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Ouyang Y, Yuan W, Qiu S. MicroRNA-153 functions as a tumor suppressor in gastric cancer via targeting Kruppel-like factor 5. Exp Ther Med 2018; 16:473-482. [PMID: 30112020 PMCID: PMC6090467 DOI: 10.3892/etm.2018.6226] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Accepted: 07/20/2017] [Indexed: 02/07/2023] Open
Abstract
Various microRNAs (miRs) have been demonstrated to serve important roles in gastric cancer (GC). miR-153 in particular has been reported to serve a suppressive role in GC; however, the underlying mechanism remains unclear. In the present study Reverse transcription-quantitative polymerase chain reaction and western blot analysis were used to examine the mRNA and protein expression of Kruppel-like factor 5. An MTT, wound healing and transwell assay were used to study cell proliferation, migration and invasion, respectively. In the present study, quantitative polymerase chain reaction data indicated that miR-153 was significantly downregulated in GC tissues compared with the adjacent non-tumor tissues. In addition, the reduced expression of miR-153 was significantly associated with GC aggressiveness and poor prognosis of patients. The expression of miR-153 was also reduced in GC cell lines, including KATO III, NCI-N87, SNU-16 and SNU-5, when compared with normal gastric epithelial GES-1 cells. Overexpression of miR-153 in the GC SNU-5 cells by miR-153 mimic transfection significantly inhibited the cell proliferation, migration and invasion. Furthermore, KLF5 was identified as a target gene of miR-153 in SNU-5 cells by bioinformatics prediction. It was observed that KLF5 was significantly upregulated in GC tissues and cell lines, and its expression was negatively regulated by miR-153 in SNU-5 cells. Overexpression of KLF5 impaired the suppressive effects of miR-153 on the proliferation, migration and invasion of SNU-5 cells. In conclusion, the present study demonstrated that miR-153 serves a tumor suppressive role in GC, at least partly, through directly targeting KLF5, thus highlighting the clinical significance of miR-153 in GC.
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Affiliation(s)
- Yanlan Ouyang
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Weijie Yuan
- Department of Gastrointestinal Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Sainan Qiu
- Department of Colorectal Anal Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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Jiang Y, Hou R, Li S, Li S, Dang G. MicroRNA-302 inhibits cell migration and invasion in cervical cancer by targeting DCUN1D1. Exp Ther Med 2018; 16:1000-1008. [PMID: 30116351 DOI: 10.3892/etm.2018.6223] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 10/05/2017] [Indexed: 12/11/2022] Open
Abstract
MicroRNA serve crucial roles in a variety of human cancer types. The miR-302-367 cluster has been reported to suppress the proliferation of cervical carcinoma cells through the novel target AKT1; however, the molecular mechanism of miR-302 in cervical cancer metastasis remains unclear. The present study aimed to investigate the clinical significance of miR-302-3p expression in cervical cancer, and to examine the regulatory mechanism of miR-302-3p in the malignant phenotypes of cervical cancer cells. The present data indicated that miR-302-3p was significantly downregulated in cervical cancer tissues compared with the level in adjacent non-tumor tissues, and low expression of miR-302-3p was significantly associated with node metastasis, advanced clinical stage, and poor prognosis in patients with cervical cancer. Restoration of miR-302-3p expression caused a significant reduction in cervical cancer cell migration and invasion. Defective in cullin neddylation 1 domain containing 1 (DCUN1D1) was identified as a novel target gene of miR-302-3p, and miR-302-3p negatively regulated the mRNA and protein expression of DCUN1D1 in cervical cancer HeLa cells. Additionally, overexpression of DCUN1D1 rescued the effects of miR-302-3p on the migration and invasion of cervical cancer cells. Furthermore, DCUN1D1 was upregulated in cervical cancer tissues compared with the levels in adjacent tissues, and its high expression was associated with node metastasis, advanced clinical stage, and shorter survival time in patients with cervical cancer. Notably, a negative correlation between miR-302-3p and DCUN1D1 expression in cervical cancer tissues was observed. Taken together, the present study suggests that miR-302-3p serves a suppressive role in cervical cancer metastasis, partly at least, via directly targeting DCUN1D1. Therefore, miR-302-3p/DCUN1D1 may be a potential therapeutic target for cervical cancer treatment.
