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Xia Z, Liu F, Zhang J, Liu L. Decreased Expression of MiRNA-204-5p Contributes to Glioma Progression and Promotes Glioma Cell Growth, Migration and Invasion. PLoS One 2015; 10:e0132399. [PMID: 26134825 PMCID: PMC4489611 DOI: 10.1371/journal.pone.0132399] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Accepted: 06/12/2015] [Indexed: 12/25/2022] Open
Abstract
Gliomas are the most common malignant primary brain tumors in adults and exhibit a spectrum of aberrantly aggressive phenotype. Although increasing evidence indicated that the deregulation of microRNAs (miRNAs) contributes to tumorigenesis and invasion, little is known about the roles of miR-204-5p in human gliomas. In the present study, the expression of miR-204-5p in clinical glioma tissues was measured by qRT-PCR. The effects of miR-204-5p on glioma cell growth and metastasis were examined by overexpressing or inhibiting miR-204-5p. We found that the expression level of miR-204-5p was significantly reduced in clinical glioma tissues compared with normal brain tissues. Moreover, we revealed that the introduction of miR-204-5p dramatically suppressed glioma cell growth, migration and invasion. Furthermore, mechanistic investigations revealed that RAB22A, a member of the RAS oncogene family, is a direct functional target of miR-204-5p in gliomas. In vivo, restoring miR-204-5p expression in glioma cells suppressed tumorigenesis and increased overall host survival. Our findings suggest that miR-204-5p is a cancer suppressor miRNA and overexpression of miR-204-5p is a novel glioma treatment strategy.
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Affiliation(s)
- Zhiqiang Xia
- Department of Microbiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Beijing 100730, China
- School of Basic Medicine, Peking Union Medical College, Beijing 100730, China
| | - Fang Liu
- Suzhou Wuzhong Hospital, Suzhou 210031, China
| | - Jian Zhang
- Suzhou Wuzhong Hospital, Suzhou 210031, China
| | - Li Liu
- Department of Microbiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Beijing 100730, China
- School of Basic Medicine, Peking Union Medical College, Beijing 100730, China
- * E-mail:
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Differential expression of microRNAs in postoperative radiotherapy sensitive and resistant patients with glioblastoma multiforme. Tumour Biol 2015; 36:4723-30. [PMID: 25758051 DOI: 10.1007/s13277-015-3121-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 01/14/2015] [Indexed: 01/11/2023] Open
Abstract
Glioblastoma multiforme (GBM) is the most malignant primary brain tumor and more resistant to radiotherapy. However, hetero-radiosensitivity occurs in different patients. MicroRNAs (miRNAs) play important roles in the initiation and progression of a multitude of tumors. The study aims to examine the different microRNAs expression profiles of postoperative radiotherapy sensitive and resistant patients with GBM, to make an inquiry about their potential role and discover a certain set of radio-sensitivity markers. Three paired samples from six GBM patients who had only been treated with postoperative radiotherapy were selected, and then, they were divided into radiotherapy sensitive group and resistant group according to their overall survivals, local recurrence rates, and Karnofsky Performance Scale scores. Expression profiles of miRNAs in these two groups were determined by the method of microarray assay. Comparing with resistant patients, 13 miRNAs were significantly upregulated and 10 miRNAs were greatly downregulated in sensitive group. Among them, four miRNAs were validated by quantitative RT-PCR. The differentially expressed miRNAs and their putative target genes were revealed by bioformatic analysis to play a role in cell signaling, proliferation, aging, and death. High-enrichment pathway analysis identified that some classical pathways participated in numerous metabolic processes, especially in cell cycle regulation, such as mTOR, MAPK, TGF-beta, and PI3K-Akt signaling pathways. Our research will contribute to identifying clinical diagnostic markers and therapeutic targets in the treatment of GBM by postoperative radiotherapy.
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Yang HW, Xing H, Johnson MD. A major role for microRNAs in glioblastoma cancer stem-like cells. Arch Pharm Res 2015; 38:423-34. [PMID: 25683176 DOI: 10.1007/s12272-015-0574-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 02/05/2015] [Indexed: 01/06/2023]
Abstract
Studies have demonstrated that miRNAs contribute to the maintenance and phenotype of in several cancer types. This review will focus on the roles of a few well studied miRNAs in cancer stem-like cells of glioblastoma.
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Affiliation(s)
- Hong Wei Yang
- Department of Neurosurgery, Brigham and Women's Hospital/Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA,
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miR-155 contributes to the progression of glioma by enhancing Wnt/β-catenin pathway. Tumour Biol 2015; 36:5323-31. [PMID: 25672607 DOI: 10.1007/s13277-015-3193-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 01/30/2015] [Indexed: 10/24/2022] Open
Abstract
As the most common brain tumor, glioma is featured with poor prognosis due to its resistance to current therapeutic strategies. The elucidation of etiology is believed to facilitate the development of novel effective anti-glioma treatment modalities. As a confirmed oncogenic microRNA (miRNA) in many other types of cancers, the role of miR-155 in glioma is still unknown. This study is aimed to study the role of miR-155 in the progression of glioma. Our results revealed that miR-155 was overexpressed in the collected glioma specimen, compared with noncancerous brain tissues. The suppression of miR-155 attenuated the proliferation of glioma cells and the activation of Wnt pathway. Silencing miR-155 was also able to suppress the growth of U-87 MG glioma xenografts in mice. Pearson analysis indicated that miR-155 level was inversely correlated with the abundance of HMG-box transcription factor 1 (HBP1), a strong Wnt pathway inhibitor, in glioma samples. Further experiments confirmed that miR-155 suppressed the expression of HBP1 by targeting the putative miRNA recognition elements (MREs) within its messenger RNA (mRNA) 3' untranslated region (UTR). Furthermore, HBP1 small interfering RNA (siRNA) abolished the effect of miR-155 suppression on the proliferation of glioma and the activation of Wnt pathway. Taken together, miR-155 promoted the progression of glioma by enhancing the activation of Wnt pathway. Thus, targeting miR-155 may be an effective strategy for glioma treatment.
