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Maharati A, Tolue Ghasaban F, Akhlaghipour I, Taghehchian N, Zangouei AS, Moghbeli M. MicroRNA-495: a therapeutic and diagnostic tumor marker. J Mol Histol 2023; 54:559-578. [PMID: 37759132 DOI: 10.1007/s10735-023-10159-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 09/18/2023] [Indexed: 09/29/2023]
Abstract
Therapeutic and diagnostic progresses have significantly reduced the mortality rate among cancer patients during the last decade. However, there is still a high rate of mortality among cancer patients. One of the important reasons involved in the high mortality rate is the late diagnosis in advanced tumor stages that causes the failure of therapeutic strategies in these patients. Therefore, investigating the molecular mechanisms involved in tumor progression has an important role in introducing the efficient early detection markers. MicroRNAs (miRNAs) as stable factors in body fluids are always considered as non-invasive diagnostic and prognostic markers. In the present review, we investigated the role of miR-495 in tumor progression. It has been reported that miR-495 has mainly a tumor suppressor function through the regulation of transcription factors and tyrosine kinases as well as cellular processes such as multidrug resistance, chromatin remodeling, and signaling pathways. This review can be an effective step towards introducing the miR-495 as a non-invasive diagnostic/prognostic marker as well as a suitable target in tumor therapy.
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Affiliation(s)
- Amirhosein Maharati
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Faezeh Tolue Ghasaban
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Iman Akhlaghipour
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Negin Taghehchian
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir Sadra Zangouei
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Meysam Moghbeli
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
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Wu Z, Deng G, Ma X, Zhang T, Guo S, Zhou Q, Yang C. MiR-495-3p attenuates cell pyroptosis and endometritis through inhibiting the activation of NLRP3 inflammasome in bovine. Mol Immunol 2023; 163:75-85. [PMID: 37748281 DOI: 10.1016/j.molimm.2023.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 09/04/2023] [Accepted: 09/11/2023] [Indexed: 09/27/2023]
Abstract
miR-495 is aberrantly expressed and affects the progression of inflammation in various diseases. However, the mechanisms of miR-495 in bovine endometritis remain largely unknown. This study investigated the mechanism of miR-495 in lipopolysaccharide (LPS)-induced bovine endometritis and pyroptosis and found that miR-495 inhibits NLRP3 inflammasome activation and inflammatory immune responses in endometritis tissue and cell models. Bovine endometrial epithelial cells (BENDs) were treated with 10 μg/mL LPS to establish a cell inflammatory model. LPS stimulation activated the NLRP3 inflammasome and elevated the expression of proinflammatory factors in BEND cells. In addition, pyroptosis and methylation-dependent inhibition of miR-495 was discovered in LPS-exposed BENDs. Furthermore, overexpression of miR-495 inhibited activation of the NLRP3 inflammasome in vitro and vivo. Collectively, our data demonstrate that miR-495 can attenuate activation of the NLRP3 inflammasome to protect against pyroptosis and bovine endometritis, which provides novel therapeutic targets for bovine endometritis and other inflammatory diseases.
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Affiliation(s)
- Zhimin Wu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Ganzhen Deng
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.
| | - Xiaofei Ma
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou, China
| | - Tao Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Shuai Guo
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Qingqing Zhou
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Chen Yang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
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3
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Rittavee Y, Artus J, Desterke C, Simanic I, de Souza LEB, Riccaldi S, Coignard S, Ijjeh Y, Hugues P, Bennaceur-Griscelli A, Turhan AG, Foudi A. miR-495-3p sensitizes BCR-ABL1-expressing leukemic cells to tyrosine kinase inhibitors by targeting multidrug resistance 1 gene in T315I mutated cells. Exp Hematol 2023; 118:40-52. [PMID: 36535407 DOI: 10.1016/j.exphem.2022.12.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/08/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022]
Abstract
Chronic myeloid leukemia (CML) is a clonal hematopoietic malignancy driven by the BCR-ABL1 fusion oncoprotein. The development of tyrosine kinase inhibitors (TKIs) has deeply increased long-term survival of CML patients. Nonetheless, one patient out of four will switch TKI off owing either to drug intolerance or resistance partly due to amplification or mutations of BCR-ABL1 oncogene and alteration in ATP-binding cassette (ABC) transporters. Increasing evidence suggests the involvement of the microRNA miR-495-3p in cancer-associated chemoresistance through multidrug resistance 1 (MDR1) gene, which encodes an ATP-dependent efflux pump. Our study aimed at investigating the potential role of miR-495-3p in CML TKI chemo-sensitivity and determining the underlying molecular circuitry involved. We first observed that miR-495-3p expression was lower in BCR-ABL1-expressing cellular models in vitro. Notably, loss-of-function experiments showed increased proliferation associated with a decreased number of nondividing cells (G0/G1) and resistance to Imatinib. Conversely, our data showed that miR-495-3p overexpression hindered leukemic cell growth and TKI resistance in Imatinib-resistant T315I-mutant cells, as well as drug efflux activity through MDR1 regulation. Further investigating the role of miR-495-3p in CML patients, we found that predicted miR-495-3p targets were upregulated in patients in blast crisis that were involved in protein phosphorylation and associated with the worst prognosis. Taken together, our results demonstrate that downregulation of miR-495-3p expression is important in the malignant phenotype of CML and TKI resistance mechanisms and could be a useful biomarker and a potential therapeutic target to eradicate CML.
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MESH Headings
- Humans
- Imatinib Mesylate/pharmacology
- Fusion Proteins, bcr-abl/genetics
- Fusion Proteins, bcr-abl/metabolism
- Tyrosine Protein Kinase Inhibitors
- Protein Kinase Inhibitors/pharmacology
- Protein Kinase Inhibitors/therapeutic use
- Cell Line, Tumor
- Drug Resistance, Neoplasm/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- MicroRNAs/genetics
- MicroRNAs/metabolism
- Drug Resistance, Multiple
- Adenosine Triphosphate
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Affiliation(s)
- Yutthana Rittavee
- INSERM UMRS-1310, Paris Saclay University, Villejuif, France; ATIP/Avenir INSERM UMRS-1310, Paris Saclay University, Villejuif, France; Paris Saclay University, Faculty of Medicine, Kremlin-Bicêtre, France
| | - Jérôme Artus
- INSERM UMRS-1310, Paris Saclay University, Villejuif, France; ATIP/Avenir INSERM UMRS-1310, Paris Saclay University, Villejuif, France; Paris Saclay University, Faculty of Medicine, Kremlin-Bicêtre, France
| | - Christophe Desterke
- INSERM UMRS-1310, Paris Saclay University, Villejuif, France; Paris Saclay University, Faculty of Medicine, Kremlin-Bicêtre, France; INGESTEM National iPSC Infrastructure, Villejuif, France; INGESTEM National iPSC Infrastructure, Villejuif, France
| | - Isidora Simanic
- INSERM UMRS-1310, Paris Saclay University, Villejuif, France; ATIP/Avenir INSERM UMRS-1310, Paris Saclay University, Villejuif, France
| | - Lucas Eduardo Botelho de Souza
- INSERM UMRS-1310, Paris Saclay University, Villejuif, France; ATIP/Avenir INSERM UMRS-1310, Paris Saclay University, Villejuif, France
| | - Sandra Riccaldi
- INSERM UMRS-1310, Paris Saclay University, Villejuif, France; ATIP/Avenir INSERM UMRS-1310, Paris Saclay University, Villejuif, France
| | - Sabrina Coignard
- INSERM UMRS-1310, Paris Saclay University, Villejuif, France; ATIP/Avenir INSERM UMRS-1310, Paris Saclay University, Villejuif, France
| | - Yousef Ijjeh
- INSERM UMRS-1310, Paris Saclay University, Villejuif, France; ATIP/Avenir INSERM UMRS-1310, Paris Saclay University, Villejuif, France
| | - Patricia Hugues
- INSERM UMRS-1310, Paris Saclay University, Villejuif, France; ATIP/Avenir INSERM UMRS-1310, Paris Saclay University, Villejuif, France
| | - Annelise Bennaceur-Griscelli
- INSERM UMRS-1310, Paris Saclay University, Villejuif, France; Paris Saclay University, Faculty of Medicine, Kremlin-Bicêtre, France; APHP Paris Saclay, Department of Hematology, Hôpital Bicêtre and Paul Brousse, Villejuif, France; INGESTEM National iPSC Infrastructure, Villejuif, France; CITHERA, Centre for IPSC Therapies, INSERM UMS-45, Paris Saclay University, Genopole, Evry, France
| | - Ali G Turhan
- INSERM UMRS-1310, Paris Saclay University, Villejuif, France; Paris Saclay University, Faculty of Medicine, Kremlin-Bicêtre, France; APHP Paris Saclay, Department of Hematology, Hôpital Bicêtre and Paul Brousse, Villejuif, France; INGESTEM National iPSC Infrastructure, Villejuif, France; CITHERA, Centre for IPSC Therapies, INSERM UMS-45, Paris Saclay University, Genopole, Evry, France
| | - Adlen Foudi
- INSERM UMRS-1310, Paris Saclay University, Villejuif, France; ATIP/Avenir INSERM UMRS-1310, Paris Saclay University, Villejuif, France; Paris Saclay University, Faculty of Medicine, Kremlin-Bicêtre, France.
