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Okumura T, Fujii T, Terabayashi K, Kojima T, Takeda S, Kashiwada T, Toriyama K, Hijioka S, Miyazaki T, Yamamoto M, Tanabe S, Shirakawa Y, Furukawa M, Honma Y, Hoshino I, Nabeya Y, Yamaguchi H, Uemoto S, Shimada Y, Matsubara H, Ozawa S, Makuuchi H, Imamura M. MicroRNAs associated with postoperative outcomes in patients with limited stage neuroendocrine carcinoma of the esophagus. Oncol Lett 2023; 26:276. [PMID: 37274462 PMCID: PMC10236049 DOI: 10.3892/ol.2023.13862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 04/14/2023] [Indexed: 06/06/2023] Open
Abstract
Esophageal neuroendocrine carcinoma (E-NEC) is an aggressive disease with a poor prognosis. The present study aimed to assess the role of surgery in the treatment of patients with resectable E-NEC, and identify a microRNA (miRNA/miR) signature in association with positive postoperative outcomes. Between February 2017 and August 2019, 36 patients with E-NEC who underwent curative surgery at the Japan Neuroendocrine Tumor Society partner hospitals were enrolled in the study. A total of 16 (44.4%) patients achieved disease-free survival (non-relapse group), whereas 20 (55.6%) patients developed tumor relapse (relapse group) during the median follow-up time of 36.5 months (range, 1-242) after surgery with a 5-year overall survival rate of 100 and 10.8%, respectively (P<0.01). No clinicopathological parameters, such as histological type or TNM staging, were associated with tumor relapse. Microarray analysis of 2,630 miRNAs in 11 patients with sufficient quality RNA revealed 12 miRNAs (miR-1260a, -1260b, -1246, -4284, -612, -1249-3p, -296-5p, -575, -6805-3p, -12136, -6822-5p and -4454) that were differentially expressed between the relapse (n=6) and non-relapse (n=5) groups. Furthermore, the top three miRNAs (miR-1246, -1260a and -1260b) were associated with overall survival (P<0.01). These results demonstrated that surgery-based multidisciplinary treatment is effective in a distinct subpopulation of limited stage E-NEC. A specific miRNA gene set is suggested to be associated with treatment outcome.
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Affiliation(s)
- Tomoyuki Okumura
- Department of Surgery and Science, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama 930-0194, Japan
| | - Tsutomu Fujii
- Department of Surgery and Science, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama 930-0194, Japan
| | - Kenji Terabayashi
- Department of Mechanical and Intellectual Systems Engineering, Faculty of Engineering, University of Toyama, Toyama 930-8555, Japan
| | - Takashi Kojima
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Chiba 277-8577, Japan
| | - Shigeru Takeda
- Department of Gastroenterological, Breast and Endocrine Surgery, Graduate School of Medicine, Yamaguchi University, Ube, Yamaguchi 755-8505, Japan
| | - Tomomi Kashiwada
- Department of Medical Oncology, Division Hematology, Respiratory Medical and Oncology, Saga University, Saga 849-8501, Japan
| | - Kazuhiro Toriyama
- Department of Gastroenterology, Aichi Cancer Center Hospital, Nagoya, Aichi 464-8681, Japan
| | - Susumu Hijioka
- Department of Gastroenterology, Aichi Cancer Center Hospital, Nagoya, Aichi 464-8681, Japan
| | - Tatsuya Miyazaki
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Miho Yamamoto
- Department of Gastroenterological Surgery, Tokai University School of Medicine, Isehara, Kanagawa 259-1193, Japan
| | - Shunsuke Tanabe
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan
| | - Yasuhiro Shirakawa
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan
| | - Masayuki Furukawa
- Department of Hepato-Biliary-Pancreatology, National Hospital Organization Kyushu Cancer Center, Fukuoka 811-1395, Japan
| | - Yoshitaka Honma
- Department of Head and Neck, Esophageal Medical Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
| | - Isamu Hoshino
- Division of Gastroenterological Surgery, Chiba Cancer Center, Chiba 260-8717, Japan
| | - Yoshihiro Nabeya
- Division of Gastroenterological Surgery, Chiba Cancer Center, Chiba 260-8717, Japan
| | - Hironori Yamaguchi
- Department of Clinical Oncology, Jichi Medical University, Shimotsuke, Tochigi 329-0498, Japan
| | - Shinji Uemoto
- President's Office, Shiga University of Medical Science, Otsu, Shiga 520-2192, Japan
| | - Yutaka Shimada
- Department of Nanobio Drug Discovery, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto 606-8501, Japan
| | - Hisahiro Matsubara
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
| | - Soji Ozawa
- Department of Gastroenterological Surgery, Tokai University School of Medicine, Isehara, Kanagawa 259-1193, Japan
| | - Hiroyasu Makuuchi
- Department of Gastroenterological Surgery, Tokai University School of Medicine, Isehara, Kanagawa 259-1193, Japan
| | - Masayuki Imamura
- Neuroendocrine Tumor Center, Kansai Electric Power Hospital, Osaka 553-0003, Japan
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Helicobacter pylori Infection Mediates Inflammation and Tumorigenesis-Associated Genes Through miR-155-5p: An Integrative Omics and Bioinformatics-Based Investigation. Curr Microbiol 2022; 79:192. [PMID: 35551487 DOI: 10.1007/s00284-022-02880-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 04/15/2022] [Indexed: 11/03/2022]
Abstract
Helicobacter pylori (H. pylori) is a major human pathogenic bacterium that survives in the gastric mucosa. The aim of this study is to evaluate the expression of the target gene network of miR-155-5p in H. pylori-related gastritis using a combination of public gene expression datasets and web-based platforms. To evaluate the expression of genes related to gastritis, we used two datasets from Gene Expression Omnibus (GEO) database. Then, we determined the overlaps between the predicted miR-155-5p target genes and gastritis-dysregulated GEO datasets genes; in the next step, we identified the possible miR-155-5p target-DEGs (Target-Differentially Expressed Genes). Also, we performed multiple bioinformatics analyses to identify the most important targets and downstream pathways associated with this miRNA. Using the UCSC cancer genomic browser analysis tool, we investigated the expression of hub genes in relation to gastric cancer and H. pylori infection, as well as the potential role of hub genes in gastritis, inflammation, and cancer. In this regard, 28 differentially expressed target genes of miR-155-5p were identified. Most of the captured target genes were correlated with the host immune response and inflammation. Based on the specific patterns of expression in gastritis and cancer, CD9, MST1R, and ADAM10 were candidates for the most probable targets of miR-155-5p. Although the focus of this study is primarily on bioinformatics, we think that our findings should be experimentally validated before they can be used as potential therapeutic and diagnostic tools.
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Chen YL, Liu XL, Li L. Prognostic value of low microRNA-34a expression in human gastrointestinal cancer: a systematic review and meta-analysis. BMC Cancer 2021; 21:63. [PMID: 33446130 PMCID: PMC7807881 DOI: 10.1186/s12885-020-07751-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 12/18/2020] [Indexed: 11/10/2022] Open
Abstract
Background Mounting evidence shows that microRNA-34a (miR-34a) is involved in cancer prognosis. Therefore, we summarize the predictive role of miR-34a for survival in patients with gastrointestinal cancers (GICs). Methods All eligible studies were found by searching PubMed, Web of Science and EMBASE, and survival results were extracted. Then, the hazard ratio (HR) with the corresponding 95% confidence interval (CI) was calculated to evaluate the prognostic role of miR-34a in GICs. The association between miR-34a expression and clinicopathological characteristics was estimated by odds ratios (ORs) and 95% CIs. Results A total of 20 studies were included in this meta-analysis. For overall survival (OS), lower miR-34a expression could probably predict poorer outcome in GICs, with a pooled HR of 1.86 (95% CI: 1.52–2.28, P < 0.01). For disease-free survival (DFS), progression-free survival (PFS), and recurrence-free survival (RFS), lower miR-34a expression was related to worse DFS/PFS/RFS with a pooled HR of 1.86 (95% CI: 1.31–2.63, P < 0.01). A significant relation of differentiation/TNM stage/lymphatic metastasis and the expression level of miR-34a was identified. Conclusion This meta-analysis revealed that lower miR-34a expression is significantly connected with worse OS and DFS/PFS/RFS in GIC patients. In addition, the miR-34a expression level is relatively lower in patients with lymph node metastasis than in patients without lymph node metastasis, and decreased miR-34a expression levels are linked to poor tumour differentiation and late TNM stage. MiR-34a may become a new factor for the prognosis prediction and progression of GICs. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-020-07751-y.
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Affiliation(s)
- Yan-Ling Chen
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, 899 Ping Hai Road, Suzhou, 215006, Jiangsu, China
| | - Xiao-Lin Liu
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, 899 Ping Hai Road, Suzhou, 215006, Jiangsu, China.
| | - Ling Li
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, 899 Ping Hai Road, Suzhou, 215006, Jiangsu, China.
