201
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Lamadrid-Romero M, Solís KH, Cruz-Reséndiz MS, Pérez JE, Díaz NF, Flores-Herrera H, García-López G, Perichart O, Reyes-Muñoz E, Arenas-Huertero F, Eguía-Aguilar P, Molina-Hernández A. Central nervous system development-related microRNAs levels increase in the serum of gestational diabetic women during the first trimester of pregnancy. Neurosci Res 2017; 130:8-22. [PMID: 28803788 DOI: 10.1016/j.neures.2017.08.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 08/03/2017] [Accepted: 08/07/2017] [Indexed: 01/14/2023]
Abstract
MicroRNAs are heterochronic molecules important during brain development, which could be altered by gestational diabetes mellitus (GDM). To explore these molecules in maternal serum, we performed an RT-qPCR analysis. Our results revealed the heterochronic character of some neural development-related microRNA in serum samples of pregnant women. In relation to the first trimester, higher levels of miR-183-5p, -200b-3p, and -125-5p in the second trimester, and higher levels of miR-137 in the third trimester, were found. Furthermore, an insult such as GDM led to higher levels of miR-183-5p, -200b-3p, -125-5p, and -1290 relative to the control in the first trimester, which might be related to changes in neurogenesis and cell proliferation. An in silico analysis suggested that increased microRNAs in the second trimester in the control contributed to cell proliferation and neuron differentiation and that the rise in miR-137 in the third trimester led to neuron maturation. In the diabetic, higher levels of the microRNAs in the first trimester suggested alterations in cell proliferation and neuron differentiation. In conclusion, we showed that fetal-related microRNAs can be detected in the serum of pregnant woman and exhibit temporary regulation during pregnancy and that microRNAs involved in cell proliferation and neuron differentiation are upregulated under GDM.
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Affiliation(s)
- M Lamadrid-Romero
- Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Departamento de Fisiología y Desarrollo Celular (Laboratorio de Investigación en Células Troncales y Biología del Desarrollo), Mexico; Posgrado en Ciencias Biológicas, Facultad de Ciencias-UNAM, Ciudad de México, Mexico
| | - K H Solís
- Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Departamento de Fisiología y Desarrollo Celular (Laboratorio de Investigación en Células Troncales y Biología del Desarrollo), Mexico
| | - M S Cruz-Reséndiz
- Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Departamento de Fisiología y Desarrollo Celular (Laboratorio de Investigación en Células Troncales y Biología del Desarrollo), Mexico; Posgrado en Ciencias Biológicas, Facultad de Ciencias-UNAM, Ciudad de México, Mexico
| | - J E Pérez
- Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Departamento de Fisiología y Desarrollo Celular (Laboratorio de Investigación en Células Troncales y Biología del Desarrollo), Mexico
| | - N F Díaz
- Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Departamento de Fisiología y Desarrollo Celular (Laboratorio de Investigación en Células Troncales y Biología del Desarrollo), Mexico
| | - H Flores-Herrera
- Instituto Nacional de Perinatología "Isidro Espinosa de Los Reyes", Departamento de Inmunobioquímica, Mexico
| | - G García-López
- Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Departamento de Fisiología y Desarrollo Celular (Laboratorio de Investigación en Células Troncales y Biología del Desarrollo), Mexico
| | - O Perichart
- Instituto Nacional de Perinatología "Isidro Espinosa de Los Reyes", Departamento de Nutrición, Mexico
| | - E Reyes-Muñoz
- Instituto Nacional de Perinatología "Isidro Espinosa de Los Reyes", Departamento de Endocrionología, Mexico
| | - F Arenas-Huertero
- Hospital Infantil de México "Federico Gómez", Laboratorio de Investigación en Patología Experimental, Mexico
| | - P Eguía-Aguilar
- Hospital Infantil de México "Federico Gómez", Departamento de Patología, Mexico
| | - A Molina-Hernández
- Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Departamento de Fisiología y Desarrollo Celular (Laboratorio de Investigación en Células Troncales y Biología del Desarrollo), Mexico.
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202
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Zhang Z, Gong Q, Li M, Xu J, Zheng Y, Ge P, Chi G. MicroRNA-124 inhibits the proliferation of C6 glioma cells by targeting Smad4. Int J Mol Med 2017; 40:1226-1234. [PMID: 28791348 DOI: 10.3892/ijmm.2017.3088] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Accepted: 07/20/2017] [Indexed: 11/06/2022] Open
Abstract
MicroRNA-124 (miR-124) has been shown to be downregulated in glioma; however, its biological functions in glioma are not yet fully understood. The aim of this study was to examine the Smad4‑dependent effects of miR‑124 on C6 glioma cell proliferation. In this study, the level of miR‑124 was found to be enhanced in C6 cells upon transfection with miR‑124 mimics, and the mechanisms of action of miR‑124 in C6 cells were investigated by reverse transcriptase-quantitative polymerase chain reaction, MTT assay, western blot analysis and luciferase reporter assays in vitro. The results revealed that miR‑124 expression was significantly lower in the C6 cells than in either normal rat brain tissue or astrocytes. Upon the overexpression of miR‑124, the proliferation of the C6 cells decreased and Smad4 expression was significantly suppressed. Smad4 was identified as a direct target of miR‑124 through luciferase reporter assays. Furthermore, miR‑124 was found to modulate signal transducer and activator of transcription 3 (Stat3) by downregulating Smad4 expression. Using small interfering RNA targeting Smad4 mRNA, we also confirmed that miR‑124 downregulated c‑Myc by modulating Smad4 expression. In addition, caspase‑3 expression was induced by miR‑124 overexpression, but not via Smad4 downregulation. On the whole, our results demonstrate that miR‑124 upregulation inhibits the growth of C6 glioma cells by targeting Smad4 directly. These findings may be clinically useful for the development of therapeutic strategies directed toward miR‑124 function in patients with glioma.
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Affiliation(s)
- Zechuan Zhang
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Qiaoyun Gong
- Eye Center, The Second Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Meiying Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Jinying Xu
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Yangyang Zheng
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Pengfei Ge
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Guangfan Chi
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun, Jilin 130021, P.R. China
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203
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Ames H, Halushka MK, Rodriguez FJ. miRNA Regulation in Gliomas: Usual Suspects in Glial Tumorigenesis and Evolving Clinical Applications. J Neuropathol Exp Neurol 2017; 76:246-254. [PMID: 28431179 DOI: 10.1093/jnen/nlx005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
In recent years, an increasing role for noncoding small RNAs (miRNA) has been uncovered in carcinogenesis. These oligonucleotides can promote degradation and/or inhibit translation of key mRNAs. Recent studies have also highlighted a possible role for miRNAs in adult and pediatric brain tumors, including high- and low-grade gliomas, medulloblastoma, ependymoma, and neoplasms associated with neurofibromatosis type 1. Gliomas represent the most common category of primary intraparenchymal brain tumors, and, for example, manipulation of signaling pathways, through inhibition of PTEN transcription appears to be an important function of miRNA dysregulation through miR-21, miR-106b, and miR-26a. Moreover, altered miRNA expression in gliomas play roles in the regulation of common tumorigenic processes, including receptor tyrosine kinase signaling, angiogenesis, invasion, suppression of differentiation, cell cycle enhancement, and inhibition of apoptosis. Suppression of differentiation requires the downregulation of a number of miRNAs that are both enriched in the brain and required for terminal glial differentiation, including miR-219 and miR-338. Our evolving understanding about the biology of gliomas make them attractive for miRNA study, given that recent evidence suggests that epigenetic and subtle genetic changes may contribute to their pathogenesis. Identification of key miRNAs also provides a rationale for developing robust biomarkers and inhibitory RNA strategies for therapeutic purposes in glioma patients.
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Affiliation(s)
- Heather Ames
- Division of Neuropathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Marc K Halushka
- Division of Cardiovascular Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Fausto J Rodriguez
- Division of Neuropathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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204
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MicroRNA Regulation of Glycolytic Metabolism in Glioblastoma. BIOMED RESEARCH INTERNATIONAL 2017; 2017:9157370. [PMID: 28804724 PMCID: PMC5539934 DOI: 10.1155/2017/9157370] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 06/22/2017] [Indexed: 12/20/2022]
Abstract
Glioblastoma (GBM) is the most aggressive and common malignant brain tumour in adults. A well-known hallmark of GMB and many other tumours is aerobic glycolysis. MicroRNAs (miRNAs) are a class of short nonprotein coding sequences that exert posttranscriptional controls on gene expression and represent critical regulators of aerobic glycolysis in GBM. In GBM, miRNAs regulate the expression of glycolytic genes directly and via the regulation of metabolism-associated tumour suppressors and oncogenic signalling pathways. This review aims to establish links between miRNAs expression levels, the expression of GBM glycolytic regulatory genes, and the malignant progression and prognosis of GBM. In this review, the involvement of 25 miRNAs in the regulation of glycolytic metabolism of GBM is discussed. Seven of these miRNAs have been shown to regulate glycolytic metabolism in other tumour types. Further eight miRNAs, which are differentially expressed in GBM, have also been reported to regulate glycolytic metabolism in other cancer types. Thus, these miRNAs could serve as potential glycolytic regulators in GBM but will require functional validation. As such, the characterisation of these molecular and metabolic signatures in GBM can facilitate a better understanding of the molecular pathogenesis of this disease.
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205
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Epigenetic silencing of microRNA-137 enhances ASCT2 expression and tumor glutamine metabolism. Oncogenesis 2017; 6:e356. [PMID: 28692032 PMCID: PMC5541711 DOI: 10.1038/oncsis.2017.59] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 05/16/2017] [Accepted: 05/29/2017] [Indexed: 02/07/2023] Open
Abstract
Tumor cells must activate specific transporters to meet their increased glutamine metabolic demands. Relative to other glutamine transporters, the ASC family transporter 2 (ASCT2, also called SLC1A5) is profoundly elevated in a wide spectrum of human cancers to coordinate metabolic reprogramming and malignant transformation. Understanding the molecular mechanisms whereby tumor cells frequently upregulate this transporter is therefore vital to develop potential strategies for transporter-targeted therapies. Combining in-silico algorithms with systemic experimental screening, we herein identify the tumor suppressor microRNA, miR-137, as an essential regulator that targets ASCT2 and cancer cell glutamine metabolism. Metabolic analysis shows that miR-137 derepression, similar to ASCT2 inactivation, significantly inhibits glutamine consumption and TCA cycle anaplerosis. Mechanistically, methyl-CpG-binding protein 2 (MeCP2) and DNA methyltransferases (DNMTs) cooperate to promote active methylation of the miR-137 promoter and inhibit its transcription, conversely reactivating ASCT2 expression and glutamine metabolism. Moreover, expression between miR-137 and ASCT2 is inversely correlated in tumor specimens from multiple cancer types, and ectopic ASCT2 expression markedly rescued miR-137 suppression of tumorigenesis. These findings thus elucidate a previously unreported mechanism responsible for ASCT2 deregulation in human cancers and identify ASCT2 as a critical downstream effector of miR-137, revealing a molecular link between DNA methylation, microRNA and tumor metabolism.
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206
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Tian R, Wang J, Yan H, Wu J, Xu Q, Zhan X, Gui Z, Ding M, He J. Differential expression of miR16 in glioblastoma and glioblastoma stem cells: their correlation with proliferation, differentiation, metastasis and prognosis. Oncogene 2017. [PMID: 28628119 PMCID: PMC5658672 DOI: 10.1038/onc.2017.182] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The function of miR16 in multiforme glioblastoma multiforme (GBM) and its stem cells (GSCs) remains elusive. To this end, we investigated the patterns of miR16 expression in these cells and their correlation with malignant behaviors and clinical outcomes. The levels of miR16 and its targeted genes in tumor tissue of GBM and GBM SGH44, U87, U251 cells as well as their stem cell counterparts were measured by qRT–PCR or western blot or immunohistochemistry. Luciferase reporter assay was used to confirm the binding of miR16 to 3′-UTR of its target genes. The effects of miR16 on malignant behaviors were investigated, including tumor cell viability, soft-agar colony formation, GSCs Matrigel colony forming and migration and invasion as well as nude mice xenograft model. Differentially expression patterns of miR16 in glioblastoma cells and GSCs cells were found in this study. Changes of miR16 targeted genes, Bcl2 (B cell lymphoma 2), CDK6 (Cyclin-dependent kinase 6), CCND1 (cyclin D1), CCNE1 (cyclin E1) and SOX5 were confirmed in glioblastoma cell lines and tissue specimens. In vitro and in vivo studies showed that tumor cell proliferation was inhibited by miR16 mimic, but enhanced by miR16 inhibitor. The expression level of miR16 positively correlates with GSCs differentiation, but negatively with the abilities of migration, motility, invasion and colony formation in glioblastoma cells. The inhibitory effects of miR16 on its target genes were also found in nude mice xenograft model. Our findings revealed that the miR16 functions as a tumor suppressor in GSCs and its association with prognosis in GBM.
