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Messina A, Langlet F, Prevot V. [MicroRNAs: new players in the hypothalamic control of fertility]. Med Sci (Paris) 2017; 33:506-511. [PMID: 28612726 DOI: 10.1051/medsci/20173305014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
MicroRNAs are small non-coding RNAs that modulate gene expression post-transcriptionally. Discovered more than 15 years ago, their functions start to be unraveled. Increasing evidence points to an important functional role of microRNAs in brain development. In particular, miRNAs have recently been established to play a vital role in the mechanisms underlying the infantile rise in gonadotropin-releasing hormone (GnRH) production by neurons in the hypothalamus, a phenomenon necessary for the onset of puberty in mammals.
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Affiliation(s)
- Andrea Messina
- Service d'Endocrinologie, Diabétologie et Métabolisme, Hôpital universitaire de Lausanne, Lausanne, Suisse
| | - Fanny Langlet
- Columbia University Medical Center and Berrie Diabetes Center, New York, États-Unis
| | - Vincent Prevot
- Laboratoire de Développement et de Plasticité du Cerveau Neuroendocrine, FHU 1000 days for health, Inserm U1172, Université de Lille, Lille, France
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Ke J, Yao YL, Zheng J, Wang P, Liu YH, Ma J, Li Z, Liu XB, Li ZQ, Wang ZH, Xue YX. Knockdown of long non-coding RNA HOTAIR inhibits malignant biological behaviors of human glioma cells via modulation of miR-326. Oncotarget 2016; 6:21934-49. [PMID: 26183397 PMCID: PMC4673137 DOI: 10.18632/oncotarget.4290] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Accepted: 06/17/2015] [Indexed: 01/17/2023] Open
Abstract
Glioma is the most common and aggressive primary adult brain tumor. Long non-coding RNAs (lncRNAs) have important roles in a variety of biological properties of cancers. Here, we elucidated the function and the possible molecular mechanisms of lncRNA HOTAIR in human glioma U87 and U251 cell lines. Quantitative RT-PCR demonstrated that HOTAIR expression was up-regulated in glioma tissues and cell lines. Knockdown of HOTAIR exerted tumor-suppressive function in glioma cells. Further, HOTAIR was confirmed to be the target of miR-326 and miR-326 mediated the tumor-suppressive effects of HOTAIR knockdown on glioma cell lines. Moreover, over-expressed miR-326 reduced the FGF1 expression which played an oncogenic role in glioma by activating PI3K/AKT and MEK 1/2 pathways. In addition, the in vivo studies also supported the above findings. Taken together, knockdown of HOTAIR up-regulated miR-326 expression, and further inducing the decreased expression of FGF1, these results provided a comprehensive analysis of HOTAIR-miR-326-FGF1 axis in human glioma and provided a new potential therapeutic strategy for glioma treatment.
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Affiliation(s)
- Jing Ke
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang 110122, China.,Institute of Pathology and Pathophysiology, China Medical University, Shenyang 110122, China
| | - Yi-long Yao
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Jian Zheng
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Ping Wang
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang 110122, China.,Institute of Pathology and Pathophysiology, China Medical University, Shenyang 110122, China
| | - Yun-hui Liu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Jun Ma
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang 110122, China.,Institute of Pathology and Pathophysiology, China Medical University, Shenyang 110122, China
| | - Zhen Li
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Xiao-bai Liu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Zhi-qing Li
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang 110122, China.,Institute of Pathology and Pathophysiology, China Medical University, Shenyang 110122, China
| | - Zhen-hua Wang
- Department of Physiology, College of Basic Medicine, China Medical University, Shenyang 110122, China
| | - Yi-xue Xue
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang 110122, China.,Institute of Pathology and Pathophysiology, China Medical University, Shenyang 110122, China
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Coolen M, Bally-Cuif L. [miR-9: a key factor of the physiopathological regulation of the neural progenitor state]. Med Sci (Paris) 2013; 29:1010-7. [PMID: 24280505 DOI: 10.1051/medsci/20132911018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
microRNA are small non-coding RNA that modulate gene expression post-transcriptionally. Discovered 20 years ago, their individual functions start to be unraveled. Collectively, functional studies point to an important functional plasticity of microRNA, along the course of evolution, and across different cellular contexts. This is the case in particular for one of them, miR-9, a key factor of the regulation of the neural progenitor state in Vertebrates.
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Affiliation(s)
- Marion Coolen
- Laboratoire de neurobiologie et développement, UPR3294, Institut de neurobiologie Alfred Fessard, CNRS, avenue de la Terrasse, 91190 Gif-sur-Yvette, France
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