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KRAS-related long noncoding RNAs in human cancers. Cancer Gene Ther 2022; 29:418-427. [PMID: 34489556 PMCID: PMC9113938 DOI: 10.1038/s41417-021-00381-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/29/2021] [Accepted: 08/11/2021] [Indexed: 02/08/2023]
Abstract
KRAS is one of the most widely prevalent proto-oncogenes in human cancers. The constitutively active KRAS oncoprotein contributes to both tumor onset and cancer development by promoting cell proliferation and anchorage-independent growth in a MAPK pathway-dependent manner. The expression of microRNAs (miRNAs) and the KRAS oncogene are known to be dysregulated in various cancers, while long noncoding RNAs (lncRNAs) can act as regulators of the miRNAs targeting KRAS oncogene in different cancers and have gradually become a focus of research in recent years. In this review article, we summarize recent advances in the research on lncRNAs that have sponging effects on KRAS-targeting miRNAs as crucial mediators of KRAS expression in different cell types and organs. A deeper understanding of lncRNA function in KRAS-driven cancers is of major fundamental importance and will provide a valuable clinical tool for the diagnosis, prognosis, and eventual treatment of cancers.
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2
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Wang L, Song H, Yang S. MicroRNA-206 has a bright application prospect in the diagnosis of cases with oral cancer. J Cell Mol Med 2021; 25:8169-8173. [PMID: 34418889 PMCID: PMC8419190 DOI: 10.1111/jcmm.16598] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/02/2021] [Accepted: 03/22/2021] [Indexed: 12/14/2022] Open
Abstract
Previous studies have shown that microRNA‐206 (miR‐206) exhibits anti‐tumour properties in various tumours. Nevertheless, diagnostic significance of miR‐206 in oral cancer is still poorly known. Our research was carried out to explore the performance of miR‐206 in the diagnosis of oral cancer. Quantitative real‐time polymerase chain reaction (qRT‐PCR) method was adopted to measure the level of miR‐206 in serum specimens from oral cancer cases and control individuals. Chi‐square test was performed to analyse the correlation between miR‐206 level and clinicopathological parameters of the cases. Receiver operating characteristic (ROC) curve was constituted to assess diagnostic accuracy of miR‐206 in oral cancer. Serum miR‐206 level in oral cancer patients was significantly lower than that in control individuals (P < .001). miR‐206 expression was obviously related to T classification (P = .033), TNM stage (P = .008) and lymph node metastasis (P = .028). The area under the curve (AUC) of the ROC curve was 0.846 (95% CI = 0.797‐0.896, P < .001) with a specificity of 72.7% and a sensitivity of 81.2%. It revealed that miR‐206 might be a non‐invasive indicator in differentiating oral cancer cases from control individuals. Down‐regulation of miR‐206 is related to the development of oral cancer. Serum miR‐206 might be an effective indicator for early detection of oral cancer.
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Affiliation(s)
- Lili Wang
- Department of Stomatology, Chinese PLA General Hospital, Beijing, China.,Department of Prosthodontics, Tianjin Stomatological Hospital, Tianjin, China
| | - Hongguang Song
- Department of Stomatology, Beijing DCN Orthopaedic Hospital, Beijing, China
| | - Shiming Yang
- Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital, Beijing, China
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3
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Ghosh RD, Pattatheyil A, Roychoudhury S. Functional Landscape of Dysregulated MicroRNAs in Oral Squamous Cell Carcinoma: Clinical Implications. Front Oncol 2020; 10:619. [PMID: 32547936 PMCID: PMC7274490 DOI: 10.3389/fonc.2020.00619] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 04/03/2020] [Indexed: 12/24/2022] Open
Abstract
MicroRNA (miRNA) dysregulation is associated with the pathogenesis of oral squamous cell carcinoma (OSCC), and its elucidation could potentially provide information on patient outcome. A growing body of translational research on miRNA biology is focusing on precision oncology, aiming to decode the miRNA regulatory network in the development and progression of cancer. Tissue-specific expression and stable presence in all body fluids are unique features of miRNAs, which could be potentially exploited in the clinical setting. Recent understanding of miRNA properties has led them to be useful, attractive, and potential tools either as biomarkers (distinct miRNA expression signature) for diagnosis and prognostic outcomes or as targets for novel therapeutic entities, enabling personalized treatment for OSCC. In this review, we discuss recent research on different aspects of alterations in miRNA profiles along with their clinical significance and strive to identify probable potential miRNA biomarkers for diagnosis and prognosis of OSCC. We also discuss the current understanding and scope of development of miRNA-based therapeutics against OSCC.