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Affiliation(s)
- R Tian
- Department of Pathology, Anhui Provincial Hospital affiliated to Anhui Medical University and Anhui Provincial Cancer Hospital, Hefei, China
| | - J Wang
- Department of Pathology, Anhui Provincial Hospital affiliated to Anhui Medical University and Anhui Provincial Cancer Hospital, Hefei, China
| | - H Yan
- Department of Pathology, Anhui Provincial Hospital affiliated to Anhui Medical University and Anhui Provincial Cancer Hospital, Hefei, China
| | - J Wu
- Department of Pathology, Anhui Provincial Hospital affiliated to Anhui Medical University and Anhui Provincial Cancer Hospital, Hefei, China
| | - Q Xu
- Department of Pathology, Anhui Provincial Hospital affiliated to Anhui Medical University and Anhui Provincial Cancer Hospital, Hefei, China
| | - X Zhan
- Department of Pathology, Anhui Provincial Hospital affiliated to Anhui Medical University and Anhui Provincial Cancer Hospital, Hefei, China
| | - Z Gui
- Department of Pathology, Anhui Provincial Hospital affiliated to Anhui Medical University and Anhui Provincial Cancer Hospital, Hefei, China
| | - M Ding
- Department of Pathology, Anhui Provincial Hospital affiliated to Anhui Medical University and Anhui Provincial Cancer Hospital, Hefei, China
| | - J He
- Department of Pathology, Anhui Provincial Hospital affiliated to Anhui Medical University and Anhui Provincial Cancer Hospital, Hefei, China
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207
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Soleimani T, Falsafi N, Fallahi H. Dissection of Regulatory Elements During Direct Conversion of Somatic Cells Into Neurons. J Cell Biochem 2017; 118:3158-3170. [DOI: 10.1002/jcb.25944] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 02/21/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Tahereh Soleimani
- Bioinformatics LabDepartment of BiologySchool of SciencesRazi UniversityKermanshahIran
| | - Nafiseh Falsafi
- Bioinformatics LabDepartment of BiologySchool of SciencesRazi UniversityKermanshahIran
| | - Hossein Fallahi
- Bioinformatics LabDepartment of BiologySchool of SciencesRazi UniversityKermanshahIran
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208
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Margolin-Miller Y, Yanichkin N, Shichrur K, Toledano H, Ohali A, Tzaridis T, Michowitz S, Fichman-Horn S, Feinmesser M, Pfister SM, Witt H, Tabori U, Bouffet E, Ramaswamy V, Hawkins C, Taylor MD, Yaniv I, Avigad S. Prognostic relevance of miR-124-3p and its targetTP53INP1in pediatric ependymoma. Genes Chromosomes Cancer 2017; 56:639-650. [DOI: 10.1002/gcc.22467] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 04/18/2017] [Accepted: 04/19/2017] [Indexed: 11/10/2022] Open
Affiliation(s)
- Yulia Margolin-Miller
- Molecular Oncology, Felsenstein Medical Research Center, Rabin Medical Center; Petah Tikva Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - Natalia Yanichkin
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
- Pathology Department; Rabin Medical Center; Petah Tikva Israel
| | - Keren Shichrur
- Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel; Petah Tikva Israel
| | - Helen Toledano
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
- Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel; Petah Tikva Israel
| | - Anat Ohali
- Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel; Petah Tikva Israel
| | - Theophilos Tzaridis
- Division of Pediatric Neurooncology; German Cancer Research Center (DKFZ); Heidelberg Germany
| | - Shalom Michowitz
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
- Department of Neurosurgery; Schneider Children's Medical Center of Israel; Petah Tikva Israel
| | - Suzana Fichman-Horn
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
- Pathology Department; Rabin Medical Center; Petah Tikva Israel
| | - Meora Feinmesser
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
- Pathology Department; Rabin Medical Center; Petah Tikva Israel
| | - Stefan M. Pfister
- Division of Pediatric Neurooncology; German Cancer Research Center (DKFZ); Heidelberg Germany
| | - Hendrik Witt
- Department of Pediatric Oncology Hematology and Immunology; Children's Hospital, University of Heidelberg; Heidelberg Germany
| | - Uri Tabori
- Division of Hematology Oncology; Hospital for Sick Children, University of Toronto; Toronto Canada
| | - Eric Bouffet
- Division of Hematology Oncology; Hospital for Sick Children, University of Toronto; Toronto Canada
| | - Vijay Ramaswamy
- Division of Hematology Oncology; Hospital for Sick Children, University of Toronto; Toronto Canada
| | - Cynthia Hawkins
- Division of Hematology Oncology; Hospital for Sick Children, University of Toronto; Toronto Canada
| | - Michael D. Taylor
- Division of Hematology Oncology; Hospital for Sick Children, University of Toronto; Toronto Canada
| | - Isaac Yaniv
- Molecular Oncology, Felsenstein Medical Research Center, Rabin Medical Center; Petah Tikva Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
- Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel; Petah Tikva Israel
| | - Smadar Avigad
- Molecular Oncology, Felsenstein Medical Research Center, Rabin Medical Center; Petah Tikva Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
- Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel; Petah Tikva Israel
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209
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Li W, Yang W, Liu Y, Chen S, Chin S, Qi X, Zhao Y, Liu H, Wang J, Mei X, Huang P, Xu D. MicroRNA-378 enhances inhibitory effect of curcumin on glioblastoma. Oncotarget 2017; 8:73938-73946. [PMID: 29088758 PMCID: PMC5650313 DOI: 10.18632/oncotarget.17881] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 03/30/2017] [Indexed: 12/12/2022] Open
Abstract
Glioblastoma multiforme is the most aggressive and common primary brain tumor, and is virtually incurable due to its therapeutic resistance to radiation and chemotherapy. Curcumin is a well-known phytochemical exhibiting antitumor activity on many human cancers including glioblastoma multiforme. Given the unique miRNA expression profiles in cancer cells compared to non-cancerous cells, we investigated whether these miRNA could be used to cancer therapy. In this report we show that miR-378, a glioblastoma multiforme down regulated miRNA, may enhance the inhibitory effect of curcumin on this cancer growth. Our results indicated that the inhibitory effect of curcumin was enhanced in miR-378-expressing stable U87 cells in vitro and in vivo, compared to control cells. MiR-378 was found to target p-p38 expression, underlying the observed phenotypic changes. Thus, we concluded that miR-378 enhances the response of glioblastoma multiforme to curcumin treatment, by targeting p38.
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Affiliation(s)
- Wende Li
- Laboratory of Traditional Chinese Medicine and Marine Drugs, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.,Edwin L. Steele Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.,Guangdong Laboratory Animals Monitoring Institute, Guangdong Key Laboratory of Laboratory Animals, Guangzhou 510663, China
| | - Weining Yang
- Sunnybrook Health Sciences Centre and Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Yujiao Liu
- Edwin L. Steele Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Siyu Chen
- Guangdong Laboratory Animals Monitoring Institute, Guangdong Key Laboratory of Laboratory Animals, Guangzhou 510663, China
| | - Shanmin Chin
- Edwin L. Steele Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Xiaolong Qi
- Edwin L. Steele Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Yingchao Zhao
- Cancer center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Hao Liu
- Edwin L. Steele Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Jiasheng Wang
- Laboratory of Traditional Chinese Medicine and Marine Drugs, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xueting Mei
- Laboratory of Traditional Chinese Medicine and Marine Drugs, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Peigen Huang
- Edwin L. Steele Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Donghui Xu
- Laboratory of Traditional Chinese Medicine and Marine Drugs, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
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210
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Feng Q, Wu Q, Liu X, Xiong Y, Li H. MicroRNA-137 acts as a tumor suppressor in osteosarcoma by targeting enhancer of zeste homolog 2. Exp Ther Med 2017; 13:3167-3174. [PMID: 28587390 PMCID: PMC5450755 DOI: 10.3892/etm.2017.4435] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 10/28/2016] [Indexed: 12/14/2022] Open
Abstract
MicroRNA (miR) are short non-coding RNA that bind to the 3′-untranslational region of their target genes, inhibiting translation and causing mRNA degradation. miR deregulation has been implicated in human cancer; however, the detailed regulatory mechanism of miR-137 in osteosarcoma (OS) remains largely unknown. In the present study, miR-137 and enhancer of zeste homologue 2 (EZH2) mRNA and protein expression levels were analyzed using reverse transcription-quantitative polymerase chain reaction and western blotting, respectively. MTT and transwell assays were performed to evaluate cell viability and invasion capacities and a luciferase reporter gene assay was used to determine the targeting relationship. The results of the current study indicated that miR-137 expression was significantly downregulated in OS tissues and cell lines (P<0.01). Moreover, it was observed that low miR-137 expression levels were significantly associated with lung metastasis and advanced TMN stage (P<0.05), but not associated with age, gender, tumor size, location, serum lactate dehydrogenase or serum alkaline phosphatase. Increasing levels of miR-137 significantly inhibited U2OS cell viability and invasion (P<0.01). By contrast, knockdown of miR-137 markedly increased U2OS cell viability and invasion. EZH2 was identified as a direct target gene of miR-137 in U2OS cells by luciferase reporter assay and EZH2 expression was found to be significantly increased in OS tissues and cell lines (P<0.01). EZH2 was significantly downregulated following miR-137 overexpression (P<0.01), and was upregulated following miR-137 knockdown in U2OS cells. Furthermore, EZH2 overexpression significantly attenuated the suppressive effects of miR-137 on U2OS cell viability and invasion (P<0.01), suggesting that miR-137 inhibits the viability and invasion of OS cells by targeting EZH2. Therefore, the results of the current study suggest that the miR-137/EZH2 axis may be a potential target for novel potential therapeutic strategies to treat OS.
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Affiliation(s)
- Qiong Feng
- Nursing School, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Qing Wu
- Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Xing Liu
- Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Yanfei Xiong
- Department of Orthopedics, Jing An Hospital, Yichun, Jiangxi 330600, P.R. China
| | - Hui Li
- Department of Immunology and Microbiology, Medical School of Jishou University, Jishou, Hunan 416000, P.R. China
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211
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Xu L, Liu H, Yan Z, Sun Z, Luo S, Lu Q. Inhibition of the Hedgehog signaling pathway suppresses cell proliferation by regulating the Gli2/miR-124/AURKA axis in human glioma cells. Int J Oncol 2017; 50:1868-1878. [PMID: 28393219 DOI: 10.3892/ijo.2017.3946] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 03/22/2017] [Indexed: 11/06/2022] Open
Abstract
Multiple lines of evidence indicate that aberrant activation of Hedgehog (Hh) signaling plays an important role in tumorigenesis in human glioma. However, the underlying molecular mechanism and crucial downstream targets of glioma-associated oncogene (Gli), a primary transcriptional regulator of Hh signaling, are not fully understood. Here, we report the identification of miR-124 as a novel downstream target of the transcriptional factor Gli2, which is important for proliferation and tumor growth in human glioma cells. Blockade of Hh signaling leads to a remarkable increase in miR-124 expression in glioma cells, whereas overexpression of Gli2 suppresses miR-124 expression by increasing the direct binding of Gli2 to the upstream region of the transcriptional start site for miR-124. Furthermore, we found that miR-124 potentially interacts with the 3'-UTR region of AURKA. Overexpression of miR-124 significantly decreased the expression of AURKA in glioma cells. In contrast, the loss of miR-124 led to the increased expression of AURKA mRNA and protein. In addition, cell proliferation and colony formation ability were significantly decreased following Gli2 knockdown in human glioma cells, while transfection with a miR-124 inhibitor rescued the proliferative ability of cells. These results demonstrate that miR-124 is an important downstream target gene of Hh signaling, and the Gli2/miR-124/AURKA axis is essential for the proliferation and growth of human glioma cells.
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Affiliation(s)
- Liyao Xu
- Center for Experimental Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Hua Liu
- Center for Experimental Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Zhangming Yan
- MOE Key Laboratory of Bioinformatics, School of Life Science, Tsinghua University, Beijing 100084, P.R. China
| | - Zhirong Sun
- MOE Key Laboratory of Bioinformatics, School of Life Science, Tsinghua University, Beijing 100084, P.R. China
| | - Shiwen Luo
- Center for Experimental Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Quqin Lu
- Department of Biostatistics and Epidemiology, School of Public Health, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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212
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Glaser T, Han I, Wu L, Zeng X. Targeted Nanotechnology in Glioblastoma Multiforme. Front Pharmacol 2017; 8:166. [PMID: 28408882 PMCID: PMC5374154 DOI: 10.3389/fphar.2017.00166] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 03/14/2017] [Indexed: 01/08/2023] Open
Abstract
Gliomas, and in particular glioblastoma multiforme, are aggressive brain tumors characterized by a poor prognosis and high rates of recurrence. Current treatment strategies are based on open surgery, chemotherapy (temozolomide) and radiotherapy. However, none of these treatments, alone or in combination, are considered effective in managing this devastating disease, resulting in a median survival time of less than 15 months. The efficiency of chemotherapy is mainly compromised by the blood-brain barrier (BBB) that selectively inhibits drugs from infiltrating into the tumor mass. Cancer stem cells (CSCs), with their unique biology and their resistance to both radio- and chemotherapy, compound tumor aggressiveness and increase the chances of treatment failure. Therefore, more effective targeted therapeutic regimens are urgently required. In this article, some well-recognized biological features and biomarkers of this specific subgroup of tumor cells are profiled and new strategies and technologies in nanomedicine that explicitly target CSCs, after circumventing the BBB, are detailed. Major achievements in the development of nanotherapies, such as organic poly(propylene glycol) and poly(ethylene glycol) or inorganic (iron and gold) nanoparticles that can be conjugated to metal ions, liposomes, dendrimers and polymeric micelles, form the main scope of this summary. Moreover, novel biological strategies focused on manipulating gene expression (small interfering RNA and clustered regularly interspaced short palindromic repeats [CRISPR]/CRISPR associated protein 9 [Cas 9] technologies) for cancer therapy are also analyzed. The aim of this review is to analyze the gap between CSC biology and the development of targeted therapies. A better understanding of CSC properties could result in the development of precise nanotherapies to fulfill unmet clinical needs.
