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Liu N, Yang C, Gao A, Sun M, Lv D. MiR-101: An Important Regulator of Gene Expression and Tumor Ecosystem. Cancers (Basel) 2022; 14:cancers14235861. [PMID: 36497343 PMCID: PMC9739992 DOI: 10.3390/cancers14235861] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 11/23/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
MiRNAs are small single-stranded non-coding RNAs. MiRNA contributes to the transcriptional and post-transcriptional regulation of mRNA in different cell types, including mRNA transcription inhibition and mRNA decay and phenotypes via the effect of several essential oncogenic processes and tumor microenvironment. MiR-101 is a highly conserved miRNA that was found to alter the expression in various human cancers. MiR-101 has been reported to have tumor oncogenic and suppressive effects to regulate tumorigenesis and tumor progression. In this review, we summarize the new findings about the roles of miR-101 in cancers and the underlying mechanisms of targeting genes degradation and microenvironment regulation, which will improve biological understanding and design of novel therapeutics.
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Affiliation(s)
- Ning Liu
- Department of Oncology, Central Hospital Affiliated to Shandong First Medical University, Jinan 250013, China
| | - Chunsheng Yang
- Department of Oncology, Central Hospital Affiliated to Shandong First Medical University, Jinan 250013, China
| | - Ang Gao
- Department of Oncology, Central Hospital Affiliated to Shandong First Medical University, Jinan 250013, China
| | - Meili Sun
- Department of Oncology, Central Hospital Affiliated to Shandong First Medical University, Jinan 250013, China
- Correspondence: (M.S.); (D.L.)
| | - Deguan Lv
- UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA 15232, USA
- Correspondence: (M.S.); (D.L.)
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2
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Shabgah AG, Salmaninejad A, Thangavelu L, Alexander M, Yumashev AV, Goleij P, Hedayati-Moghadam M, Mohammadi H, Ahmadi M, Navashenaq JG. The role of non-coding genome in the behavior of infiltrated myeloid-derived suppressor cells in tumor microenvironment; a perspective and state-of-the-art in cancer targeted therapy. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2020; 161:17-26. [PMID: 33259833 DOI: 10.1016/j.pbiomolbio.2020.11.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 11/20/2020] [Accepted: 11/25/2020] [Indexed: 12/13/2022]
Abstract
Cancer is one of the healthcare problems that affect many communities around the world. Many factors contribute to cancer development. Besides, these factors are counted as the main impediment in cancer immunotherapy. Myeloid-derived suppressor cells (MDSCs) are one of these impediments. MDSCs inhibit the immune responses through various mechanisms such as inhibitory cytokine release and nitric oxide metabolite production. Several factors are involved in forming these cells, including tumor secreted cytokine and chemokines, transcription factors, and non-coding RNA. In the meantime, micro-RNAs (miRNAs) and long non-coding RNAs (lncRNAs) are the vital gene regulatory elements that affect gene expression. In this study, we are going to discuss the role of miRNAs and lncRNAs in MDSCs development in a cancer situation. It is hoped that miRNA and lncRNAs targeting may prevent the growth and development of these inhibitory cells in the cancer environment.
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Affiliation(s)
- Arezoo Gowhari Shabgah
- School of Medicine, Bam University of Medical Sciences, Bam, Iran; Student Research Committee, Bam University of Medical Sciences, Bam, Iran
| | - Arash Salmaninejad
- Department of Medical Genetics, Medical Genetics Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Lakshmi Thangavelu
- Department of Pharmacology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | | | - Alexei Valerievich Yumashev
- Department of Prosthetic Dentistry, Sechenov First Moscow State Medical University, Moscow, Russian Federation
| | - Pouya Goleij
- Sana Institute of Higher Education, Faculty of Biology, Department of Genetics, Sari, Iran
| | | | - Hamed Mohammadi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran; Department of Immunology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Majid Ahmadi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jamshid Gholizadeh Navashenaq
- Student Research Committee, Bam University of Medical Sciences, Bam, Iran; Noncommunicable Diseases Research Center, Bam University of Medical Sciences, Bam, Iran.
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3
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Gu Y, Zhang S. High-throughput sequencing identification of differentially expressed microRNAs in metastatic ovarian cancer with experimental validations. Cancer Cell Int 2020; 20:517. [PMID: 33100909 PMCID: PMC7579798 DOI: 10.1186/s12935-020-01601-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 10/12/2020] [Indexed: 01/04/2023] Open
Abstract
Background Ovarian cancer (OC) is a common gynecological cancer and characterized by high metastatic potential. MicroRNAs (miRNAs, miRs) have the promise to be harnessed as prognostic and therapeutic biomarkers for OC. Herein, we sought to identify differentially expressed miRNAs and mRNAs in metastatic OC, and to validate them with functional experiments. Methods Differentially expressed miRNAs and mRNAs were screened from six pairs of primary OC tissues and metastatic tissues using a miRStar™ Human Cancer Focus miRNA and Target mRNA PCR Array. Then, gene expression profiling results were verified by reverse transcription quantitative polymerase chain reaction (RT-qPCR) and western blot assays. The binding affinity between miR-7-5p and TGFβ2 was validated by dual-luciferase reporter assay. Expression of miR-7-5p and TGFβ2 was manipulated to assess their roles in malignant phenotypes of highly metastatic HO-8910PM cells. Results MiRNA profiling and sequencing identified 12 miRNAs and 10 mRNAs that were differentially expressed in metastatic tissues. Gene ontology and Pathway analyses determined that 3 differentially expressed mRNAs (ITGB3, TGFβ2 and TNC) were related to OC metastasis. The results of RT-qPCR confirmed that the decrease of miR-7-5p was most significant in OC metastasis, while TGFβ2 was up-regulated in OC metastasis. Moreover, miR-7-5p targeted and negatively regulated TGFβ2. MiR-7-5p overexpression accelerated HO-8910PM cell viability and invasion, and TGFβ2 overexpression reversed the results. Meanwhile, simultaneous miR-7-5p and TGFβ2 overexpression rescued the cell activities. Conclusions This study characterizes differentially expressed miRNAs and mRNAs in metastatic OC, where miR-7-5p and its downstream target were most closely associated with metastatic OC. Overexpression of miR-7-5p targets and inhibits TGFβ2 expression, thereby inhibiting the growth and metastasis of OC.
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Affiliation(s)
- Yang Gu
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36, Sanhao Street, Heping District, Shenyang, 110004 Liaoning P. R. China
| | - Shulan Zhang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36, Sanhao Street, Heping District, Shenyang, 110004 Liaoning P. R. China
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Alshamrani AA. Roles of microRNAs in Ovarian Cancer Tumorigenesis: Two Decades Later, What Have We Learned? Front Oncol 2020; 10:1084. [PMID: 32850313 PMCID: PMC7396563 DOI: 10.3389/fonc.2020.01084] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 05/29/2020] [Indexed: 12/24/2022] Open
Abstract
Ovarian cancer is one of the top gynecological malignancies that cause deaths among females in the United States. At the molecular level, significant progress has been made in our understanding of ovarian cancer development and progression. MicroRNAs (miRNAs) are short, single-stranded, highly conserved non-coding RNA molecules (19–25 nucleotides) that negatively regulate target genes post-transcriptionally. Over the last two decades, mounting evidence has demonstrated the aberrant expression of miRNAs in different human malignancies, including ovarian carcinomas. Deregulated miRNAs can have profound impacts on various cancer hallmarks by repressing tumor suppressor genes. This review will discuss up-to-date knowledge of how the aberrant expression of miRNAs and their targeted genes drives ovarian cancer initiation, proliferation, survival, and resistance to chemotherapies. Understanding the mechanisms by which these miRNAs affect these hallmarks should allow the development of novel therapeutic strategies to treat these lethal malignancies.
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Affiliation(s)
- Ali A Alshamrani
- Department of Pharmacology & Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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5
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Role of microRNAs in epidermal growth factor receptor signaling pathway in cervical cancer. Mol Biol Rep 2020; 47:4553-4568. [PMID: 32383136 DOI: 10.1007/s11033-020-05494-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 05/03/2020] [Indexed: 12/18/2022]
Abstract
Cervical cancer is one of the most common disorders in females all around the world. Similar to other types of cancer, several signaling pathways are demonstrated to be involved in the progression of this cancer including ERK/MAPK, PI3K/AKT, apoptotic signaling pathways, Wnt, and epidermal growth factor receptor (EGFR). Various microRNAs (miRNAs) and their target genes involved in cervical cancer have been extracted from the kinds of literature of Scopus, Pubmed and Google scholar databases. Regarding the targets, some of them were found to belong in EGFR signaling pathways. The regulation patterns of these miRNA are different in cervical cancer; however, their main aim is to trigger EGFR signaling to proceed with cancer. Moreover, several predicted miRNAs were found to have some interactions with the differentially expressed genes of cervical cancer which are the members of the EGFR signaling pathway by using miRWalk 3.0 (https://mirwalk.umm.uni-heidelberg.de/) and TargetScan 7.1 (https://www.targetscan.org/vert_71/). Also, the microarray data were obtained from the NCBI-Gene Expression Omnibus (GEO) datasets of cervical cancer. In the present review, we highlight the miRNAs involved in cervical cancer and the role of their targets in the EGFR signaling pathway. Furthermore, some predicted miRNAs were the candidate to target EGFR signaling pathway members differentially expressed in cervical cancer samples compared to normal samples.