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Peng Q, Zhao P, Shen Y, Cheng M, Wu Y, Zhu Y. Prognostic implication and functional exploration for microRNA-20a as a molecular biomarker of gastrointestinal cancer. BMC Cancer 2020; 20:420. [PMID: 32410584 PMCID: PMC7227208 DOI: 10.1186/s12885-020-06875-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 04/16/2020] [Indexed: 02/07/2023] Open
Abstract
Background It is generally accepted that microRNA-20a (miR-20a) is aberrantly expressed in gastrointestinal cancer (GIC), and may be associated with the prognosis of GIC patients. Nevertheless, the clinical prognostic value of miR-20a expression in GIC remains controversial. Methods We first conducted a comprehensive literature search of the clinical data and pooled them for evidence in assessing prognostic significance of miR-20a expression in GIC. Afterwards, we applied some bioinformatic analysis methods to explore the biological function of miR-20a and explain why miR-20a could act as an effective biomarker. Results The pooled results showed that enhanced miR-20a expression was significantly associated with poor survival in GIC patients (HR: 1.36; 95%CI: 1.21–1.52; P < 0.001). According to the subgroup analysis, the ethnicity, cancer type, sample source, and sample size may have an impact on the predictive roles for miR-20a. The gene ontologies enriched by the predicted miR-20a targets were highly associated with some important biological processes, cell components and molecular functions. Moreover, a series of prominent pathways linked with GIC carcinogenesis were identified. Ultimately, the crucial targets and modules were identified by constructing the protein-protein interaction network of miR-20a targets, which were highly associated with the initiation and progression of GIC according to previous molecular biology experiments. Conclusions Our results indicated that high expression of miR-20a may be a credible indicator of worse prognosis in GIC. Further studies involving biological experiments and larger sample sizes should be performed to validate these findings.
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Affiliation(s)
- Qiliang Peng
- Department of Radiotherapy & Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China
| | - Peifeng Zhao
- Department of Radiotherapy & Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China
| | - Yi Shen
- Department of Radiation Oncology, The Affiliated Suzhou Science & Technology Town Hospital of Nanjing Medical University, Suzhou, China
| | - Ming Cheng
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Yongyou Wu
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China.
| | - Yaqun Zhu
- Department of Radiotherapy & Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China. .,Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China.
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Kong J, Wang W. A Systemic Review on the Regulatory Roles of miR-34a in Gastrointestinal Cancer. Onco Targets Ther 2020; 13:2855-2872. [PMID: 32308419 PMCID: PMC7138617 DOI: 10.2147/ott.s234549] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 12/22/2019] [Indexed: 12/12/2022] Open
Abstract
MicroRNAs (miRNAs) are a class of endogenous non-coding single-stranded small-molecule RNAs that regulate gene expression by repressing target messenger RNA (mRNA) translation or degrading mRNA. miR-34a is one of the most important miRNAs participating in various physiological and pathological processes. miR-34a is abnormally expressed in a variety of tumors. The roles of miR-34a in gastrointestinal cancer (GIC) draw lots of attention. Numerous studies have demonstrated that dysregulated miR-34a is closely related to the proliferation, differentiation, migration, and invasion of tumor cells, as well as the diagnosis, prognosis, treatment, and chemo-resistance of tumors. Thus, we systematically reviewed the abnormal expression and regulatory roles of miR-34a in GICs including esophageal cancer (EC), gastric cancer (GC), colorectal cancer (CRC), hepatocellular carcinoma (HCC), pancreatic cancer (PC), and gallbladder cancer (GBC). It may provide a profile of versatile roles of miR-34a in GICs.
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Affiliation(s)
- Jiehong Kong
- Center for Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, People's Republic of China
| | - Weipeng Wang
- Center for Drug Metabolism and Pharmacokinetics, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, People's Republic of China
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Yao S, Han L, Tian Z, Yu Y, Zhang Q, Li X, Mao T, Yang L. Celastrol inhibits growth and metastasis of human gastric cancer cell MKN45 by down‐regulating microRNA‐21. Phytother Res 2019; 33:1706-1716. [PMID: 30989726 DOI: 10.1002/ptr.6359] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 03/04/2019] [Accepted: 03/06/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Shan‐Shan Yao
- Clinical Skill Training CenterThe Affiliated Hospital of Qingdao University Qingdao China
| | - Lei Han
- Department of NutritionThe Affiliated Hospital of Qingdao University Qingdao China
| | - Zi‐Bin Tian
- Department of GastroenterologyThe Affiliated Hospital of Qingdao University Qingdao China
| | - Ya‐Nan Yu
- Department of GastroenterologyThe Affiliated Hospital of Qingdao University Qingdao China
| | - Qi Zhang
- Department of GastroenterologyThe Affiliated Hospital of Qingdao University Qingdao China
| | - Xiao‐Yu Li
- Department of GastroenterologyThe Affiliated Hospital of Qingdao University Qingdao China
| | - Tao Mao
- Department of GastroenterologyThe Affiliated Hospital of Qingdao University Qingdao China
| | - Lin Yang
- Department of GastroenterologyThe Affiliated Hospital of Qingdao University Qingdao China
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Rossi AFT, Contiero JC, Manoel-Caetano FDS, Severino FE, Silva AE. Up-regulation of tumor necrosis factor-α pathway survival genes and of the receptor TNFR2 in gastric cancer. World J Gastrointest Oncol 2019; 11:281-294. [PMID: 31040894 PMCID: PMC6475670 DOI: 10.4251/wjgo.v11.i4.281] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/16/2019] [Accepted: 02/28/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Gastric carcinogenesis can be induced by chronic inflammation triggered by Helicobacter pylori (H. pylori) infection. Tumor necrosis factor (TNF)-α and its receptors (TNFR1 and TNFR2) regulate important cellular processes, such as apoptosis and cell survival, and the disruption of which can lead to cancer. This signaling pathway is also modulated by microRNAs (miRNAs), altering gene expression.
AIM To evaluate the mRNA and miRNAs expression involved in the TNF-α signaling pathway in gastric cancer (GC) tissues and its relationship.
METHODS Quantitative polymerase chain reaction (qPCR) by TaqMan® assay was used to quantify the RNA transcript levels of TNF-α signaling pathway (TNF, TNFR1, TNFR2, TRADD, TRAF2, CFLIP, NFKB1, NFKB2, CASP8, CASP3) and miRNAs that targets genes from this pathway (miR-19a, miR-34a, miR-103a, miR-130a, miR-181c) in 30 GC fresh tissue samples. Molecular diagnosis of H. pylori was performed by nested PCR for gene HSP60. A miRNA:mRNA interaction network was construct using Cytoscape v3.1.1 from the in silico analysis performed using public databases.
RESULTS Up-regulation of cellular survival genes as TNF, TNFR2, TRADD, TRAF2, CFLIP, and NFKB2, besides CASP8 and miR-34a was observed in GC tissues, whereas mediators of apoptosis such as TNFR1 and CASP3 were down-regulated. When the samples were stratified by histological type, the expression of miR-103a and miR-130a was significantly increased in the diffuse-type of GC compared to the intestinal-type. However, no influence of H. pylori infection was observed on the expression levels of mRNA and miRNAs analyzed. Moreover, the miRNA:mRNA interaction network showed several interrelations between the miRNAs and their target genes, highlighting miR-19a and miR-103a, which has as predicted or validated target a large number of genes in the TNF-α pathway, including TNF, TNFR1, TNFR2, CFLIP, TRADD, CASP3 and CASP8.
CONCLUSION Our findings show that cell survival genes mediated by TNF/TNFR2 binding is up-regulated in GC favoring its pro-tumoral effect, while pro-apoptotic genes as CASP3 and TNFR1 are down-regulated, indicating disbalance between apoptosis and cell proliferation processes in this neoplasm. This process can also be influenced by an intricate regulatory network of miRNA:mRNA.
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Affiliation(s)
- Ana Flávia Teixeira Rossi
- Department of Biology, São Paulo State University – UNESP, São José do Rio Preto, SP 15054-000, Brazil
| | - Júlia Cocenzo Contiero
- Department of Biology, São Paulo State University – UNESP, São José do Rio Preto, SP 15054-000, Brazil
| | | | - Fábio Eduardo Severino
- Department of Surgery and Orthopedics, Faculty of Medicine, São Paulo State University – UNESP, Botucatu, SP 18618-687, Brazil
| | - Ana Elizabete Silva
- Department of Biology, São Paulo State University – UNESP, São José do Rio Preto, SP 15054-000, Brazil
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Zhang Y, Guan DH, Bi RX, Xie J, Yang CH, Jiang YH. Prognostic value of microRNAs in gastric cancer: a meta-analysis. Oncotarget 2017; 8:55489-55510. [PMID: 28903436 PMCID: PMC5589675 DOI: 10.18632/oncotarget.18590] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 05/08/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Previous articles have reported that expression levels of microRNAs (miRNAs) are associated with survival time of patients with gastric cancer (GC). A systematic review and meta-analysis was performed to study the outcome of it. DESIGN Meta-analysis. METHODS English studies estimating expression levels of miRNAs with any of survival curves in GC were identified up till March 19, 2017 through performing online searches in PubMed, EMBASE, Web of Science and Cochrane Database of Systematic Reviews by two authors independently. The pooled hazard ratios (HR) with 95% confidence intervals (CI) were used to estimate the correlation between miRNA expression and overall survival (OS). RESULTS Sixty-nine relevant articles about 26 miRNAs with 6148 patients were ultimately included. GC patients with high expression of miR-20b (HR=2.38, 95%CI=1.16-4.87), 21 (HR=1.77, 95%CI=1.01-3.08), 106b (HR=1.84, 95%CI=1.15-2.94), 196a (HR=2.66, 95%CI=1.94-3.63), 196b (HR=1.67, 95%CI=1.38-2.02), 214 (HR=1.84, 95%CI=1.27-2.67) or low expression of miR-125a (HR=2.06, 95%CI=1.26-3.37), 137 (HR=3.21, 95%CI=1.68-6.13), 141 (HR=2.47, 95%CI=1.34-4.56), 145 (HR=1.62, 95%CI=1.07-2.46), 146a (HR=2.60, 95%CI=1.63-4.13), 206 (HR=2.85, 95%CI=1.73-4.70), 218 (HR=2.61, 95%CI=1.74-3.92), 451 (HR=1.73, 95%CI=1.19-2.52), 486-5p (HR=2.45, 95%CI=1.65-3.65), 506 (HR=2.07, 95%CI=1.33-3.23) have significantly poor OS (P<0.05). CONCLUSIONS In summary, miR-20b, 21, 106b, 125a, 137, 141, 145, 146a, 196a, 196b, 206, 214, 218, 451, 486-5p and 506 demonstrate significantly prognostic value. Among them, miR-20b, 125a, 137, 141, 146a, 196a, 206, 218, 486-5p and 506 are strong biomarkers of prognosis in GC.