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Affiliation(s)
- Talita Glaser
- Department of Biochemistry, Institute of Chemistry, University of São PauloSão Paulo, Brazil
| | - Inbo Han
- Department of Neurosurgery, Spine Center, CHA University, CHA Bundang Medical CenterSeongnam, South Korea
| | - Liquan Wu
- Department of Neurosurgery, Renmin Hospital of Wuhan UniversityWuhan, China
| | - Xiang Zeng
- Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen UniversityGuangzhou, China
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213
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Chen R, Zhang Y, Zhang C, Wu H, Yang S. miR-137 inhibits the proliferation of human non-small cell lung cancer cells by targeting SRC3. Oncol Lett 2017; 13:3905-3911. [PMID: 28521488 DOI: 10.3892/ol.2017.5904] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 01/17/2017] [Indexed: 12/21/2022] Open
Abstract
Non-small cell lung cancer (NSCLC) is the most common type of lung cancer. The results of the present study demonstrate that high expression of microRNA (miR)-137 and low expression of steroid receptor coactivator-3 (SRC3) had a significant negative correlation in 40 NSCLC tissue samples. In addition, cell colony formation and proliferation was significantly reduced in miR-137-transfected A549 and NCI-H838 cells compared with scramble-transfected NSCLC cell lines. miR-137 was identified to induce G1/S cell cycle arrest and dysregulate the mRNA expression of cell cycle-associated proteins (proliferating cell nuclear antigen, cyclin E, cyclin A1, cyclin A2 and p21) in NSCLC cells. Notably, miR-137 could significantly suppress SRC3 3' untranslated region (UTR) luciferase-reporter activity, an effect that was not detectable when the putative 3'-UTR target-site was mutated, further clarifying the molecular mechanisms underlying the role of miR-137 in NSCLC. In conclusion, the results of the present study suggest that miR-137 suppresses NSCLC cell proliferation by partially targeting SRC3.
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Affiliation(s)
- Ruilin Chen
- Department of Respiratory Medicine, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi 710068, P.R. China
| | - Yongqing Zhang
- Department of Respiratory Medicine, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi 710068, P.R. China
| | - Chengcheng Zhang
- Department of Respiratory Medicine, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi 710068, P.R. China
| | - Hua Wu
- Department of Respiratory Medicine, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi 710068, P.R. China
| | - Shumei Yang
- Department of Respiratory Medicine, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi 710068, P.R. China
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214
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Choe N, Kwon DH, Shin S, Kim YS, Kim YK, Kim J, Ahn Y, Eom GH, Kook H. The microRNA miR-124 inhibits vascular smooth muscle cell proliferation by targeting S100 calcium-binding protein A4 (S100A4). FEBS Lett 2017; 591:1041-1052. [PMID: 28235243 DOI: 10.1002/1873-3468.12606] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/08/2017] [Accepted: 02/17/2017] [Indexed: 12/21/2022]
Abstract
S100 calcium-binding protein A4 (S100A4) induces proliferation and migration of vascular smooth muscle cells (VSMCs). We aimed to find the microRNA regulating S100A4 expression. S100A4 transcripts are abruptly increased in the acute phase of carotid arterial injury 1 day later (at day 1) but gradually decreases at days 7 and 14. Bioinformatics analysis reveals that miR-124 targets S100A4. VSMC survival is attenuated by miR-124 mimic but increased by miR-124 inhibitor. miR-124 decreases immediately after carotid arterial injury but dramatically increases at days 7 and 14. miR-124 inhibitor-induced cell proliferation is blocked by S100A4 siRNA, whereas miR-124-induced cell death is recovered by S100A4. Our findings suggest that miR-124 is a novel regulator of VSMC proliferation and may play a role in the development of neointimal proliferation.
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Affiliation(s)
- Nakwon Choe
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, Korea.,Basic Research Laboratory for Cardiac Remodeling, Chonnam National University Medical School, Gwangju, Korea
| | - Duk-Hwa Kwon
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, Korea.,Basic Research Laboratory for Cardiac Remodeling, Chonnam National University Medical School, Gwangju, Korea
| | - Sera Shin
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, Korea.,Basic Research Laboratory for Cardiac Remodeling, Chonnam National University Medical School, Gwangju, Korea
| | - Yong Sook Kim
- Department of Cardiology, Chonnam National University Hospital, Gwangju, Korea
| | - Young-Kook Kim
- Basic Research Laboratory for Cardiac Remodeling, Chonnam National University Medical School, Gwangju, Korea.,Department of Biochemistry, Chonnam National University Medical School, Gwangju, Korea
| | - Jaetaek Kim
- Basic Research Laboratory for Cardiac Remodeling, Chonnam National University Medical School, Gwangju, Korea.,Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Youngkeun Ahn
- Department of Cardiology, Chonnam National University Hospital, Gwangju, Korea
| | - Gwang H Eom
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, Korea.,Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Korea
| | - Hyun Kook
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, Korea.,Basic Research Laboratory for Cardiac Remodeling, Chonnam National University Medical School, Gwangju, Korea
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215
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Doeppner TR, Kaltwasser B, Sanchez-Mendoza EH, Caglayan AB, Bähr M, Hermann DM. Lithium-induced neuroprotection in stroke involves increased miR-124 expression, reduced RE1-silencing transcription factor abundance and decreased protein deubiquitination by GSK3β inhibition-independent pathways. J Cereb Blood Flow Metab 2017; 37:914-926. [PMID: 27126323 PMCID: PMC5363471 DOI: 10.1177/0271678x16647738] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Lithium promotes acute poststroke neuronal survival, which includes mechanisms that are not limited to GSK3β inhibition. However, whether lithium induces long-term neuroprotection and enhanced brain remodeling is unclear. Therefore, mice were exposed to transient middle cerebral artery occlusion and lithium (1 mg/kg bolus followed by 2 mg/kg/day over up to 7 days) was intraperitoneally administered starting 0-9 h after reperfusion onset. Delivery of lithium no later than 6 h reduced infarct volume on day 2 and decreased brain edema, leukocyte infiltration, and microglial activation, as shown by histochemistry and flow cytometry. Lithium-induced neuroprotection persisted throughout the observation period of 56 days and was associated with enhanced neurological recovery. Poststroke angioneurogenesis and axonal plasticity were also enhanced by lithium. On the molecular level, lithium increased miR-124 expression, reduced RE1-silencing transcription factor abundance, and decreased protein deubiquitination in cultivated cortical neurons exposed to oxygen-glucose deprivation and in brains of mice exposed to cerebral ischemia. Notably, this effect was not mimicked by pharmacological GSK3β inhibition. This study for the first time provides efficacy data for lithium in the postacute ischemic phase, reporting a novel mechanism of action, i.e. increased miR-124 expression facilitating REST degradation by which lithium promotes postischemic neuroplasticity and angiogenesis.
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Affiliation(s)
- Thorsten R Doeppner
- 1 Department of Neurology, University of Duisburg-Essen, Essen, Germany.,2 Regenerative and Restorative Medical Research Center, Istanbul Medipol University, Istanbul, Turkey.,3 Department of Neurology, University of Göttingen Medical School, Göttingen, Germany
| | - Britta Kaltwasser
- 1 Department of Neurology, University of Duisburg-Essen, Essen, Germany
| | | | - Ahmet B Caglayan
- 2 Regenerative and Restorative Medical Research Center, Istanbul Medipol University, Istanbul, Turkey
| | - Mathias Bähr
- 3 Department of Neurology, University of Göttingen Medical School, Göttingen, Germany
| | - Dirk M Hermann
- 1 Department of Neurology, University of Duisburg-Essen, Essen, Germany
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216
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Hassan A, Mosley J, Singh S, Zinn PO. A Comprehensive Review of Genomics and Noncoding RNA in Gliomas. Top Magn Reson Imaging 2017; 26:3-14. [PMID: 28079712 DOI: 10.1097/rmr.0000000000000111] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Glioblastoma (GBM) is the most malignant primary adult brain tumor. In spite of our greater understanding of the biology of GBMs, clinical outcome of GBM patients remains poor, as their median survival with best available treatment is 12 to 18 months. Recent efforts of The Cancer Genome Atlas (TCGA) have subgrouped patients into 4 molecular/transcriptional subgroups: proneural, neural, classical, and mesenchymal. Continuing efforts are underway to provide a comprehensive map of the heterogeneous makeup of GBM to include noncoding transcripts, genetic mutations, and their associations to clinical outcome. In this review, we introduce key molecular events (genetic and epigenetic) that have been deemed most relevant as per studies such as TCGA, with a specific focus on noncoding RNAs such as microRNAs (miRNA) and long noncoding RNAs (lncRNA). One of our main objectives is to illustrate how miRNAs and lncRNAs play a pivotal role in brain tumor biology to define tumor heterogeneity at molecular and cellular levels. Ultimately, we elaborate how radiogenomics-based predictive models can describe miRNA/lncRNA-driven networks to better define heterogeneity of GBM with clinical relevance.
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Affiliation(s)
- Ahmed Hassan
- *Department of Diagnostic Radiology †Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center ‡Department of Neurosurgery, Baylor College of Medicine, Houston, TX
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217
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Leichter AL, Sullivan MJ, Eccles MR, Chatterjee A. MicroRNA expression patterns and signalling pathways in the development and progression of childhood solid tumours. Mol Cancer 2017; 16:15. [PMID: 28103887 PMCID: PMC5248531 DOI: 10.1186/s12943-017-0584-0] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 01/04/2017] [Indexed: 12/18/2022] Open
Abstract
The development of childhood solid tumours is tied to early developmental processes. These tumours may be complex and heterogeneous, and elucidating the aberrant mechanisms that alter the early embryonic environment and lead to disease is essential to our understanding of how these tumours function. MicroRNAs (miRNAs) are vital regulators of gene expression at all stages of development, and their crosstalk via developmental signalling pathways is essential for orchestrating regulatory control in processes such as proliferation, differentiation and apoptosis of cells. Oncogenesis, from aberrant miRNA expression, can occur through amplification and overexpression of oncogenic miRNAs (oncomiRs), genetic loss of tumour suppressor miRNAs, and global miRNA reduction from genetic and epigenetic alterations in the components regulating miRNA biogenesis. While few driver mutations have been identified in many of these types of tumours, abnormal miRNA expression has been found in a number of childhood solid tumours compared to normal tissue. An exploration of the network of key developmental pathways and interacting miRNAs may provide insight into the development of childhood solid malignancies and how key regulators are affected. Here we present a comprehensive introduction to the roles and implications of miRNAs in normal early development and childhood solid tumours, highlighting several tumours in depth, including embryonal brain tumours, neuroblastoma, osteosarcoma, Wilms tumour, and hepatoblastoma. In light of recent literature describing newer classifications and subtyping of tumours based on miRNA profiling, we discuss commonly identified miRNAs, clusters or families associated with several solid tumours and future directions for improving therapeutic approaches.
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Affiliation(s)
- Anna L Leichter
- Department of Pathology, Dunedin School of Medicine, University of Otago, 56 Hanover Street, P.O. Box 913, Dunedin, 9016, New Zealand
| | | | - Michael R Eccles
- Department of Pathology, Dunedin School of Medicine, University of Otago, 56 Hanover Street, P.O. Box 913, Dunedin, 9016, New Zealand. .,Maurice Wilkins Centre for Molecular Biodiscovery, Level 2, 3A Symonds Street, Auckland, New Zealand.
| | - Aniruddha Chatterjee
- Department of Pathology, Dunedin School of Medicine, University of Otago, 56 Hanover Street, P.O. Box 913, Dunedin, 9016, New Zealand. .,Maurice Wilkins Centre for Molecular Biodiscovery, Level 2, 3A Symonds Street, Auckland, New Zealand.
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218
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Liu X, Yang J, Deng W. The inflammatory cytokine IL-22 promotes murine gliomas via proliferation. Exp Ther Med 2017; 13:1087-1092. [PMID: 28450947 DOI: 10.3892/etm.2017.4059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 05/16/2016] [Indexed: 01/01/2023] Open
Abstract
Interleukin (IL)-22 is newly identified proinflammatory cytokine involved in the T helper (Th)17 and Th22 response. However, the possible role of IL-22 in glioma remains uncertain. The results of the present study demonstrated higher expression levels of IL-22 and the receptor IL-22BP in the brain of GL261 glioma-inoculation mice, suggesting the regulatory role of IL-22 in glioma. Injection of IL-22 increased the severity of glioma in vivo and higher expression levels of IL-6, IL-1β and tumor necrosis factor (TNF)-α were detected in the brain using ELISA following IL-22 injection. To elucidate the mechanism underlying the effects of IL-22, the present study aimed firstly to determine the expression levels of IL-22 receptor in a glioma cell line via reverse transcription quantitative polymerase chain reaction. IL-22 treatment significantly increased the expression levels of signal transducer and activator of transcription (STAT)3 and the mRNA expression levels of STAT6 compared with the vehicle control. These results suggested that IL-22 may activate the Janus kinase (JAK)/STAT signaling pathway in glioma. Furthermore, IL-22 positively regulated the proliferation of glioma, consistent with its role in vivo. Conversely, IL-22-deficient mice exhibited prolonged survival compared with wild-type (WT) mice, and the expression levels of inflammatory cytokines were decreased in the brain of IL-22 knock-out (KO) mice compared with WT mice. Concordant with these results, it was observed that IL-22-neutralising antibody was able to increase the survival of mice with glioma and attenuate the disease by significantly reducing the cytokine levels in the brain. In conclusion, the results of the present study demonstrated that expression levels of IL-22 in the brain of mice with glioma may enhance symptoms due to the increased cytokine production of IL-6, IL-1β and TNF-α; this is consistent with IL-6/JAK/STAT signalling activation in vitro. Decreasing the expression levels of IL-22, achieved either with IL-22-KO mice or IL-22-neutralising antibody demonstrated protective effects on glioma development. Therefore, IL-22 may serve as a potential therapeutic target for glioma.
