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Ahmed MB, Alghamdi AAA, Islam SU, Lee JS, Lee YS. cAMP Signaling in Cancer: A PKA-CREB and EPAC-Centric Approach. Cells 2022; 11:cells11132020. [PMID: 35805104 PMCID: PMC9266045 DOI: 10.3390/cells11132020] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/17/2022] [Accepted: 06/23/2022] [Indexed: 02/01/2023] Open
Abstract
Cancer is one of the most common causes of death globally. Despite extensive research and considerable advances in cancer therapy, the fundamentals of the disease remain unclear. Understanding the key signaling mechanisms that cause cancer cell malignancy may help to uncover new pharmaco-targets. Cyclic adenosine monophosphate (cAMP) regulates various biological functions, including those in malignant cells. Understanding intracellular second messenger pathways is crucial for identifying downstream proteins involved in cancer growth and development. cAMP regulates cell signaling and a variety of physiological and pathological activities. There may be an impact on gene transcription from protein kinase A (PKA) as well as its downstream effectors, such as cAMP response element-binding protein (CREB). The position of CREB downstream of numerous growth signaling pathways implies its oncogenic potential in tumor cells. Tumor growth is associated with increased CREB expression and activation. PKA can be used as both an onco-drug target and a biomarker to find, identify, and stage tumors. Exploring cAMP effectors and their downstream pathways in cancer has become easier using exchange protein directly activated by cAMP (EPAC) modulators. This signaling system may inhibit or accelerate tumor growth depending on the tumor and its environment. As cAMP and its effectors are critical for cancer development, targeting them may be a useful cancer treatment strategy. Moreover, by reviewing the material from a distinct viewpoint, this review aims to give a knowledge of the impact of the cAMP signaling pathway and the related effectors on cancer incidence and development. These innovative insights seek to encourage the development of novel treatment techniques and new approaches.
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Affiliation(s)
- Muhammad Bilal Ahmed
- BK21 FOUR KNU Creative BioResearch Group, School of Life Sciences, College of Natural Sciences, Kyungpook National University, Daegu 41566, Korea; (M.B.A.); (J.-S.L.)
| | | | - Salman Ul Islam
- Department of Pharmacy, Cecos University, Peshawar, Street 1, Sector F 5 Phase 6 Hayatabad, Peshawar 25000, Pakistan;
| | - Joon-Seok Lee
- BK21 FOUR KNU Creative BioResearch Group, School of Life Sciences, College of Natural Sciences, Kyungpook National University, Daegu 41566, Korea; (M.B.A.); (J.-S.L.)
| | - Young-Sup Lee
- BK21 FOUR KNU Creative BioResearch Group, School of Life Sciences, College of Natural Sciences, Kyungpook National University, Daegu 41566, Korea; (M.B.A.); (J.-S.L.)
- Correspondence: ; Tel.: +82-53-950-6353; Fax: +82-53-943-2762
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Chen Y, Li X, Xu J, Xiao H, Tang C, Liang W, Zhu X, Fang Y, Wang H, Shi J. Knockdown of nuclear receptor binding SET domain-containing protein 1 (NSD1) inhibits proliferation and facilitates apoptosis in paclitaxel-resistant breast cancer cells via inactivating the Wnt/β-catenin signaling pathway. Bioengineered 2022; 13:3526-3536. [PMID: 35200072 PMCID: PMC8973718 DOI: 10.1080/21655979.2021.2018973] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The burden of breast cancer (BC) has exacerbated over decades. Paclitaxel resistance is responsible for increasing BC treatment burden. Nuclear receptor binding SET domain-containing protein 1 (NSD1) is positively correlated with a poor prognosis in patients with BC. This study investigates the function of NSD1 in paclitaxel-resistant (PR) BC cells. The high levels of NSD1 and Wnt10b in PR BC cell lines (MCF-7/PR) or MCF-7 parental cells were determined by RT-qPCR. Western blotting was conducted to measure the levels of NSD1 protein, apoptosis-associated proteins, Wnt10b protein, H3K36me2 protein, H3K27me3 protein, and signal pathway-associated proteins in MCF-7/PR cells or MCF-7 cells or in vivo subcutaneous xenografted tumor model, and the results demonstrated that NSD1 inhibited cell apoptosis and promoted cell proliferation and tumor growth via activating Wnt/β-catenin pathway. Cell apoptosis and viability were estimated using cell counting kit-8 assays and flow cytometry. Positive correlation between NSD1 and Wnt10b was identified by chromatin immunoprecipitation assay. The distribution of β-catenin was determined by immunofluorescence assays. We conclude that NSD1 knockdown inhibits the viability and promotes the apoptosis of paclitaxel-resistant BC cells by inactivating the NSD1/H3K27me3/Wnt10b/β-catenin signaling pathway.
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Affiliation(s)
- Yi Chen
- Department of Oncology, Nanjing Pukou Central Hospital, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xiao Li
- Department of Thyroid and Mammary Gland Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jin Xu
- Department of Thyroid and Mammary Gland Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Hua Xiao
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Cuiju Tang
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wei Liang
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xuedan Zhu
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yueyu Fang
- Department of Oncology, Nanjing Pukou Central Hospital, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Hanjin Wang
- Department of Thyroid and Mammary Gland Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Junfeng Shi
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
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Steven A, Friedrich M, Jank P, Heimer N, Budczies J, Denkert C, Seliger B. What turns CREB on? And off? And why does it matter? Cell Mol Life Sci 2020; 77:4049-4067. [PMID: 32347317 PMCID: PMC7532970 DOI: 10.1007/s00018-020-03525-8] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 03/21/2020] [Accepted: 04/06/2020] [Indexed: 12/16/2022]
Abstract
Altered expression and function of the transcription factor cyclic AMP response-binding protein (CREB) has been identified to play an important role in cancer and is associated with the overall survival and therapy response of tumor patients. This review focuses on the expression and activation of CREB under physiologic conditions and in tumors of distinct origin as well as the underlying mechanisms of CREB regulation by diverse stimuli and inhibitors. In addition, the clinical relevance of CREB is summarized, including its use as a prognostic and/or predictive marker as well as a therapeutic target.
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Affiliation(s)
- André Steven
- Institute for Medical Immunology, Martin Luther University Halle-Wittenberg, Magdeburger Str. 2, 06112, Halle (Saale), Germany
| | - Michael Friedrich
- Institute for Medical Immunology, Martin Luther University Halle-Wittenberg, Magdeburger Str. 2, 06112, Halle (Saale), Germany
| | - Paul Jank
- Institute of Pathology, Philipps University Marburg, 35043, Marburg, Germany
| | - Nadine Heimer
- Institute for Medical Immunology, Martin Luther University Halle-Wittenberg, Magdeburger Str. 2, 06112, Halle (Saale), Germany
| | - Jan Budczies
- Institute of Pathology, University Clinic Heidelberg, 69120, Heidelberg, Germany
| | - Carsten Denkert
- Institute of Pathology, Philipps University Marburg, 35043, Marburg, Germany
| | - Barbara Seliger
- Institute for Medical Immunology, Martin Luther University Halle-Wittenberg, Magdeburger Str. 2, 06112, Halle (Saale), Germany.
