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dos Santos EC, Rohan P, Binato R, Abdelhay E. Integrated Network Analysis of microRNAs, mRNAs, and Proteins Reveals the Regulatory Interaction between hsa-mir-200b and CFL2 Associated with Advanced Stage and Poor Prognosis in Patients with Intestinal Gastric Cancer. Cancers (Basel) 2023; 15:5374. [PMID: 38001634 PMCID: PMC10670725 DOI: 10.3390/cancers15225374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/07/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
Intestinal gastric cancer (IGC) carcinogenesis results from a complex interplay between environmental and molecular factors, ultimately contributing to disease development. We used integrative bioinformatic analysis to investigate IGC high-throughput molecular data to uncover interactions among differentially expressed genes, microRNAs, and proteins and their roles in IGC. An integrated network was generated based on experimentally validated microRNA-gene/protein interaction data, with three regulatory circuits involved in a complex network contributing to IGC progression. Key regulators were determined, including 23 microRNA and 15 gene/protein hubs. The regulatory circuit networks were associated with hallmarks of cancer, e.g., cell death, apoptosis and the cell cycle, the immune response, and epithelial-to-mesenchymal transition, indicating that different mechanisms of gene regulation impact similar biological functions. Altered expression of hubs was related to the clinicopathological characteristics of IGC patients and showed good performance in discriminating tumors from adjacent nontumor tissues and in relation to T stage and overall survival (OS). Interestingly, expression of upregulated hub hsa-mir-200b and its downregulated target hub gene/protein CFL2 were related not only to pathological T staging and OS but also to changes during IGC carcinogenesis. Our study suggests that regulation of CFL2 by hsa-miR-200b is a dynamic process during tumor progression and that this control plays essential roles in IGC development. Overall, the results indicate that this regulatory interaction is an important component in IGC pathogenesis. Also, we identified a novel molecular interplay between microRNAs, proteins, and genes associated with IGC in a complex biological network and the hubs closely related to IGC carcinogenesis as potential biomarkers.
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Affiliation(s)
- Everton Cruz dos Santos
- Stem Cell Laboratory, Division of Specialized Laboratories, Instituto Nacional de Câncer (INCA), Rio de Janeiro 20230-130, RJ, Brazil; (P.R.); (R.B.); (E.A.)
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2
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Klicka K, Grzywa TM, Mielniczuk A, Klinke A, Włodarski PK. The role of miR-200 family in the regulation of hallmarks of cancer. Front Oncol 2022; 12:965231. [PMID: 36158660 PMCID: PMC9492973 DOI: 10.3389/fonc.2022.965231] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/04/2022] [Indexed: 11/16/2022] Open
Abstract
MiRNAs are short non-coding RNAs that regulate gene expression post-transcriptionally contributing to the development of different diseases including cancer. The miR-200 family consists of five members, miR-200a, miR-200b, miR-200c, miR-141, and miR-429. Their expression is dysregulated in cancer tissue and their level is altered in the body fluids of cancer patients. Moreover, the levels of miR-200 family members correlate with clinical parameters such as cancer patients' survival which makes them potentially useful as diagnostic and prognostic biomarkers. MiRNAs can act as either oncomiRs or tumor suppressor miRNAs depending on the target genes and their role in the regulation of key oncogenic signaling pathways. In most types of cancer, the miR-200 family acts as tumor suppressor miRNA and regulates all features of cancer. In this review, we summarized the expression pattern of the miR-200 family in different types of cancer and their potential utility as biomarkers. Moreover, we comprehensively described the role of miR-200 family members in the regulation of all hallmarks of cancer proposed by Hanahan and Weinberg with the focus on the epithelial-mesenchymal transition, invasiveness, and metastasis of tumor cells.
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Affiliation(s)
- Klaudia Klicka
- Department of Methodology, Medical University of Warsaw, Warsaw, Poland
- Doctoral School, Medical University of Warsaw, Warsaw, Poland
| | - Tomasz M. Grzywa
- Department of Methodology, Medical University of Warsaw, Warsaw, Poland
- Department of Immunology, Medical University of Warsaw, Warsaw, Poland
- Laboratory of Experimental Medicine, Medical University of Warsaw, Warsaw, Poland
| | | | - Alicja Klinke
- Department of Methodology, Medical University of Warsaw, Warsaw, Poland
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3
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Ahadi A. A systematic review of microRNAs as potential biomarkers for diagnosis and prognosis of gastric cancer. Immunogenetics 2021; 73:155-161. [PMID: 33399935 DOI: 10.1007/s00251-020-01201-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 12/10/2020] [Indexed: 02/08/2023]
Abstract
Gastric cancer (GC) is the third leading cause of global cancer morbidity and mortality. One of the significant challenges in GC treatment is that most GC patients are diagnosed with advanced-stage disease due to the lack of suitable biomarkers. Recent studies have shown that microRNAs (miRNAs) can acts as a potential biomarker in GC diagnosis and prognosis. I performed a systematic review of published miRNA studies in GC, which includes the miRNA expression profiles between GC tissues and normal tissues and also miRNA studies to evaluate their potential value in the diagnosis and prognosis of GC. Among the studies, upregulation of miR-21, miR-106b, miR-25, miR-214, miR-18a, miR-191, and miR-93 and downregulation of miR-375, miR-148a, miR-92, miR-155, and miR-564 were observed in GC tissues. In evaluating of diagnosis value of miRNAs, the study was performed on a combined miRNA include miR-21, miR-93, miR-106a, and miR-106b indicated the panel of these miRNAs have the highest AUC 0.887 to discriminate GC patients from healthy. Also, miR-940 with a sensitivity of 81.25% and specificity of 98.57% may be used for diagnostic biomarkers for GC. Finally, the pooled prognostic result of miR-21 for hazard ratios (HR) was 1.260 (95% CI 0.370-4.330, P < 0.001), showing that miR-21 could predict poor survival in GC patients. This systematic review can confirm that we need to find a miRNA or a panel of miRNAs with high sensitivity and specificity for further exploration to investigate a better diagnostic or therapeutic tool for personalized management of GC patients.
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Affiliation(s)
- Alireza Ahadi
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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4
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Choi JM, Kim SG, Yang HJ, Lim JH, Cho NY, Kim WH, Kim JS, Jung HC. Helicobacter pylori Eradication Can Reverse the Methylation-Associated Regulation of miR-200a/b in Gastric Carcinogenesis. Gut Liver 2020; 14:571-580. [PMID: 31887809 PMCID: PMC7492500 DOI: 10.5009/gnl19299] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/21/2019] [Accepted: 10/23/2019] [Indexed: 01/09/2023] Open
Abstract
Background/Aims Epigenetic change is one of the mechanisms that regulates the expression of microRNAs (miRNAs) and is known to play a role in Helicobacter pylori-associated gastric carcinogenesis. We aimed to evaluate the epigenetic changes of miR-200a/b in H. pylori-associated gastric carcinogenesis and restoration after eradication. Methods The expression and methylation levels of miR-200a/b were evaluated in gastric cancer (GC) cell lines, human gastric mucosa of H. pylori-negative and -positive controls, and H. pylori-positive GC patients. Next, the changes in the expression and methylation levels of miR-200a/b were compared between H. pylori-eradication and H. pylori-persistence groups at 6 months. Real-time reverse transcription-polymerase chain reaction was conducted to investigate the miRNA expression levels, and MethyLight was performed to assess the methylation levels. Results In the GC cell lines, the level of miR-200a/b methylation decreased and the level of expression increased after demethylation. In the human gastric mucosa, the miR-200a/b methylation levels increased in the following group order: H. pylori-negative control group, H. pylori-positive control group, and H. pylori-positive GC group. Conversely, the miR-200a/b expression levels decreased in the same order. In the H. pylori-persistence group, no significant changes were observed in the methylation and expression levels of miR-200a/b after 6 months, whereas the level of methylation decreased and the level of expression of miR-200a/b increased significantly 6 months in the H. pylori-eradication group. Conclusions Epigenetic alterations of miR-200a/b may be implicated in H. pylori-induced gastric carcinogenesis. This field defect for cancerization is suggested to be improved by H. pylori eradication.
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Affiliation(s)
- Ji Min Choi
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Sang Gyun Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Hyo-Joon Yang
- Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Joo Hyun Lim
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Nam-Yun Cho
- Laboratory of Epigenetics, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Woo Ho Kim
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Joo Sung Kim
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea.,Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Hyun Chae Jung
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
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5
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Qu X, Zhao L, Zhang R, Wei Q, Wang M. Differential microRNA expression profiles associated with microsatellite status reveal possible epigenetic regulation of microsatellite instability in gastric adenocarcinoma. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:484. [PMID: 32395528 PMCID: PMC7210178 DOI: 10.21037/atm.2020.03.54] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Background Although microsatellite instability (MSI) is a powerful predictive biomarker for the efficacy of immunotherapy, the mechanism of MSI in sporadic gastrointestinal cancer is not fully understood. However, epigenetics, particularly microRNAs, has been suggested as one of the main regulators that contribute to the MSI formation. Methods We used microRNA expression data of 386 gastric adenocarcinoma samples from The Cancer Genome Atlas (TCGA) database to identify differential microRNA expression profiles by different MSI status. We also obtained putative common target genes of the top differential microRNAs with miRanda online tools, and we analyzed these data by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes pathway enrichment (KEGG). Results We found that 56 and 67 gastric adenocarcinoma samples were positive for low and high MSI, respectively, and that a high MSI status was associated with age, sex and subregion (P=0.049, 0.014 and 0.007, respectively). In the 67 samples with a high MSI status, expression levels of 14 microRNAs were upregulated but five microRNAs were downregulated as assessed by the fold change (FC), compared with that of the 56 samples with a low MSI status (P<0.05, |FC| >2). Further analysis suggested that the expression of miR-210-3p, miR-582-3p, miR-30a-3p and miR-105-5p predicted a high MSI status (P=4.93×10−10, 5.63×10−10, 3.23×10−9 and 7.64×10−4, respectively). Regulation of the transcription pathways ranked the top of lists from both GO and KEGG analyses, and these microRNAs might regulate DNA damage-repair genes that were also associated with a high MSI status. Conclusions MiR-30a-3p and miR-105-5p are potential biomarkers for the MSI-H gastric adenocarcinoma, possibly by altering expression of DNA damage-repair genes.