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Affiliation(s)
- Yue Zhang
- 1 First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan 250355, Shandong, People's Republic of China
| | - Dong-Hui Guan
- 2 Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong, People's Republic of China
| | - Rong-Xiu Bi
- 2 Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong, People's Republic of China
| | - Jin Xie
- 2 Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong, People's Republic of China
| | - Chuan-Hua Yang
- 3 Department of Cardiology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong, People's Republic of China
| | - Yue-Hua Jiang
- 4 Central Laboratory, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong, People's Republic of China
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Vojtechova Z, Zavadil J, Klozar J, Grega M, Tachezy R. Comparison of the miRNA expression profiles in fresh frozen and formalin-fixed paraffin-embedded tonsillar tumors. PLoS One 2017; 12:e0179645. [PMID: 28644855 PMCID: PMC5482461 DOI: 10.1371/journal.pone.0179645] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 06/01/2017] [Indexed: 02/06/2023] Open
Abstract
MicroRNAs are considered as promising prognostic and diagnostic biomarkers of human cancer since their profiles differ between tumor types. Most of the tumor profiling studies were performed on rarely available fresh frozen (FF) samples. Alternatively, archived formalin-fixed paraffin-embedded (FFPE) tissue samples are also well applicable to larger-scale retrospective miRNA profiling studies. The aim of this study was to perform systematic comparison of the miRNA expression profiles between FF and macrodissected FFPE tonsillar tumors using the TaqMan Low Density Array system, with the data processed by different software programs and two types of normalization methods. We observed a marked correlation between the miRNA expression profiles of paired FF and FFPE samples; however, only 27-38% of the differentially deregulated miRNAs overlapped between the two source systems. The comparison of the results with regard to the distinct modes of data normalization revealed an overlap in 58-67% of differentially expressed miRNAs, with no influence of the choice of software platform. Our study highlights the fact that for an accurate comparison of the miRNA expression profiles from published studies, it is important to use the same type of clinical material and to test and select the best-performing normalization method for data analysis.
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Affiliation(s)
- Zuzana Vojtechova
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Prague, Czech Republic
- Department of Immunology, Institute of Hematology and Blood Transfusion, Prague, Czech Republic
| | - Jiri Zavadil
- Molecular Mechanisms and Biomarkers Group, International Agency for Research on Cancer, Lyon, France
| | - Jan Klozar
- Department of Otorhinolaryngology and Head and Neck Surgery, 1 Faculty of Medicine, Charles University, Motol University Hospital, Prague, Czech Republic
| | - Marek Grega
- Department of Pathology and Molecular Medicine, 2 Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Ruth Tachezy
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Prague, Czech Republic
- Department of Immunology, Institute of Hematology and Blood Transfusion, Prague, Czech Republic
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Jafari N, Abediankenari S. MicroRNA-34 dysregulation in gastric cancer and gastric cancer stem cell. Tumour Biol 2017; 39:1010428317701652. [PMID: 28468587 DOI: 10.1177/1010428317701652] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Gastric cancer is a major cause of cancer mortality worldwide, with a low survival rate for patients with advanced forms of the disease. Over the recent decades, the investigation of the pathophysiological mechanisms of tumourigenesis has opened promising avenues to understand some of the complexities of cancer treatment. However, tumour regeneration and metastasis impose great difficulty for gastric cancer cure. In recent years, cancer stem cells - a small subset of tumour cells in many cancers - have become a major focus of cancer research. Cancer stem cells are capable of self-renewal and are known to be responsible for tumour initiation, metastasis, therapy resistance and cancer recurrence. Recent studies have revealed the key role of microRNAs - small noncoding RNAs regulating gene expression - in these processes. MicroRNAs play crucial roles in the regulation of a wide range of biological processes in a post-transcriptional manner, though their expression is dysregulated in most malignancies, including gastric cancer. In this article, we review the consequences of aberrant expression of microRNA-34 in cancer and cancer stem cells, with a specific focus on the miR-34 dysregulation in gastric cancer and gastric cancer stem cells. We address the critical effects of the aberrant expression of miR-34 and its target genes in maintaining cancer stem cell properties. Information collection and discussion about the advancements in gastric cancer stem cells and microRNAs can be useful for providing novel insights into patient treatment.
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Affiliation(s)
- Narjes Jafari
- Immunogenetics Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Saeid Abediankenari
- Immunogenetics Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
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Wang X, Hang Y, Liu J, Hou Y, Wang N, Wang M. Anticancer effect of curcumin inhibits cell growth through miR-21/PTEN/Akt pathway in breast cancer cell. Oncol Lett 2017; 13:4825-4831. [PMID: 28599484 PMCID: PMC5452995 DOI: 10.3892/ol.2017.6053] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Accepted: 04/22/2016] [Indexed: 01/07/2023] Open
Abstract
Curcumin is a polyphenol extracted from turmeric, which that belongs to the Zingiberaceae family. Curcumin has numerous effects, including anti-inflammatory, antitumor, anti-oxidative and antimicrobial effects. However, the effects of curcumin on human breast cancer cells remain largely unknown. The aim of the present study was to investigate the anticancer effects and the mechanisms by which curcumin affects breast cancer cells. The anticancer effect of curcumin on cell viability and cytotoxicity on human breast cancer MCF-7 cells was analyzed using 3-(4,5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2H-tetrazolium bromide and lactate dehydrogenase assays, respectively. Cell apoptosis of MCF-7 cells was detected using flow cytometry, 4′,6-diamidino-2-phenylindolestaining assay and caspase-3/9 activity kits. Reverse transcription-quantitative polymerase chain reaction was used to analyze microRNA-21 (miR-21) expression in MCF-7 cells. The protein expression of phosphatase and tensin homolog (PTEN) and phospho-protein kinase B (pAkt) was determined by western blot analysis. miR-21 was transfected into MCF-7 cells and the anticancer effect of curcumin on cell viability and the expression of PTEN and pAkt was analyzed. The present results demonstrated that curcumin inhibited cell viability and induced cytotoxicity of MCF-7 cells in a concentration- and time-dependent manner, by inducing apoptosis and increasing caspase-3/9 activities. In addition, curcumin downregulated miR-21 expression in MCF-7 cells by upregulating the PTEN/Akt signaling pathway. The present study has for the first time, to the best of our knowledge, revealed the anticancer effect of curcumin in suppressing breast cancer cell growth, and has elucidated that the miR-21/PTEN/Akt signaling pathway is a key mechanism for the anticancer effects of curcumin.
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Affiliation(s)
- Xinzheng Wang
- Department III of General Surgery, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan 471000, P.R. China
| | - Yakai Hang
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Jinbiao Liu
- Department III of General Surgery, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan 471000, P.R. China
| | - Yongqiang Hou
- Department III of General Surgery, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan 471000, P.R. China
| | - Ning Wang
- Department III of General Surgery, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan 471000, P.R. China
| | - Mingjun Wang
- Department III of General Surgery, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan 471000, P.R. China
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12
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Zhang L, Huang Z, Zhang H, Zhu M, Zhu W, Zhou X, Liu P. Prognostic value of candidate microRNAs in gastric cancer: A validation study. Cancer Biomark 2017; 18:221-230. [PMID: 27983528 DOI: 10.3233/cbm-160091] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Studies have reported the prognostic value of dysregulated microRNAs (miRNAs) in gastric cancer (GC). However, the results demonstrated so far are inconsistent. OBJECTIVE To better understand the miRNAs with prognostic relevance. METHODS Evaluable miRNAs were selected based on our selection criteria and further analyzed in formalin-fixed paraffin-embedded (FFPE) tissue samples of 169 GC patients using quantitative real-time polymerase chain reaction (qRT-PCR). RESULTS A total of 19 miRNAs were selected as candidate miRNAs. Among those miRNAs identified, high expression of miR-21-5p was related to poor overall survival (OS) and disease free survival (DFS) and was identified as an independent prognostic factor. Cases with high level of miR-200c-3p showed poor DFS. Subgroup analysis revealed that high expression of miR-21-5p and miR-222-3p was associated with poor OS and DFS in GC patients not received adjuvant chemotherapy. In male patients, high expression level of miR-21-5p was related to poor OS and DFS. CONCLUSIONS The present study confirmed that elevated level of miR-21-5p could serve as an independent predictor for poor OS and DFS of GC patients. Moreover, miR-200c-3p, miR-222-3p might also play important roles in the prognosis of GC patients. Further studies are warranted to validate our findings and identify the functions and mechanisms of these miRNAs.