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Le Naour A, Koffi Y, Diab M, Le Guennec D, Rougé S, Aldekwer S, Goncalves-Mendes N, Talvas J, Farges MC, Caldefie-Chezet F, Vasson MP, Rossary A. EO771, the first luminal B mammary cancer cell line from C57BL/6 mice. Cancer Cell Int 2020; 20:328. [PMID: 32699527 PMCID: PMC7372867 DOI: 10.1186/s12935-020-01418-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 07/13/2020] [Indexed: 12/12/2022] Open
Abstract
Background Despite decades of therapeutic trials, effective diagnosis, many drugs available and numerous studies on breast cancer, it remains the deadliest cancer in women. In order to choose the most appropriate treatment and to understand the prognosis of the patients, breast cancer is divided into different subtypes using a molecular classification. Just as there remains a need to discover new effective therapies, models to test them are also required. Methods The EO771 (also named E0771 or EO 771) murine mammary cancer cell line was originally isolated from a spontaneous tumour in C57BL/6 mouse. Although frequently used, this cell line remains poorly characterized. Therefore, the EO771 phenotype was investigated. The phenotype was compared to that of MCF-7 cells, known to be of luminal A subtype and to express estrogen receptors, as well as MDA-MB-231 cells, which are triple negative. Their sensitivity to hormonal treatment was evaluated by viability tests. Results The EO771 were estrogen receptor α negative, estrogen receptor β positive, progesterone receptor positive and ErbB2 positive. This phenotype was associated with a sensitivity to anti-estrogen treatments such as tamoxifen, 4-hydroxy-tamoxifen, endoxifen and fulvestrant. Conclusions On account of the numerous results published with the EO771 cell line, it is important to know its classification, to facilitate comparisons with corresponding types of tumours in patients. Transcriptomic and protein analysis of the EO771 cell line classified it within the luminal B subtype. Luminal B cancers correspond to one of the subtypes most frequently encountered in patients and associated with a poor prognosis.
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Affiliation(s)
- Augustin Le Naour
- Human Nutrition Unit, ECREIN team, UMR 1019, University of Clermont Auvergne, INRAE, CRNH-Auvergne, TSA 50400, 28 place Henri Dunant, 63000 Clermont-Ferrand Cedex 1, France
| | - Yvonne Koffi
- Human Nutrition Unit, ECREIN team, UMR 1019, University of Clermont Auvergne, INRAE, CRNH-Auvergne, TSA 50400, 28 place Henri Dunant, 63000 Clermont-Ferrand Cedex 1, France
| | - Mariane Diab
- Human Nutrition Unit, ECREIN team, UMR 1019, University of Clermont Auvergne, INRAE, CRNH-Auvergne, TSA 50400, 28 place Henri Dunant, 63000 Clermont-Ferrand Cedex 1, France
| | - Delphine Le Guennec
- Human Nutrition Unit, ECREIN team, UMR 1019, University of Clermont Auvergne, INRAE, CRNH-Auvergne, TSA 50400, 28 place Henri Dunant, 63000 Clermont-Ferrand Cedex 1, France
| | - Stéphanie Rougé
- Human Nutrition Unit, ECREIN team, UMR 1019, University of Clermont Auvergne, INRAE, CRNH-Auvergne, TSA 50400, 28 place Henri Dunant, 63000 Clermont-Ferrand Cedex 1, France
| | - Sahar Aldekwer
- Human Nutrition Unit, ECREIN team, UMR 1019, University of Clermont Auvergne, INRAE, CRNH-Auvergne, TSA 50400, 28 place Henri Dunant, 63000 Clermont-Ferrand Cedex 1, France
| | - Nicolas Goncalves-Mendes
- Human Nutrition Unit, ECREIN team, UMR 1019, University of Clermont Auvergne, INRAE, CRNH-Auvergne, TSA 50400, 28 place Henri Dunant, 63000 Clermont-Ferrand Cedex 1, France
| | - Jérémie Talvas
- Human Nutrition Unit, ECREIN team, UMR 1019, University of Clermont Auvergne, INRAE, CRNH-Auvergne, TSA 50400, 28 place Henri Dunant, 63000 Clermont-Ferrand Cedex 1, France
| | - Marie-Chantal Farges
- Human Nutrition Unit, ECREIN team, UMR 1019, University of Clermont Auvergne, INRAE, CRNH-Auvergne, TSA 50400, 28 place Henri Dunant, 63000 Clermont-Ferrand Cedex 1, France
| | - Florence Caldefie-Chezet
- Human Nutrition Unit, ECREIN team, UMR 1019, University of Clermont Auvergne, INRAE, CRNH-Auvergne, TSA 50400, 28 place Henri Dunant, 63000 Clermont-Ferrand Cedex 1, France
| | - Marie-Paule Vasson
- Human Nutrition Unit, ECREIN team, UMR 1019, University of Clermont Auvergne, INRAE, CRNH-Auvergne, TSA 50400, 28 place Henri Dunant, 63000 Clermont-Ferrand Cedex 1, France.,Department of Nutrition, Gabriel Montpied University Hospital, Jean Perrin Cancer Centre, 58 rue Montalembert, 63011 Clermont-Ferrand, France
| | - Adrien Rossary
- Human Nutrition Unit, ECREIN team, UMR 1019, University of Clermont Auvergne, INRAE, CRNH-Auvergne, TSA 50400, 28 place Henri Dunant, 63000 Clermont-Ferrand Cedex 1, France
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Chen Q, Yang H, Zhu X, Xiong S, Chi H, Xu W. Integrative Analysis of the Doxorubicin-Associated LncRNA-mRNA Network Identifies Chemoresistance-Associated lnc-TRDMT1-5 as a Biomarker of Breast Cancer Progression. Front Genet 2020; 11:566. [PMID: 32547604 PMCID: PMC7272716 DOI: 10.3389/fgene.2020.00566] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 05/11/2020] [Indexed: 12/18/2022] Open
Abstract
Increasing evidence has revealed close relationships between long non-coding RNAs (lncRNAs) and chemoresistance in multiple types of tumors; however, functional lncRNAs in breast cancer (BC) have not been completely identified. In this study, we aimed to identify novel lncRNAs that might play critical roles in doxorubicn resistance, which could reveal potential biomarkers of BC. Using a BC dataset (GSE81971), we identified 452 lncRNAs that were upregulated and 659 that were downregulated; furthermore, there were 1896 differentially expressed mRNAs, of which 1137 were upregulated and 758 were downregulated in MCF-7/ADR cells compared with the expression in MCF-7 cells. We constructed an lncRNA–mRNA network by integrating probe reannotation and regulatory interactions. To elucidate the key lncRNAs in BC, we further analyzed dysregulated lncRNA–mRNA crosstalk, and six candidate lncRNAs (lnc-TRDMT1-5, ZNF667-AS1, lnc-MPPE1-13, DSCAM-AS1:5, DSCAM-AS1:2, and lnc-CFI-3) were identified. Notably, the expression level of lnc-TRDMT1-5 was significantly upregulated in resistant cells compared with sensitive cells, and its levels were increased in BC tissues compared with adjacent tissues. Levels were positively associated with estrogen receptor (ER) and human epidermal growth factor receptor 2 (HER2) expression levels. High expression of lnc-TRDMT1-5 predicted poor prognosis in ER-positve and HER2-positive BC patients, especially in patients with chemoresistance. Bioinformatic and functional analysis revealed that lnc-TRDMT1-5 was involved in many crucial pathways in cancer, such as the PI3K/AKT and Wnt signaling pathways. Subcellular localization predicted that lnc-TRDMT1-5 was located in the cytoplasm, and the lncRNA–miRNA–mRNA network showed that lnc-TRDMT1-5 might serve as a regulator in BC. Here, our results demonstrated a dysregulated lncRNA–mRNA network that might provide new treatment strategies for chemoresistant BC, and the results identified a new lncRNA, lnc-TRDMT1-5, with oncogenic and prognostic functions in human BC.
