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Kober P, Mossakowska BJ, Rusetska N, Baluszek S, Grecka E, Konopiński R, Matyja E, Oziębło A, Mandat T, Bujko M. Epigenetic Downregulation of Hsa-miR-193b-3p Increases Cyclin D1 Expression Level and Cell Proliferation in Human Meningiomas. Int J Mol Sci 2023; 24:13483. [PMID: 37686289 PMCID: PMC10487813 DOI: 10.3390/ijms241713483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/21/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023] Open
Abstract
Meningiomas are common intracranial tumors in adults. Abnormal microRNA (miRNA) expression plays a role in their pathogenesis. Change in miRNA expression level can be caused by impaired epigenetic regulation of miRNA-encoding genes. We found the genomic region covering the MIR193B gene to be DNA hypermethylated in meningiomas based on analysis of genome-wide methylation (HumanMethylation450K Illumina arrays). Hypermethylation of MIR193B was also confirmed via bisulfite pyrosequencing. Both hsa-miR-193b-3p and hsa-miR-193b-5p are downregulated in meningiomas. Lower expression of hsa-miR-193b-3p and higher MIR193B methylation was observed in World Health Organization (WHO) grade (G) II/III tumors as compared to GI meningiomas. CCND1 mRNA was identified as a target of hsa-miR-193b-3p as further validated using luciferase reporter assay in IOMM-Lee meningioma cells. IOMM-Lee cells transfected with hsa-miR-193b-3p mimic showed a decreased cyclin D1 level and lower cell viability and proliferation, confirming the suppressive nature of this miRNA. Cyclin D1 protein expression (immunoreactivity) was higher in atypical than in benign meningiomas, accordingly to observations of lower hsa-miR-193b-3p levels in GII tumors. The commonly observed hypermethylation of MIR193B in meningiomas apparently contributes to the downregulation of hsa-miR-193b-3p. Since hsa-miR-193b-3p regulates proliferation of meningioma cells through negative regulation of cyclin D1 expression, it seems to be an important tumor suppressor in meningiomas.
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Affiliation(s)
- Paulina Kober
- Department of Molecular and Translational Oncology, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Beata Joanna Mossakowska
- Department of Molecular and Translational Oncology, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Natalia Rusetska
- Department of Experimental Immunology, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland (R.K.)
| | - Szymon Baluszek
- Department of Molecular and Translational Oncology, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Emilia Grecka
- Department of Molecular and Translational Oncology, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Ryszard Konopiński
- Department of Experimental Immunology, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland (R.K.)
| | - Ewa Matyja
- Department of Experimental and Clinical Neuropathology, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland
| | - Artur Oziębło
- Department of Neurosurgery, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Tomasz Mandat
- Department of Neurosurgery, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
| | - Mateusz Bujko
- Department of Molecular and Translational Oncology, Maria Sklodowska-Curie National Research Institute of Oncology, 02-781 Warsaw, Poland
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Biomarkers of Response and Resistance to CDK4/6 Inhibitors in Breast Cancer: Hints from Liquid Biopsy and microRNA Exploration. Int J Mol Sci 2022; 23:ijms232314534. [PMID: 36498861 PMCID: PMC9739115 DOI: 10.3390/ijms232314534] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/16/2022] [Accepted: 11/19/2022] [Indexed: 11/23/2022] Open
Abstract
New evidence on the impact of dysregulation of the CDK4/6 pathway on breast cancer (BC) cell proliferation has led to the development of selective CDK4/6 inhibitors, which have radically changed the management of advanced BC. Despite the improved outcomes obtained by CDK4/6 inhibitors, approximately 10% of tumors show primary resistance, whereas acquired resistance appears to be an almost ubiquitous occurrence, leading to treatment failure. The identification of differentially expressed genes or genomic mutational signatures able to predict sensitivity or resistance to CDK4/6 inhibitors is critical for medical decision making and for avoiding or counteracting primary or acquired resistance against CDK4/6 inhibitors. In this review, we summarize the main mechanisms of resistance to CDK4/6 inhibitors, focusing on those associated with potentially relevant biomarkers that could predict patients' response/resistance to treatment. Recent advances in biomarker identification are discussed, including the potential use of liquid biopsy for BC management and the role of multiple microRNAs as molecular predictors of cancer cell sensitivity and resistance to CDK4/6 inhibitors.