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Feng Y, Wang C, Shi T, Liu W, Liu H, Zhu B, Gao F. Enhancer of zeste homolog 2 exerts functions in gastric cancer development via modulating microRNA-222-3p methylation and WEE1 expression. Chem Biol Drug Des 2022; 100:320-333. [PMID: 35765903 DOI: 10.1111/cbdd.14110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 04/12/2022] [Accepted: 06/26/2022] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Enhancer of zeste homolog 2 (EZH2) has been studied in gastric cancer (GC), while the role of EZH2 in GC via binding to microRNA (miR)-222-3p remains obscure. This research aims to unravel the regulatory mechanism of EZH2 in GC progression via the modulation of miR-222-3p/WEE1 axis. METHODS Initially, EZH2, miR-222-3p and WEE1 levels in GC cells and tissues were examined. Thereafter, vectors altering EZH2, miR-222-3p or WEE1 expression were transfected into GC cells to determine the malignant behaviors involved in tumorigenesis of GC cells. Finally, the targeting relations among EZH2, miR-222-3p and WEE1 were validated. RESULTS EZH2 and WEE1 were up-regulated while miR-222-3p was down-regulated in GC tissues and cells. The decreased EZH2, silenced WEE1, or restored miR-222-3p constrained the malignant behaviors involved in tumorigenesis of GC cells. Deletion of miR-222-3p could reverse the effect of silenced EZH2 on suppressing the biological functions of GC cells. EZH2 could bind to the promoter of miR-222-3p, and there was a targeting relationship between miR-222-3p and WEE1. CONCLUSION Our study demonstrates that EZH2 promotes GC development via the modulation of miR-222-3p/WEE1 axis, thus providing promising therapeutic targets for GC therapy.
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Affiliation(s)
- Yan Feng
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, Xinjiang, China
| | - Chun Wang
- Department of Pathology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, Xinjiang, China
| | - Tian Shi
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, Xinjiang, China
| | - Weidong Liu
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, Xinjiang, China
| | - Huan Liu
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, Xinjiang, China
| | - Bo Zhu
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, Xinjiang, China
| | - Feng Gao
- Department of Gastroenterology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, Xinjiang, China
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Role of miRNA-495 and NRXN-1 and CNTN-1 mRNA Expression and Its Prognostic Importance in Breast Cancer Patients. JOURNAL OF ONCOLOGY 2021; 2021:9657071. [PMID: 34659414 PMCID: PMC8519670 DOI: 10.1155/2021/9657071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 09/12/2021] [Indexed: 01/06/2023]
Abstract
Breast cancer is a heterogeneous disease in which genetic factors are involved in disease worsening and higher mortality. Epidemiological and clinical research revealed that breast cancer incidence continues to rise. 100 histopathologically confirmed untreated newly diagnosed cases of invasive ductal carcinoma (IDC) of breast and 100 healthy subjects were involved and blood samples were collected in non-EDTA plain vials. Serum was separated by centrifugation, total RNA was extracted from serum, and cDNA synthesis was done to study the miRNA-495 and neurexin-1 (NRXN-1) and contactin 1 (CNTN-1) mRNA expression by QRT-PCR. The expression levels of miRNA-495, NRXN-1, and CNTN-1 were expressed in fold change. The present study observed decreased relative miRNA-495 expression (0.07-fold) while an increase in NRXN-1 (11.61-fold) and CNTN-1 (4.92-fold) was observed among breast cancer patients compared to healthy controls. A significant difference was observed in miRNA-495 expression with menopausal status (p=0.0001) and TNM stages (p=0.02). It was observed that NRXN-1 expression was significantly associated with menopausal status (p=0.03), lymph node involvement (p < 0.0001), estrogen receptor (ER) status (p=0.03), progesterone receptor (PR) status (p=0.005), TNM stages (p < 0.0001), and distant metastases (p < 0.0001). CNTN-1 expression was also found to be associated with lymph node involvement (p=0.01), PR status (p=0.03), HER2 status (p=0.04), TNM stages (p < 0.0001), and distant metastases (p < 0.0001). ROC suggested that NRXN-1 and CNTN-1 could be the important predictive marker for disease advancement and distant organ metastases. The study concluded that the decreased expression of miR-495 observed in breast cancer patients showed a negative correlation with NRXN-1 while the increased expression of NRXN-1 and CNTN-1 was linked with disease advancement and distant metastases and could be the important predictive marker for breast cancer patients.
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Clerici SP, Oliveira PFDS, Akagi EM, Cordeiro HG, Azevedo-Martins JM, Faria AVDS, Ferreira-Halder CV. A comprehensive review on the role of protein tyrosine phosphatases in gastric cancer development and progression. Biol Chem 2021; 402:663-674. [PMID: 33544466 DOI: 10.1515/hsz-2020-0355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/15/2021] [Indexed: 12/09/2022]
Abstract
The main post-translational reversible modulation of proteins is phosphorylation and dephosphorylation, catalyzed by protein kinases (PKs) and protein phosphatases (PPs) which is crucial for homeostasis. Imbalance in this crosstalk can be related to diseases, including cancer. Plenty of evidence indicates that protein tyrosine phosphatases (PTPs) can act as tumor suppressors and tumor promoters. In gastric cancer (GC), there is a lack of understanding of the molecular aspects behind the tumoral onset and progression. Here we describe several members of the PTP family related to gastric carcinogenesis. We discuss the associated molecular mechanisms which support the down or up modulation of different PTPs. We emphasize the Helicobacter pylori (H. pylori) virulence which is in part associated with the activation of PTP receptors. We also explore the involvement of intracellular redox state in response to H. pylori infection. In addition, some PTP members are under influence by genetic mutations, epigenetics mechanisms, and miRNA modulation. The understanding of multiple aspects of PTPs in GC may provide new targets and perspectives on drug development.
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Affiliation(s)
- Stefano Piatto Clerici
- Department of Biochemistry and Tissue Biology, University of Campinas, UNICAMP, Rua Monteiro Lobato 255, 13083-862Campinas, São Paulo, Brazil
| | | | - Erica Mie Akagi
- Department of Biochemistry and Tissue Biology, University of Campinas, UNICAMP, Rua Monteiro Lobato 255, 13083-862Campinas, São Paulo, Brazil
| | - Helon Guimarães Cordeiro
- Department of Biochemistry and Tissue Biology, University of Campinas, UNICAMP, Rua Monteiro Lobato 255, 13083-862Campinas, São Paulo, Brazil
| | - Jordana Maria Azevedo-Martins
- Department of Biochemistry and Tissue Biology, University of Campinas, UNICAMP, Rua Monteiro Lobato 255, 13083-862Campinas, São Paulo, Brazil
| | - Alessandra Valéria de Sousa Faria
- Department of Biochemistry and Tissue Biology, University of Campinas, UNICAMP, Rua Monteiro Lobato 255, 13083-862Campinas, São Paulo, Brazil
| | - Carmen Veríssima Ferreira-Halder
- Department of Biochemistry and Tissue Biology, University of Campinas, UNICAMP, Rua Monteiro Lobato 255, 13083-862Campinas, São Paulo, Brazil
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Overexpression of miR-217-5p protects against oxygen-glucose deprivation/reperfusion-induced neuronal injury via inhibition of PTEN. Hum Cell 2020; 33:1026-1035. [PMID: 32683553 DOI: 10.1007/s13577-020-00396-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 06/25/2020] [Indexed: 02/07/2023]
Abstract
Ischemic stroke is characterized by loss of brain function because of cerebral ischemia. Evidence has been shown that miR-217-5p is significantly downregulated in infarcted brain areas following focal cerebral ischemia. However, the role of miR-217-5p in ischemic stroke is still unclear. To mimic ischemia/reperfusion (I/R) injury conditions in vitro, SH-SY5Y cells were treated with oxygen-glucose deprivation/reperfusion (OGD/R). Our data found that PTEN was the directly target of miR-217-5p in SH-SY5Y cells. The level of miR-217-5p was significantly decreased, while the level of PTEN was notably increased in SH-SY5Y cells following OGD/R treatment. Overexpression of miR-217-5p markedly promoted the proliferation and cell cycle progression, and inhibited apoptosis in OGD/R-treated SH-SY5Y cells. In addition, overexpression of miR-217-5p significantly decreased the expressions of PTEN and FOXO1, but increased the expression of p-Akt in OGD/R-treated SH-SY5Y cells. Moreover, methylation specific PCR (MSP) results indicated the CpG islands in the promoter region of miR-217-5p were hypermethylated in SH-SY5Y cells under OGD/R. Meanwhile, the DNA methylation of miR-217-5p promoter region decreased expression of miR-217-5p. Our data indicated that miR-217-5p could attenuate ischemic injury by inhibiting PTEN. In addition, DNA methylation-mediated silencing of miR-217-5p may serve as a promising therapeutic target of ischemic stroke.