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Affiliation(s)
- Xiaofei Qu
- Cancer institute, Fudan University Shanghai Cancer Center, Shanghai 200032, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Liqin Zhao
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China.,Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, China
| | - Ruoxin Zhang
- Cancer institute, Fudan University Shanghai Cancer Center, Shanghai 200032, China.,Department of Epidemiology and Biostatistics, Fudan University School of Public Health, Shanghai 200032, China
| | - Qingyi Wei
- Cancer institute, Fudan University Shanghai Cancer Center, Shanghai 200032, China.,Duke Cancer Institute, Duke University Medical Center, Durham, NC, USA.,Department of Population Health Sciences, Duke University School of Medicine, Durham, NC, USA
| | - Mengyun Wang
- Cancer institute, Fudan University Shanghai Cancer Center, Shanghai 200032, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
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6
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Rossi T, Tedaldi G, Petracci E, Abou Khouzam R, Ranzani GN, Morgagni P, Saragoni L, Monti M, Calistri D, Ulivi P, Molinari C. E-cadherin Downregulation and microRNAs in Sporadic Intestinal-Type Gastric Cancer. Int J Mol Sci 2019; 20:ijms20184452. [PMID: 31509966 PMCID: PMC6769612 DOI: 10.3390/ijms20184452] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 09/03/2019] [Accepted: 09/05/2019] [Indexed: 12/24/2022] Open
Abstract
CDH1 gene, encoding E-cadherin, is a tumor suppressor gene frequently altered in gastric cancers (GCs) of both diffuse (DGC) and intestinal (IGC) histotypes, albeit through different mechanisms. The study aimed to characterize CDH1 expression in sporadic IGC and to investigate whether microRNAs (miRs) are involved in its transcriptional control. We evaluated CDH1 expression by quantitative real-time PCR (RT-qPCR) in 33 IGC patients and found a significant downregulation in tumor tissues compared to normal counterparts (p-value = 0.025). Moreover, 14 miRs, predicted to be involved in CDH1 regulation in both a direct and indirect manner, were selected and analyzed by RT-qPCR in an independent case series of 17 IGCs and matched normal tissues. miR-101, miR-26b, and miR-200c emerged as significantly downregulated and were confirmed in the case series of 33 patients (p-value < 0.001). Finally, we evaluated EZH2 expression, a target of both miR-101 and miR-26b, which showed significant upregulation in IGCs (p-value = 0.005). A significant inverse correlation was observed between EZH2 overexpression and CDH1, miR-101, and miR-26b levels (p-value < 0.001). Our results reinforce the link between CDH1 and IGC, highlighting the role of miRs in its transcriptional control and improving our understanding of GC subtypes and biomarkers.
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Affiliation(s)
- Tania Rossi
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014 Meldola, Italy.
| | - Gianluca Tedaldi
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014 Meldola, Italy.
| | - Elisabetta Petracci
- Unit of Biostatistics and Clinical Trials, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014 Meldola, Italy.
| | - Raefa Abou Khouzam
- Department of Biology and Biotechnology, University of Pavia, 27100 Pavia, Italy.
| | | | - Paolo Morgagni
- General and Oncologic Surgery, Department of Surgery, G.B. Morgagni L.Pierantoni General Hospital, AUSL Romagna, 47121 Forlì, Italy.
| | - Luca Saragoni
- Department of Pathology, AUSL Romagna, Morgagni-Pierantoni Hospital, 47121 Forlì, Italy.
| | - Manlio Monti
- Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014 Meldola, Italy.
| | - Daniele Calistri
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014 Meldola, Italy.
| | - Paola Ulivi
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014 Meldola, Italy.
| | - Chiara Molinari
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014 Meldola, Italy.
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7
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The expression level changes of microRNAs 200a/205 in the development of invasive properties in gastric cancer cells through epithelial-mesenchymal transition. Eur J Pharmacol 2019; 857:172426. [PMID: 31150646 DOI: 10.1016/j.ejphar.2019.172426] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 05/26/2019] [Accepted: 05/27/2019] [Indexed: 12/17/2022]
Abstract
EMT (Epithelial-Mesenchymal Transition) is a highly regulated process that results in cancer progression. MicroRNA plays a significant role in the regulation of EMT through tight control of the transcription factors. In this study, we focus on miR-200a/205 as a factor involved in the control of the EMT process in gastric cancer cells. In this sense, gastric adenocarcinoma cell lines were used to induce EMT process. For characterization of EMT process, the mRNA levels of E-cadherin, Vimentin, β-catenin, ZEB1 and Snail were measured by real time PCR. In addition, Western blot approach was adopted to determine the protein levels of these EMT markers. Transwell assay revealed migration and invasion property of gastric cancer cell after EMT induction. To analyze alteration amount of microRNAs, RT-PCR was applied. Our results confirmed the establishment of in vitro EMT model. In vitro study showed a significant negative correlation between the expression of miR-200a (P = 0.001) and expression level of EMT markers. Nevertheless, miR-205 did not show any significant results in correlation with EMT in AGS cell line. All in vitro results also were validated in gastric cancer tissue samples. Based on our findings from gastric cancer sample patients and in vitro results, miR-200a is down regulated. Therefore, in further investigation, miR-200a could be used as a candidate to prevent the invasive properties of gastric cancer through the EMT process.
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8
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Funamizu N, Lacy CR, Kamada M, Yanaga K, Manome Y. MicroRNA-200b and -301 are associated with gemcitabine response as biomarkers in pancreatic carcinoma cells. Int J Oncol 2019; 54:991-1000. [PMID: 30628651 DOI: 10.3892/ijo.2019.4676] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 11/13/2018] [Indexed: 11/05/2022] Open
Abstract
Chemotherapy resistance (congenital or acquired) is one of the principal challenges for the treatment of pancreatic carcinoma. Recent evidence has demonstrated that epithelial to mesenchymal transition (EMT) is associated with chemoresistance in pancreatic carcinoma cells. However, the molecular mechanism underlying the development of chemoresistance remains unknown, and limited therapeutic options are available. Therefore, to anticipate individual chemosensitivity or acquired chemoresistance for patients with pancreatic carcinoma, predictive biomarkers are urgently required. Extensive evidence suggests that microRNAs (miRNAs) serve a crucial role in regulating EMT. The aim of this study was to examine the potential role of miRNA (miR)‑200b and miR‑301 in predicting the chemo‑responses to treatment for pancreatic carcinoma. The present results demonstrate that miR‑200b expression predicted chemo‑sensitivity and may have potential as a biomarker. In six different pancreatic carcinoma cell lines (Capan‑1, Capan‑2, Panc‑1, MIAPaCa‑2, BxPC‑3 and PL45 cells), the expression of miR‑200b correlated positively with chemosensitivity. Moreover, the enhanced expression of miR‑200b increased chemosensitivity and induced mesenchymal to epithelial transition. Conversely, miR‑301 modulated gemcitabine resistance and induced EMT through the downregulation of cadherin 1 expression. In addition, gemcitabine‑resistant cells (Capan‑2 and Panc‑1) exhibited upregulated miR‑301 expression and downregulated gemcitabine‑induced apoptosis. In summary, these two miRNAs may serve roles as biomarkers in pancreatic carcinoma, miR‑200b expression may predict chemosensitivity, and elevated miR‑301 expression may have potential applications in the prediction of acquired gemcitabine resistance.
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Affiliation(s)
- Naotake Funamizu
- Department of Surgery, The Jikei University School of Medicine, Tokyo 105-8461, Japan
| | - Curtis Ray Lacy
- Howard University School of Medicine, Washington DC 20059, USA
| | - Minori Kamada
- Department of Molecular Cell Biology, The Jikei University School of Medicine, Tokyo 105-8461, Japan
| | - Katsuhiko Yanaga
- Department of Surgery, The Jikei University School of Medicine, Tokyo 105-8461, Japan
| | - Yoshinobu Manome
- Department of Molecular Cell Biology, The Jikei University School of Medicine, Tokyo 105-8461, Japan
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9
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Wang J, Zhang H, Zhou X, Wang T, Zhang J, Zhu W, Zhu H, Cheng W. Five serum-based miRNAs were identified as potential diagnostic biomarkers in gastric cardia adenocarcinoma. Cancer Biomark 2019; 23:193-203. [PMID: 30198863 DOI: 10.3233/cbm-181258] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Circulating microRNAs (miRNAs) have been implicated as novel biomarkers for various types of cancers. The aim of the study is to identify serum miRNAs with potential in detecting gastric cardia adenocarcinoma (GCA). METHODS A three-phase study was designed with 102 GCA patients and 84 cancer-free controls. In the screening phase (3 GCA pools vs. 1 normal control (NC) pool), a total of 35 miRNAs were identified using quantitative reverse transcription polymerase chain reaction (qRT-PCR) based Exiqon panel. Subsequently, these miRNAs were further assessed by qRT-PCR in the training phase (30 GCAs vs. 30 NCs) and testing phase (72 GCAs vs. 54 NCs). Finally, the expression levels of the identified miRNAs were assessed in GCA tissues and exosomes. RESULTS Five up-regulated miRNAs (miR-200a-3p, miR-296-5p, miR-132-3p, miR-485-3p and miR-22-5p) were identified in serum of the GCA patients compared with NCs. The areas under the receiver operating characteristic curve (AUCs) of the five-miRNA panel were 0.766 and 0.724 for the training and testing phases, respectively. In addition, miR-200a-3p, miR-296-5p, miR-485-3p and miR-22-5p were significantly up-regulated in GCA tissues. However, none of the miRNAs in the exosomes showed different expression between GCA patients and NCs. CONCLUSIONS We identified a five-miRNA panel in peripheral serum samples as a non-invasive biomarker in detection of GCA.
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Affiliation(s)
- Juan Wang
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China.,Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China
| | - Huo Zhang
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China.,Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China
| | - Xin Zhou
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China.,Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China
| | - Tongshan Wang
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China
| | - JinYing Zhang
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China
| | - Wei Zhu
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China
| | - Hong Zhu
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China
| | - Wenfang Cheng
- Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China
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Jeddi F, Alipour S, Najafzadeh N, Dadashpour M, Pouremamali F, Sadeghi MR, Samadi N, Soozangar N, Khamaneh AM. Reduced Levels of miR-28 and miR-200a Act as Predictor Biomarkers of Aggressive Clinicopathological Characteristics in Gastric Cancer Patients. Galen Med J 2019; 8:e1329. [PMID: 34466494 PMCID: PMC8344053 DOI: 10.31661/gmj.v8i0.1329] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 09/11/2018] [Accepted: 10/25/2018] [Indexed: 12/27/2022] Open
Abstract
Background: MicroRNAs (miRNAs) play critical roles in different pathological processes including cancer development and progression. To find novel molecular diagnostic and prognostic markers and promising therapeutic tools for gastric cancer (GC), we aimed to investigate the relationship of the expression levels of miR–28–5p or miR–200a–3p with the clinicopathological criteria and to explore their impacts on the progression of human GC. Materials and Methods: Quantitative RT–PCR was performed to analyze miR–28 and miR–200a expression in 60 GC and 60 non–GC tissue samples. Result: Our results revealed that the expressions of miR–200a and miR–28 were significantly downregulated in GC in comparison with non– GC tissues. Tumors with low miR–28 expression had larger tumor size, more advanced histological grade, and a higher incidence of lymph node and distal metastasis than the tumors with high miR–28 expressions. Furthermore, receiver operating characteristic (ROC) analyses demonstrate that the expression of miR–28 is a predictive biomarker allows predicting the histological grade, tumor size, and occurrence of nodal and distal metastases. We also found a significant inverse association between miR–200a expression and the rate of lymph node metastasis (p = 0.010, r = –0.334). Conclusion: Our findings suggest that the miR–28 and miR–200a have tumor–suppressor functions and may be considered as potential biomarkers for gastric cancer diagnosis and prognosis.