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Affiliation(s)
- Qi Chen
- Department of Breast Diseases, Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China.,School of Medicine, Jiangsu University, Zhenjiang, China
| | - Hui Yang
- Department of Breast Diseases, Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Xiaolan Zhu
- Central Laboratory, Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Shangwan Xiong
- Central Laboratory, Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Huamao Chi
- Department of Breast Diseases, Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Wenlin Xu
- Department of Breast Diseases, Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China.,School of Medicine, Jiangsu University, Zhenjiang, China
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Zappavigna S, Cossu AM, Grimaldi A, Bocchetti M, Ferraro GA, Nicoletti GF, Filosa R, Caraglia M. Anti-Inflammatory Drugs as Anticancer Agents. Int J Mol Sci 2020; 21:ijms21072605. [PMID: 32283655 PMCID: PMC7177823 DOI: 10.3390/ijms21072605] [Citation(s) in RCA: 180] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/06/2020] [Accepted: 04/07/2020] [Indexed: 02/07/2023] Open
Abstract
Inflammation is strictly associated with cancer and plays a key role in tumor development and progression. Several epidemiological studies have demonstrated that inflammation can predispose to tumors, therefore targeting inflammation and the molecules involved in the inflammatory process could represent a good strategy for cancer prevention and therapy. In the past, several clinical studies have demonstrated that many anti-inflammatory agents, including non-steroidal anti-inflammatory drugs (NSAIDs), are able to interfere with the tumor microenvironment by reducing cell migration and increasing apoptosis and chemo-sensitivity. This review focuses on the link between inflammation and cancer by describing the anti-inflammatory agents used in cancer therapy, and their mechanisms of action, emphasizing the use of novel anti-inflammatory agents with significant anticancer activity.
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Affiliation(s)
- Silvia Zappavigna
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (S.Z.); (A.M.C.); (A.G.); (M.B.); (M.C.)
| | - Alessia Maria Cossu
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (S.Z.); (A.M.C.); (A.G.); (M.B.); (M.C.)
- Biogem Scarl, Institute of Genetic Research, Laboratory of Molecular and Precision Oncology, 83031 Ariano Irpino, Italy
| | - Anna Grimaldi
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (S.Z.); (A.M.C.); (A.G.); (M.B.); (M.C.)
| | - Marco Bocchetti
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (S.Z.); (A.M.C.); (A.G.); (M.B.); (M.C.)
- Biogem Scarl, Institute of Genetic Research, Laboratory of Molecular and Precision Oncology, 83031 Ariano Irpino, Italy
| | - Giuseppe Andrea Ferraro
- Multidisciplinary Department of Medical and Dental Specialties, University of Campania, “Luigi Vanvitelli”, Plastic Surgery Unit, 80138 Naples, Italy; (G.A.F.); (G.F.N.)
| | - Giovanni Francesco Nicoletti
- Multidisciplinary Department of Medical and Dental Specialties, University of Campania, “Luigi Vanvitelli”, Plastic Surgery Unit, 80138 Naples, Italy; (G.A.F.); (G.F.N.)
| | - Rosanna Filosa
- Department of Science and Technology, University of Sannio, 82100 Benevento, Italy
- Consorzio Sannio Tech-AMP Biotec, 82030 Apollosa, Italy
- Correspondence:
| | - Michele Caraglia
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy; (S.Z.); (A.M.C.); (A.G.); (M.B.); (M.C.)
- Biogem Scarl, Institute of Genetic Research, Laboratory of Molecular and Precision Oncology, 83031 Ariano Irpino, Italy
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Li J, Hu WX, Luo SQ, Xiong DH, Sun S, Wang YP, Bu XF, Liu J, Hu J. Promoter methylation induced epigenetic silencing of DAZAP2, a downstream effector of p38/MAPK pathway, in multiple myeloma cells. Cell Signal 2019; 60:136-145. [PMID: 31034872 DOI: 10.1016/j.cellsig.2019.04.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 04/22/2019] [Accepted: 04/25/2019] [Indexed: 02/02/2023]
Abstract
Multiple myeloma (MM) is hematological malignancy characterized by clonal proliferation of malignant plasma cells in the bone marrow environment. Previously, we identified DAZAP2 as a candidate cancer suppressor gene, the downregulation of which is regulated by its own promoter methylation status. In the current study, we analyzed the DAZAP2 promoter in MM cell lines KM3, MM.1S, OPM-2, and ARH77 by bisulfite genomic sequencing assay. We identified the binding site for transcription factor cyclic adenosine monophosphate response element binding (CREB) in the DAZAP2 promoter CpG2, and we found that hypermethylation of the CREB binding motif in the DAZAP2 promoter is responsible for the reduced DAZAP2 expression in MM cells. Later we checked the p38/MAPK signaling cascade, which is reported to regulate expression and function of CREB. Our results showed that the p38/MAPK signaling pathway drives the expression of DAZAP2 by phosphorylation of CREB, and hypermethylation of CREB binding motif in DAZAP2 promoter can inhibit binding of CREB to the latter, thus downregulating DAZAP2 expression. Moreover, treating the MM cells with 5-aza-2' deoxycytidine to demethylate DAZAP2 promoter restored the binding of CREB to its binding motif, and thus upregulated DAZAP2 expression. Our results not only identified DAZAP2 as a new downstream target of p38/MAPK/CREB signaling cascade, but we also clarified that the downregulation of DAZAP2 in MM cells is caused by hypermethylation of CREB binding motif in its own promoter region, which implies that demethylation of DAZAP2 promoter can be a novel therapeutic strategy for MM treatment.
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Affiliation(s)
- Jiang Li
- Molecular Biology Research Center, School of Life Science, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China
| | - Wei-Xin Hu
- Molecular Biology Research Center, School of Life Science, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China
| | - Sai-Qun Luo
- Molecular Biology Research Center, School of Life Science, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China
| | - De-Hui Xiong
- Molecular Biology Research Center, School of Life Science, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China
| | - Shuming Sun
- Molecular Biology Research Center, School of Life Science, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China
| | - Yan-Peng Wang
- Molecular Biology Research Center, School of Life Science, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China
| | - Xiu-Fen Bu
- Molecular Biology Research Center, School of Life Science, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China
| | - Jing Liu
- Molecular Biology Research Center, School of Life Science, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China.
| | - Jingping Hu
- Molecular Biology Research Center, School of Life Science, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China.