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Yin F, Zhang JN, Wang SW, Zhou CH, Zhao MM, Fan WH, Fan M, Liu S. MiR-125a-3p regulates glioma apoptosis and invasion by regulating Nrg1. PLoS One 2015; 10:e0116759. [PMID: 25560389 PMCID: PMC4283963 DOI: 10.1371/journal.pone.0116759] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 12/12/2014] [Indexed: 01/22/2023] Open
Abstract
The current study was designed to examine the functional role and mechanism of miR-125a-3p in glioma development. Quantitative RT-PCR was used to evaluate miR-125a-3p expression in 60 glioma cases of different malignant grades. Then, the clinic pathologic significance of miR-125a-3p expression was determined in combination with the prognosis of the patients. In addition, the effects and mechanisms of miR-125a-3p on the proliferation, apoptosis and invasion of glioma cells were further investigated. The results showed that the expression of miR-125a-3p was decreased significantly in most malignant glioma samples relative to normal brain tissues and glioma tissues of low-malignant degree. Further kaplan-meier survival analysis showed that the lower expression of miR-125a-3p was associated with a poor prognosis of GBM patients. Functional analysis showed that the reintroduction of miR-125a-3p into glioblastoma cell lines induces markedly the apoptosis and suppresses the proliferation and migration of glioblastoma cells in vitro and in vivo. Luciferase assay and Western blot analysis revealed that Nrg1 is a direct target of miR-125a-3p. Furthermore, an increased expression of Nrg1 could reverse the effects of overexpression of miR-125a-3p on the proliferation, apoptosis and migration of glioblastoma cells. These findings suggest that miR-125a-3p performed an important role in glioma development mediated by directly regulating the expression of Nrg1. This study also provides a potential target for diagnosis and treatment of malignant glioma.
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Affiliation(s)
- Feng Yin
- Department of Neurosurgery, the Chinese PLA Navy General Hospital, Beijing, 100048, China
| | - Jian Ning Zhang
- Department of Neurosurgery, the Chinese PLA Navy General Hospital, Beijing, 100048, China
| | - Shu Wei Wang
- Department of Neurosurgery, the Chinese PLA Navy General Hospital, Beijing, 100048, China
| | - Chun Hui Zhou
- Department of Neurosurgery, the Chinese PLA Navy General Hospital, Beijing, 100048, China
| | - Ming Ming Zhao
- Department of Neurosurgery, the Chinese PLA Navy General Hospital, Beijing, 100048, China
| | - Wen Hong Fan
- Department of Brain Protection & Plasticity Research, Beijing Institute of Basic Medical Sciences, Beijing, 100850, China
| | - Ming Fan
- Department of Brain Protection & Plasticity Research, Beijing Institute of Basic Medical Sciences, Beijing, 100850, China
- * E-mail: (SL); (MF)
| | - Shuang Liu
- Department of Neurosurgery, the Chinese PLA Navy General Hospital, Beijing, 100048, China
- * E-mail: (SL); (MF)
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Li L, Zhang L, Liu G, Feng R, Jiang Y, Yang L, Zhang S, Liao M, Hua J. Synergistic transcriptional and post-transcriptional regulation of ESC characteristics by core pluripotency transcription factors in protein-protein interaction networks. PLoS One 2014; 9:e105180. [PMID: 25171496 PMCID: PMC4149371 DOI: 10.1371/journal.pone.0105180] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Accepted: 07/17/2014] [Indexed: 12/26/2022] Open
Abstract
The molecular mechanism that maintains the pluripotency of embryonic stem cells (ESCs) is not well understood but may be reflected in complex biological networks. However, there have been few studies on the effects of transcriptional and post-transcriptional regulation during the development of ESCs from the perspective of computational systems biology. In this study, we analyzed the topological properties of the "core" pluripotency transcription factors (TFs) OCT4, SOX2 and NANOG in protein-protein interaction networks (PPINs). Further, we identified synergistic interactions between these TFs and microRNAs (miRNAs) in PPINs during ESC development. Results show that there were significant differences in centrality characters between TF-targets and non-TF-targets in PPINs. We also found that there was consistent regulation of multiple "core" pluripotency TFs. Based on the analysis of shortest path length, we found that the module properties were not only within the targets regulated by common or multiple "core" pluripotency TFs but also between the groups of targets regulated by different TFs. Finally, we identified synergistic regulation of these TFs and miRNAs. In summary, the synergistic effects of "core" pluripotency TFs and miRNAs were analyzed using computational methods in both human and mouse PPINs.
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Affiliation(s)
- Leijie Li
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Liangcai Zhang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
- Department of Statistics, Rice University, Houston, TX, United States of America
| | - Guiyou Liu
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
- Genome Analysis Laboratory, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China
| | - Rennan Feng
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, China
| | - Yongshuai Jiang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Lei Yang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
| | - Shihua Zhang
- Department of Biostatistics, School of Science, Anhui Agricultural University, Hefei, China
- * E-mail: (SZ); (ML); (JH)
| | - Mingzhi Liao
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
- * E-mail: (SZ); (ML); (JH)
| | - Jinlian Hua
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, China
- * E-mail: (SZ); (ML); (JH)
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