101
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Wang C, Zhang ZZ, Yang W, Ouyang ZH, Xue JB, Li XL, Zhang J, Chen WK, Yan YG, Wang WJ. MiR-210 facilitates ECM degradation by suppressing autophagy via silencing of ATG7 in human degenerated NP cells. Biomed Pharmacother 2017; 93:470-479. [PMID: 28667916 DOI: 10.1016/j.biopha.2017.06.048] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 06/02/2017] [Accepted: 06/12/2017] [Indexed: 12/26/2022] Open
Abstract
Intervertebral disc degeneration (IDD) is thought to be the most common cause of low back pain. Dysregulation of microRNAs (miRNAs) is involved in the development of IDD. The aim of this study was to explore the influence of miR-210 on type II collagen (Col II) and aggrecan expression and possible mechanisms in human degenerated nucleus pulposus (NP) cells. Our results showed that miR-210 levels were significantly increased in degenerated NP tissues compared with healthy controls, and positively correlated with disc degeneration grade. By gain-of-function and loss-of-function studies in human degenerated NP cells, miR-210 was shown to inhibit autophagy and then upregulate MMP-3 and MMP-13 expression, leading to increased degradation of Col II and aggrecan. Autophagy-related gene 7 (ATG7) was identified as a direct target of miR-210. Knockdown of ATG7 by small interfering RNA (siRNA) abrogated the effects of miR-210 inhibitor on MMP-3, MMP-13, Col II and aggrecan expression. Taken together, these results suggest that miR-210 inhibits autophagy via silencing of ATG7, leading to increased Col II and aggrecan degradation in human degenerated NP cells.
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Affiliation(s)
- Cheng Wang
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Zi-Zhen Zhang
- School of Nursing, Hunan Polytechnic of Environment and Biology, Hengyang, Hunan 421001, China
| | - Wei Yang
- Department of Hand Microsurgery, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Zhi-Hua Ouyang
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Jing-Bo Xue
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Xue-Lin Li
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Jian Zhang
- Department of Hand Microsurgery, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Wen-Kang Chen
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Yi-Guo Yan
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Wen-Jun Wang
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China.
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102
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Cong L, Zhu Y, Tu G. A bioinformatic analysis of microRNAs role in osteoarthritis. Osteoarthritis Cartilage 2017; 25:1362-1371. [PMID: 28336453 DOI: 10.1016/j.joca.2017.03.012] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 02/24/2017] [Accepted: 03/15/2017] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To evaluate the underlying function of microRNAs (miRNAs) in osteoarthritis (OA). DESIGN A bioinformatic analysis of miRNAs-OA studies was completed in multiple databases. All identified articles were assessed using specific inclusion and exclusion criteria (Eligible case-control studies for the present study included those which investigated miRNAs differential expression in cartilage tissues and cells of OA and controls. Abstracts, case reports, conference presentations, editorials, and expert opinions were excluded.). We performed bioinformatic analysis and assessed which miRNAs are commonly elevated or decreased in cartilage of OA, and assessed putative targets of these miRNAs using TargetScan, Database for Annotation, Visualization and Integrated Discovery (DAVID), FunRich and String. RESULTS Fifty seven studies were included in this study. Our current review has identified 46 differentially expressed miRNAs involved in autophagy, inflammation, chondrocyte apoptosis, chondrocyte differentiation & homeostasis, chondrocyte metabolism and degradation of the extracellular matrix (ECM). Additionally, our literature search identified a wide range of miRNAs that have been shown to be differentially expressed in OA. The function of up-regulated miRNAs primarily target nucleus, whereas the function of down-regulated miRNAs primarily target transcription. CONCLUSIONS Comprehensive analysis of all miRNAs studies reveals cooperation in miRNA signatures and suggests that there may be two biologically synergic classes of miRNAs that are associated with OA. This finding suggests that miRNAs may be useful as diagnostic biomarkers and/or may provide new therapeutic targets in OA. Furthermore, a better understanding of the targets of these miRNAs will accelerate biomedical discoveries and improve clinical care based on new knowledge of OA-related disease mechanisms.
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Affiliation(s)
- L Cong
- Department of Orthopedic Surgery, The First Hospital of China Medical University, No.155 Nanjing Bei Street, Heping District, Shenyang City, Liaoning Province, 110001, PR China.
| | - Y Zhu
- Department of Orthopedic Surgery, The First Hospital of China Medical University, No.155 Nanjing Bei Street, Heping District, Shenyang City, Liaoning Province, 110001, PR China
| | - G Tu
- Department of Orthopedic Surgery, The First Hospital of China Medical University, No.155 Nanjing Bei Street, Heping District, Shenyang City, Liaoning Province, 110001, PR China
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103
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Wang X, Lv G, Li J, Wang B, Zhang Q, Lu C. LncRNA-RP11-296A18.3/miR-138/HIF1A Pathway Regulates the Proliferation ECM Synthesis of Human Nucleus Pulposus Cells (HNPCs). J Cell Biochem 2017; 118:4862-4871. [PMID: 28543639 DOI: 10.1002/jcb.26166] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 05/23/2017] [Indexed: 12/18/2022]
Abstract
During the process of Intervertebral disc degeneration (IDD), nucleus pulposus apoptosis increases, extracellular matrix (ECM) alters and/or degrades, abnormal proliferation of cells forms cell clusters, and the expression of various inflammatory factors increases. Thus, regulation of human nucleus pulposus cell (HNPC) proliferation and ECM synthesis present promising strategies for IDD treatment. Accumulating evidence indicates that non-coding RNAs are involved in various cellular processes, including cell proliferation, differentiation, apoptosis, and metastasis. High expression of long non-coding RNA (lncRNA) RP11-296A18.3, as well as a low expression of miR-138 during the IDD process has been reported; yet their functional roles in HNPC proliferation and ECM synthesis still remain unclear. MTT and BrdU assays showed that knockdown of RP11-296A18.3 inhibited the proliferation of HNPC. The ECM marker, MMP-13 and Collagen I expressions were also reduced. Bioinformatics target prediction, qPCR, and luciferase assays identified LncRNA-RP11-296A18.3 interacted with miR-138. Moreover, RP11-296A18.3 regulates HNPC proliferation and ECM synthesis through miR-138. As the target gene of miR-138, hypoxia-inducible factor 1-alpha (HIF1A) was closely associated with cell proliferation which was also regulated by RP11-296A18.3 via miR-138. Immunochemistry and qPCR results showed that miR-138 expression was inversely correlated to RP11-296A18.3 and HIF1A in IDD tissues, respectively; RP11-296A18.3 was positively correlated to HIF1A. We revealed that RP11-296A18.3 promote HIF1A expression through sponging miR-138, thus to promote HNPC proliferation and ECM synthesis. Targeting RP11-296A18.3 to rescue miR-138 expression in HNPCs and IDD tissues presents a promising strategy for IDD improvement. J. Cell. Biochem. 118: 4862-4871, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Xiaobin Wang
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Guohua Lv
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Jing Li
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Bing Wang
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Qianshi Zhang
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Chang Lu
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
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104
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Jin C, Feng Y, Ni Y, Shan Z. MicroRNA-610 suppresses osteosarcoma oncogenicity via targeting TWIST1 expression. Oncotarget 2017; 8:56174-56184. [PMID: 28915582 PMCID: PMC5593553 DOI: 10.18632/oncotarget.17045] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 03/24/2017] [Indexed: 12/20/2022] Open
Abstract
Osteosarcoma is the most frequent primary bone tumor affects adolescents and young adults. Recently, microRNAs (miRNAs) are short, non-coding and endogenous RNAs that played as important roles in the initiation and progression of tumors. In this study, we try to explore the biological function and expression of miR-610 in the osteosarcoma. We showed that miR-610 expression was downregulated in the osteosarcoma tissues and cell lines. Elevated expression of miR-610 suppressed the osteosarcoma cell proliferation, cell cycle, invasion and EMT program. Moreover, overexpression of miR-610 increased sensitivity of MG-63 and U2OS cells to cisplatin. Twist1 was identified as a direct target gene of miR-610 in the osteosarcoma cell. Furthermore, we demonstrated that Twist1 was upregulated in the osteosarcoma tissues and cell lines. The expression of Twist1 was negatively associated with the expression of miR-610 expression in the osteosarcoma tissues. Ectopic expression of Twist1 inhibited the sensitivity of miR-610-overexpressing MG-63 cells to cisplatin. We also showed that overexpression of Twist1 increased the proliferation and invasion of miR-610-overexpressing MG-63 cells. These data indicated that ectopic expression of miR-610 suppressed the osteosarcoma cell proliferation, cell cylce, invasion and increased the sensitivity of osteosarcoma cells to cisplatin through targeting the Twist1 expression.