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13
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Sonohara F, Inokawa Y, Hayashi M, Kodera Y, Nomoto S. Epigenetic modulation associated with carcinogenesis and prognosis of human gastric cancer. Oncol Lett 2017; 13:3363-3368. [PMID: 28529571 DOI: 10.3892/ol.2017.5912] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 02/14/2017] [Indexed: 12/17/2022] Open
Abstract
Gastric cancer (GC) is a leading cause of cancer-related death, particularly in Asia. Epidemiological and other clinical studies have identified an association between a number of risk factors, including Helicobacter pylori, and GC. A number of studies have also examined genetic changes associated with the development and progression of GC. When considering the clinical significance of the expression of a specific gene, its epigenetic modulation should be considered. Epigenetic modulation appears to be a primary driver of changes in gastric tissue that promotes carcinogenesis and progression of GC and other neoplasms. The role of epigenetic modulation in GC carcinogenesis and progression has been widely studied in recent years. In the present review, recent results of epigenetic modulation associated with GC and their effects on clinical outcome are examined, with particular respect to DNA methylation, histone modulation and non-coding RNA. A number of studies indicate that epigenetic changes in the expression of specific genes critically affect their clinical significance and further study may reveal epigenetic changes as the basis for targeted molecular therapy or novel biomarkers that predict GC prognosis or extension of this often fatal disease.
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Affiliation(s)
- Fuminori Sonohara
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan.,Department of Surgery, Aichi-Gakuin University School of Dentistry, Nagoya, Aichi 464-8651, Japan
| | - Yoshikuni Inokawa
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan.,Department of Surgery, Aichi-Gakuin University School of Dentistry, Nagoya, Aichi 464-8651, Japan
| | - Masamichi Hayashi
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Yasuhiro Kodera
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan
| | - Shuji Nomoto
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi 466-8550, Japan.,Department of Surgery, Aichi-Gakuin University School of Dentistry, Nagoya, Aichi 464-8651, Japan
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14
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Wakabayashi K, Mori F, Kakita A, Takahashi H, Tanaka S, Utsumi J, Sasaki H. MicroRNA expression profiles of multiple system atrophy from formalin-fixed paraffin-embedded samples. Neurosci Lett 2016; 635:117-122. [DOI: 10.1016/j.neulet.2016.10.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 10/06/2016] [Accepted: 10/19/2016] [Indexed: 12/13/2022]
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15
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Okumura T, Kojima H, Miwa T, Sekine S, Hashimoto I, Hojo S, Nagata T, Shimada Y. The expression of microRNA 574-3p as a predictor of postoperative outcome in patients with esophageal squamous cell carcinoma. World J Surg Oncol 2016; 14:228. [PMID: 27565418 PMCID: PMC5002115 DOI: 10.1186/s12957-016-0985-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 08/17/2016] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Despite advances in radical esophagectomies and adjuvant therapy, the postoperative prognosis in esophageal squamous cell carcinoma (ESCC) patients remains poor. The aim of this study was to identify a molecular signature to predict postoperative favorable outcomes in patients with ESCC. METHODS As a training data set, total RNA was extracted from formalin-fixed paraffin-embedded samples of surgically removed specimens from 19 ESCC patients who underwent curative esophagectomy. The expression of microRNA (miRNA) was detected using a miRNA oligo chip on which 885 genes were mounted. As a validation data set, we obtained frozen samples of surgically resected tumors from 12 independent ESCC patients and the expression of miR-574-3p was detected by quantitative real-time PCR. RESULTS Our microarray analysis in the training set patients identified three miRNAs (miR-574-3p, miR-106b, and miR-1303) and five miRNAs (miR-1203, miR-1909, miR-204, miR-371-3p, miR-886-3p) which were differentially expressed between the patients with (n = 14) and without (n = 5) postoperative tumor relapse (p < 0.01 and p < 0.05, respectively). Higher expression of miR-574-3p, which showed the most significant association with non-relapse (p = 0.001), was associated with favorable overall survival (p = 0.016). Real-time PCR experiments on the validation set patients confirmed that higher expression of miR-574-3p was associated with non-tumor relapse (p = 0.029) and better overall survival (p = 0.004). CONCLUSIONS Our results suggest that the aberrant expression of the miRNAs identified in this study plays key roles in the progression of ESCC. miR-574-3p was suggested to have a tumor suppressor effect, and thus, to be a predictor of postoperative outcome in patients with ESCC.
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Affiliation(s)
- Tomoyuki Okumura
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194 Japan
| | - Hirohumi Kojima
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194 Japan
| | - Takeshi Miwa
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194 Japan
| | - Shinichi Sekine
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194 Japan
| | - Isaya Hashimoto
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194 Japan
| | - Shozo Hojo
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194 Japan
| | - Takuya Nagata
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194 Japan
| | - Yutaka Shimada
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama, 930-0194 Japan
- Department of Nanobio Drug Discovery, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
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16
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Ren F, Zhang X, Liang H, Luo D, Rong M, Dang Y, Chen G. Prognostic significance of MiR-34a in solid tumors: a systemic review and meta-analysis with 4030 patients. Int J Clin Exp Med 2015; 8:17377-17391. [PMID: 26770329 PMCID: PMC4694229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Accepted: 10/09/2015] [Indexed: 06/05/2023]
Abstract
PURPOSE The aim of the present meta-analysis and systematic review was to explore the association between the expression of miR-34a and prognosis in solid tumor. METHODS PubMed, Google Scholar, Web of Science and NCBI databases were used to search studies to evaluate the effect of miR-34a expression on clinical outcomes, including overall survival (OS), recurrence-free survival (RFS), disease-free survival (DFS), progression-free survival (PFS) and event-free survival (EFS) in solid tumor. The pooled random effect models were performed to calculate pooled hazard ratio (HR), 95% confidence interval (CI) to assess the association. RESULTS Twenty-three eligible studies with 4030 patients were included in this meta-analysis. It was confirmed that increased expression of miR-34a was in relevant with better DFS/RFS/PFS/EFS, which was identified with both univariate and multivariate models (univariate model: HR = 0.62, 95% CI: 0.42-0.92, P = 0.019; multivariate model: HR = 0.55, 95% CI: 0.34-0.88, P = 0.013). Furthermore, in the analysis of relationship between miR-34a and DFS/RFS/PFS/EFS, the results remained similar when excluding the studies contributed to the heterogeneity (univariate analysis: HR = 0.57, 95% CI: 0.46-0.70, P < 0.001; multivariate analysis: HR = 0.57, 95% CI: 0.43-0.75, P < 0.001). With univariate analysis, it was also demonstrated that miR-34a overexpression might be positively associated with a favorable OS in solid tumor (HR = 0.73, 95% CI: 0.54-1.00, P = 0.005) with considering an obvious heterogeneity. CONCLUSION Our current study supports the notion that miR-34a may be a potential biomarker to predict OS and RFS/PFS/DFS/EFS in solid tumor.
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Affiliation(s)
- Fanghui Ren
- Department of Pathology, First Affiliated Hospital of Guangxi Medical UniversityNanning 530021, Guangxi Zhuang Autonomous Region, P. R. China
| | - Xin Zhang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical UniversityNanning 530021, Guangxi Zhuang Autonomous Region, P. R. China
| | - Haiwei Liang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical UniversityNanning 530021, Guangxi Zhuang Autonomous Region, P. R. China
| | - Dianzhong Luo
- Department of Pathology, First Affiliated Hospital of Guangxi Medical UniversityNanning 530021, Guangxi Zhuang Autonomous Region, P. R. China
| | - Minhua Rong
- Department of Research, Affiliated Cancer Hospital, Guangxi Medical UniversityNanning 530021, Guangxi Zhuang Autonomous Region, P. R. China
| | - Yiwu Dang
- Department of Pathology, First Affiliated Hospital of Guangxi Medical UniversityNanning 530021, Guangxi Zhuang Autonomous Region, P. R. China
| | - Gang Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical UniversityNanning 530021, Guangxi Zhuang Autonomous Region, P. R. China
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17
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The clinical value of ncRNAs in gastric cancer: a systematic review and meta-analyses. Tumour Biol 2015; 36:4017-25. [DOI: 10.1007/s13277-015-3411-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 03/30/2015] [Indexed: 12/28/2022] Open
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18
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Zhang S, Chen P, Huang Z, Hu X, Chen M, Hu S, Hu Y, Cai T. Sirt7 promotes gastric cancer growth and inhibits apoptosis by epigenetically inhibiting miR-34a. Sci Rep 2015; 5:9787. [PMID: 25860861 PMCID: PMC4392652 DOI: 10.1038/srep09787] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Accepted: 02/23/2015] [Indexed: 12/12/2022] Open
Abstract
Gastric cancer is the fourth most common cancer worldwide, with a low 5-year survival rate. Epigenetic modification plays pivotal roles in gastric cancer development. However, the role of histone-modifying enzymes in gastric cancer remains largely unknown. Here we report that Sirt7, a NAD+-dependent class III histone deacetylase, is over-expressed in human gastric cancer tissues. Sirt7 level is significantly correlated with disease stage, metastasis, and survival. Knockdown of Sirt7 in gastric cancer cells inhibits cell proliferation and colony formation in vitro. In vivo subcutaneous xenograft results also show that Sirt7 knockdown can markedly repress gastric cancer cell growth. In addition, Sirt7 depletion induces apoptosis in gastric cancer cells via up-regulating expression of pro-apoptotic proteins and down-regulating anti-apoptotic proteins. Mechanically, Sirt7 binds to the promoter of miR-34a and deacetylases the H3K18ac, thus represses miR-34a expression. Reversely, depletion of miR-34a inhibits gastric cancer apoptosis induced by Sirt7 knockdown, and restores cellular capacity of proliferation and colony formation. miR-34a depletion reduces Sirt7-knockdown-induced arrest of gastric growth. Finally, miR-34a is tightly associated with survival of patients with gastric cancer.
