeonggido, Republic of Korea
| | - Yoon Yang Jung
- Department of Pathology, Samsung Medical Center, Sungkyungkwan University School of Medicine, 135-710 Seoul, Republic of Korea
| | - Seock-Ah Im
- Department of Internal Medicine, Seoul National University Hospital, 110-744 Seoul, Republic of Korea
| | - Hyeong-Gon Moon
- Department of Surgery, Seoul National University Hospital, 110-744 Seoul, Republic of Korea
| | - Kyung-Hun Lee
- Department of Internal Medicine, Seoul National University Hospital, 110-744 Seoul, Republic of Korea
| | - Koung Jin Suh
- Department of Internal Medicine, Seoul National University Hospital, 110-744 Seoul, Republic of Korea
| | - Tae-Yong Kim
- Department of Internal Medicine, Seoul National University Hospital, 110-744 Seoul, Republic of Korea
| | - Dong-Young Noh
- Department of Surgery, Seoul National University Hospital, 110-744 Seoul, Republic of Korea
| | - Wonshik Han
- Department of Surgery, Seoul National University Hospital, 110-744 Seoul, Republic of Korea
| | - Han Suk Ryu
- Department of Pathology, Seoul National University Hospital, 110-744 Seoul, Republic of Korea.
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35
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Burton K, Shaw L, Morey LM. Differential effect of estradiol and bisphenol A on Set8 and Sirt1 expression in prostate cancer. Toxicol Rep 2015; 2:817-823. [PMID: 28962417 PMCID: PMC5598099 DOI: 10.1016/j.toxrep.2015.01.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 12/19/2014] [Accepted: 01/28/2015] [Indexed: 11/28/2022] Open
Abstract
Exposure to estrogenic compounds has been shown to epigenetically reprogram the prostate and may contribute to prostate cancer. The goal of this study was to determine the effect of physiological doses of estradiol and bisphenol A (BPA) on the expression of histone modifying enzymes (HMEs) in prostate cancer. Using two human prostate cancer cell lines we examined the expression of Set8, a histone methyltransferase, and Sirt1, a histone deacetylase, after exposure to estrogen or BPA. These experiments were carried out in the presence of natural hormones to understand the impact of additional exposure to estrogen or BPA on HME expression. We found differential expression of the HMEs in the different models and between the different compounds. Further, we determined that the changes in gene expression occurred via estrogen receptor signaling using the ER antagonist, ICI 182,780 (fulvestrant). Interestingly we found that the combination of ICI with estrogen or BPA greatly affected the expression of Set8, even when the hormone alone had no effect. This study demonstrates that the effects of estrogen and BPA on HME expression vary and that the presence of both the estrogen receptor and androgen receptor may be important for therapeutic intervention.
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Affiliation(s)
- Kevin Burton
- Department of Biology, Canisius College, Buffalo, NY 14208, United States
| | - Lisa Shaw
- Department of Biology, Canisius College, Buffalo, NY 14208, United States
| | - Lisa M Morey
- Department of Biology, Canisius College, Buffalo, NY 14208, United States
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36
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Bennesch MA, Picard D. Minireview: Tipping the balance: ligand-independent activation of steroid receptors. Mol Endocrinol 2015; 29:349-63. [PMID: 25625619 DOI: 10.1210/me.2014-1315] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Steroid receptors are prototypical ligand-dependent transcription factors and a textbook example for allosteric regulation. According to this canonical model, binding of cognate steroid is an absolute requirement for transcriptional activation. Remarkably, the simple one ligand-one receptor model could not be farther from the truth. Steroid receptors, notably the sex steroid receptors, can receive multiple inputs. Activation of steroid receptors by other signals, working through their own signaling pathways, in the absence of the cognate steroids, represents the most extreme form of signaling cross talk. Compared with cognate steroids, ligand-independent activation pathways produce similar but not identical outputs. Here we review the phenomena and discuss what is known about the underlying molecular mechanisms and the biological significance. We hypothesize that steroid receptors may have evolved to be trigger happy. In addition to their cognate steroids, many posttranslational modifications and interactors, modulated by other signals, may be able to tip the balance.