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Huang Z, Wu X, Li J. miR-101 suppresses colon cancer cell migration through regulation of EZH2. REVISTA ESPANOLA DE ENFERMEDADES DIGESTIVAS 2020; 113:255-260. [DOI: 10.17235/reed.2020.6800/2019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Liu H, Li G, Ma C, Chen Y, Wang J, Yang Y. Repetitive magnetic stimulation promotes the proliferation of neural progenitor cells via modulating the expression of miR-106b. Int J Mol Med 2018; 42:3631-3639. [PMID: 30320352 DOI: 10.3892/ijmm.2018.3922] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 10/04/2018] [Indexed: 11/05/2022] Open
Abstract
Increasing evidence shows that repetitive transcranial magnetic stimulation (rTMS) promotes neurogenesis and the expression of microRNA (miR)‑106b. The present study investigated whether rTMS promotes the proliferation of neural progenitor cells (NPCs) and whether the effect is associated with the expression of miR‑106b. NPCs were cultured from the rat hippocampus and exposed to rTMS daily, comprising 1,000 stimuli for 3 days at 10 Hz, with 1.75 T output. The proliferation ability of the NPCs was revealed by EdU staining, and the levels of miR‑106b and downstream gene p21 in the NPCs were measured by reverse transcription‑quantitative polymerase chain reaction and western blot analyses. For analysis of the mechanism, the NPCs were transfected with Lenti‑miR‑106b or small interfering RNAs prior to rTMS. The results showed that: i) rTMS increased NPC proliferation, as revealed by the increased proportion of EdU‑positive cells; ii) rTMS was able to upregulate the expression of miR‑106b and downregulate the level of p21 in NPCs; iii) overexpression of miR‑106b further enhanced the effects of rTMS, whereas knockdown of miR‑106b had the opposite effects. Taken together, these data indicated that rTMS can promote NPC proliferation by upregulating the expression of miR‑106b and possibly inhibiting the expression of p21.
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Affiliation(s)
- Hua Liu
- College of Health Science, Wuhan Sports University, Wuhan, Hubei 430079, P.R. China
| | - Gaohua Li
- Graduate School, Wuhan Sports University, Wuhan, Hubei 430079, P.R. China
| | - Chunlian Ma
- College of Health Science, Wuhan Sports University, Wuhan, Hubei 430079, P.R. China
| | - Yanfang Chen
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH 45435, USA
| | - Jinju Wang
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, OH 45435, USA
| | - Yi Yang
- College of Health Science, Wuhan Sports University, Wuhan, Hubei 430079, P.R. China
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Wen Y, Cai J, Hou Y, Huang Z, Wang Z. Role of EZH2 in cancer stem cells: from biological insight to a therapeutic target. Oncotarget 2018; 8:37974-37990. [PMID: 28415635 PMCID: PMC5514966 DOI: 10.18632/oncotarget.16467] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 03/02/2017] [Indexed: 02/06/2023] Open
Abstract
Epigenetic modifications in cancer stem cells largely result in phenotypic and functional heterogeneity in many solid tumors. Increasing evidence indicates that enhancer of zeste homolog 2 (EZH2), the catalytic subunit of Polycomb repressor complex 2, is highly expressed in cancer stem cells of numerous malignant tumors and has a critical function in cancer stem cell expansion and maintenance. Here, we review up-to-date information regarding EZH2 expression patterns, functions, and molecular mechanisms in cancer stem cells in various malignant tumors and discuss the therapeutic potential of targeting EZH2 in tumors.
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Affiliation(s)
- Yiping Wen
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Cai
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yaya Hou
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zaiju Huang
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zehua Wang
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Sun MY, Zhu JY, Zhang CY, Zhang M, Song YN, Rahman K, Zhang LJ, Zhang H. Autophagy regulated by lncRNA HOTAIR contributes to the cisplatin-induced resistance in endometrial cancer cells. Biotechnol Lett 2017; 39:1477-1484. [PMID: 28721581 DOI: 10.1007/s10529-017-2392-4] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 07/13/2017] [Indexed: 01/08/2023]
Abstract
OBJECTIVES To identify whether lncRNAs (long non-coding RNA) participate in the regulation of cisplatin-resistant induced autophagy in endometrial cancer cells. RESULTS Autophagy activity was significantly boosted in cisplatin-resistant Ishikawa cells, a human endometrial cancer cell line, compared with that in parental Ishikawa cells. After analyzing the overall long noncoding RNA (lncRNA) profiling, a meaningful lncRNA, HOTAIR, was identified. It was down-regulated simultaneously in cisplatin-resistant Ishikawa cells and parental Ishikawa cells treated with cisplatin. RNA interference of HOTAIR reduced the proliferation of cisplatin-resistant Ishikawa cells and enhanced the autophagy activity of cisplatin-resistant Ishikawa cells with or without cisplatin treatment, in addition, beclin-1, multidrug resistance (MDR), and P-glycoprotein (P-gp) were mediated by lncRNA HOTAIR. CONCLUSIONS It is clear that lncRNAs, specifically HOTAIR, can regulate the cisplatin-resistance ability of human endometrial cancer cells through the regulation of autophagy by influencing Beclin-1, MDR, and P-gp expression.
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Affiliation(s)
- Meng-Yao Sun
- Central Laboratory, Seventh People's Hospital of Shanghai, University of TCM, Shanghai, 200137, China
- Department of Pharmaceutical Botany, School of Pharmacy, Second Military Medical University, Shanghai, 200137, China
| | - Jian-Yong Zhu
- Central Laboratory, Seventh People's Hospital of Shanghai, University of TCM, Shanghai, 200137, China
| | - Chun-Yan Zhang
- Central Laboratory, Seventh People's Hospital of Shanghai, University of TCM, Shanghai, 200137, China
| | - Miao Zhang
- Central Laboratory, Seventh People's Hospital of Shanghai, University of TCM, Shanghai, 200137, China
| | - Ya-Nan Song
- Central Laboratory, Seventh People's Hospital of Shanghai, University of TCM, Shanghai, 200137, China
| | - Khalid Rahman
- Faculty of Science, School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, UK
| | - Li-Jun Zhang
- Central Laboratory, Seventh People's Hospital of Shanghai, University of TCM, Shanghai, 200137, China.
| | - Hong Zhang
- Central Laboratory, Seventh People's Hospital of Shanghai, University of TCM, Shanghai, 200137, China.
- Department of Pharmaceutical Botany, School of Pharmacy, Second Military Medical University, Shanghai, 200137, China.
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10
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MicroRNAs in gynecological cancers: Small molecules with big implications. Cancer Lett 2017; 407:123-138. [PMID: 28549791 DOI: 10.1016/j.canlet.2017.05.011] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 05/10/2017] [Accepted: 05/15/2017] [Indexed: 12/14/2022]
Abstract
Gynecological cancers (GCs) are often diagnosed at advanced stages, limiting the efficacy of available therapeutic options. Thus, there remains an urgent and unmet need for innovative research for the efficient clinical management of GC patients. Research over past several years has revealed the enormous promise of miRNAs. These small non-coding RNAs can aid in the diagnosis, prognosis and therapy of all major GCs, viz., ovarian cancers, cervical cancers and endometrial cancers. Mechanistic details of the miRNAs-mediated regulation of multiple biological functions are under constant investigation, and a number of miRNAs are now believed to influence growth, proliferation, invasion, metastasis, chemoresistance and the relapse of different GCs. Modulation of tumor microenvironment by miRNAs can possibly explain some of their reported biological effects. miRNA signatures have been proposed as biomarkers for the early detection of GCs, even the various subtypes of individual GCs. miRNA signatures are also being pursued as predictors of response to therapies. This review catalogs the knowledge gained from collective studies, so as to assess the progress made so far. It is time to ponder over the knowledge gained, so that more meaningful pre-clinical and translational studies can be designed to better realize the potential that miRNAs have to offer.
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11
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Zhou F, Chen J, Wang H. MicroRNA-298 inhibits malignant phenotypes of epithelial ovarian cancer by regulating the expression of EZH2. Oncol Lett 2016; 12:3926-3932. [PMID: 27895750 PMCID: PMC5104211 DOI: 10.3892/ol.2016.5204] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 09/01/2016] [Indexed: 01/17/2023] Open
Abstract
MicroRNA (miRNA or miR)-298 has been reported to be downregulated and to modify the expression of the polycomb protein enhancer of zeste 2 (EZH2) in recurrent epithelial ovarian cancer (EOC). To date, no functional evidence of a miR-298-EZH2 axis in EOC has been documented. The present study aimed to investigate the associations of miR-298 and/or EZH2 expression with clinicopathological features of EOC patients, and revealed their roles in cell motility based on EOC cell lines. Reverse transcription-quantitative polymerase chain reaction was performed to detect the expression levels of miR-298 and EZH2 messenger RNA in human EOC tissues and cell lines. Wound healing and transwell assays were performed to determine the function of the miR-298-EZH2 axis on cell migration and invasion, respectively. Compared with normal tissues, miR-298 expression was significantly downregulated, while EZH2 expression was significantly upregulated, in human EOC tissues (both P=0.001). In addition, miR-298 downregulation and EZH2 upregulation were significantly associated with high clinical stage (both P=0.01) and pathological grade (both P=0.02) of EOC patients. Furthermore, the ectopic expression of miR-298 could efficiently inhibit cell migration and invasion. Notably, the overexpression of EZH2 could restore the cell migration and invasion abilities suppressed by miR-298. Our data offer convincing evidence that the dysregulation of the miR-298-EZH2 axis may be important in tumor progression of EOC patients. The present study also confirmed a tumor-suppressive role of miR-298 in modulating EOC cell motility by regulating the expression of EZH2, implying its potential as a novel miRNA-based therapeutic target for the treatment of human EOC.