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Affiliation(s)
- Ruma Dey Ghosh
- Tata Translational Cancer Research Center, Tata Medical Center, Kolkata, India
| | - Arun Pattatheyil
- Department of Head and Neck Surgical Oncology, Tata Medical Center, Kolkata, India
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4
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Wang J, Liu H, Li M. Downregulation of miR-505 promotes cell proliferation, migration and invasion, and predicts poor prognosis in breast cancer. Oncol Lett 2019; 18:247-254. [PMID: 31289494 DOI: 10.3892/ol.2019.10334] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 04/15/2019] [Indexed: 12/17/2022] Open
Abstract
microRNAs are involved in the tumor progression of various cancer types. The present study aimed to determine the prognostic significance of microRNA-505 (miR-505) in patients with breast cancer and investigate the functional role of miR-505 in BCa progression. The expression of miR-505 was estimated using reverse transcription-quantitative polymerase chain reaction. Kaplan-Meier survival curves and Cox regression analysis were used to evaluate the prognostic value of miR-505 in patients with BCa. Cell experiments were performed to assess the biological function of miR-505 during BCa progression. A significant downregulated expression level of miR-505 was observed in BCa tissues and cells compared with the corresponding controls (P<0.001). The expression of miR-505 was significantly associated with distant metastasis status (P=0.013) and Tumor-Node-Metastasis staging (P=0.002). Furthermore, the overall survival time was significantly shorter for patients with low miR-505 expression compared with those with high miR-505 expression (P<0.001). In addition, miR-505 was identified as an independent prognostic factor for BCa. The results of cell experiments revealed that an overexpression of miR-505 could significantly inhibit BCa cell proliferation, migration and invasion, whereas a downregulation of miR-505 significantly enhanced BCa cell proliferation, migration and invasion (P<0.05). In summary, all data indicated that a low miR-505 expression level is associated with a poor prognosis for patients with BCa and promotes tumor cell proliferation, migration and invasion. Therefore, the aberrant expression of miR-505 may serve as a therapeutic target for BCa.
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Affiliation(s)
- Jian Wang
- Department of Laboratory Medicine, Yidu Central Hospital of Weifang, Weifang, Shandong 262500, P.R. China
| | - Haibo Liu
- Department of Laboratory Medicine, Yidu Central Hospital of Weifang, Weifang, Shandong 262500, P.R. China
| | - Minghong Li
- Department of Laboratory Medicine, Yidu Central Hospital of Weifang, Weifang, Shandong 262500, P.R. China
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Zhang J, Ma D, Liu H, Wang J, Fan J, Li X. MicroRNA-143 shows tumor suppressive effects through inhibition of oncogenic K-Ras in pituitary tumor. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:10969-10978. [PMID: 31966441 PMCID: PMC6965829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Accepted: 10/17/2017] [Indexed: 06/10/2023]
Abstract
MicroRNAs (miRNAs) are a class of small non-coding RNA molecules, about 21-25 nucleotides in length. Accumulating evidence demonstrated that dysregulation or dysfunction of miRNAs are involved in various diseases, including cancer. MiR-143, recently has been reported to function as an important tumor suppressor in prostate cancer, pancreatic ductal adenocarcinoma and other kinds of cancers, but rarely systematically studied in pituitary tumor. In the present study, we firstly found that miR-143 was significantly down-regulated in pituitary tumor tissues and cell lines (GH3 and MMQ). Then, subsequent studies revealed that miR-143 inhibits cell proliferation and promotes apoptosis in both GH3 and MMQ cells. In addition, K-Ras, one of the most important oncogenes involved in many kinds of cancers, was found to be suppressed by miR-143 in pituitary tumor. Furthermore, overexpression of K-Ras greatly reversed the suppressive effect of miR-143 on pituitary tumor cells. In summary, our study demonstrated that miR-143 functions as a tumor suppressor and directly targets K-Ras in human pituitary tumor.