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Howard EW, Yang X. microRNA Regulation in Estrogen Receptor-Positive Breast Cancer and Endocrine Therapy. Biol Proced Online 2018; 20:17. [PMID: 30214383 PMCID: PMC6134714 DOI: 10.1186/s12575-018-0082-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 08/29/2018] [Indexed: 02/07/2023] Open
Abstract
As de novo and acquired resistance to standard first line endocrine therapies is a growing clinical challenge for estrogen receptor-positive (ER+) breast cancer patients, understanding the mechanisms of resistance is critical to develop novel therapeutic strategies to prevent therapeutic resistance and improve patient outcomes. The widespread post-transcriptional regulatory role that microRNAs (miRNAs) can have on various oncogenic pathways has been well-documented. In particular, several miRNAs are reported to suppress ERα expression via direct binding with the 3’ UTR of ESR1 mRNA, which can confer resistance to estrogen/ERα-targeted therapies. In turn, estrogen/ERα activation can modulate miRNA expression, which may contribute to ER+ breast carcinogenesis. Given the reported oncogenic and tumor suppressor functions of miRNAs in ER+ breast cancer, the targeted regulation of specific miRNAs is emerging as a promising strategy to treat ER+ breast cancer and significantly improve patient responsiveness to endocrine therapies. In this review, we highlight the major miRNA-ER regulatory mechanisms in context with ER+ breast carcinogenesis, as well as the critical miRNAs that contribute to endocrine therapy resistance or sensitivity. Collectively, this comprehensive review of the current literature sheds light on the clinical applications and challenges associated with miRNA regulatory mechanisms and novel miRNA targets that may have translational value as potential therapeutics for the treatment of ER+ breast cancer.
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Affiliation(s)
- Erin W Howard
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, North Carolina Research Campus, 500 Laureate Way, NRI 4301, Kannapolis, North Carolina 28081 USA
| | - Xiaohe Yang
- Julius L. Chambers Biomedical/Biotechnology Research Institute, Department of Biological and Biomedical Sciences, North Carolina Central University, North Carolina Research Campus, 500 Laureate Way, NRI 4301, Kannapolis, North Carolina 28081 USA
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Wang Y, Yan L, Zhang L, Xu H, Chen T, Li Y, Wang H, Chen S, Wang W, Chen C, Yang Q. NT21MP negatively regulates paclitaxel-resistant cells by targeting miR‑155‑3p and miR‑155-5p via the CXCR4 pathway in breast cancer. Int J Oncol 2018; 53:1043-1054. [PMID: 30015868 PMCID: PMC6065429 DOI: 10.3892/ijo.2018.4477] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 06/19/2018] [Indexed: 02/07/2023] Open
Abstract
Evidence has shown that microRNAs (miRNAs) are vital in cell growth, migration, and invasion by inhibiting their target genes. A previous study demonstrated that miRNA (miR)-155-3p and miR-155-5p exerted opposite effects on cell proliferation, apoptosis, migration and invasion in breast cancer cell lines. An miRNA microarray was used to show that miR-155-3p was downregulated whereas miR-155-5p was upregulated in paclitaxel-resistant (PR) cells compared with parental breast cancer cells. However, the role of miR-155 in breast cancer cell invasion and metastasis remains to be elucidated. A 21-residue peptide derived from the viral macrophage inflammatory protein II (NT21MP), competes with the ligand of CXC chemokine receptor 4 (CXCR4) and its ligand stromal cell-derived factor-1α, inducing cell apoptosis in breast cancer. The present study aimed to identify the underlying mechanism of action of miR-155-3p/5p and NT21MP in PR breast cancer cells. Quantitative polymerase chain reaction, western blotting, wound-healing, cell cycle and apoptosis assays, and Cell Counting kit-8 assay were used to achieve this goal. The combined overexpression of miR-155-3p with NT21MP decreased the migration and invasion ability and increased the number of apoptotic and arrested cells in the G0/G1 phase transition in vitro. The knockdown of miR-155-5p combined with NT21MP had a similar effect on PR breast cancer cells. Furthermore, the ectopic expression of their target gene myeloid differentiation primary response gene 88 (MYD88) or tumor protein 53-induced nuclear protein 1 (TP53INP1) combined with NT21MP enhanced the sensitivity of the breast cancer cells to paclitaxel. Taken together, these findings suggested that miR-155-3p/5p and their target genes MYD88 and TP53INP1 may serve as novel biomarkers for NT21MP therapy through the CXCR4 pathway for improving sensitivity to paclitaxel in breast cancer.
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Affiliation(s)
- Yueyue Wang
- Anhui Province Key Laboratory of Translational Cancer Research, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Lei Yan
- Anhui Province Key Laboratory of Translational Cancer Research, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Lingyu Zhang
- Anhui Province Key Laboratory of Translational Cancer Research, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Henan Xu
- Department of Biotechnology, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Tiantian Chen
- Anhui Province Key Laboratory of Translational Cancer Research, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Yu Li
- Department of Biotechnology, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Haifeng Wang
- Anhui Province Key Laboratory of Translational Cancer Research, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Sulian Chen
- Anhui Province Key Laboratory of Translational Cancer Research, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Wenrui Wang
- Department of Biotechnology, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Changjie Chen
- Department of Biochemistry and Molecular Biology, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Qingling Yang
- Department of Biochemistry and Molecular Biology, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
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10
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Patra P, Izawa T, Pena-Castillo L. REPA: Applying Pathway Analysis to Genome-Wide Transcription Factor Binding Data. IEEE/ACM TRANSACTIONS ON COMPUTATIONAL BIOLOGY AND BIOINFORMATICS 2018; 15:1270-1283. [PMID: 27019499 DOI: 10.1109/tcbb.2015.2453948] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Pathway analysis has been extensively applied to aid in the interpretation of the results of genome-wide transcription profiling studies, and has been shown to successfully find associations between the biological phenomena under study and biological pathways. There are two widely used approaches of pathway analysis: over-representation analysis, and gene set analysis. Recently genome-wide transcription factor binding data has become widely available allowing for the application of pathway analysis to this type of data. In this work, we developed regulatory enrichment pathway analysis (REPA) to apply gene set analysis to genome-wide transcription factor binding data to infer associations between transcription factors and biological pathways. We used the transcription factor binding data generated by the ENCODE project, and gene sets from the Molecular Signatures and KEGG databases. Our results showed that 54 percent of the predictions examined have literature support and that REPA's recall is roughly 54 percent. This level of precision is promising as several of REPA's predictions are expected to be novel and can be used to guide new research avenues. In addition, the results of our case studies showed that REPA enhances the interpretation of genome-wide transcription profiling studies by suggesting putative regulators behind the observed transcriptional responses.