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Affiliation(s)
- Fenmei Zhou
- Department of Obstetrics and Gynecology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| | - Juan Chen
- Huai'an Maternal and Child Healthcare Center, Huai'an, Jiangsu 223302, P.R. China
| | - Hairong Wang
- Department of Obstetrics and Gynecology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
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miR-101 sensitizes K562 cell line to imatinib through Jak2 downregulation and inhibition of NF-κB target genes. Tumour Biol 2016; 37:14117-14128. [DOI: 10.1007/s13277-016-5205-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 07/13/2016] [Indexed: 12/22/2022] Open
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13
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Meryet-Figuière M, Lambert B, Gauduchon P, Vigneron N, Brotin E, Poulain L, Denoyelle C. An overview of long non-coding RNAs in ovarian cancers. Oncotarget 2016; 7:44719-44734. [PMID: 26992233 PMCID: PMC5190131 DOI: 10.18632/oncotarget.8089] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 02/23/2016] [Indexed: 12/14/2022] Open
Abstract
As with miRNAs a decade ago, the scientific community recently understood that lncRNAs represent a new layer of complexity in the regulation of gene expression. Although only a subset of lncRNAs has been functionally characterized, it is clear that they are deeply involved in the most critical physiological and pathological biological processes. This review shows that in ovarian carcinoma, data already available testify to the importance of lncRNAs and that the demonstration of an ever-growing role of lncRNAs in the biology of this malignancy can be expected from future studies. We also underline the importance of their relationship with associated protein partners and miRNAs. Together, the available information suggests that the emerging field of lncRNAs will pave the way for a better understanding of ovarian cancer biology and might lead to the development of innovative therapeutic approaches. Moreover, lncRNAs expression signatures either alone or in combination with other types of markers (miRNAs, mRNAs, proteins) could prove useful to predict outcome or treatment follow-up in order to improve the therapeutic care of ovarian carcinoma patients.
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Affiliation(s)
- Matthieu Meryet-Figuière
- Inserm U1199, Biology and Innovative Therapeutics for Locally Aggressive Cancer (BioTICLA) Unit, Caen, France
- Normandie University, Caen, France
- UNICAEN, Caen, France
- Comprehensive Cancer Center CLCC François Baclesse, Unicancer, Caen, France
| | - Bernard Lambert
- Inserm U1199, Biology and Innovative Therapeutics for Locally Aggressive Cancer (BioTICLA) Unit, Caen, France
- Normandie University, Caen, France
- UNICAEN, Caen, France
- Comprehensive Cancer Center CLCC François Baclesse, Unicancer, Caen, France
- CNRS, Paris, France
| | - Pascal Gauduchon
- Inserm U1199, Biology and Innovative Therapeutics for Locally Aggressive Cancer (BioTICLA) Unit, Caen, France
- Normandie University, Caen, France
- UNICAEN, Caen, France
- Comprehensive Cancer Center CLCC François Baclesse, Unicancer, Caen, France
| | - Nicolas Vigneron
- Inserm U1199, Biology and Innovative Therapeutics for Locally Aggressive Cancer (BioTICLA) Unit, Caen, France
- Normandie University, Caen, France
- UNICAEN, Caen, France
- Comprehensive Cancer Center CLCC François Baclesse, Unicancer, Caen, France
| | - Emilie Brotin
- Inserm U1199, Biology and Innovative Therapeutics for Locally Aggressive Cancer (BioTICLA) Unit, Caen, France
- Normandie University, Caen, France
- UNICAEN, Caen, France
- Comprehensive Cancer Center CLCC François Baclesse, Unicancer, Caen, France
| | - Laurent Poulain
- Inserm U1199, Biology and Innovative Therapeutics for Locally Aggressive Cancer (BioTICLA) Unit, Caen, France
- Normandie University, Caen, France
- UNICAEN, Caen, France
- Comprehensive Cancer Center CLCC François Baclesse, Unicancer, Caen, France
| | - Christophe Denoyelle
- Inserm U1199, Biology and Innovative Therapeutics for Locally Aggressive Cancer (BioTICLA) Unit, Caen, France
- Normandie University, Caen, France
- UNICAEN, Caen, France
- Comprehensive Cancer Center CLCC François Baclesse, Unicancer, Caen, France
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14
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Hu J, Meng Y, Yu T, Hu L, Mao M. Ubiquitin E3 ligase MARCH7 promotes ovarian tumor growth. Oncotarget 2016; 6:12174-87. [PMID: 25895127 PMCID: PMC4494930 DOI: 10.18632/oncotarget.3650] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 02/28/2015] [Indexed: 12/12/2022] Open
Abstract
Ubiquitin E3 ligase MARCH7 is involved in T cell proliferation and neuronal development. We found that expression of MARCH7 was higher in ovarian cancer tissues than normal ovarian tissues. Silencing MARCH7 decreased cell proliferation, migration, and invasion. Ectopic expression of MARCH7 increased cell proliferation, migration and invasion. Silencing MARCH7 prevented ovarian cancer growth in mice. Silencing MARCH7 inhibited NFkB and Wnt/β-catenin pathway. In agreement, ectopically expressed MARCH7 activated NFkB and Wnt/β-catenin pathways. Finally, MARCH7 was regulated by miR-101. Thus, MARCH7 is oncogenic and a potential target (oncotarget) for ovarian cancer therapy.
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Affiliation(s)
- Jianguo Hu
- Department of Obstetrics and Gynecology, Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Ying Meng
- Department of Obstetrics and Gynecology, Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Tinghe Yu
- Department of Obstetrics and Gynecology, Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Lina Hu
- Department of Obstetrics and Gynecology, Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Ming Mao
- Department of Obstetrics and Gynecology, Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
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15
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MicroRNA-101 targets von Hippel-Lindau tumor suppressor (VHL) to induce HIF1α mediated apoptosis and cell cycle arrest in normoxia condition. Sci Rep 2016; 6:20489. [PMID: 26841847 PMCID: PMC4740907 DOI: 10.1038/srep20489] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 01/05/2016] [Indexed: 01/04/2023] Open
Abstract
The activation/inactivation of HIF1α is precisely regulated in an oxygen-dependent manner. HIF1α is essential for hypoxia induced apoptosis and cell cycle arrest. Several recent studies indicated that the expression of miRNAs can be modulated by hypoxia. However, the involvement of miRNAs in the regulation of HIF1α induction remains elusive. In present study, we demonstrated that miR-101 was rapidly and transiently induced after hypoxia in breast cancer cells. Over-expression of miR-101 significantly inhibited cell proliferation in breast cancer cells through increased apoptosis and cell cycle arrest in normoxia condition. This inhibitory phenomenon seems due to miR-101-mediated induction of HIF1α, because we identified that VHL, a negative regulator of HIF1α, is a novel target of miR-101 and over-expression of miR-101 decreased VHL levels and subsequently stabilized HIF1α and induced its downstream target VEGFA. Furthermore, we demonstrated that siRNA-mediated knockdown of VHL or HIF1α overexpression could also induce apoptosis and cell cycle arrest whereas enforced expression of VHL, administration of anti-miR-101 oligos or treatment of 2-MeOE2, an inhibitor of HIF1α, could rescue cells from such inhibition. These results reveal a novel regulatory mechanism of HIF1α induction in normoxia and suggest that miR-101 mediated proliferation inhibition may through HIF1α mediated apoptosis and cell cycle arrest.
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Gilloteaux J, Lau HL, Gourari I, Neal D, Jamison JM, Summers J. Apatone ® induces endometrioid ovarian carcinoma (MDAH 2774) cells to undergo karyolysis and cell death by autoschizis: A potent and safe anticancer treatment. TRANSLATIONAL RESEARCH IN ANATOMY 2015. [DOI: 10.1016/j.tria.2015.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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Konno Y, Dong P, Xiong Y, Suzuki F, Lu J, Cai M, Watari H, Mitamura T, Hosaka M, Hanley SJB, Kudo M, Sakuragi N. MicroRNA-101 targets EZH2, MCL-1 and FOS to suppress proliferation, invasion and stem cell-like phenotype of aggressive endometrial cancer cells. Oncotarget 2015; 5:6049-62. [PMID: 25153722 PMCID: PMC4171612 DOI: 10.18632/oncotarget.2157] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
MicroRNA-101 has been implicated as a tumor suppressor miRNA in human tumors. However, its potential functional impact and the underlying mechanisms in endometrial cancer progression have not been determined. Here, we report that in aggressive endometrial cancer cells, re-expression of microRNA-101 leads to inhibition of cell proliferation and induction of apoptosis and senescence. Ectopic overexpression of microRNA-101 attenuates the epithelial-mesenchymal transition-associated cancer cell migration and invasion, abrogates the sphere-forming capacity and enhances chemosensitivity to paclitaxel. Algorithm and microarray-based strategies identifies potential microRNA-101 targets. Among these, we validated EZH2, MCL-1 and FOS as direct targets of miR-101 and silencing of these genes mimics the tumor suppressive effects observed on promoting microRNA-101 function. Importantly, further results suggest an inverse correlation between low miR-101 and high EZH2, MCL-1 and FOS expression in EC specimens. We conclude that, as a crucial tumor suppressor, microRNA-101 suppresses cell proliferation, invasiveness and self-renewal in aggressive endometrial cancer cells via modulating multiple critical oncogenes. The microRNA-101-EZH2/MCL-1/FOS axis is a potential therapeutic target for endometrial cancer.