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Luo SS, Liao XW, Zhu XD. Genome-wide analysis to identify a novel microRNA signature that predicts survival in patients with stomach adenocarcinoma. J Cancer 2019; 10:6298-6313. [PMID: 31772663 PMCID: PMC6856753 DOI: 10.7150/jca.33250] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 08/30/2019] [Indexed: 12/22/2022] Open
Abstract
Objective: Using genome-wide screening, this study was aimed at identifying prognostic microRNA (miRNA) in those patients suffering from stomach adenocarcinoma (STAD). Methods: A genome-wide miRNA sequencing dataset and relevant STAD clinical information was obtained via The Cancer Genome Atlas (TCGA). Prognostic miRNA selection was carried out through a whole genome multivariate Cox regression model in order to establish a prognostic STAD signature. Results: Eleven miRNAs (hsa-mir-509-2, hsa-mir-3917, hsa-mir-495, hsa-mir-653, hsa-mir-3605, hsa-mir-2115, hsa-mir-1292, hsa-mir-137, hsa-mir-6511b-1, hsa-mir-145, and hsa-mir-138-2) were recognized as prognostic and used for the construction of a STAD prognostic signature. This signature exhibited good performance in predicting prognosis (adjusted P<0.0001, adjusted hazard ratio= 3.047, and 95% confidence interval=2.148-4.323). The time-dependent receiver operating characteristic examination exhibited area under curve values of 0.711, 0.697, 0.716, 0.733, 0.805, and 0.805, for 1-, 2-, 3-, 4-, 5-, and 10-year overall survival (OS) estimation, respectively. Comprehensive survival analysis suggests that the 11-miRNA prognostic signature acts as an independent feature of STAD prognosis and exhibits superior performance in OS prediction when compared to traditional clinical parameters. Furthermore, fourteen miRNA target genes were linked to STAD OS. These included SERPINE1, MLEC, ANGPT2, C5orf38, FZD7, MARCKS, PDGFD, DUSP6, IRS1, PSAT1, TENM3, TMEM127, BLMH, and TIRAP. Functional and gene set enrichment analysis suggested that target genes and the 11-miRNA prognostic signature were both participate in various biological processes and pathways, including the growth factor beta, Wnt, and Notch signaling pathways. Conclusions: By means of a genome-wide analysis, an 11-miRNA expression signature that may serve as an underlying prognostic indicator for those patients suffering from STAD has been identified and described here.
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Affiliation(s)
- Shan-Shan Luo
- Department of Gastrointestinal Surgery, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Xi-Wen Liao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Xiao-Dong Zhu
- Department of Radiation Oncology, Affiliated Tumor Hospital of Guangxi Medical University, Cancer Institute of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
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Ying Y, Mao Y, Yao M. NLRP3 Inflammasome Activation by MicroRNA-495 Promoter Methylation May Contribute to the Progression of Acute Lung Injury. MOLECULAR THERAPY. NUCLEIC ACIDS 2019; 18:801-814. [PMID: 31734560 PMCID: PMC6861628 DOI: 10.1016/j.omtn.2019.08.028] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 08/01/2019] [Accepted: 08/17/2019] [Indexed: 12/18/2022]
Abstract
Acute lung injury (ALI) is a pulmonary disorder that causes acute respiratory failure, thus leading to relative high mortality worldwide. However, the molecular mechanisms of ALI remain largely unknown. MicroRNA (miRNA)-dependent control of gene expression at a post-transcriptional level has been recently reported. Herein, we identify a candidate miRNA, miR-495, that affects the progression of ALI. Alveolar macrophages (NR8383) were treated with 1 μg/mL lipopolysaccharide (LPS) to establish a cell-injury model. Combined with the data from western blot, methylation-specific PCR, methylated DNA immunoprecipitation, and chromatin immunoprecipitation assays, NLRP3 inflammasome activation and methylation-dependent repression of miR-495 were found in LPS-exposed NR8383 cells. Dual-luciferase reporter gene assay and miR-495 gain-of-function experiments confirmed that NLRP3 was a target of miR-495. Next, the expression of miR-495 and NLRP3 was overexpressed or silenced to assess their effects on NLRP3 inflammasome activation, alveolar macrophage inflammation, and pyroptosis in vitro. As demonstrated, overexpressed miR-495 alleviated alveolar macrophage inflammation and pyroptosis and inhibited NLRP3 inflammasome activation by negatively regulating the NLRP3 gene. Consistently, elevated miR-495 alleviated lung injury and reduced the neutrophil infiltration and inflammation in rat models of LPS-induced ALI. Taken together, the data in our study demonstrated that methylation of the miR-495 promoter could downregulate miR-495, whose elevation could attenuate the activation of the NLRP3 inflammasome to protect against ALI, which provides novel therapeutic targets for ALI treatment.
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Affiliation(s)
- Youguo Ying
- Department of Intensive Care Unit, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201999, P.R. China
| | - Yong Mao
- Department of Intensive Care Unit, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201999, P.R. China
| | - Min Yao
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201999, P.R. China.
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Kim EG, Kim JO, Park HS, Ryu CS, Oh J, Jun HH, Kim JW, Kim NK. Genetic associations between the miRNA polymorphisms miR-130b (rs373001), miR-200b (rs7549819), and miR-495 (rs2281611) and colorectal cancer susceptibility. BMC Cancer 2019; 19:480. [PMID: 31117970 PMCID: PMC6532172 DOI: 10.1186/s12885-019-5641-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 04/26/2019] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Recent studies have extensively investigated the role of miRNAs in colorectal cancer (CRC), and several associations have been reported. In addition, single nucleotide polymorphisms (SNPs) in promoter regions of miRNAs have been shown to affect miRNA expression. Therefore, we aimed to analyze the effect of miRNA polymorphisms on CRC susceptibility. METHODS We conducted association studies on the relationships between the miRNA polymorphisms miR-130bT > C rs373001, miR-200bT > C rs7549819, and miR-495A > C rs2281611 and CRC with 472 CRC patients and 399 control subjects in Korea. RESULTS Multivariate logistic regressions of the CRC subgroups showed that the miR-495CC genotype associated with rectal cancer (AA+AC vs. CC; adjusted odds ratio (AOR) for CC, 1.592; 95% confidence interval (CI), 1.071-2.368; P = 0.022). The gene-environment combinatorial analysis showed that the combination of miR-495A > C and low plasma folate contributed to an increased risk of rectal cancer (AA+AC vs. CC; AOR for CC, 3.829; 95% CI, 1.577-9.300; P = 0.003). In the survival analysis, miR-200bT > C associated with CRC patient mortality (TT vs TC + CC; adjusted hazard ratio for TC + CC, 0.592; 95% CI, 0.373-0.940; P = 0.026). CONCLUSION In this study, we found that miR-200b and miR-495 polymorphisms are involved in CRC susceptibility and prognosis.
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Affiliation(s)
- Eun-Gyo Kim
- Department of Biomedical Science, College of Life Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, 13488 South Korea
| | - Jung Oh Kim
- Department of Biomedical Science, College of Life Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, 13488 South Korea
| | - Han Sung Park
- Department of Biomedical Science, College of Life Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, 13488 South Korea
| | - Chang Soo Ryu
- Department of Biomedical Science, College of Life Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, 13488 South Korea
| | - Jisu Oh
- Department of Internal Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam, 13496 South Korea
| | - Hak Hoon Jun
- Department of Surgery, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam, 13496 South Korea
| | - Jong Woo Kim
- Department of Surgery, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam, 13496 South Korea
| | - Nam Keun Kim
- Department of Biomedical Science, College of Life Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, 13488 South Korea
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11
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Tang L, Wen JB, Wen P, Li X, Gong M, Li Q. Long non-coding RNA LINC01314 represses cell migration, invasion, and angiogenesis in gastric cancer via the Wnt/β-catenin signaling pathway by down-regulating KLK4. Cancer Cell Int 2019; 19:94. [PMID: 31007611 PMCID: PMC6458728 DOI: 10.1186/s12935-019-0799-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 03/23/2019] [Indexed: 02/07/2023] Open
Abstract
Background In recent years, gastric cancer (GC) has become a major cause of mortality among various malignancies worldwide with high incidence rates. Long non-coding RNA (lncRNAs) may serve as oncogenes and tumor suppressors in cancers. Therefore, we investigated the effect of LINC01314 on the development of GC cells in relation to the Wnt/β-catenin signaling pathway. Methods Microarray data analysis was conducted to screen GC-related differentially expressed lncRNAs, followed by determination of the binding interaction between LINC01314 and kallikrein 4 (KLK4). Human GC cell line SGC-7901 was treated with over-expressed or silenced LINC01314 or KLK4 to investigate the mechanism LINC01314 affecting GC cellular activities. The levels of KLK4, Wnt-1, β-catenin, cyclin D1, N-cadherin and E-cadherin were measured, and cell invasion and migration were evaluated. Next, the tumor weight, micro-vessel density (MVD) and the expression of VEGF-C and VEGFR-3 in transplanted tumors were measured. Results LINC01314 was poorly expressed in GC cells and KLK4 was revealed to be a direct target gene of LINC01314. Overexpressed LINC01314 or silencing of KLK4 led to inhibited GC cell migration and invasion, corresponding to decreased Wnt-1, β-catenin, cyclin D1 and N-cadherin while increased E-cadherin. Also, in response to over-expression of LINC01314 or silencing of KLK4, tumor weight and the MVD of transplanted tumors were reduced and angiogenesis was suppressed, which was indicated by down-regulated positive expression of VEGF-C and VEGFR-3. Conclusion The findings indicated that over-expression of LINC01314 down-regulated KLK4 to inhibit the activation of the Wnt/β-catenin signaling pathway, thus suppressing migration, invasion, and angiogenesis in GC cells, which provides new insight for the treatment of GC.