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11
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Zhang P, Wang J, Lang H, Wang W, Liu X, Liu H, Tan C, Li X, Zhao Y, Wu X. Knockdown of CREB1 promotes apoptosis and decreases estradiol synthesis in mouse granulosa cells. Biomed Pharmacother 2018; 105:1141-1146. [PMID: 30021350 DOI: 10.1016/j.biopha.2018.06.101] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 06/18/2018] [Accepted: 06/18/2018] [Indexed: 12/17/2022] Open
Abstract
Cyclic AMP response element-binding protein 1 (CREB1), a member of the CREB family, is known to be involved in follicular growth, ovulation, and ovarian disease. However, the physiological function of CREB1 in mouse granulosa cells (mGCs) remains lagerly unknown. The aim of this study was to determine the role of CREB1 in mGCs by knocking down CREB1 expression. CREB1 knock-down in mGCs at the mRNA and protein levels, was confirmed by quantitative real-time polymerase chain reaction and western blot. Results of enzyme linked immunosorbent assay revealed that CREB1 knockdown significantly decreased the concentrations of estradiol (E2) and progesterone (P4) in mGCs. Furthermore, the CREB1 knockdown in mGCs promoted cell proliferation and apoptosis, and arrested the cell cycle in S-phase. To elucidate the regulatory mechanism underlying the effects of CREB1 knockdown on steroid synthesis, cell cycle, and apoptosis, we measured the protein expression levels of several related genes in mGCs knocked down CREB1. When CREB1 was knocked down, the expression of Cyp1b1 and Cyp19a1, which encode steroidogenic enzymes, was down-regulated; the expression of the cell cycle factors CyclinA1, CyclinB1, and CyclinD2 were significantly decreased. Among apoptosis-related genes, Bcl-2 was down-regulated, whereas Bax and cleaved Caspase3 were upregulated. Moreover, CREB1 knockdown significantly decreased expression level of Has2, Ptgs2, and Igfbp4, which are essential genes for folliculogenesis in mGCs. Taken together, these findings suggested that CREB1 might be a key regulator of mGCs through regulating steroid synthesis, cell proliferation, cell cycle, apoptosis, and other regulators of folliculogenesis.
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Affiliation(s)
- Pengju Zhang
- Institute of Animal Sciences, Jilin Academy of Agricultural Sciences, #1363 Shengtai Street, Changchun 130124, Jilin Province, PR China
| | - Jun Wang
- College of Animal Science and Technology, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin Province, PR China
| | - Hongyan Lang
- Institute of Animal Sciences, Jilin Academy of Agricultural Sciences, #1363 Shengtai Street, Changchun 130124, Jilin Province, PR China
| | - Weixia Wang
- Institute of Animal Sciences, Jilin Academy of Agricultural Sciences, #1363 Shengtai Street, Changchun 130124, Jilin Province, PR China
| | - Xiaohui Liu
- Institute of Animal Sciences, Jilin Academy of Agricultural Sciences, #1363 Shengtai Street, Changchun 130124, Jilin Province, PR China
| | - Haiyan Liu
- Institute of Animal Sciences, Jilin Academy of Agricultural Sciences, #1363 Shengtai Street, Changchun 130124, Jilin Province, PR China
| | - Chengcheng Tan
- Institute of Animal Sciences, Jilin Academy of Agricultural Sciences, #1363 Shengtai Street, Changchun 130124, Jilin Province, PR China
| | - Xintao Li
- Institute of Animal Sciences, Jilin Academy of Agricultural Sciences, #1363 Shengtai Street, Changchun 130124, Jilin Province, PR China.
| | - Yumin Zhao
- Institute of Animal Sciences, Jilin Academy of Agricultural Sciences, #1363 Shengtai Street, Changchun 130124, Jilin Province, PR China.
| | - Xinghong Wu
- Institute of Animal Sciences, Jilin Academy of Agricultural Sciences, #1363 Shengtai Street, Changchun 130124, Jilin Province, PR China.
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12
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Masarwi M, Shamir R, Phillip M, Gat-Yablonski G. Leptin stimulates aromatase in the growth plate: limiting catch-up growth efficiency. J Endocrinol 2018; 237:229-242. [PMID: 29615477 DOI: 10.1530/joe-18-0028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Accepted: 04/03/2018] [Indexed: 12/15/2022]
Abstract
Catch-up growth (CUG) in childhood is defined as periods of growth acceleration, after the resolution of growth attenuation causes, bringing the children back to their original growth trajectory. Sometimes, however, CUG is incomplete, leading to permanent growth deficit and short stature. The aim of this study was to investigate the mechanisms that limit nutritional-CUG. Specifically, we focused on the crosstalk between leptin, increased by re-feeding, and sex hormones, which increase with age. In vivo studies were performed in young male Sprague Dawley rats fed ad libitum or subjected to 10/36 days of 40% food restriction followed by 90-120 days of re-feeding. In vitro studies were performed on ATDC5 cells. Analyses of mRNA and protein levels were done using qPCR and Western blot, respectively. CUG was complete in body weight and humerus length in animals that were food-restricted for 10 days but not for those food-restricted for 36 days. In vitro studies showed that leptin significantly increased aromatase gene expression and protein level as well as the expression of estrogen and leptin receptors in a dose- and time-dependent manner. The effect of leptin on aromatase was direct and was mediated through the MAPK/Erk, STAT3 and PI3K pathways. The crosstalk between leptin and aromatase in the growth plate suggests that re-feeding during puberty may lead to increased estrogen level and activity, and consequently, irreversible premature epiphyseal growth plate closure. These results may have important implications for the development of novel treatment strategies for short stature in children.
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Affiliation(s)
- Majdi Masarwi
- Sackler Faculty of MedicineTel Aviv University, Tel Aviv, Israel
- Felsenstein Medical Research CenterPetach Tikva, Israel
| | - Raanan Shamir
- Sackler Faculty of MedicineTel Aviv University, Tel Aviv, Israel
- Felsenstein Medical Research CenterPetach Tikva, Israel
- Institute of GastroenterologyNutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
| | - Moshe Phillip
- Sackler Faculty of MedicineTel Aviv University, Tel Aviv, Israel
- Felsenstein Medical Research CenterPetach Tikva, Israel
- The Jesse Z and Sara Lea Shafer Institute for Endocrinology and DiabetesNational Center for Childhood Diabetes, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
| | - Galia Gat-Yablonski
- Sackler Faculty of MedicineTel Aviv University, Tel Aviv, Israel
- Felsenstein Medical Research CenterPetach Tikva, Israel
- The Jesse Z and Sara Lea Shafer Institute for Endocrinology and DiabetesNational Center for Childhood Diabetes, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
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13
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Clark BJ, Prough RA, Klinge CM. Mechanisms of Action of Dehydroepiandrosterone. VITAMINS AND HORMONES 2018; 108:29-73. [PMID: 30029731 DOI: 10.1016/bs.vh.2018.02.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Dehydroepiandrosterone (3β-hydroxy-5-androsten-17-one, DHEA) and its sulfated metabolite DHEA-S are the most abundant steroids in circulation and decline with age. Rodent studies have shown that DHEA has a wide variety of effects on liver, kidney, adipose, reproductive tissues, and central nervous system/neuronal function. The mechanisms by which DHEA and DHEA-S impart their physiological effects may be direct actions on plasma membrane receptors, including a DHEA-specific, G-protein-coupled receptor in endothelial cells; various neuroreceptors, e.g., aminobutyric-acid-type A, N-methyl-d-aspartate (NMDA), and sigma-1 (S1R) receptors; by binding steroid receptors: androgen and estrogen receptors (ARs, ERα, or ERβ); or by their metabolism to more potent sex steroid hormones, e.g., testosterone, dihydrotestosterone, and estradiol, which bind with higher affinity to ARs and ERs. DHEA inhibits voltage-gated T-type calcium channels. DHEA activates peroxisome proliferator-activated receptor (PPARα) and CAR by a mechanism apparently involving PP2A, a protein phosphatase dephosphorylating PPARα and CAR to activate their transcriptional activity. We review our recent study showing DHEA activated GPER1 (G-protein-coupled estrogen receptor 1) in HepG2 cells to stimulate miR-21 transcription. This chapter reviews some of the physiological, biochemical, and molecular mechanisms of DHEA and DHEA-S activity.
