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Puente J, Laínez N, Dueñas M, Méndez-Vidal MJ, Esteban E, Castellano D, Martinez-Fernández M, Basterretxea L, Juan-Fita MJ, Antón L, León L, Lambea J, Pérez-Valderrama B, Vázquez S, Suarez C, del Muro XG, Gallardo E, Maroto JP, Samaniego ML, Suárez-Paniagua B, Sanz J, Paramio JM. Novel potential predictive markers of sunitinib outcomes in long-term responders versus primary refractory patients with metastatic clear-cell renal cell carcinoma. Oncotarget 2017; 8:30410-30421. [PMID: 28423742 PMCID: PMC5444752 DOI: 10.18632/oncotarget.16494] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 02/24/2017] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Several potential predictive markers of efficacy of targeted agents in patients with metastatic renal cell carcinoma (mRCC) have been identified. Interindividual heterogeneity warrants further investigation. PATIENTS AND METHODS Multicenter, observational, retrospective study in patients with clear-cell mRCC treated with sunitinib. Patients were classified in two groups: long-term responders (LR) (progression-free survival (PFS)≥22 months and at least stable disease), and primary refractory (PR) (progressive disease within 3-months of sunitinib onset). Objectives were to compare baseline clinical factors in both populations and to correlate tumor expression of selected signaling pathways components with sunitinib PFS. RESULTS 123 patients were analyzed (97 LR, 26 PR). In the LR cohort, overall response rate was 79% and median duration of best response was 30 months. Median PFS and overall survival were 43.2 (95% confidence intervals[CI]:37.2-49.3) and 63.5 months (95%CI:55.1-71.9), respectively. At baseline PR patients had a significantly lower proportion of nephrectomies, higher lactate dehydrogenase and platelets levels, lower hemoglobin, shorter time to and higher presence of metastases, and increased Fuhrman grade. Higher levels of HEYL, HEY and HES1 were observed in LR, although only HEYL discriminated populations significantly (AUC[ROC]=0.704; cut-off=34.85). Increased levels of hsa-miR-27b, hsa-miR-23b and hsa-miR-628-5p were also associated with prolonged survival. No statistical significant associations between hsa-miR-23b or hsa-miR-27b and the expression of c-Met were found. CONCLUSIONS Certain mRCC patients treated with sunitinib achieve extremely long-term responses. Favorable baseline hematology values and longer time to metastasis may predict longer PFS. HEYL, hsa-miR-27b, hsa-miR-23b and hsa-miR-628-5p could be potentially used as biomarkers of sunitinib response.
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Affiliation(s)
- Javier Puente
- Medical Oncology Department, Instituto de Investigación Biomédica, Hospital Clínico Universitario San Carlos, Madrid, Spain
| | - Nuria Laínez
- Medical Oncology Department, Complejo Hospitalario de Navarra, Pamplona, Spain
| | - Marta Dueñas
- Molecular Oncology Unit CIEMAT and Instituto Investigación Biomédica, Hospital Universitario 12 de Octubre, Madrid, Spain
- CIBERONC, Spain
| | | | - Emilio Esteban
- Medical Oncology Department, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Daniel Castellano
- CIBERONC, Spain
- Medical Oncology Department, and Instituto Investigación Biomédica, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Mónica Martinez-Fernández
- Molecular Oncology Unit CIEMAT and Instituto Investigación Biomédica, Hospital Universitario 12 de Octubre, Madrid, Spain
- CIBERONC, Spain
| | | | | | - Luis Antón