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Affiliation(s)
- Shun Zhang
- Stem Cell Laboratory, Ningbo No.2 Hospital, Ningbo 315010, Zhejiang, China
| | - Ping Chen
- Gastrointestinal and Hernia Ward, Ningbo No.2 Hospital, Ningbo 315010, Zhejiang, China
| | - Zuoan Huang
- Stem Cell Laboratory, Ningbo No.2 Hospital, Ningbo 315010, Zhejiang, China
| | - Xiaorong Hu
- Stem Cell Laboratory, Ningbo No.2 Hospital, Ningbo 315010, Zhejiang, China
| | - Mengting Chen
- Department of Internal Medicine, School of Medicine, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Shanshan Hu
- Department of Internal Medicine, School of Medicine, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Yixin Hu
- Department of Internal Medicine, School of Medicine, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Ting Cai
- Stem Cell Laboratory, Ningbo No.2 Hospital, Ningbo 315010, Zhejiang, China
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19
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Zhang H, Li S, Yang J, Liu S, Gong X, Yu X. The prognostic value of miR-34a expression in completely resected gastric cancer: tumor recurrence and overall survival. Int J Clin Exp Med 2015; 8:2635-2641. [PMID: 25932212 PMCID: PMC4402859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Accepted: 01/29/2015] [Indexed: 06/04/2023]
Abstract
The prognosis of gastric cancer is mainly linked to tumor recurrence. MicroRNA-34a (miR-34a) is a direct transcriptional target of p53 and links tumor suppressor function and the oncogenic pathways in some cancers. However, the role of miR-34a in predicting prognosis of gastric cancer has not been fully elucidated. In this study, we aimed to investigate the expression level of miR-34a and its prognostic value in gastric cancer. A total of 137 consecutive gastric cancer patients who underwent gastrectomy with D2 lymph node dissection were included in this study. Quantitative real-time polymerase chain reaction (qRT-PCR) was utilized to detect miR-34a expression in gastric cancer tissues and adjacent normal tissues. The results showed that the levels of miR-34a expression were significantly decreased in the tumor tissues compared with the adjacent normal tissues (P<0.001). Low miR-34a expression level was associated with lymph node involvement (P=0.004), advanced TNM stage (P=0.006), poor tumor differentiation (P=0.024), high tumor recurrence rate (P=0.008), and poor five-year survival (P<0.001). The median time to recurrence and median overall survival time were significantly shorter in patients with low miR-34a levels compared with those with high miR-34a levels (P=0.028 and P=0.021, respectively). Furthermore, when analyzed with a multivariate Cox regression model, a low miR-34a level was significantly correlated with high recurrence rate and poor overall survival. Taken together, our results suggest that downregulation of miR-34a in gastric cancer is associated with high recurrence rate and poor overall survival and that miR-34a may be served as a prognostic marker for gastric cancer.
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Affiliation(s)
- Huaping Zhang
- Department of Gastrointestinal Surgery, Hepatobiliary Surgery and Thoracic Surgery, Yuhuangding HospitalYantai 264000, Shandong, China
| | - Shaojun Li
- Department of Gastrointestinal Surgery, Hepatobiliary Surgery and Thoracic Surgery, Yuhuangding HospitalYantai 264000, Shandong, China
| | - Junqi Yang
- Qingdao University School of MedicineQingdao 266021, Shandong, China
| | - Shuai Liu
- Qingdao University School of MedicineQingdao 266021, Shandong, China
| | - Xiangqian Gong
- Department of Gastrointestinal Surgery, Hepatobiliary Surgery and Thoracic Surgery, Yuhuangding HospitalYantai 264000, Shandong, China
| | - Xiaofeng Yu
- Department of Gastrointestinal Surgery, Hepatobiliary Surgery and Thoracic Surgery, Yuhuangding HospitalYantai 264000, Shandong, China
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20
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Wakabayashi K, Mori F, Kakita A, Takahashi H, Utsumi J, Sasaki H. Analysis of microRNA from archived formalin-fixed paraffin-embedded specimens of amyotrophic lateral sclerosis. Acta Neuropathol Commun 2014; 2:173. [PMID: 25497327 PMCID: PMC4279903 DOI: 10.1186/s40478-014-0173-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 12/01/2014] [Indexed: 12/13/2022] Open
Abstract
Background MicroRNAs (miRNAs) are noncoding small RNAs that regulate gene expression. This study investigated whether formalin-fixed paraffin-embedded (FFPE) specimens from postmortem cases of neurodegenerative disorders would be suitable for miRNA profiling. Results Ten FFPE samples from 6 cases of amyotrophic lateral sclerosis (ALS) and 4 neurologically normal controls were selected for miRNA analysis on the basis of the following criteria for RNA quality: (i) a postmortem interval of less than 6 hours, (ii) a formalin fixation time of less than 4 weeks, (iii) an RNA yield per sample of more than 500 ng, and (iv) sufficient quality of the RNA agarose gel image. An overall RNA extraction success rate was 46.2%. For ALS, a total of 364 miRNAs were identified in the motor cortex, 91 being up-regulated and 233 down-regulated. Target genes were predicted using miRNA bioinformatics software, and the data applied to ontology analysis. This indicated that one of the miRNAs up-regulated in ALS (miR-338-3p) had already been identified in leukocytes, serum, cerebrospinal fluid and frozen spinal cord from ALS patients. Conclusion Although analysis was possible for just under half of the specimens examined, we were able to show that informative miRNA data can be derived from archived FFPE samples from postmortem cases of neurodegenerative disorders. Electronic supplementary material The online version of this article (doi:10.1186/s40478-014-0173-z) contains supplementary material, which is available to authorized users.
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21
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Wang L, Yu J, Xu J, Zheng C, Li X, Du J. The analysis of microRNA-34 family expression in human cancer studies comparing cancer tissues with corresponding pericarcinous tissues. Gene 2014; 554:1-8. [PMID: 25452192 DOI: 10.1016/j.gene.2014.10.032] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 09/12/2014] [Accepted: 10/17/2014] [Indexed: 01/04/2023]
Abstract
Recently many studies have focused on the microRNA-34 (miR-34) family expression in various cancers; nevertheless, the controversial results of these studies still exist in identifying miR-34 members as new biomarkers of cancers. Therefore, we carried out this comprehensive meta-analysis of published studies that compared the miR-34 family expression profiles between cancer tissues and paired neighboring noncancerous tissues to systemically evaluate the findings globally and address the inconsistencies of pertinent literatures. The data included in this article were collected from Embase, PubMed and Web of Science up to December 2013. To overcome the difficulties that many raw data were unavailable and study methods were different, a vote-counting strategy was adopted to identify consistent markers in our analysis. Ultimately, a total of 23 cancers were reported in the 61 eligible studies, of which 46 studies provided fold-change value information. In the consistently reported cancer types, non-small cell lung cancer (NSCLC), glioma and nasopharyngeal carcinoma (NPC) ranked at the top with down-regulated feature. Cervical neoplasm was consistently reported to be over-expressed in the panel of each member of miR-34s. Subgroup analysis of miR-34 family expression demonstrated that colorectal cancer (CRC), gastric cancer (GC), hepatocellular carcinoma (HCC) and prostate cancer (PCa) were most frequently reported with inconsistent regulations. Our meta-analysis showed that miR-34 family members could be expected to become potential diagnostic and prognostic biomarkers in some types of human cancers. Further well-designed and larger sample studies are surely warranted to identify the role of the miR-34 family in the occurrence and development of tumors.
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Affiliation(s)
- Liguang Wang
- Institute of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Shandong University, 324 Jingwu Road, Jinan 250021, PR China
| | - Jianyu Yu
- Department of General Surgery, Chinese People's Liberation Army (PLA) 230th Hospital, Dandong 118000, PR China; Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Shandong University, 324 Jingwu Road, Jinan 250021, PR China
| | - Jun Xu
- Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Shandong University, 324 Jingwu Road, Jinan 250021, PR China
| | - Chunlong Zheng
- Institute of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Shandong University, 324 Jingwu Road, Jinan 250021, PR China
| | - Xiaowei Li
- Institute of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Shandong University, 324 Jingwu Road, Jinan 250021, PR China
| | - Jiajun Du
- Institute of Oncology, Shandong Provincial Hospital Affiliated to Shandong University, Shandong University, 324 Jingwu Road, Jinan 250021, PR China; Department of Thoracic Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Shandong University, 324 Jingwu Road, Jinan 250021, PR China.
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22
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Minn YK, Lee DH, Hyung WJ, Kim JE, Choi J, Yang SH, Song H, Lim BJ, Kim SH. MicroRNA-200 family members and ZEB2 are associated with brain metastasis in gastric adenocarcinoma. Int J Oncol 2014; 45:2403-10. [PMID: 25270520 DOI: 10.3892/ijo.2014.2680] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Accepted: 09/16/2014] [Indexed: 11/06/2022] Open
Abstract
Although the incidence of brain metastasis in gastric cancer is relatively low, its prevalence may increase with improved therapy and longer survival tumors. The molecular mechanisms underlying brain metastases are not well understood. To gain insight into the mechanism of brain metastasis, we studied differences in microRNA (miRNA) expression levels in 8 cases of matched primary gastric adenocarcinoma and brain metastatic adenocarcinoma using the Illumina microRNA microarray chip. We identified 6 upregulated and 2 downregulated miRNAs in all 8 cases simultaneously. Interestingly, 2 out of 8 miRNAs (hsa-miR‑141-3p and hsa-miR-200b-3p) belonged to the miR-200 family. Online microRNA database searching revealed that ZEB2 is the top-ranked target gene for hsa-miR141-3p and hsa-miR-200b-3p, prompting us to focus ZEB2 expression in brain metastatic adenocarcinoma. We confirmed that ZEB2 expression was markedly downregulated in some brain metastatic samples. In addition, decreased ZEB2 expression was noted by western blot analysis of 2 metastatic gastric adenocarcinoma cell types that were derived by in vivo selection following intracardiac injection of gastric cancer cell lines. In conclusion, we demonstrate that expression of miRNA-200 family members and ZEB2 are associated with brain metastases of gastric adenocarcinoma, not only in matched patient samples, but also in metastatic cell lines that were derived by in vivo selection.