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Affiliation(s)
- Barbara J Clark
- Department of Biochemistry and Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY, United States
| | - Russell A Prough
- Department of Biochemistry and Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY, United States
| | - Carolyn M Klinge
- Department of Biochemistry and Molecular Genetics, Center for Genetics and Molecular Medicine, University of Louisville School of Medicine, Louisville, KY, United States.
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14
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Chang CC, Zhang C, Zhang Q, Sahin O, Wang H, Xu J, Xiao Y, Zhang J, Rehman SK, Li P, Hung MC, Behbod F, Yu D. Upregulation of lactate dehydrogenase a by 14-3-3ζ leads to increased glycolysis critical for breast cancer initiation and progression. Oncotarget 2018; 7:35270-83. [PMID: 27150057 PMCID: PMC5085227 DOI: 10.18632/oncotarget.9136] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 04/16/2016] [Indexed: 12/14/2022] Open
Abstract
Metabolic reprogramming is a hallmark of cancer. Elevated glycolysis in cancer cells switches the cellular metabolic flux to produce more biological building blocks, thereby sustaining rapid proliferation. Recently, new evidence has emerged that metabolic dysregulation may occur at early-stages of neoplasia and critically contribute to cancer initiation. Here, our bioinformatics analysis of microarray data from early-stages breast neoplastic lesions revealed that 14-3-3ζ expression is strongly correlated with the expression of canonical glycolytic genes, particularly lactate dehydrogenase A (LDHA). Experimentally, increasing 14-3-3ζ expression in human mammary epithelial cells (hMECs) up-regulated LDHA expression, elevated glycolytic activity, and promoted early transformation. Knockdown of LDHA in the 14-3-3ζ-overexpressing hMECs significantly reduced glycolytic activity and inhibited transformation. Mechanistically, 14-3-3ζ overexpression activates the MEK-ERK-CREB axis, which subsequently up-regulates LDHA. In vivo, inhibiting the activated the MEK/ERK pathway in 14-3-3ζ-overexpressing hMEC-derived MCF10DCIS.COM lesions led to effective inhibition of tumor growth. Therefore, targeting the MEK/ERK pathway could be an effective strategy for intervention of 14-3-3ζ-overexpressing early breast lesions. Together, our data demonstrate that overexpression of 14-3-3ζ in early stage pre-cancerous breast epithelial cells may trigger an elevated glycolysis and transcriptionally up-regulating LDHA, thereby contributes to human breast cancer initiation.
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Affiliation(s)
- Chia-Chi Chang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.,Cancer Biology Program, Graduate School of Biomedical Sciences at Houston, Houston, TX 77030, USA
| | - Chenyu Zhang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Qingling Zhang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ozgur Sahin
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Hai Wang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jia Xu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yi Xiao
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jian Zhang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Sumaiyah K Rehman
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ping Li
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.,Cancer Biology Program, Graduate School of Biomedical Sciences at Houston, Houston, TX 77030, USA
| | - Fariba Behbod
- Department of Pathology and Laboratory Medicine, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Dihua Yu
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.,Cancer Biology Program, Graduate School of Biomedical Sciences at Houston, Houston, TX 77030, USA
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15
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Steven A, Seliger B. Control of CREB expression in tumors: from molecular mechanisms and signal transduction pathways to therapeutic target. Oncotarget 2018; 7:35454-65. [PMID: 26934558 PMCID: PMC5085243 DOI: 10.18632/oncotarget.7721] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 01/26/2016] [Indexed: 12/11/2022] Open
Abstract
The cyclic AMP response element binding (CREB) protein has pleiotropic activities in physiologic processes. Due to its central position downstream of many growth signaling pathways CREB has the ability to influence cell survival, growth and differentiation of normal, but also of tumor cells suggesting an oncogenic potential of CREB. Indeed, increased CREB expression and activation is associated with tumor progression, chemotherapy resistance and reduced patients' survival. We summarize here the different cellular functions of CREB in tumors of distinct histology as well as its use as potential prognostic marker. In addition, the underlying molecular mechanisms to achieve constitutive activation of CREB including structural alterations, such as gene amplification and chromosomal translocation, and deregulation, which could occur at the transcriptional, post-transcriptional and post-translational level, will be described. Since downregulation of CREB by different strategies resulted in inhibition of cell proliferation, invasion and induction of apoptosis, the role of CREB as a promising target for cancer therapy will be also discussed.
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Affiliation(s)
- André Steven
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Barbara Seliger
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
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16
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Lu F, Zheng Y, Donkor PO, Zou P, Mu P. Downregulation of CREB Promotes Cell Proliferation by Mediating G1/S Phase Transition in Hodgkin Lymphoma. Oncol Res 2017; 24:171-9. [PMID: 27458098 PMCID: PMC7838744 DOI: 10.3727/096504016x14634208142987] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
The cyclic-AMP response element-binding protein (CREB), a well-known nuclear transcription factor, has been shown to play an essential role in many cellular processes, including differentiation, cell survival, and cell proliferation, by regulating the expression of downstream genes. Recently, increased expression of CREB was frequently found in various tumors, indicating that CREB is implicated in the process of tumorigenesis. However, the effects of CREB on Hodgkin lymphoma (HL) remain unknown. To clarify the role of CREB in HL, we performed knockdown experiments in HL. We found that downregulation of CREB by short hairpin RNA (shRNA) resulted in enhancement of cell proliferation and promotion of G1/S phase transition, and these effects can be rescued by expression of shRNA-resistant CREB. Meanwhile, the expression level of cell cycle-related proteins, such as cyclin D1, cyclin E1, cyclin-dependent kinase 2 (CDK2), and CDK4, was elevated in response to depletion of CREB. Furthermore, we performed chromatin immunoprecipitation (ChIP) assay and confirmed that CREB directly bound to the promoter regions of these genes, which consequently contributed to the regulation of cell cycle. Consistent with our results, a clinical database showed that high expression of CREB correlates with favorable prognosis in B-cell lymphoma patients, which is totally different from the function of CREB in other cancers such as colorectal cancer, acute myeloid leukemia, and some endocrine cancers. Taken together, all of these features of CREB in HL strongly support its role as a tumor suppressor gene that can decelerate cell proliferation by inhibiting the expression of several cell cycle-related genes. Our results provide new evidence for prognosis prediction of HL and a promising therapeutic strategy for HL patients.