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Affiliation(s)
- Farhad Jeddi
- Research Laboratory for Embryology and Stem Cells, Department of Anatomical Sciences and Pathology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Shahriar Alipour
- Department of Biochemistry, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Nowruz Najafzadeh
- Research Laboratory for Embryology and Stem Cells, Department of Anatomical Sciences and Pathology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mehdi Dadashpour
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farhad Pouremamali
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Reza Sadeghi
- Department of Molecular Medicine, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nasser Samadi
- Department of Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Narges Soozangar
- Research Laboratory for Embryology and Stem Cells, Department of Anatomical Sciences and Pathology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
- Correspondence to: Narges Soozangar, Research Laboratory for Embryology and Stem Cells, Department of Anatomical Sciences and Pathology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran Telephone Number: +989166910356 Email Address :
| | - Amir Mahdi Khamaneh
- Department of Molecular Medicine, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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11
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Li W, Jia MX, Deng J, Wang JH, Lin QL, Tang JX, Zeng XX, Cai F, Ma L, Su W, Liu XY, Liu C, Wang SS, Zhou LY. Down-regulation of microRNA-200b is a potential prognostic marker of lung cancer in southern-central Chinese population. Saudi J Biol Sci 2019; 26:173-177. [PMID: 30622423 PMCID: PMC6319082 DOI: 10.1016/j.sjbs.2018.08.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 08/17/2018] [Accepted: 08/22/2018] [Indexed: 12/30/2022] Open
Abstract
MicroRNAs (miRNAs) may regulate diverse biological processes and play an important role in cancer. And MiRNAs have been proposed as a useful tool for lung cancer diagnosis and therapeutics in cancer. The purpose of the present study was to investigate the association among the expression level of mature miR-200b-5p in peripheral blood and the risk of lung cancer and clinic pathological characteristics. This case-control study included 24 patients with lung cancer and 12 healthy controls. MiR-200b expression was deleted using real-time PCR. and the miR-200b expression of normal controls was significantly higher than that in lung cancer patients (1732.13 pg/mL vs 881.67 pg/mL, P < 0.05), no difference with age, sex, tissue type and clinical stage of lung cancer patients (P > 0.05). Furthermore, miR-200b expression level fluctuated with tumor progression in lung cancer, and there was highly significant for clinical stage II compared with the clinical stage III (P < 0.05). In addition, the down-regulation of miR-200b showed a highly discriminative receiver operating characteristic (ROC) curve profile, clearly distinguishing cancer patients from cancer-free subjects with an area under the ROC curve (AUROC) of 0.87. The detection of miR-200b expression yielded 83.30% sensitivity and 100.00% specificity in the diagnosis of lung cancer. Therefore, these findings suggested that miR-200b may be used as a marker for the detection and diagnosis of lung cancer in peripheral blood.
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Affiliation(s)
- Wen Li
- Key Laboratory of Biological Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, China.,National Engineering Laboratory for Rice and Byproduct s Deep Processing, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Ming Xi Jia
- Key Laboratory of Biological Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Jing Deng
- Key Laboratory of Biological Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, China.,National Engineering Laboratory for Rice and Byproduct s Deep Processing, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.,Key Laboratory of Advanced Packaging Materials and Technology, College of Packaging and Material Engineering, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Jian Hui Wang
- School of Chemistry and Bioengineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Qin Lu Lin
- National Engineering Laboratory for Rice and Byproduct s Deep Processing, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Jian Xin Tang
- Key Laboratory of Biological Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Xiao Xi Zeng
- Key Laboratory of Biological Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Fang Cai
- School of Foreign Language, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Liang Ma
- Key Laboratory of Biological Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Wei Su
- Key Laboratory of Biological Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Xue Ying Liu
- Key Laboratory of Biological Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Cun Liu
- Key Laboratory of Biological Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Sha Sha Wang
- Key Laboratory of Biological Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, China
| | - Li Yi Zhou
- Key Laboratory of Biological Nanomaterials and Devices, College of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, China.,National Engineering Laboratory for Rice and Byproduct s Deep Processing, College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
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12
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Otsuka T, Tahara T, Nakamura M, Jing W, Ota M, Nomura T, Hayashi R, Shimasaki T, Shibata T, Arisawa T. Polymorphism rs7521584 in miR‑429 is associated with the severity of atrophic gastritis in patients with Helicobacter pylori infection. Mol Med Rep 2018; 18:2381-2386. [PMID: 29956763 DOI: 10.3892/mmr.2018.9200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 03/01/2017] [Indexed: 12/16/2022] Open
Abstract
The aim of the present study was to investigate an association of genetic polymorphism (rs7521584) located in miR‑200a‑200b‑429 cluster, which has tumor suppressor and pro‑inflammatory function, with the development of gastric mucosal atrophy and metaplasia as a pre‑malignant condition. Gastric mucosa samples were obtained from the antrum of 393 patients with no malignancies. The rs7521584 genotype was determined using the polymerase chain reaction‑single‑strand conformation polymorphism analysis method. The degree of gastritis was assessed histologically in all subjects and serum levels of pepsinogen (PG) I/II were quantified in 123 out of 393 patients. Patients with an atrophy score ≥1 and metaplasia score ≥1 were classified into the atrophic gastritis group (AG group). The rs7521584 TT genotype was significantly associated with the development of atrophic gastritis [odds ratio (OR), 2.41; 95% confidence interval (CI), 1.10‑5.25; P=0.027), particularly in patients with H. pylori infection (OR, 3.31; 95% CI, 1.35‑8.12; P=0.0089). In addition, in patients younger than 60 years of age, this genotype was associated with atrophic gastritis (OR, 3.15; 95% CI 1.03‑9.61; P=0.044)]. In patients with H. pylori infection, the metaplasia score was significantly higher in the TT homozygote compared with the GG+GT genotype. In the rs7521584 TT homozygote, serum PG I/II ratio was significantly reduced with increasing age (P=0.0084). No significant trend was identified between the GG+GT genotype and age. The results of the current study indicated that the rs7521584 minor allele homozygote was associated with the development of chronic gastritis under the influence of H. pylori‑induced inflammation, particularly with the severity of metaplastic alterations.
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Affiliation(s)
- Toshimi Otsuka
- Department of Gastroenterology, Kanazawa Medical University, Uchinada‑machi, Ishikawa 920‑0293, Japan
| | - Tomomitsu Tahara
- Department of Gastroenterology, Fujita Health University, Toyoake, Aichi 470‑1192, Japan
| | - Masakatsu Nakamura
- Department of Gastroenterology, Kanazawa Medical University, Uchinada‑machi, Ishikawa 920‑0293, Japan
| | - Wu Jing
- Department of Gastroenterology, Kanazawa Medical University, Uchinada‑machi, Ishikawa 920‑0293, Japan
| | - Masafumi Ota
- Department of Gastroenterology, Kanazawa Medical University, Uchinada‑machi, Ishikawa 920‑0293, Japan
| | - Tomoe Nomura
- Department of Gastroenterology, Kanazawa Medical University, Uchinada‑machi, Ishikawa 920‑0293, Japan
| | - Ranji Hayashi
- Department of Gastroenterology, Kanazawa Medical University, Uchinada‑machi, Ishikawa 920‑0293, Japan
| | - Takeo Shimasaki
- Department of Gastroenterology, Kanazawa Medical University, Uchinada‑machi, Ishikawa 920‑0293, Japan
| | - Tomoyuki Shibata
- Department of Gastroenterology, Fujita Health University, Toyoake, Aichi 470‑1192, Japan
| | - Tomiyasu Arisawa
- Department of Gastroenterology, Kanazawa Medical University, Uchinada‑machi, Ishikawa 920‑0293, Japan
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13
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Jiang L, Yang W, Bian W, Yang H, Wu X, Li Y, Feng W, Liu X. MicroRNA-623 Targets Cyclin D1 to Inhibit Cell Proliferation and Enhance the Chemosensitivity of Cells to 5-Fluorouracil in Gastric Cancer. Oncol Res 2018; 27:19-27. [PMID: 29495973 PMCID: PMC7848397 DOI: 10.3727/096504018x15193469240508] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The dysregulation of microRNAs (miRNAs) plays an important function in the onset and progression of gastric cancer (GC). In addition, aberrantly expressed miRNAs affect the chemosensitivity of GC cells to chemotherapeutic drugs. Hence, miRNA-based targeted therapy might be applied to treat patients with GC exhibiting chemotherapeutic resistance. In this study, miRNA-623 (miR-623) expression was downregulated in GC tissues and cell lines. Functional analysis showed that the restored miR-623 expression could inhibit the proliferation of GC cells and enhance their chemosensitivity to 5-FU via the cell apoptosis pathway. Cyclin D1 (CCND1) was identified as a direct target gene of miR-623 in GC. The overexpressed CCND1 in GC tissues was negatively correlated with miR-623 level. The recovered CCND1 expression counteracted the effects of miR-623 on GC cell proliferation, chemosensitivity, and 5-FU-induced apoptosis. Thus, our results suggest that miR-623 might function as a tumor suppressor in GC and could be a promising therapeutic target for patients with GC, especially those with chemotherapeutic resistance.