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Affiliation(s)
- Yang-Ki Minn
- Department of Neurology, Kangnam Sacred Heart Hospital, Hallym University, Seoul, Republic of Korea
| | - Da Hye Lee
- Department of Pathology, Yonsei University, College of Medicine, Seoul, Republic of Korea
| | - Woo Jin Hyung
- Department of Surgery, Yonsei University, College of Medicine, Seoul, Republic of Korea
| | - Ji Eun Kim
- Department of Pathology, Seoul National University, Boramae Hospital, Seoul, Republic of Korea
| | - Junjeong Choi
- Department of Pathology, Yonsei University, Wonju College of Medicine, Wonju, Republic of Korea
| | - Seung-Ho Yang
- Department of Neurosurgery, St. Vincent Hospital, The Catholic University of Korea, Suwon, Republic of Korea
| | - Hotaek Song
- Department of Radiology and Research Institute of Radiologic Science, Yonsei University, College of Medicine, Seoul, Republic of Korea
| | - Beom Jin Lim
- Department of Pathology, Yonsei University, College of Medicine, Seoul, Republic of Korea
| | - Se Hoon Kim
- Department of Pathology, Yonsei University, College of Medicine, Seoul, Republic of Korea
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Wang Z, Cai Q, Jiang Z, Liu B, Zhu Z, Li C. Prognostic role of microRNA-21 in gastric cancer: a meta-analysis. Med Sci Monit 2014; 20:1668-74. [PMID: 25230738 PMCID: PMC4179621 DOI: 10.12659/msm.892096] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background Mounting evidence shows that microRNAs may be useful as prognostic biomarkers of gastric cancer. The aim of this meta-analysis was to summarize the predictive role of miR-21 for survival in patients with gastric cancer and to verify the association between expression of miR-21 and clinical characteristics. Material/Methods All the eligible studies were searched by PubMed and EMBASE and clinical characteristics and survival results were extracted. Then a meta-analysis was carried out to clarify the prognostic role of the miR-21 expression in different subgroups. Results We included 8 studies dealing with gastric cancer in this meta-analysis. For overall survival, the pooled hazard ratio of higher miR-21 expression in tumor tissue was 2.00 (95% CI: 1.39–2.88, P<0.01), which could significantly predict poorer survival in gastric cancer patients. Importantly, subgroup analysis suggested that higher expression of miR-21 correlated with tumor differentiation 0.42 (95% CI: 0.25–0.70 p<0.01), lymph node metastasis 6.39(95% CI: 3.11–13.14, P<0.01), and TNM stage 0.38 (95% CI: 0.21–0.67, P<0.01). Conclusions This meta-analysis indicates that miR-21 detection has a prognostic value in patients with gastric cancer. In addition, overexpression of miR-21 is associated with worse tumor differentiation, lymph node metastasis, and TNM stage.
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Affiliation(s)
- Zhenqiang Wang
- Department of Surgery, Shanghai Institute of Digestive Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China (mainland)
| | - Qiang Cai
- Department of Surgery, Shanghai Institute of Digestive Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China (mainland)
| | - Zhaoyan Jiang
- Department of Surgery, Shanghai Institute of Digestive Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China (mainland)
| | - Bingya Liu
- Department of Surgery, Shanghai Institute of Digestive Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China (mainland)
| | - Zhenggang Zhu
- Department of Surgery, Shanghai Institute of Digestive Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China (mainland)
| | - Chen Li
- Department of Surgery, Shanghai Institute of Digestive Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China (mainland)
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LI HAILONG, XIE SHOUPIN, LIU XIAOJUN, WU HONGYAN, LIN XINGYAO, GU JING, WANG HUPING, DUAN YONGQIANG. Matrine alters microRNA expression profiles in SGC-7901 human gastric cancer cells. Oncol Rep 2014. [DOI: 10.3892/or_xxxxxxxx] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Kang S, Zhao Y, Hu K, Xu C, Wang L, Liu J, Yao A, Zhang H, Cao F. miR-124 exhibits antiproliferative and antiaggressive effects on prostate cancer cells through PACE4 pathway. Prostate 2014; 74:1095-106. [PMID: 24913567 DOI: 10.1002/pros.22822] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Accepted: 04/17/2014] [Indexed: 01/02/2023]
Abstract
INTRODUCTION PACE4 plays an important role in prostate cancer (PCa) proliferation and aggression, which might provide a useful target against prostate cancer. In this study, we had strived to find some key miRNAs to decrease malignancy and invasiveness of PCa through regulating PACE4 expression. METHODS Clinically pathological analysis of immunohistochemistry/in situ hybridization was carried out to detect the relationship between PACE4 expression/miRNAs and the malignancy of prostate mass. Prostate cell lines (DU145, C4-2, and BPH-1) were cultured for growth curve, immunocytochemistry analysis, colony formation, Matrigel invasion, and transcriptional/translational expression assay of PACE4-related signaling molecules for confirming the relationship. MiRNAs targeting PACE4 were predicted, validated and further-corroborated using bio-software, real-time PCR, luciferase reporter assay and transfection of miRNA mimics and inhibitor. RESULTS It was suggested that PACE4 might reflect the pathological malignancy of prostate lesion from pathology analysis. Moreover, DU145 cells, the highest PACE4-level and related TF expression indicated of the strongest malignancy and invasiveness. It was significantly found that miR-124 was presented with the biggest odd to target PACE4-3'UTR, the capability of decreasing PACE expression and slowing down cell growth and cell invasion. CONCLUSIONS It was clear that PACE4 level was closely associated with malignancy and invasiveness of PCa in vivo or in vitro MiR-124, played a crucial role inhibiting PACE4 transcription thus exhibiting obvious effects of antiproliferation and antiaggression of PCa.
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Affiliation(s)
- Shaosan Kang
- Department of Urinary Surgery, Hebei United University Affiliated Hospital, Tangshan, Hebei, China
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Zhou X, Wang X, Huang Z, Wang J, Zhu W, Shu Y, Liu P. Prognostic value of miR-21 in various cancers: an updating meta-analysis. PLoS One 2014; 9:e102413. [PMID: 25019505 PMCID: PMC4097394 DOI: 10.1371/journal.pone.0102413] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 06/17/2014] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Recently, more and more studies investigated the value of microRNA (miRNA) as a diagnostic or prognostic biomarker in various cancers. MiR-21 was found dysregulated in almost all types of cancers. While the prognostic role of miR-21 in many cancers has been studied, the results were not consistent. METHODS We performed a meta-analysis to investigate the correlation between miR-21 and survival of general cancers by calculating pooled hazard ratios (HR) and 95% confidence intervals (CI). RESULTS The pooled results of 63 published studies showed that elevated miR-21 was a predictor for poor survival of general carcinomas, with pooled HR of 1.91 (95%CI: 1.66-2.19) for OS, 1.42 (95% CI: 1.16-1.74) for DFS and 2.2 (95% CI: 1.64-2.96) for RFS/CSS. MiR-21 was also a prognostic biomarker in the patients who received adjuvant therapy, with pooled HR of 2.4 (95%CI: 1.18-4.9) for OS. CONCLUSIONS Our results showed that miR-21 could act as a significant biomarker in the prognosis of various cancers. Further studies are warranted before the application of the useful biomarker in the clinical.
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Affiliation(s)
- Xin Zhou
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaping Wang
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Clinical Diabetes Centre of Jiangsu Province, Nanjing Medical University, Nanjing, China
| | - Zebo Huang
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jian Wang
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wei Zhu
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- * E-mail: (PL); (WZ)
| | - Yongqian Shu
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Cancer Center of Nanjing Medical University, Nanjing, China
| | - Ping Liu
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Cancer Center of Nanjing Medical University, Nanjing, China
- * E-mail: (PL); (WZ)
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Ishiguro H, Kimura M, Takeyama H. Role of microRNAs in gastric cancer. World J Gastroenterol 2014; 20:5694-5699. [PMID: 24914330 PMCID: PMC4024779 DOI: 10.3748/wjg.v20.i19.5694] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Revised: 12/11/2013] [Accepted: 01/20/2014] [Indexed: 02/06/2023] Open
Abstract
Although gastric cancer (GC) is one of the leading causes of cancer-related death, major therapeutic advances have not been made, and patients with GC still face poor outcomes. The prognosis of GC also remains poor because the molecular mechanisms of GC progression are incompletely understood. MicroRNAs (miRNAs) are noncoding RNAs that are associated with gastric carcinogenesis. Studies investigating the regulation of gene expression by miRNAs have made considerable progress in recent years, and abnormalities in miRNA expression have been shown to be associated with the occurrence and progression of GC. miRNAs contribute to gastric carcinogenesis by altering the expression of oncogenes and tumor suppressors, affecting cell proliferation, apoptosis, motility, and invasion. Moreover, a number of miRNAs have been shown to be associated with tumor type, tumor stage, and patient survival and therefore may be developed as novel diagnostic or prognostic markers. In this review, we discuss the involvement of miRNAs in GC and the mechanisms through which they regulate gene expression and biological functions. Then, we review recent research on the involvement of miRNAs in GC prognosis, their potential use in chemotherapy, and their effects on Helicobacter pylori infections in GC. A greater understanding of the roles of miRNAs in gastric carcinogenesis could provide insights into the mechanisms of tumor development and could help to identify novel therapeutic targets.