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Affiliation(s)
- Xiguo Liu
- Department of Head and Neck and Neurosurgery, Hubei Cancer Hospital, Wuhan, Hubei 430079, P.R. China
| | - Junjing Yang
- Department of Head and Neck and Neurosurgery, Hubei Cancer Hospital, Wuhan, Hubei 430079, P.R. China
| | - Wankai Deng
- Department of Head and Neck and Neurosurgery, Hubei Cancer Hospital, Wuhan, Hubei 430079, P.R. China
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219
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Zhang S, Liu X, Liu J, Guo H, Xu H, Zhang G. PGC-1 alpha interacts with microRNA-217 to functionally regulate breast cancer cell proliferation. Biomed Pharmacother 2017; 85:541-548. [DOI: 10.1016/j.biopha.2016.11.062] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 11/14/2016] [Accepted: 11/14/2016] [Indexed: 12/21/2022] Open
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220
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Mahmoudi E, Cairns MJ. MiR-137: an important player in neural development and neoplastic transformation. Mol Psychiatry 2017; 22:44-55. [PMID: 27620842 PMCID: PMC5414082 DOI: 10.1038/mp.2016.150] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 06/17/2016] [Accepted: 06/23/2016] [Indexed: 12/13/2022]
Abstract
MicroRNAs (miRNAs) represent an important class of small regulatory RNAs that control gene expression posttranscriptionally by targeting mRNAs for degradation or translation inhibition. Early studies have revealed a complex role for miRNAs in major biological processes such as development, differentiation, growth and metabolism. MiR-137 in particular, has been of great interest due to its critical role in brain function and putative involvement in the etiology of both neuropsychiatric disorders and cancer. Several lines of evidence suggest that development, differentiation and maturation of the nervous system is strongly linked to the expression of miR-137 and its regulation of a large number of downstream target genes in various pathways. Dysregulation of this molecule has also been implicated in major mental illnesses through its position in a variant allele highly associated with schizophrenia in the largest mega genome-wide association studies. Interestingly, miR-137 has also been shown to act as a tumor suppressor, with numerous studies finding reduced expression in neoplasia including brain tumor. Restoration of miR-137 expression has also been shown to inhibit cell proliferation, migration and metastasis, and induce cell cycle arrest, differentiation and apoptosis. These properties of miR-137 propose its potential for prognosis, diagnosis and as a therapeutic target for treatment of several human neurological and neoplastic disorders. In this review, we provide details on the discovery, targets, function, regulation and disease involvement of miR-137 with a broad look at recent discovery in this area.
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Affiliation(s)
- E Mahmoudi
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW, Australia,Centre for Translational Neuroscience and Mental Health, Hunter Medical Research Institute, Newcastle, NSW, Australia
| | - M J Cairns
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW, Australia,Centre for Translational Neuroscience and Mental Health, Hunter Medical Research Institute, Newcastle, NSW, Australia,Schizophrenia Research Institute, Sydney, NSW, Australia,School of Biomedical Sciences and Pharmacy, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia. E-mail:
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221
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Cui H, Mu Y, Yu L, Xi YG, Matthiesen R, Su X, Sun W. Methylation of the miR-126 gene associated with glioma progression. Fam Cancer 2016; 15:317-24. [PMID: 26463235 DOI: 10.1007/s10689-015-9846-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Gliomas are the most common and the most malignant brain tumors, accouting for 45-55% of all intracranial tumors. The incidence of glioma worldwide is about 6-12 per 100,000. Recently, several studies showed that the activation of the oncogenes and the inactivation and/or loss of the tumor suppressor genes, especially for miRNA-21, let-7 and so on, are the most primary molecule event in gliomas. MicroRNAs (miRNAs) are a class of endogenously expressed small noncoding RNAs which are usually 21-23 nucleotides long. miRNAs regulate gene expression and play important roles in a variety of physiological and pathological processes, such as cell proliferation, differentiation and apoptosis. To date, Growing evidence has shown that mi RNAs are frequently dysregulated in human cancers and can act as both tumor suppressors and oncogenes. Along with the discovery of micro RNA, more and more research focusing on its relationship with glioma was carried out to investigate the biological features of glioma and to provide experimental evidence for glioma mechanism. In the present study, we aimed to verify the miRNA-126 down-regulation which showed in the results of glioma tissue miRNAs chip and discuss the miRNA-126 methylation in patients with glioma. A total of 50 samples from patients with glioma and 20 control samples from patients with cerebral trauma were included in this study. The expression levels of the miR-126 gene were detected using quantitative polymerase chain reaction (PCR), and the methylation status of miR-126 was examined using methylation-specific PCR-denaturing high-performance liquid chromatography (MSP-DHPLC). The expression level of miRNA-126 was found to be significantly higher in the control group (0.6134 ± 0.1214) than in the glioma group (0.2771 ± 0.1529; P < 0.05). The expression was also significantly elevated in low-grade gliomas (0.3117 ± 0.1474) compared with high-grade gliomas (0.1582 ± 0.1345; P < 0.05). In addition, increased methylation of miR-126 was found in 40% of glioma patients in our study (20/50 cases), resulting in significantly decreased miR-126 expression (0.1715 ± 0.1376; P < 0.05). Our results indicate that we verified successfully the miRNA-126 down-regulation phenomenon in patients with glioma which showed in the results of glioma tissue miRNAs chip and the miRNA-126 down-regulation through methylation in patients with glioma. So we could say that epigenetic modification is a crucial mechanism for controlling the expression of miR-126 in glioma.
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Affiliation(s)
- Hongwei Cui
- Clinical Medical Research Center of the Affiliated Hospital, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Yongping Mu
- Clinical Laboratory of Inner Mongolia Autonomous Region Tumor Hospital, Hohhot, Inner Mongolia, China
| | - Lei Yu
- Pharmacy Department of Inner Mongolia Autonomous Region Hospital of Traditional Chinese Medicine, Hohhot, Inner Mongolia, China
| | - Ya-guang Xi
- Clinical Medical Research Center of the Affiliated Hospital, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Rune Matthiesen
- Department of Genetics, National Institute of Health Dr. Ricardo Jorge, Lisbon, Portugal
| | - Xiulan Su
- Clinical Medical Research Center of the Affiliated Hospital, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Wenjie Sun
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan, 528458, China. .,School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, USA.
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222
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Ghasemi A, Fallah S, Ansari M. MicroRNA-149 is epigenetically silenced tumor-suppressive microRNA, involved in cell proliferation and downregulation of AKT1 and cyclin D1 in human glioblastoma multiforme. Biochem Cell Biol 2016; 94:569-576. [DOI: 10.1139/bcb-2015-0064] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Aberrant DNA methylation has been shown to inactivate tumor suppressor genes during carcinogenesis. MicroRNA-149 (miR-149) was recently demonstrated to function as a tumor suppressor gene in glioblastoma multiforme (GBM). However, the potential linkage of miR-149 levels and the underlying epigenetic regulatory mechanism in human GBM has not been studied. We used quantitative real-time polymerase chain reaction to investigate the levels of miR-149 in GBM tissues, their matched adjacent normal tissues, and glioblastoma U87MG cell line. Using bisulfite genomic sequencing technology, DNA methylation status of upstream region of miR-149 was evaluated in study population groups and the U87MG cell line. After treatment of cells with 5-aza-2′-deoxycitidine (5-aza-dC), the DNA methylation status, gene expression, and target protein levels of miR-149 were investigated. Our studies revealed that methylation and expression levels of miR-149 were significantly increased and decreased, respectively in GBM patients relative to the adjacent normal tissues (P < 0.01). MiR-149 suppressed the expression of AKT1 and cyclin D1 and reduced the proliferative activities of the U87MG cell line. Treatment of U87MG cells with 5-aza-dC reversed the hypermethylation status of miR-149, enhanced the expression of its gene, and decreased target mRNA and proteins levels (P < 0.01). These findings suggest that the methylation mechanism is associated with decreased expression levels of miR-149, which may in turn lead to the increased levels of its oncogenic target proteins.
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Affiliation(s)
- Asghar Ghasemi
- Department of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Soudabeh Fallah
- Department of Clinical Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
- Research Center of Pediatric Infection Disease, Hazrat Rasol Akram Hospital of Iran University of Medical Sciences
| | - Mohammad Ansari
- Department of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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223
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Makhdoumi P, Roohbakhsh A, Karimi G. MicroRNAs regulate mitochondrial apoptotic pathway in myocardial ischemia-reperfusion-injury. Biomed Pharmacother 2016; 84:1635-1644. [DOI: 10.1016/j.biopha.2016.10.073] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 10/16/2016] [Accepted: 10/24/2016] [Indexed: 12/30/2022] Open
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224
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Saadatpour L, Fadaee E, Fadaei S, Nassiri Mansour R, Mohammadi M, Mousavi SM, Goodarzi M, Verdi J, Mirzaei H. Glioblastoma: exosome and microRNA as novel diagnosis biomarkers. Cancer Gene Ther 2016; 23:415-418. [PMID: 27834360 DOI: 10.1038/cgt.2016.48] [Citation(s) in RCA: 172] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 07/25/2016] [Accepted: 07/27/2016] [Indexed: 02/08/2023]
Abstract
Glioblastoma (GBM) is known as a tumor type, which arises from astrocytes. Several studies indicated that GBM tumor cells are malignant. This is because of the fact that they consist of different cell types, which are reproducing very quickly and are also supported by a large network of blood vessels. The correct identification of various stages of GBM could help to better treat the patients with this disease. Therefore, new biomarkers such as exosomes and microRNAs (miRNAs) may help us to learn more about GBM and they may also lead to a more effective treatment for patients with GBM. Exosomes have emerged as biological vehicles, which can perform various tasks in carcinogenesis pathways such as PI3K/AKT, SOX2, PTEN, ERK, and STAT3. The miRNAs are known as small noncoding RNAs that are involved in several GBM pathogenic events. These molecules have key roles in various biological processes such as angiogenesis, metastasis and tumor growth. In this study, we highlighted various exosomes and miRNAs that could be used for diagnosis and/or prognosis biomarkers in patients with GBM.
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Affiliation(s)
- L Saadatpour
- Medical Students Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - E Fadaee
- Faculty of Medicine, Islamic Azad University of Najafabad, Najafabad, Iran
| | - S Fadaei
- Student Research Committee, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - R Nassiri Mansour
- Department of Clinical Biochemistry, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - M Mohammadi
- Hepatitis Research Center and Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - S M Mousavi
- Department of Neuroscience, School of Advanced Technologies in Medicine,Tehran University of Medical Sciences, Tehran, Iran
| | - M Goodarzi
- Department of Biosystems, Faculty of Bioscience Engineering, Katholieke Universiteit Leuven, Leuven, Belgium
| | - J Verdi
- Department of Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Department of Applied Cell Sciences, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - H Mirzaei
- Department of Applied Cell Sciences, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran.,Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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225
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Harada M, Jinnin M, Wang Z, Hirano A, Tomizawa Y, Kira T, Igata T, Masuguchi S, Fukushima S, Ihn H. The expression of miR-124 increases in aged skin to cause cell senescence and it decreases in squamous cell carcinoma. Biosci Trends 2016; 10:454-459. [PMID: 27818465 DOI: 10.5582/bst.2016.01102] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Skin senescence is induced by various factors including intrinsic aging and extrinsic aging. The current study compared the expression of microRNAs in young facial skin and senescent facial skin, and this study identified skin aging-related microRNAs. According to the results from a microRNA PCR Array, miR-124 was the microRNA that increased the most in senescent skin compared to young skin. Real-time PCR with a greater number of samples indicated that the increase in miR-124 levels in senescent facial skin was statistically significant. In situ hybridization was performed, and results indicated that the signal for miR-124 was evident in keratinocytes of senescent skin but not in those of young skin. The morphology of cultured normal human epidermal keratinocytes (NHEKs) transfected with a miR-124 mimic changed to an enlarged and irregular shape. In addition, the number of NHEKs positive for senescence-associated β-galactosidase (SA-β-gal) increased significantly as a result of the overexpression of the miR-124 mimic. The expression of miR-124 increased in UVB-irradiated NHEKs compared to controls in a dose-dependent manner. Expression of miR-124 in A431, a human cutaneous squamous cell carcinoma (SCC) cell line, decreased significantly compared to that in NHEKs. Forced overexpression of miR-124 as a result of the transfection of a miR-124 mimic in A431 resulted in the significant suppression of the proportion of cancer cells. The current results indicated that miR-124 increases as a result of cell senescence and that it decreases during tumorigenesis. The effect of supplementation of miR-124 in an SCC cell line suggests that senescence induction therapy with microRNA may be a new therapeutic approach for treatment of SCC.
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Affiliation(s)
- Miho Harada
- Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University
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226
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Xue H, Guo X, Han X, Yan S, Zhang J, Xu S, Li T, Guo X, Zhang P, Gao X, Liu Q, Li G. MicroRNA-584-3p, a novel tumor suppressor and prognostic marker, reduces the migration and invasion of human glioma cells by targeting hypoxia-induced ROCK1. Oncotarget 2016; 7:4785-805. [PMID: 26715733 PMCID: PMC4826243 DOI: 10.18632/oncotarget.6735] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Accepted: 11/26/2015] [Indexed: 12/29/2022] Open
Abstract
Here, we report that microRNA-584-3p (miR-584-3p) is up-regulated in hypoxic glioma cells and in high-grade human glioma tumors (WHO grades III–IV) relative to normoxic cells and to low-grade tumors (WHO grades I–II), respectively. The postoperative survival time was significantly prolonged in the high-grade glioma patients with high miR-584-3p expression compared with those with low miR-584-3p expression. miR-584-3p may function as a potent tumor suppressor and as a prognostic biomarker for malignant glioma. However, the molecular mechanisms underlying these properties remain poorly understood. Our mechanistic studies revealed that miR-584-3p suppressed the migration and invasion of glioma cells by disrupting hypoxia-induced stress fiber formation. Specifically, we have found that ROCK1 is a direct and functionally relevant target of miR-584-3p in glioma cells. Our results have demonstrated a tumor suppressive function of miR-584-3p in glioma, in which it inhibits the migration and invasion of tumor cells by antagonizing hypoxia-induced, ROCK1-dependent stress fiber formation. Our findings have potential implications for glioma gene therapy and suggest that miR-584-3p could represent a prognostic indicator for glioma.