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Affiliation(s)
- Chi Jin
- The Third Department of Orthopaedics, Central Hospital of Cangzhou City, Cangzhou, Hebei, China
| | - Yongjian Feng
- The Fourth Department of Orthopaedics, Central Hospital of Cangzhou City, Cangzhou, Hebei, China
| | - Yongjian Ni
- The Third Department of Orthopaedics, Central Hospital of Cangzhou City, Cangzhou, Hebei, China
| | - Zhonglin Shan
- The Third Department of Orthopaedics, Central Hospital of Cangzhou City, Cangzhou, Hebei, China
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105
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Bai Y, Lu C, Zhang G, Hou Y, Guo Y, Zhou H, Ma X, Zhao G. Overexpression of miR-519d in lung adenocarcinoma inhibits cell proliferation and invasion via the association of eIF4H. Tumour Biol 2017; 39:1010428317694566. [PMID: 28351305 DOI: 10.1177/1010428317694566] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Lung cancer is one of the deadliest types of cancer worldwide due to its high mortality rate. Adenocarcinoma constitutes 20%-30% of all lung cancers. In recent years, studies on the mechanisms of lung tumorigenesis and development have in part focused on the microRNAs for their crucial role in the progress of different cancers. As for our study, we demonstrated that miR-519d was differently downregulated and eIF4H was significantly overexpressed in lung adenocarcinoma via the detection of quantitative real-time polymerase chain reaction compared with the adjacent normal tissues. Furthermore, Cell Counting Kit-8 assay, colony formation assay, xenograft tumor experiment, Ki67 immunohistochemistry assay and transwell assay were performed to explain that the upregulated miR-519d could inhibit the proliferation and invasion of A549 and H1299 cells. To further advance our understanding of the mechanisms of miR-519d, we performed the bioinformatics analysis and the luciferase report assay. The results from these procedures revealed eIF4H to be one of the targets of miR-519d. Downregulated eIF4H was analogous to the overexpressed miR-519d obtained from miR-519d agomir and si-eIF4H transfection. In summary, it can be concluded that miR-519d targets eIF4H in lung adenocarcinoma to inhibit cell proliferation and invasion. This mechanism may offer new insights into the tumorigenesis and development of lung adenocarcinoma.
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Affiliation(s)
- Yong Bai
- 1 Department of Respiratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chunya Lu
- 1 Department of Respiratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Guojun Zhang
- 1 Department of Respiratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yu Hou
- 2 Medical Laboratory Science, Zhengzhou University, Zhengzhou, China
| | - Yanjie Guo
- 3 School of Clinical Medicine, Zhengzhou University, Zhengzhou, China
| | - Heqi Zhou
- 3 School of Clinical Medicine, Zhengzhou University, Zhengzhou, China
| | - Xiaojingnan Ma
- 4 School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Guoqiang Zhao
- 4 School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
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106
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Ghannam M, Jumah F, Mansour S, Samara A, Alkhdour S, Alzuabi MA, Aker L, Adeeb N, Massengale J, Oskouian RJ, Tubbs RS. Surgical anatomy, radiological features, and molecular biology of the lumbar intervertebral discs. Clin Anat 2017; 30:251-266. [PMID: 27997062 DOI: 10.1002/ca.22822] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 12/04/2016] [Indexed: 01/07/2023]
Abstract
The intervertebral disc (IVD) is a joint unique in structure and functions. Lying between adjacent vertebrae, it provides both the primary support and the elasticity required for the spine to move stably. Various aspects of the IVD have long been studied by researchers seeking a better understanding of its dynamics, aging, and subsequent disorders. In this article, we review the surgical anatomy, imaging modalities, and molecular biology of the lumbar IVD. Clin. Anat. 30:251-266, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Malik Ghannam
- An-Najah National University Hospital, Nablus, Palestine
| | - Fareed Jumah
- An-Najah National University Hospital, Nablus, Palestine
| | - Shaden Mansour
- An-Najah National University Hospital, Nablus, Palestine
| | - Amjad Samara
- An-Najah National University Hospital, Nablus, Palestine
| | - Saja Alkhdour
- An-Najah National University Hospital, Nablus, Palestine
| | | | - Loai Aker
- An-Najah National University Hospital, Nablus, Palestine
| | - Nimer Adeeb
- Department of Neurosurgery, Boston Medical Center, Boston University, Massachusetts
| | - Justin Massengale
- Department of Neurosurgery, Boston Medical Center, Boston University, Massachusetts
| | | | - R Shane Tubbs
- Department of Anatomical Sciences, St. George's University, Grenada.,Seattle Science Foundation, Seattle, Washington
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107
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Li Z, Shen J, Chan MTV, Wu WKK. MicroRNA-379 suppresses osteosarcoma progression by targeting PDK1. J Cell Mol Med 2017; 21:315-323. [PMID: 27781416 PMCID: PMC5264134 DOI: 10.1111/jcmm.12966] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 08/04/2016] [Indexed: 12/12/2022] Open
Abstract
Osteosarcoma is the most common primary bone tumour. Increasing evidence has demonstrated the pathogenic role of microRNA (miRNAs) dysregulation in tumour development. miR-379 was previously reported to function as an oncogenic or tumour-suppressing miRNA in a tissue-dependent manner. However, its function in osteosarcoma remains unknown. In this study, we found that the expression of miR-379 was downregulated in osteosarcoma tissues and cell lines. Further functional characterization revealed that miR-379 suppressed osteosarcoma cell proliferation and invasion in vitro and retarded the growth of osteosarcoma xenografts in vivo. Mechanistically, PDK1 was identified as the direct target of miR-379 in osteosarcoma, in which PDK1 expression was up-regulated and showed inverse correlation with miR-379. Enforced expression of PDK1 promoted osteosarcoma cell proliferation and rescued the anti-proliferative effect of miR-379. These data suggest that miR-379 could function as a tumour-suppressing miRNA via targeting PDK1 in osteosarcoma.
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Affiliation(s)
- Zheng Li
- Department of Orthopaedic SurgeryPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Jianxiong Shen
- Department of Orthopaedic SurgeryPeking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Matthew T. V. Chan
- Department of Anaesthesia and Intensive CareState Key Laboratory of Digestive DiseaseLKS Institute of Health SciencesThe Chinese University of Hong KongHong KongChina
| | - William Ka Kei Wu
- Department of Anaesthesia and Intensive CareState Key Laboratory of Digestive DiseaseLKS Institute of Health SciencesThe Chinese University of Hong KongHong KongChina
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108
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Genome-Wide Identification of Long Noncoding RNAs in Human Intervertebral Disc Degeneration by RNA Sequencing. BIOMED RESEARCH INTERNATIONAL 2016; 2016:3684875. [PMID: 28097131 PMCID: PMC5206422 DOI: 10.1155/2016/3684875] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 11/24/2016] [Indexed: 01/07/2023]
Abstract
Long noncoding RNAs (lncRNAs) are emerging as crucial players in a myriad of biological processes. However, the precise mechanism and functions of most lncRNAs are poorly characterized. In this study, we presented genome-wide identification of lncRNAs in the patients with intervertebral disc degeneration (IDD) and spinal cord injury (control) using RNA sequencing (RNA-seq). A total of 124.6 million raw reads were yielded using Hiseq 2500 platform and approximately 88% clean reads could be aligned to human reference genome in both IDD and control groups. RNA-seq profiling indicated that 1,854 lncRNAs were differentially expressed (log2 fold change ≥ 1 or ≤−1, p < 0.05), in which 1,530 could potentially target 6,386 genes via cis-regulatory effects. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis for these target genes suggested that lncRNAs were involved in diverse pathways, such as lysosome, focal adhesion, and MAPK signaling. In addition, a competing endogenous RNA (ceRNA) network was constructed for analyzing the function of lncRNAs. Further, quantitative real time PCR (qRT-PCR) was used to confirm the differentially expressed lncRNAs and ceRNA network. In conclusion, our results present the first global identification of lncRNAs in IDD and may provide candidate diagnostic biomarkers for IDD treatment.
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109
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miR-454 functions as an oncogene by inhibiting CHD5 in hepatocellular carcinoma. Oncotarget 2016; 6:39225-34. [PMID: 26287602 PMCID: PMC4770768 DOI: 10.18632/oncotarget.4407] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 07/17/2015] [Indexed: 01/04/2023] Open
Abstract
Previous studies showed that miR-454 acted as an oncogene or tumor suppressor in cancer. However, its function in HCC remains unknown. In this study, we found that miR-454 expression was upregulated in HCC cell lines and tissues. Knockdown of miR-454 inhibited HCC cell proliferation and invasion and epithelial mesenchymal transition (EMT), whereas overexpression of miR-454 promoted HCC cell proliferation and invasion and EMT. Furthermore, we identified the CHD5 as a direct target of miR-454. CHD5 was downregulated in HCC tissues and cell lines and the expression level of CHD5 was inversely correlated with the expression of miR-454 in HCC tissues. In addition, knockdown of miR-454 inhibited the growth of HepG2-engrafted tumors in vivo. Taken together, these results indicated that miR-454 functioned as an oncogene in HCC.
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110
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Guan A, Wang H, Li X, Xie H, Wang R, Zhu Y, Li R. MiR-330-3p inhibits gastric cancer progression through targeting MSI1. Am J Transl Res 2016; 8:4802-4811. [PMID: 27904681 PMCID: PMC5126323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 09/12/2016] [Indexed: 06/06/2023]
Abstract
Increasing evidences demonstrated that microRNAs (miRNAs) play critical roles in the human tumor development and progression. In our study, we found that miR-330-3p expression was downregulated in gastric cancer cell lines and tissues. Ectopic expression of miR-330-3p suppressed the gastric cancer cell proliferation, colony formation and migration. Overexpression of miR-330-3p promoted E-cadherin expression and inhibited the expression of N-cadherin, vimentin and snail. We identified Musashi-1 (MSI1) as a direct target gene of miR-330-3p in gastric cancer cell. In addition, MSI1 was upregulated in gastric cancer cell lines and tissues and the MSI1 expression was inversely correlated with miR-330-3p expression in gastric cancer tissues. MiR-330-3p expression was increased in gastric cancer cells after treated with histone deacetylase inhibitor trichostatin A (TSA) and DNA methylation inhibitor 5-aza-CdR (AZA). These indicated that downregulated expression of miR-330-3p was partly mediated by gene promoter region hypermethylation. These results suggested that miR-330-3p acted as a tumor suppressor gene in GC.