- Medical Oncology Department, Complejo Hospitalario Universitario de A Coruña, A Coruña, Spain
| | - Luis León
- Promoción e Planificación da Investigación Sanitaria, Axencia de Coñecemento en Saúde, Santiago de Compostela, Spain
| | - Julio Lambea
- Medical Oncology Department, Hospital Clínico de Zaragoza, Zaragoza, Spain
| | | | - Sergio Vázquez
- Medical Oncology Department, Hospital Universitario Lucus Augusti, Lugo, Spain
| | - Cristina Suarez
- Vall d'Hebron Institute of Oncology, Hospital Universitari Vall d' Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Xavier Garcia del Muro
- Medical Oncology Department, Institut Català d'Oncologia, Hospital Duran i Reynals, L'Hospitalet, Barcelona, Spain
| | - Enrique Gallardo
- Medical Oncology Department, Hospital Universitari Parc Taulí, Sabadell, Spain
| | - José Pablo Maroto
- Medical Oncology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - M Luz Samaniego
- Statistical Department, Trial Form Support TFS people, Madrid, Spain
| | | | - Julián Sanz
- Pathology Department, Hospital Clínico Universitario San Carlos, Madrid, Spain
| | - Jesús M. Paramio
- Molecular Oncology Unit CIEMAT and Instituto Investigación Biomédica, Hospital Universitario 12 de Octubre, Madrid, Spain
- CIBERONC, Spain
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Genovese I, Ilari A, Assaraf YG, Fazi F, Colotti G. Not only P-glycoprotein: Amplification of the ABCB1- containing chromosome region 7q21 confers multidrug resistance upon cancer cells by coordinated overexpression of an assortment of resistance-related proteins. Drug Resist Updat 2017; 32:23-46. [DOI: 10.1016/j.drup.2017.10.003] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 10/01/2017] [Accepted: 10/11/2017] [Indexed: 02/07/2023]
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Henriksen TI, Davidsen PK, Pedersen M, Schultz HS, Hansen NS, Larsen TJ, Vaag A, Pedersen BK, Nielsen S, Scheele C. Dysregulation of a novel miR-23b/27b-p53 axis impairs muscle stem cell differentiation of humans with type 2 diabetes. Mol Metab 2017; 6:770-779. [PMID: 28702332 PMCID: PMC5485225 DOI: 10.1016/j.molmet.2017.04.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 04/06/2017] [Accepted: 04/20/2017] [Indexed: 12/25/2022] Open
Abstract
Objective MicroRNAs (miRNAs) are increasingly recognized as fine-tuning regulators of metabolism, and are dysregulated in several disease conditions. With their capacity to rapidly change gene expression, miRNAs are also important regulators of development and cell differentiation. In the current study, we describe an impaired myogenic capacity of muscle stem cells isolated from humans with type 2 diabetes (T2DM) and assess whether this phenotype is regulated by miRNAs. Methods We measured global miRNA expression during in vitro differentiation of muscle stem cells derived from T2DM patients and healthy controls. Results The mir-23b/27b cluster was downregulated in the cells of the patients, and a pro-myogenic effect of these miRNAs was mediated through the p53 pathway, which was concordantly dysregulated in the muscle cells derived from humans with T2DM. Conclusions Our results indicate that we have identified a novel pathway for coordination of myogenesis, the miR-23b/27b-p53 axis that, when dysregulated, potentially contributes to a sustained muscular dysfunction in T2DM. miR-23b and miR-27b are pro-myogenic and are downregulated in T2DM. miR-23b and miR-27b regulate myogenesis through the p53 pathway. The p53 pathway is concordantly dysregulated in T2DM.