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Affiliation(s)
- Fangjin Lu
- Tianjin State Key Laboratory of Modern Chinese Medicine, School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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17
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Miklos W, Heffeter P, Pirker C, Hager S, Kowol CR, van Schoonhoven S, Stojanovic M, Keppler BK, Berger W. Loss of phosphodiesterase 4D mediates acquired triapine resistance via Epac-Rap1-Integrin signaling. Oncotarget 2016; 7:84556-84574. [PMID: 27602951 PMCID: PMC5356681 DOI: 10.18632/oncotarget.11821] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 08/24/2016] [Indexed: 12/27/2022] Open
Abstract
Triapine, an anticancer thiosemicarbazone, is currently under clinical investigation. Whereas promising results were obtained in hematological diseases, trials in solid tumors widely failed. To understand mechanisms causing triapine insensitivity, we have analysed genomic alterations in a triapine-resistant SW480 subline (SW480/tria). Only one distinct genomic loss was observed specifically in SW480/tria cells affecting the phosphodiesterase 4D (PDE4D) gene locus. Accordingly, pharmacological inhibition of PDE4D resulted in significant triapine resistance in SW480 cells. Hence, we concluded that enhanced cyclic AMP levels might confer protection against triapine. Indeed, hyperactivation of both major downstream pathways, namely the protein kinase A (PKA)-cAMP response element-binding protein (Creb) and the exchange protein activated by cAMP (Epac)-Ras-related protein 1 (Rap1) signaling axes, was observed in SW480/tria cells. Unexpectedly, inhibition of PKA did not re-sensitize SW480/tria cells against triapine. In contrast, Epac activation resulted in distinct triapine resistance in SW480 cells. Conversely, knock-down of Epac expression and pharmacological inhibition of Rap1 re-sensitized SW480/tria cells against triapine. Rap1 is a well-known regulator of integrins. Accordingly, SW480/tria cells displayed enhanced plasma membrane expression of several integrin subunits, enhanced adhesion especially to RGD-containing matrix components, and bolstered activation/expression of the integrin downstream effectors Src and RhoA/Rac. Accordingly, integrin and Src inhibition resulted in potent triapine re-sensitization especially of SW480/tria cells. In summary, we describe for the first time integrin activation based on cAMP-Epac-Rap1 signaling as acquired drug resistance mechanism. combinations of triapine with inhibitors of several steps in this resistance cascade might be feasible strategies to overcome triapine insensitivity of solid tumors.
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Affiliation(s)
- Walter Miklos
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, A-1090 Vienna, Austria
| | - Petra Heffeter
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, A-1090 Vienna, Austria
- Research Platform “Translational Cancer Therapy Research”, University Vienna and Medical University Vienna, Vienna, Austria
| | - Christine Pirker
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, A-1090 Vienna, Austria
| | - Sonja Hager
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, A-1090 Vienna, Austria
| | - Christian R. Kowol
- Institute of Inorganic Chemistry, University of Vienna, A-1090 Vienna, Austria
- Research Platform “Translational Cancer Therapy Research”, University Vienna and Medical University Vienna, Vienna, Austria
| | - Sushilla van Schoonhoven
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, A-1090 Vienna, Austria
| | - Mirjana Stojanovic
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, A-1090 Vienna, Austria
| | - Bernhard K. Keppler
- Institute of Inorganic Chemistry, University of Vienna, A-1090 Vienna, Austria
- Research Platform “Translational Cancer Therapy Research”, University Vienna and Medical University Vienna, Vienna, Austria
| | - Walter Berger
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, A-1090 Vienna, Austria
- Research Platform “Translational Cancer Therapy Research”, University Vienna and Medical University Vienna, Vienna, Austria
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18
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Downregulation of microRNA-27b-3p enhances tamoxifen resistance in breast cancer by increasing NR5A2 and CREB1 expression. Cell Death Dis 2016; 7:e2454. [PMID: 27809310 PMCID: PMC5260890 DOI: 10.1038/cddis.2016.361] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 08/09/2016] [Accepted: 10/03/2016] [Indexed: 02/07/2023]
Abstract
Estrogen-dependent breast cancer is often treated with the aromatase inhibitors or estrogen receptor (ER) antagonists. Tamoxifen as a major ER antagonist is usually used to treat those patients with ERα-positive breast cancer. However, a majority of patients with ERα positive fail to respond to tamoxifen due to the presence of intrinsic or acquired resistance to the drug. Altered expression and functions of microRNAs (miRNAs) have been reportedly associated with tamoxifen resistance. In this study, we investigated the role of miR-27b-3p in resistance of breast cancer to tamoxifen. MiR-27b-3p levels were remarkably reduced in the tamoxifen-resistant breast cancer cells compared with their parental cells. In addition, miR-27b-3p was also significantly downregulated in breast tumor tissues relative to adjacent non-tumor tissues. Moreover, the expression levels of miR-27b-3p were lower in the breast cancer tissues from tamoxifen-resistant patients compared with that from untreated-tamoxifen patients. Notably, tamoxifen repressed miR-27b-3p expression, whereas estrogen induced miR-27b-3p expression in breast cancer cells. Besides, we provided experimental evidences that miR-27b-3p enhances the sensitivity of breast cancer cells to tamoxifen in vitro and in vivo models. More importantly, we validated that miR-27b-3p directly targeted and inhibited the expression of nuclear receptor subfamily 5 group A member 2 (NR5A2) and cAMP-response element binding protein 1 (CREB1) and therefore augmented tamoxifen-induced cytotoxicity in breast cancer. Lastly, miR-27b-3p levels were found to be significantly negatively correlated with both NR5A2 and CREB1 levels in breast cancer tissues. Our findings provided further evidence that miR-27b-3p might be considered as a novel and potential target for the diagnosis and treatment of tamoxifen-resistant breast cancer.
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19
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Activation of PI3K/Akt/mTOR signaling in the tumor stroma drives endocrine therapy-dependent breast tumor regression. Oncotarget 2016; 6:22081-97. [PMID: 26098779 PMCID: PMC4673148 DOI: 10.18632/oncotarget.4203] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 05/27/2015] [Indexed: 12/21/2022] Open
Abstract
Improved efficacy of neoadjuvant endocrine-targeting therapies in luminal breast carcinomas could be achieved with optimal use of pathway targeting agents. In a mouse model of ductal breast carcinoma we identify a tumor regressive stromal reaction that is induced by neoadjuvant endocrine therapy. This reparative reaction is characterized by tumor neovascularization accompanied by infiltration of immune cells and carcinoma-associated fibroblasts that stain for phosphorylated ribosomal protein S6 (pS6), downstream the PI3K/Akt/mTOR pathway. While tumor variants with higher PI3K/Akt/mTOR activity respond well to a combination of endocrine and PI3K/Akt/mTOR inhibitors, tumor variants with lower PI3K/Akt/mTOR activity respond more poorly to the combination therapy than to the endocrine therapy alone, associated with inhibition of stromal pS6 and the reparative reaction. In human breast cancer xenografts we confirm that such differential sensitivity to therapy is primarily determined by the level of PI3K/Akt/mTOR in tumor cells. We further show that the clinical response of breast cancer patients undergoing neoadjuvant endocrine therapy is associated with the reparative stromal reaction. We conclude that tumor level and localization of pS6 are associated with therapeutic response in breast cancer and represent biomarkers to distinguish which tumors will benefit from the incorporation of PI3K/Akt/mTOR inhibitors with neoadjuvant endocrine therapy.