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Wang J, Zhang M, Hu X, She J, Sun R, Qin S, Li D. miRNA-194 predicts favorable prognosis in gastric cancer and inhibits gastric cancer cell growth by targeting CCND1. FEBS Open Bio 2021; 11:1814-1826. [PMID: 33605558 PMCID: PMC8255842 DOI: 10.1002/2211-5463.13125] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 01/13/2021] [Accepted: 02/18/2021] [Indexed: 11/23/2022] Open
Abstract
MicroRNAs (MiRNAs) play critical roles in regulating target gene expression and multiple cellular processes in human cancer malignant progression. However, the function of miR-194 in gastric cancer (GC) remains unclear and controversial. In this study, we identified a series of miRNAs that can serve as prognostic biomarkers for GC by analysis of miRNA expression using The Cancer Genome Atlas data. Among them, miR-100, miR-125b, miR-199a, and miR-194 were the four most promising prognostic biomarkers in GC due to their significant associations with various clinical characteristics of patients. miR-100, miR-125b, and miR-199a predicted poor prognosis in GC, while miR-194 predicted favorable prognosis in GC. We also provide the first comprehensive transcriptome analysis of miR-194 in GC. Our data suggest that miR-194 tends to regulate target genes by binding to their 3' UTRs in a 7-mer-A1, 7-mer-m8, or 8-mer manner. KEGG pathway analysis showed that the cell cycle was one of the pathways most affected by miR-194 in GC. Moreover, CCND1 was shown to be a novel target gene of miR-194 in GC. Additionally, downregulation of CCND1 by miR-194 in GC further led to cell growth inhibition and cell cycle arrest. In conclusion, miR-100, miR-125b, miR-199a, and miR-194 may have potential as prognostic and diagnostic biomarkers for GC. miR-194 suppresses GC cell growth mainly through targeting CCND1 and induction of cell cycle arrest.
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Affiliation(s)
- Jingjie Wang
- Hubei Key Laboratory of Embryonic Stem Cell ResearchSchool of Basic Medical SciencesHubei University of MedicineShiyanChina
- Laboratory of Tumor BiologySchool of Biomedical EngineeringHubei University of MedicineShiyanChina
| | - Meixin Zhang
- Hubei Key Laboratory of Embryonic Stem Cell ResearchSchool of Basic Medical SciencesHubei University of MedicineShiyanChina
| | - Xinhui Hu
- Hubei Key Laboratory of Embryonic Stem Cell ResearchSchool of Basic Medical SciencesHubei University of MedicineShiyanChina
| | - Jiajun She
- Hubei Key Laboratory of Embryonic Stem Cell ResearchSchool of Basic Medical SciencesHubei University of MedicineShiyanChina
| | - Ruonan Sun
- Hubei Key Laboratory of Embryonic Stem Cell ResearchSchool of Basic Medical SciencesHubei University of MedicineShiyanChina
| | - Shanshan Qin
- Hubei Key Laboratory of Embryonic Stem Cell ResearchSchool of Basic Medical SciencesHubei University of MedicineShiyanChina
- Laboratory of Tumor BiologySchool of Biomedical EngineeringHubei University of MedicineShiyanChina
| | - Dandan Li
- Hubei Key Laboratory of Embryonic Stem Cell ResearchSchool of Basic Medical SciencesHubei University of MedicineShiyanChina
- Laboratory of Tumor BiologySchool of Biomedical EngineeringHubei University of MedicineShiyanChina
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Gao J, Ma S, Yang F, Chen X, Wang W, Zhang J, Li Y, Wang T, Shan L. miR‑193b exhibits mutual interaction with MYC, and suppresses growth and metastasis of osteosarcoma. Oncol Rep 2020; 44:139-155. [PMID: 32377743 PMCID: PMC7254955 DOI: 10.3892/or.2020.7601] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Accepted: 02/19/2020] [Indexed: 12/14/2022] Open
Abstract
Emerging evidence has indicated that microRNAs (miRs) are involved in the malignant behavior of cancer. The present study explored the role of miR‑193b in the development and metastasis of osteosarcoma. Compared with F4 osteosarcoma cells, which have a relatively low metastatic potential, highly metastatic F5M2 cells exhibited a lower expression of miR‑193b. Furthermore, miR‑193b exerted negative effects on cell proliferation, colony formation, cell cycle progression, migration and invasion, and induced apoptosis. In vivo studies revealed negative influences of miR‑193b on tumorigenesis and metastasis. The tumor‑suppressive role of miR‑193b was achieved by targeting KRAS and stathmin 1 (STMN1). Notably, overexpression of KRAS and STMN1 attenuated the miR‑193b‑induced inhibition of malignant behaviors. There was a double‑negative regulatory loop between MYC and miR‑193b, with MYC inhibiting miR‑193b expression by directly binding to its promoter region and miR‑193b negatively influencing MYC expression indirectly through some unknown mechanism. Collectively, these findings indicated that miR‑193b may serve a tumor suppressive role in osteosarcoma by targeting KRAS and STMN1. The double‑negative regulatory loop between MYC and miR‑193b may contribute to the sustained upregulation of MYC, the downregulation of miR‑193b, and to the subsequently enhanced expression of KRAS and STMN1, which may eventually lead to the development and metastasis of osteosarcoma.