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Affiliation(s)
- Tora I. Henriksen
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Copenhagen Denmark
| | - Peter K. Davidsen
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Copenhagen Denmark
- Centre for Computational Biology and Modelling, Institute for Integrative Biology, University of Liverpool, Crown Street, Liverpool, L69 7ZB, UK
| | - Maria Pedersen
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Copenhagen Denmark
| | | | - Ninna S. Hansen
- Department of Endocrinology, Diabetes and Metabolism, Rigshospitalet, Copenhagen, Denmark
| | - Therese J. Larsen
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Copenhagen Denmark
- Danish Diabetes Academy, Odense, Denmark
| | - Allan Vaag
- Department of Endocrinology, Diabetes and Metabolism, Rigshospitalet, Copenhagen, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Bente K. Pedersen
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Copenhagen Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Søren Nielsen
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Copenhagen Denmark
| | - Camilla Scheele
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Copenhagen Denmark
- Novo Nordisk Foundation Center, Section for Basic Metabolic Research, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark
- Corresponding author. Centre of Inflammation and Metabolism, Rigshospitalet – Section 7641, Blegdamsvej 9, DK-2100 Copenhagen, Denmark. Fax: +45 3545 7644.Centre of Inflammation and MetabolismRigshospitalet – Section 7641Blegdamsvej 9CopenhagenDK-2100Denmark
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Ding L, Ni J, Yang F, Huang L, Deng H, Wu Y, Ding X, Tang J. Promising therapeutic role of miR-27b in tumor. Tumour Biol 2017; 39:1010428317691657. [PMID: 28351320 DOI: 10.1177/1010428317691657] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
MicroRNAs are small nonprotein-encoding RNAs ranging from 18 to 25 nucleotides in size and regulate multiple biological pathways via directly targeting a variety of associated genes in cancers. MicroRNA-27b is a highly conserved MicroRNA throughout vertebrates and there are two homologs (hsa-miR-27a and hsa-miR-27b) in humans. MicroRNA-27b is an intragenic microRNA located on chromosome 9q22.1 within the C9orf3 gene, clustering with miR-23b and miR-24-1 in human. As a frequently dysregulated microRNA in human cancers, microRNA-27b could function as a tumor suppressor or an oncogenic microRNA. More and more studies indicate that microRNA-27b is involved in affecting various biological processes, such as angiogenesis, proliferation, metastasis, and drug resistance, and thus may act as a promising therapeutic target in human cancers. In this review, we discuss the role of microRNA-27b in detail and offer novel insights into molecular targeting therapy for cancers.
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Affiliation(s)
- Li Ding
- 1 School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, P.R. China.,2 Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Nanjing, P.R. China
| | - Jie Ni
- 2 Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Nanjing, P.R. China.,3 The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, P.R. China
| | - Fan Yang
- 2 Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Nanjing, P.R. China
| | - Lingli Huang
- 2 Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Nanjing, P.R. China
| | - Heng Deng
- 4 The Graduate School, AnHui University of Traditional Chinese Medicine, Hefei, P.R. China
| | - Yang Wu
- 2 Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Nanjing, P.R. China
| | - Xuansheng Ding
- 1 School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, P.R. China
| | - Jinhai Tang
- 2 Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Nanjing, P.R. China.,5 Department of General Surgery, The First Affiliated Hospital with Nanjing Medical University, Nanjing, P.R. China
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Hao J, Lou Q, Wei Q, Mei S, Li L, Wu G, Mi QS, Mei C, Dong Z. MicroRNA-375 Is Induced in Cisplatin Nephrotoxicity to Repress Hepatocyte Nuclear Factor 1-β. J Biol Chem 2017; 292:4571-4582. [PMID: 28119452 DOI: 10.1074/jbc.m116.754929] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 01/19/2017] [Indexed: 12/25/2022] Open
Abstract
Nephrotoxicity is a major adverse effect of cisplatin-mediated chemotherapy in cancer patients. The pathogenesis of cisplatin-induced nephrotoxicity remains largely unclear, making it difficult to design effective renoprotective approaches. Here, we have examined the role of microRNAs (miRNAs) in cisplatin-induced nephrotoxicity. We show that cisplatin nephrotoxicity was not affected by overall depletion of both beneficial and detrimental miRNAs from kidney proximal tubular cells in mice in which the miRNA-generating enzyme Dicer had been conditionally knocked out. To identify miRNAs involved in cisplatin nephrotoxicity, we used microarray analysis to profile miRNA expression and identified 47 up-regulated microRNAs and 20 down-regulated microRNAs in kidney cortical tissues. One up-regulated miRNA was miR-375, whose expression was also induced in cisplatin-treated renal tubular cells. Interestingly, inhibition of miR-375 decreased cisplatin-induced apoptosis, suggesting that miR-375 is a cell-damaging or pro-apoptotic agent. Blockade of P53 or NF-κB attenuated cisplatin-induced miR-375 expression, supporting a role of P53 and NF-κB in miR-375 induction. We also identified hepatocyte nuclear factor 1 homeobox B (HNF-1β) as a key downstream target of miR-375. Of note, we further demonstrated that HNF-1β protected renal cells against cisplatin-induced apoptosis. Together, these results suggest that upon cisplatin exposure, P53 and NF-κB collaboratively induce miR-375 expression, which, in turn, represses HNF-1β activity, resulting in renal tubular cell apoptosis and nephrotoxicity.