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Affiliation(s)
- Lihua Jiang
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Wenchuan Yang
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Weishi Bian
- Department of Cardiology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Hailin Yang
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Xia Wu
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Yuhua Li
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Wen Feng
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Xuejian Liu
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
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14
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Ding K, Tan S, Huang X, Wang X, Li X, Fan R, Zhu Y, Lobie PE, Wang W, Wu Z. GSE1 predicts poor survival outcome in gastric cancer patients by SLC7A5 enhancement of tumor growth and metastasis. J Biol Chem 2018; 293:3949-3964. [PMID: 29367342 DOI: 10.1074/jbc.ra117.001103] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 01/14/2018] [Indexed: 12/15/2022] Open
Abstract
Gastric cancer remains a malignancy with poor survival outcome. We herein report that GSE1, a proline-rich protein, possesses a role in the progression of human gastric cancer. The expression of GSE1 was observed to be much higher in human gastric cancer tissues compared with normal gastric tissues, and GSE1 expression correlated positively with lymph node metastasis, histological grade, depth of invasion, and clinical stage in gastric cancer patients. Moreover, GSE1 expression was also associated with decreased post-operative relapse-free survival and overall survival in the cohort. The forced expression of GSE1 in gastric cancer cell lines resulted in increased cell proliferation, increased colony formation, enhanced cell migration, and invasion. Furthermore, forced expression of GSE1 also increased tumor size and enhanced lung metastasis in xenograft models. The depletion of endogenous GSE1 with shRNAs decreased the oncogenicity and invasiveness of gastric cancer cells both in vitro and in vivo In addition, GSE1 was determined to be a direct target of miR-200b and miR-200c. Furthermore, GSE1 positively regulated the downstream gene SLC7A5 (also known as LAT-1), which was scanned and verified from mRNA sequencing. GSE1 therefore possesses an oncogenic role in human gastric cancer, and targeted therapeutic approaches to inhibit GSE1 function in gastric cancer warrant further consideration.
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Affiliation(s)
- Keshuo Ding
- From the Department of General Surgery, Fourth Affiliated Hospital of Anhui Medical University, 372 Tunxi Road, Hefei, Anhui 230022, China.,the Department of Pathology and
| | - Sheng Tan
- the Laboratory of Molecular Tumor Pathology, School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China
| | - Xing Huang
- the Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310006, China.,the Key Laboratory of Developmental Genes and Human Disease, Southeast University, Nanjing, Jiangsu 210096, China
| | - Xiaonan Wang
- the Laboratory of Pathogenic Microbiology and Immunology, Anhui Medical University, Hefei, Anhui 230032, China
| | | | - Rong Fan
- the Laboratory of Molecular Tumor Pathology, School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China
| | - Yong Zhu
- the Laboratory of Molecular Tumor Pathology, School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China
| | - Peter E Lobie
- the Tsinghua-Berkeley Shenzhen Institute and Division of Life Sciences and Health, Tsinghua University Graduate School, Shenzhen 518055, China, and.,the Cancer Science Institute of Singapore and Department of Pharmacology, National University Health System, National University of Singapore, Singapore 117599
| | - Wenbin Wang
- From the Department of General Surgery, Fourth Affiliated Hospital of Anhui Medical University, 372 Tunxi Road, Hefei, Anhui 230022, China,
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15
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Yu L, Wu D, Gao H, Balic JJ, Tsykin A, Han TS, Liu YD, Kennedy CL, Li JK, Mao JQ, Tan P, Oshima M, Goodall GJ, Jenkins BJ. Clinical Utility of a STAT3-Regulated miRNA-200 Family Signature with Prognostic Potential in Early Gastric Cancer. Clin Cancer Res 2018; 24:1459-1472. [PMID: 29330205 DOI: 10.1158/1078-0432.ccr-17-2485] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 11/29/2017] [Accepted: 01/03/2018] [Indexed: 11/16/2022]
Abstract
Purpose: The majority of gastric cancer patients are diagnosed with late-stage disease, for which distinct molecular subtypes have been identified that are potentially amenable to targeted therapies. However, there exists no molecular classification system with prognostic power for early-stage gastric cancer (EGC) because the molecular events promoting gastric cancer initiation remain ill-defined.Experimental Design: miRNA microarrays were performed on gastric tissue from the gp130F/F preclinical EGC mouse model, prior to tumor initiation. Computation prediction algorithms were performed on multiple data sets and independent gastric cancer patient cohorts. Quantitative real-time PCR expression profiling was undertaken in gp130F/F-based mouse strains and human gastric cancer cells genetically engineered for suppressed activation of the oncogenic latent transcription factor STAT3. Human gastric cancer cells with modulated expression of the miR-200 family member miR-429 were also assessed for their proliferative response.Results: Increased expression of miR-200 family members is associated with both tumor initiation in a STAT3-dependent manner in gp130F/F mice and EGC (i.e., stage IA) in patient cohorts. Overexpression of miR-429 also elicited contrasting pro- and antiproliferative responses in human gastric cancer cells depending on their cellular histologic subtype. We also identified a miR-200 family-regulated 15-gene signature that integrates multiple key current indicators of EGC, namely tumor invasion depth, differentiation, histology, and stage, and provides superior predictive power for overall survival compared with each EGC indicator alone.Conclusions: Collectively, our discovery of a STAT3-regulated, miR-200 family-associated gene signature specific for EGC, with predictive power, provides a molecular rationale to classify and stratify EGC patients for endoscopic treatment. Clin Cancer Res; 24(6); 1459-72. ©2018 AACR.
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Affiliation(s)
- Liang Yu
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular Translational Science, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia
| | - Di Wu
- Department of Periodontology, School of Dentistry, Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Hugh Gao
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular Translational Science, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia
| | - Jesse J Balic
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular Translational Science, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia
| | - Anna Tsykin
- Discipline of Medicine, University of Adelaide, Adelaide, South Australia.,School of Molecular and Biomedical Science, University of Adelaide, Adelaide, South Australia.,Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia
| | - Tae-Su Han
- Division of Genetics, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - You Dong Liu
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular Translational Science, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia.,Department of General Surgery, Shanghai Jiao Tong University Affiliated First People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Catherine L Kennedy
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria, Australia.,Department of Molecular Translational Science, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia
| | - Ji Kun Li
- Department of General Surgery, Shanghai Jiao Tong University Affiliated First People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Qi Mao
- Department of General Surgery, Shanghai Jiao Tong University Affiliated First People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Patrick Tan
- Genome Institute of Singapore, Singapore.,Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, Singapore.,Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Masanobu Oshima
- Division of Genetics, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Gregory J Goodall
- Discipline of Medicine, University of Adelaide, Adelaide, South Australia.,School of Molecular and Biomedical Science, University of Adelaide, Adelaide, South Australia.,Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia
| | - Brendan J Jenkins
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria, Australia. .,Department of Molecular Translational Science, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia
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16
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Guo J, Fang W, Sun L, Lu Y, Dou L, Huang X, Sun M, Pang C, Qu J, Liu G, Li J. Reduced miR-200b and miR-200c expression contributes to abnormal hepatic lipid accumulation by stimulating JUN expression and activating the transcription of srebp1. Oncotarget 2017; 7:36207-36219. [PMID: 27166182 PMCID: PMC5094994 DOI: 10.18632/oncotarget.9183] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 04/22/2016] [Indexed: 02/06/2023] Open
Abstract
Previous studies indicated that miR-200s participated in IL-6-induced hepatic insulin resistance. However, the role of miR-200s in hepatic lipid accumulation has not been elucidated. Here we found that miR-200b and miR-200c were reduced in the steatotic livers of mice fed a high-fat diet (HFD) and patients with nonalcoholic fatty liver disease. This down-regulation was accompanied by an increase in the expression of lipogenic proteins such as sterol regulatory element-binding protein 1 (SREBP1) and fatty acid synthase (FAS). The suppression of miR-200b and miR-200c in Hep1-6 and NCTC1469 hepatocytes enhanced intracellular triglyceride levels, which were associated with increased SREBP-1 and FAS protein levels. In contrast, the over-expression of miR-200b and miR-200c suppressed lipid accumulation and reduced the expression of SREBP1 and FAS in Hep1-6 and NCTC1469 cells transfected with miR-200b or miR-200c mimics. Importantly, the up-regulation of miR-200b and miR-200c could reverse oleic acid/palmitic acid-induced lipid accumulation in hepatocytes. A luciferase reporter assay identified that miR-200b and miR-200c could directly bind the 3′UTR of jun. JUN activated the transcription of srebp1 to increase lipid accumulation. The data also demonstrated that increased miR-200b and miR-200c expression might be associated with sitagliptin-reduced hepatic lipid accumulation in mice fed a HFD. These findings suggest, for the first time, that reduced miR-200b and miR-200c expression contributes to abnormal hepatic lipid accumulation by stimulating JUN expression and activating the transcription of srebp1.