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Affiliation(s)
- Jimin Zhang
- Department of Neurosurgery, Affiliated Hospital of Hebei University of EngineeringHandan 056002, Hebei Province, China
| | - Dongzhou Ma
- Department of Neurosurgery, Affiliated Hospital of Hebei University of EngineeringHandan 056002, Hebei Province, China
| | - Hui Liu
- Department of Neurosurgery, Jizhong Energy Fengfeng Group HospitalHandan 056200, Hebei Province, China
| | - Jingtao Wang
- Department of Neurosurgery, Affiliated Hospital of Hebei University of EngineeringHandan 056002, Hebei Province, China
| | - Jinbiao Fan
- Department of Neurosurgery, Affiliated Hospital of Hebei University of EngineeringHandan 056002, Hebei Province, China
| | - Xiushan Li
- Department of Neurosurgery, Affiliated Hospital of Hebei University of EngineeringHandan 056002, Hebei Province, China
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6
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Lubov J, Maschietto M, Ibrahim I, Mlynarek A, Hier M, Kowalski LP, Alaoui-Jamali MA, da Silva SD. Meta-analysis of microRNAs expression in head and neck cancer: uncovering association with outcome and mechanisms. Oncotarget 2017; 8:55511-55524. [PMID: 28903437 PMCID: PMC5589676 DOI: 10.18632/oncotarget.19224] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 06/05/2017] [Indexed: 11/25/2022] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is often diagnosed at advanced stages, incurring significant high mortality and morbidity. This review explored the risk stratification of miRNAs, and investigated the impact of miRNA networking in HNSCC prognostication. We performed a meta-analysis and a systematic literature search on online databases for papers published prior to December 1, 2016. The list of miRNAs was uploaded to MetacoreTM to construct a protein-protein interaction network, which was used to identify targets of the miRNAs and potential drugs. In addition, a representative network was further validated by immunohistochemistry in a cohort of 100 patients. We found 116 studies that included 8,194 subjects, in which the relationship between miRNA expression and prognosis of HNSCC were analyzed. Significant elevated expressions of 27 miRNAs and decreased expression of 26 miRNAs were associated with poor outcome. After excluding the studies causing heterogeneity, a fixed model was applied, which showed a statistically significant association between increased expression of miR-21 and poor survival (Pooled HR = 1.81,95% CI = 0.66-2.95, P < 0.005). We identified four networks affected by the miRNAs expression and enriched in genes related to metabolic processes and regulation of cell mitogenesis in response to extracellular stimuli. One network point out to 16 miRNAs directly or indirectly involved in the regulation of androgen-receptor (AR). Evaluation of AR protein expression in our cohort revealed that patients with upregulation of AR had poor survival rates (log-rank test, P < 0.005). This study showed that miRNAs have potential prognostic value to serve as screening tool for HNSCC during the follow-up. In addition, the implementation of a network-based analysis may reveal proteins with potential to be used as a biomarker.