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Affiliation(s)
- Jielu Hao
- From the Department of Nephrology, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China.,the Department of Cellular Biology and Anatomy and
| | - Qiang Lou
- the Department of Cellular Biology and Anatomy and.,the Antibody Drug Engineering Laboratory of Henan Province, Henan University School of Medicine, Kaifeng, Henan 475004, China
| | - Qingqing Wei
- the Department of Cellular Biology and Anatomy and
| | - Shuqin Mei
- From the Department of Nephrology, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China.,the Department of Cellular Biology and Anatomy and
| | - Lin Li
- From the Department of Nephrology, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China.,the Department of Cellular Biology and Anatomy and
| | - Guangyu Wu
- Department of Pharmacology and Toxicology, Medical College of Georgia at Augusta University and Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia 30912
| | - Qing-Sheng Mi
- the Departments of Dermatology and Internal Medicine, Henry Ford Health System, Detroit, Michigan 48202, and
| | - Changlin Mei
- From the Department of Nephrology, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China,
| | - Zheng Dong
- the Department of Cellular Biology and Anatomy and .,the Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
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Chen QN, Wei CC, Wang ZX, Sun M. Long non-coding RNAs in anti-cancer drug resistance. Oncotarget 2017; 8:1925-1936. [PMID: 27713133 PMCID: PMC5352108 DOI: 10.18632/oncotarget.12461] [Citation(s) in RCA: 139] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Accepted: 09/16/2016] [Indexed: 12/20/2022] Open
Abstract
Chemotherapy is one of the basic treatments for cancers; however, drug resistance is mainly responsible for the failure of clinical treatment. The mechanism of drug resistance is complicated because of interaction among various factors including drug efflux, DNA damage repair, apoptosis and targets mutation. Long non-coding RNAs (lncRNAs) have been a focus of research in the field of bioscience, and the latest studies have revealed that lncRNAs play essential roles in drug resistance in breast cancer, gastric cancer and lung cancer, et al. Dysregulation of multiple targets and pathways by lncRNAs results in the occurrence of chemoresistance. In this review, we will discuss the mechanisms underlying lncRNA-mediated resistance to chemotherapy and the therapeutic potential of lncRNAs in future cancer treatment.
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Affiliation(s)
- Qin-nan Chen
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Chen-chen Wei
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Zhao-xia Wang
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Ming Sun
- Department of Bioinformatics and Computational Biology, UT MD Anderson Cancer Center, Houston, Texas, United States of America
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An X, Sarmiento C, Tan T, Zhu H. Regulation of multidrug resistance by microRNAs in anti-cancer therapy. Acta Pharm Sin B 2017; 7:38-51. [PMID: 28119807 PMCID: PMC5237711 DOI: 10.1016/j.apsb.2016.09.002] [Citation(s) in RCA: 140] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 05/30/2016] [Accepted: 07/06/2016] [Indexed: 12/31/2022] Open
Abstract
Multidrug resistance (MDR) remains a major clinical obstacle to successful cancer treatment. Although diverse mechanisms of MDR have been well elucidated, such as dysregulation of drugs transporters, defects of apoptosis and autophagy machinery, alterations of drug metabolism and drug targets, disrupti on of redox homeostasis, the exact mechanisms of MDR in a specific cancer patient and the cross-talk among these different mechanisms and how they are regulated are poorly understood. MicroRNAs (miRNAs) are a new class of small noncoding RNAs that could control the global activity of the cell by post-transcriptionally regulating a large variety of target genes and proteins expression. Accumulating evidence shows that miRNAs play a key regulatory role in MDR through modulating various drug resistant mechanisms mentioned above, thereby holding much promise for developing novel and more effective individualized therapies for cancer treatment. This review summarizes the various MDR mechanisms and mainly focuses on the role of miRNAs in regulating MDR in cancer treatment.