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Affiliation(s)
- Aoran Guan
- Department of General Surgery, The Affiliated Yan an Hospital of Kunming Medical UniversityKunming 650051, Yunnan, China
| | - Hui Wang
- Department of Gastroenterology, The Affiliated Yan an Hospital of Kunming Medical UniversityKunming 650051, Yunnan, China
| | - Xun Li
- Department of General Surgery, The Affiliated Yan an Hospital of Kunming Medical UniversityKunming 650051, Yunnan, China
| | - Hui Xie
- Department of General Surgery, The Affiliated Yan an Hospital of Kunming Medical UniversityKunming 650051, Yunnan, China
| | - Ruotian Wang
- Department of General Surgery, The Affiliated Yan an Hospital of Kunming Medical UniversityKunming 650051, Yunnan, China
| | - Yankun Zhu
- Department of General Surgery, The Affiliated Yan an Hospital of Kunming Medical UniversityKunming 650051, Yunnan, China
| | - Ruhong Li
- Department of General Surgery, The Affiliated Yan an Hospital of Kunming Medical UniversityKunming 650051, Yunnan, China
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111
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Ge W, Han C, Wang J, Zhang Y. MiR-300 suppresses laryngeal squamous cell carcinoma proliferation and metastasis by targeting ROS1. Am J Transl Res 2016; 8:3903-3911. [PMID: 27725869 PMCID: PMC5040687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 01/18/2016] [Indexed: 06/06/2023]
Abstract
Laryngeal squamous cell carcinoma (LSCC) is a common aggressive head and neck cancer with high mortality and incidence. MicroRNAs (miRNAs) are short, non-coding and endogenous RNAs that posttranscriptionally inhibit gene expression. In this study, we showed that miR-300 expression was downregulated in LSCC tissues compared with adjacent no-tumor tissues. MiR-300 overexpression inhibited Hep-2 cell proliferation, as well as the expression of ki-67 and PCNA. Moreover, overexpression of miR-300 repressed the cell invasion in Hep-2 cells. We identified c-ros oncogene 1 receptor tyrosine kinase (ROS1) as a direct target gene of miR-300 in Hep-2 cell. Furthermore, ROS1 expression was upregulated in LSCC tissues compared with adjacent no-tumor tissues. Interesting, there were an inverse correlation between ROS1 and miR-300 expression in the LSCC tissues. Overexpression of ROS1 increased the Hep-2 cells proliferation and invasion. Overexpression of ROS1 abrogated miR-300 induced cell growth and invasion inhibition. Therefore, our data suggested that miR-300 acted as a tumor suppressive gene in LSCC.
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Affiliation(s)
- Wensheng Ge
- Department of Otolaryngology, Liaocheng People’s Hospital and EENT HospitalLiaocheng 252000, Shandong, China
| | - Chaodong Han
- Department of Otolaryngology, Liaocheng People’s Hospital and EENT HospitalLiaocheng 252000, Shandong, China
| | - Jing Wang
- Department of Otolaryngology, Liaocheng People’s Hospital and EENT HospitalLiaocheng 252000, Shandong, China
| | - Yunping Zhang
- Department of Dermatology, Liaocheng People’s Hospital and EENT HospitalLiaocheng 252000, Shandong, China
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112
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Li Z, Shen J, Chan MTV, Wu WKK. The role of microRNAs in intrahepatic cholangiocarcinoma. J Cell Mol Med 2016; 21:177-184. [PMID: 27619971 PMCID: PMC5192883 DOI: 10.1111/jcmm.12951] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 07/14/2016] [Indexed: 12/14/2022] Open
Abstract
Intrahepatic cholangiocarcinoma (ICC) is the second most common primary hepatic malignancy with poor prognosis. Despite improvements in its diagnosis and therapy, the prognosis for ICC patients remains poor. An improved understanding of ICC pathogenesis and consequential identification of novel therapeutic targets would improve the prognosis of ICC patients. MicroRNAs (miRNAs) are a class of highly conserved, endogenous, small non‐coding RNA molecules of 18–23 nucleotides in length, which regulate gene expression through complementary base‐pairing with target messenger RNAs and subsequent gene silencing. Several studies have shown deregulated expression of miRNAs in ICC cell lines and tissues, in which these miRNAs play important roles in ICC apoptosis, cell proliferation, invasion, migration and metastasis. In this review, we illustrate the potential role of miRNA in the pathogenesis of ICC and explore the possibilities of using miRNAs as prognostic and diagnostic markers, as well as therapeutic targets in ICC.
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Affiliation(s)
- Zheng Li
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jianxiong Shen
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Matthew T V Chan
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong, China
| | - William Ka Kei Wu
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong, China.,State Key Laboratory of Digestive Daase, LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
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113
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Cao C, Zhang H, Zhao L, Zhou L, Zhang M, Xu H, Han X, Li G, Yang X, Jiang Y. miR-125b targets DNMT3b and mediates p53 DNA methylation involving in the vascular smooth muscle cells proliferation induced by homocysteine. Exp Cell Res 2016; 347:95-104. [PMID: 27426728 DOI: 10.1016/j.yexcr.2016.07.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Revised: 07/11/2016] [Accepted: 07/13/2016] [Indexed: 12/22/2022]
Abstract
MicroRNAs (miRNAs) are short non-coding RNA and play crucial roles in a wide array of biological processes, including cell proliferation, differentiation and apoptosis. Our previous studies found that homocysteine(Hcy) can stimulate the proliferation of vascular smooth muscle cells (VSMCs), however, the underlying mechanisms were not fully elucidated. Here, we found proliferation of VSMCs induced by Hcy was of correspondence to the miR-125b expression reduced both in vitro and in the ApoE knockout mice, the hypermethylation of p53, its decreased expression, and DNA (cytosine-5)-methyltransferase 3b (DNMT3b) up-regulated. And, we found DNMT3b is a target of miR-125b, which was verified by the Dual-Luciferase reporter assay and western blotting. Besides, the siRNA interference for DNMT3b significantly decreased the methylation level of p53, which unveiled the causative role of DNMT3b in p53 hypermethylation. miR-125b transfection further confirmed its regulative roles on p53 gene methylation status and the VSMCs proliferation. Our data suggested that a miR-125b-DNMT3b-p53 signal pathway may exist in the VSMCs proliferation induced by Hcy.
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Affiliation(s)
- ChengJian Cao
- Key Laboratory of Basic Research in Cardio-Cerebral Vascular Diseases, Ningxia Medical University, Yinchuan, China
| | - HuiPing Zhang
- Department of Prenatal Diagnosis Center, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Li Zhao
- Department of Medical Laboratory, Ningxia Medical University, Yinchuan, China
| | - Longxia Zhou
- Department of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Minghao Zhang
- Key Laboratory of Basic Research in Cardio-Cerebral Vascular Diseases, Ningxia Medical University, Yinchuan, China; Department of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Hua Xu
- Key Laboratory of Basic Research in Cardio-Cerebral Vascular Diseases, Ningxia Medical University, Yinchuan, China; Department of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Xuebo Han
- Department of Medical Laboratory, Ningxia Medical University, Yinchuan, China
| | - Guizhong Li
- Key Laboratory of Basic Research in Cardio-Cerebral Vascular Diseases, Ningxia Medical University, Yinchuan, China; Department of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Xiaoling Yang
- Key Laboratory of Basic Research in Cardio-Cerebral Vascular Diseases, Ningxia Medical University, Yinchuan, China; Department of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - YiDeng Jiang
- Key Laboratory of Basic Research in Cardio-Cerebral Vascular Diseases, Ningxia Medical University, Yinchuan, China; Department of Basic Medicine, Ningxia Medical University, Yinchuan, China.
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Li S, Zhao W, Xu Q, Yu Y, Yin C. MicroRNA-765 regulates neural stem cell proliferation and differentiation by modulating Hes1 expression. Am J Transl Res 2016; 8:3115-3123. [PMID: 27508032 PMCID: PMC4969448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 01/23/2016] [Indexed: 06/06/2023]
Abstract
Neural stem cells (NSCs) are multipotent, self-renewing and undifferentiated cells that have the ability to differentiate to both glial and neuronal lineages. miRNAs act a key role in regulating neuronal fate and self-renewal of NSCs. In this study, we found that ectopic expression of miR-765 promoted NSCs proliferation. Moreover, miR-765 overexpression increased the ki-67 and β-tubulin-III expression inNSCs. Overexpression of miR-765 inhibited the expression of GFAP in NSCs. Furthermore, Hes1 was identified as a direct target gene of miR-765 in NSCs. Overexpression of Hes1 decreased miR-765-induced proliferation of NSCs and inhibited NSCs differentiation to neurons in miR-765-treated NSCs. These results demonstrated that miR-765 acted a crucial role in NSCs differentiation and proliferation by inhibiting Hes1 expression.