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Affiliation(s)
- Joshua Lubov
- Department of Otolaryngology Head and Neck Surgery, Segal Cancer Centre and Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, Departments of Medicine and Oncology, McGill University, Montreal, QC, Canada
| | - Mariana Maschietto
- Brazilian Biosciences National Laboratory, National Center for Research in Energy and Materials, Campinas, SP, Brazil
| | - Iman Ibrahim
- Department of Otolaryngology Head and Neck Surgery, Segal Cancer Centre and Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, Departments of Medicine and Oncology, McGill University, Montreal, QC, Canada
| | - Alex Mlynarek
- Department of Otolaryngology Head and Neck Surgery, Segal Cancer Centre and Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, Departments of Medicine and Oncology, McGill University, Montreal, QC, Canada
| | - Michael Hier
- Department of Otolaryngology Head and Neck Surgery, Segal Cancer Centre and Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, Departments of Medicine and Oncology, McGill University, Montreal, QC, Canada
| | - Luiz Paulo Kowalski
- Department of Head and Neck Surgery and Otorhinolaryngology, AC Camargo Cancer Center, São Paulo, SP, Brazil
| | - Moulay A Alaoui-Jamali
- Department of Otolaryngology Head and Neck Surgery, Segal Cancer Centre and Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, Departments of Medicine and Oncology, McGill University, Montreal, QC, Canada
| | - Sabrina Daniela da Silva
- Department of Otolaryngology Head and Neck Surgery, Segal Cancer Centre and Lady Davis Institute for Medical Research, Sir Mortimer B. Davis-Jewish General Hospital, Departments of Medicine and Oncology, McGill University, Montreal, QC, Canada
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Koshizuka K, Hanazawa T, Fukumoto I, Kikkawa N, Matsushita R, Mataki H, Mizuno K, Okamoto Y, Seki N. Dual-receptor (EGFR and c-MET) inhibition by tumor-suppressive miR-1 and miR-206 in head and neck squamous cell carcinoma. J Hum Genet 2016; 62:113-121. [PMID: 27169691 DOI: 10.1038/jhg.2016.47] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 04/07/2016] [Accepted: 04/08/2016] [Indexed: 01/08/2023]
Abstract
Our studies of microRNA (miRNA) expression signatures have shown that microRNA-1 (miR-1) and microRNA-206 (miR-206) were downregulated in head and neck squamous cell carcinoma (HNSCC) clinical specimens. The seed sequences of these miRNAs are identical, suggesting that the identification of the molecular targets regulated by miR-1 and miR-206 will provide new insights into novel mechanisms of HNSCC pathogenesis. Our present data showed that restoration of miR-1 and miR-206 significantly inhibited HNSCC cells' aggressiveness. A combination of gene expression data and in silico analysis revealed that several pathways ('pathway in cancer', 'focal adhesion pathway', 'MAPK signaling pathway', 'regulation of actin cytoskeleton pathway' and 'ECM-receptor interaction pathway') were regulated by miR-1 and miR-206. Among them, we found that two growth factor receptors, epidermal growth factor receptor (EGFR) and hepatocyte growth factor receptor (c-MET), were directly regulated by both miR-1 and miR-206 in HNSCC cells. Also, downstream oncogenic signaling of these receptors was reduced by restoration of miR-1 or miR-206 expression. Moreover, overexpression of EGFR and c-MET was observed in HNSCC clinical specimens. The identification of targets modulated by tumor-suppressive miR-1 and miR-206 may lead to a better understanding of molecular pathogenesis of HNSCC.
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Affiliation(s)
- Keiichi Koshizuka
- Department of Functional Genomics, Chiba University Graduate School of Medicine, Chiba, Japan.,Department of Otorhinolaryngology/Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Toyoyuki Hanazawa
- Department of Otorhinolaryngology/Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Ichiro Fukumoto
- Department of Functional Genomics, Chiba University Graduate School of Medicine, Chiba, Japan.,Department of Otorhinolaryngology/Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Naoko Kikkawa
- Department of Otorhinolaryngology/Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Ryosuke Matsushita
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hiroko Mataki
- Department of Pulmonary Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Keiko Mizuno
- Department of Pulmonary Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Yoshitaka Okamoto
- Department of Otorhinolaryngology/Head and Neck Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Naohiko Seki
- Department of Functional Genomics, Chiba University Graduate School of Medicine, Chiba, Japan
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8