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Affiliation(s)
- Yongjie Jiang
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Ruijie Hou
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Shaoping Li
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Shaoru Li
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Ge Dang
- Department of Operating Theatre, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
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Kim Y, Lee S, Choi S, Jang JY, Park T. Hierarchical structural component modeling of microRNA-mRNA integration analysis. BMC Bioinformatics 2018; 19:75. [PMID: 29745843 PMCID: PMC5998903 DOI: 10.1186/s12859-018-2070-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Identification of multi-markers is one of the most challenging issues in personalized medicine era. Nowadays, many different types of omics data are generated from the same subject. Although many methods endeavor to identify candidate markers, for each type of omics data, few or none can facilitate such identification. RESULTS It is well known that microRNAs affect phenotypes only indirectly, through regulating mRNA expression and/or protein translation. Toward addressing this issue, we suggest a hierarchical structured component analysis of microRNA-mRNA integration ("HisCoM-mimi") model that accounts for this biological relationship, to efficiently study and identify such integrated markers. In simulation studies, HisCoM-mimi showed the better performance than the other three methods. Also, in real data analysis, HisCoM-mimi successfully identified more gives more informative miRNA-mRNA integration sets relationships for pancreatic ductal adenocarcinoma (PDAC) diagnosis, compared to the other methods. CONCLUSION As exemplified by an application to pancreatic cancer data, our proposed model effectively identified integrated miRNA/target mRNA pairs as markers for early diagnosis, providing a much broader biological interpretation.
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Affiliation(s)
- Yongkang Kim
- Department of Statistics, Seoul National University, Seoul, Korea
| | - Sungyoung Lee
- Interdisciplinary program in Bioinformatics, Seoul National University, Seoul, Korea
| | - Sungkyoung Choi
- Interdisciplinary program in Bioinformatics, Seoul National University, Seoul, Korea
| | - Jin-Young Jang
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Taesung Park
- Department of Statistics, Seoul National University, Seoul, Korea.
- Interdisciplinary program in Bioinformatics, Seoul National University, Seoul, Korea.
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54
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Ghodousi ES, Rahgozar S. MicroRNA-326 and microRNA-200c: Two novel biomarkers for diagnosis and prognosis of pediatric acute lymphoblastic leukemia. J Cell Biochem 2018; 119:6024-6032. [PMID: 29630744 DOI: 10.1002/jcb.26800] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 02/21/2018] [Indexed: 12/12/2022]
Abstract
Multidrug resistance (MDR) is considered as the major obstacle for treating pediatric acute lymphoblastic leukemia (ALL). MicroRNAs (miRNAs) are small non coding RNAs which may potentially regulate response to chemotherapy. In this study, total RNA was isolated from bone marrow samples of 46 children with de novo ALL and 16 controls. Quantitative reverse transcriptase polymerase chain reaction was used to investigate the expression profile of the predicted miRNAs; miR-326 and miR-200c, and their predicted targets ABCA2, and ABCA3 transporters. The presence of minimal residual disease was studied using PCR-SSCP (single-strand conformation polymorphism) 1 year after treatment. The association between the miRNA expression and drug resistance was analyzed statistically. Results showed a significant down-regulation of both miR-326 and miR-200c expressions in ALL patients compared with non-cancer controls (P = 0.0002, AUC = 0.813 and P = 0.035, AUC = 0.79, respectively). A considerable negative association between miR-326 expression and MDR was identified which could raise the risk of chemoresistance by 4.8- fold. The expression profiles of miR-326 and ABCA2 transporter were inversely correlated. Data revealed, a novel diagnostic role for miR-326 and miR-200c as potential biomarkers of pediatric ALL. Down-regulation of miR-326 was introduced, for the first time, as a prognostic factor for drug resistance in childhood ALL. To the best of our knowledge, this is the first time that ABCA2 transporter is proposed as a target gene for miR-326, through which it can exert its impact on drug resistance. These data may provide novel approaches to new therapeutics and diagnostics.