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Affiliation(s)
- Jinjian Gao
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, P.R. China
| | - Sai Ma
- Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Fan Yang
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Xu Chen
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Wei Wang
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Jianping Zhang
- Department of Orthopedics, Kunming General Hospital of Chengdu Military Command, Kunming, Yunnan 650032, P.R. China
| | - Yufang Li
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Tao Wang
- Department of Immunology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Lequn Shan
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, P.R. China
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Zhu M, Zhao W, Zhao H, Zhang J. Diagnostic and prognostic value of microRNA-193b in patients with glioma and its effect on tumor progression. Oncol Lett 2019; 18:4882-4890. [PMID: 31611998 PMCID: PMC6781758 DOI: 10.3892/ol.2019.10819] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 08/08/2019] [Indexed: 12/13/2022] Open
Abstract
Emerging evidence has indicated the important roles of microRNAs (miRs) in the pathogenesis of cancer in humans. The present study sought to assess the expression patterns of miR-193b in patients with glioma, and investigated its clinical significance and biological function in this disease. The expression of miR-193b in the serum, tissues and cells of patients with glioma was analyzed using reverse transcription-quantitative PCR. Its diagnostic value was evaluated using the receiver operating characteristic (ROC) curve analysis, and its prognostic value was analyzed using Kaplan-Meier survival and Cox regression analyses. Experiments on glioma cells were conducted to explore the influence of miR-193b on proliferation, migration and invasion. Increased expression of miR-193b was observed in serum, tissues and cells of patients with glioma compared with the corresponding controls (all P<0.05). miR-193b expression was associated with the World Health Organization grading and the Karnofsky Performance Scale of the patients (all P<0.05). The area under the curve of the ROC analysis of miR-193b was 0.903, indicating its high diagnostic accuracy for glioma. High expression of miR-193b was associated with poor overall survival rate in patients (P=0.002). Therefore, miR-193b is a potential independent prognostic factor in glioma. Furthermore, the overexpression of this miR in glioma cells led to increased proliferation, migration and invasion, whereas its inhibition resulted in the opposite effects on these cell behaviors (all P<0.05). Thus, the findings from the present study indicate that the overexpression of miR-193b serves as a useful biomarker for the diagnosis and prediction of prognosis in glioma. The upregulation of miR-193b expression may enhance glioma progression, and may therefore be a potential target for glioma therapy.