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Affiliation(s)
- Siou Li
- Department of Neurology, Hongqi Hospital, Mudanjiang Medical University Aimin District, Mudanjiang, Heilongjiang, China 157011
| | - Weina Zhao
- Department of Neurology, Hongqi Hospital, Mudanjiang Medical University Aimin District, Mudanjiang, Heilongjiang, China 157011
| | - Qing Xu
- Department of Neurology, Hongqi Hospital, Mudanjiang Medical University Aimin District, Mudanjiang, Heilongjiang, China 157011
| | - Yang Yu
- Department of Neurology, Hongqi Hospital, Mudanjiang Medical University Aimin District, Mudanjiang, Heilongjiang, China 157011
| | - Changhao Yin
- Department of Neurology, Hongqi Hospital, Mudanjiang Medical University Aimin District, Mudanjiang, Heilongjiang, China 157011
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Dysregulated miR-133a Mediates Loss of Type II Collagen by Directly Targeting Matrix Metalloproteinase 9 (MMP9) in Human Intervertebral Disc Degeneration. Spine (Phila Pa 1976) 2016; 41:E717-E724. [PMID: 26656045 DOI: 10.1097/brs.0000000000001375] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A microRNA (miRNA) study using Solexa sequencing. OBJECTIVE The purpose of this study was to identify intervertebral disc degeneration (IDD)-specific miRNA expression profile, and to validate its biological function. SUMMARY OF BACKGROUND DATA Accumulating evidence indicates that miRNAs play a critical role in IDD, but the role of specific miRNAs involved in this entity remains unclear. METHODS MiRNA expression profile was determined in nucleus pulposus (NP) tissues from patients with IDD and controls, employing Solexa sequencing and quantitative real-time PCR (qRT-PCR). Biological functions of differential expression miRNAs were further investigated. Luciferase reporter assays and western blotting were performed to determine miRNA targets. RESULTS We identified 31 miRNAs that were differentially expressed (22 upregulated and nine downregulated) in patients compared with controls. After qRT-PCR confirmation, miR-133a was significantly down-regulated in degenerative NP tissues. Moreover, its level was inversely correlated with grade of disc degeneration. Through gain- and loss-of-function studies, miR-133a was demonstrated to significantly promote type II collagen expression in NP cells. MMP9 was identified as a target of miR-133a. Knockdown of MMP9 induced effects on NP cells similar to those induced by miR-133a. Expression of MMP9 was inversely correlated with miR-133a expression in degenerative NP tissues. CONCLUSION These results suggest that the downregulation of miR-133a induces type II collagen loss by directly targeting MMP9. Our findings also highlight miR-133a as a novel hopeful therapeutic target for IDD. LEVEL OF EVIDENCE 3.
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Geng S, Gu L, Ju F, Zhang H, Wang Y, Tang H, Bi Z, Yang C. MicroRNA-224 promotes the sensitivity of osteosarcoma cells to cisplatin by targeting Rac1. J Cell Mol Med 2016; 20:1611-9. [PMID: 27222381 PMCID: PMC4884199 DOI: 10.1111/jcmm.12852] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 02/22/2016] [Indexed: 12/19/2022] Open
Abstract
Osteosarcoma is the most common primary bone tumour in children and adolescents. Accumulating evidence has shown that microRNAs (miRNAs) participate in the development of almost all types of cancer. Here, we investigated the role of miR‐224 in the development and progression of osteosarcoma. We demonstrated that miR‐224 was down‐regulated in osteosarcoma cell lines and tissues. Lower miR‐224 levels were correlated with shorter survivalin osteosarcoma patients. Furthermore, overexpression of miR‐224 suppressed osteosarcoma cell proliferation, migration and invasion and contributed to the increased sensitivity of MG‐63 cells to cisplatin. We identified Rac1 as a direct target gene of miR‐224 in osteosarcoma. Rac1 expression was up‐regulated in the osteosarcoma cell lines and tissues, and there was an inverse correlation between Rac1 and miR‐224 expression in osteosarcoma tissues. Furthermore, rescuing Rac1 expression decreased the sensitivity of miR‐224‐overexpressing MG‐63 cells to cisplatin. We also demonstrated that ectopic expression of Rac1 promoted the proliferation, migration and invasion of miR‐224‐overexpressing MG‐63 cells. These data suggest that miR‐224 plays a tumour suppressor role in the development of osteosarcoma and is related to the sensitivity of osteosarcoma to cisplatin.
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Affiliation(s)
- Shuo Geng
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Prov., China
| | - Lina Gu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Prov., China
| | - Fang Ju
- Northern Institute for Cancer Research, Newcastle University, Sir James Spence Institute, RVI Hospital, UK
| | - Hepeng Zhang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Prov., China
| | - Yiwen Wang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Prov., China
| | - Han Tang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Prov., China
| | - ZhengGang Bi
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Prov., China
| | - Chenglin Yang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Prov., China
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MiR-138-5p promotes TNF-α-induced apoptosis in human intervertebral disc degeneration by targeting SIRT1 through PTEN/PI3K/Akt signaling. Exp Cell Res 2016; 345:199-205. [PMID: 27207584 DOI: 10.1016/j.yexcr.2016.05.011] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 04/08/2016] [Accepted: 05/15/2016] [Indexed: 12/22/2022]
Abstract
The role of apoptosis in the pathogenesis of intervertebral disc degeneration (IDD) remains enigmatic. Accumulating evidence has shown that the apoptotic machinery is regulated by miRNAs. The aim of this study was to evaluate the effect of miR-138-5p on apoptosis in human NP cells induced by TNF-α and to explore the mechanism of this process. The expression of miR-138-5p was determined in nucleus pulposus (NP) tissues from patients with IDD and controls using RT-qPCR, and we showed that miR-138-5p was significantly upregulated in degenerative NP tissues. Additionally, TNF-α-induced apoptosis was inhibited when using a miR-138-5p inhibitor in human NP cells, and silencing of miR-138-5p dramatically suppressed the expression of cleaved caspase-3. Moreover, bioinformatics target prediction identified SIRT1 as a putative target of miR-138-5p. Knockdown of miR-138-5p was shown to upregulate SIRT1 expression by direct targeting its 3'-UTR, an effect that was abolished by mutation of the miR-138-5p binding sites. Furthermore, inhibition of miR-138-5p downregulated PTEN protein expression and promoted activation of PI3K/AKT, and knockdown of either SIRT1 or the PI3K/Akt inhibitor (LY294002) abolished the effect of miR-138-5p on NP cell apoptosis. Together, these results indicate that miR-138-5p is a novel regulator of human NP cell apoptosis induced by TNF-α. The knockout of miR-138-5p expression protected human NP cells from apoptosis via the upregulation of SIRT1, which was possibly mediated via PTEN/PI3K/Akt signaling. These findings suggest that the miR-138-5p/SIRT1/PTEN/PI3K/Akt signaling pathway might represent a novel therapeutic target for the prevention of IDD.
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Matrix stiffness promotes cartilage endplate chondrocyte calcification in disc degeneration via miR-20a targeting ANKH expression. Sci Rep 2016; 6:25401. [PMID: 27142968 PMCID: PMC4855171 DOI: 10.1038/srep25401] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 04/18/2016] [Indexed: 01/22/2023] Open
Abstract
The mechanical environment is crucial for intervertebral disc degeneration (IDD). However, the mechanisms underlying the regulation of cartilage endplate (CEP) calcification by altered matrix stiffness remain unclear. In this study, we found that matrix stiffness of CEP was positively correlated with the degree of IDD, and stiff matrix, which mimicked the severe degeneration of CEP, promoted inorganic phosphate-induced calcification in CEP chondrocytes. Co-expression analysis of the miRNA and mRNA profiles showed that increasing stiffness resulted in up-regulation of miR-20a and down-regulation of decreased ankylosis protein homolog (ANKH) during inorganic phosphate-induced calcification in CEP chondrocytes. Through a dual luciferase reporter assay, we confirmed that miR-20a directly targets 3'-untranslated regions of ANKH. The inhibition of miR-20a attenuated the calcium deposition and calcification-related gene expression, whereas the overexpression of miR-20a enhanced calcification in CEP chondrocytes on stiff matrix. The rescue of ANKH expression restored the decreased pyrophosphate efflux and inhibited calcification. In clinical samples, the levels of ANKH expression were inversely associated with the degeneration degree of CEP. Thus, our findings demonstrate that the miR-20a/ANKH axis mediates the stiff matrix- promoted CEP calcification, suggesting that miR-20a and ANKH are potential targets in restraining the progression of IDD.