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Affiliation(s)
- Yosuke Konno
- Department of Gynecology, Hokkaido University, Sapporo, Japan; These authors contributed equally to this work
| | - Peixin Dong
- Department of Women's Health Educational System, Hokkaido University, Sapporo, Japan; These authors contributed equally to this work
| | - Ying Xiong
- Department of Gynecology, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China; These authors contributed equally to this work
| | - Fumihiko Suzuki
- Department of Obstetrics and Gynecology, Tohoku University, Sendai, Japan; These authors contributed equally to this work
| | - Jiabin Lu
- Department of Pathology, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
| | - Muyan Cai
- Department of Pathology, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
| | | | | | | | - Sharon J B Hanley
- Department of Women's Health Educational System, Hokkaido University, Sapporo, Japan
| | - Masataka Kudo
- Department of Gynecology, Hokkaido University, Sapporo, Japan
| | - Noriaki Sakuragi
- Department of Gynecology, Hokkaido University, Sapporo, Japan; Department of Women's Health Educational System, Hokkaido University, Sapporo, Japan
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Miao L, Wang L, Yuan H, Hang D, Zhu L, Du J, Zhu X, Li B, Wang R, Ma H, Chen N. MicroRNA-101 polymorphisms and risk of head and neck squamous cell carcinoma in a Chinese population. Tumour Biol 2015; 37:4169-74. [PMID: 26490987 DOI: 10.1007/s13277-015-4249-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 10/13/2015] [Indexed: 01/17/2023] Open
Abstract
MicroRNAs (miRNAs) play important roles in regulation of gene expressions and likely have involvement in cancer susceptibility and disease progression. MicroRNA-101 (miR-101) has been well established as a tumor suppressor, and aberrant expression of miR-101 levels has been previously reported in different malignancies including head and neck squamous cell carcinoma (HNSCC). However, the role of single nucleotide polymorphisms (SNPs) of miR-101 in the susceptibility to HNSCC remains unclear. In this study, we genotyped 11 selected SNPs of the miR-101 genes (including miR-101-1 and miR-101-2) in a case-control study including 576 HNSCC cases and 1552 cancer-free controls. For the main effect analysis, none of the 11 selected SNPs was associated with HNSCC risk. However, in the stratification analysis by tumor sites, rs578481 and rs705509 in pri-miR-101-1 were significantly associated with risk of oral squamous cell carcinoma (OSCC) (rs578481: adjusted odds ratio (OR) = 1.19, 95 % confidence interval (CI) 1.01-1.39, P = 0.036; rs705509: adjusted OR = 0.85, 95 % CI 0.73-0.98, P = 0.030). Furthermore, combined analysis of the two SNPs revealed that subjects carrying the risk alleles of rs578481 and rs705509 had increased risk of OSCC in a dose-response manner (P trend = 0.022). Compared with subjects carrying "0-2" risk alleles, subjects carrying "3-4" risk alleles presented a 1.38-fold increased risk of OSCC. In conclusion, our findings suggested that the SNPs rs578481 and rs705509 locating in pri-miR-101-1 may play a role in genetic susceptibility to OSCC, which may improve our understanding of the potential contribution of miRNA SNPs to cancer pathogenesis.
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Affiliation(s)
- Limin Miao
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
| | - Lihua Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Hua Yuan
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
| | - Dong Hang
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Longbiao Zhu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
| | - Jiangbo Du
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Xun Zhu
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Bing Li
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
| | - Ruixia Wang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China
| | - Hongxia Ma
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, 211166, China. .,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, 211166, China.
| | - Ning Chen
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, 210029, China. .,Institute of Stomatology, Nanjing Medical University, 140 Hanzhong Rd., Nanjing, People's Republic of China.
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Eichelser C, Stückrath I, Müller V, Milde-Langosch K, Wikman H, Pantel K, Schwarzenbach H. Increased serum levels of circulating exosomal microRNA-373 in receptor-negative breast cancer patients. Oncotarget 2015; 5:9650-63. [PMID: 25333260 PMCID: PMC4259427 DOI: 10.18632/oncotarget.2520] [Citation(s) in RCA: 262] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/28/2014] [Indexed: 01/05/2023] Open
Abstract
In this study, we compared the blood serum levels of circulating cell-free and exosomal microRNAs, and their involvement in the molecular subtypes of breast cancer patients. Our analyses on cell-free miR-101, miR-372 and miR-373 were performed in preoperative blood serum of 168 patients with invasive breast cancer, 19 patients with benign breast diseases and 28 healthy women. MicroRNAs were additionally quantified in exosomes of 50 cancer patients and 12 healthy women from the same cohort. Relative concentrations were measured by quantitative TaqMan MicroRNA assays and correlated to clinicopathological risk factors. The concentrations of cell-free miR-101 (p=0.013) and miR-373 (p=0.024) were significantly different between patients with breast cancer and benign tumors. A prevalence of miR-101, miR-372 and miR-373 were found in exosomes. The levels of circulating exosomal (but not cell-free) miR-373 were higher in triple negative than luminal carcinomas (p=0.027). Also, estrogen-negative (p=0.021) and progesterone-negative (p=0.01) tumors displayed higher concentrations of exosomal miR-373 than patients with hormone-receptor positive tumors. Overexpression of miR-373 by transfection of MCF-7 cells showed downregulated protein expression of the estrogen receptor, and inhibition of apoptosis induced by camptothecin. Our data indicate that serum levels of exosomal miR-373 are linked to triple negative and more aggressive breast carcinomas.
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Affiliation(s)
- Corinna Eichelser
- Department of Tumor Biology, University Medical Center Hamburg-Eppendorf, Germany
| | - Isabel Stückrath
- Department of Tumor Biology, University Medical Center Hamburg-Eppendorf, Germany
| | - Volkmar Müller
- Clinic of Gynecology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Karin Milde-Langosch
- Clinic of Gynecology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Harriet Wikman
- Department of Tumor Biology, University Medical Center Hamburg-Eppendorf, Germany
| | - Klaus Pantel
- Department of Tumor Biology, University Medical Center Hamburg-Eppendorf, Germany
| | - Heidi Schwarzenbach
- Department of Tumor Biology, University Medical Center Hamburg-Eppendorf, Germany
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Sun Y, Guo F, Bagnoli M, Xue FX, Sun BC, Shmulevich I, Mezzanzanica D, Chen KX, Sood AK, Yang D, Zhang W. Key nodes of a microRNA network associated with the integrated mesenchymal subtype of high-grade serous ovarian cancer. CHINESE JOURNAL OF CANCER 2015; 34:28-40. [PMID: 25556616 PMCID: PMC4302087 DOI: 10.5732/cjc.014.10284] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Metastasis is the main cause of cancer mortality. One of the initiating events of cancer metastasis of epithelial tumors is epithelial-to-mesenchymal transition (EMT), during which cells dedifferentiate from a relatively rigid cell structure/morphology to a flexible and changeable structure/morphology often associated with mesenchymal cells. The presence of EMT in human epithelial tumors is reflected by the increased expression of genes and levels of proteins that are preferentially present in mesenchymal cells. The combined presence of these genes forms the basis of mesenchymal gene signatures, which are the foundation for classifying a mesenchymal subtype of tumors. Indeed, tumor classification schemes that use clustering analysis of large genomic characterizations, like The Cancer Genome Atlas (TCGA), have defined mesenchymal subtype in a number of cancer types, such as high-grade serous ovarian cancer and glioblastoma. However, recent analyses have shown that gene expression-based classifications of mesenchymal subtypes often do not associate with poor survival. This “paradox” can be ameliorated using integrated analysis that combines multiple data types. We recently found that integrating mRNA and microRNA (miRNA) data revealed an integrated mesenchymal subtype that is consistently associated with poor survival in multiple cohorts of patients with serous ovarian cancer. This network consists of 8 major miRNAs and 214 mRNAs. Among the 8 miRNAs, 4 are known to be regulators of EMT. This review provides a summary of these 8 miRNAs, which were associated with the integrated mesenchymal subtype of serous ovarian cancer.
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Affiliation(s)
- Yan Sun
- Departments of Pathology, The Key Laboratory of Tianjin Cancer Prevention and Treatment, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, P. R. China. ,
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21
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Zheng M, Jiang YP, Chen W, Li KD, Liu X, Gao SY, Feng H, Wang SS, Jiang J, Ma XR, Cen X, Tang YJ, Chen Y, Lin YF, Tang YL, Liang XH. Snail and Slug collaborate on EMT and tumor metastasis through miR-101-mediated EZH2 axis in oral tongue squamous cell carcinoma. Oncotarget 2015; 6:6797-810. [PMID: 25762643 PMCID: PMC4466650 DOI: 10.18632/oncotarget.3180] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 01/25/2015] [Indexed: 02/05/2023] Open
Abstract
microRNAs(miRNAs) can regulate epithelial-mesenchymal transition (EMT) through transcription factors, however, little is known whether EMT transcription factors can modulate miRNAs and further induce EMT and cancer metastasis. Here we show that overexpression of Snail and Slug leads to a mesenchymal phenotype and morphology and enhances cell invasion along with stem cell properties in squamous cell carcinoma of oral tongue (OTSCC) cells. Repression of miR-101 expression by Snail and Slug is essential for Snail/Slug-induced malignant phenotypes. The suppression of miR-101 subsequently activates EZH2, the sole histone methyltransferase, inducing EMT, migration and invasion of OTSCC cells. Importantly, co-overexpression of Slug and Snail correlates with poor survival and elevated EZH2 expression in two independent patient cohorts of OTSCC specimens. These findings defined a Snail and Slug/miR-101/EZH2 pathway as a novel regulatory axis of EMT-mediated-microRNA signaling.
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Affiliation(s)
- Min Zheng
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
- Department of Stomatology, Zhoushan Hospital, Zhoushan, Zhejiang 316000, People's Republic of China
| | - Ya-ping Jiang
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
| | - Wei Chen
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
- Department of Oral and Maxillofacial Surgery, Tianjin Stomatological Hospital, Tianjin 300041, People's Republic of China
| | - Kai-de Li
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
| | - Xin Liu
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
| | - Shi-yu Gao
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
| | - Hao Feng
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
| | - Sha-sha Wang
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
| | - Jian Jiang
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
| | - Xiang-rui Ma
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
| | - Xiao Cen
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
| | - Ya-jie Tang
- Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei University of Technology, Wuhan 430068, People's Republic of China
| | - Yu Chen
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
| | - Yun-feng Lin
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
| | - Ya-ling Tang
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
- Department of Oral Pathology, West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
| | - Xin-hua Liang
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
- Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology (Sichuan University), Chengdu Sichuan 610041, People's Republic of China
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Role of microRNAs in cancers of the female reproductive tract: insights from recent clinical and experimental discovery studies. Clin Sci (Lond) 2014; 128:153-80. [PMID: 25294164 DOI: 10.1042/cs20140087] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
microRNAs (miRNAs) are small RNA molecules that represent the top of the pyramid of many tumorigenesis cascade pathways as they have the ability to affect multiple, intricate, and still undiscovered downstream targets. Understanding how miRNA molecules serve as master regulators in these important networks involved in cancer initiation and progression open up significant innovative areas for therapy and diagnosis that have been sadly lacking for deadly female reproductive tract cancers. This review will highlight the recent advances in the field of miRNAs in epithelial ovarian cancer, endometrioid endometrial cancer and squamous-cell cervical carcinoma focusing on studies associated with actual clinical information in humans. Importantly, recent miRNA profiling studies have included well-characterized clinical specimens of female reproductive tract cancers, allowing for studies correlating miRNA expression with clinical outcomes. This review will summarize the current thoughts on the role of miRNA processing in unique miRNA species present in these cancers. In addition, this review will focus on current data regarding miRNA molecules as unique biomarkers associated with clinically significant outcomes such as overall survival and chemotherapy resistance. We will also discuss why specific miRNA molecules are not recapitulated across multiple studies of the same cancer type. Although the mechanistic contributions of miRNA molecules to these clinical phenomena have been confirmed using in vitro and pre-clinical mouse model systems, these studies are truly only the beginning of our understanding of the roles miRNAs play in cancers of the female reproductive tract. This review will also highlight useful areas for future research regarding miRNAs as therapeutic targets in cancers of the female reproductive tract.