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Affiliation(s)
- Elaheh S Ghodousi
- Department of Biology, Faculty of Science, University of Isfahan, Isfahan, Iran
| | - Soheila Rahgozar
- Department of Biology, Faculty of Science, University of Isfahan, Isfahan, Iran
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55
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Li S, Luo C, Zhou J, Zhang Y. MicroRNA-34a directly targets high-mobility group box 1 and inhibits the cancer cell proliferation, migration and invasion in cutaneous squamous cell carcinoma. Exp Ther Med 2017; 14:5611-5618. [PMID: 29285100 DOI: 10.3892/etm.2017.5245] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 07/11/2017] [Indexed: 12/13/2022] Open
Abstract
Cutaneous squamous cell carcinoma (CSCC) is the second most common type of skin cancer with increasing incidence. In recent years, several microRNAs (miRs) have been demonstrated to serve an oncogenic or tumor suppressive role in CSCC. However, the exact role of miR-34a in CSCC and the underlying regulatory mechanism remain unclear. The present study aimed to investigate the regulatory mechanism of miR-34a in the malignant phenotypes of CSCC cells using MTT assay, wound healing assay and transwell assay. It was observed that miR-34a was significantly downregulated in CSCC tissues and cell lines, and low miR-34a expression was associated with the aggressive progression of CSCC. Restoration of miR-34a significantly suppressed the proliferation, migration and invasion of CSCC SCL-1 cells. High-mobility group box 1 (HMGB1) was then identified as a target gene of miR-34a in SCL-1 cells using bioinformatics prediction. The expression of HMGB1 was significantly upregulated in the CSCC tissues and cell lines. Furthermore, the protein expression of HMGB1 was negatively regulated by miR-34a in SCL-1 cells, while overexpression of HMGB1 impaired the inhibitory effects of miR-34a on SCL-1 cells. These findings suggest that miR-34a represses the malignant phenotypes of CSCC cells, at least partly, via the inhibition of HMGB1. Therefore, miR-34a may be used as a promising therapeutic candidate for CSCC.
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Affiliation(s)
- Shanshan Li
- Department of Plastic and Reconstructive Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100144, P.R. China
| | - Chengqun Luo
- Department of Burns, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Jun Zhou
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Yong Zhang
- Department of Cosmetic and Plastic Surgery, The Third People's Hospital of Huaihua, Huaihua, Hunan 418000, P.R. China
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56
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Yang P, Bu P, Li C. miR-124 inhibits proliferation, migration and invasion of malignant melanoma cells via targeting versican. Exp Ther Med 2017; 14:3555-3562. [PMID: 29042947 PMCID: PMC5639313 DOI: 10.3892/etm.2017.4998] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Accepted: 07/20/2017] [Indexed: 11/06/2022] Open
Abstract
MicroRNA (miR)-124 has been implicated in malignant melanoma (MM). However, the detailed regulatory mechanism of miR-124 in the malignant phenotypes of MM cells has remained largely elusive. A total of 68 pairs of MM tissues and adjacent tissues were collected. Reverse-transcription quantitative polymerase chain reaction was used to examine the mRNA expression of versican as well as the expression of miR-124, and the protein expression of versican was assessed by western blot analysis. MTT, wound healing and Transwell assays were used to determine cell proliferation, migration and invasion, respectively. A bioinformatics analysis and a luciferase reporter assay were used to confirm the targeting association between miR-124 and versican. miR-124 was significantly downregulated in MM tissues compared with that in adjacent non-tumorous tissues, and decreased expression of miR-124 was associated with increased tumor thickness, advanced clinical stage and node metastasis of MM. Furthermore, the expression levels of miR-124 were also reduced in MM cell lines compared with normal human skin HACAT cells. Forced overexpression of miR-124 caused a significant reduction in the proliferation, migration and invasion of MM A375 cells. Versican was significantly upregulated in MM tissues and cell lines, and was identified as a novel target of miR-124 in A375 cells using a luciferase reporter gene assay, and miR-124 was revealed to negatively regulate the protein expression of versican in A375 cells. Overexpression of versican impaired the suppressive effects of miR-124 on the proliferation, migration and invasion of A375 cells. In conclusion, miR-124 inhibited the malignant phenotypes of MM cells at least partly via inhibition of versican. Therefore, the miR-124/versican axis may be used as a promising therapeutic target for inhibiting MM growth and metastasis.