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Affiliation(s)
- Hao Xue
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, P.R. China.,Brain Science Research Institute, Shandong University, Jinan, Shandong Province, P.R. China
| | - Xing Guo
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, P.R. China.,Brain Science Research Institute, Shandong University, Jinan, Shandong Province, P.R. China
| | - Xiao Han
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, P.R. China
| | - Shaofeng Yan
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, P.R. China
| | - Jinsen Zhang
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, P.R. China
| | - Shugang Xu
- Department of Neurosurgery, Dezhou People's Hospital, Dezhou, Shandong Province, P.R. China
| | - Tong Li
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, P.R. China
| | - Xiaofan Guo
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, P.R. China
| | - Ping Zhang
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, P.R. China.,Brain Science Research Institute, Shandong University, Jinan, Shandong Province, P.R. China
| | - Xiao Gao
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, P.R. China
| | - Qinglin Liu
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, P.R. China
| | - Gang Li
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, P.R. China.,Brain Science Research Institute, Shandong University, Jinan, Shandong Province, P.R. China
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227
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Wang X, Yin H, Rich AM, Sun Y, Tan Z, Luo X, Che N, Wei M, Yin J. MicroRNAs as biomarkers in molecular diagnosis of refractory epilepsy. Chin Neurosurg J 2016. [DOI: 10.1186/s41016-016-0049-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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228
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Li ZM, Zhang HY, Wang YX, Wang WB. MicroRNA-137 is downregulated in human osteosarcoma and regulates cell proliferation and migration through targeting FXYD6. J Drug Target 2016; 24:102-10. [PMID: 26302771 DOI: 10.3109/1061186x.2015.1057149] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND In this work, we investigated the functional role of microRNA 137 (miR-137) in regulating osteosarcoma both in vitro and in vivo. METHODS Quantitative RT-PCR was used to examine the gene expressions of miR-137 in osteosarcoma cell lines and osteosarcoma tumors. 143B and Saos-2 cells were infected with lentivirus expressing miR-137 mimics (miR-137-mimic) to ectopically upregulate miR-137. In vitro cancer proliferation and migration were examined by MTT assay and transwell assay, respectively. Viral infected Saos-2 cells were also subcutaneously inoculated into null mice to evaluate the effect of miR-137 upregulation on in vivo tumor growth. The interaction between miR-137 and its downstream target, FXYD6, was evaluated by dual-luciferase reporter assay and quantitative real-time PCR. FXYD6 was then subsequently upregulated in osteosarcoma cells to evaluate its effect on miR-137 regulation in osteosarcoma. RESULTS We found that miR-137 was significantly downregulated in both osteosarcoma cell lines and osteosarcoma tumors. Lentiviral infection of miR-137-mimic upregulated miR-137 gene expression, reduced in vitro proliferation and migration and inhibited in vivo osteosarcoma tumor growth. FXYD6 was verified to be directly interacting with miR-137, and its subsequent upregulation reversed the inhibitory effect of miR-137 upregulation in osteosarcoma. CONCLUSION We revealed novel functional role of miR-137 in osteosarcoma regulation, likely through FXYD6 binding.
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229
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Wu S, Zhang R, Nie F, Wang X, Jiang C, Liu M, Valenzuela RK, Liu W, Shi Y, Ma J. MicroRNA-137 Inhibits EFNB2 Expression Affected by a Genetic Variant and Is Expressed Aberrantly in Peripheral Blood of Schizophrenia Patients. EBioMedicine 2016; 12:133-142. [PMID: 27650867 PMCID: PMC5078603 DOI: 10.1016/j.ebiom.2016.09.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 09/09/2016] [Accepted: 09/13/2016] [Indexed: 12/21/2022] Open
Abstract
MicroRNAs (miRNAs) are a class of endogenous and non-coding single-stranded RNAs of approximately 22 nucleotides, many of which are evolutionarily conserved. Genome-wide association studies have identified a robust statistical association between the MIR137 gene and schizophrenia in Europeans, which was replicated in the Han Chinese population in a case-control study. In the previous study, we provided evidence for a significant association between the EFNB2 gene and schizophrenia in Han Chinese subjects. In the current study, we utilized computational analysis, vector construction of point mutations, luciferase reporter assays and gene expression assays including RT-qPCR and western blotting methods to investigate miR-137 directly targeting EFNB2 gene and explore the reversal effect of a genetic variant of SNP rs550067317 in the putative seed-pair region of EFNB2 3'-UTR. We also found that miR-137 could be detected in the peripheral blood of a cohort of first-onset schizophrenia patients and healthy controls, and the area under curve was 0.795 (95% confidence interval 0.700-0.890), which is a middle diagnostic value for disease, suggesting that it might be valuable for diagnosing schizophrenia. In summary, this study would improve our understanding of the role of miR-137 in schizophrenia-associated signaling pathways and identify the genetic basis of rs550067317 for schizophrenia. Furthermore, we provided new evidence for the involvement of miR-137 in the etiology and diagnosis of schizophrenia, which might contribute to the discovery of new biomarkers and therapeutic targets for the disease.
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Affiliation(s)
- Shanshan Wu
- Department of Biochemistry and Molecular Biology, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, China
| | - Rui Zhang
- Department of Biochemistry and Molecular Biology, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, China; Translational medicine center, Honghui Hospital, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710054, China.
| | - Fayi Nie
- Department of Biochemistry and Molecular Biology, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, China
| | - Xiaoli Wang
- Department of Biochemistry and Molecular Biology, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, China
| | - Congshan Jiang
- Department of Biochemistry and Molecular Biology, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, China
| | - Meng Liu
- Department of Biochemistry and Molecular Biology, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, China
| | - Robert K Valenzuela
- Department of Human Genetics 4, Genome Institute of Singapore, Agency for Science, Technology and Research (A*STAR), Singapore
| | - Wanqing Liu
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN 47907, USA
| | - Yongyong Shi
- Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Bio-X Institutes, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Jie Ma
- Department of Biochemistry and Molecular Biology, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Ministry of Education, Xi'an, Shaanxi 710061, China.
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230
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A combined microRNA-based targeted therapeutic approach to eradicate glioblastoma stem-like cells. J Control Release 2016; 238:43-57. [PMID: 27448441 DOI: 10.1016/j.jconrel.2016.07.032] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 07/18/2016] [Accepted: 07/19/2016] [Indexed: 12/14/2022]
Abstract
A minor population of glioblastoma stem-like cells (GSCs) has been implicated in the relapse and resistance of glioblastoma to therapeutic treatments. Based on knowledge of the involvement of multiple microRNAs in GSC propagation, we designed a combinational approach to target the GSC population with multiple miRNA-based therapeutics. As carriers for the targeted delivery we took advantage of two aptamers that bind to, and inhibit, the receptor tyrosine kinases, Axl and PDGFRβ. We showed that the aptamer conjugates are transported through an in vitro blood-brain barrier (BBB) model. Furthermore, combining miR-137 and antimiR-10b synergizes with the receptor inhibitory function of aptamer carriers and prevents GSC expansion. Results highlighted the potential of combining multifunctional RNA-based therapeutics for selective targeting of GSCs and offer a proof of principle strategy to potentially fulfill the still unmet need for effective and safe treatment of glioma.
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231
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Yang H, Zhang L, An J, Zhang Q, Liu C, He B, Hao DJ. MicroRNA-Mediated Reprogramming of Somatic Cells into Neural Stem Cells or Neurons. Mol Neurobiol 2016; 54:1587-1600. [DOI: 10.1007/s12035-016-0115-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 09/09/2016] [Indexed: 12/21/2022]
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232
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Lopez-Bertoni H, Lal B, Michelson N, Guerrero-Cázares H, Quiñones-Hinojosa A, Li Y, Laterra J. Epigenetic modulation of a miR-296-5p:HMGA1 axis regulates Sox2 expression and glioblastoma stem cells. Oncogene 2016; 35:4903-13. [PMID: 26898758 PMCID: PMC6151872 DOI: 10.1038/onc.2016.22] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 12/17/2015] [Accepted: 12/18/2015] [Indexed: 12/15/2022]
Abstract
Solid malignancies contain subsets of multipotent cells that grow as spheres and efficiently propagate tumors in xenograft models, reflecting a stem-like, self-renewing and tumor-propagating phenotype. These cancer 'stem cells (SCs)' have been shown to maintain tumor growth, contribute to resistance and drive tumor recurrence. Cancer cell stemness is dynamically influenced by epigenetic mechanisms and differentially regulated coding and noncoding RNAs. How these mechanisms specifically contribute to the generation and/or maintenance of cancer SCs remains unclear. This study identifies a novel epigenetically regulated circuit that integrates microRNA, chromatin remodeling and the reprogramming transcription factor Sox2 to regulate glioblastoma (GBM)-propagating SCs. We show that miR-296-5p expression is repressed in a DNA methylation-dependent manner under conditions that promote GBM cell stemness and that miR-296-5p inhibits GBM cell stemness and their capacity to self-renew as spheres and propagate glioma xenografts in vivo. We show that the chromatin remodeling protein HMGA1 functions as a downstream effector of these biological responses to miR-296-5p and regulates Sox2 expression, a master driver of cell stemness, by modifying chromatin architecture at the Sox2 promoter. These results show for the first time that miR-296-5p inhibits transcriptional mechanisms that support GBM SCs and identify a miR-296-5p:HMGA1:Sox2 axis as a novel regulator of GBM SCs and candidate pathway for targeting therapies directed at depleting tumors of their tumor-propagating stem cell subsets.
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Affiliation(s)
- H Lopez-Bertoni
- Hugo W Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA
- Department of Neurology, The Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - B Lal
- Hugo W Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA
- Department of Neurology, The Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - N Michelson
- Hugo W Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA
| | - H Guerrero-Cázares
- Department of Neurosurgery, The Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - A Quiñones-Hinojosa
- Department of Neurosurgery, The Johns Hopkins School of Medicine, Baltimore, MD, USA
- Department of Neuroscience, The Johns Hopkins School of Medicine, Baltimore, MD, USA
- Department of Oncology, The Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Y Li
- Hugo W Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA
- Department of Neurology, The Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - J Laterra
- Hugo W Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA
- Department of Neurology, The Johns Hopkins School of Medicine, Baltimore, MD, USA
- Department of Neuroscience, The Johns Hopkins School of Medicine, Baltimore, MD, USA
- Department of Oncology, The Johns Hopkins School of Medicine, Baltimore, MD, USA
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233
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Ferreira WAS, Pinheiro DDR, Costa Junior CAD, Rodrigues-Antunes S, Araújo MD, Leão Barros MB, Teixeira ACDS, Faro TAS, Burbano RR, Oliveira EHCD, Harada ML, Borges BDN. An update on the epigenetics of glioblastomas. Epigenomics 2016; 8:1289-305. [PMID: 27585647 DOI: 10.2217/epi-2016-0040] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Glioblastomas, also known as glioblastoma multiforme (GBM), are the most aggressive and malignant type of primary brain tumor in adults, exhibiting notable variability at the histopathological, genetic and epigenetic levels. Recently, epigenetic alterations have emerged as a common hallmark of many tumors, including GBM. Considering that a deeper understanding of the epigenetic modifications that occur in GBM may increase the knowledge regarding the tumorigenesis, progression and recurrence of this disease, in this review we discuss the recent major advances in GBM epigenetics research involving histone modification, glioblastoma stem cells, DNA methylation, noncoding RNAs expression, including their main alterations and the use of epigenetic therapy as a valid option for GBM treatment.
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Affiliation(s)
- Wallax Augusto Silva Ferreira
- Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Pará (Universidade Federal do Pará-UFPA)-Belém, Pará, Brazil
| | - Danilo do Rosário Pinheiro
- Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Pará (Universidade Federal do Pará-UFPA)-Belém, Pará, Brazil
| | - Carlos Antonio da Costa Junior
- Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Pará (Universidade Federal do Pará-UFPA)-Belém, Pará, Brazil
| | - Symara Rodrigues-Antunes
- Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Pará (Universidade Federal do Pará-UFPA)-Belém, Pará, Brazil
| | - Mariana Diniz Araújo
- Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Pará (Universidade Federal do Pará-UFPA)-Belém, Pará, Brazil
| | - Mariceli Baia Leão Barros
- Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Pará (Universidade Federal do Pará-UFPA)-Belém, Pará, Brazil
| | - Adriana Corrêa de Souza Teixeira
- Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Pará (Universidade Federal do Pará-UFPA)-Belém, Pará, Brazil
| | - Thamirys Aline Silva Faro
- Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Pará (Universidade Federal do Pará-UFPA)-Belém, Pará, Brazil
| | | | | | - Maria Lúcia Harada
- Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Pará (Universidade Federal do Pará-UFPA)-Belém, Pará, Brazil
| | - Bárbara do Nascimento Borges
- Molecular Biology Laboratory, Institute of Biological Sciences, Federal University of Pará (Universidade Federal do Pará-UFPA)-Belém, Pará, Brazil
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234
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Sun L, Liang J, Wang Q, Li Z, Du Y, Xu X. MicroRNA-137 suppresses tongue squamous carcinoma cell proliferation, migration and invasion. Cell Prolif 2016; 49:628-35. [PMID: 27571935 DOI: 10.1111/cpr.12287] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 07/14/2016] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES Tongue squamous cell carcinoma (TSCC) is the most frequent type of oral malignancy. Increasing evidence has shown that miRNAs play key roles in many biological processes such as cell development, invasion, proliferation, differentiation, metabolism, apoptosis and migration. MATERIALS AND METHODS qRT-PCR analysis was performed to measure miR-137 expression. CCK-8 analysis, cell colony formation, wound-healing analysis and invasion were performed to detect resultant cell functions. The direct target of miR-137 was labelled and measured by luciferase assay and Western blotting. RESULTS We demonstrated that expression of miR-137 was downregulated in TSCC tissues compared to matched normal ones. miR-137 expression was downregulated in TSCC lines (SCC4, SCC1, UM1 and Cal27) compared to the immortalized NOK16B cell line and normal oral keratinocytes in culture (NHOK). In addition, we have shown that miR-137 expression was epigenetically regulated in TSCCs. Overexpression of miR-137 suppressed TSCC proliferation and colony formation. Ectopic expression of miR-137 promoted expression of the epithelial biomarker, E-cadherin, and inhibited the mesenchymal biomarker, N-cadherin, as well as vimentin and Snail expression, indicating that miR-137 suppressed TSCC epithelial-mesenchymal transition (EMT). We also showed that ectopic expression of miR-137 inhibited TSCC invasion and migration. In addition, we identified SP1 as a direct target gene of miR-137 in SCC1 cells. SP1 overexpression rescued inhibitory effects exerted by miR-137 on cell proliferation and EMT. CONCLUSIONS These results indicate that miR-137 acted as a tumour suppressor in TSCC by targeting SP1.