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Affiliation(s)
- Jun Guo
- The Key Laboratory of Geriatrics, Beijing Hospital and Beijing Institute of Geriatrics, Ministry of Health, Beijing 100730, China.,National Laboratory of Biomacromolecules, Institute of Biophysics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100101, China
| | - Weiwei Fang
- The Key Laboratory of Geriatrics, Beijing Hospital and Beijing Institute of Geriatrics, Ministry of Health, Beijing 100730, China.,Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Libo Sun
- Department of Hepatobiliay Surgery and You-An Liver Transplantation Center, Beijing You-An Hospital, Capital Medical University, Beijing 100069, China
| | - Yonggang Lu
- The Key Laboratory of Geriatrics, Beijing Hospital and Beijing Institute of Geriatrics, Ministry of Health, Beijing 100730, China
| | - Lin Dou
- The Key Laboratory of Geriatrics, Beijing Hospital and Beijing Institute of Geriatrics, Ministry of Health, Beijing 100730, China
| | - Xiuqing Huang
- The Key Laboratory of Geriatrics, Beijing Hospital and Beijing Institute of Geriatrics, Ministry of Health, Beijing 100730, China
| | - Mingxiao Sun
- The Key Laboratory of Geriatrics, Beijing Hospital and Beijing Institute of Geriatrics, Ministry of Health, Beijing 100730, China
| | - Cheng Pang
- The Key Laboratory of Geriatrics, Beijing Hospital and Beijing Institute of Geriatrics, Ministry of Health, Beijing 100730, China.,Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Jing Qu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guanghui Liu
- National Laboratory of Biomacromolecules, Institute of Biophysics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian Li
- The Key Laboratory of Geriatrics, Beijing Hospital and Beijing Institute of Geriatrics, Ministry of Health, Beijing 100730, China.,Graduate School of Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
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17
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Wei W, Shi L, Chen W, Hu L, Chen D, Shi X, Xiang H, Guo C, Wu Z. miR-200c regulates the proliferation, apoptosis and invasion of gastric carcinoma cells through the downregulation of EDNRA expression. Int J Mol Med 2017; 41:1619-1626. [PMID: 29286062 DOI: 10.3892/ijmm.2017.3317] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 09/28/2017] [Indexed: 11/05/2022] Open
Abstract
This study aimed to investigate the regulatory effects of microRNA (miR)‑200c on the proliferation, apoptosis and invasion of gastric carcinoma cells and to elucidate the underlying mechanisms involving the possible role of endothelin receptor A (EDNRA). The expression levels of miR‑200c and EDNRA in the gastric carcinoma cell lines, BGC‑823, SGC‑7901 and HGC‑27, and in GES‑1 normal gastric cells were evaluated by RT‑PCR and western blot analysis. The gastric carcinoma cells, particularly the BGC‑823 cells, expressed significantly lower levels of miR‑200c than the normal gastric cells (P<0.01). Thus, the BGC‑823 cells were employed as model cells. In comparison to the normal gastric cells, EDNRA was overexpressed in the gastric carcinoma cells (P<0.01). Following the transfection of the gastric carcinoma cells with miR‑200c mimics, or negative control vector (miR‑200c NC), or with siRNA targeting EDNRA (siRNA EDNRA) or negatvie control siRNA (siRNA NC), the expression levels were assessed again by RT‑PCR and western blot analysis. The successful transfection of miR‑200c mimics was observed and this markedly elevated the expression of miR‑200c (P<0.01). The transfection of miR‑200c mimics or siRNA EDNRA notably decreased the EDNRA mRNA and protein expression levels (both P<0.01). In additoin, dual‑luciferase reporter gene analysis was performed to reveal the targeting relationship between miR‑200c and EDNRA. EDNRA was found to be the downstream target gene of miR‑200c. Moreover, methyl thiazolyl tetrazolium (MTT) assay, Hoechst staining and Transwell assay were conducted to demonstrate the effects of miR‑200c mimics or siRNA EDNRA on the proliferation, apoptosis and invasion of the gastric carcinoma cells, respectively. We found that transfection with miR‑200c mimics and siRNA EDNRA were able to markedly suppress the proliferation and invasive capacity, and to promote the apoptosis of the gastric carcinoma cells (all P<0.01). On the whole, our data indicate that miR‑200c regulates the proliferation, apoptosis and invasion of gastric carcinoma cells through the downregulation of EDNRA expression.
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Affiliation(s)
- Wei Wei
- Department of Gastroenterology, Jinhua Central Hospital, Jinhua, Zhejiang 321000, P.R. China
| | - Li Shi
- Department of Gastroenterology, Jinhua People's Hospital, Jinhua, Zhejiang 321000, P.R. China
| | - Weichang Chen
- Department of Gastroenterology, The First Affiliated Hospital of Suzhou University, Suzhou, Jiangsu 215006, P.R. China
| | - Liyu Hu
- Department of Gastroenterology, Jinhua People's Hospital, Jinhua, Zhejiang 321000, P.R. China
| | - Dan Chen
- Department of Gastroenterology, Jinhua People's Hospital, Jinhua, Zhejiang 321000, P.R. China
| | - Xiaoying Shi
- Department of Gastroenterology, Jinhua People's Hospital, Jinhua, Zhejiang 321000, P.R. China
| | - Hua Xiang
- Department of Gastroenterology, Jinhua People's Hospital, Jinhua, Zhejiang 321000, P.R. China
| | - Cunguo Guo
- Department of Gastroenterology, Jinhua People's Hospital, Jinhua, Zhejiang 321000, P.R. China
| | - Zhenping Wu
- Department of Gastroenterology, Jinhua People's Hospital, Jinhua, Zhejiang 321000, P.R. China
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18
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Kurata A, Yamada M, Ohno SI, Inoue S, Hashimoto H, Fujita K, Takanashi M, Kuroda M. Expression level of microRNA-200c is associated with cell morphology in vitro and histological differentiation through regulation of ZEB1/2 and E-cadherin in gastric carcinoma. Oncol Rep 2017; 39:91-100. [PMID: 29138864 PMCID: PMC5783608 DOI: 10.3892/or.2017.6093] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 10/30/2017] [Indexed: 01/21/2023] Open
Abstract
Scirrhous type gastric cancer is characterized by diffuse infiltration of poorly differentiated adenocarcinoma cells and poor prognosis. Although association of poorly differentiated histology with reduction in E-cadherin expression, as well as association of microRNA (miR)-200c with E-cadherin through regulation of ZEB1/2, has been reported, participation of miR-200c in gastric carcinogenesis is not fully understood. We used 6 cell lines originating from gastric cancers, and investigated levels of miR-200c along with its target mRNAs ZEB1/2 and E-cadherin by qRT-PCR. ZEB1 and E-cadherin protein expression was also assessed via western blotting. Furthermore, we investigated the expression levels of miR-200c by in situ hybridization, along with the expression of ZEB1 and E-cadherin by immunohistochemistry, in 97 gastric adenocarcinoma tissues. Inverse correlation between miR-200c and ZEB1 levels were obtained by qRT-PCR in cell lines (P<0.05). Cell lines with low miR-200c and high ZEB1 exhibited low E-cadherin expression in both qRT-PCR and western blotting, and exhibited spindle-shaped morphology, in contrast to round cell morphology in those cell lines with high miR-200c levels. Inverse correlations were also obtained between miR-200c and ZEB1 as well as between ZEB1 and E-cadherin levels in tissue samples (P<0.001). Cancer tissues with low miR-200c, high ZEB1, and low E-cadherin expression were associated with poorly differentiated histology, in contrast to tubular form in cancers with high miR-200c expression levels (P<0.001). Our data revealed that downregulation of miR-200c primarily regulated cell morphology by downregulation of E-cadherin through upregulation of ZEB1, leading to poorly differentiated histology in gastric cancer.
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Affiliation(s)
- Atsushi Kurata
- Department of Molecular Pathology, Tokyo Medical University, Tokyo 160-8402, Japan
| | - Masatoshi Yamada
- Department of Molecular Pathology, Tokyo Medical University, Tokyo 160-8402, Japan
| | - Shin-Ichiro Ohno
- Department of Molecular Pathology, Tokyo Medical University, Tokyo 160-8402, Japan
| | - Shigeru Inoue
- Department of Preventive Medicine and Public Health, Tokyo Medical University, Tokyo 160-8402, Japan
| | - Hirotsugu Hashimoto
- Department of Diagnostic Pathology, NTT Medical Center Tokyo, Tokyo 141-8625, Japan
| | - Koji Fujita
- Department of Molecular Pathology, Tokyo Medical University, Tokyo 160-8402, Japan
| | - Masakatsu Takanashi
- Department of Molecular Pathology, Tokyo Medical University, Tokyo 160-8402, Japan
| | - Masahiko Kuroda
- Department of Molecular Pathology, Tokyo Medical University, Tokyo 160-8402, Japan
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Wang G, Huang YX, Zhang R, Hou LD, Liu H, Chen XY, Zhu JS, Zhang J. Toosendanin suppresses oncogenic phenotypes of human gastric carcinoma SGC-7901 cells partly via miR-200a-mediated downregulation of β-catenin pathway. Int J Oncol 2017; 51:1563-1573. [DOI: 10.3892/ijo.2017.4139] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Accepted: 07/28/2017] [Indexed: 11/06/2022] Open
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Qiao W, Cao N, Yang L. MicroRNA-154 inhibits the growth and metastasis of gastric cancer cells by directly targeting MTDH. Oncol Lett 2017; 14:3268-3274. [PMID: 28927076 PMCID: PMC5588056 DOI: 10.3892/ol.2017.6558] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 02/03/2017] [Indexed: 11/06/2022] Open
Abstract
MicroRNAs (miRNAs) are a group of non-protein-coding, highly conserved single-stranded RNA molecules. The abnormal expression of miRNAs has been demonstrated to have an important function in the carcinogenesis and progression of gastric cancer. microRNA-154 (miR-154) has been reported to be downregulated in non-small cell lung, colorectal and prostate cancer. However, the expression and roles of miR-154 in gastric cancer remain to be established. The present study measured the expression levels of miR-154 in gastric cancer tissues and cell lines. miR-154 was found to be significantly downregulated in gastric cancer tissues and cell lines. In addition, functional studies indicated that the overexpression of miR-154 inhibited the proliferation, migration and invasion of gastric cancer cells. Using TargetScan, a dual luciferase reporter assay, reverse transcription-quantitative polymerase chain reaction and western blot analysis, metadherin (MTDH) was revealed as a novel miR-154 target. In addition, knocking down MTDH lead to a similar effect as overexpressing-154 in gastric cells. The present findings indicate that miR-154 was downregulated in gastric cancer, and inhibited tumor behaviors of gastric cancer cells partially through the downregulation of MTDH. Therefore, the miR-154/MTDH axis may be a novel therapeutic to treat patients with gastric cancer.
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Affiliation(s)
- Wenhui Qiao
- Department of General Surgery, The First Hospital of Lanzhou University, Chengguan, Lanzhou, Gansu 730000, P.R. China,Correspondence to: Professor Wenhui Qiao, Department of General Surgery, The First Hospital of Lanzhou University. 1 Donggang Dong Road, Chengguan, Lanzhou, Gansu 730000, P.R. China, E-mail:
| | - Nong Cao
- Department of General Surgery, The First Hospital of Lanzhou University, Chengguan, Lanzhou, Gansu 730000, P.R. China
| | - Lei Yang
- Department of General Surgery, The First Hospital of Lanzhou University, Chengguan, Lanzhou, Gansu 730000, P.R. China
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21
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Rabinowits G, Bowden M, Flores LM, Verselis S, Vergara V, Jo VY, Chau N, Lorch J, Hammerman PS, Thomas T, Goguen LA, Annino D, Schoenfeld JD, Margalit DN, Tishler RB, Haddad RI. Comparative Analysis of MicroRNA Expression among Benign and Malignant Tongue Tissue and Plasma of Patients with Tongue Cancer. Front Oncol 2017; 7:191. [PMID: 28900608 PMCID: PMC5581802 DOI: 10.3389/fonc.2017.00191] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 08/11/2017] [Indexed: 12/11/2022] Open
Abstract
Background Identification of a microRNA (miRNA) pattern to be used as a biomarker for HNSCC is challenging given the heterogeneity of the disease and different methodologies used. To better define the field, we performed a prospective analysis of blood, tumor, and paired benign tissues in tongue squamous cell carcinoma (SCC) patients. Methods Plasma samples were collected prior to surgery, and paired tumor and benign tissue blocks were collected from tongue cancer resections. Circulating free and exosomal miRNA, and paired tumor and benign tissues miRNA were analyzed. TaqMan-based miRNA arrays were used to quantitate the expression of 747 human miRNAs. The comparative Ct method assessed the miRNA profile results, and Student’s t-test determined statistical significance between tumor and benign samples. Results Sixteen of 359 miRNAs detected were differentially expressed between paired tumor and benign tissue. Nine were upregulated, and seven downregulated in tumor tissue. All nine upregulated and six of seven downregulated tumor miRNAs were expressed in circulating exosomes. In contrast, eight of nine upregulated and four of seven downregulated tumor miRNAs were circulating free in the plasma. Conclusion An aberrantly expressed pattern of miRNA was identified in both tumor and plasma of patients with tongue SCC, suggesting this may be a biomarker for SCC of the oral tongue. Circulating exosomes appear to be a more reliable method for evaluation of circulating tumor-miRNA expression. Further studies with a larger cohort of patients and serial blood samples are needed to validate our findings.