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Affiliation(s)
- Marcela A Bennesch
- Département de Biologie Cellulaire, Université de Genève, Sciences III, CH-1211 Genève 4, Switzerland
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37
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Cao YW, Li WQ, Wan GX, Li YX, Du XM, Li YC, Li F. Correlation and prognostic value of SIRT1 and Notch1 signaling in breast cancer. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2014; 33:97. [PMID: 25420528 PMCID: PMC4248440 DOI: 10.1186/s13046-014-0097-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 11/07/2014] [Indexed: 10/27/2023]
Abstract
BACKGROUND SIRT1 expression and Notch1 signaling have been implicated in tumorigenesis in many cancers, but their association with survival in breast cancer has not been determined. The purpose of this study was to assess the possible prognostic value of SIRT1, N1IC, and Snail expression in breast cancer patients. METHODS Immunohistochemistry was performed to examine the expression of SIRT1, N1IC, and Snail, and the combined expression of SIRT1 and N1IC, using tissue microarrays containing breast cancer tissue and matched adjacent normal breast tissue from 150 breast cancer patients. Survival analysis was carried out using the Kaplan-Meier method. Univariate and multivariate analysis were used to evaluate the prognostic value of SIRT1, N1IC, Snail and combined SIRT1/N1IC expression, in addition to other clinicopathological factors, including grade, lymph node status, disease stage, and estrogen, progesterone, and human epidermal growth factor receptor 2 receptor status in breast carcinoma patients. RESULTS SIRT1, N1IC, and Snail were all found to be highly expressed and an inverse correlation between SIRT1 and N1IC in breast cancer tissue. The three markers significantly correlated with lymph node status. Patients with low SIRT1 expression exhibited shorter overall survival (OS) and disease-free survival (DFS), and patients with combined low expression of SIRT1 and high expression of N1IC had the worse OS and DFS. Univariate and multivariate survival analysis revealed that low expression of SIRT1 and SIRT1-low/N1IC-high expression were independent prognostic factors for poor survival. CONCLUSIONS These results suggest that low expression of SIRT1 or the combined low expression of SIRT1 and high expression of N1IC could be used as indicators of poor prognosis, and may represent novel therapeutic targets in breast cancer.
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Affiliation(s)
- Yu-Wen Cao
- Department of Pathology and Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.
| | - Wen-Qin Li
- Department of Pathology and Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.
| | - Guo-Xing Wan
- Department of Pathology and Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.
| | - Yi-Xiao Li
- Department of Pathology and Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.
| | - Xiao-Ming Du
- Department of Pathology and Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.
| | - Yu-Cong Li
- Department of Pathology and Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.
| | - Feng Li
- Department of Pathology and Key Laboratory of Xinjiang Endemic and Ethnic Diseases (Ministry of Education), Shihezi University School of Medicine, Shihezi, Xinjiang, 832000, China.
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38
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Clark-Knowles KV, Dewar-Darch D, Jardine KE, McBurney MW. Modulation of tumorigenesis by dietary intervention is not mediated by SIRT1 catalytic activity. PLoS One 2014; 9:e112406. [PMID: 25380034 PMCID: PMC4224430 DOI: 10.1371/journal.pone.0112406] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 10/14/2014] [Indexed: 12/31/2022] Open
Abstract
The protein deacetylase SIRT1 is involved in the regulation of a large number of cellular processes that are thought to be required for cancer initiation and progression. Both SIRT1 activity and tumorigenesis can be influenced by dietary fat and polyphenolics. We set out to determine whether dietary modulations of tumorigenesis are mediated by SIRT1 catalytic functions. We introduced a mammary gland tumor-inducing transgene, MMTV-PyMT, into stocks of mice bearing a H355Y point mutation in the Sirt1 gene that abolishes SIRT1 catalytic activity. Tumor latency was reduced in animals fed a high fat diet but this effect was not dependent on SIRT1 activity. Resveratrol had little effect on tumor formation except in animals heterozygous for the mutant Sirt1 gene. We conclude that the effects of these dietary interventions on tumorigenesis are not mediated by modulation of SIRT1 catalytic activity.
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MESH Headings
- Analysis of Variance
- Animals
- Antigens, Polyomavirus Transforming/genetics
- Antineoplastic Agents, Phytogenic/pharmacology
- Biocatalysis
- Cell Transformation, Neoplastic/drug effects
- Cell Transformation, Neoplastic/genetics
- Diet, High-Fat
- Heterozygote
- Male
- Mammary Neoplasms, Experimental/diet therapy
- Mammary Neoplasms, Experimental/genetics
- Mammary Neoplasms, Experimental/metabolism
- Mammary Tumor Virus, Mouse/genetics
- Mice, Transgenic
- Point Mutation
- Resveratrol
- Sirtuin 1/genetics
- Sirtuin 1/metabolism
- Stilbenes/pharmacology
- Tumor Burden/drug effects
- Tumor Burden/genetics
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Affiliation(s)
| | - Danielle Dewar-Darch
- Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Karen E. Jardine
- Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Michael W. McBurney
- Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
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39
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The direct effect of estrogen on cell viability and apoptosis in human gastric cancer cells. Mol Cell Biochem 2014; 395:99-107. [PMID: 24934239 DOI: 10.1007/s11010-014-2115-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Accepted: 06/02/2014] [Indexed: 12/16/2022]
Abstract
Epidemiology researches indicated that gastric cancer is a male-predominant disease; both expression level of estrogen and expression pattern of estrogen receptors (ERs) influence its carcinogenesis. But the direct effect of estrogen on gastric cancer cells is still unclear. This study aimed to explore the direct effect of β-estradiol (E2) on gastric cancer cells. SGC7901 and BGC823 were treated with a serial of concentrations of E2. The survival rates of both the cell lines were significantly reduced, and the reduction of viability was due to apoptosis triggered by E2 treatment. Caspase 3 was activated in response to the increasing E2 concentration in both SGC7901 and BGC823. Cleaved Caspase 3 fragments were detected, and the expression levels of Bcl-2 and Bcl-xL were reduced. Apoptosis was further confirmed by flow cytometry. The expression level of PEG10, an androgen receptor target gene, was reduced during E2 treatment. Both ERα and ERβ were expressed in these cell lines, and the result of bioinformatics analysis of gastric cancer from GEO datasets indicated that the expression levels of both ERα and ERβ were significantly higher in noncancerous gastric tissues than in gastric cancer tissues. Our research indicated that estrogen can reduce cell viability and promote apoptosis in gastric cancer cells directly; ERs expression level is associated with gastric cancer. Our research will help to understand the mechanism of gender disparity in gastric cancer.