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Ji ML, Zhang XJ, Shi PL, Lu J, Wang SZ, Chang Q, Chen H, Wang C. Downregulation of microRNA-193a-3p is involved in invertebral disc degeneration by targeting MMP14. J Mol Med (Berl) 2016; 94:457-68. [PMID: 26620678 DOI: 10.1007/s00109-015-1371-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/08/2015] [Accepted: 11/17/2015] [Indexed: 01/06/2023]
Abstract
UNLABELLED Accumulating evidence suggests that microRNAs (miRNAs) play an important role in intervertebral disc degeneration (IDD), but the precise role of specific miRNAs involved in this disease remains elusive. The purpose of this study was to identify IDD-specific miRNAs, followed by functional validation of results. MiRNA expression profile was determined in nucleus pulposus (NP) tissues from patients with IDD and controls, employing Solexa sequencing and quantitative real-time PCR (qRT-PCR). Biological functions of differential expression miRNAs were further investigated in vitro and in vivo. Luciferase reporter assays and Western blotting were performed to determine miRNA targets. We identified 28 miRNAs that were differentially expressed in patients compared with controls. Following qRT-PCR confirmation, miR-193a-3p was significantly down-regulated in degenerative NP tissues. Moreover, its level was correlated with grade of disc degeneration. Through gain- and loss-of-function studies, miR-193a-3p was demonstrated to significantly promote type II collagen expression in NP cells. Knockdown of MMP14 induced effects on NP cells similar to those induced by miR-193a-3p. Bioinformatics target prediction identified MMP14 as a putative target of miR-193a-3p. Furthermore, luciferase reporter assays and Western blotting demonstrated that miR-193a-3p directly targets MMP14. MiR-193a-3p inhibited IDD in vitro and in vivo. The downregulation of miR-193a-3p induces the expression of MMP14, which promotes loss of type II collagen and thereby contributes to the development of human IDD. Our findings extend the role of miR-193a-3p in the pathogenesis of IDD and provide a potential novel therapeutic target for degenerative disc disease. KEY MESSAGES Intervertebral disc degeneration (ICC)-specific miRNA profile generated by next generation sequencing. Downregulation of miR-193a-3p promoted loss of type II collagen by directly targeting MMP14 in IDD. miR-193a-3p inhibited IDD in vitro and in vivo. miR-193a-3p may be a promising candidate for prevention of degenerative disc disease.
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Affiliation(s)
- Ming-Liang Ji
- Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Dingjiaqiao road 87, Nanjing, 210009, China
| | - Xue-Jun Zhang
- Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Dingjiaqiao road 87, Nanjing, 210009, China
| | - Pei-Liang Shi
- Key Laboratory of Model Animal for Disease Study of Ministry of Education, Model Animal Research Center, Collaborative Innovation Center of Genetics and Development, Nanjing University, Nanjing, China
| | - Jun Lu
- Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Dingjiaqiao road 87, Nanjing, 210009, China
| | - Shan-Zheng Wang
- Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Dingjiaqiao road 87, Nanjing, 210009, China
| | - Qing Chang
- Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Dingjiaqiao road 87, Nanjing, 210009, China
| | - Hui Chen
- Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Dingjiaqiao road 87, Nanjing, 210009, China
| | - Chen Wang
- Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Dingjiaqiao road 87, Nanjing, 210009, China.
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Abstract
Ankylosing spondylitis (AS) is a common and genetically heterozygous inflammatory rheumatic disease characterized by new bone formation, ankylosis and inflammation of hip, sacroiliac joints and spine. Until now, there is no method for early diagnosis of AS and the effective treatment available for AS patients remain largely undefined.We searched articles indexed in PubMed (MEDLINE) database using Medical Subject Heading (MeSH) or Title/Abstract words ("microRNA" and "ankylosing spondylitis") from inception up to November 2015.Genetic polymorphisms of miRNAs and their targets might alter the risk of AS development whereas certain miRNAs exhibit correlation with inflammatory index.Let-7i and miR-124 were upregulated whereas miR-130a was downregulated in circulating immune cells of AS patients. These deregulated miRNAs could modulate key immune cell functions, such as cytokine response and T-cell survival.miRNA deregulation is key to AS pathogenesis. However, clinical utilization of miRNAs for management of AS patients requires further support from future translational studies.
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Affiliation(s)
- Zheng Li
- From the Department of Orthopedics Surgery Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College (ZL, JS); State Key Laboratory of Digestive Disease, LKS Institute of Health Sciences and Department of Medicine & Therapeutics (SHW, WKKW); and Department of Anaesthesia and Intensive Care (MTVC), The Chinese University of Hong Kong, Hong Kong, China
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Ji ML, Lu J, Shi PL, Zhang XJ, Wang SZ, Chang Q, Chen H, Wang C. Dysregulated miR-98 Contributes to Extracellular Matrix Degradation by Targeting IL-6/STAT3 Signaling Pathway in Human Intervertebral Disc Degeneration. J Bone Miner Res 2016; 31:900-9. [PMID: 26587789 DOI: 10.1002/jbmr.2753] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 10/30/2015] [Accepted: 11/14/2015] [Indexed: 12/13/2022]
Abstract
Intervertebral disc degeneration (IDD) is associated with dysregulated expression of microRNAs (miRNAs). However, the precise molecular mechanisms underlying this disorder remain unclear. Therefore, we tested the hypothesis that miRNAs modulate IDD through effects on the IL-6/STAT3 signaling pathway, a potential regulator of IDD. The miRNA expression profile was determined in nucleus pulposus (NP) tissues from patients with IDD and controls, employing miRNA microarray and quantitative real-time PCR (RT-qPCR). Biological functions of differential expression miRNAs were further investigated using immunofluorescent staining. Luciferase reporter assays and Western blotting were performed to determine miRNA targets. We identified 41 miRNAs that were differentially expressed in patients compared with controls. Following RT-qPCR confirmation, miR-98 was significantly downregulated in degenerative NP tissues. Moreover, its level was inversely correlated with grade of disc degeneration. Through gain-of-function and loss-of-function studies, miR-98 was shown to significantly promote type II collagen expression in NP cells. Interleukin-6 (IL-6) was identified as a target of miR-98. Knockdown of IL-6 induced effects on NP cells similar to those induced by miR-98. In contrast, IL-6 treatment abrogated the effects induced by miR-98 upregulation. Moreover, miR-98 dramatically suppressed expression of STAT3 target gene, MMP2. IL-6 treatment antagonized this effect, whereas knockdown of IL-6 by IL-6 short hairpin RNA (shIL-6) induced inhibitory effects on the expression of p-STAT3 and its main target genes, similar to miR-98. The mRNA level of IL-6 was inversely correlated with that of miR-98 in degenerative NP tissues. These results suggest the downregulation of miR-98 could promote IDD through the IL-6/STAT3 signaling pathway. Our findings also highlight miR-98 as a novel hopeful therapeutic target for IDD.
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Affiliation(s)
- Ming-liang Ji
- The Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Jun Lu
- The Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Pei-liang Shi
- Key Laboratory of Model Animal for Disease Study of Ministry of Education, Model Animal Research Center, Collaborative Innovation Center of Genetics and Development, Nanjing University, Nanjing, China
| | - Xue-jun Zhang
- The Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Shan-zheng Wang
- The Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Qing Chang
- The Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Hui Chen
- The Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Chen Wang
- The Department of Orthopaedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
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Yu X, Li Z, Shen J, Chan MTV, Wu WKK. Role of microRNAs in primary central nervous system lymphomas. Cell Prolif 2016; 49:147-53. [PMID: 26990358 DOI: 10.1111/cpr.12243] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2015] [Accepted: 11/16/2015] [Indexed: 12/11/2022] Open
Abstract
Primary central nervous system lymphomas (PCNSL) are extranodal non-Hodgkin lymphomas arising exclusively inside the CNS, and account for about 3% of primary intracranial tumours. This tumour lacks systemic manifestations and prognosis of patients with PCNSL remains poor despite recent advancement of chemoradiotherapy. MicroRNAs are small non-coding RNAs that post-transcriptionally downregulate gene expression by binding to target mRNAs, inducing their degradation or translational repression. MicroRNAs play significant roles in almost all malignancy-related biological processes, including cell proliferation, differentiation, apoptosis and metabolism. Many deregulated miRNAs has been identified in PCNSL but their biological significance remains to be fully elucidated. In this review, we summarize current evidence regarding the pathogenic role of PCNSL-associated microRNAs and their potential applications for diagnosis and prognostication of this deadly disease.
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Affiliation(s)
- Xin Yu
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100042, China
| | - Zheng Li
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100042, China
| | - Jianxiong Shen
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100042, China
| | - Matthew T V Chan
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong, 999077, China
| | - William Ka Kei Wu
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong, 999077, China.,State Key Laboratory of Digestive Disease, LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, 999077, China
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Downregulation of miR-27b is Involved in Loss of Type II Collagen by Directly Targeting Matrix Metalloproteinase 13 (MMP13) in Human Intervertebral Disc Degeneration. Spine (Phila Pa 1976) 2016; 41:E116-23. [PMID: 26583473 DOI: 10.1097/brs.0000000000001139] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A microRNA (miRNA) study. OBJECTIVE The purpose of this study was to identify intervertebral disc degeneration (IDD)-specific miRNAs, followed by functional validation of results. SUMMARY OF BACKGROUND DATA IDD is the major contributor to back radicular pain, and the molecular mechanisms underlying this disease are not completely understood. Accumulating evidence suggests that miRNAs play an important role in IDD, but the role of specific miRNAs involved in this disease remains elusive. METHODS An initial screening of nucleus pulposus (NP) tissues, miRNA expression by miRNA microarray, was performed using samples from 10 patients with degenerative disc disease and 10 patients with lumbar fracture (as controls). Subsequently, differential expression was validated using quantitative reverse transcriptase PCR (qRT-PCR). The level of differentially expressed miRNAs in degenerative NP tissues was investigated, and then functional analysis of the miRNAs in regulating collagen II expression was carried out. Western blotting and luciferase reporter assays were also used to detect the target gene. RESULTS We identified 23 miRNAs that were differentially expressed (16 upregulated and 7 downregulated) in patients compared with controls. After qRT-PCR confirmation, miR-27b was significantly downregulated in degenerative NP tissues when compared with controls. Moreover, its level was correlated with grade of disc degeneration. Overexpression of miR-27b promoted type II collagen expression in NP cells. Bioinformatics target prediction identified matrix metalloproteinase 13 (MMP13) as a putative target of miR-27b. Futhermore, luciferase reporter assays demonstrated that miR-27b directly targets MMP13 and affects the protein expression of MMP13 in NP cells. Expression of MMP13 negatively correlated with miR-27b expression in degenerative NP tissues. CONCLUSION The downregulation of miR-27b induces type II collagen loss by directly targeting MMP13, leading to the development of IDD. Our study also underscores the potential of miR-27b as a novel therapeutic target in human IDD. LEVEL OF EVIDENCE 3.