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Affiliation(s)
- Xin An
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China
- Department of Surgery, Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Cesar Sarmiento
- Department of Surgery, Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Tao Tan
- Department of Surgery, Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
- Corresponding authors..
| | - Hua Zhu
- Department of Surgery, Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
- Corresponding authors..
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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: 67] [Impact Index Per Article: 8.4] [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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Fang Q, Chen X, Zhi X. Long Non-Coding RNA (LncRNA) Urothelial Carcinoma Associated 1 (UCA1) Increases Multi-Drug Resistance of Gastric Cancer via Downregulating miR-27b. Med Sci Monit 2016; 22:3506-3513. [PMID: 27694794 PMCID: PMC5051552 DOI: 10.12659/msm.900688] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND In this study, we aimed to investigate the association between UCA1 and miR-27b in gastric cancer and further study their involvement in multi-drug resistance (MDR) of gastric cancer. MATERIAL AND METHODS The microarray data of dysregulated lncRNAs in gastric cancer tissues was retrieved in the GEO dataset. QRT-PCR analysis was performed to assess UCA1 expression based on 28 paired cancerous and peritumoral normal tissues. The human gastric cancer cell line SGC-7901, and SGC-7901 derived Adriamycin (doxorubicin) resistant SGC-7901/ADR, cisplatin resistant SGC-7901/DDP, and 5-FU resistant SGC-7901/FU cells were used as in vitro cell models to assess the effect of UCA1 and miR-27b on MDR. RESULTS UCA1 was significantly upregulated in the cancerous tissues and its expression was negatively correlated with miR-27b expression level. Inhibition of UCA1 significantly restored miR-27b expression in MDR gastric cancer cells. UCA1 knockdown and miR-27b overexpression reduced IC50 of ADR, DDP, and 5-FU in SGC-7901/ADR cells and increased ADR induced cell apoptosis. UCA1 overexpression and miR-27b inhibition increased the IC50 of ADR, DDP, and 5-FU in SGC-7901 cells and reduced ADR induced cell apoptosis. Western blot analysis showed that UCA1 knockdown and miR-27b overexpression also decreased anti-apoptotic protein BCL-2 and increased apoptotic protein cleaved caspase-3. CONCLUSIONS UCA1 is negatively correlated with miR-27b expression in gastric cancer tissue. Knockdown of UCA1 restored miR-27b expression in gastric cancer cells. The UCA1-miR-27b axis was involved in regulation of chemosensitivity of gastric cancer cells.
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Affiliation(s)
- Qun Fang
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, China (mainland)
| | - XiaoYan Chen
- Department of Emergency, Yidu Central Hospital of Weifang, Weifang, China (mainland)
| | - XuTing Zhi
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, China (mainland)
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Curcumin inhibits cell growth and induces cell apoptosis through upregulation of miR-33b in gastric cancer. Tumour Biol 2016; 37:13177-13184. [DOI: 10.1007/s13277-016-5221-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 07/14/2016] [Indexed: 12/11/2022] Open
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MiR-27b is epigenetically downregulated in tamoxifen resistant breast cancer cells due to promoter methylation and regulates tamoxifen sensitivity by targeting HMGB3. Biochem Biophys Res Commun 2016; 477:768-773. [PMID: 27363334 DOI: 10.1016/j.bbrc.2016.06.133] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Accepted: 06/26/2016] [Indexed: 12/12/2022]
Abstract
MiR-27b downregulation is significantly associated with tamoxifen resistance in breast cancer cells. However, how it is downregulated in tamoxifen resistant (TamR) breast cancer cells and its downstream regulation were not clear. By performing MSP assay and QRT-PCR analysis with the use of 5-AZA-dC, a DNA methyltransferase inhibitor, we observed that TamR MCF-7 cells had significantly higher levels of methylation in the miR-27b promoter region than tamoxifen sensitive MCF-7 (TamS) cells and demethylation restored miR-27b expression. Re-expression of miR-27b sensitized TamR MCF-7 cells to tamoxifen, inhibited invasion and reversed epithelial-mesenchymal transition (EMT)-like properties. By using bioinformatics analysis and following dual luciferase and western blot analysis, this study confirmed a direct regulation of miR-27b on HMGB3 expression by binding to the 3'UTR. In addition, this study also found that silencing of HMGB3 indeed partially phenocopied the effects of miR-27b in reducing tamoxifen resistance and cell invasion and in reversing EMT-like properties. Therefore, we infer that HMGB3 is a functional target of miR-27b in modulation of tamoxifen resistance and EMT.