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Affiliation(s)
- Lin Tang
- Department of Gastroenterology, Jiangxi Pingxiang People's Hospital, No. 8, Wugongshan Middle Road, Pingxiang, 337000 Jiangxi People's Republic of China
| | - Jian-Bo Wen
- Department of Gastroenterology, Jiangxi Pingxiang People's Hospital, No. 8, Wugongshan Middle Road, Pingxiang, 337000 Jiangxi People's Republic of China
| | - Ping Wen
- Department of Gastroenterology, Jiangxi Pingxiang People's Hospital, No. 8, Wugongshan Middle Road, Pingxiang, 337000 Jiangxi People's Republic of China
| | - Xing Li
- Department of Gastroenterology, Jiangxi Pingxiang People's Hospital, No. 8, Wugongshan Middle Road, Pingxiang, 337000 Jiangxi People's Republic of China
| | - Min Gong
- Department of Gastroenterology, Jiangxi Pingxiang People's Hospital, No. 8, Wugongshan Middle Road, Pingxiang, 337000 Jiangxi People's Republic of China
| | - Qiang Li
- Department of Gastroenterology, Jiangxi Pingxiang People's Hospital, No. 8, Wugongshan Middle Road, Pingxiang, 337000 Jiangxi People's Republic of China
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12
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Misso G, Zarone MR, Lombardi A, Grimaldi A, Cossu AM, Ferri C, Russo M, Vuoso DC, Luce A, Kawasaki H, Di Martino MT, Virgilio A, Festa A, Galeone A, De Rosa G, Irace C, Donadelli M, Necas A, Amler E, Tagliaferri P, Tassone P, Caraglia M. miR-125b Upregulates miR-34a and Sequentially Activates Stress Adaption and Cell Death Mechanisms in Multiple Myeloma. MOLECULAR THERAPY. NUCLEIC ACIDS 2019; 16:391-406. [PMID: 31009917 PMCID: PMC6479071 DOI: 10.1016/j.omtn.2019.02.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 02/26/2019] [Accepted: 02/26/2019] [Indexed: 12/12/2022]
Abstract
miR-125b, ubiquitously expressed and frequently dysregulated in several tumors, has gained special interest in the field of cancer research, displaying either oncogenic or oncosuppressor potential based on tumor type. We have previously demonstrated its tumor-suppressive role in multiple myeloma (MM), but the analysis of molecular mechanisms needs additional investigation. The purpose of this study was to explore the effects of miR-125b and its chemically modified analogs in modulating cell viability and cancer-associated molecular pathways, also focusing on the functional aspects of stress adaptation (autophagy and senescence), as well as programmed cell death (apoptosis). Based on the well-known low microRNA (miRNA) stability in therapeutic application, we designed chemically modified miR-125b mimics, laying the bases for their subsequent investigation in in vivo models. Our study clearly confirmed an oncosuppressive function depending on the repression of multiple targets, and it allowed the identification, for the first time, of miR-125b-dependent miR-34a stimulation as a possible consequence of the inhibitory role on the interleukin-6 receptor (IL-6R)/signal transducer and activator of transcription 3 (STAT3)/miR-34a feedback loop. Moreover, we identified a pattern of miR-125b-co-regulated miRNAs, shedding light on possible new players of anti-MM activity. Finally, functional studies also revealed a sequential activation of senescence, autophagy, and apoptosis, thus indicating, for the first two processes, an early cytoprotective and inhibitory role from apoptosis activation.
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Affiliation(s)
- Gabriella Misso
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli," 80138 Naples, Italy.
| | - Mayra Rachele Zarone
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli," 80138 Naples, Italy
| | - Angela Lombardi
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli," 80138 Naples, Italy
| | - Anna Grimaldi
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli," 80138 Naples, Italy
| | - Alessia Maria Cossu
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli," 80138 Naples, Italy; IRGS, Biogem, Molecular and Precision Oncology Laboratory, Via Camporeale, 83031 Ariano Irpino, Italy
| | - Carmela Ferri
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli," 80138 Naples, Italy
| | - Margherita Russo
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli," 80138 Naples, Italy
| | - Daniela Cristina Vuoso
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli," 80138 Naples, Italy
| | - Amalia Luce
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli," 80138 Naples, Italy
| | - Hiromichi Kawasaki
- Drug Discovery Laboratory, Wakunaga Pharmaceutical Co., Ltd., Hiroshima, Japan
| | - Maria Teresa Di Martino
- Department of Experimental and Clinical Medicine, University Magna Græcia of Catanzaro, Salvatore Venuta University Campus, 88100 Catanzaro, Italy.
| | - Antonella Virgilio
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy
| | - Agostino Festa
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli," 80138 Naples, Italy
| | - Aldo Galeone
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy
| | - Giuseppe De Rosa
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy
| | - Carlo Irace
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy
| | - Massimo Donadelli
- Department of Neurosciences, Biomedicine and Movement Sciences, Section of Biochemistry, University of Verona, Verona, Italy
| | - Alois Necas
- CEITEC - Central European Institute of Technology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
| | - Evzen Amler
- Second Medical Faculty, Charles University in Prague, Prague, Czech Republic
| | - Pierosandro Tagliaferri
- Department of Experimental and Clinical Medicine, University Magna Græcia of Catanzaro, Salvatore Venuta University Campus, 88100 Catanzaro, Italy
| | - Pierfrancesco Tassone
- Department of Experimental and Clinical Medicine, University Magna Græcia of Catanzaro, Salvatore Venuta University Campus, 88100 Catanzaro, Italy
| | - Michele Caraglia
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli," 80138 Naples, Italy; IRGS, Biogem, Molecular and Precision Oncology Laboratory, Via Camporeale, 83031 Ariano Irpino, Italy.
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13
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Wu S, Yan W, Qiu B, Liao Y, Gu J, Wei S, Zhang A, Pan X. Aberrant methylation-induced dysfunction of p16 is associated with osteoblast activation caused by fluoride. ENVIRONMENTAL TOXICOLOGY 2019; 34:37-47. [PMID: 30259626 DOI: 10.1002/tox.22655] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 08/29/2018] [Accepted: 08/30/2018] [Indexed: 05/19/2023]
Abstract
Chronic exposure to fluoride continues to be a public health problem worldwide, affecting thousands of people. Fluoride can cause abnormal proliferation and activation of osteoblast and osteoclast, leading to skeletal fluorosis that can cause pain and harm to joints and bones and even lead to permanent disability. Nevertheless, there is no recognized mechanism to explain the bone lesions of fluorosis. In this work, we performed a population study and in vitro experiments to investigate the pathogenic mechanism of skeletal fluorosis in relation to methylation of the promoter of p16. The protein coded by the p16 gene inhibits cdk (cyclin-dependent kinase) 4/cdk6-mediated phosphorylation4 of retinoblastoma gene product and induces cell cycle arrest. The results showed that hypermethylation of p16 and reduced gene expression was evident in peripheral blood mononuclear cells of patients with fluorosis and correlated with the level of fluoride exposure. Studies with cell cultures of osteoblasts revealed in response to sodium fluoride (NaF) treatment, there was an induction of p16 hypermethylation and decreased expression, leading to increased cell proliferation, a longer S-phase of the cell cycle, and development of skeletal fluorosis. Further, the methylation inhibitor, 5-aza-2-deoxycytidine, reversed the p16 hypermethylation and expression in response to NaF. These results reveal a regulatory role of p16 gene methylation on osteoblasts activation during the development of skeletal fluorosis.
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Affiliation(s)
- Shouli Wu
- School of Public Health, Guizhou Medical University, Guiyang, China
| | - Weimin Yan
- School of Public Health, Guizhou Medical University, Guiyang, China
| | - Bing Qiu
- Guizhou Orthopedics Hospital, Guiyang, China
| | | | - Junying Gu
- School of Clinical Laboratory Science, Guizhou Medical University, Guiyang, China
| | - Shaofeng Wei
- School of Public Health, Guizhou Medical University, Guiyang, China
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Aihua Zhang
- School of Public Health, Guizhou Medical University, Guiyang, China
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Xueli Pan
- School of Public Health, Guizhou Medical University, Guiyang, China
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14
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Sun J, Qiao Y, Song T, Wang H. MiR‑495 suppresses cell proliferation by directly targeting HMGA2 in lung cancer. Mol Med Rep 2018; 19:1463-1470. [PMID: 30569167 PMCID: PMC6390076 DOI: 10.3892/mmr.2018.9773] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 10/01/2018] [Indexed: 12/28/2022] Open
Abstract
The present study aimed to investigate the expression of microRNA-495 (miR-495) in non-small cell lung cancer (NSCLC) tissues and cells, as well as its function on the proliferation of lung cancer cells. The expression of miR-495 in 122 pairs of NSCLC tissues and matched paracarcinoma tissues, as well as in human lung cancer cell lines (A549, H460, H1650, H520 and SK-MES-1) and the normal human pulmonary bronchial epithelial cell line 16HBE was determined using reverse transcription quantitative polymerase chain reaction (RT-qPCR). As predicted by bioinformatics analysis, high mobility group A2 (HMGA2) may be a potential target gene of miR-495. In addition, the regulatory function of miR-495 on its target gene HMGA2 was evaluated using a dual-luciferase reporter assay, RT-qPCR and western blotting. Furthermore, the effect of miR-495 on the proliferation of A549 lung cancer cells was investigated using a Cell Counting Kit-8 (CCK-8) assay. The results demonstrated that the expression of miR-495 in NSCLC tissues and cells was significantly downregulated compared with the control. In addition, downregulated expression of miR-495 was associated with tumor differentiation, lymph node metastasis and tumor, node and metastasis staging. Additionally, a dual-luciferase reporter assay revealed that miR-495 could directly associated with the 3′-untranslated region of HMGA2. Upregulated expression of miR-495 significantly downregulated the mRNA and protein expression levels of HMGA2 in A549 cells. Furthermore, the results of CCK-8 assay revealed that upregulated expression of miR-495 significantly suppressed the proliferation of A549 cells; HMGA2 overexpression reversed this inhibition. In summary, the findings of the present study demonstrated that miR-495 was downregulated in NSCLC tissues and cells. In addition, miR-495 suppressed the proliferation of lung cancer cells by directly targeting HMGA2.