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Affiliation(s)
- Guilherme Rabinowits
- Medical Oncology Department, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Boston, MA, United States
| | - Michaela Bowden
- Medical Oncology Department, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Boston, MA, United States
| | - Ludmila M Flores
- Internal Medicine Department, Brigham and Women's Hospital, Boston, MA, United States
| | - Sigitas Verselis
- Dana-Farber Cancer Institute, Molecular Diagnostics Laboratory, Boston, MA, United States
| | - Victoria Vergara
- Medical Oncology Department, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Boston, MA, United States
| | - Vickie Y Jo
- Anatomic Pathology Department, Brigham and Women's Hospital, Boston, MA, United States
| | - Nicole Chau
- Medical Oncology Department, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Boston, MA, United States
| | - Jochen Lorch
- Medical Oncology Department, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Boston, MA, United States
| | - Peter S Hammerman
- Radiation Oncology Department, Dana-Farber, Brigham and Women's Hospital, Boston, MA, United States
| | - Tom Thomas
- Brigham and Women's Hospital, Otolaryngology Division, Boston, MA, United States
| | - Laura A Goguen
- Brigham and Women's Hospital, Otolaryngology Division, Boston, MA, United States
| | - Donald Annino
- Brigham and Women's Hospital, Otolaryngology Division, Boston, MA, United States
| | - Jonathan D Schoenfeld
- Radiation Oncology Department, Dana-Farber, Brigham and Women's Hospital, Boston, MA, United States
| | - Danielle N Margalit
- Radiation Oncology Department, Dana-Farber, Brigham and Women's Hospital, Boston, MA, United States
| | - Roy B Tishler
- Radiation Oncology Department, Dana-Farber, Brigham and Women's Hospital, Boston, MA, United States
| | - Robert I Haddad
- Medical Oncology Department, Dana-Farber Cancer Institute, Brigham and Women's Hospital, Boston, MA, United States
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22
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Li X, An Z, Li P, Liu H. A prognostic model for lung adenocarcinoma patient survival with a focus on four miRNAs. Oncol Lett 2017; 14:2991-2995. [PMID: 28927049 PMCID: PMC5588086 DOI: 10.3892/ol.2017.6481] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 06/15/2017] [Indexed: 12/15/2022] Open
Abstract
There is currently no effective biomarker for determining the survival of patients with lung adenocarcinoma. The purpose of the present study was to construct a prognostic survival model using microRNA (miRNA) expression data from patients with lung adenocarcinoma. miRNA data were obtained from The Cancer Genome Atlas, and patients with lung adenocarcinoma were divided into either the training or validation set based on the random allocation principle. The prognostic model focusing on miRNA was constructed, and patients were divided into high-risk or low-risk groups as per the scores, to assess their survival time. The 5-year survival rate from the subgroups within the high- and low-risk groups was assessed. P-values of the prognostic model in the total population, the training set and validation set were 0.0017, 0.01986 and 0.02773, respectively, indicating that the survival time of the lung adenocarcinoma high-risk group was less than that of the low-risk group. Thus, the model had a good assessment effectiveness for the untreated group (P=0.00088) and the Caucasian patient group (P=0.00043). In addition, the model had the best prediction effect for the 5-year survival rate of the Caucasian patient group (AUC=0.629). In conclusion, the prognostic model developed in the present study can be used as an independent prognostic model for patients with lung adenocarcinoma.
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Affiliation(s)
- Xianqiu Li
- Department of Pharmacy, Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
| | - Zhaoling An
- Department of Pharmacy, Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
| | - Peihui Li
- Department of Pharmacy, Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
| | - Haihua Liu
- Department of Pharmacy, Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
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Wang Y, Yin X, Zhao L, Li S, Duan J, Kuang R, Duan J. MicroRNA-200b inhibits pituitary tumor cell proliferation and invasion by targeting PKCα. Exp Ther Med 2017; 14:1706-1714. [PMID: 28810639 DOI: 10.3892/etm.2017.4681] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 01/13/2017] [Indexed: 12/27/2022] Open
Abstract
The present study aimed to investigate the expression of miR-200b and protein kinase Cα (PKCα) in pituitary tumors and to determine whether miR-200b may inhibit proliferation and invasion of pituitary tumor cells. The regulation of PKCα expression was targeted in order to find novel targets for the treatment of pituitary tumors. In total, 53 pituitary tumor tissue samples were collected; these included 28 cases of invasive pituitary tumors and 25 cases of non-invasive tumors, in addition to 5 normal pituitaries. The expression level of miR-200b in the pituitary tumor tissue was detected by quantitative polymerase chain reaction (qPCR) and the expression of PKCα protein was detected by immunohistochemistry. A PKCα 3'untranslated region (UTR) luciferase vector was constructed and a dual luciferase reporter gene assay was employed in order to examine the effect of miR-200b on the PKCα 3'UTR luciferase activity. AtT-20 cells were transfected with miR-200b mimics, PKCα siRNA and miR-200b mimics + PKCα, and the changes in cellular proliferation, invasion and apoptosis were observed via MTT, Transwell assay and flow cytometric analysis. Furthermore, PKCα mRNA expression was determined by qPCR, and Western blotting was performed to detect the expression of PKCα protein. miR-200b revealed downregulation in invasive pituitary tumor tissue, and the expression level was significantly down-regulated compared with normal and non-invasive pituitary tumor tissue (P<0.01). In addition, the positive rate of PKCα protein expression in invasive pituitary tumor tissues was significantly higher than in normal and non-invasive tissues (P<0.01). PKCα protein levels are inversely correlated with miR-200b levels in invasive pituitary tumor tissues (r=-0.436, P=0.021). The dual luciferase reporter gene assay revealed that miR-200b could specifically bind to the 3'UTR of PKCα and significantly inhibit the luciferase activity by 39% (P<0.01). Upregulation of miR-200b or downregulation of PKCα could suppress cell proliferation and invasion, and increase apoptosis of AtT-20 cells. It was revealed that PKCα siRNA could suppress both proliferation and invasion of AtT-20 cells and partially simulate the function of miR-200b. Expression of PKCα mRNA and protein decreased significantly in AtT-20 cells overexpressing miR-200b. Additionally, miR-200b was significantly down-regulated in invasive pituitary tumor tissue and inversely correlated with PKCα protein levels. In conclusion, miR-200b inhibited proliferation and invasiveness and promoted the apoptosis of pituitary tumor cells by targeting PKCα. The observations of the present study indicate that miR-200b and PKCα may serve as promising therapeutic targets for invasive pituitary tumors.
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Affiliation(s)
- Yuanchuan Wang
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan 637000, P.R. China
| | - Xiaohong Yin
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan 637000, P.R. China
| | - Long Zhao
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan 637000, P.R. China
| | - Shun Li
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan 637000, P.R. China
| | - Jie Duan
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan 637000, P.R. China
| | - Renzhao Kuang
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan 637000, P.R. China
| | - Junwei Duan
- Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan 637000, P.R. China
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Abstract
OBJECTIVE To study whether miR-200a and miR-200b target PTEN gene expression to regulate the endometrial cancer cell growth in vitro. METHODS Endometrial cancer cells ECC-1 were cultured and transfected with the miR-200a and miR-200b mimics and inhibitors as well as the negative control mimics and inhibitors, and then the cell proliferation activity as well as the expression of PTEN and downstream genes in cells was determined; after transfection of miR-200a and miR-200b mimics as well as PTEN-3'UTR luciferase report gene plasmids, the fluorescence activity of luciferase reporter gene was determined. RESULTS 12 h, 24 h and 48 h after transfection, the cell proliferation activity of miR-200a mimics group and miR-200b mimics group were significantly higher than those of NC mimics group while the cell proliferation activity of miR-200a inhibitor group and miR-200b inhibitor group were significantly lower than those of NC inhibitor group; 48 h after transfection, PTEN expression in cells and PTEN-3'UTR luciferase reporter gene fluorescence activity of miR-200a mimics group and miR-200b mimics group were significantly lower than those of NC mimics group while p-PI3K and p-Akt expression were significantly higher than those of NC mimics group; PTEN expression in cells and PTEN-3'UTR luciferase reporter gene fluorescence activity of miR-200a inhibitor group and miR-200b inhibitor group were significantly higher than those of NC inhibitor group while p-PI3K and p-Akt expression were significantly lower than those of NC inhibitor group. CONCLUSION miR-200a and miR-200b can promote the endometrial cancer cell growth in vitro by targeted inhibition of PTEN gene expression.
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Xiong DD, Lv J, Wei KL, Feng ZB, Chen JT, Liu KC, Chen G, Luo DZ. A nine-miRNA signature as a potential diagnostic marker for breast carcinoma: An integrated study of 1,110 cases. Oncol Rep 2017; 37:3297-3304. [PMID: 28440475 DOI: 10.3892/or.2017.5600] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 11/14/2016] [Indexed: 11/05/2022] Open
Abstract
Growing evidence indicates that microRNAs (miRNAs) play critical roles in the initiation and progression of breast carcinoma (BC) and are promising diagnostic biomarkers. In the present study, we aimed to identify a multi-marker miRNA pool with high diagnostic performance for BC. We collected miRNA expression profiles of BC samples and normal breast tissues from The Cancer Genome Atlas (TCGA) and screened differentially expressed miRNAs by conducting two‑sample t-tests and by calculating log2 fold-change (log2FC) ratios. Statistical significance was established at p<0.001 and |log2FC| >1. Then, we generated receiver operating characteristic (ROC) curves, calculated the area under the curve (AUC) with a 95% confidence interval (95% CI), and calculated the diagnostic sensitivity and specificity using MedCalc software. Additionally, we predicted the targets of candidate miRNAs using 10 online databases: TarBase, miRTarBase, TargetScan, TargetMiner, microRNA.org, RNA22, PicTar-vert, miRDB, PITA and PolymiRTS. Target genes that were predicted by at least four algorithms were chosen, and cooperative targets of multiple miRNAs were further selected for GO and KEGG pathway analyses through the DAVID online tool. Eventually, a total of 66 differentially expressed miRNAs were identified after miRNA expression profiles were analyzed in BC and normal breast samples. Of these, we selected nine dysregulated miRNAs as candidate diagnostic markers: seven upregulated miRNAs (hsa-miR-21, hsa-miR-96, hsa-miR-183, hsa-miR‑182, hsa-miR-141, hsa-miR-200a and hsa-miR-429) and two downregulated miRNAs (hsa-miR-139 and hsa-miR‑145). The ROC curve for the combination of these nine differently expressed miRNAs showed extremely high diagnostic accuracy, with an AUC of 0.995 (95% CI, 0.988‑0.999) and diagnostic sensitivity and specificity of 98.7 and 98.9%, respectively. In conclusion, the combination of these nine miRNAs significantly improved the accuracy of breast cancer diagnosis.