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Wang S, Yuan L. Predictive biomarkers for targeted and cytotoxic agents in gastric cancer for personalized medicine. Biosci Trends 2016; 10:171-80. [PMID: 27251446 DOI: 10.5582/bst.2016.01078] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Gastric cancer (GC) is the fourth most common cancer and the second leading cause of cancer. The treatment of GC remains challenging as the outcomes achieved with surgery alone or adjuvant or neoadjuvant chemotherapy and radiotherapy are relatively poor. New treatment strategies are emerging and are being tested in solid tumors including GC. Over the past few years, the treatment of metastatic colorectal cancer (CRC) has made great advances, but strategies to manage GC have improved little. Multiple drug resistance is common in GC chemotherapy and targeted therapy; some patients appear to receive treatment that is suboptimal or even inefficacious. Unfortunately, there are few validated predictive biomarkers to guide the tailored treatment of GC. ToGA and AVAGAST are two phase III trials that tested the efficacy and safety of targeted agents in advanced gastric cancer (AGC), and results clearly indicated that patients need to be selected and that targeted agents are the best hope for better results. This review aims to provide an overview of potential predictive biomarkers for cytotoxic and targeted agents in GC.
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Affiliation(s)
- Shalong Wang
- Geriatric Surgery Department, Second Xiangya Hospital Affiliated with Central South University
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Wu J, Qin H, Li T, Cheng K, Dong J, Tian M, Chai N, Guo H, Li J, You X, Dong M, Ye M, Nie Y, Zou H, Fan D. Characterization of site-specific glycosylation of secreted proteins associated with multi-drug resistance of gastric cancer. Oncotarget 2016; 7:25315-27. [PMID: 27015365 PMCID: PMC5041906 DOI: 10.18632/oncotarget.8287] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 03/06/2016] [Indexed: 01/14/2023] Open
Abstract
Multi-drug resistance (MDR) remains a great obstacle to effective chemotherapy for gastric cancer. A number of secreted glycoproteins have been reported to be involved in the development of MDR in gastric cancer. However, whether glycosylation of secreted glycoproteins changes during MDR of gastric cancer is unclear. Our present work manifested that N-glycosites and site-specific glycoforms of secreted proteins in drug-resistant cell lines were distinctly different from those in the parental cell line for the first time. Further characterization highlighted the significance of some aberrantly glycosylated secretory proteins in MDR, suggesting that manipulating the glycosylation of specific glycoproteins could be a potential target for overcoming multi-drug resistance in gastric cancer.
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Affiliation(s)
- Jian Wu
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Hongqiang Qin
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Ting Li
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Kai Cheng
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jiaqiang Dong
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Miaomiao Tian
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Na Chai
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Hao Guo
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Jinjing Li
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Xin You
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Mingming Dong
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Mingliang Ye
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yongzhan Nie
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Hanfa Zou
- Key Laboratory of Separation Sciences for Analytical Chemistry, National Chromatographic R & A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Daiming Fan
- State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
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