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Affiliation(s)
- Jiangtao Sun
- Department of Oncology, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
| | - Yanping Qiao
- Department of Hematology, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
| | - Tao Song
- Department of Endocrinology, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
| | - Haiwen Wang
- Department of Cardio‑Thoracic Surgery, Weihai Central Hospital, Weihai, Shandong 264400, P.R. China
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15
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Wang X, Ren M, Li Y, Hu J, Lu G, Ma W, Guo D, Lu X, He S. Long noncoding RNA NNT-AS1 promotes gastric cancer proliferation and invasion by regulating microRNA-363 expression. J Cell Biochem 2018; 120:5704-5712. [PMID: 30324628 DOI: 10.1002/jcb.27855] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 09/19/2018] [Indexed: 01/01/2023]
Abstract
Increasing studies showed that long noncoding RNAs (lncRNAs) had crucial regulatory roles in various tumors, including gastric cancer (GC). Recent studies demonstrated that lncRNA nicotinamide nucleotide transhydrogenase-antisense RNA1 (NNT-AS1) played an important role in several tumors. However, the role and expression of NNT-AS1 in GC progression remain unknown. In our study, we indicated that NNT-AS1 expression was upregulated in GC samples compared with the nontumor tissues. We also showed that NNT-AS1 expression was upregulated in the GC cell lines. Ectopic expression of NNT-AS1 promoted GC cell line HGC-27 cell proliferation, cell cycle progression, and invasion. In addition, we showed that NNT-AS1 acted as a sponge competing endogenous RNA for microRNA-363 (miR-363), which was downregulated in the GC samples and cell lines. miR-363 expression was negatively related with NNT-AS1 expression in GC samples. Upregulated expression of miR-363 suppressed GC cell growth, cycle, and invasion. Furthermore, we reported that elevated expression of NNT-AS1 promoted GC cell proliferation, cycle, and invasion partly by suppressing miR-363 expression. These results indicated that lncRNA NNT-AS1 acted as an oncogene in the development of GC partly by inhibiting miR-363 expression.
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Affiliation(s)
- Xin Wang
- Department of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Mudan Ren
- Department of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yarui Li
- Department of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Junbi Hu
- Department of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Guifang Lu
- Department of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Wenhui Ma
- Department of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Dan Guo
- Department of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xinlan Lu
- Department of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Shuixiang He
- Department of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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16
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Yang MF, Lou YL, Liu SS, Wang SS, Yin CH, Cheng XH, Huang OP. Capn4 overexpression indicates poor prognosis of ovarian cancer patients. J Cancer 2018; 9:304-309. [PMID: 29344277 PMCID: PMC5771338 DOI: 10.7150/jca.22004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 10/24/2017] [Indexed: 12/19/2022] Open
Abstract
Recent studies have shown a close correlation between Capn4 expression and the prognosis of patients with solid tumors. This study aimed to investigate clinical role of Capn4 in ovarian cancer. The expression of Capn4 in 113 ovarian cancer and 35 non-tumor tissue samples were detected by quantitative real-time polymerase chain reaction (qRT-PCR). Capn4 expression was significantly upregulated in ovarian cancer tissues compared with non-tumor tissues (p < 0.01), and was positively correlated to FIGO stage, tumor grade and distant metastasis of ovarian cancer. Kaplan-Meier analysis indicated that patients with high Capn4 expression had shorter overall survival (HR = 1.929, 95%CI: 1.210-3.077, P= 0.006) and progress-free survival (PFS) (HR = 2.043, 95%CI: 1.276-3.271, P= 0.003). Moreover, univariate Cox regression analysis demonstrated that Capn4 overexpression was an unfavorable prognostic factor for ovarian cancer (HR = 2.819, 95%CI: 1.365-3.645, P = 0.003). After the adjustment with age, histological type and tumor size, multivariate Cox regression analysis showed that Capn4 expression level (HR = 2.157,95%CI: 1.091-3.138, P = 0.014), distant metastasis (HR = 1.576, 95%CI: 1.025-3.012, P = 0.028), tumor grade (HR = 1.408, 95%CI: 0.687-2.884, P = 0.037), and FIGO stage (HR = 1.791, 95%CI: 1.016-3.158, P=0.036) were independent poor prognostic indicators for ovarian cancer. In conclusion, Capn4 has the potential as a new prognostic marker for patients with ovarian cancer.
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Affiliation(s)
- Ming-Fang Yang
- Department of Obstetrics and Gynecology, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Yuan-Lei Lou
- Institute of Urology, Nanchang University, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Si-Sun Liu
- Department of Obstetrics and Gynecology, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Shan-Shan Wang
- Department of Pathology, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Chun-Hua Yin
- Department of Obstetrics and Gynecology, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Xiao-Hua Cheng
- Department of Pharmacy, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Ou-Ping Huang
- Department of Obstetrics and Gynecology, Jiangxi Maternal and Child Health Hospital, Nanchang 330006, China
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17
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Eun JW, Kim HS, Shen Q, Yang HD, Kim SY, Yoon JH, Park WS, Lee JY, Nam SW. MicroRNA-495-3p functions as a tumor suppressor by regulating multiple epigenetic modifiers in gastric carcinogenesis. J Pathol 2017; 244:107-119. [PMID: 28991363 DOI: 10.1002/path.4994] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 08/18/2017] [Accepted: 10/03/2017] [Indexed: 02/06/2023]
Abstract
MicroRNAs (miRNAs) engage in complex interactions with the machinery that controls the transcriptome and concurrently target multiple mRNAs. Here, we demonstrate that microRNA-495-3p (miR-495-3p) functions as a potent tumor suppressor by governing ten oncogenic epigenetic modifiers (EMs) in gastric carcinogenesis. From the large cohort transcriptome datasets of gastric cancer (GC) patients available from The Cancer Genome Atlas (TCGA) and the National Center for Biotechnology Information (NCBI) Gene Expression Omnibus (GEO), we were able to recapitulate 15 EMs as significantly overexpressed in GC among the 51 EMs that were previously reported to be involved in cancer progression. Computational target prediction yielded miR-495-3p, which targets as many as ten of the 15 candidate oncogenic EMs. Ectopic expression of miRNA mimics in GC cells caused miR-495-3p to suppress ten EMs, and inhibited tumor cell growth and proliferation via caspase-dependent and caspase-independent cell death processing. In addition, in vitro metastasis assays showed that miR-495-3p plays a role in the metastatic behavior of GC cells by regulating SLUG, vimentin, and N-cadherin. Furthermore, treatment of GC cells with 5-aza-2'-deoxcytidine restored miR-495-3p expression; sequence analysis revealed hypermethylation of the miR-495-3p promoter region in GC cells. A negative regulatory loop is proposed, whereby DNMT1, among ten oncogenic EMs, regulates miR-495-3p expression via hypermethylation of the miR-495-3p promoter. Our findings suggest that the functional loss or suppression of miR-495-3p triggers overexpression of multiple oncogenic EMs, and thereby contributes to malignant transformation and growth of gastric epithelial cells. Copyright © 2017 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Jung Woo Eun
- Laboratory of Oncogenomics, Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Functional RNomics Research Center, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyung Seok Kim
- Laboratory of Oncogenomics, Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Functional RNomics Research Center, The Catholic University of Korea, Seoul, Republic of Korea
| | - Qingyu Shen
- Laboratory of Oncogenomics, Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Functional RNomics Research Center, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hee Doo Yang
- Laboratory of Oncogenomics, Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Functional RNomics Research Center, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang Yean Kim
- Laboratory of Oncogenomics, Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Functional RNomics Research Center, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jung Hwan Yoon
- Laboratory of Oncogenomics, Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Functional RNomics Research Center, The Catholic University of Korea, Seoul, Republic of Korea
| | - Won Sang Park
- Laboratory of Oncogenomics, Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Functional RNomics Research Center, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jung Young Lee
- Laboratory of Oncogenomics, Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Functional RNomics Research Center, The Catholic University of Korea, Seoul, Republic of Korea
| | - Suk Woo Nam
- Laboratory of Oncogenomics, Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Functional RNomics Research Center, The Catholic University of Korea, Seoul, Republic of Korea.,Cancer Evolution Research Center, The Catholic University of Korea, Seoul, Republic of Korea
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18
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Tian Z, Zhou H, Xu Y, Bai J. MicroRNA-495 Inhibits New Bone Regeneration via Targeting High Mobility Group AT-Hook 2 (HMGA2). Med Sci Monit 2017; 23:4689-4698. [PMID: 28963864 PMCID: PMC5633066 DOI: 10.12659/msm.904404] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background MicroRNAs play critical roles in post-translational gene expression. In this study, we explored the role of miR-495 in new bone regeneration. Material/Methods Murine calvarial osteoblasts were isolated and cultured. Microarray was performed to identify differential miRNAs in medicarpin-induced osteoblasts differentiation. Luciferase reporter assay was performed to identify the target gene of miRNA. Murine osteoblast cells were transfected with miC, miR-495, or anti-miR-495. CCK-8 and flow cytometry were performed to detect osteoblasts proliferation and apoptosis. Western blot was used to analyze apoptosis-related proteins. qRT-PCR analysis was performed to detect gene expression. ALP activity and mineralized nodule formation test were used to evaluate bone formation. Dill-hole injury model was constructed and micro CT was utilized to measuring bone healing. Results Microarray analysis identified miR-495 as our miRNA of interest and luciferase reporter assay identified HMGA2 as its target gene. Over-expression of miR-495 significantly inhibited ALP activity and mineralized nodule formation as well as the expression of RUNX-2, BMP-2, and Osterix. Also, miR-495 over-expression inhibited osteoblasts proliferation and promoted apoptosis obviously. In this in vivo study, the downregulation of miR-495 promoted murine femur healing. Conclusions MiR-495 inhibits new bone regeneration via targeting high mobility group AT-Hook 2 (HMGA2). We propose that targeting miR-495 may be a promising therapeutic approach for bone regeneration.