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Affiliation(s)
- Lanying Sun
- School of Stomatology, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Shandong University, Jinan, 250012, China.,Oral Implantology Center, Stomatology Hospital of Jinan, Jinan, 250001, China
| | - Jin Liang
- School of Stomatology, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Shandong University, Jinan, 250012, China
| | - Qibao Wang
- Department of Endodontics, Stomatology Hospital of Jinan, Jinan, 250001, China
| | - Zhaoyuan Li
- Oral Implantology Center, Stomatology Hospital of Jinan, Jinan, 250001, China
| | - Yi Du
- Department of Endodontics, Stomatology Hospital of Jinan, Jinan, 250001, China
| | - Xin Xu
- School of Stomatology, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Shandong University, Jinan, 250012, China.
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235
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Shahar T, Granit A, Zrihan D, Canello T, Charbit H, Einstein O, Rozovski U, Elgavish S, Ram Z, Siegal T, Lavon I. Expression level of miRNAs on chromosome 14q32.31 region correlates with tumor aggressiveness and survival of glioblastoma patients. J Neurooncol 2016; 130:413-422. [PMID: 27573219 DOI: 10.1007/s11060-016-2248-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Accepted: 08/21/2016] [Indexed: 12/17/2022]
Abstract
The 54 microRNAs (miRNAs) within the DLK-DIO3 genomic region on chromosome 14q32.31 (cluster-14-miRNAs) are organized into sub-clusters 14A and 14B. These miRNAs are downregulated in glioblastomas and might have a tumor suppressive role. Any association between the expression levels of cluster-14-miRNAs with overall survival (OS) is undetermined. We randomly selected miR-433, belonging to sub-cluster 14A and miR-323a-3p and miR-369-3p, belonging to sub-cluster 14B, and assessed their role in glioblastomas in vitro and in vivo. We also determined the expression level of cluster-14-miRNAs in 27 patients with newly diagnosed glioblastoma, and analyzed the association between their level of expression and OS. Overexpression of miR-323a-3p and miR-369-3p, but not miR-433, in glioblastoma cells inhibited their proliferation and migration in vitro. Mice implanted with glioblastoma cells overexpressing miR323a-3p and miR369-3p, but not miR433, exhibited prolonged survival compared to controls (P = .003). Bioinformatics analysis identified 13 putative target genes of cluster-14-miRNAs, and real-time RT-PCR validated these findings. Pathway analysis of the putative target genes identified neuregulin as the most enriched pathway. The expression level of cluster-14-miRNAs correlated with patients' OS. The median OS was 8.5 months for patients with low expression levels and 52.7 months for patients with high expression levels (HR 0.34; 95 % CI 0.12-0.59, P = .003). The expression level of cluster-14-miRNAs correlates directly with OS, suggesting a role for this cluster in promoting aggressive behavior of glioblastoma, possibly through ErBb/neuregulin signaling.
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Affiliation(s)
- Tal Shahar
- Department of Neurosurgery, Tel Aviv Medical Center, Tel Aviv, Israel.,The Laboratory for Molecular Neuro-Oncology, Tel Aviv Medical Center, Tel Aviv, Israel
| | - Avital Granit
- Leslie and Michael Gaffin Center for Neuro-Oncology, Neurology Department, The Agnes Ginges Center for Human Neurogenetics, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Daniel Zrihan
- Leslie and Michael Gaffin Center for Neuro-Oncology, Neurology Department, The Agnes Ginges Center for Human Neurogenetics, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Tamar Canello
- Leslie and Michael Gaffin Center for Neuro-Oncology, Neurology Department, The Agnes Ginges Center for Human Neurogenetics, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Hanna Charbit
- Leslie and Michael Gaffin Center for Neuro-Oncology, Neurology Department, The Agnes Ginges Center for Human Neurogenetics, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Ofira Einstein
- Leslie and Michael Gaffin Center for Neuro-Oncology, Neurology Department, The Agnes Ginges Center for Human Neurogenetics, Hadassah Hebrew University Medical Center, Jerusalem, Israel.,Physiotherapy Department, Ariel University, Ariel, Israel
| | - Uri Rozovski
- Division of Hematology, Davidoff Institute of Oncology, Rabin Medical Center, Campus Beilinson, Petach Tikva, Israel.,Tel Aviv University, Tel Aviv, Israel
| | - Sharona Elgavish
- Info-CORE, Bioinformatics Unit of the I-CORE Computation Center, Hadassah, Hebrew University medical center, Jerusalem, Israel
| | - Zvi Ram
- Department of Neurosurgery, Tel Aviv Medical Center, Tel Aviv, Israel.,The Laboratory for Molecular Neuro-Oncology, Tel Aviv Medical Center, Tel Aviv, Israel.,Tel Aviv University, Tel Aviv, Israel
| | - Tali Siegal
- Center for Neuro-Oncology, Davidoff Institute of Oncology, Rabin Medical Center, Campus Beilinson, Petach Tikva, Israel
| | - Iris Lavon
- Leslie and Michael Gaffin Center for Neuro-Oncology, Neurology Department, The Agnes Ginges Center for Human Neurogenetics, Hadassah Hebrew University Medical Center, Jerusalem, Israel.
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236
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Li Y, Min W, Li M, Han G, Dai D, Zhang L, Chen X, Wang X, Zhang Y, Yue Z, Liu J. Identification of hub genes and regulatory factors of glioblastoma multiforme subgroups by RNA-seq data analysis. Int J Mol Med 2016; 38:1170-8. [PMID: 27572852 PMCID: PMC5029949 DOI: 10.3892/ijmm.2016.2717] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 08/04/2016] [Indexed: 11/24/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most common malignant brain tumor. This study aimed to identify the hub genes and regulatory factors of GBM subgroups by RNA sequencing (RNA-seq) data analysis, in order to explore the possible mechanisms responsbile for the progression of GBM. The dataset RNASeqV2 was downloaded by TCGA-Assembler, containing 169 GBM and 5 normal samples. Gene expression was calculated by the reads per kilobase per million reads measurement, and nor malized with tag count comparison. Following subgroup classification by the non-negative matrix factorization, the differentially expressed genes (DEGs) were screened in 4 GBM subgroups using the method of significance analysis of microarrays. Functional enrichment analysis was performed by DAVID, and the protein-protein interaction (PPI) network was constructed based on the HPRD database. The subgroup-related microRNAs (miRNAs or miRs), transcription factors (TFs) and small molecule drugs were predicted with predefined criteria. A cohort of 19,515 DEGs between the GBM and control samples was screened, which were predominantly enriched in cell cycle- and immunoreaction-related pathways. In the PPI network, lymphocyte cytosolic protein 2 (LCP2), breast cancer 1 (BRCA1), specificity protein 1 (Sp1) and chromodomain-helicase-DNA-binding protein 3 (CHD3) were the hub nodes in subgroups 1–4, respectively. Paired box 5 (PAX5), adipocyte protein 2 (aP2), E2F transcription factor 1 (E2F1) and cAMP-response element-binding protein-1 (CREB1) were the specific TFs in subgroups 1–4, respectively. miR-147b, miR-770-5p, miR-220a and miR-1247 were the particular miRNAs in subgroups 1–4, respectively. Natalizumab was the predicted small molecule drug in subgroup 2. In conclusion, the molecular regulatory mechanisms of GBM pathogenesis were distinct in the different subgroups. Several crucial genes, TFs, miRNAs and small molecules in the different GBM subgroups were identified, which may be used as potential markers. However, further experimental validations may be required.
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Affiliation(s)
- Yanan Li
- Department of Neurosurgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, P.R. China
| | - Weijie Min
- Department of Neurosurgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, P.R. China
| | - Mengmeng Li
- Department of Rheumatology and Immunology, Shanghai Changzheng Hospital, The Second Military Medical University, Shanghai 200003, P.R. China
| | - Guosheng Han
- Department of Neurosurgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, P.R. China
| | - Dongwei Dai
- Department of Neurosurgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, P.R. China
| | - Lei Zhang
- Department of Neurosurgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, P.R. China
| | - Xin Chen
- Department of Neurosurgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, P.R. China
| | - Xinglai Wang
- Department of Neurosurgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, P.R. China
| | - Yuhui Zhang
- Department of Neurosurgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, P.R. China
| | - Zhijian Yue
- Department of Neurosurgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, P.R. China
| | - Jianmin Liu
- Department of Neurosurgery, Changhai Hospital, The Second Military Medical University, Shanghai 200433, P.R. China
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237
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Xiong XR, Lan DL, Li J, Zi XD, Li MY. Identification of candidate miRNAs and expression profile of yak oocytes before and after in vitro maturation by high-throughput sequencing. Reprod Domest Anim 2016; 51:886-894. [PMID: 27562759 DOI: 10.1111/rda.12754] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 07/11/2016] [Indexed: 11/28/2022]
Abstract
Small RNA represents several unique non-coding RNA classes that have important function in a wide range of biological processes including development of germ cells and early embryonic, cell differentiation, cell proliferation and apoptosis in diverse organisms. However, little is known about their expression profiles and effects in yak oocytes maturation and early development. To investigate the function of small RNAs in the maturation process of yak oocyte and early development, two small RNA libraries of oocytes were constructed from germinal vesicle stage (GV) and maturation in vitro to metaphase II-arrested stage (M II) and then sequenced using small RNA high-throughput sequencing technology. A total of 9,742,592 and 12,168,523 clean reads were obtained from GV and M II oocytes, respectively. In total, 801 and 1,018 known miRNAs were acquired from GV and M II oocytes, and 75 miRNAs were found to be significantly differentially expressed: 47 miRNAs were upregulated and 28 miRNAs were downregulated in the M II oocytes compared to the GV stage. Among the upregulated miRNAs, miR-342 has the largest fold change (9.25-fold). Six highly expressed miRNAs (let-7i, miR-10b, miR-10c, miR-143, miR-146b and miR-148) were validated by real-time quantitative PCR (RT-qPCR) and consistent with the sequencing results. Furthermore, the expression patterns of two miRNAs and their potential targets were analysed in different developmental stages of oocytes and early embryos. This study provides the first miRNA profile in the mature process of yak oocyte. Seventy-five miRNAs are expressed differentially in GV and M II oocytes as well as among different development stages of early embryos, suggesting miRNAs involved in regulating oocyte maturation and early development of yak. These results showed specific miRNAs in yak oocytes had dynamic changes during meiosis. Further functional and mechanistic studies on the miRNAs during meiosis may beneficial to understanding the role of miRNAs on meiotic division.
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Affiliation(s)
- X R Xiong
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China.,College of Life Science and Technology, Southwest University for Nationalities, Chengdu, Sichuan, China
| | - D L Lan
- College of Life Science and Technology, Southwest University for Nationalities, Chengdu, Sichuan, China
| | - J Li
- College of Life Science and Technology, Southwest University for Nationalities, Chengdu, Sichuan, China
| | - X D Zi
- College of Life Science and Technology, Southwest University for Nationalities, Chengdu, Sichuan, China
| | - M Y Li
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
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238
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Liu YX, Wang L, Liu WJ, Zhang HT, Xue JH, Zhang ZW, Gao CJ. MiR-124-3p/B4GALT1 axis plays an important role in SOCS3-regulated growth and chemo-sensitivity of CML. J Hematol Oncol 2016; 9:69. [PMID: 27516205 PMCID: PMC4982324 DOI: 10.1186/s13045-016-0300-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 08/05/2016] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Abnormal expression of SOCS3 has been implicated in myeloproliferative neoplasms, but the role of SOCS3 in the pathogenesis of leukemia remains largely unknown. Here, we examined the function of SOCS3 in the growth and chemo-sensitivity of chronic myeloid leukemia (CML) and explored the involved mechanisms. METHODS Expression levels of SOCS3 in several leukemia cell lines and bone marrow mononuclear cells (BMNCs) from CML patients were determined using quantitative real-time PCR (qPCR) and Western blotting (WB). The roles of SOCS3 in the proliferation, apoptosis, and drug resistance of CML cells were examined by clonogenic progenitor cell assay, flow cytometry, and CCK-8 assay. A detailed analysis of the underlying mechanism of SOCS3 in K562 cells was performed using the Human HT-12 v4 Expression BeadChip, which has more than 48000 gene probes including 600 microRNAs (miRNA) probes. The correlation between the mRNA expression of SOCS3 and miR-124-3p in BMNCs from 30 CML patients was tested by qPCR and analyzed by Pearson correlation and linear regression analysis. The potential target of miR-124-3p in CML cells was explored using the luciferase reporter assay, qPCR, and WB. The effect of SOCS3 on the miR-124-3p/B4GALT1 axis was investigated by qPCR, WB, CCK-8 assay, and tumorigenicity assays in nude mice. RESULTS SOCS3 was down-regulated in CML cell lines and most of BMNCs from CML patients, and the expression level of SOCS3 was associated with the inhibition of cell proliferation and drug resistance of CML cells. Over-expression of SOCS3 in K562 cells inhibited the expression of leukemia-specific genes and promoted the expression of some miRNAs, among which miR-124-3p was the highest. SOCS3 over-expression enhanced the expression of miR-124-3p and vice versa. The mRNA expression of miR-124-3p and SOCS3 in BMNCs from 30 CML patients was positively correlated. Consistently, the tumor suppressing effects of SOCS3 were partially neutralized by the miR-124-3p inhibitor. B4GALT1 was downstream of miR-124-3p and regulated by SOCS3/miR-124-3p in vitro. Furthermore, SOCS3 over-expression could inhibit the growth and B4GALT expression of K562 cells in vivo. CONCLUSIONS SOCS3/miR-124-3p/B4GALT1 axis plays an important role in the pathogenesis of CML.