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40
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Hwang BJ, Madabushi A, Jin J, Lin SYS, Lu AL. Histone/protein deacetylase SIRT1 is an anticancer therapeutic target. Am J Cancer Res 2014; 4:211-221. [PMID: 24959376 PMCID: PMC4065402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 04/23/2014] [Indexed: 06/03/2023] Open
Abstract
SIRT1, a member of the NAD(+)-dependent histone/protein deacetylase family, is involved in chromatin remodeling, DNA repair, and stress response and is a potential drug target. 5-fluorouracil (FU) and the SN1-type DNA methylating agent temozolomide (TMZ) are anticancer agents. In this study, we demonstrate that sirt1 knockout mouse embryonic fibroblast cells are more sensitive to FU and DNA methylating agents than normal cells. Based on these findings, the chemotherapy efficacy of SIRT1 inhibitors in combination with FU or TMZ were tested with human breast cancer cells. We found that treatments combining SIRT1 inhibitors with FU or TMZ show synergistic reduction of cell viability and colony formation of breast cancer cells. Thus, inhibition of SIRT1 activity provides a novel anticancer strategy.
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Affiliation(s)
- Bor-Jang Hwang
- Department of Biochemistry and Molecular Biology, University of Maryland School of MedicineBaltimore, MD 21201, USA
| | - Amrita Madabushi
- Department of Biochemistry and Molecular Biology, University of Maryland School of MedicineBaltimore, MD 21201, USA
- Current address: Department of Natural & Physical Sciences, Life Sciences Institute; Baltimore City Community CollegeBaltimore, MD 21201
| | - Jin Jin
- Department of Biochemistry and Molecular Biology, University of Maryland School of MedicineBaltimore, MD 21201, USA
| | - Shiou-Yuh S Lin
- Department of Biochemistry and Molecular Biology, University of Maryland School of MedicineBaltimore, MD 21201, USA
| | - A-Lien Lu
- Department of Biochemistry and Molecular Biology, University of Maryland School of MedicineBaltimore, MD 21201, USA
- University of Maryland Greenebaum Cancer CenterBaltimore, MD 21201, USA
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41
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Takai H, Matsumura H, Matsui S, Kim KM, Mezawa M, Nakayama Y, Ogata Y. Unliganded estrogen receptor α stimulates bone sialoprotein gene expression. Gene 2014; 539:50-7. [DOI: 10.1016/j.gene.2014.01.063] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 01/07/2014] [Accepted: 01/25/2014] [Indexed: 10/25/2022]
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42
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Martins IJ. Induction of NAFLD with Increased Risk of Obesity and Chronic Diseases in Developed Countries. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/ojemd.2014.44011] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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43
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Clark-Knowles KV, Dewar-Darch D, Jardine KE, McBurney MW. SIRT1 catalytic activity has little effect on tumor formation and metastases in a mouse model of breast cancer. PLoS One 2013; 8:e82106. [PMID: 24278473 PMCID: PMC3836945 DOI: 10.1371/journal.pone.0082106] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Accepted: 10/27/2013] [Indexed: 12/23/2022] Open
Abstract
The protein deacetylase SIRT1 has been implicated in the regulation of a large number of cellular processes that are thought to be required for cancer initiation and progression. There are conflicting data that make it unclear whether Sirt1 functions as an oncogene or tumor suppressor. To assess the effect of SIRT1 on the emergence and progression of mammary tumors, we crossed mice that harbor a point mutation that abolishes SIRT1 catalytic activity with mice carrying the polyoma middle T transgene driven by the murine mammary tumor virus promoter (MMTV-PyMT). The absence of SIRT1 catalytic activity neither accelerated nor blocked the formation of tumors and metastases in this model. There was a lag in tumor latency that modestly extended survival in Sirt1 mutant mice that we attribute to a delay in mammary gland development and not to a direct effect of SIRT1 on carcinogenesis. These results are consistent with previous evidence suggesting that Sirt1 is not a tumor promoter or a tumor suppressor.