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Affiliation(s)
- Ping Yang
- Department of Burn Surgery, Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Pingyuan Bu
- Department of Burn Surgery, Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Chengyuan Li
- Department of Hematology, Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
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57
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Li H, Liu G, Pan K, Miao X, Xie Y. Methylation-induced downregulation and tumor suppressive role of microRNA-29b in gastric cancer through targeting LASP1. Oncotarget 2017; 8:95880-95895. [PMID: 29221174 PMCID: PMC5707068 DOI: 10.18632/oncotarget.21431] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 08/21/2017] [Indexed: 01/09/2023] Open
Abstract
MicroRNAs (miRs) have been demonstrated to play promoting or tumor suppressive roles in various human cancers, but the regulatory mechanism of miR-29b underlying gastric cancer development and progression still remains largely unclear. In the present study, we found that miR-29b was significantly downregulated in gastric cancer tissues and cell lines. Low expression of miR-29b was significantly associated with DNA methylation, and treatment with DNA methyltransferase inhibitor 5-Aza-20-deoxycytidine upregulated miR-29b in gastric cancer cells. In addition, both reduced miR-29b expression and miR-29b methylation were associated with disease progression and poor prognosis in gastric cancer. Restoration of miR-29b caused a reduction in gastric cancer cell proliferation, migration, and invasion, and inhibited tumor growth in vivo. LASP1 was then identified as a target gene of miR-29b in gastric cancer cells. Moreover, upregulation of LASP1 was significantly associated with gastric cancer progression and poor prognosis. Knockdown of LASP1 also suppressed the proliferation, migration, and invasion of gastric cancer cells. Moreover, overexpression of LASP1 impaired the suppressive effects of miR-29b on the malignant phenotypes of gastric cancer cells, suggesting that miR-29b may inhibit gastric cancer growth and metastasis via targeting LASP1. According to these data, miR-29b may be used as a potential therapeutic candidate for gastric cancer.
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Affiliation(s)
- Hui Li
- Department of Anesthesia, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Guoqing Liu
- Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ke Pan
- Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiongying Miao
- Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yong Xie
- Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
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58
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MicroRNA-363 inhibits ovarian cancer progression by inhibiting NOB1. Oncotarget 2017; 8:101649-101658. [PMID: 29254193 PMCID: PMC5731903 DOI: 10.18632/oncotarget.21417] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 09/04/2017] [Indexed: 01/13/2023] Open
Abstract
In this study, we investigated the role of microRNA-363(miR-363) in ovarian cancer (OC) progression. MiR-363expression was downregulated in OC patient tissues and four OC cell lines (SKOV3, A2780, OVCAR and HO-8910). Low miR-363 levels were associated with advanced stage, lymph node metastasis, and poor prognosis in OC. MiR-363 overexpression decreased growth, colony formation, migration and invasiveness of SKOV3 cells. In addition, miR-363 overexpression in SKOV3 cells also decreased xenograft tumor size and weight in nude mice. Bioinformatics and dual luciferase reporter assays revealed that miR-363 suppresses expression of NIN1/RPN12 binding protein 1 homolog (NOB1) by binding to the 3’-UTR of its transcript. NOB1 expression inversely correlated with miR-363 levels in OC tissues. Thus miR-363 appears to play a tumor suppressor role in OC by inhibiting NOB1.
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59
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Dai H, Hou K, Cai Z, Zhou Q, Zhu S. Low-level miR-646 in colorectal cancer inhibits cell proliferation and migration by targeting NOB1 expression. Oncol Lett 2017; 14:6708-6714. [PMID: 29391877 PMCID: PMC5770607 DOI: 10.3892/ol.2017.7032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 08/03/2017] [Indexed: 12/16/2022] Open
Abstract
Aberrant expression of microRNA (miRNA) is important in the progression of various human cancers, however further investigation is required in order to fully elucidate mechanisms of and validate actions of endogenous non-coding RNAs. The present study demonstrated that the expression of miR-646 was downregulated in colorectal cancer tissues and cell lines. Notably, it was observed that miR-646, a tumor suppressor, inhibited colorectal cancer cell progression through directly targeting Nin one binding protein (NOB1) expression, which possesses anti-tumor properties in colorectal cancer. Furthermore, knockdown of NOB1 expression was responsible for the tumor-suppressive effect of miR-646. The findings suggest that miR-646 may act as a therapeutic target for the treatment of colorectal cancer.