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Hu CE, Liu YC, Zhang HD, Huang GJ. JMJD2A predicts prognosis and regulates cell growth in human gastric cancer. Biochem Biophys Res Commun 2014; 449:1-7. [PMID: 24802408 DOI: 10.1016/j.bbrc.2014.04.126] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 04/24/2014] [Indexed: 02/09/2023]
Abstract
A number of JmjC domain-containing histone demethylases have been identified and biochemically characterized in mammalian. JMJD2A is a transcriptional cofactor and enzyme that catalyzes demethylation of histone H3 lysines 9 and 36. Here in this study, we aim to explore the role of JMJD2A in human gastric cancer. Quantitative real-time PCR, Western blot and immunohistochemistry analyses reveal higher expression of JMJD2A in clinical gastric cancer tissues than that in normal gastric mucosa. JMJD2A expression is associated with tumor stage and nodal status, and high level of JMJD2A predicts poor overall and disease-free survival. Univariate and multivariate survival analyses demonstrate that JMJD2A could serve as an independent prognostic factor. Furthermore, we show that inhibition the expression of JMJD2A attenuates the growth and transformation of three lines of gastric cancer cells. Mechanically, JMJD2A knockdown induces apoptosis of gastric cancer cells by up-regulating the expression of pro-apoptotic proteins and by down-regulating anti-apoptotic protein. Finally, we show that JMJD2A level is correlated with the level of the pro-apoptotic microRNA miR-34a in gastric cancer tissues and JMJD2A represses the expression of miR-34a by decreasing its promoter activity. Those findings demonstrate that JMJD2A regulates gastric cancer growth and serves as an independent prognostic factor, and implicate that JMJD2A may be a promising target for intervention.
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Affiliation(s)
- Cheng-En Hu
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Yong-Chao Liu
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Hui-Dong Zhang
- Department of General Surgery, Shanghai Children's Medical Center, Shanghai, China
| | - Guang-Jian Huang
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China.
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Hu CE, Liu YC, Zhang HD, Huang GJ. The RNA-binding protein PCBP2 facilitates gastric carcinoma growth by targeting miR-34a. Biochem Biophys Res Commun 2014; 448:437-42. [PMID: 24796666 DOI: 10.1016/j.bbrc.2014.04.124] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 04/24/2014] [Indexed: 12/31/2022]
Abstract
Gastric carcinoma is the fourth most common cancer worldwide, with a high rate of death and low 5-year survival rate. However, the mechanism underling gastric cancer is still not fully understood. Here in the present study, we identify the RNA-binding protein PCBP2 as an oncogenic protein in human gastric carcinoma. Our results show that PCBP2 is up-regulated in human gastric cancer tissues compared to adjacent normal tissues, and that high level of PCBP2 predicts poor overall and disease-free survival. Knockdown of PCBP2 in gastric cancer cells inhibits cell proliferation and colony formation in vitro, whereas opposing results are obtained when PCBP2 is overexpressed. Our in vivo subcutaneous xenograft results also show that PCBP2 can critically regulate gastric cancer cell growth. In addition, we find that PCBP2-depletion induces apoptosis in gastric cancer cells via up-regulating expression of pro-apoptotic proteins and down-regulating anti-apoptotic proteins. Mechanically, we identify that miR-34a as a target of PCBP2, and that miR-34a is critically essential for the function of PCBP2. In summary, PCBP2 promotes gastric carcinoma development by regulating the level of miR-34a.
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Affiliation(s)
- Cheng-En Hu
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Yong-Chao Liu
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Hui-Dong Zhang
- Department of General Surgery, Shanghai Children's Medical Center, Shanghai, China
| | - Guang-Jian Huang
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China.
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Okumura T, Shimada Y, Moriyama M, Takei Y, Omura T, Sekine S, Nagata T, Shimizu K, Tsukada K. MicroRNA-203 inhibits the progression of esophageal squamous cell carcinoma with restored epithelial tissue architecture in vivo. Int J Oncol 2014; 44:1923-32. [PMID: 24692008 DOI: 10.3892/ijo.2014.2365] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Accepted: 03/11/2014] [Indexed: 11/05/2022] Open
Abstract
MicroRNA (miR)-203 has been shown to induce squamous differentiation of epidermal stem cells through the suppression of p63. The aim of this study was to assess the tumor suppressor effect of miR-203 in esophageal squamous cell carcinoma (ESCC) with focus on the regulation of the cell fate decisions and organization of tumor tissue architecture in vivo. Our investigation establishing stable clones from ESCC cell lines with induced miR-203 expression resulted in significant growth inhibition in a mouse xenograft model. Small foci were observed in xenograft tumors with stratified squamous differentiation in conjunction with restored baso-apical polarity. The expression of the basement membrane protein laminine was localized at the center of the foci and the basal cell marker p75NTR was expressed in the innermost layer. The expression of ki67 and p63 was co-localized at the center layers, while involucrin was expressed in the outer layers. Flow cytometry revealed that the p75NTR-positive cells expressing p63 and Bmi1 were well maintained, while the expression of p63 was suppressed in the p75NTR-negative cells. Our cDNA microarray analysis demonstrated the upregulation of genes involved in regulating tissue architecture, such as BMP-4 and ZO-1 in the mir-203 transfectant. Investigation using surgically removed ESCC specimens revealed that the expression of miR-203 significantly correlated with a favorable prognosis. These results demonstrated that miR-203 regulated both basal and supra-basal cell components to induce differentiation with restored epithelial tissue architecture, leading to significant tumor growth inhibition in vivo. Those results suggest the use of miR-203 as a novel therapeutic and diagnostic target in patients with ESCC.
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Affiliation(s)
- Tomoyuki Okumura
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Yutaka Shimada
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Makoto Moriyama
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Yoshinori Takei
- Department of Nanobio Drug Discovery, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-Ku, Kyoto 606-8501, Japan
| | - Tetsuya Omura
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Shinichi Sekine
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Takuya Nagata
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Kazuharu Shimizu
- Department of Nanobio Drug Discovery, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-Ku, Kyoto 606-8501, Japan
| | - Kazuhiro Tsukada
- Department of Surgery and Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
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Sha M, Ye J, Zhang LX, Luan ZY, Chen YB, Huang JX. Celastrol induces apoptosis of gastric cancer cells by miR-21 inhibiting PI3K/Akt-NF-κB signaling pathway. Pharmacology 2014; 93:39-46. [PMID: 24434352 DOI: 10.1159/000357683] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Accepted: 12/02/2013] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Celastrol, a plant triterpene, has anticancer effects by increase of apoptosis. In the present study, the mechanism of celastrol on gastric cancer cell apoptosis was examined. METHODS The effect of celastrol on PI3K/Akt and the NF-κB signaling pathway was evaluated with Western blot and luciferase reporter assay. miR-21 expression was determined using real-time PCR. miR-21 inhibitor and miR-21 mimic were used to downregulate and upregulate miR-21 expression, respectively. RESULTS It was identified that celastrol was capable of inducing apoptosis of gastric cancer cells, which was mediated via inhibiting the activation of PI3K/Akt and NF-κB. A strong activator of Akt, IGF-1 restored NF-κB activity in cells treated with celastrol. Celastrol could also significantly suppress miR-21 expression. Furthermore, miR-21 inhibitor could decrease phospho-Akt expression and NF-κB activity. Notably, upregulation of miR-21 expression can increase PI3K/Akt and NF-κB activity and decrease apoptosis of gastric cancer cells treated with celastrol, which could be reversed by PI3K inhibitor. CONCLUSIONS Our data revealed that the effect of celastrol on apoptosis was due to miR-21 inhibiting the PI3K/Akt-dependent NF-κB pathway.
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Affiliation(s)
- Min Sha
- Institute of Clinical Medicine, Taizhou People's Hospital, Nantong University of Medicine, Taizhou, China
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MicroRNA expression profiles in human testicular tissues of infertile men with different histopathologic patterns. Fertil Steril 2014; 101:78-86.e2. [DOI: 10.1016/j.fertnstert.2013.09.009] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 09/01/2013] [Accepted: 09/05/2013] [Indexed: 12/14/2022]
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Omura T, Shimada Y, Nagata T, Okumura T, Fukuoka J, Yamagishi F, Tajika S, Nakajima S, Kawabe A, Tsukada K. Relapse-associated microRNA in gastric cancer patients after S-1 adjuvant chemotherapy. Oncol Rep 2013; 31:613-8. [PMID: 24317477 DOI: 10.3892/or.2013.2900] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 11/18/2013] [Indexed: 11/06/2022] Open
Abstract
S-1 has been recommended as adjuvant chemotherapy in patients after curative surgery for gastric cancer. However, some patients suffer recurrence even after S-1 adjuvant chemotherapy. The present study was conducted to find a predictive marker of the efficacy of S-1 adjuvant chemotherapy. We examined the microRNA (miRNA) expression of 35 patients who underwent S-1 adjuvant chemotherapy after curative surgery (R0) for pathological stage II or III gastric cancer. miRNAs were extracted from formalin-fixed, paraffin-embedded specimens for analysis and miRNA expression was examined using miRNA oligo chips. Fifteen patients relapsed and 20 did not over 5 years. Five miRNAs (miR-92b, 422a, 4732-5p, 4758-3p and 221) were highly expressed according to the tumor/normal (T/N) ratio in the patients who relapsed but not in those who did not relapse (P-value <0.05) by microarray analysis. If tumors showed high expression of 4 miRNAs (miR-92b, 422a, 4732-5p and 4758-3p) their positive predictive value of relapse was 93.8% and negative predictive value was 92.3%. In this case, their disease-free survival rate and overall survival rate were very poor. Our findings indicate that miR-92b, miR‑422a, miR-4732-5p and miR-4758-3p are closely associated with relapse following S-1 adjuvant chemotherapy in gastric cancer.