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Affiliation(s)
- Mingtao Zhu
- Department of Neurosurgery, Xinglin Branch of The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
| | - Wei Zhao
- Department of Neurosurgery, Heze Municipal Hospital, Heze, Shandong 274031, P.R. China
| | - Hui Zhao
- Department of Pharmacology, Heze Medical College, Heze, Shandong 274000, P.R. China
| | - Jing Zhang
- Department of Neurosurgery, Heze Municipal Hospital, Heze, Shandong 274031, P.R. China
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Edwards VL, Smith SB, McComb EJ, Tamarelle J, Ma B, Humphrys MS, Gajer P, Gwilliam K, Schaefer AM, Lai SK, Terplan M, Mark KS, Brotman RM, Forney LJ, Bavoil PM, Ravel J. The Cervicovaginal Microbiota-Host Interaction Modulates Chlamydia trachomatis Infection. mBio 2019; 10:e01548-19. [PMID: 31409678 PMCID: PMC6692509 DOI: 10.1128/mbio.01548-19] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 07/09/2019] [Indexed: 12/02/2022] Open
Abstract
The mechanism(s) by which Lactobacillus-dominated cervicovaginal microbiota provide a barrier to Chlamydia trachomatis infection remain(s) unknown. Here we evaluate the impact of different Lactobacillus spp. identified via culture-independent metataxonomic analysis of C. trachomatis-infected women on C. trachomatis infection in a three-dimensional (3D) cervical epithelium model. Lactobacillus spp. that specifically produce d(-) lactic acid were associated with long-term protection against C. trachomatis infection, consistent with reduced protection associated with Lactobacillus iners, which does not produce this isoform, and with decreased epithelial cell proliferation, consistent with the observed prolonged protective effect. Transcriptomic analysis revealed that epigenetic modifications involving histone deacetylase-controlled pathways are integral to the cross talk between host and microbiota. These results highlight a fundamental mechanism whereby the cervicovaginal microbiota modulates host functions to protect against C. trachomatis infection.IMPORTANCE The vaginal microbiota is believed to protect women against Chlamydia trachomatis, the etiologic agent of the most prevalent sexually transmitted infection (STI) in developed countries. The mechanism underlying this protection has remained elusive. Here, we reveal the comprehensive strategy by which the cervicovaginal microbiota modulates host functions to protect against chlamydial infection, thereby providing a novel conceptual mechanistic understanding. Major implications of this work are that (i) the impact of the vaginal microbiota on the epithelium should be considered in future studies of chlamydial infection and other STIs and (ii) a fundamental understanding of the cervicovaginal microbiota's role in protection against STIs may enable the development of novel microbiome-based therapeutic strategies to protect women from infection and improve vaginal and cervical health.
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Affiliation(s)
- Vonetta L Edwards
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Steven B Smith
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Elias J McComb
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Jeanne Tamarelle
- Biostatistics, Biomathematics, Pharmacoepidemiology and Infectious Diseases, Institut Pasteur, INSERM, Université de Versailles-Saint-Quentin-en-Yvelines, Versailles, France
| | - Bing Ma
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Michael S Humphrys
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Pawel Gajer
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Kathleen Gwilliam
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Alison M Schaefer
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Samuel K Lai
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Mishka Terplan
- Department of Obstetrics and Gynecology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Katrina S Mark
- Department of Obstetrics and Gynecology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Rebecca M Brotman
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Larry J Forney
- Department of Biological Sciences, University of Idaho, Moscow, Idaho, USA
| | - Patrik M Bavoil
- Department of Microbial Pathogenesis, University of Maryland School of Dentistry, Baltimore, Maryland, USA
| | - Jacques Ravel
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
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Xu LN, Jin LN. Effect of down-regulation of miR-221 on cell proliferation and cisplatin sensitivity in cisplatin-resistant gastric cancer cells and underlying mechanism. Shijie Huaren Xiaohua Zazhi 2019; 27:857-863. [DOI: 10.11569/wcjd.v27.i14.857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Patients with advanced gastric cancer (GC) usually undergo chemotherapy as the primary treatment. However, the effectiveness of chemotherapy is often limited by the development of drug resistance in GC cells. This study aimed to investigate the expression pattern, biological role, and potential mechanism of microRNA-221 (miR-221) in cisplatin (DDP)-resistant GC cells, in order to provide a reference for clinical treatment of this malignancy.
AIM To investigate the effect of down-regulation of miR-221 on cell proliferation and DDP sensitivity in DDP-resistant GC cells and to explore the underlying mechanism.
METHODS AGS and MGC-803 cells were screened for DDP-resistant cells (AGS/DDP and MGC-803/DDP). The expression levels of miR-221 in GC tissues, matched tumor adjacent tissues, DDP-sensitive tissues, DDP-resistant tissues, GC cells, and DDP-resistant GC cells were detected by RT-PCR. After AGS/DDP and MGC-803/DDP cells were transfected with LV-miR-221-shRNA, cell proliferation and DDP sensitivity in those cells were measured by MTT assay, cell apoptosis was detected by Annexin V-FITC/PI staining, and the mRNA and protein expression of CCND1 was detected by RT-qPCR and Western blot, respectively. The potential target genes of miR-221 were predicted by bioinformatics analysis.