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Affiliation(s)
- Yu-Xiao Liu
- Department of Neurosurgery, The First Affiliated Hospital of Chinese PLA General Hospital, 51 Fushi Road, Beijing, 100048, People's Republic of China
| | - Li Wang
- Department of Hematology, Chinese PLA General Hospital, Laoshan Branch, No. 401, Qingdao, 266100, People's Republic of China.,Department of Hematology, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, People's Republic of China
| | - Wen-Jia Liu
- Genetic Laboratory of Development and Diseases, Beijing Institute of Biotechnology, Beijing, 100071, People's Republic of China
| | - Hai-Tao Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Chinese PLA General Hospital, 51 Fushi Road, Beijing, 100048, People's Republic of China
| | - Jing-Hui Xue
- Department of Neurosurgery, The First Affiliated Hospital of Chinese PLA General Hospital, 51 Fushi Road, Beijing, 100048, People's Republic of China.
| | - Zhi-Wen Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Chinese PLA General Hospital, 51 Fushi Road, Beijing, 100048, People's Republic of China
| | - Chun-Ji Gao
- Department of Hematology, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, People's Republic of China.
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239
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Wang X, Li Y, Qi W, Zhang N, Sun M, Huo Q, Cai C, Lv S, Yang Q. MicroRNA-99a inhibits tumor aggressive phenotypes through regulating HOXA1 in breast cancer cells. Oncotarget 2016; 6:32737-47. [PMID: 26417931 PMCID: PMC4741726 DOI: 10.18632/oncotarget.5355] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 09/07/2015] [Indexed: 01/07/2023] Open
Abstract
MicroRNAs (miRNAs) are key regulators of tumor progression. Based on microarray data, we identified miR-99a as a potential tumor suppressor in breast cancer. Expression of miR-99a is frequently down-regulated in breast cancer tissues relative to normal breast tissues. Reduced miR-99a expression was highly associated with lymph node metastasis and shorter overall survival of patients with breast cancer. Gain- and loss-of-function studies revealed that, miR-99a significantly inhibits breast cancer cell proliferation, migration, and invasion. An integrated bioinformatics analysis identified HOXA1 mRNA as the direct functional target of miR-99a, and this regulation was confirmed by luciferase reporter assay. Furthermore, we showed for the first time that HOXA1 expression is elevated in breast cancer tissues. Knockdown of HOXA1 significantly inhibited breast cancer cell proliferation, migration and invasion, and restoration of HOXA1 partially rescued the inhibitory effect of miR-99a in breast cancer cells. Collectively, our data indicate that miR-99a plays a tumor-suppressor role in the development of breast cancer, and could serve as a potential therapeutic target for breast cancer treatment.
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Affiliation(s)
- Xiaolong Wang
- Department of Breast Surgery, Qilu Hospital, Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Yaming Li
- School of Medicine, Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Wenwen Qi
- School of Medicine, Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Ning Zhang
- Department of Breast Surgery, Qilu Hospital, Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Mingjuan Sun
- Department of Breast Surgery, Qilu Hospital, Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Qiang Huo
- Department of Breast Surgery, Qilu Hospital, Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Chang Cai
- Department of Breast Surgery, Qilu Hospital, Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Shangge Lv
- School of Medicine, Shandong University, Jinan, Shandong, 250012, P.R. China
| | - Qifeng Yang
- Department of Breast Surgery, Qilu Hospital, Shandong University, Jinan, Shandong, 250012, P.R. China.,Department of Pathology Tissue Bank, Qilu Hospital, Shandong University, Jinan, Shandong, 250012, P.R. China
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240
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Lee JM, Cho KW, Kim EJ, Tang Q, Kim KS, Tickle C, Jung HS. A contrasting function for miR-137 in embryonic mammogenesis and adult breast carcinogenesis. Oncotarget 2016. [PMID: 26215676 PMCID: PMC4673145 DOI: 10.18632/oncotarget.4218] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
MicroRNAs are differentially expressed in breast cancer cells and have been implicated in cancer formation, tumour invasion and metastasis. We investigated the miRNA expression profiles in the developing mammary gland. MiR-137 was expressed prominently in the developing mammary gland. When the miR-137 was over-expressed in the embryo, the mammary epithelium became thickened. Moreover, genes associated with mammary gland formation such as Tbx3 and Lef1 were not expressed. This suggests that miR-137 induces gland formation and invasion. When miR-137 was over-expressed in MDA-MB-231 cells, their ability to form tumours in adult mice was significantly reduced. These data support miR-137 decides epithelial cell behavior in the human breast cancer. It also suggests that miR-137 is a potential therapeutic target for amelioration of breast cancer progression.
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Affiliation(s)
- Jong-Min Lee
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Korea
| | - Kyoung-Won Cho
- Department of Radiology, Seoul National University Hospital, Seoul, Korea
| | - Eun-Jung Kim
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Korea
| | - Qinghuang Tang
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Korea
| | - Kye-Seong Kim
- Graduate School of Biomedical Science and Engineering, College of Medicine, Hanyang University, Seoul, Korea
| | - Cheryll Tickle
- Department of Biology and Biochemistry, University of Bath, Bath, UK
| | - Han-Sung Jung
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Korea.,Oral Biosciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR
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241
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Ma C, Zheng C, Bai E, Yang K. miR-101 inhibits glioma cell invasion via the downregulation of COX-2. Oncol Lett 2016; 12:2538-2544. [PMID: 27698824 PMCID: PMC5038506 DOI: 10.3892/ol.2016.4939] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 04/22/2016] [Indexed: 12/15/2022] Open
Abstract
Glioma is the most common type of primary tumor of the central nervous system. The present study aimed to demonstrate the role of miR-101 and cyclooxygenase-2 (COX-2) in the initiation and development of glioma. The expression of miR-101 and COX-2 in normal and malignant human glial cells and tissues was determined by western blotting and quantitative polymerase chain reaction analysis. The role of miR-101 on COX-2 expression was evaluated by a dual-luciferase reporter assay. The effects of miR-101 and COX-2 in glioma cell proliferation and invasion was verified by CCK-8 test and Transwell assays, respectively. The present study demonstrated that miR-101 expression was downregulated while COX-2 was upregulated in glioma tissues and cells. Furthermore, transfection of miR-101 significantly downregulated COX-2 expression in both U373 and U87 glioma cells. In addition, further experiments revealed that overexpression of miR-101 resulted in significant inhibition of the in vitro proliferation and migration of glioma cells, and the in vivo growth of established tumors. Direct downregulation of COX-2 by transfection with corresponding small interfering RNA also inhibited the proliferation and invasion of glioma cells. These results indicate that downregulation of miR-101 is involved in the initiation and development of glioma via COX-2 upregulation.
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Affiliation(s)
- Chunyang Ma
- Department of Neurosurgery, The Affiliated Hospital of Hainan Medical College, Haikou, Hainan 570102, P.R. China
| | - Chuanyi Zheng
- Department of Neurosurgery, The Affiliated Hospital of Hainan Medical College, Haikou, Hainan 570102, P.R. China
| | - Enqi Bai
- Department of Neurosurgery, The Affiliated Hospital of Hainan Medical College, Haikou, Hainan 570102, P.R. China
| | - Kun Yang
- Department of Neurosurgery, The Affiliated Hospital of Hainan Medical College, Haikou, Hainan 570102, P.R. China
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242
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Shea A, Harish V, Afzal Z, Chijioke J, Kedir H, Dusmatova S, Roy A, Ramalinga M, Harris B, Blancato J, Verma M, Kumar D. MicroRNAs in glioblastoma multiforme pathogenesis and therapeutics. Cancer Med 2016; 5:1917-46. [PMID: 27282910 PMCID: PMC4971921 DOI: 10.1002/cam4.775] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 04/05/2016] [Accepted: 04/14/2016] [Indexed: 12/13/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most common and lethal cancer of the adult brain, remaining incurable with a median survival time of only 15 months. In an effort to identify new targets for GBM diagnostics and therapeutics, recent studies have focused on molecular phenotyping of GBM subtypes. This has resulted in mounting interest in microRNAs (miRNAs) due to their regulatory capacities in both normal development and in pathological conditions such as cancer. miRNAs have a wide range of targets, allowing them to modulate many pathways critical to cancer progression, including proliferation, cell death, metastasis, angiogenesis, and drug resistance. This review explores our current understanding of miRNAs that are differentially modulated and pathologically involved in GBM as well as the current state of miRNA-based therapeutics. As the role of miRNAs in GBM becomes more well understood and novel delivery methods are developed and optimized, miRNA-based therapies could provide a critical step forward in cancer treatment.
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Affiliation(s)
- Amanda Shea
- Division of Science and MathematicsCancer Research LaboratoryUniversity of the District of ColumbiaWashingtonDistrict of Columbia20008
| | | | - Zainab Afzal
- Division of Science and MathematicsCancer Research LaboratoryUniversity of the District of ColumbiaWashingtonDistrict of Columbia20008
| | - Juliet Chijioke
- Division of Science and MathematicsCancer Research LaboratoryUniversity of the District of ColumbiaWashingtonDistrict of Columbia20008
| | - Habib Kedir
- Division of Science and MathematicsCancer Research LaboratoryUniversity of the District of ColumbiaWashingtonDistrict of Columbia20008
| | - Shahnoza Dusmatova
- Division of Science and MathematicsCancer Research LaboratoryUniversity of the District of ColumbiaWashingtonDistrict of Columbia20008
| | - Arpita Roy
- Division of Science and MathematicsCancer Research LaboratoryUniversity of the District of ColumbiaWashingtonDistrict of Columbia20008
| | - Malathi Ramalinga
- Division of Science and MathematicsCancer Research LaboratoryUniversity of the District of ColumbiaWashingtonDistrict of Columbia20008
| | - Brent Harris
- Department of Neurology and PathologyGeorgetown UniversityWashingtonDistrict of Columbia20057
| | - Jan Blancato
- Lombardi Comprehensive Cancer CenterGeorgetown UniversityWashingtonDistrict of Columbia20057
| | - Mukesh Verma
- Division of Cancer Control and Population SciencesNational Cancer Institute (NCI)National Institutes of Health (NIH)RockvilleMaryland20850
| | - Deepak Kumar
- Division of Science and MathematicsCancer Research LaboratoryUniversity of the District of ColumbiaWashingtonDistrict of Columbia20008
- Lombardi Comprehensive Cancer CenterGeorgetown UniversityWashingtonDistrict of Columbia20057
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243
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Fukao A, Aoyama T, Fujiwara T. The molecular mechanism of translational control via the communication between the microRNA pathway and RNA-binding proteins. RNA Biol 2016; 12:922-6. [PMID: 26274611 DOI: 10.1080/15476286.2015.1073436] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
MicroRNAs (miRNAs) are evolutionarily conserved small noncoding RNAs found in most plants and animals. The miRNA pathway regulates posttranscriptional gene expression through the deadenylation and translation repression of target mRNAs. Recent studies revealed that the early step of translation initiation is the target of "pure" translation repression by the miRNA pathway. Moreover, particularly in animals, the miRNA pathway is required for neuronal development, differentiation, and plasticity. In addition, some functions of miRNAs are regulated by RNA-binding proteins (RBPs) in neuronal cells. This review summarizes new insights about the molecular mechanisms of pure translation repression by miRNA pathway and the communication between the miRNA pathway and RBPs in neuronal local translation.
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Affiliation(s)
- Akira Fukao
- a Laboratory of Biochemistry; Department of Pharmacy; Kinki University ; Higashi-Osaka , Japan
| | - Tomohiko Aoyama
- b Graduate School of Pharmaceutical Sciences; Nagoya City University ; Mizuho-ku, Nagoya , Japan
| | - Toshinobu Fujiwara
- a Laboratory of Biochemistry; Department of Pharmacy; Kinki University ; Higashi-Osaka , Japan
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244
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Chakrabarti M, Klionsky DJ, Ray SK. miR-30e Blocks Autophagy and Acts Synergistically with Proanthocyanidin for Inhibition of AVEN and BIRC6 to Increase Apoptosis in Glioblastoma Stem Cells and Glioblastoma SNB19 Cells. PLoS One 2016; 11:e0158537. [PMID: 27388765 PMCID: PMC4936720 DOI: 10.1371/journal.pone.0158537] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 06/17/2016] [Indexed: 11/18/2022] Open
Abstract
Glioblastoma is the most common and malignant brain tumor in humans. It is a heterogeneous tumor harboring glioblastoma stem cells (GSC) and other glioblastoma cells that survive and sustain tumor growth in a hypoxic environment via induction of autophagy and resistance to apoptosis. So, a therapeutic strategy to inhibit autophagy and promote apoptosis could greatly help control growth of glioblastoma. We created hypoxia using sodium sulfite (SS) for induction of substantiated autophagy in human GSC and glioblastoma SNB19 cells. Induction of autophagy was confirmed by acridine orange (AO) staining and significant increase in Beclin-1 in autophagic cells. microRNA database (miRDB) search suggested that miR-30e could suppress the autophagy marker Beclin-1 and also inhibit the caspase activation inhibitors (AVEN and BIRC6). Pro-apoptotic effect of proanthocyanidin (PAC) has not yet been explored in glioblastoma cells. Combination of 50 nM miR-30e and 150 μM PAC acted synergistically for inhibition of viability in both cells. This combination therapy most effectively altered expression of molecules for inhibition of autophagy and induced extrinsic and intrinsic pathways of apoptosis through suppression of AVEN and BIRC6. Collectively, combination of miR-30e and PAC is a promising therapeutic strategy to inhibit autophagy and increase apoptosis in GSC and SNB19 cells.