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Regulation of the T-box transcription factor Tbx3 by the tumour suppressor microRNA-206 in breast cancer. Br J Cancer 2016; 114:1125-34. [PMID: 27100732 PMCID: PMC4865973 DOI: 10.1038/bjc.2016.73] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 02/18/2016] [Accepted: 02/23/2016] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The Tbx3 transcription factor is over-expressed in breast cancer, where it has been implicated in proliferation, migration and regulation of the cancer stem cell population. The mechanisms that regulate Tbx3 expression in cancer have not been fully explored. In this study, we demonstrate that Tbx3 is repressed by the tumour suppressor miR-206 in breast cancer cells. METHODS Bioinformatics prediction programmes and luciferase reporter assays were used to demonstrate that miR-206 negatively regulates Tbx3. We examined the impact of miR-206 on Tbx3 expression in breast cancer cells using miR-206 mimic and inhibitor. Gene/protein expression was examined by quantitative reverse-transcription-PCR and immunoblotting. The effects of miR-206 and Tbx3 on apoptosis, proliferation, invasion and cancer stem cell population was investigated by cell-death detection, colony formation, 3D-Matrigel and tumorsphere assays. RESULTS In this study, we examined the regulation of Tbx3 by miR-206. We demonstrate that Tbx3 is directly repressed by miR-206, and that this repression of Tbx3 is necessary for miR-206 to inhibit breast tumour cell proliferation and invasion, and decrease the cancer stem cell population. Moreover, Tbx3 and miR-206 expression are inversely correlated in human breast cancer. Kaplan-Meier analysis indicates that patients exhibiting a combination of high Tbx3 and low miR-206 expression have a lower probability of survival when compared with patients with low Tbx3 and high miR-206 expression. These studies uncover a novel mechanism of Tbx3 regulation and identify a new target of the tumour suppressor miR-206. CONCLUSIONS The present study identified Tbx3 as a novel target of tumour suppressor miR-206 and characterised the miR-206/Tbx3 signalling pathway, which is involved in proliferation, invasion and maintenance of the cancer stem cell population in breast cancer cells. Our results suggest that restoration of miR-206 in Tbx3-positive breast cancer could be exploited for therapeutic benefit.
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Ren XL, He GY, Li XM, Men H, Yi LZ, Lu GF, Xin SN, Wu PX, Li YL, Liao WT, Ding YQ, Liang L. MicroRNA-206 functions as a tumor suppressor in colorectal cancer by targeting FMNL2. J Cancer Res Clin Oncol 2015; 142:581-92. [PMID: 26515696 DOI: 10.1007/s00432-015-2053-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 10/01/2015] [Indexed: 02/06/2023]
Abstract
BACKGROUND Colorectal cancer (CRC) is one of the most common cancers in the world. MicroRNAs play important roles in the progression of CRC. This study aimed to investigate the role of miR-206 and its novel mechanism in the invasion and metastasis of CRC. METHODOLOGY Real-time RT-PCR or Western blotting was used to detect the expressions of miR-206, FMNL2 and c-MET in CRC cell lines and tissues. Luciferase reporter assays were conducted to detect the associations between miR-206 and 3'UTRs of FMNL2 and c-MET. A series of loss-of-function and gain-of-function assays were performed to evaluate the effect of miR-206 on the proliferation, invasion and metastasis of CRC cells. RESULTS miR-206 was significantly down-regulated in CRC tissues and correlated closely with differentiation, lymphatic metastasis and serosal invasion. miR-206 suppressed CRC cell proliferation by arresting CRC cells in the G1/G0 phase and accelerating apoptosis. miR-206 also inhibited cell invasion and lung metastasis in CRC cells. Mechanically, FMNL2 and c-MET were identified as direct targets of miR-206. And FMNL2 rescued the suppression of miR-206 in the proliferation and invasion of CRC cells. CONCLUSIONS This study revealed functional and mechanistic links between miR-206 and oncogene FMNL2 and c-MET in the progression of CRC. miR-206 functioned as a tumor suppressor in the progression of CRC by targeting FMNL2 and c-MET. Restoration of miR-206 expression may represent a promising therapeutic approach for targeting malignant CRC.
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Affiliation(s)
- X L Ren
- Department of Pathology, Southern Medical University, Guangzhou City, 510515, Guangdong Province, People's Republic of China. .,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou City, 510515, Guangdong Province, People's Republic of China.
| | - G Y He
- Department of Pathology, Southern Medical University, Guangzhou City, 510515, Guangdong Province, People's Republic of China. .,Department of Pathology, Xinxiang Medical University, Xinxiang City, 453003, Henan Province, People's Republic of China.
| | - X M Li
- Department of Pathology, Southern Medical University, Guangzhou City, 510515, Guangdong Province, People's Republic of China. .,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou City, 510515, Guangdong Province, People's Republic of China.