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Affiliation(s)
| | - Danielle Dewar-Darch
- Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Karen E. Jardine
- Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Michael W. McBurney
- Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
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Han L, Liang XH, Chen LX, Bao SM, Yan ZQ. SIRT1 is highly expressed in brain metastasis tissues of non-small cell lung cancer (NSCLC) and in positive regulation of NSCLC cell migration. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2013; 6:2357-2365. [PMID: 24228097 PMCID: PMC3816804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 10/12/2013] [Indexed: 06/02/2023]
Abstract
Brain metastases are a frequent and ongoing major complication of non-small cell lung cancer (NSCLC). To deepen our understanding to the underlying mechanisms by which NSCLC cells metastasize to brain and hence to improve the therapy, a high throughput RNAi screening with shRNA library of 153 epigenetic genes was subjected to A549, a NSCLC cell line with high migration ability, to examine the effects of these genes on cell migration by wound-healing assay. The screening results showed that knockdown of 2 genes (KDM5B and SIRT1) dramatically and specifically inhibits A549 migration but not affects the proliferation, which was subsequently confirmed through transwell migration assay. Furthermore, SIRT1 is found to be highly expressed in brain metastasis tissues of NSCLC, compared to the NSCLC tissues, suggesting that SIRT1 may play roles in brain metastasis of NSCLC. The relationship between SIRT1 expression and cell migration ability was further investigated in three NSCLC cell lines and the result indicated that SIRT1 expression is tightly correlated with cell migration ability. Collectively, our work provides potential biomarker and therapeutic target for brain metastasis of NSCLC.
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Affiliation(s)
- Lin Han
- The Experimental Animal Center, Shanghai Institute for Biological Sciences, Chinese Academy of SciencesShanghai, China
| | - Xiao-Hua Liang
- Department of Oncology, Huashan Hospital, Fudan UniversityShanghai, China
| | - Li-Xin Chen
- The Experimental Animal Center, Shanghai Institute for Biological Sciences, Chinese Academy of SciencesShanghai, China
| | - Shi-Min Bao
- The Experimental Animal Center, Shanghai Institute for Biological Sciences, Chinese Academy of SciencesShanghai, China
| | - Zhi-Qiang Yan
- The Experimental Animal Center, Shanghai Institute for Biological Sciences, Chinese Academy of SciencesShanghai, China
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Lau WM, Doucet M, Huang D, Weber KL, Kominsky SL. CITED2 modulates estrogen receptor transcriptional activity in breast cancer cells. Biochem Biophys Res Commun 2013; 437:261-6. [PMID: 23811274 DOI: 10.1016/j.bbrc.2013.06.063] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 06/18/2013] [Indexed: 02/07/2023]
Abstract
Cbp/p300-interacting transactivator with Glu/Asp-rich carboxy-terminal domain 2 (CITED2) is a member of the CITED family of non-DNA binding transcriptional co-activators of the p300/CBP-mediated transcription complex. Previously, we identified CITED2 as being overexpressed in human breast tumors relative to normal mammary epithelium. Upon further investigation within the estrogen receptor (ER)-positive subset of these breast tumor samples, we found that CITED2 mRNA expression was elevated in those associated with poor survival. In light of this observation, we investigated the effect of elevated CITED2 levels on ER function. While ectopic overexpression of CITED2 in three ER-positive breast cancer cell lines (MCF-7, T47D, and CAMA-1) did not alter cell proliferation in complete media, growth was markedly enhanced in the absence of exogenous estrogen. Correspondingly, cells overexpressing CITED2 demonstrated reduced sensitivity to the growth inhibitory effects of the selective estrogen receptor modulator, 4-hydroxytamoxifen. Subsequent studies revealed that basal ER transcriptional activity was elevated in CITED2-overexpressing cells and was further increased upon the addition of estrogen. Similarly, basal and estrogen-induced expression of the ER-regulated genes trefoil factor 1 (TFF1) and progesterone receptor (PGR) was higher in cells overexpressing CITED2. Concordant with this observation, ChIP analysis revealed higher basal levels of CITED2 localized to the TFF-1 and PGR promoters in cells with ectopic overexpression of CITED2, and these levels were elevated further in response to estrogen stimulation. Taken together, these data indicate that CITED2 functions as a transcriptional co-activator of ER in breast cancer cells and that its increased expression in tumors may result in estrogen-independent ER activation, thereby reducing estrogen dependence and response to anti-estrogen therapy.
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Affiliation(s)
- Wen Min Lau
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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