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20
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An in vitro model for the development of acquired tamoxifen resistance. Cell Biol Toxicol 2016; 32:563-581. [DOI: 10.1007/s10565-016-9355-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 07/15/2016] [Indexed: 01/10/2023]
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21
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Vaziri-Gohar A, Houston KD. GPER1-mediated IGFBP-1 induction modulates IGF-1-dependent signaling in tamoxifen-treated breast cancer cells. Mol Cell Endocrinol 2016; 422:160-171. [PMID: 26690777 PMCID: PMC4742395 DOI: 10.1016/j.mce.2015.11.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/05/2015] [Accepted: 11/26/2015] [Indexed: 01/10/2023]
Abstract
Tamoxifen, a selective estrogen receptor modulator, is a commonly prescribed adjuvant therapy for estrogen receptor-α (ERα)-positive breast cancer patients. To determine if extracellular factors contribute to the modulation of IGF-1 signaling after tamoxifen treatment, MCF-7 cells were treated with IGF-1 in conditioned medium (CM) obtained from 4-OHT-treated MCF-7 cells and the accumulation of phospho-Akt (S473) was measured. CM inhibited IGF-1-dependent cell signaling and suggesting the involvement of extracellular factors (ie. IGFBPs). A significant increase in IGFBP-1 mRNA and extracellular IGFBP-1 protein was observed in 4-OHT-treated MCF-7 cells. Knockdown experiments demonstrated that both GPER1 and CREB mediate IGFBP-1 induction. Furthermore, experiments showed that 4-OHT-dependent IGFBP-1 transcription is downstream of GPER1-activation in breast cancer cells. Additionally, neutralization and knockdown experiments demonstrated a role for IGFBP-1 in the observed inhibition of IGF-1 signaling. These results suggested that 4-OHT inhibits IGF-1 signaling via GPER1 and CREB mediated extracellular IGFBP-1 accumulation in breast cancer cells.
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Affiliation(s)
- Ali Vaziri-Gohar
- Molecular Biology Program, New Mexico State University, Las Cruces, NM 88003, USA
| | - Kevin D Houston
- Molecular Biology Program, New Mexico State University, Las Cruces, NM 88003, USA; Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM 88003, USA.
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Grinman DY, Romorini L, Presman DM, Rocha-Viegas L, Coso OA, Davio C, Pecci A. Role of 3'-5'-cyclic adenosine monophosphate on the epidermal growth factor dependent survival in mammary epithelial cells. Mol Cell Endocrinol 2016; 419:259-67. [PMID: 26522133 DOI: 10.1016/j.mce.2015.10.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 09/28/2015] [Accepted: 10/26/2015] [Indexed: 11/16/2022]
Abstract
Epidermal growth factor (EGF) has been suggested to play a key role in the maintenance of epithelial cell survival during lactation. Previously, we demonstrated that EGF dependent activation of PI3K pathway prevents apoptosis in confluent murine HC11 cells cultured under low nutrient conditions. The EGF protective effect is associated with increased levels of the antiapoptotic protein Bcl-XL. Here, we identify the EGF-dependent mechanism involved in cell survival that converges in the regulation of bcl-X expression by activated CREB. EGF induces Bcl-XL expression through activation of a unique bcl-X promoter, the P1; being not only the PI3K/AKT signaling pathway but also the increase in cAMP levels and the concomitant PKA/CREB activation necessary for both bcl-XL upregulation and apoptosis avoidance. Results presented in this work suggest the existence of a novel connection between the EGF receptor and the adenylate cyclase that would have an impact in preventing apoptosis under low nutrient conditions.
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Affiliation(s)
- Diego Y Grinman
- Departamento de Química Biológica, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina; IFIBYNE (UBA-CONICET), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
| | - Leonardo Romorini
- LIAN-CONICET, Fundación para la Lucha contra las Enfermedades Neurodegenerativas de la Infancia, Ruta 9, Km. 52,5, Escobar, B1625XAF, Provincia de Buenos Aires, Argentina
| | - Diego M Presman
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, NIH, Building 41, B602, 41 Library Drive, Bethesda, MD, 20892, USA
| | - Luciana Rocha-Viegas
- Departamento de Fisiología, Biología Molecular y Celular, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina; IFIBYNE (UBA-CONICET), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
| | - Omar A Coso
- Departamento de Fisiología, Biología Molecular y Celular, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina; IFIBYNE (UBA-CONICET), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina
| | - Carlos Davio
- Cátedra de Química Medicinal, Departamento de Farmacología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina; Instituto de Investigaciones Farmacológicas, ININFA-UBA-CONICET, Junin 954, C1113AAD, Ciudad Autónoma de Buenos Aires, Argentina
| | - Adali Pecci
- Departamento de Química Biológica, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina; IFIBYNE (UBA-CONICET), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina.
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23
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Yoda T, Kikuchi K, Miki Y, Onodera Y, Hata S, Takagi K, Nakamura Y, Hirakawa H, Ishida T, Suzuki T, Ohuchi N, Sasano H, McNamara KM. 11β-Prostaglandin F2α, a bioactive metabolite catalyzed by AKR1C3, stimulates prostaglandin F receptor and induces slug expression in breast cancer. Mol Cell Endocrinol 2015; 413:236-47. [PMID: 26170067 DOI: 10.1016/j.mce.2015.07.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 06/30/2015] [Accepted: 07/07/2015] [Indexed: 01/24/2023]
Abstract
Prostaglandins are a group of lipid compounds involved in inflammation and cancer. We focused on PGF2α and its stereoisomer 11β-PGF2α and examined the expression and functions of their cognate receptor (FP receptor) and metabolizing enzymes (AKR1B1 and AKR1C3 respectively) in breast cancer. In immunohistochemical analysis FP receptor status associated with adverse clinical outcome only in the AKR1C3 positive cases. Therefore, we studied FP receptor-mediated functions of 11β-PGF2α using FP receptor expressed MCF-7 cell line (MCF-FP). 11β-PGF2α treatment phosphorylated ERK and CREB and induced Slug expression through FP receptor in MCF-FP, and MCF-FP cells demonstrated decreased chemosensitivity compared to parental controls. Finally, the correlation between FP receptor and Slug was also confirmed immunohistochemically in breast cancer cases. Overall these results indicated that the actions of AKR1C3 can produce FP receptor ligands whose activation results in carcinoma cell survival in breast cancer.
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Affiliation(s)
- Tomomi Yoda
- Department of Pathology, Tohoku University School of Medicine, Sendai, Japan
| | - Kyoko Kikuchi
- Department of Pathology, Tohoku University School of Medicine, Sendai, Japan
| | - Yasuhiro Miki
- Department of Pathology, Tohoku University School of Medicine, Sendai, Japan
| | - Yoshiaki Onodera
- Department of Pathology, Tohoku University School of Medicine, Sendai, Japan
| | - Shuko Hata
- Department of Pathology, Tohoku University School of Medicine, Sendai, Japan
| | - Kiyoshi Takagi
- Department of Pathology and Histotechnology, Tohoku University School of Medicine, Sendai, Japan
| | - Yasuhiro Nakamura
- Department of Pathology, Tohoku University School of Medicine, Sendai, Japan
| | | | - Takanori Ishida
- Department of Surgery, Tohoku University School of Medicine, Sendai, Japan
| | - Takashi Suzuki
- Department of Pathology and Histotechnology, Tohoku University School of Medicine, Sendai, Japan
| | - Noriaki Ohuchi
- Department of Surgery, Tohoku University School of Medicine, Sendai, Japan
| | - Hironobu Sasano
- Department of Pathology, Tohoku University School of Medicine, Sendai, Japan
| | - Keely May McNamara
- Department of Pathology, Tohoku University School of Medicine, Sendai, Japan.
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24
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The p38 MAPK-regulated PKD1/CREB/Bcl-2 pathway contributes to selenite-induced colorectal cancer cell apoptosis in vitro and in vivo. Cancer Lett 2014; 354:189-99. [DOI: 10.1016/j.canlet.2014.08.009] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 08/05/2014] [Accepted: 08/06/2014] [Indexed: 12/20/2022]
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