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Li W, Wang P, Zhang Z, Wang W, Liu Y, Qi Q. MiR-184 Regulates Proliferation in Nucleus Pulposus Cells by Targeting GAS1. World Neurosurg 2016; 97:710-715.e1. [PMID: 26805687 DOI: 10.1016/j.wneu.2016.01.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 01/03/2016] [Accepted: 01/04/2016] [Indexed: 12/15/2022]
Abstract
OBJECTIVE The precise mechanism of nucleus pulposus proliferation in the degeneration of the intervertebral disk pathogenesis remains to be implicated. MicroRNAs (MiRNAs) are a class of 18-22 nucleotides, which are small, noncoding RNAs that inhibit protein translation by binding to the 3'-UTR of target gene. Recent studies have shown that miRNAs play a crucial role in various cell biologies such as cell proliferation, invasion, migration, and cell cycle. However, the role of miR-184 in nucleus pulposus proliferation is still unknown. METHOD qRT-PCR was performed to measure the expression of miR-184. CCK-8 assay, qRT-PCR, and Western blot were used to measure the functional role of miR-184 in nucleus pulposus (NP) cells. Western blot and Luciferase assays were done to find the miR-184 target gene. RESULT We demonstrated that expression of miR-184 was upregulated in degenerative NP tissues compared with that in the control NP tissues, and the expression of miR-184 was positively correlated with disk degeneration grade. We identified Growth Arrest Specific Gene 1 (GAS1) as a direct target gene of miR-184 in NP cells, and ectopic expression of miR-184 promoted NP cells proliferation. In addition, we found that GAS1 expression was downregulated in degenerative NP tissues compared with that in the control NP tissues and the GAS1 expression was inversely correlated with the grade of disk degeneration. Moreover, we demonstrated that miR-184 overexpression could induce AKT phosphorylation and ectopic expression of GAS1 decreased the miR-184 overexpressing NP cells proliferation. CONCLUSION These results demonstrated that miR-184 and the GAS1/Akt pathway may be a potential therapeutic target for intervertebral disc degeneration.
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Affiliation(s)
- Weiming Li
- Department of Orthopaedics, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Pei Wang
- Department of Orthopaedics, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Zheng Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Wantao Wang
- Department of Orthopaedics, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Yang Liu
- Department of Orthopaedics, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Quan Qi
- Department of Orthopaedics, The First Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China.
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miR-421 is a diagnostic and prognostic marker in patients with osteosarcoma. Tumour Biol 2016; 37:9001-7. [DOI: 10.1007/s13277-015-4578-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 12/02/2015] [Indexed: 12/23/2022] Open
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Yu X, Li Z. New insights into MicroRNAs involves in drug resistance in diffuse large B cell lymphoma. Am J Transl Res 2015; 7:2536-2542. [PMID: 26885255 PMCID: PMC4731655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 09/10/2015] [Indexed: 06/05/2023]
Abstract
Diffuse large B cell lymphoma (DLBCL) accounts for nearly 40% of non-Hodgkin's lymphoma cases. The combined chemotherapy of rituximab, cyclophosphamide, Adriamycin, vincristine, and prednisone (R-CHOP) is considered as the standard therapy for DLBCL; however, nearly half of the patients become refractory to the R-CHOP regimen. Early identification of drug resistance and therapeutic failures are crucial for the identification of high-risk patients. MicroRNAs (miRNAs) are a group of small and non-coding RNAs negatively regulating gene expression through binding to their target mRNAs. Recent studies demonstrated that miRNAs are involved in chemotherapeutic drug resistance in tumor. In our review, we summarize the current evidence on the role of miRNAs in the prediction and modulation of cellular response to rituximab, cyclophosphamide, Adriamycin, vincristine, and prednisone in DLBCL.
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Affiliation(s)
- Xin Yu
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100042, China
| | - Zheng Li
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100042, China
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Xin Y, Li Z, Chan MT, Wu WKK. Circulating epigenetic biomarkers in melanoma. Tumour Biol 2015; 37:1487-92. [DOI: 10.1007/s13277-015-4599-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 12/07/2015] [Indexed: 01/21/2023] Open
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128
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Yu X, Li Z, Chan MTV, Wu WKK. The roles of microRNAs in Wilms' tumors. Tumour Biol 2015; 37:1445-50. [PMID: 26634744 DOI: 10.1007/s13277-015-4514-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 11/25/2015] [Indexed: 12/12/2022] Open
Abstract
Wilms' tumor is the most common renal tumor in children in which diffusely anaplastic or unfavorable histology foreshadows poor prognosis. MicroRNAs are small, non-coding RNAs that negatively regulate gene expression at the posttranscriptional level. Accumulating evidence shows that microRNA dysregulation takes part in the pathogenesis of many renal diseases, such as chronic kidney diseases, polycystic kidney disease, renal fibrosis, and renal cancers. In Wilms' tumor, dysregulation of some key oncogenic or tumor-suppressing microRNAs, such as miR-17~92 cluster, miR-185, miR-204, and miR-483, has been documented. In this review, we will summarize current evidence on the role of dysregulated microRNAs in the development of Wilms' tumor.
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Affiliation(s)
- Xin Yu
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100042, China
| | - Zheng Li
- Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100042, China.
| | - Matthew T V Chan
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong, China
| | - William Ka Kei Wu
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong, China.,State Key Laboratory of Digestive Disease, LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
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129
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Fu X, Cui Y, Yang S, Xu Y, Zhang Z. MicroRNA-613 inhibited ovarian cancer cell proliferation and invasion by regulating KRAS. Tumour Biol 2015; 37:6477-83. [PMID: 26631045 DOI: 10.1007/s13277-015-4507-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 11/24/2015] [Indexed: 02/07/2023] Open
Abstract
MicroRNAs (miRNAs) play several important roles in carcinogenesis, and the dysregulation of miRNAs is associated with cancer progression. Little is known about the role of miR-613 in ovarian cancer. In the present study, we demonstrate that miR-613 expression is downregulated in human ovarian cancer cell lines and tissues. Additionally, miR-613 overexpression suppressed ovarian cancer cell proliferation, colony formation, and invasion. Furthermore, KRAS was identified as a target of miR-613. Reintroducing KRAS rescued the inhibitory effects exerted by miR-613 on ovarian cancer cell proliferation and invasion. Taken together, our findings suggest that miR-613 functions as a candidate tumor suppressor miRNA in ovarian cancer by directly targeting KRAS. To the best of our knowledge, this is the first study to show that miR-613 affects the proliferation and invasion of ovarian cancer.
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Affiliation(s)
- Xin Fu
- Department of Gynecology Cancer, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China.
| | - Yanfen Cui
- Department of Gynecology Cancer, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Shaobin Yang
- Department of Gynecology Cancer, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Yue Xu
- Department of Gynecology Cancer, National Clinical Research Center for Cancer, Tianjin Key Laboratory of Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, 300060, China
| | - Zicheng Zhang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Jinan, Shandong, China.
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130
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Serum microRNAs as potential noninvasive biomarkers for glioma. Tumour Biol 2015; 37:1407-10. [PMID: 26628296 DOI: 10.1007/s13277-015-4515-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 11/25/2015] [Indexed: 12/20/2022] Open
Abstract
Gliomas are derived from astroglial precursors or astrocytes, accounting for 40 % central nervous system tumors. MicroRNAs (miRNAs) are a class of endogenous, small (19- to 23-nucleotides) non-coding RNAs involved in cancer progression. Recent studies show that circulating miRNAs are associated with the clinicopathological features and prognosis of gliomas. Serum miRNAs may serve as novel biomarkers for gliomas diagnosis. This review explores the possibilities of using serum miRNAs as prognostic, diagnostic markers, and therapeutic targets in gliomas.
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131
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Huang X, Huang M, Kong L, Li Y. miR-372 suppresses tumour proliferation and invasion by targeting IGF2BP1 in renal cell carcinoma. Cell Prolif 2015; 48:593-9. [PMID: 26332146 DOI: 10.1111/cpr.12207] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 06/24/2015] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES MicroRNAs (miRNAs) are endogenous small non-coding RNAs that regulate proteins and mRNAs for degradation or translational suppression. Up to now, the role of miR-372 in renal cell carcinoma has remained unknown; in this study, we have aimed to reveal its functional importance in this tumour. MATERIALS AND METHODS qRT-PCR was performed to measure expression levels of miR-372 in renal cell carcinoma cell lines and tissues. CCK-8 and an invasion assay were performed to measure its functional role. Luciferase assays, qRT-PCR and western blotting were performed to discover miR-372's target gene. RESULTS We demonstrated that miRNA-372 was down-regulated in renal cell carcinoma cell lines and tissue specimens; its over-expression inhibited cell proliferation and invasion. Moreover, we showed that miRNA-372 repressed insulin-like growth factor 2 mRNA-binding protein 1 (IGF2BP1) expression by directly interacting with its putative binding site at the 3'-UTR. Furthermore, ectopic expression of IGF2BP1 significantly reversed suppression of cell proliferation and invasion caused by miR-372 over-expression. CONCLUSIONS Our data indicated that miR-372 seemed to function as a tumour suppressor in renal cell carcinoma progression by inhibiting the IGF2BP1 expression.