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Affiliation(s)
- Zhao Tian
- Department of Hand Surgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi, China (mainland)
| | - Haizhen Zhou
- Department of Hand Surgery, Honghui Hospital, Xi'an Jiaotong University College of Medcine, Xi'an, Shaanxi, China (mainland)
| | - Yuben Xu
- Department of Hand Surgery, Honghui Hospital, Xi'an Jiaotong University College of Medcine, Xi'an, Shaanxi, China (mainland)
| | - Jie Bai
- Department of Hand Surgery, Honghui Hospital, Xi'an Jiaotong University College of Medcine, Xi'an, Shaanxi, China (mainland)
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19
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MiRNA-target network analysis identifies potential biomarkers for Traditional Chinese Medicine (TCM) syndrome development evaluation in hepatitis B caused liver cirrhosis. Sci Rep 2017; 7:11054. [PMID: 28887510 PMCID: PMC5591282 DOI: 10.1038/s41598-017-11351-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 08/21/2017] [Indexed: 12/13/2022] Open
Abstract
Hepatitis B is one of most etiologies of Liver cirrhosis in China, and clinically lacks the effective strategy for Hepatitis B caused cirrhosis (HBC) therapy. As a complementary and alternative medicine, Chinese Traditional Medicine (TCM) has special therapeutic effects for HBC. Here, we focus on the evolution process of HBC TCM syndromes, which was from Excessive (Liver-Gallbladder Dampness-Heat Syndrome, LGDHS) to Deficient (Liver-Kidney Deficiency Syndrome, LKYDS) via Excessive-Deficient syndrome (Liver-Depression and Spleen-Deficiency Syndrome, LDSDS). Using R package, 16 miRNAs in LGDHS/Normal, 48 miRNAs in LDSDS/LGDHS, and 16 miRNAs in LKYDS/LDSDS were identified, respectively. The miRNA-target networks show that the LDSDS was most stability and complicated. Subsequently, 4 kernel miRNAs with LGDHS-LDSDS process, and 5 kernel miRNAs with LDSDS-LKYDS process were screened. Using RT-qPCR data, p1 (hsa-miR-17-3p, -377-3p, -410-3p and -495) and p2 miRNA panel (hsa-miR-377-3p, -410-3p, -27a-3p, 149-5p and 940) were identified by Logistic Regression Model, which clearly improve the accuracy of TCM syndrome classification. The rebuilt miRNA-target network shows that the LDSDS is a critical point and might determine the evolution directions of HBC TCM syndrome. This study suggests that the identified kernel miRNAs act as potential biomarkers and benefit to evaluate the evolution tendency of HBC TCM syndromes.
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Zhao K, Zhang Y, Kang L, Song Y, Wang K, Li S, Wu X, Hua W, Shao Z, Yang S, Yang C. Epigenetic silencing of miRNA-143 regulates apoptosis by targeting BCL2 in human intervertebral disc degeneration. Gene 2017; 628:259-266. [DOI: 10.1016/j.gene.2017.07.043] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 07/07/2017] [Accepted: 07/13/2017] [Indexed: 12/18/2022]
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Regulatory mechanisms of phosphatase of regenerating liver (PRL)-3. Biochem Soc Trans 2017; 44:1305-1312. [PMID: 27911713 PMCID: PMC5095905 DOI: 10.1042/bst20160146] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 07/04/2016] [Accepted: 07/11/2016] [Indexed: 12/19/2022]
Abstract
The phosphatase of regenerating liver (PRL)-3 is overexpressed in many human cancer types and tumor metastases when compared with healthy tissues. Different pathways and mechanisms have been suggested to modulate PRL-3 expression levels and activity, giving some valuable insights but still leaving an incomplete picture. Investigating these mechanisms could provide new targets for therapeutic drug development. Here, we present an updated overview and summarize recent findings concerning the different PRL-3 expression regulatory mechanisms and posttranslational modifications suggested to modulate the activity, localization, or stability of this phosphatase.
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Jiang W, Zheng J, Yu T, Wang J. Overexpression of microRNA-495 suppresses the proliferation and invasion and induces the apoptosis of osteosarcoma cells by targeting high-mobility group nucleosome-binding domain 5. Oncol Rep 2017. [DOI: 10.3892/or.2017.5715] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Jin C, Li M, Ouyang Y, Tan Z, Jiang Y. MiR-424 functions as a tumor suppressor in glioma cells and is down-regulated by DNA methylation. J Neurooncol 2017; 133:247-255. [PMID: 28508328 DOI: 10.1007/s11060-017-2438-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 04/15/2017] [Indexed: 12/18/2022]
Abstract
Glioma is one of the most lethal malignancies, and increasing reports revealed that microRNAs (miRNAs), a class of small non-coding RNAs, play a critical role in the development and pathology of human gliomas. MiR-424 has been found to be dysregulated in many different types of human cancers. However, the clinical significance and function of miR-424 in glioma remains unclear. Here, based on RTq-PCR analysis in 148 clinical specimens, we found miR-424 expression was significantly decreased in glioma tumor tissues than in adjacent non-neoplastic brain tissues, and decreased miR-424 expression was associated with glioma KPS (P = 0.009) and high grades (P = 0.029). In vitro cellular function assays further revealed that miR-424 inhibited cell invasion and migration, and promoted cell apoptosis. In addition, based on DNA methylation analysis on clinical specimens and cell lines, we found miR-424 promoter CpG island was frequently methylated and correlated with glioma high grades (P = 0.035) and IDH mutation status (P = 0.042). Moreover, the promoter CpG island was demethylated by 5-aza-2'-deoxycytidine treatment in a time-dependent manner and the expression levels of miR-424 were gradually induced and increased. Taken together, our data suggest that the promoter region CpG island methylation is associated with tumor suppressive miR-424 silencing and the pathology of human gliomas.
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Affiliation(s)
- Chen Jin
- Department of Neurosurgery, The Second Xiangya Hospital of Central South University, 139 Renming Road, Changsha, 410011, Hunan, People's Republic of China
| | - Minhong Li
- Department of Neurosurgery, The Second Xiangya Hospital of Central South University, 139 Renming Road, Changsha, 410011, Hunan, People's Republic of China
| | - Yian Ouyang
- Department of Neurosurgery, The Second Xiangya Hospital of Central South University, 139 Renming Road, Changsha, 410011, Hunan, People's Republic of China
| | - Zhigang Tan
- Department of Neurosurgery, The Second Xiangya Hospital of Central South University, 139 Renming Road, Changsha, 410011, Hunan, People's Republic of China
| | - Yugang Jiang
- Department of Neurosurgery, The Second Xiangya Hospital of Central South University, 139 Renming Road, Changsha, 410011, Hunan, People's Republic of China.
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Chen Y, Luo D, Tian W, Li Z, Zhang X. Demethylation of miR-495 inhibits cell proliferation, migration and promotes apoptosis by targeting STAT-3 in breast cancer. Oncol Rep 2017; 37:3581-3589. [PMID: 28498478 DOI: 10.3892/or.2017.5621] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 04/18/2017] [Indexed: 11/06/2022] Open
Abstract
In breast cancer (BC), silencing of miRNA genes due to miRNA gene promoter methylation are the important mechanisms directly contributing to tumorigenesis and tumor progression. miRNA-495 (miR-495) has been reported to be a tumor suppressor gene in various cancers, but its role and regulation in BC remains unclear. In the present study, the level of miR-495 was inversely correlated with the expression of STAT-3 in BC tissues and cell lines. miR-495 can directly target 3'-UTR of STAT-3 mRNA and thereby decrease the expression of STAT-3 in MCF-7 and HCC1973 cells by Targetscan and Dual-luciferase assay. We further analyzed miR-495 promoter methylation by sodium bisulfite sequencing method (BSP), and found DNA methyltransferase inhibitor, 5-AzaC concomitantly upregulated expression of miR-495 and downregulated its target gene STAT-3 and its downstream target VEGF. Furthermore, we further observed that 5-AzaC treatment, miR-495 mimics and STAT-3 knockdown significantly inhibited cell function in breast cancer by Transwell assay, EdU flow cytometry, Annexin V-FITC/PI combined with flow cytometry and Hoechst staining. Taken together, our data are first to demonstrate that the miR-495 is silenced due to promoter methylation in breast cancer. DNA methyltransferase inhibitor 5-AzaC could reverse miR‑495 (suppressor gene) and STAT-3 (oncogene). The anticancer properties of 5-AzaC were preliminarily confirmed in breast cancer.
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Affiliation(s)
- Yi Chen
- Department of General (Breast and Thyroid), Daping Hospital of the Third Military Medical University, No. 10 Yangtze River Branch, Yuzhong, Chongqing 400042, P.R. China
| | - Donglin Luo
- Department of General (Breast and Thyroid), Daping Hospital of the Third Military Medical University, No. 10 Yangtze River Branch, Yuzhong, Chongqing 400042, P.R. China
| | - Wuguo Tian
- Department of General (Breast and Thyroid), Daping Hospital of the Third Military Medical University, No. 10 Yangtze River Branch, Yuzhong, Chongqing 400042, P.R. China
| | - Zhirong Li
- Department of General (Breast and Thyroid), Daping Hospital of the Third Military Medical University, No. 10 Yangtze River Branch, Yuzhong, Chongqing 400042, P.R. China
| | - Xiaohua Zhang
- Department of General (Breast and Thyroid), Daping Hospital of the Third Military Medical University, No. 10 Yangtze River Branch, Yuzhong, Chongqing 400042, P.R. China
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Chen H, Wang X, Bai J, He A. Expression, regulation and function of miR-495 in healthy and tumor tissues. Oncol Lett 2017; 13:2021-2026. [PMID: 28454357 DOI: 10.3892/ol.2017.5727] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 11/04/2016] [Indexed: 01/14/2023] Open
Abstract
MicroRNA-495 (miR-495) is a small non-coding RNA encoded by a gene located on chromosome 14 (14q32.31). Its expression is regulated by the transcription factors EF12 and EF47, in addition to promoter methylation status and the fusion oncoprotein mixed-lineage leukemia-AF9. Previous studies suggest that miR-495 is involved in various developmental, immunological and inflammatory processes in healthy tissue, and in the proliferation, invasion, metastasis and drug resistance of cancer cells. The role miR-495 serves in tumors is controversial. miR-495 primarily functions as a tumor suppressor; however, in a number of cases it acts as an oncogene. miR-495 has potential applications as a diagnostic and prognostic marker, and as a therapeutic target for genetic and pharmacological manipulation in the treatment of various diseases.