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Affiliation(s)
- Tetsuya Omura
- Department of Surgery and Science, University of Toyama, Toyama 930‑0194, Japan
| | - Yutaka Shimada
- Department of Surgery and Science, University of Toyama, Toyama 930‑0194, Japan
| | - Takuya Nagata
- Department of Surgery and Science, University of Toyama, Toyama 930‑0194, Japan
| | - Tomoyuki Okumura
- Department of Surgery and Science, University of Toyama, Toyama 930‑0194, Japan
| | - Junya Fukuoka
- Department of Surgical Pathology, University of Toyama, Toyama 930‑0194, Japan
| | - Fuminori Yamagishi
- Department of Surgery, Itoigawa General Hospital, Itoigawa, Niigata 941-8502, Japan
| | - Sadakatsu Tajika
- Department of Surgery, Saiseikai Toyama Hospital, Toyama 931-8533, Japan
| | - Sanae Nakajima
- Department of Surgery, Murakami Memorial Hospital, Asahi University, Gifu 500-8523, Japan
| | - Atsushi Kawabe
- Department of Surgery, Murakami Memorial Hospital, Asahi University, Gifu 500-8523, Japan
| | - Kazuhiro Tsukada
- Department of Surgery and Science, University of Toyama, Toyama 930‑0194, Japan
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Sekine S, Shimada Y, Nagata T, Sawada S, Yoshioka I, Matsui K, Moriyama M, Omura T, Osawa S, Shibuya K, Hashimoto I, Watanabe T, Hojo S, Hori R, Okumura T, Yoshida T, Tsukada K. Role of aquaporin-5 in gallbladder carcinoma. Eur Surg Res 2013; 51:108-17. [PMID: 24217644 DOI: 10.1159/000355675] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 09/17/2013] [Indexed: 01/04/2023]
Abstract
BACKGROUND/PURPOSE Aquaporins (AQPs) are important in controlling bile formation. However, the exact role in human gallbladder carcinogenesis has not yet been defined. METHODS AQP-5-expressing gallbladder carcinoma (GBC) cell lines (NOZ) were transfected with anti-AQP-5 small interfering RNA (siRNA). Growth, migration, invasion assay, and drug susceptibility tests were performed. Next, microRNA (miRNA) expression was analyzed by miRNA oligo chip (3D-Gene®). AQP-5 and AQP-5-related miRNA target gene expressions were also analyzed using tissue microarray (TMA) in 44 GBC samples. RESULTS Treatment with AQP-5 siRNA decreased cell proliferation, migration, and invasion. On the other hand, those cells increased IC50 of gemcitabine. By performing miRNA assays, miR-29b, -200a, and -21 were shown to be highly overexpressed in cells treated with AQP-5 siRNA NOZ. When focusing on miR-21, phosphatase and tensin homolog (PTEN) was found to be a target of miR-21. In the TMA, AQP-5/PTEN coexpression was significantly associated with the depth of invasion and MIB-1 index (p = 0.003, 0.010). Survival of patients with a high AQP-5/PTEN coexpression was longer than that of patients with a low coexpression (p = 0.003). CONCLUSIONS Our result suggested that miR-21 and PTEN may contribute to the role of AQP-5 in GBC. AQP-5 and PTEN cascades are favorable biomarkers of GBC.
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Affiliation(s)
- S Sekine
- Department of Surgery and Science, University of Toyama, Toyama, Japan
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JIAO FENG, JIN ZILIANG, WANG LEI, WANG LIWEI. Research and clinical applications of molecular biomarkers in gastrointestinal carcinoma (Review). Biomed Rep 2013; 1:819-827. [PMID: 24649035 PMCID: PMC3917016 DOI: 10.3892/br.2013.158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Accepted: 08/12/2013] [Indexed: 11/06/2022] Open
Abstract
Gastrointestinal (GI) carcinoma is a common malignant disease worldwide. Its development and progression is a multistage process involving a multifactorial etiology. Although the detailed mechanisms of the development of GI carcinoma remain controversial, the elucidation of its molecular biology over the last few years has resulted in a better perspective on its epidemiology, carcinogenesis and pathogenesis. More significantly, it is currently possible to use biological indicators or biomarkers in differential diagnosis, prognostic evaluation and specific clinical interventions. In this review, we aimed to describe the biomarkers of pathogenesis, invasion, metastasis and prognosis of GI carcinoma and discuss their potential clinical applications. The majority of these biomarkers, such as tumor-associated antigens, oncogenes and tumor suppressor genes, metastasis-associated genes, cell adhesion molecules, cytokines, growth factors and microRNAs, are currently broadly applicable.
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Affiliation(s)
- FENG JIAO
- Department of Oncology, The First People’s Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 201620, P.R. China
| | - ZILIANG JIN
- Department of Oncology, The First People’s Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 201620, P.R. China
| | - LEI WANG
- Department of Oncology, The First People’s Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 201620, P.R. China
| | - LIWEI WANG
- Department of Oncology, The First People’s Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 201620, P.R. China
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Abstract
Considering the high mortality rates and the unfavorable prognosis of gastric cancer (GC) as well as the lack of a clinical predictive marker, which is sufficiently sensitive to GC, it is of great significance to investigate new sensitive and specific markers for GC diagnosis. MicroRNAs (miRNAs) could be a practical form of potential biomarkers in the diagnosis of human disease, and they are confirmed to be closely associated with GC. In this review, we discuss the recent research results that indicate the feasibility and clinical applications of miRNAs in GC. Although several challenges remain to be addressed, miRNAs have the potential to be applied in the diagnosis of GC.
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Valladares-Ayerbes M, Reboredo M, Medina-Villaamil V, Iglesias-Díaz P, Lorenzo-Patiño MJ, Haz M, Santamarina I, Blanco M, Fernández-Tajes J, Quindós M, Carral A, Figueroa A, Antón-Aparicio LM, Calvo L. Circulating miR-200c as a diagnostic and prognostic biomarker for gastric cancer. J Transl Med 2012; 10:186. [PMID: 22954417 PMCID: PMC3494541 DOI: 10.1186/1479-5876-10-186] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Accepted: 08/31/2012] [Indexed: 02/08/2023] Open
Abstract
Background MicroRNAs are aberrantly expressed and correlate with tumourigenesis and the progression of solid tumours. The miR-200 family determines the epithelial phenotype of cancer cells and regulates invasiveness and migration. Thus, we hypothesised that the quantitative detection of the miR-200 family as epithelial-specific microRNAs in the blood could be a useful clinical biomarker for gastric cancer (GC). Methods We initially validated the expression levels of miR-200a, 200b, 200c and 141 in GC cell lines (n = 2) and blood from healthy controls (n = 19) using real-time quantitative reverse transcription PCR (qRT-PCR). The microarray expression profiles of the miR-200 family in 160 paired samples of non-tumour gastric mucosae and GC were downloaded through ArrayExpress and analysed. MiR-200c was selected for clinical validation. The qRT-PCR prospective assessment of miR-200c was performed using 67 blood samples (52 stage I-IV GC patients and 15 controls); the area under the receiver operating characteristic curve (AUC-ROC) was estimated. The Kaplan-Meier and Breslow-Wilcoxon tests were used to assess the correlation of miR-200c with overall and progression-free survival (OS and PFS). Multivariate analyses were performed using the Cox model. Results The miR-200c blood expression levels in GC patients were significantly higher than in normal controls (p = 0.018). The AUC-ROC was 0.715 (p = 0.012). The sensitivity, specificity and accuracy rates of 65.4%, 100% and 73.1%, respectively, were observed. The levels of miR-200c in the blood above the cutoff defined by the ROC curve was found in 17.6% of stage I-II GC patients, 20.6% of stage III patients and 67.7% of stage IV patients (p < 0.001). The miR-200c expression levels were not associated with clinical or pathological characteristics or recent surgical procedures. There was a correlation (p = 0.016) with the number of lymph node metastases and the increased expression levels of miR-200c in blood were significantly associated with a poor OS (median OS, 9 vs 24 months; p = 0.016) and PFS (median PFS, 4 vs 11 months; p = 0.044). Multivariate analyses confirmed that the upregulation of miR-200c in the blood was associated with OS (HR = 2.24; p = 0.028) and PFS (HR = 2.27; p = 0.028), independent of clinical covariates. Conclusions These data suggest that increased miR-200c levels are detected in the blood of gastric cancer patients. MiR-200c has the potential to be a predictor of progression and survival.
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Affiliation(s)
- Manuel Valladares-Ayerbes
- Medical Oncology Department, La Coruña University Hospital, Servicio Galego de Saúde (SERGAS), As Xubias, 84, La Coruña, PC, 15006, Spain.
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