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Affiliation(s)
- Xuan Huang
- The Institute of Translational Medicine, Nanchang University, Jiangxi, 330031, China
| | - Mingjie Huang
- College of Bioscience and Engineering, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China
| | - Lingbao Kong
- College of Bioscience and Engineering, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China
| | - Yong Li
- The Institute of Translational Medicine, Nanchang University, Jiangxi, 330031, China
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132
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Gao Y, Xue Q, Wang D, Du M, Zhang Y, Gao S. miR-873 induces lung adenocarcinoma cell proliferation and migration by targeting SRCIN1. Am J Transl Res 2015; 7:2519-2526. [PMID: 26807196 PMCID: PMC4697728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 11/04/2015] [Indexed: 06/05/2023]
Abstract
microRNAs (miRNAs) are endogenously expressed, conserved and small noncoding RNA that regulate gene expression by the post-transcriptional level. In this study, we aim to examine the role of miR-873 in lung adenocarcinoma. We found that the expression of miR-873 was upregulated in four lung adenocarcinoma cell lines and tissues. In addition, the expression levels of SRCIN1 were inversely correlated with the expression levels of miR-873 in lung adenocarcinoma tissues. Furthermore, SRCIN1 was confirmed asthe direct target of miR-873 by luciferase reporter assay and Western blotting. Overexpression of miR-873 promoted the proliferation and migration of lung adenocarcinoma cells, while SRCIN1 upregulation inhibited their proliferation and migration. Restoration of SRCIN1 could significantly reverse the proliferation and migration promotion imposed by miR-873. In summary, this study reveals for the first time that miR-873 increase the lung adenocarcinoma cell proliferation and migration through directly inhibiting SRCIN1 expression.
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Affiliation(s)
- Yushun Gao
- Department of Thoracic Surgical Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100021, China
| | - Qi Xue
- Department of Thoracic Surgical Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100021, China
| | - Dali Wang
- Department of Thoracic Surgical Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100021, China
| | - Minjun Du
- Department of Thoracic Surgical Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100021, China
| | - Yanjiao Zhang
- Department of Thoracic Surgical Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100021, China
| | - Shugeng Gao
- Department of Thoracic Surgical Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100021, China
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133
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Shi C, Zhang Z. miR-761 inhibits tumor progression by targeting MSI1 in ovarian carcinoma. Tumour Biol 2015; 37:5437-43. [PMID: 26563371 DOI: 10.1007/s13277-015-4377-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2015] [Accepted: 11/03/2015] [Indexed: 12/22/2022] Open
Abstract
Increasing evidences have revealed that microRNAs regulate various biological processes. However, the roles of miR-761 have not been investigated in ovarian cancer. Here, we found that miR-761 expression was significantly lower in ovarian cancer tissues than in their paired noncancerous tissues. Further study revealed that miR-761 overexpression inhibited the ovarian cancer cell proliferation and invasion. Mechanistically, we demonstrated that the oncogenic properties of miR-761 in ovarian cancer were mediated in part by regulating MSI1 expression. miR-761 and MSI1 are inversely expressed in ovarian cancer tissues. In conclusion, we demonstrated that miR-761 repressed ovarian cancer proliferation and invasion by targeting MSI1.
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Affiliation(s)
- Can Shi
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China
| | - Zhenyu Zhang
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China.
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134
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Xie B, Zhang C, Kang K, Jiang S. miR-599 Inhibits Vascular Smooth Muscle Cells Proliferation and Migration by Targeting TGFB2. PLoS One 2015; 10:e0141512. [PMID: 26551255 PMCID: PMC4638351 DOI: 10.1371/journal.pone.0141512] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Accepted: 10/08/2015] [Indexed: 02/02/2023] Open
Abstract
Aberrant proliferation and migration of vascular smooth muscle cells (VSMCs) play a crucial role in the pathogenesis of cardiovascular diseases including coronary heart disease, restenosis and atherosclerosis. MicroRNAs are a class of small, non-coding and endogenous RNAs that play critical roles in VSMCs function. In this study, we showed that PDGF-bb, as a stimulant, promoted VSMCs proliferation and suppressed the expression of miR-599. Moreover, overexpression of miR-599 inhibited VSMCs proliferation and also suppressed the PCNA and ki-67 expression. In addition, we demonstrated that ectopic expression of miR-599 repressed the VSMCs migration. We also showed that miR-599 inhibited type I collagen, type V collagen and proteoglycan expression. Furthermore, we identified TGFb2 as a direct target gene of miR-599 in VSMCs. Overexpression of TGFb2 reversed miR-599-induced inhibition of VSMCs proliferation and type I collagen, type V collagen and proteoglycan expression. In conclusion, our findings suggest miR-599 plays a crucial role in controlling VSMCs proliferation and matrix gene expression by regulating TGFb2 expression.
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Affiliation(s)
- Baodong Xie
- Department of Cardiovascular Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Chunfeng Zhang
- Department of Cardiovascular Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Kai Kang
- Department of Cardiovascular Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - Shulin Jiang
- Department of Cardiovascular Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
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135
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Yu X, Li Z. MicroRNA expression and its implications for diagnosis and therapy of tongue squamous cell carcinoma. J Cell Mol Med 2015; 20:10-6. [PMID: 26498914 PMCID: PMC4717854 DOI: 10.1111/jcmm.12650] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 06/08/2015] [Indexed: 12/30/2022] Open
Abstract
Tongue squamous cell carcinoma (TSCC) is the most common type of oral squamous cell carcinomas and is well known for its high rate of lymph nodal metastasis. Despite the identification of many molecular mechanisms in TSCC, the number of deaths associated with TSCC increased during the past 5 years. MicroRNAs (miRNAs) are a family of small non-coding RNA molecules, which regulate gene expression by either translational inhibition or mRNA degradation. miRNAs have been proven to be key regulators of various biological and pathological processes including cell proliferation, development and tumourigenesis. Increasing evidence has demonstrated that the deregulated miRNAs are implicated in the diagnosis and treatment of TSCC. In this review, we summarized the expressions and roles of miRNAs in TSCC and comment on the potential roles of miRNAs in diagnosis, prognosis and treatment of this malignancy.
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Affiliation(s)
- Xin Yu
- Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zheng Li
- Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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136
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Yu X, Li Z, Chan MTV, Wu WKK. microRNA deregulation in keloids: an opportunity for clinical intervention? Cell Prolif 2015; 48:626-30. [PMID: 26486103 DOI: 10.1111/cpr.12225] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 08/08/2015] [Indexed: 12/12/2022] Open
Abstract
Keloids are defined as benign dermal scars invading adjacent healthy tissue, characterized by aberrant fibroblast dynamics and overproduction of extracellular matrix. However, the aetiology and molecular mechanism of keloid production remain poorly understood. Recent discoveries have shed new light on the involvement of a class of non-coding RNAs known as microRNAs (miRNA), in keloid formation. A number of miRNAs have differential expression in keloid tissues and keloid-derived fibroblasts. These miRNAs have been characterized as novel regulators of cellular processes pertinent to wound healing, including extracellular matrix deposition and fibroblast proliferation. Delineating the functional significance of miRNA deregulation may help us better understand pathogenesis of keloids, and promote development of miRNA-directed therapeutics against this condition.
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Affiliation(s)
- Xin Yu
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100042, China
| | - Zheng Li
- Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Matthew T V Chan
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong, 999077, China
| | - William K K Wu
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong, 999077, China.,State Key Laboratory of Digestive Disease, LKS Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, 999077, China
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137
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Lv C, Bai Z, Liu Z, Luo P, Zhang J. MicroRNA-495 suppresses human renal cell carcinoma malignancy by targeting SATB1. Am J Transl Res 2015; 7:1992-1999. [PMID: 26692942 PMCID: PMC4656775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 10/10/2015] [Indexed: 06/05/2023]
Abstract
Deregulated expression of miRNAs is related to progression and initiation of human cancers. Although miR-495 has identified in various tumors, its expression and function in renal cell carcinoma (RCC) is still unknown. In this study, we found that the expression of miR-495 was downregulated in RCC cell lines and tissues. Ectopic expression of miR-495 induced G0/G1 phase arrest and suppressed cell proliferation and migration in RCC cell lines. We further validated SATB1 was a direct target of miR-495 in RCC. In addition, re-expression of SATB1 reversed the miR-495-induced inhibition of cell proliferation and migration. These data suggest that miR-495 functions as a tumor suppressor and may be a promising therapeutic target in RCC in the future.