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Affiliation(s)
- Hongli Chen
- Department of Hematology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Xiaman Wang
- Department of Hematology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Ju Bai
- Department of Hematology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Aili He
- Department of Hematology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China.,National-Local Joint Engineering Research Center of Biodiagnostics and Biotherapy, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
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Wang H, Jiang Z, Chen H, Wu X, Xiang J, Peng J. MicroRNA-495 Inhibits Gastric Cancer Cell Migration and Invasion Possibly via Targeting High Mobility Group AT-Hook 2 (HMGA2). Med Sci Monit 2017; 23:640-648. [PMID: 28159956 PMCID: PMC5304946 DOI: 10.12659/msm.898740] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Background Gastric cancer is one of the most common malignancies, and has a high mortality rate. miR-495 acts as a suppressor in some cancers and HMGA2 (high mobility group AT-hook 2) is a facilitator for cell growth and epithelial-mesenchymal transition (EMT), but little is known about their effect in gastric cancer. This study aimed to investigate the role and mechanism of miR-495 in gastric cancer. Material/Methods miR-495 levels were quantitatively analyzed in gastric cancer tissue and GES-1, SGC-7901, BGC-823, and HGC-27 cell lines by qRT-PCR. Levels of miR-495 and HMGA2 were altered by cell transfection, after which cell migration and invasion were examined by Transwell and E-cadherin (CDH1); vimentin (VIM), and alpha smooth muscle actin (ACTA2) were detected by qRT-PCR and Western blotting. The interaction between miR-495 and HMGA2 was verified by dual-luciferase reporter assay. Results miR-495 was significantly downregulated in cancer tissue and cell lines (p<0.05). Its overexpression inhibited cell migration and invasion, elevated CDH1, and inhibited VIM and ACTA2 levels in BGC-823 and HGC-27 cells. miR-495 directly inhibited HMGA2, which was upregulated in gastric cancer tissue, and promoted cell migration and invasion, inhibited CDH1, and elevated VIM and ACTA2. Conclusions miR-495 acts as a tumor suppressor in gastric cancer by inhibiting cell migration and invasion, which may be associated with its direct inhibition on HMGA2. These results suggest a promising therapeutic strategy for gastric cancer treatment.
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Affiliation(s)
- Huashe Wang
- Department of Gastrointestinal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China (mainland)
| | - Zhipeng Jiang
- Department of Gastrointestinal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China (mainland)
| | - Honglei Chen
- Department of Digestive Endoscopic Center, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China (mainland)
| | - Xiaobin Wu
- Department of Gastrointestinal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China (mainland)
| | - Jun Xiang
- Department of Gastrointestinal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China (mainland)
| | - Junsheng Peng
- Department of Gastrointestinal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China (mainland)
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Abstract
MicroRNAs (miRNAs) are small noncoding RNAs that regulate gene expression mainly at the posttranscriptional level. Similar to protein-coding genes, their expression is also controlled by genetic and epigenetic mechanisms. Disruption of these control processes leads to abnormal expression of miRNAs in cancer. In this chapter, we discuss the supportive links between miRNAs and epigenetics in the context of carcinogenesis. miRNAs can be epigenetically regulated by DNA methylation and/or specific histone modifications. However, they can themselves (epi-miRNAs) repress key enzymes that drive epigenetic remodeling and also bind to complementary sequences in gene promoters, recruiting specific protein complexes that modulate chromatin structure and gene expression. All these issues affect the transcriptional landscape of cells. Most important, in the cancer clinical scenario, knowledge about miRNAs epigenetic dysregulation can not only be beneficial as a prognostic biomarker, but can also help in the design of new therapeutic approaches.
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Affiliation(s)
- Catia Moutinho
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Catalonia, Spain
| | - Manel Esteller
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Catalonia, Spain; Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain; School of Medicine and Health Sciences, University of Barcelona (UB), Catalonia, Spain.
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Wu D, Cao G, Huang Z, Jin K, Hu H, Yu J, Zeng Y. Decreased miR-503 expression in gastric cancer is inversely correlated with serum carcinoembryonic antigen and acts as a potential prognostic and diagnostic biomarker. Onco Targets Ther 2016; 10:129-135. [PMID: 28096682 PMCID: PMC5207439 DOI: 10.2147/ott.s114303] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background Altered expression of miR-503 has been linked to human carcinogenesis. In this present study, we aimed to detect the potential for miR-503 as a novel biomarker for gastric cancer (GC) patients. Materials and methods The relative mRNA level of miR-503 in serum and tissue of 68 GC patients and serum of 32 healthy volunteers was determined by real-time reverse transcription quantitative polymerase chain reaction. Results The miR-503 level was significantly lower in the tissue and serum of GC than their counterparts (all P<0.01). Downregulation of miR-503 was found to be corrected with more aggressive tumor. Patients in the high-miR-503 group showed significantly better overall survival compared to the low-miR-503 group (P=0.021). The serum miR-503 level in GC was inversely correlated with carcinoembryonic antigen (CEA) (r=−0.624, P<0.001). Furthermore, the area under the receiver operating characteristic curve for miR-503 discriminating GC patients from healthy individuals was 0.889 (P=0.006), with a sensitivity of 96.8% and a specificity of 79.4%, higher than that of CEA (area under the receiver operating characteristic curve =0.681, P=0.048). Conclusion The present study suggests that the expression level of miR-503 may serve as prognostic and diagnostic biomarker for GC.
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Affiliation(s)
- Daoyi Wu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Wenzhou Medical University, Ruian, People's Republic of China
| | - Gaojian Cao
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Wenzhou Medical University, Ruian, People's Republic of China
| | - Zhenfeng Huang
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Wenzhou Medical University, Ruian, People's Republic of China
| | - Kai Jin
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Wenzhou Medical University, Ruian, People's Republic of China
| | - Haowei Hu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Wenzhou Medical University, Ruian, People's Republic of China
| | - Jie Yu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Wenzhou Medical University, Ruian, People's Republic of China
| | - Yu Zeng
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Wenzhou Medical University, Ruian, People's Republic of China
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Kang L, Yang C, Song Y, Liu W, Wang K, Li S, Zhang Y. MicroRNA-23a-3p promotes the development of osteoarthritis by directly targeting SMAD3 in chondrocytes. Biochem Biophys Res Commun 2016; 478:467-473. [DOI: 10.1016/j.bbrc.2016.06.071] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 06/14/2016] [Indexed: 02/09/2023]
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Zhou P, Jiang N, Zhang GX, Sun Q. MiR-203 inhibits tumor invasion and metastasis in gastric cancer by ATM. Acta Biochim Biophys Sin (Shanghai) 2016; 48:696-703. [PMID: 27542403 DOI: 10.1093/abbs/gmw063] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 05/25/2016] [Indexed: 12/11/2022] Open
Abstract
Gastric cancer is one of the most common malignancies in the world. A number of miRNAs are aberrantly expressed during the progression of gastric cancer. In this study, we aimed to investigate the role of miR-203 in the invasion and metastasis of gastric cancer and the potential mechanism of the effect of miR-203 on the tumor progression of gastric cancer. Our results showed that miR-203 was significantly downregulated in gastric cancer tissues and cells, while ataxia telangiectasia mutated kinase (ATM) was upregulated in gastric cancer tissues and cells and was directly regulated by miR-203. Ectopic overexpression of miR-203 inhibited the colony formation, migration, and invasion of gastric cancer cells. In addition, miR-203 overexpression significantly suppressed the protein level of Snail and obviously promoted the protein level of E-cadherin in gastric cancer cells. ATM knockdown phenocopied the effect of miR-203 overexpression. These results suggested that miR-203 suppressed the migration and invasion of gastric cancer through regulating the level of ATM-mediated-Snail and E-cadherin. MiR-203 might be a novel therapeutic strategy for the treatment of gastric cancer.
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Qin ZS, He SG. Influence of phosphatase of regenerating liver 3 on cell migration, invasion and expression of RhoC in SGC7901 cells. Shijie Huaren Xiaohua Zazhi 2016; 24:1797-1805. [DOI: 10.11569/wcjd.v24.i12.1797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To explore whether phosphatase of regenerating liver 3 (PRL-3) and RhoC belong to the same signal pathway in the mechanism of SGC7901 cell migration and invasion by observing the influence of PRL-3 on cell migration, invasion and the expression of RhoC in SGC7901 cells.
METHODS: Human gastric cancer SGC7901 cells were cultured in vitro and treated with different concentrations of PRL-3Ab (1:600, 1:400 and 1:200), then the migration distance of SGC7901 cells was assessed at different time points (0, 12, 24, 48 h) by wound healing assay, and the migration and invasion of SGC7901 cells were examined by Transwell assay at 48 h. The expression of RhoC mRNA and protein was detected by real-time PCR and ELISA.