RESULTS The expression of miR-221 was up-regulated in GC tissues and gastric cells, especially in DDP-resistant tissues and DDP-resistant GC cells. Down-regulation of miR-221 inhibited the proliferation of AGS/DDP and MGC-803/DDP cells, but increased their apoptosis and chemosensitivity to DDP. CCND1 was found to be a direct target gene of miR-221. Transfection with LV-miR-221-shRNA inhibited the mRNA and protein expression of CCND1.
CONCLUSION Down-regulation of miR-221 can inhibit cell proliferation and promote chemosensitivity to DDP in DDP-resistant GC cells, which may be achieved by inhibiting the expression of its target gene CCND1.
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Affiliation(s)
- Li-Na Xu
- Department of Pharmacy, Taizhou Hospital, Taizhou Grace Medical Center (Group), Taizhou 317000, Zhejiang Province, China
| | - Li-Na Jin
- Department of Pharmacy, Taizhou Hospital, Taizhou Grace Medical Center (Group), Taizhou 317000, Zhejiang Province, China
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Wang M, Yu W, Gao J, Ma W, Frentsch M, Thiel A, Liu M, Rahman N, Qin Z, Li X. MicroRNA‐487a‐3p functions as a new tumor suppressor in prostate cancer by targeting CCND1. J Cell Physiol 2019; 235:1588-1600. [PMID: 31309555 DOI: 10.1002/jcp.29078] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 06/21/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Mingming Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University Beijing China
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences China Agricultural University Beijing China
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University Guangzhou China
| | - Wanpeng Yu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University Beijing China
| | - Jun Gao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University Beijing China
| | - Wenqiang Ma
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University Beijing China
| | - Macro Frentsch
- Regenerative Immunology and Aging, Berlin‐Brandenburger Center for Regenerative Therapies (BCRT) Charité Universitätsmedizin Berlin Berlin Germany
| | - Andreas Thiel
- Regenerative Immunology and Aging, Berlin‐Brandenburger Center for Regenerative Therapies (BCRT) Charité Universitätsmedizin Berlin Berlin Germany
| | - Mei Liu
- Department of Pathology Chinese PLA General Hospital Beijing China
| | - Nafis Rahman
- Department of Physiology, Institute of Biomedicine University of Turku Turku Finland
| | - Zhihai Qin
- Institute of Biophysics Chinese Academy of Sciences Beijing China
| | - Xiangdong Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University Beijing China
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences China Agricultural University Beijing China
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University Guangzhou China
- Department of Reproduction and Gynecological Endocrinology Medical University of Bialystok Bialystok Poland
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Östling H, Kruse R, Helenius G, Lodefalk M. Placental expression of microRNAs in infants born small for gestational age. Placenta 2019; 81:46-53. [PMID: 31138431 DOI: 10.1016/j.placenta.2019.05.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 03/22/2019] [Accepted: 05/01/2019] [Indexed: 12/22/2022]
Abstract
INTRODUCTION The molecular mechanisms behind poor foetal growth are not fully known. The aim of this study was to explore global microRNA expression in placentas of infants born small for gestational age (SGA) compared to infants with a normal birth weight (NBW). METHODS Placental biopsies from term infants were identified in a biobank and divided into four groups: infants born SGA with (n = 13) or without (n = 9) exposure to low maternal gestational weight gain (GWG) and infants born with NBWs with (n = 20) or without (n = 26) exposure to low GWG. All women and infants were healthy, and no woman smoked during pregnancy. Only vaginal deliveries were included. Next-generation sequencing was performed with single read sequencing of >9 million reads per sample. Differential microRNA expression was analysed using ANOVA for unequal variances (Welch) with multiple testing corrections through the Benjamini-Hochberg method. A fold change >2 and a corrected p value < 0.05 were considered significant. Adjustments for possible confounding factors were made using a linear regression model. RESULTS A total of 1870 known, mature human microRNAs were detected in the sample. MiR-3679-5p and miR-193b-3p were significantly upregulated, and miR-379-3p, miR-335-3p, miR-4532, miR-519e-3p, miR-3065-5p, and miR-105-5p were significantly downregulated after adjustment for potential confounding factors in SGA infants with normal GWG compared to infants with NBWs and normal GWG. DISCUSSION Infants born unexplained SGA show differential microRNA expression in their placenta. Important pathways for the differentially expressed microRNAs include inflammation and the insulin-IGF system.