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Affiliation(s)
- Huajia Dai
- The First Department of General Surgery, Shidong Hospital, Shanghai 200438, P.R. China
| | - Kezhu Hou
- The First Department of General Surgery, Shidong Hospital, Shanghai 200438, P.R. China
| | - Zujin Cai
- The First Department of General Surgery, Shidong Hospital, Shanghai 200438, P.R. China
| | - Qi Zhou
- The First Department of General Surgery, Shidong Hospital, Shanghai 200438, P.R. China
| | - Song Zhu
- The First Department of General Surgery, Shidong Hospital, Shanghai 200438, P.R. China
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60
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Kong R, Liu W, Guo Y, Feng J, Cheng C, Zhang X, Ma Y, Li S, Jiang J, Zhang J, Qiao Z, Qin J, Lu T, He X. Inhibition of NOB1 by microRNA-330-5p overexpression represses cell growth of non-small cell lung cancer. Oncol Rep 2017; 38:2572-2580. [PMID: 28849232 DOI: 10.3892/or.2017.5927] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 07/24/2017] [Indexed: 11/06/2022] Open
Abstract
MicroRNAs (miRNAs) play critical roles in the development and progression of various cancers, including non-small-cell lung cancer (NSCLC). Studies have suggested that miR-330-5p is involved in the progression of several cancers. However, the role of miR-330-5p in NSCLC remains unclear. We investigated the effect on and mechanism of miR-330-5p in the progression of NSCLC. We found that miR-330-5p was significantly downregulated in NSCLC tissues and cell lines as detected by real-time quantitative polymerase chain reaction (RT-qPCR). The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), bromodeoxyuridine (BrdU), colony formation and cell cycle assays showed that overexpression of miR-330-5p markedly inhibited cell growth. Annexin V-FITC/PI and caspase-3 activity assays showed that overexpression of miR-330-5p significantly promoted cell apoptosis of NSCLC cells. Bioinformatics analysis and dual-luciferase reporter assays confirmed NIN/RPN12 binding protein 1 (NOB1) as a target gene of miR-330-5p. RT-qPCR and Western blot analysis showed that overexpression of miR-330-5p inhibited the expression of NOB1 as well as cyclin D1 and cyclin-dependent kinase 4 in NSCLC cells. Moreover, overexpression of NOB1 markedly reversed the miR‑330-5p-mediated inhibitory effect on NSCLC cell growth. Correlation analysis showed that miR‑330-5p expression was inversely correlated with NOB1 mRNA expression in NSCLC tissues. Taken together, our results indicate that miR-330-5p inhibits NSCLC cell growth through downregulation of NOB1 expression. Our study suggests that miR-330-5p may serve as a potential therapeutic target for the treatment of NSCLC.
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Affiliation(s)
- Ranran Kong
- Department of Thoracic Surgery, The Second Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Wei Liu
- Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, P.R. China
| | - Yurui Guo
- Department of Anesthesia, The Second Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Jie Feng
- Department of Nephrology, The First Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Chuantao Cheng
- Department of General Surgery, The Second Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Xinwu Zhang
- Department of General Surgery, The Second Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Yuefeng Ma
- Department of Thoracic Surgery, The Second Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Shaomin Li
- Department of Thoracic Surgery, The Second Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Jiantao Jiang
- Department of Thoracic Surgery, The Second Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Jin Zhang
- Department of Thoracic Surgery, The Second Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Zhe Qiao
- Department of Thoracic Surgery, The Second Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Jie Qin
- Second Department of Orthopedics, The Second Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Teng Lu
- Second Department of Orthopedics, The Second Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Xijing He
- Second Department of Orthopedics, The Second Affiliated Hospital of Medical School, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
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Xu AJ, Fu LN, Wu HX, Yao XL, Meng R. MicroRNA-744 inhibits tumor cell proliferation and invasion of gastric cancer via targeting brain-derived neurotrophic factor. Mol Med Rep 2017; 16:5055-5061. [DOI: 10.3892/mmr.2017.7167] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 07/28/2017] [Indexed: 11/06/2022] Open
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Liang S, Zhang N, Deng Y, Chen L, Zhang Y, Zheng Z, Luo W, Lv Z, Li S, Xu T. miR-663b promotes tumor cell proliferation, migration and invasion in nasopharyngeal carcinoma through targeting TUSC2. Exp Ther Med 2017; 14:1095-1103. [PMID: 28781619 PMCID: PMC5526187 DOI: 10.3892/etm.2017.4608] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 05/31/2017] [Indexed: 12/13/2022] Open
Abstract
The authors' previous study revealed that the serum levels of microRNA (miR)-663b are significantly increased in patients with nasopharyngeal carcinoma (NPC), and are associated with NPC progression and poor prognosis. However, the molecular mechanism of underlying NPC growth and metastasis remains unclear. In the present study, quantitative polymerase chain reaction and western blot analyses were performed to examine changes to mRNA and protein expression, respectively. MTT, wound healing and Transwell assays were used to examine cell proliferation, migration and invasion, respectively. Luciferase reporter gene assays were performed to identify target genes of miR-663b. It was demonstrated that miR-663b was significantly upregulated in NPC tissue compared with non-tumor nasopharyngeal epithelial tissue samples. Furthermore, miR-663b expression gradually increased with advancing stages of NPC, with the highest expression being observed in the latest stage IV. The increased expression of miR-663b was associated with advanced clinical stage and lymph node metastasis. In addition, miR-663b expression was increased in NPC cell lines compared with normal nasopharyngeal epithelial NP69 cells. Knockdown of miR-663b resulted in a significant reduction in the proliferation, migration and invasion of NPC CNE1 cells. Tumor suppressor candidate 2 (TUSC2) was identified as a novel target gene of miR-663b. It was further demonstrated that TUSC2 was significantly downregulated in NPC tissue samples and cell lines. miR-663b negatively regulated the expression of TUSC2 at the post-transcriptional level in CNE1 cells. Additionally, inhibition of TUSC2 expression attenuated the suppressive effects of miR-663b downregulation on the proliferation, migration and invasion of CNE1 cells. To the best of our knowledge, this is the first study to demonstrate that miR-663b, which is upregulated in NPC, promotes the proliferation, migration and invasion of NPC cells, partially through the inhibition of TUSC2 expression. Therefore, it is suggested that miR-663b is a promising therapeutic target for the treatment of patients with NPC.