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Ubiquitin-specific protease 14 (USP14) regulates cellular proliferation and apoptosis in epithelial ovarian cancer. Med Oncol 2014; 32:379. [PMID: 25429837 DOI: 10.1007/s12032-014-0379-8] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 11/17/2014] [Indexed: 10/24/2022]
Abstract
Epithelial ovarian cancer (EOC) is the most lethal gynecologic malignancy. Thus, there is an emergent need to invest a novel therapeutic for EOC. In this study, we defined ubiquitin-specific protease 14 (USP14) as a therapeutic target for EOC. Western blot was used to evaluate the expression of USP14 in nine fresh EOC tissues and three fresh normal ovarian tissues. The protein level of USP14 was higher in the cancer samples compared with that in the normal ovary tissues. Immunohistochemistry analysis was performed on formalin-fixed paraffin-embedded section of 116 cases of EOCs and indicated that USP14 was significantly associated with clinical pathologic variables. Kaplan-Meier curve showed that high expression of USP14 was related to poor prognosis of EOC patients. Starvation and re-feeding assay was used to imitate cell cycle, suggesting that USP14 played a critical role in SKOV3 cell proliferation. CCK-8 assay showed that SKOV3 cells treated with USP14-shRNA (shUSP14) grew more slowly than control group. Flow cytometry revealed that the reduced expression of USP14 induced the apoptosis of the SKOV3 EOC cells. In summary, our findings suggest that USP14 is involved in the progression of EOC and that it may be a useful target of therapy in EOC.
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miR-101 regulates expression of EZH2 and contributes to progression of and cisplatin resistance in epithelial ovarian cancer. Tumour Biol 2014; 35:12619-26. [PMID: 25260883 DOI: 10.1007/s13277-014-2585-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Accepted: 08/29/2014] [Indexed: 01/02/2023] Open
Abstract
In order to determine the expression pattern of miR-101 in epithelial ovarian neoplasms and assess the functions and mechanism of miR-101 in tumorigenesis, we detected the expression of miR-101 and zeste homolog 2 (EZH2) in normal, benign, and malignant ovarian tissues and used miR-101 lentivirus infection to increase miR-101 expression in ovarian cancer cells and drug-resistant cancer cells. We found that miR-101 was underexpressed in epithelial ovarian cancer tissues, which significantly correlated with poor cell differentiation, advanced International Federation of Gynecology and Obstetrics (FIGO) stages, and ovarian cancer cell cisplatin resistance. miR-101 overexpression decreased the expression of EZH2, reduced proliferation and migration of ovarian cancer cells, and resensitized drug-resistant cancer cells to cisplatin-induced cytotoxicity, suggesting the important role miR-101 plays in ovarian cancer that may be associated with its function as a regulator targeting EZH2. Our findings show the potential of miR-101 as a diagnostic marker and new therapeutic target for patients with epithelial ovarian cancer.
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25
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Yao YL, Ma J, Wang P, Xue YX, Li Z, Zhao LN, Li ZQ, Feng TD, Liu YH. miR-101 acts as a tumor suppressor by targeting Kruppel-like factor 6 in glioblastoma stem cells. CNS Neurosci Ther 2014; 21:40-51. [PMID: 25230316 DOI: 10.1111/cns.12321] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Revised: 07/31/2014] [Accepted: 08/02/2014] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND AND AIMS Great interest persists in useful therapeutic targets in glioblastoma (GBM). Deregulation of microRNAs (miRNAs) expression has been associated with cancer formation through alterations in gene targets. In this study, we reported the role of miR-101 in human glioblastoma stem cells (GSCs) and the potential mechanisms. METHODS AND RESULTS Quantitative real-time PCR showed that miR-101 expression was decreased in GSCs. Overexpression of miR-101 reduced the proliferation, migration, invasion, and promoted apoptosis of GSCs. One direct target of miR-101, the transcription factor Kruppel-like factor 6 (KLF6), was identified using the Dual-Luciferase Reporter Assay System, which mediated the tumor suppressor activity of miR-101. This process was coincided with the reduced expression of Chitinase-3-like protein 1 (CHI3L1) whose promoter could be bound with and be promoted by KLF6 demonstrated by luciferase assays and chromatin immunoprecipitation assays. The downregulation of CHI3L1 led to the inactivation of MEK1/2 and PI3K signal pathways. Furthermore, nude mice carrying the tumors of overexpressed miR-101 combined with knockdown of KLF6 produced the smallest tumors and showed the highest survival rate. CONCLUSIONS Our findings provided a comprehensive analysis of miR-101 and further defining it as a potential therapeutic candidate for GBM.
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Affiliation(s)
- Yi-Long Yao
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, China
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Xie Y, Yao Q, Butt AM, Guo J, Tian Z, Bao X, Li H, Meng Q, Lu J. Expression profiling of serum microRNA-101 in HBV-associated chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma. Cancer Biol Ther 2014; 15:1248-55. [PMID: 24971953 DOI: 10.4161/cbt.29688] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
MicroRNAs (miRNAs) represent a class of evolutionarily conserved, non-coding small RNAs (18-25 nt) that have emerged as master regulators of several biological processes. Recently, circulating miRNAs have also been reported to be promising biomarkers for various pathological conditions. In the present study, we report the comparative expression profiling of microRNA-101 (miR-101) in serum and tissue samples from chronic hepatitis B (CHB), HBV-associated liver cirrhosis (HBV-LC), and HBV-associated hepatocellular carcinoma (HBV-HCC) patients and healthy controls. The serum miR-101 levels were found to be significantly downregulated in the HBV-HCC patients compared with the HBV-LC patients (P<0.001), CHB patients (P<0.001) and healthy controls but were upregulated in the HBV-LC patients compared with the CHB patients (P<0.001) and healthy controls (P<0.001). Consistent with the serum data, the expression of miR-101 was also upregulated and downregulated in the HBV-LC and HBV-HCC tissue samples, respectively. A receiver operating characteristic (ROC) analysis of serum miR-101 yielded an area under the ROC curve (AUC) of 0.976 with 95.5% sensitivity and 90.2% specificity when differentiating between HBV-HCC and HBV-LC. Our results suggest that the serum miR-101 level can serve as a potential non-invasive biomarker to differentiate HBV-HCC from HBV-LC.
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Affiliation(s)
- Yun Xie
- Hepatology and Cancer Biotherapy Ward; Beijing YouAn Hospital; Capital Medical University; Beijing, PR China
| | - Qinwei Yao
- Hepatology and Cancer Biotherapy Ward; Beijing YouAn Hospital; Capital Medical University; Beijing, PR China
| | - Azeem Mehmood Butt
- Centre of Excellence in Molecular Biology (CEMB); University of the Punjab; Lahore, Pakistan
| | - Jia Guo
- Hepatology and Cancer Biotherapy Ward; Beijing YouAn Hospital; Capital Medical University; Beijing, PR China
| | - Zhou Tian
- Hepatology and Cancer Biotherapy Ward; Beijing YouAn Hospital; Capital Medical University; Beijing, PR China
| | - Xuli Bao
- Hepatology and Cancer Biotherapy Ward; Beijing YouAn Hospital; Capital Medical University; Beijing, PR China
| | - Hongxia Li
- Hepatology and Cancer Biotherapy Ward; Beijing YouAn Hospital; Capital Medical University; Beijing, PR China
| | - Qinghua Meng
- Hepatology and Cancer Biotherapy Ward; Beijing YouAn Hospital; Capital Medical University; Beijing, PR China
| | - Jun Lu
- Hepatology and Cancer Biotherapy Ward; Beijing YouAn Hospital; Capital Medical University; Beijing, PR China
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Titone R, Morani F, Follo C, Vidoni C, Mezzanzanica D, Isidoro C. Epigenetic control of autophagy by microRNAs in ovarian cancer. BIOMED RESEARCH INTERNATIONAL 2014; 2014:343542. [PMID: 24877083 PMCID: PMC4022060 DOI: 10.1155/2014/343542] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 04/14/2014] [Indexed: 12/22/2022]
Abstract
Autophagy is a lysosomal-driven catabolic process that contributes to the preservation of cell homeostasis through the regular elimination of cellular damaged, aged, and redundant molecules and organelles. Autophagy plays dual opposite roles in cancer: on one hand it prevents carcinogenesis; on the other hand it confers an advantage to cancer cells to survive under prohibitive conditions. Autophagy has been implicated in ovarian cancer aggressiveness and in ovarian cancer cell chemoresistance and dormancy. Small noncoding microRNAs (miRNAs) regulate gene expression at posttranscriptional level, thus playing an important role in many aspects of cell pathophysiology, including cancerogenesis and cancer progression. Certain miRNAs have recently emerged as important epigenetic modulators of autophagy in cancer cells. The mRNA of several autophagy-related genes contains, in fact, the target sequence for miRNAs belonging to different families, with either oncosuppressive or oncogenic activities. MiRNA profiling studies have identified some miRNAs aberrantly expressed in ovarian cancer tissues that can impact autophagy. In addition, plasma and stroma cell-derived miRNAs in tumour-bearing patients can regulate the expression of relevant autophagy genes in cancer cells. The present review focuses on the potential implications of miRNAs regulating autophagy in ovarian cancer pathogenesis and progression.