RESULTS: Compared with the control group, the migration distance of SGC7901 cells at 12, 24 and 48 h decreased with the increase in PRL-3Ab concentration. At 48 h, the migration and invasion of SGC7901 cells and the expression of RhoC mRNA and protein in SGC7901 cells treated with different concentrations of PRL-3Ab (1:600, 1:400 and 1:200) were significantly lower than those in the control group (migration: 365.0 ± 5.0, 165.3 ± 5.0, 90.3 ± 5.5 vs 512.3 ± 4.9; invasion: 321.3 ± 6.1, 179.0 ± 6.1, 75.7 ± 4.0 vs 545.3 ± 5.0; expression of RhoC mRNA: 0.910 ± 0.022, 0.742 ± 0.018, 0.539 ± 0.015 vs 1.000 ± 0.000; expression of RhoC protein: 1130.77 g/mL ± 15.32 g/mL, 981.52 g/mL ± 14.44 g/mL, 893.03 g/mL ± 11.10 g/mL vs 1212.42 g/mL ± 18.37 g/mL; P < 0.01 for all).
CONCLUSION: PRL-3 can promote SGC7901 cell migration and invasion and raise the expression of RhoC, which suggests that PRL-3 and RhoC may belong to the same signal pathway in the mechanism of SGC7901 cell migration and invasion.
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Li W, Yang Y, Hou X, Zhuang H, Wu Z, Li Z, Guo R, Chen H, Lin C, Zhong W, Chen Y, Wu K, Zhang L, Feng D. MicroRNA-495 regulates starvation-induced autophagy by targeting ATG3. FEBS Lett 2016; 590:726-38. [PMID: 26910393 DOI: 10.1002/1873-3468.12108] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 01/31/2016] [Accepted: 02/08/2016] [Indexed: 12/21/2022]
Abstract
The functions of some essential autophagy genes are regulated by microRNAs. However, an ATG3-modulating microRNA has never been reported. Here we show that the transcription of miR-495 negatively correlates with the translation of ATG3 under nutrient-deprived or rapamycin-treated conditions. miR-495 targets ATG3 and regulates its protein levels under starvation conditions. miR-495 also inhibits starvation-induced autophagy by decreasing the number of autophagosomes and by preventing LC3-I-to-LC3-II transition and P62 degradation. These processes are reversed by the overexpression of an endogenous miR-495 inhibitor. Re-expression of Atg3 without miR-495 response elements restores miR-495-inhibited autophagy. miR-495 sustains cell viability under starvation conditions but has no effect under hypoxia. Moreover, miR-495 inhibits etoposide-induced cell death. In conclusion, miR-495 is involved in starvation-induced autophagy by regulating Atg3.
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Affiliation(s)
- Wen Li
- Guangdong Key Laboratory of Age-related Cardiac-cerebral Vascular Disease, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Yue Yang
- Department of Anesthesiology, Guangdong Medical College, Zhanjiang, China
| | - Xiaoyan Hou
- Guangdong Key Laboratory of Age-related Cardiac-cerebral Vascular Disease, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Haixia Zhuang
- Department of Anesthesiology, Guangdong Medical College, Zhanjiang, China
| | - Zijun Wu
- Department of Cardiovasology, the Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Zhiyi Li
- Department of Anesthesiology, Guangdong Medical College, Zhanjiang, China
| | - Runmin Guo
- Department of Cardiovasology, the Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Hao Chen
- Guangdong Key Laboratory of Age-related Cardiac-cerebral Vascular Disease, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Chunxia Lin
- Guangdong Key Laboratory of Age-related Cardiac-cerebral Vascular Disease, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Wangtao Zhong
- Guangdong Key Laboratory of Age-related Cardiac-cerebral Vascular Disease, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Yusen Chen
- Guangdong Key Laboratory of Age-related Cardiac-cerebral Vascular Disease, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Keng Wu
- Department of Cardiovasology, the Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
| | - Liangqing Zhang
- Department of Anesthesiology, Guangdong Medical College, Zhanjiang, China
| | - Du Feng
- Guangdong Key Laboratory of Age-related Cardiac-cerebral Vascular Disease, Institute of Neurology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China
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Xiong JB, Li DJ, Jie ZG, Chen HP, Li ZR. Role of phosphatase of regenerating liver 3 in gastric carcinoma. Shijie Huaren Xiaohua Zazhi 2016; 24:59-66. [DOI: 10.11569/wcjd.v24.i1.59] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Gastric carcinoma is one of the most common malignancies worldwide and remains the third leading cause of cancer death in both sexes worldwide. Phosphatase of regenerating liver 3 (PRL-3) is a tyrosine phosphatase that has been reported to be overexpressed in gastric tissues and play an important role in lymphatic metastasis and peritoneal metastasis of gastric carcinoma. It has also been reported that PRL-3 has a negative relationship with the prognosis of gastric carcinoma patients. More and more researchers have focused on the regulatory mechanism of PRL-3 in gastric carcinoma, aiming to elucidate the possible pathway and influencing factors. However, the exact mechanism of PRL-3 in promoting lymphatic metastasis, peritoneal metastasis and recurrence of gastric cancer is unknown. This paper will review the role of PRL-3 in gastric carcinoma with regard to its structure, function and possible mechanism in gastric carcinoma development.
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Tuna M, Machado AS, Calin GA. Genetic and epigenetic alterations of microRNAs and implications for human cancers and other diseases. Genes Chromosomes Cancer 2015; 55:193-214. [PMID: 26651018 DOI: 10.1002/gcc.22332] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Revised: 10/27/2015] [Accepted: 10/28/2015] [Indexed: 12/15/2022] Open
Abstract
MicroRNAs (miRNAs) are a well-studied group of noncoding RNAs that control gene expression by interacting mainly with messenger RNA. It is known that miRNAs and their biogenesis regulatory machineries have crucial roles in multiple cell processes; thus, alterations in these genes often lead to disease, such as cancer. Disruption of these genes can occur through epigenetic and genetic alterations, resulting in aberrant expression of miRNAs and subsequently of their target genes. This review focuses on the disruption of miRNAs and their key regulatory machineries by genetic alterations, with emphasis on mutations and epigenetic changes in cancer and other diseases.
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Affiliation(s)
- Musaffe Tuna
- Department of Epidemiology, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Andreia S Machado
- Department of Experimental Therapeutics, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - George A Calin
- Department of Experimental Therapeutics, The University of Texas, MD Anderson Cancer Center, Houston, TX
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Yang Q, Zhang RW, Sui PC, He HT, Ding L. Dysregulation of non-coding RNAs in gastric cancer. World J Gastroenterol 2015; 21:10956-10981. [PMID: 26494954 PMCID: PMC4607897 DOI: 10.3748/wjg.v21.i39.10956] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 08/28/2015] [Accepted: 09/15/2015] [Indexed: 02/07/2023] Open
Abstract
Gastric cancer (GC) is one of the most common cancers in the world and a significant threat to the health of patients, especially those from China and Japan. The prognosis for patients with late stage GC receiving the standard of care treatment, including surgery, chemotherapy and radiotherapy, remains poor. Developing novel treatment strategies, identifying new molecules for targeted therapy, and devising screening techniques to detect this cancer in its early stages are needed for GC patients. The discovery of non-coding RNAs (ncRNAs), primarily microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), helped to elucidate the mechanisms of tumorigenesis, diagnosis and treatment of GC. Recently, significant research has been conducted on non-coding RNAs and how the regulatory dysfunction of these RNAs impacts the tumorigenesis of GC. In this study, we review papers published in the last five years concerning the dysregulation of non-coding RNAs, especially miRNAs and lncRNAs, in GC. We summarize instances of aberrant expression of the ncRNAs in GC and their effect on survival-related events, including cell cycle regulation, AKT signaling, apoptosis and drug resistance. Additionally, we evaluate how ncRNA dysregulation affects the metastatic process, including the epithelial-mesenchymal transition, stem cells, transcription factor activity, and oncogene and tumor suppressor expression. Lastly, we determine how ncRNAs affect angiogenesis in the microenvironment of GC. We further discuss the use of ncRNAs as potential biomarkers for use in clinical screening, early diagnosis and prognosis of GC. At present, no ideal ncRNAs have been identified as targets for the treatment of GC.
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Ni ZT, Liu WT, Yang QM, Yan M, Zhu ZG. State-of-the-art methods in clinical diagnosis and treatment of peritoneal metastasis of gastric cancer. Shijie Huaren Xiaohua Zazhi 2015; 23:2843-2853. [DOI: 10.11569/wcjd.v23.i18.2843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Gastric cancer is one of the most common malignant tumors and presents a very high mortality. The main reason for this situation is metastasis after curative resection, with the most common type being peritoneal metastasis, which accounts for more than 50% of all cases. Once peritoneal carcinomatosis (PC) happens, the pathological stage is stage IV and there is a grim prognosis. Accordingly, early effective prevention and treatment of PC have extremely important clinical significance for the improvement of the prognosis of patients with gastric cancer. This article describes the pathogenesis, clinical diagnosis using serum biomarkers and image examinations, as well as multimodality treatment of peritoneal metastasis of gastric cancer by neoadjuvant intraperitoneal-systemic chemotherapy (NIPS), cytoreductive surgery+hyperthermic intraperitoneal chemotherapy (CRS+HIPEC), early postoperative intraperitoneal chemotherapy (EPIC), extensive intraoperative peritoneal lavage (EIPL), molecular targeting therapy, and usage of drug delivery systems.
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