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Affiliation(s)
- Mrinmay Chakrabarti
- Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, South Carolina, United States of America
| | - Daniel J. Klionsky
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Swapan K. Ray
- Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, South Carolina, United States of America
- * E-mail:
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245
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Serban F, Daianu O, Tataranu LG, Artene SA, Emami G, Georgescu AM, Alexandru O, Purcaru SO, Tache DE, Danciulescu MM, Sfredel V, Dricu A. Silencing of epidermal growth factor, latrophilin and seven transmembrane domain-containing protein 1 (ELTD1) via siRNA-induced cell death in glioblastoma. J Immunoassay Immunochem 2016; 38:21-33. [PMID: 27379831 DOI: 10.1080/15321819.2016.1209217] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The failure of therapies targeting tumor angiogenesis may be caused by anti-angiogenic resistance mechanisms induced by VEGF and non-VEGF pathways alterations. Anti-angiogenic therapy failure is also attributed to immune system, acting by tumor-associated macrophages that release pro-angiogenic factors and a consequent increase of blood vessels. Recently, in a study by Rheal et al., a new angiogenic receptor, epidermal growth factor, latrophilin, and 7 trans-membrane domain-containing protein 1 on chromosome 1(ELTD1) has been identified as a promising glioma biomarker. In this study we aim to analyse whether this receptor may be used as a target molecule in glioblastoma therapy. Our results showed that small interfering RNA silencing ELTD1 caused cytotoxicity in glioblastoma cells. We also found that PDGFR, VEGFR, and their common PI3K/mTOR intracellular pathway inactivation-induced cytotoxicity in glioblastoma cells. Further, we found high percent of cytotoxicity in a low passage glioblastoma cell line after BEZ235 (a dual inhibitor of PI3K/mTOR pathway) treatment at nanomolar concentrations, compared to AG1433 (a PDGFR inhibitor) and SU1498 (a VEGFR inhibitor) that were only cytotoxic at micromolar ranges. In the future, these could prove as attractive therapeutic targets in single therapy or coupled with classic therapeutic approaches such as chemotherapy of radiotherapy.
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Affiliation(s)
- Florentina Serban
- a Department of Functional Sciences , University of Medicine and Pharmacy of Craiova , Craiova , Romania
| | - Oana Daianu
- a Department of Functional Sciences , University of Medicine and Pharmacy of Craiova , Craiova , Romania
| | | | - Stefan-Alexandru Artene
- a Department of Functional Sciences , University of Medicine and Pharmacy of Craiova , Craiova , Romania
| | - Ghazaleh Emami
- a Department of Functional Sciences , University of Medicine and Pharmacy of Craiova , Craiova , Romania
| | - Ada Maria Georgescu
- a Department of Functional Sciences , University of Medicine and Pharmacy of Craiova , Craiova , Romania
| | - Oana Alexandru
- a Department of Functional Sciences , University of Medicine and Pharmacy of Craiova , Craiova , Romania
| | - Stefana Oana Purcaru
- a Department of Functional Sciences , University of Medicine and Pharmacy of Craiova , Craiova , Romania
| | - Daniela Elise Tache
- a Department of Functional Sciences , University of Medicine and Pharmacy of Craiova , Craiova , Romania
| | | | - Veronica Sfredel
- a Department of Functional Sciences , University of Medicine and Pharmacy of Craiova , Craiova , Romania
| | - Anica Dricu
- a Department of Functional Sciences , University of Medicine and Pharmacy of Craiova , Craiova , Romania
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246
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Deng D, Wang L, Chen Y, Li B, Xue L, Shao N, Wang Q, Xia X, Yang Y, Zhi F. MicroRNA-124-3p regulates cell proliferation, invasion, apoptosis, and bioenergetics by targeting PIM1 in astrocytoma. Cancer Sci 2016; 107:899-907. [PMID: 27088547 PMCID: PMC4946703 DOI: 10.1111/cas.12946] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 03/22/2016] [Accepted: 04/09/2016] [Indexed: 12/12/2022] Open
Abstract
The PIM1 protein is an important regulator of cell proliferation, the cell cycle, apoptosis, and metabolism in various human cancers. MicroRNAs (miRNAs) are powerful post‐transcriptional gene regulators that function through translational repression or transcript destabilization. Therefore, we aimed to identify whether a close relationship exists between PIM1 and miRNAs. PIM1 protein levels and mRNA levels were significantly upregulated in astrocytoma tissues, indicating the oncogenic role of PIM1 in astrocytoma. Further bioinformatics analysis indicated that miR‐124‐3p targeted the 3′‐UTR of PIM1. We also observed an inverse correlation between the miR‐124‐3p levels and PIM1 protein or mRNA levels in astrocytoma samples. Next, we experimentally confirmed that miR‐124‐3p directly recognizes the 3′‐UTR of the PIM1 transcript and regulates PIM1 expression at both the protein and mRNA levels. Furthermore, we examined the biological consequences of miR‐124‐3p targeting PIM1 in vitro. We showed that the repression of PIM1 in astrocytoma cancer cells by miR‐124‐3p suppressed proliferation, invasion, and aerobic glycolysis and promoted apoptosis. We observed that the restoration or inhibition of PIM1 activity resulted in effects that were similar to those induced by miR‐124‐3p inhibitors or mimics in cancer cells. Finally, overexpression of PIM1 rescued the inhibitory effects of miR‐124‐3p. In summary, these findings aid in understanding the tumor‐suppressive role of miR‐124‐3p in astrocytoma pathogenesis through the inhibition of PIM1 translation.
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Affiliation(s)
- Danni Deng
- Modern Medical Research Center, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Lei Wang
- Xuzhou Central Hospital, Affiliated Hospital of Southeast University, Xuzhou, China
| | - Yao Chen
- Biopharm Industry Service Center, Changzhou Center for Biotech Development, Changzhou, China
| | - Bowen Li
- Modern Medical Research Center, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Lian Xue
- Modern Medical Research Center, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Naiyuan Shao
- Department of Neurosurgery, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Qiang Wang
- Department of Neurosurgery, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xiwei Xia
- Department of Neurosurgery, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Yilin Yang
- Modern Medical Research Center, Third Affiliated Hospital of Soochow University, Changzhou, China.,Department of Neurosurgery, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Feng Zhi
- Modern Medical Research Center, Third Affiliated Hospital of Soochow University, Changzhou, China
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247
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Zhang N, Huang Y, Wu F, Zhao Y, Li X, Shen P, Yang L, Luo Y, Yang L, He G. Codelivery of a miR-124 Mimic and Obatoclax by Cholesterol-Penetratin Micelles Simultaneously Induces Apoptosis and Inhibits Autophagic Flux in Breast Cancer in Vitro and in Vivo. Mol Pharm 2016; 13:2466-83. [PMID: 27266580 DOI: 10.1021/acs.molpharmaceut.6b00211] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Nan Zhang
- State Key Laboratory of Biotherapy/Collaborative
Innovation Center for Biotherapy, Department of Pharmacy and Department
of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, P.R. China
| | - Yan Huang
- State Key Laboratory of Biotherapy/Collaborative
Innovation Center for Biotherapy, Department of Pharmacy and Department
of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, P.R. China
| | - Fengbo Wu
- State Key Laboratory of Biotherapy/Collaborative
Innovation Center for Biotherapy, Department of Pharmacy and Department
of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, P.R. China
| | - Yinbo Zhao
- State Key Laboratory of Biotherapy/Collaborative
Innovation Center for Biotherapy, Department of Pharmacy and Department
of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, P.R. China
| | - Xiang Li
- State Key Laboratory of Biotherapy/Collaborative
Innovation Center for Biotherapy, Department of Pharmacy and Department
of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, P.R. China
| | - Pengfei Shen
- State Key Laboratory of Biotherapy/Collaborative
Innovation Center for Biotherapy, Department of Pharmacy and Department
of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, P.R. China
| | - Lu Yang
- State Key Laboratory of Biotherapy/Collaborative
Innovation Center for Biotherapy, Department of Pharmacy and Department
of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, P.R. China
| | - Yan Luo
- State Key Laboratory of Biotherapy/Collaborative
Innovation Center for Biotherapy, Department of Pharmacy and Department
of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, P.R. China
| | - Li Yang
- State Key Laboratory of Biotherapy/Collaborative
Innovation Center for Biotherapy, Department of Pharmacy and Department
of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, P.R. China
| | - Gu He
- State Key Laboratory of Biotherapy/Collaborative
Innovation Center for Biotherapy, Department of Pharmacy and Department
of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, P.R. China
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248
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Correa BR, de Araujo PR, Qiao M, Burns SC, Chen C, Schlegel R, Agarwal S, Galante PAF, Penalva LOF. Functional genomics analyses of RNA-binding proteins reveal the splicing regulator SNRPB as an oncogenic candidate in glioblastoma. Genome Biol 2016; 17:125. [PMID: 27287018 PMCID: PMC4901439 DOI: 10.1186/s13059-016-0990-4] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 05/24/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Glioblastoma (GBM) is the most common and aggressive type of brain tumor. Currently, GBM has an extremely poor outcome and there is no effective treatment. In this context, genomic and transcriptomic analyses have become important tools to identify new avenues for therapies. RNA-binding proteins (RBPs) are master regulators of co- and post-transcriptional events; however, their role in GBM remains poorly understood. To further our knowledge of novel regulatory pathways that could contribute to gliomagenesis, we have conducted a systematic study of RBPs in GBM. RESULTS By measuring expression levels of 1542 human RBPs in GBM samples and glioma stem cell samples, we identified 58 consistently upregulated RBPs. Survival analysis revealed that increased expression of 21 RBPs was also associated with a poor prognosis. To assess the functional impact of those RBPs, we modulated their expression in GBM cell lines and performed viability, proliferation, and apoptosis assays. Combined results revealed a prominent oncogenic candidate, SNRPB, which encodes core spliceosome machinery components. To reveal the impact of SNRPB on splicing and gene expression, we performed its knockdown in a GBM cell line followed by RNA sequencing. We found that the affected genes were involved in RNA processing, DNA repair, and chromatin remodeling. Additionally, genes and pathways already associated with gliomagenesis, as well as a set of general cancer genes, also presented with splicing and expression alterations. CONCLUSIONS Our study provides new insights into how RBPs, and specifically SNRPB, regulate gene expression and directly impact GBM development.
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Affiliation(s)
- Bruna R Correa
- Centro de Oncologia Molecular, Hospital Sírio-Libanês, São Paulo, Brazil
- Children's Cancer Research Institute, UTHSCSA, San Antonio, TX, USA
| | | | - Mei Qiao
- Children's Cancer Research Institute, UTHSCSA, San Antonio, TX, USA
| | - Suzanne C Burns
- Children's Cancer Research Institute, UTHSCSA, San Antonio, TX, USA
| | - Chen Chen
- Georgetown University Medical Center, Washington, DC, USA
| | | | - Seema Agarwal
- Georgetown University Medical Center, Washington, DC, USA
| | - Pedro A F Galante
- Centro de Oncologia Molecular, Hospital Sírio-Libanês, São Paulo, Brazil.
| | - Luiz O F Penalva
- Children's Cancer Research Institute, UTHSCSA, San Antonio, TX, USA.
- Department of Cellular and Structural Biology, UTHSCSA, San Antonio, TX, USA.
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249
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Lim DA, Alvarez-Buylla A. The Adult Ventricular-Subventricular Zone (V-SVZ) and Olfactory Bulb (OB) Neurogenesis. Cold Spring Harb Perspect Biol 2016; 8:cshperspect.a018820. [PMID: 27048191 DOI: 10.1101/cshperspect.a018820] [Citation(s) in RCA: 423] [Impact Index Per Article: 52.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A large population of neural stem/precursor cells (NSCs) persists in the ventricular-subventricular zone (V-SVZ) located in the walls of the lateral brain ventricles. V-SVZ NSCs produce large numbers of neuroblasts that migrate a long distance into the olfactory bulb (OB) where they differentiate into local circuit interneurons. Here, we review a broad range of discoveries that have emerged from studies of postnatal V-SVZ neurogenesis: the identification of NSCs as a subpopulation of astroglial cells, the neurogenic lineage, new mechanisms of neuronal migration, and molecular regulators of precursor cell proliferation and migration. It has also become evident that V-SVZ NSCs are regionally heterogeneous, with NSCs located in different regions of the ventricle wall generating distinct OB interneuron subtypes. Insights into the developmental origins and molecular mechanisms that underlie the regional specification of V-SVZ NSCs have also begun to emerge. Other recent studies have revealed new cell-intrinsic molecular mechanisms that enable lifelong neurogenesis in the V-SVZ. Finally, we discuss intriguing differences between the rodent V-SVZ and the corresponding human brain region. The rapidly expanding cellular and molecular knowledge of V-SVZ NSC biology provides key insights into postnatal neural development, the origin of brain tumors, and may inform the development regenerative therapies from cultured and endogenous human neural precursors.
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Affiliation(s)
- Daniel A Lim
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research at UCSF, Department of Neurological Surgery, University of California, San Francisco, California 94143
| | - Arturo Alvarez-Buylla
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research at UCSF, Department of Neurological Surgery, University of California, San Francisco, California 94143
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250
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Singh DK, Bose S, Kumar S. Regulation of expression of microRNAs by DNA methylation in lung cancer. Biomarkers 2016; 21:589-99. [PMID: 27122255 DOI: 10.3109/1354750x.2016.1171906] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Differential expression of miRNAs has been linked with lung carcinogenesis. Recent studies have indicated that DNA hypermethylation can lead to silencing of tumor suppressor miRNA-encoding genes. Restoration of tumor suppressor miRNAs using inhibitors of DNA methyltransferases has been shown to suppress cell proliferation, angiogenesis, invasion and metastasis implying that modulation of methylation of specific miRNAs can be used as novel therapeutic targets in lung cancer. In this review, we highlight tremendous progress which has been made in the identification of methylation-mediated silencing of miRNAs and their contribution in lung carcinogenesis along with the clinical utility of methylated miRNAs.
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Affiliation(s)
- Dhirendra Kumar Singh
- a Amity Institute of Biotechnology , Amity University , Noida , Uttar Pradesh , India
| | - Sudeep Bose
- a Amity Institute of Biotechnology , Amity University , Noida , Uttar Pradesh , India
| | - Sachin Kumar
- b Amity Institute of Molecular Medicine and Stem Cell Research , Amity University , Noida , Uttar Pradesh , India
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