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Affiliation(s)
- Rossella Titone
- Laboratory of Molecular Pathology, Department of Health Sciences, Centro di Biotecnologie per la Ricerca Medica Applicata, Università del Piemonte Orientale, Via P. Solaroli 17, 28100 Novara, Italy
| | - Federica Morani
- Laboratory of Molecular Pathology, Department of Health Sciences, Centro di Biotecnologie per la Ricerca Medica Applicata, Università del Piemonte Orientale, Via P. Solaroli 17, 28100 Novara, Italy
| | - Carlo Follo
- Laboratory of Molecular Pathology, Department of Health Sciences, Centro di Biotecnologie per la Ricerca Medica Applicata, Università del Piemonte Orientale, Via P. Solaroli 17, 28100 Novara, Italy
| | - Chiara Vidoni
- Laboratory of Molecular Pathology, Department of Health Sciences, Centro di Biotecnologie per la Ricerca Medica Applicata, Università del Piemonte Orientale, Via P. Solaroli 17, 28100 Novara, Italy
| | - Delia Mezzanzanica
- Unit of Molecular Therapies, Department of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy
| | - Ciro Isidoro
- Laboratory of Molecular Pathology, Department of Health Sciences, Centro di Biotecnologie per la Ricerca Medica Applicata, Università del Piemonte Orientale, Via P. Solaroli 17, 28100 Novara, Italy
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Guo F, Cogdell D, Hu L, Yang D, Sood AK, Xue F, Zhang W. MiR-101 suppresses the epithelial-to-mesenchymal transition by targeting ZEB1 and ZEB2 in ovarian carcinoma. Oncol Rep 2014; 31:2021-8. [PMID: 24677166 PMCID: PMC4020617 DOI: 10.3892/or.2014.3106] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Accepted: 11/14/2013] [Indexed: 12/19/2022] Open
Abstract
Ovarian carcinoma is the most lethal gynecologic malignancy; the majority of patients succumb to the disease within 5 years of diagnosis. The poor survival rate is attributed to diagnosis at advanced stage, when the tumor has metastasized. The epithelial-to-mesenchymal transition (EMT) is a necessary step toward metastatic tumor progression. Through integrated computational analysis, we recently identified a master microRNA (miRNA) network that includes miR-101 and regulates EMT in ovarian carcinoma. In the present study, we characterized the functions of miR-101. Using reporter gene assays, we demonstrated that miR-101 suppressed the expression of the E-cadherin repressors ZEB1 and ZEB2 by directly targeting the 3'-untranslated region (3'UTR) of both ZEB1 and ZEB2. Introduction of miR-101 significantly inhibited EMT and cell migration and invasion. Introducing cDNAs of ZEB1 and ZEB2 without 3'UTR abrogated miR-101-induced EMT alteration, respectively. Our findings showed that miR-101 represents a redundant mechanism for the miR-200 family that regulates EMT through two major E-cadherin transcriptional repressors.
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Affiliation(s)
- Fei Guo
- Department of Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
| | - David Cogdell
- Department of Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Limei Hu
- Department of Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Da Yang
- Department of Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Anil K Sood
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Fengxia Xue
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Wei Zhang
- Department of Pathology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA
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Saldanha SN, Tollefsbol TO. Pathway modulations and epigenetic alterations in ovarian tumorbiogenesis. J Cell Physiol 2014; 229:393-406. [PMID: 24105793 DOI: 10.1002/jcp.24466] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Accepted: 09/06/2013] [Indexed: 12/23/2022]
Abstract
Cellular pathways are numerous and are highly integrated in function in the control of cellular systems. They collectively regulate cell division, proliferation, survival and apoptosis of cells and mutagenesis of key genes that control these pathways can initiate neoplastic transformations. Understanding these pathways is crucial to future therapeutic and preventive strategies of the disease. Ovarian cancers are of three major types; epithelial, germ-cell, and stromal. However, ovarian cancers of epithelial origin, arising from the mesothelium, are the predominant form. Of the subtypes of ovarian cancer, the high-grade serous tumors are fatal, with low survival rate due to late detection and poor response to treatments. Close examination of preserved ovarian tissues and in vitro studies have provided insights into the mechanistic changes occurring in cells mediated by a few key genes. This review will focus on pathways and key genes of the pathways that are mutated or have aberrant functions in the pathology of ovarian cancer. Non-genetic mechanisms that are gaining prominence in the pathology of ovarian cancer, miRNAs and epigenetics, will also be discussed in the review.
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Affiliation(s)
- Sabita N Saldanha
- Department of Biology, University of Alabama at Birmingham, Birmingham, Alabama; Department of Biological Sciences, Alabama State University, Montgomery, Alabama
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Yin J, Wang M, Jin C, Qi Q. miR-101 sensitizes A549 NSCLC cell line to CDDP by activating caspase 3-dependent apoptosis. Oncol Lett 2013; 7:461-465. [PMID: 24396470 PMCID: PMC3881938 DOI: 10.3892/ol.2013.1725] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2013] [Accepted: 11/22/2013] [Indexed: 01/01/2023] Open
Abstract
MicroRNA-101 (miR-101) is evidently downregulated in several types of cancer, including non-small cell lung cancer (NSCLC), and is crucial in sensitizing cells to chemotherapy drugs. The aim of the present study was to investigate the correlation between miR-101 and chemosensitivity in the A549 NSCLC cell line. Here, we used the human A549 cell line for transfection with an miR-101 overexpressing vector and detected the cytotoxic acticity, proliferation and apoptosis of cis-diaminedichloroplatinum (CDDP) in A549-miR-101 and A549-mock cells. We demonstrated that overexpression of miR-101 sensitized A549 cells to CDDP, one of the most frequently used agents in curing or controlling NSCLC and enhanced CDDP-induced cell death and caspase 3-dependent apoptosis. In addition, miR-101 facilitated the inhibitory role of CDDP in A549 cell colony formation. Overall, the results of the present study demonstrated that miR-101 sensitizes the A549 NSCLC cell line to CDDP via the activation of caspase 3-dependent apoptosis.
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Affiliation(s)
- Jiqing Yin
- Department of General Practice, Shandong University Hospital, Shandong University, Jinan, Shandong 250061, P.R. China
| | - Mingguo Wang
- Department of Stomatology, Subsidiary Central Hospital, Shandong University, Jinan, Shandong 250061, P.R. China
| | - Cuixiang Jin
- Department of General Practice, Shandong University Hospital, Shandong University, Jinan, Shandong 250061, P.R. China
| | - Qingguo Qi
- Department of Stomatology, Stomatology Hospital of Shandong University, Jinan, Shandong 250061, P.R. China
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Batchu RB, Qazi AM, Gruzdyn OV, Semaan A, Seward SM, Chamala S, Dhulipala VB, Bouwman DL, Weaver DW, Gruber SA. EZH2-shRNA-mediated upregulation of p21waf1/cip1 and its transcriptional enhancers with concomitant downmodulation of mutant p53 in pancreatic ductal adenocarcinoma. Surgery 2013; 154:739-46; discussion 746-7. [PMID: 24074410 DOI: 10.1016/j.surg.2013.06.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 06/25/2013] [Indexed: 01/28/2023]
Abstract
PURPOSE Enhancer of zeste homologue 2 (EZH2), a component of the chromatin modification protein complex, is upregulated in pancreatic ductal adenocarcinoma (PDAC), whereas loss of p53 and its downstream target, p21(waf1/cip1), is also observed frequently. We sought to investigate the role of the p53-p21(waf1/cip1) pathway in relation to EZH2-mediated inhibition of PDAC. METHODS The PANC-1 cell line was utilized in chromatin immunoprecipitation, gene profiling, Western blot, cell invasion, cell proliferation, and tumor xenograft assays. RESULTS Western blot analysis with antibodies that recognize both wild-type and mutant p53 did not show any alterations in band intensity; however, antibody that detects only mutant p53 showed a band of significantly lesser intensity with EZH2 knockdown. Western blot analysis further revealed a significant upregulation of p21(waf1/cip1). Gene expression profile analysis indicated significantly enhanced transcripts of transcriptional inducers of p21(waf1/cip1), with downregulation of mutant p53 transcript, corroborating the Western blot analysis. PANC-1 cells expressing EZH2-short hairpin RNA displayed markedly attenuated growth in SCID mice. CONCLUSION Downregulation of mutant p53 with concomitant enhanced expression of p21(waf1/cip1) and its transcriptional trans-activators may contribute toward EZH2-mediated suppression of PDAC.
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Affiliation(s)
- Ramesh B Batchu
- Laboratory of Surgical Oncology & Developmental Therapeutics, Department of Surgery, Wayne State University, Detroit, MI; John D. Dingell VA Medical Center, Wayne State University, Detroit, MI.