| | - Hui Men
- Department of Pathology, Southern Medical University, Guangzhou City, 510515, Guangdong Province, People's Republic of China. .,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou City, 510515, Guangdong Province, People's Republic of China.
| | - L Z Yi
- Department of Gastroenterology, Leshan People's Hospital, Leshan City, 614000, Sichuan Province, People's Republic of China.
| | - G F Lu
- Department of Pathology, Southern Medical University, Guangzhou City, 510515, Guangdong Province, People's Republic of China. .,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou City, 510515, Guangdong Province, People's Republic of China.
| | - S N Xin
- Department of Pathology, Southern Medical University, Guangzhou City, 510515, Guangdong Province, People's Republic of China. .,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou City, 510515, Guangdong Province, People's Republic of China.
| | - P X Wu
- Department of Pathology, Southern Medical University, Guangzhou City, 510515, Guangdong Province, People's Republic of China. .,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou City, 510515, Guangdong Province, People's Republic of China.
| | - Y L Li
- Department of Pathology, Southern Medical University, Guangzhou City, 510515, Guangdong Province, People's Republic of China. .,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou City, 510515, Guangdong Province, People's Republic of China.
| | - W T Liao
- Department of Pathology, Southern Medical University, Guangzhou City, 510515, Guangdong Province, People's Republic of China. .,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou City, 510515, Guangdong Province, People's Republic of China.
| | - Y Q Ding
- Department of Pathology, Southern Medical University, Guangzhou City, 510515, Guangdong Province, People's Republic of China. .,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou City, 510515, Guangdong Province, People's Republic of China.
| | - L Liang
- Department of Pathology, Southern Medical University, Guangzhou City, 510515, Guangdong Province, People's Republic of China. .,Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou City, 510515, Guangdong Province, People's Republic of China.
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Zhang YJ, Xu F, Zhang YJ, Li HB, Han JC, Li L. miR-206 inhibits non small cell lung cancer cell proliferation and invasion by targeting SOX9. Int J Clin Exp Med 2015; 8:9107-9113. [PMID: 26309565 PMCID: PMC4538070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 06/04/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND MicroRNAs (miRNAs) are a class of small non-coding RNAs that have been suggested to play an essential role in tumorigenesis. miR-206 functions as a tumor suppressor in several cancers. However, its role in non small cell lung cancer (NSCLC) remains unclear. METHODS Expression levels of miR-206 in NSCLC tissues and cell lines were determined by quantitative real-time PCR (qRT-PCR). Then, we investigated the role of miR-206 on NSCLC cell proliferation, migration and invasion. Furthermore, luciferase reporter assay was performed to confirm the target gene of miR-206 and the results were validated in NSCLC cells. RESULTS In the present study, our results showed that miR-206 was decreased in NSCLC tissues compared with adjacent non-tumor tissues. Forced overexpression of miR-206 significantly inhibited cell proliferation, migration and invasion of NSCLC cells. SOX9 was found to be a target of miR-206. Furthermore, down-regulation of SOX9 by shRNA performed similar effects with overexpression of miR-206. CONCLUSIONS Our study suggested that miR-206 acts as tumor suppressor in NSCLC partially via targeting SOX9.
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Affiliation(s)
- Ya-Jun Zhang
- Department of Respiration Medicine, Huaihe Hospital of Henan University Kaifeng 475000, Henan Province, China
| | - Feng Xu
- Department of Respiration Medicine, Huaihe Hospital of Henan University Kaifeng 475000, Henan Province, China
| | - Yi-Jie Zhang
- Department of Respiration Medicine, Huaihe Hospital of Henan University Kaifeng 475000, Henan Province, China
| | - Hong-Bing Li
- Department of Respiration Medicine, Huaihe Hospital of Henan University Kaifeng 475000, Henan Province, China
| | - Ji-Chang Han
- Department of Respiration Medicine, Huaihe Hospital of Henan University Kaifeng 475000, Henan Province, China
| | - Lei Li
- Department of Respiration Medicine, Huaihe Hospital of Henan University Kaifeng 475000, Henan Province, China
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