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Affiliation(s)
- Dan-Dan Xiong
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Jun Lv
- Department of Radiotherapy, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Kang-Lai Wei
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Zhen-Bo Feng
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Ji-Tian Chen
- Department of Pathology, People's Hospital of Ling Shan, Ling Shan, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Ke-Cheng Liu
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Gang Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
| | - Dian-Zhong Luo
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, P.R. China
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Liu CZ, Ye ZH, Ma J, He RQ, Liang HW, Peng ZG, Chen G. A qRT-PCR and Gene Functional Enrichment Study Focused on Downregulation of miR-141-3p in Hepatocellular Carcinoma and Its Clinicopathological Significance. Technol Cancer Res Treat 2017; 16:835-849. [PMID: 28436261 PMCID: PMC5762039 DOI: 10.1177/1533034617705056] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The clinical significance of miR-141-3p in hepatocellular carcinoma has not been verified. Therefore, we conducted this study to examine miR-141-3p expression and its clinical significance in hepatocellular carcinoma and to investigate the functions of its potential targets. METHODS The Cancer Genome Atlas database and the Gene Expression Omnibus database were used to explore the aberrant expression of miR-141-3p in hepatocellular carcinoma. Furthermore, we assessed the miR-141-3p levels in 95 hepatocellular carcinoma tissues with 95 matched adjacent tissues using real-time quantitative polymerase chain reaction. Moreover, a target gene prediction analysis of miR-141-3p, a natural language processing analysis for hepatocellular carcinoma using PubMed, and a gene functional enrichment analysis were conducted to search the potential function of miR-141-3p in the pathogenesis of hepatocellular carcinoma. RESULTS Regarding The Cancer Genome Atlas data, miR-141-3p levels were markedly downregulated in hepatocellular carcinoma tissue compared to para- or nontumor tissue (4.6112 [1.7096] vs 5.3053 [1.4254], P = .045). MiR-141-3p expression was reduced in patients with hepatocellular carcinoma with a low pathologic T stage (P = .006), a low grade (P = .01), elderly hepatocellular carcinoma patients (P = .001), and male patients with hepatocellular carcinoma (P = .01) compared with that in patients with hepatocellular carcinoma with high pathologic T stages, high grades, young patients with hepatocellular carcinoma, and female patients with hepatocellular carcinoma. However, according to the Gene Expression Omnibus database, no significant differences in the expression of miR-141-3p were observed between hepatocellular carcinoma tissue and normal liver tissue (P = .984). Real-time quantitative polymerase chain reaction confirmed a similar trend of decreased miR-141-3p in hepatocellular carcinoma tissue (1.7542 [0.8663] vs 2.5562 [1.7913], P = .001) as observed in The Cancer Genome Atlas. In addition, decreased miR-141-3p levels were detected in the multiple tumor nodes group (P = .004), the metastasis group (P < .001), and the advanced TNM stage group (P = .01), compared to the single tumor nodes group, the nonmetastasis group, and the early TNM stage group. Two hundred eighty-two genes were identified from the overlap between the predicted targets and the natural language processing analysis. Gene ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses revealed several significant biological functions and pathways related to the pathogenesis of cancers, including hepatocellular carcinoma. CONCLUSION Downregulation of miR-141-3p might be responsible for the carcinogenesis and aggressiveness of hepatocellular carcinoma. MiR-141-3p may act as an antitumor microRNA, which is essential for hepatocellular carcinoma progression through the regulation of various signaling pathways. Thus, interactions with miR-141-3p may provide a novel strategy for hepatocellular carcinoma treatment in the future.
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Affiliation(s)
- Cui-Zhen Liu
- Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Zhi-Hua Ye
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Jie Ma
- Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Rong-Quan He
- Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Hai-Wei Liang
- Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Zhi-Gang Peng
- Department of Medical Oncology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Gang Chen
- Department of Pathology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, People's Republic of China
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Peng N, Shi L, Zhang Q, Hu Y, Wang N, Ye H. Microarray profiling of circular RNAs in human papillary thyroid carcinoma. PLoS One 2017; 12:e0170287. [PMID: 28288173 PMCID: PMC5347999 DOI: 10.1371/journal.pone.0170287] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 01/03/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Non-coding circular RNAs (circRNAs) have displayed dysregulated expression in several human cancers. Here, we profiled the circRNA expression of papillary thyroid carcinoma (PTC) tumors to improve our understanding of PTC pathogenesis. METHODS Microarray profiling was performed on 18 thyroid samples, consisting of six PTC tumors, six matching contralateral normal samples, and six benign thyroid lesions. After low-intensity filtering, hierarchical clustering revealed the circRNA expression patterns. Statistical analysis followed by qRT-PCR validation identified the differential circRNAs. MicroRNA (miRNA) target prediction software identified putative miRNA response elements (MREs), which were used to construct a network map of circRNA-miRNA interactions for the differential circRNAs. Bioinformatics platforms predicted cancer-related circRNA-miRNA associations and putative downstream target genes, respectively. RESULTS A total of 88 circRNAs and 10 circRNAs were significantly upregulated and downregulated, respectively, in PTC tumors relative to normal thyroid tissue, while 129 circRNAs and 226 circRNAs were significantly upregulated and downregulated, respectively, in PTC tumors relative to benign thyroid lesions. A total of 12 upregulated and four downregulated circRNAs were overlapping between the foregoing comparisons. One downregulated circRNA (hsa_circRNA_100395) showed interactive potential with two cancer-related miRNAs (miR-141-3p and miR-200a-3p). From this analysis, we identified several promising cancer-related genes that may be targets of the dysregulated hsa_circRNA_100395/miR-141-3p/miR-200a-3p axis in PTC tumors. CONCLUSIONS circRNA dysregulation may play a role in PTC pathogenesis, and several key circRNAs show promise as candidate biomarkers for PTC. The hsa_circRNA_100395/miR-141-3p/ miR-200a-3p axis may be involved in the pathogenesis of PTC.
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Affiliation(s)
- Nianchun Peng
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Lixin Shi
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, Guiyang, China
- * E-mail:
| | - Qiao Zhang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Ying Hu
- Department of Endocrinology and Metabolism, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Nanpeng Wang
- Department of Thyroid Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Hui Ye
- Department of Thyroid Surgery, Affiliated Hospital of Guizhou Medical University, Guiyang, China
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Computational Analysis of Specific MicroRNA Biomarkers for Noninvasive Early Cancer Detection. BIOMED RESEARCH INTERNATIONAL 2017; 2017:4680650. [PMID: 28357401 PMCID: PMC5357545 DOI: 10.1155/2017/4680650] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 02/13/2017] [Indexed: 01/18/2023]
Abstract
Cancer is a complex disease residing in various tissues of human body, accompanied with many abnormalities and mutations in genomes, transcriptome, and epigenome. Early detection plays a crucial role in extending survival time of all major cancer types. Recent advances in microarray and sequencing techniques have given more support to identifying effective biomarkers for early detection of cancer. MicroRNAs (miRNAs) are more and more frequently used as candidates for biomarkers in cancer related studies due to their regulation of target gene expression. In this paper, the comparative analysis is used to discover miRNA expression patterns in cancer versus normal samples on early stage of eight prevalent cancer types. Our work focuses on the specific miRNAs biomarkers identification and function analysis. Several identified miRNA biomarkers in this paper are matched well with those reported in existing researches, and most of them could serve as potential candidate indicators for clinical early diagnosis applications.
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Circular RNA 0000096 affects cell growth and migration in gastric cancer. Br J Cancer 2017; 116:626-633. [PMID: 28081541 PMCID: PMC5344286 DOI: 10.1038/bjc.2016.451] [Citation(s) in RCA: 192] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 12/16/2016] [Accepted: 12/20/2016] [Indexed: 01/17/2023] Open
Abstract
Background: Circular RNAs (circRNAs) are a class of non-coding RNAs broadly expressed in cells of various species. Their role in cancers, especially in gastric cancer, is poorly understood. Methods: Circular RNA 0000096 (hsa_circ_0000096) levels in 101 paired gastric cancer tissues and adjacent non-tumorous tissues from patients with gastric cancer were detected by real-time quantitative reverse transcription-polymerase chain reaction. A receiver operating characteristic curve was generated to evaluate the diagnostic value of hsa_circ_0000096. RNA interference was used to manipulate the expression of hsa_circ_0000096. Its biological effects were evaluated by flow cytometry, real-time cell analysis, a wound scratch assay, western blot analysis and xenograft models. Results: Hsa_circ_0000096 was found to be significantly downregulated in gastric cancer tissues and gastric cancer cell lines compared with paired adjacent non-tumorous tissues and normal gastric epithelial cells (P<0.001). Moreover, knockdown of hsa_circ_0000096 significantly inhibited cell proliferation and migration in vitro and in vivo. The results of both immunohistochemical and western blot analyses showed that the protein levels of cyclin D1, cyclin-dependent kinase 6 (CDK6), matrix metalloproteinase-2 and MMP-9 were significantly reduced in vitro and in vivo. A gastric cancer xenograft nude mouse model indicated that Ki67 and VEGF were reduced in a dose-dependent manner following knockdown of hsa_circ_0000096. However, the expression of E-cadherin increased. Conclusions: Hsa_circ_0000096 may be used as a potential novel biomarker for gastric cancer. It affects gastric cancer cell growth and migration by regulating cyclin D1, CDK6, MMP-2 and MMP-9.