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Orfanelli T, Jeong J, Doulaveris G, Holcomb K, Witkin S. Involvement of autophagy in cervical, endometrial and ovarian cancer. Int J Cancer 2013; 135:519-28. [DOI: 10.1002/ijc.28524] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Accepted: 09/18/2013] [Indexed: 01/06/2023]
Affiliation(s)
- T. Orfanelli
- Division of Immunology and Infectious Diseases; Department of Obstetrics and Gynecology; Weill Cornell Medical College; New York NY
| | - J.M. Jeong
- Division of Immunology and Infectious Diseases; Department of Obstetrics and Gynecology; Weill Cornell Medical College; New York NY
| | - G. Doulaveris
- Division of Immunology and Infectious Diseases; Department of Obstetrics and Gynecology; Weill Cornell Medical College; New York NY
| | - K. Holcomb
- Division of Gynecologic Oncology; Department of Obstetrics and Gynecology; Weill Cornell Medical College; New York NY
| | - S.S. Witkin
- Division of Immunology and Infectious Diseases; Department of Obstetrics and Gynecology; Weill Cornell Medical College; New York NY
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Huang F, Lin C, Shi YH, Kuerban G. MicroRNA-101 Inhibits Cell Proliferation, Invasion, and Promotes Apoptosis by Regulating Cyclooxygenase-2 in Hela Cervical Carcinoma Cells. Asian Pac J Cancer Prev 2013; 14:5915-20. [DOI: 10.7314/apjcp.2013.14.10.5915] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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The long noncoding RNA HOTAIR contributes to cisplatin resistance of human lung adenocarcinoma cells via downregualtion of p21(WAF1/CIP1) expression. PLoS One 2013; 8:e77293. [PMID: 24155936 PMCID: PMC3796503 DOI: 10.1371/journal.pone.0077293] [Citation(s) in RCA: 242] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Accepted: 08/30/2013] [Indexed: 01/17/2023] Open
Abstract
HOTAIR, a long intervening non-coding RNA (lincRNA), associates with the Polycomb Repressive Complex 2 (PRC2) and is reported to reprogram chromatin organization and promote tumor progression. However, little is known about the roles of this gene in the development of chemoresistance phenotype of lung adenocarcinoma (LAD). Thus, we investigated the involvement of HOTAIR in the resistance of LAD cells to cisplatin. In this study, we show that HOTAIR expression was significantly upregulated in cisplatin-resistant A549/DDP cells compared with in parental A549 cells. Knockdown of HOTAIR by RNA interference could resensitize the responses of A549/DDP cells to cisplatin both in vitro and in vivo. In contrast, overexpression of HOTAIR could decrease the sensitivity of A549 and SPC-A1 cells to cisplatin. We also found that the siRNA/HOTAIR1-mediated chemosensivity enhancement was associated with inhibition of cell proliferation, induction of G0/G1 cell-cycle arrest and apoptosis enhancement through regulation of p21WAF1/CIP1 (p21) expression. Also, pcDNA/p21or siRNA/p21 could mimic the effects of siRNA/HOTAIR1 or pcDNA/HOTAIR on the sensitivity of LAD cells to cisplatin. Importantly, siRNA/p21 or pcDNA/p21 could partially rescue the effects of siRNA/HOTAIR1 or pcDNA/HOTAIR on both p21 expression and cisplatin sensitivity in LAD cells. Further, HOTAIR was observed to be significantly downregulated in cisplatin-responding LAD tissues, and its expression was inversely correlated with p21 mRNA expression. Taken together, our findings suggest that upregulation of HOTAIR contributes to the cisplatin resistance of LAD cells, at least in part, through the regulation of p21 expression.
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Shen Z, Chen L, Yang X, Zhao Y, Pier E, Zhang X, Yang X, Xiong Y. Downregulation of Ezh2 methyltransferase by FOXP3: New insight of FOXP3 into chromatin remodeling? BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2013; 1833:2190-200. [DOI: 10.1016/j.bbamcr.2013.05.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 05/08/2013] [Accepted: 05/10/2013] [Indexed: 11/16/2022]
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Xiaoping L, Zhibin Y, Wenjuan L, Zeyou W, Gang X, Zhaohui L, Ying Z, Minghua W, Guiyuan L. CPEB1, a histone-modified hypomethylated gene, is regulated by miR-101 and involved in cell senescence in glioma. Cell Death Dis 2013; 4:e675. [PMID: 23788032 PMCID: PMC3702288 DOI: 10.1038/cddis.2013.197] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Epigenetic mechanisms have important roles in carcinogenesis. We certified that the mRNA translation-related gene cytoplasmic polyadenylation element-binding protein 1 (CPEB1) is hypomethylated and overexpressed in glioma cells and tissues. The knockdown of CPEB1 reduced cell senescence by regulating the expression or distribution of p53 in glioma cells. CPEB1 is also regulated directly by the tumor suppressor miR-101, a potential marker of glioma. It is known that the histone methyltransferase enhancer of zeste homolog 2 (EZH2) and embryonic ectoderm development (EED) are direct targets of miR-101. We demonstrated that miR-101 downregulated the expression of CPEB1 through reversing the methylation status of the CPEB1 promoter by regulating the presence on the promoter of the methylation-related histones H3K4me2, H3K27me3, H3K9me3 and H4K20me3. The epigenetic regulation of H3K27me3 on CPEB1 promoter is mediated by EZH2 and EED. EZH2 has a role in the regulation of H3K4me2. Furthermore, the downregulation of CPEB1 induced senescence in a p53-dependent manner.
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Affiliation(s)
- L Xiaoping
- Cancer Research Institute, Central South University, Changsha, China
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37
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Seward S, Semaan A, Qazi AM, Gruzdyn OV, Chamala S, Bryant CC, Kumar S, Cameron D, Sethi S, Ali-Fehmi R, Morris R, Bouwman DL, Munkarah AR, Weaver DW, Gruber SA, Batchu RB. EZH2 blockade by RNA interference inhibits growth of ovarian cancer by facilitating re-expression of p21(waf1/cip1) and by inhibiting mutant p53. Cancer Lett 2013; 336:53-60. [PMID: 23603558 DOI: 10.1016/j.canlet.2013.04.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 03/29/2013] [Accepted: 04/10/2013] [Indexed: 02/06/2023]
Abstract
The enhancer of zeste homolog 2 (EZH2) methyltransferase is a transcriptional repressor. EZH2 is abnormally elevated in epithelial ovarian cancer (EOC). We demonstrated that EZH2 knockdown inhibited cell growth, activated apoptosis, and enhanced chemosensitivity. Further, silencing of EZH2 resulted in re-expression of p21(waf1/cip1) and down-regulation of mutant p53. Finally, EZH2 knockdown contributed to attenuated EOC growth in SCID mice.
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Affiliation(s)
- Shelly Seward
- Laboratory of Surgical Oncology & Developmental Therapeutics, Department of Surgery, Wayne State University, Detroit, MI 48201, USA
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Zhao S, Yang G, Mu Y, Han D, Shi C, Chen X, Deng Y, Zhang D, Wang L, Liu Y, Hou X, Wang C, Wu J, Liu H, Wang L, Zhang G, Qi J, Fang X, Shi C, Ai J. MiR-106a is an independent prognostic marker in patients with glioblastoma. Neuro Oncol 2013; 15:707-17. [PMID: 23416698 DOI: 10.1093/neuonc/not001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Very little is known regarding correlation of micro RNA (miR)-106a with clinical outcomes of patients with glioblastoma multiforme (GBM). This study determined whether miR-106a could be used as an independent prognostic biomarker in those patients. METHODS A total of 156 GBM patients were divided into 2 cohorts. In the first cohort, matched fresh frozen and formalin-fixed paraffin-embedded (FFPE) samples were collected from 24 GBM patients, while in the second cohort, only FFPE samples were collected from 132 GBM patients. MiR-106a expression levels were examined by quantitative real-time PCR in the 2 cohorts and further validated by in situ hybridization assay in the second cohort. The correlation between miR-106a expression levels and overall survival was evaluated in the second cohort of 114 GBM patients available for follow-up by a log-rank test and a multivariate Cox proportional hazards model. RESULTS Our data showed a very good correlation of miR-106a or U6 expression between fresh frozen and FFPE GBM specimens, with Pearson's correlation coefficients of 0.849 and 0.823, respectively (P < .001). Their expression levels in archival FFPE samples were quite stable for at least 7 years when stored at room temperature. Multivariate analysis revealed that the expression level of miR-106a was an independent and significant predictor of overall survival in GBM patients (P = .011). CONCLUSIONS MiR-106a expression was relatively abundant and stable in a large cohort of archival FFPE GBM specimens and could be used as an independent prognostic biomarker in those patients. Thus, miR-106a can be used to predict prognosis and treatment response in individual GBM patients.
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Affiliation(s)
- Shiguang Zhao
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, People's Republic of China.
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Holohan KN, Lahiri DK, Schneider BP, Foroud T, Saykin AJ. Functional microRNAs in Alzheimer's disease and cancer: differential regulation of common mechanisms and pathways. Front Genet 2013; 3:323. [PMID: 23335942 PMCID: PMC3547332 DOI: 10.3389/fgene.2012.00323] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 12/24/2012] [Indexed: 01/12/2023] Open
Abstract
Two of the main research priorities in the United States are cancer and neurodegenerative diseases, which are attributed to abnormal patterns of cellular behavior. MicroRNAs (miRNA) have been implicated as regulators of cellular metabolism, and thus are an active topic of investigation in both disease areas. There is presently a more extensive body of work on the role of miRNAs in cancer compared to neurodegenerative diseases, and therefore it may be useful to examine whether there is any concordance between the functional roles of miRNAs in these diseases. As a case study, the roles of miRNAs in Alzheimer's disease (AD) and their functions in various cancers will be compared. A number of miRNA expression patterns are altered in individuals with AD compared with healthy older adults. Among these, some have also been shown to correlate with neuropathological changes including plaque and tangle accumulation, as well as expression levels of other molecules known to be involved in disease pathology. Importantly, these miRNAs have also been shown to have differential expression and or functional roles in various types of cancer. To examine possible intersections between miRNA functions in cancer and AD, we review the current literature on these miRNAs in cancer and AD, focusing on their roles in known biological pathways. We propose a pathway-driven model in which some molecular processes show an inverse relationship between cancer and neurodegenerative disease (e.g., proliferation and apoptosis) whereas others are more parallel in their activity (e.g., immune activation and inflammation). A critical review of these and other molecular mechanisms in cancer may shed light on the pathophysiology of AD, and highlight key areas for future research. Conclusions from this work may be extended to other neurodegenerative diseases for which some molecular pathways have been identified but which have not yet been extensively researched for miRNA involvement.