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Affiliation(s)
- Shaoqiang Liang
- Department of Radiotherapy, Tumor Hospital of First People's Hospital of Foshan, Foshan, Guangdong 528041, P.R. China
| | - Ning Zhang
- Department of Radiotherapy, Tumor Hospital of First People's Hospital of Foshan, Foshan, Guangdong 528041, P.R. China
| | - Yanming Deng
- Department of Radiotherapy, Tumor Hospital of First People's Hospital of Foshan, Foshan, Guangdong 528041, P.R. China
| | - Lusi Chen
- Department of Radiotherapy, Tumor Hospital of First People's Hospital of Foshan, Foshan, Guangdong 528041, P.R. China
| | - Yang Zhang
- Department of Radiotherapy, Tumor Hospital of First People's Hospital of Foshan, Foshan, Guangdong 528041, P.R. China
| | - Zhenhe Zheng
- Department of Radiotherapy, Tumor Hospital of First People's Hospital of Foshan, Foshan, Guangdong 528041, P.R. China
| | - Weijun Luo
- Department of Radiotherapy, Tumor Hospital of First People's Hospital of Foshan, Foshan, Guangdong 528041, P.R. China
| | - Zhiqian Lv
- Department of Radiotherapy, Tumor Hospital of First People's Hospital of Foshan, Foshan, Guangdong 528041, P.R. China
| | - Shaoen Li
- Department of Radiotherapy, Tumor Hospital of First People's Hospital of Foshan, Foshan, Guangdong 528041, P.R. China
| | - Tao Xu
- Department of Radiotherapy, Tumor Hospital of First People's Hospital of Foshan, Foshan, Guangdong 528041, P.R. China
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Zhang J, Xu K, Shi L, Zhang L, Zhao Z, Xu H, Liang F, Li H, Zhao Y, Xu X, Tian Y. Overexpression of MicroRNA-216a Suppresses Proliferation, Migration, and Invasion of Glioma Cells by Targeting Leucine-Rich Repeat-Containing G Protein-Coupled Receptor 5. Oncol Res 2017; 25:1317-1327. [PMID: 28256193 PMCID: PMC7840945 DOI: 10.3727/096504017x14874323871217] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Increasing studies have suggested that microRNAs (miRNAs) are involved in the development of gliomas. MicroRNA-216a has been reported to be a tumor-associated miRNA in many types of cancer, either as an oncogene or as a tumor suppressor. However, little is known about the function of miR-216a in gliomas. The present study was designed to explore the potential role of miR-216a in gliomas. We found that miR-216a was significantly decreased in glioma tissues and cell lines. Overexpression of miR-216a significantly suppressed the proliferation, migration, and invasion of glioma cells. Leucine-rich repeat-containing G protein-coupled receptor 5 (LGR5) was identified as a target gene of miR-216a in glioma cells by bioinformatics analysis, dual-luciferase reporter assay, real-time quantitative polymerase chain reaction, and Western blot analysis. Moreover, miR-216a overexpression inhibited the Wnt/β-catenin signaling pathway. The restoration of LGR5 expression markedly reversed the antitumor effect of miR-216a in glioma cells. Taken together, these findings suggest a tumor suppressor role for miR-216a in gliomas, which inhibits glioma cell proliferation, migration, and invasion by targeting LGR5. Our study suggests that miR-216a may serve as a potential therapeutic target for future glioma treatment.
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