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Qian C, Dang X, Wang X, Xu W, Pang G, Chen Y, Liu C. Molecular Mechanism of MicroRNA-200c Regulating Transforming Growth Factor-β (TGF-β)/SMAD Family Member 3 (SMAD3) Pathway by Targeting Zinc Finger E-Box Binding Homeobox 1 (ZEB1) in Hypospadias in Rats. Med Sci Monit 2016; 22:4073-4081. [PMID: 27794206 PMCID: PMC5091215 DOI: 10.12659/msm.896958] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background The aim of this study was to explore effects of microRNA-200c regulating TGF-β/Smad3 pathway by targeting Zeb1 on the occurrence and development of hypospadias and to evaluate the relationship between microRNA-200c and occurrence of hypospadias. Material/Methods Pregnant rats with a gestational age of 12 days were allocated into 2 groups; one received gavage of DEHP-contained soybean oil (1 ml/day, 8 days; Group A) and the other had gavage of normal soybean oil (1 ml/day, 8 days; Group B). Baby rats with hypospadias from Group A were assigned to the model group (n=20) and healthy baby rats from Group B were assigned to the control group (n=20). Real-time quantitative polymerase chain reaction (qRT-PCR), immunohistochemistry and Western blot analysis were performed to detect microRNA-200c, Zeb1, TGF-β, and Smad3 mRNA and protein expressions in the model group (n=20) and the control group (n=20). The relationship between microRNA-200c and Zeb1 was detected using a dual-luciferase reporter gene experiment. After the in vitro intervention experiment in fetal rat penises, Western blot was used to detect the expression of Zeb1, TGF-β, and Smad3. Results In the model group, microRNA-200c was expressed at a low level, and microRNA-200c expression in control group was 2.1 times higher than in the model group (P<0.05). When compared with the control group, mRNA expressions, protein expressions, and positive rates of Zeb1, TGF-β, and Smad3 were higher in the model group (all P<0.01). Luciferase gene report determined that Zeb1 is a target gene of microRNA-200c. The in vitro intervention experiment in fetal rat penises found that a high concentration of microRNA-200c inhibited hypospadias occurrence by suppressing the expression of Zeb1, TGF-β, and Smad3. Conclusions MicroRNA-200c was expressed in hypospadias penis tissues at low levels and was negatively correlated with Zeb1 expression. MicroRNA-200c up-regulated Zeb1 expression to regulate the TGF-β/Smad3 pathway, which led to the occurrence of hypospadias.
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Affiliation(s)
- Chong Qian
- Department of Urology, The First People's Hospital of Yulin, Yulin, Guangxi, China (mainland)
| | - Xiangyang Dang
- Department of Urology, The First People's Hospital of Yulin, Yulin, Guangxi, China (mainland)
| | - Xianglin Wang
- Department of Urology, The First People's Hospital of Yulin, Yulin, Guangxi, China (mainland)
| | - Wei Xu
- Department of Urology, The First People's Hospital of Yulin, Yulin, Guangxi, China (mainland)
| | - Guijian Pang
- Department of Urology, The First People's Hospital of Yulin, Yulin, Guangxi, China (mainland)
| | - Yifeng Chen
- Department of Urology, The First People's Hospital of Yulin, Yulin, Guangxi, China (mainland)
| | - Chengbei Liu
- Department of Urology, The First People's Hospital of Yulin, Yulin, Guangxi, China (mainland)
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Liep J, Kilic E, Meyer HA, Busch J, Jung K, Rabien A. Cooperative Effect of miR-141-3p and miR-145-5p in the Regulation of Targets in Clear Cell Renal Cell Carcinoma. PLoS One 2016; 11:e0157801. [PMID: 27336447 PMCID: PMC4919070 DOI: 10.1371/journal.pone.0157801] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 06/04/2016] [Indexed: 12/17/2022] Open
Abstract
Background Due to the poor prognosis for advanced renal cell carcinoma (RCC), there is an urgent need for new therapeutic targets and for prognostic markers to identify high risk tumors. MicroRNAs (miRNAs) are frequently dysregulated in tumors, play a crucial role during carcinogenesis and therefore might be promising new biomarkers. In previous studies, we identified miR-141-3p and miR-145-5p to be downregulated in clear cell RCC (ccRCC). Our objective was to investigate the functional association of these miRNAs, focusing on the cooperative regulation of new specific targets and their role in ccRCC progression. Methods The effect of miR-141-3p and miR-145-5p on cell migration was examined by overexpression in 786-O cells. New targets of both miRNAs were identified by miRWalk, validated in 786-O and ACHN cells and additionally characterized in ccRCC tissue on mRNA and protein level. Results In functional analysis, a tumor suppressive effect of miR-141-3p and miR-145-5p by decreasing migration and invasion of RCC cells could be shown. Furthermore, co-overexpression of the miRNAs seemed to result in an increased inhibition of cell migration. Both miRNAs were recognized as post-transcriptional regulators of the targets EAPP, HS6ST2, LOX, TGFB2 and VRK2. Additionally, they showed a cooperative effect again as demonstrated by a significantly increased inhibition of HS6ST2 and LOX expression after simultaneous overexpression of both miRNAs. In ccRCC tissue, LOX mRNA expression was strongly increased compared to normal tissue, allowing also to distinguish between non-metastatic and already metastasized primary tumors. Finally, in subsequent tissue microarray analysis LOX protein expression showed a prognostic relevance for the overall survival of ccRCC patients. Conclusion These results illustrate a jointly strengthening effect of the dysregulated miR-141-3p and miR-145-5p in various tumor associated processes. Focusing on the cooperative effect of miRNAs provides new opportunities for the development of therapeutic strategies and offers novel prognostic and diagnostic capabilities.
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Affiliation(s)
- Julia Liep
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin, Germany
- Berlin Institute for Urologic Research, Berlin, Germany
| | - Ergin Kilic
- Institute of Pathology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Hellmuth A. Meyer
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Jonas Busch
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Klaus Jung
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin, Germany
- Berlin Institute for Urologic Research, Berlin, Germany
| | - Anja Rabien
- Department of Urology, Charité - Universitätsmedizin Berlin, Berlin, Germany
- Berlin Institute for Urologic Research, Berlin, Germany
- * E-mail:
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Wu RL, Ali S, Sarkar FH, Beydoun R. Identification of Differentially Expressed miRNAs in Appendiceal Mucinous Cystadenocarcinoma from Mucinous Cystadenoma. ACTA ACUST UNITED AC 2015; 7:328-335. [PMID: 26807210 PMCID: PMC4720386 DOI: 10.4172/1948-5956.1000371] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Objective Mucinous cystadenocarcinoma of appendix is a rare entity. Differentiating mucinous cystadenocarcinoma from mucinous cystadenoma is very challenging and depends on establishing the presence of malignant cells in the appendix wall. The invasion may be very difficult to assess in some cases, especially in early stages of the disease, which could have devastating prognostic effects on patients. Therefore, it is necessary to develop an ancillary test that can differentiate the mucinous cystadenocarcinoma from mucinous cystadenoma. So far, there is no report available about the role of differentially expressed miRNAs in the diagnosis of appendiceal mucinous cystadenocarcinoma. Materials and Methods Six confirmed mucinous appendiceal cystadenocarcinoma and twelve mucinous appendiceal cystadenoma cases were selected. The total RNAs were extracted from the formalin-fixed paraffin-embedded specimen of these cases. The comprehensive miRNA microarray expression profiling from pooled aliquots of RNA samples from these two entities were analyzed to detect the differentially expressed miRNAs in mucinous cystadenocarcinoma. The best seven differentially expressed miRNAs were validated in individual cases by quantitative reverse transcriptase PCR (qRT-PCR). Results The microarray miRNA expression profiling analysis revealed 646 miRNAs that were differentially expressed in the mucinous cystadenocarcinoma. Among these differentially expressed miRNAs, the expression of 80 miRNAs showed statistical difference (p<0.01). The quantitative RT-PCR validated that the expression of miR-1, miR-4328 was significantly down regulated in mucinous cystadenocarcinoma compared to the mucinous cystadenoma (p<0.05). On the other hand, the expression of miR-200b, miR-200c, miR-451, miR-223 and miR-21 were significantly upregulated in mucinous cystadenocarcinoma (p<0.05). Conclusion The expression levels of miRNAs tested were significantly altered in the appendiceal mucinous cystadenocarcinoma samples compared to the mucinous cystadenoma. These data suggest that the miRNA expression in mucinous appendiceal neoplasm may help to supplement the morphological evaluation in distinguishing benign from malignant tumors.
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Affiliation(s)
- Richard Licheng Wu
- Department of Pathology, Jackson Memorial Hospital, University of Miami, Miami, Florida, USA
| | - Shadan Ali
- Department of Oncology, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Fazlul H Sarkar
- Department of Oncology, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, Michigan, USA; Department of Pathology, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Rafic Beydoun
- Department of Pathology, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, Michigan, USA
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Ünlü ES, Gordon DM, Telli M. Small RNA Sequencing Based Identification of MiRNAs in Daphnia magna. PLoS One 2015; 10:e0137617. [PMID: 26367422 PMCID: PMC4569176 DOI: 10.1371/journal.pone.0137617] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 08/20/2015] [Indexed: 12/19/2022] Open
Abstract
Small RNA molecules are short, non-coding RNAs identified for their crucial role in post-transcriptional regulation. A well-studied example includes miRNAs (microRNAs) which have been identified in several model organisms including the freshwater flea and planktonic crustacean Daphnia. A model for epigenetic-based studies with an available genome database, the identification of miRNAs and their potential role in regulating Daphnia gene expression has only recently garnered interest. Computational-based work using Daphnia pulex, has indicated the existence of 45 miRNAs, 14 of which have been experimentally verified. To extend this study, we took a sequencing approach towards identifying miRNAs present in a small RNA library isolated from Daphnia magna. Using Perl codes designed for comparative genomic analysis, 815,699 reads were obtained from 4 million raw reads and run against a database file of known miRNA sequences. Using this approach, we have identified 205 putative mature miRNA sequences belonging to 188 distinct miRNA families. Data from this study provides critical information necessary to begin an investigation into a role for these transcripts in the epigenetic regulation of Daphnia magna.
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Affiliation(s)
- Ercan Selçuk Ünlü
- Abant İzzet Baysal University, Faculty of Art and Science, Department of Chemistry, Bolu, Turkey
| | - Donna M. Gordon
- Mississippi State University, Department of Biological Sciences, Mississippi State, Starkville, Mississippi, United States of America
| | - Murat Telli
- Abant İzzet Baysal University, Faculty of Art and Science, Department of Biology, Bolu, Turkey
- * E-mail:
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