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Affiliation(s)
- Kelly N Holohan
- Department of Medical and Molecular Genetics, Indiana University School of Medicine Indianapolis, IN, USA
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Gui T, Shen K. miRNA-101: A potential target for tumor therapy. Cancer Epidemiol 2012; 36:537-40. [DOI: 10.1016/j.canep.2012.05.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Revised: 04/22/2012] [Accepted: 05/05/2012] [Indexed: 01/12/2023]
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Strillacci A, Valerii MC, Sansone P, Caggiano C, Sgromo A, Vittori L, Fiorentino M, Poggioli G, Rizzello F, Campieri M, Spisni E. Loss of miR-101 expression promotes Wnt/β-catenin signalling pathway activation and malignancy in colon cancer cells. J Pathol 2012; 229:379-89. [PMID: 22930392 DOI: 10.1002/path.4097] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 07/31/2012] [Accepted: 08/20/2012] [Indexed: 12/20/2022]
Abstract
Colorectal cancer (CRC) is the second leading cause of cancer-related mortality in Western countries. Although the aberrant expression of several microRNAs (oncomiRs) is associated with CRC progression, the molecular mechanisms of this phenomenon are still under investigation. Here we show that miR-101 expression is differentially impaired in CRC specimens, depending on tumour grade. miR-101 re-expression suppresses cell growth in 3D, hypoxic survival and invasive potential in CRC cells showing low levels of miR-101. Additionally, we provide molecular evidence of a bidirectional regulatory mechanism between miR-101 expression and important CRC pro-malignant features, such as inflammation, activation of the Wnt/β-catenin signalling pathway and epithelial-mesenchymal transition (EMT). We then propose that up-regulated miR-101 may function as a tumour suppressor in CRC and that its pharmacological restoration might hamper the aggressive behaviour of CRC in vivo. MiR-101 expression may also represent a cancer biomarker for CRC diagnosis and prognosis.
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Affiliation(s)
- Antonio Strillacci
- Department of Biology, University of Bologna, Via Selmi 3, Bologna, Italy.
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Zhang Y, Guo X, Xiong L, Kong X, Xu Y, Liu C, Zou L, Li Z, Zhao J, Lin N. MicroRNA-101 suppresses SOX9-dependent tumorigenicity and promotes favorable prognosis of human hepatocellular carcinoma. FEBS Lett 2012. [PMID: 23178713 DOI: 10.1016/j.febslet.2012.10.053] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We previously showed that high expression levels of SOX9 correlate with hepatocellular carcinoma (HCC) progression. However, the exact role that SOX9 plays in HCC remains unclear. In this study, we firstly confirmed that miRNA-101 directly targets SOX9 in HCC. Ectopic expression of miR-101 significantly inhibited HCC cell proliferation and tumorigenicity by targeting SOX9. Moreover, the down-regulation of miR-101 in clinical HCC tissues correlates with tumor aggressiveness and poor prognosis. Therefore, miR-101 may suppress HCC tumor progression by down-regulating SOX9. MiR-101 may be a potential prognostic marker and therapeutic target for HCC.
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Affiliation(s)
- Yanqiong Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, No. 16, Nanxiaojie, Dongzhimennei, Beijing 100700, China
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43
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Benetatos L, Voulgaris E, Vartholomatos G, Hatzimichael E. Non-coding RNAs and EZH2 interactions in cancer: long and short tales from the transcriptome. Int J Cancer 2012; 133:267-74. [PMID: 23001607 DOI: 10.1002/ijc.27859] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Accepted: 08/14/2012] [Indexed: 12/12/2022]
Abstract
A large amount of data indicates that non-coding RNAs represent more than the "dark matter" of the genome. Both microRNAs and long non-coding RNAs are involved in several fundamental biologic processes, and their deregulation may lead in oncogenesis. Interacting with the Polycomb-repressive complex 2 subunit EZH2, they could affect the expression of protein-coding genes and form feedback networks and autoregulatory loops. They can also form networks with upstream and downstream important factors, in which EZH2 represent the stabilizing factor of the pathway. As such non-coding RNAs affect the epigenetic modifications leading to malignant transformation.
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Wang R, Wang HB, Hao CJ, Cui Y, Han XC, Hu Y, Li FF, Xia HF, Ma X. MiR-101 is involved in human breast carcinogenesis by targeting Stathmin1. PLoS One 2012; 7:e46173. [PMID: 23071542 PMCID: PMC3469601 DOI: 10.1371/journal.pone.0046173] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 08/30/2012] [Indexed: 12/20/2022] Open
Abstract
Background MicroRNA-101 (miR-101) expression is negatively associated with tumor growth and blood vessel formation in several solid epithelial cancers. However, the role of miR-101 in human breast cancer remains elusive. Results MiR-101 was significantly decreased in different subtypes of human breast cancer tissues compared with that in adjacent normal breast tissues (P<0.01). Up-regulation of miR-101 inhibited cell proliferation, migration and invasion, and promoted cell apoptosis in ER alpha-positive and ER alpha-negative breast cancer cells and normal breast cells. Down-regulation of miR-101 displayed opposite effects on cell growth and metastasis. Further investigation revealed a significant inverse correlation between the expression of miR-101 and Stathmin1 (Stmn1), and miR-101 could bind to the 3′-untranslated region (UTR) of Stmn1 to inhibit Stmn1 translation. The inhibition of cell growth and metastasis induced by up-regulation of miR-101 was partially restored by overexpresson of Stmn1. Knockdown of Stmn1 attenuates the down-regulation of miR-101-mediated enhancement of cell growth and metastasis. More importantly, in vivo analysis found that Stmn1 mRNA and protein level in different subtypes of human breast cancer tissues, contrary to the down-regulation of miR-101, were significantly elevated. Conclusions This study demonstrates that down-regulation of miR-101 in different subtypes of human breast cancer tissues is linked to the increase of cellular proliferation and invasiveness via targeting Stmn1, which highlights novel regulatory mechanism in breast cancer and may provide valuable clues for the future clinical diagnosis of breast cancer.
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Affiliation(s)
- Rui Wang
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, China
- Graduate School, Peking Union Medical College, Beijing, China
| | - Hong-Bin Wang
- The Third Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chan Juan Hao
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, China
- Graduate School, Peking Union Medical College, Beijing, China
| | - Yi Cui
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, China
- Graduate School, Peking Union Medical College, Beijing, China
| | | | - Yi Hu
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, China
- Graduate School, Peking Union Medical College, Beijing, China
| | - Fei-Feng Li
- The Third Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hong-Fei Xia
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, China
- Graduate School, Peking Union Medical College, Beijing, China
- * E-mail: (H-FX); (XM)
| | - Xu Ma
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, China
- Graduate School, Peking Union Medical College, Beijing, China
- * E-mail: (H-FX); (XM)
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45
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Involvement of autophagy in ovarian cancer: a working hypothesis. J Ovarian Res 2012; 5:22. [PMID: 22974323 PMCID: PMC3506510 DOI: 10.1186/1757-2215-5-22] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 09/11/2012] [Indexed: 12/15/2022] Open
Abstract
Autophagy is a lysosomal-driven catabolic process that contributes to preserve cell and tissue homeostases through the regular elimination of damaged, aged and redundant self-constituents. In normal cells, autophagy protects from DNA mutation and carcinogenesis by preventive elimination of pro-oxidative mitochondria and protein aggregates. Mutations in oncogenes and oncosuppressor genes dysregulate autophagy. Up-regulated autophagy may confer chemo- and radio-resistance to cancer cells, and also a pro-survival advantage in cancer cells experiencing oxygen and nutrient shortage. This fact is the rationale for using autophagy inhibitors along with anti-neoplastic therapies. Yet, aberrant hyper-induction of autophagy can lead to cell death, and this phenomenon could also be exploited for cancer therapy. The actual level of autophagy in the cancer cell is greatly affected by vascularization, inflammation, and stromal cell infiltration. In addition, small non-coding microRNAs have recently emerged as important epigenetic modulators of autophagy. The present review focuses on the potential involvement of macroautophagy, and on its genetic and epigenetic regulation, in ovarian cancer pathogenesis and progression.
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Qazi AM, Gruzdyn O, Semaan A, Seward S, Chamala S, Dhulipala V, Sethi S, Ali-Fehmi R, Philip PA, Bouwman DL, Weaver DW, Gruber SA, Batchu RB. Restoration of E-cadherin expression in pancreatic ductal adenocarcinoma treated with microRNA-101. Surgery 2012; 152:704-11; discussion 711-3. [PMID: 22943841 DOI: 10.1016/j.surg.2012.07.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2012] [Accepted: 07/13/2012] [Indexed: 12/12/2022]
Abstract
PURPOSE To investigate the possibility of inhibiting the progression of pancreatic ductal adenocarcinoma (PDAC) by facilitating the expression of E-cadherin through the enforced expression of microRNA-101 (miR-101). METHODS In situ hybridization was conducted with archival tissue using a double digoxigenin-labeled probe. Chromatin immunoprecipitation (ChIP) assay was conducted with EZ-Magna ChIPTM A. Gene profile analysis, Western blot, and immunoprecipitation assays were performed using standard protocols. RESULTS We found that decreased miR-101 expression observed in archival patient tissues was significantly associated with poor prognosis indicated by low-intensity staining in high-grade tumors. ChIP assays using anti-enhancer of zeste homolog 2 (EZH2) antibodies indicated not only the interaction of EZH2 to the CDH1 (E-cadherin) promoter, but also that this interaction was significantly diminished in cells transfected with pre-miR-101. We observed a global downregulation of trimethylated lysine 27 of H3 histone (H3K27me3) along with upregulation of the enzymes histone deacetylase -1 and -2 with the re-expression of miR-101. Further, we observed lesser levels of transcriptional factors that inhibit the CDH1 promoter with pre-miR-101 treatment. Western blot analysis confirmed the enhanced E-cadherin expression. PANC-1 cells transduced with pre-miR-101 displayed markedly attenuated growth in SCID mice. CONCLUSION These results suggest the potential therapeutic use of miR-101-enforced expression for inhibition of PDAC.
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Affiliation(s)
- Aamer M Qazi
- Laboratory of Surgical Oncology & Developmental Therapeutics, Department of Surgery, Wayne State University School of Medicine, Detroit, MI 48201, USA
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