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Affiliation(s)
- Cai Lv
- Department of Urology, Haikou Municipal HospitalHaikou, Hainan, 570208, China
- Department of Urology, Renmin Hospital of Wuhan UniversityWuhan, Hubei, 430060, China
| | - Zhiming Bai
- Department of Urology, Haikou Municipal HospitalHaikou, Hainan, 570208, China
| | - Zhenxiang Liu
- Department of Urology, Haikou Municipal HospitalHaikou, Hainan, 570208, China
| | - Pengcheng Luo
- Department of Urology, Renmin Hospital of Wuhan UniversityWuhan, Hubei, 430060, China
| | - Jie Zhang
- Department of Urology, Renmin Hospital of Wuhan UniversityWuhan, Hubei, 430060, China
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138
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The role of miRNAs in the pheochromocytomas. Tumour Biol 2015; 37:4235-9. [DOI: 10.1007/s13277-015-4199-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 09/20/2015] [Indexed: 10/23/2022] Open
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139
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Shi X, Yan C, Liu B, Yang C, Nie X, Wang X, Zheng J, Wang Y, Zhu Y. miR-381 Regulates Neural Stem Cell Proliferation and Differentiation via Regulating Hes1 Expression. PLoS One 2015; 10:e0138973. [PMID: 26431046 PMCID: PMC4591969 DOI: 10.1371/journal.pone.0138973] [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: 08/13/2015] [Accepted: 09/08/2015] [Indexed: 11/18/2022] Open
Abstract
Neural stem cells are self-renewing, multipotent and undifferentiated precursors that retain the capacity for differentiation into both glial (astrocytes and oligodendrocytes) and neuronal lineages. Neural stem cells offer cell-based therapies for neurological disorders such as Alzheimer's disease, Parkinson's disease, Huntington's disease and spinal cord injuries. However, their cellular behavior is poorly understood. MicroRNAs (miRNAs) are a class of small noncoding RNAs involved in cell development, proliferation and differentiation through regulating gene expression at post-transcriptional level. The role of miR-381 in the development of neural stem cells remains unknown. In this study, we showed that overexpression of miR-381 promoted neural stem cells proliferation. It induced the neural stem cells differentiation to neurons and inhibited their differentiation to astrocytes. Furthermore, we identified HES1 as a direct target of miR-381 in neural stem cells. Moreover, re-expression of HES1 impaired miR-381-induced promotion of neural stem cells proliferation and induce neural stem cells differentiation to neurons. In conclusion, miR-381 played important role in neural stem cells proliferation and differentiation.
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Affiliation(s)
- Xiaodong Shi
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150081, PR China
| | - Chunhua Yan
- Department of Respiratory, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150081, PR China
| | - Baoquan Liu
- Department of anatomy, Harbin Medical University, Harbin, 150081, PR China
| | - Chunxiao Yang
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150081, PR China
| | - Xuedan Nie
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150081, PR China
| | - Xiaokun Wang
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150081, PR China
| | - Jiaolin Zheng
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150081, PR China
| | - Yue Wang
- Department of Occupational Health, College of Public Health, Harbin Medical University, Harbin, 150081, PR China
| | - Yulan Zhu
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150081, PR China
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140
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Wang C, Wang WJ, Yan YG, Xiang YX, Zhang J, Tang ZH, Jiang ZS. MicroRNAs: New players in intervertebral disc degeneration. Clin Chim Acta 2015; 450:333-41. [DOI: 10.1016/j.cca.2015.09.011] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 08/29/2015] [Accepted: 09/10/2015] [Indexed: 12/20/2022]
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141
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Chen B, Pan W, Lin X, Hu Z, Jin Y, Chen H, Ma G, Qiu Y, Chang L, Hua C, Zou Y, Gao Y, Ying H, Lv D. MicroRNA-346 functions as an oncogene in cutaneous squamous cell carcinoma. Tumour Biol 2015; 37:2765-71. [PMID: 26408183 DOI: 10.1007/s13277-015-4046-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 09/02/2015] [Indexed: 01/24/2023] Open
Abstract
Cutaneous squamous cell carcinoma (cSCC) is an epidermal keratinocyte-derived skin tumor, which is the second most common skin cancer in the general population. Recently, studies showed that microRNAs (miRNAs) played an important role in the development of cancer. In our study, we showed that the expression of SRCIN1 was lower in cSCC tissues than in the matched normal tissues. Moreover, there was significant inversed correlation between miR-346 and SRCIN1 in cSCC tissues. The luciferase reporter assay data showed that miR-346 can target the SRCIN1 message via the 3'-untranslated region (UTR) of SRCIN1. Overexpression of miR-346 inhibited the messenger RNA (mRNA) and protein expression of SRCIN1 in the A431 cells. In addition, ectopic expression of miR-346 promoted the A431 cell proliferation and migration. Meanwhile, SRCIN1 overexpression inhibited the A431 cell proliferation and migration. Rescue experiment has showed that SRCIN1 overexpression reduced the miR-346-induced A431 cell proliferation and migration. Herein, this study may provide miR-346 as a new therapeutic target for cSCC.
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Affiliation(s)
- Bin Chen
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China. .,Department of Plastic and Reconstructive Surgery, Liuzhou Worker's Hospital, The Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi, China.
| | - Wenyan Pan
- Department of Neurosurgery, Liuzhou Worker's Hospital, The Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi, China
| | - Xiaoxi Lin
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Zhenzhen Hu
- Department of Plastic Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yunbo Jin
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Hui Chen
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Gang Ma
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Yajing Qiu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Lei Chang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Chen Hua
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Yun Zou
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Yang Gao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Hanru Ying
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Dongze Lv
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China
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142
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miR-203 Acts as a Tumor Suppressor Gene in Osteosarcoma by Regulating RAB22A. PLoS One 2015; 10:e0132225. [PMID: 26382657 PMCID: PMC4575138 DOI: 10.1371/journal.pone.0132225] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 06/11/2015] [Indexed: 12/25/2022] Open
Abstract
microRNAs (miRNAs), small noncoding RNAs of 19–25 nt, play an important roles in the pathological processes of tumorigenesis. The object of this study was to study the expression and function of miR-203 and to found its target gene in osteosarcoma. In our study, we found the expression level of miR-203 was significantly downregulated in osteosarcoma cell lines and tissues. In addition, overexpression of miR-203 inhibited the osteosarcoma cell proliferation and migration and inhibited Mesenchymal-to-Epithelial reversion Transition (MErT). Moreover, we identified RAB22A as a direct target of miR-203 and RAB22A overexpression blocks the roles of miR-203 in osteosarcoma cell. Furthermore, we demonstrated that RAB22A expression was upregulated in human osteosarcoma cell lines and tissues. Take together, our results demonstrated that miR-203 act as a tumor suppressor miRNA through regulating RAB22A expression and suggested its involvement in osteosarcoma progression and carcinogenesis.
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143
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Sun L, Wang Q, Gao X, Shi D, Mi S, Han Q. MicroRNA-454 functions as an oncogene by regulating PTEN in uveal melanoma. FEBS Lett 2015; 589:2791-6. [PMID: 26296312 DOI: 10.1016/j.febslet.2015.08.007] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 08/04/2015] [Accepted: 08/05/2015] [Indexed: 12/25/2022]
Abstract
MicroRNAs (miRNAs) regulate gene expression by targeted repression of transcription and translation, and are involved in carcinogenesis. In this study, we demonstrated that the expression of miR-454 was up-regulated in uveal melanoma tissues compared to normal tissues. Ectopic expression of miR-454 resulted in significant promotion of cell proliferation, colony formation, invasion and induction of cell cycle in uveal melanoma cells. Furthermore, we identified PTEN as a direct target of miR-454. Our data revealed that ectopic expression of PTEN restored the effects of miR-454 on cell proliferation and invasion in uveal melanoma cells. These findings support an oncogene role of miR-454 in development of uveal melanoma.
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Affiliation(s)
- Lei Sun
- Department of Ophthalmology, The Fourth Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China
| | - Qiaoling Wang
- Department of Ophthalmology, The Second People's Hospital of Jinan, Jinan 250022, Shandong, China
| | - Xiangchun Gao
- Department of Ophthalmology, The Fourth Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China
| | - Dejing Shi
- Department of Ophthalmology, The Fourth Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China
| | - Shuyong Mi
- Department of Ophthalmology, The Fourth Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China
| | - Qing Han
- Department of Ophthalmology, The Fourth Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China.
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Ye L, Wang H, Liu B. miR-211 promotes non-small cell lung cancer proliferation by targeting SRCIN1. Tumour Biol 2015; 37:1151-7. [PMID: 26277787 DOI: 10.1007/s13277-015-3835-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 07/21/2015] [Indexed: 01/11/2023] Open
Abstract
MicroRNAs (miRNAs) are a class of small non-coding RNAs that, when dysregulated, are involved in the initiation and progression of various cancers, including lung cancer, in humans. In the current study, qRT-PCR was performed to measure miR-211 expression in human non-small cell lung cancer (NSCLC) cell lines and tissues. Cell proliferation, cell cycle, colony formation, and invasion were performed to detect the functional role of miR-211 in human NSCLC cell line. We used luciferase reporter assay to find the potential target of miR-211. We found that miR-211 expression was upregulated in human non-small cell lung cancer (NSCLC) cell lines and tissues. The overexpression of miR-211 enhanced NSCLC cell proliferation, colony formation, and invasion. SRC kinase signaling inhibitor 1 (SRCIN1) was identified as a direct target of miR-211. SRCIN1 silencing promoted cell proliferation, and SRCIN1 expression was downregulated in human NSCLC cell lines. Thus, miR-211 may function as an oncogenic miRNA in NSCLC, partly by regulating SRCIN1, and the modulation of miR-211 expression represents a potential strategy for the treatment of NSCLC patients.
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Affiliation(s)
- Leiguang Ye
- Department of Pulmonary Medicine, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China, 150040
| | - Hui Wang
- Department of Pulmonary Medicine, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China, 150040
| | - Baogang Liu
- Department of Pulmonary Medicine, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China, 150040.
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