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Affiliation(s)
- H Östling
- Department of Obstetrics and Gynecology, School of Medical Sciences, Örebro University, SE-701 82, Örebro, Sweden
| | - R Kruse
- Department of Clinical Research Laboratory, Faculty of Medicine and Health, Örebro University, SE-701 82, Örebro, Sweden
| | - G Helenius
- Department of Laboratory Medicine, Faculty of Medicine and Health, SE-701 82, Örebro University, Örebro, Sweden
| | - M Lodefalk
- Department of Pediatrics, School of Medical Sciences, Örebro University, SE-701 82, Örebro, Sweden; University Health Care Research Center, Faculty of Medicine and Health, Örebro University, SE-701 82, Örebro, Sweden.
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Cheng X, Wang X, Wu Z, Tan S, Zhu T, Ding K. CORO1C expression is associated with poor survival rates in gastric cancer and promotes metastasis in vitro. FEBS Open Bio 2019; 9:1097-1108. [PMID: 30974047 PMCID: PMC6551501 DOI: 10.1002/2211-5463.12639] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 03/13/2019] [Accepted: 04/08/2019] [Indexed: 12/21/2022] Open
Abstract
Coronin-like actin-binding protein 1C (CORO1C) is a member of the WD repeat protein family that regulates actin-dependent processes by assembling F-actin. CORO1C was previously reported to promote metastasis in breast cancer and lung squamous cell carcinoma. Here, we investigated the role of CORO1C in gastric cancer. Higher expression levels of CORO1C were detected in gastric cancer tissues as compared with normal gastric tissues. In addition, CORO1C levels were found to be positively correlated with lymph node metastasis in gastric cancer patients. The expression levels of CORO1C were higher in stage III-IV gastric cancer patients (80.8%) than in stage I-II gastric cancer patients(57.1%). Gastric cancer patients positive for CORO1C expression showed lower relapse-free survival and overall survival rates. Knockdown of CORO1C dramatically suppressed total cell number, cell viability, cell colony formation, cell mitosis and cell metastasis, and promoted apoptosis of gastric cancer cells. Furthermore, cyclin D1 and vimentin were found to be positively regulated by CORO1C. As cyclin D1 and vimentin play an oncogenic role in gastric cancer, CORO1C may exert its tumor-promoting activity through these proteins.
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Affiliation(s)
- Xiao Cheng
- Department of Pathology, Anhui Medical University, Hefei, China
| | - Xiaonan Wang
- Laboratory of Pathogenic Microbiology and Immunology, Anhui Medical University, Hefei, China
| | - Zhengsheng Wu
- Department of Pathology, Anhui Medical University, Hefei, China
| | - Sheng Tan
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, China
| | - Tao Zhu
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, China
| | - Keshuo Ding
- Department of Pathology, Anhui Medical University, Hefei, China
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11
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Zhang J, Niu J, Tian B, Zhao M. microRNA-193b protects against myocardial ischemia-reperfusion injury in mouse by targeting mastermind-like 1. J Cell Biochem 2019; 120:14088-14094. [PMID: 30993760 DOI: 10.1002/jcb.28684] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 02/09/2019] [Accepted: 02/14/2019] [Indexed: 12/25/2022]
Abstract
The current study aimed to explore the functions and roles of microRNA-193b (miR-193b) in the myocardium with ischemia-reperfusion (I/R) injury and a potential therapeutic method for myocardial I/R injury. The mice were subjected to myocardial I/R with or without miR-193b pretreatment. The infarct size and myocardial enzymes were detected. The terminal deoxynucleotidyl transferase dUTP nick-end labeling assay was conducted to investigate the effect of miR-193b on cardiomyocyte apoptosis. The expression levels of miR-193b and mastermind-like 1 (MAML1) were validated by quantitative real-time polymerase chain reaction and Western blot analysis. The results suggested that the miR-193b expression level was significantly downregulated in the myocardium with I/R injury compared with control group. miR-193b overexpression is able to reduce infarct size and myocardial enzymes after myocardial I/R injury. Furthermore, overexpression of miR-193b could alleviate the apoptosis level after myocardial I/R injury. Taken together, the present study demonstrated that upregulated miRNA-193b alleviated myocardial I/R injury via targeting MAML1.
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Affiliation(s)
- Jinzhu Zhang
- Department of Cardiovascular Medicine, Linyi Central Hospital, Linyi, Shandong, China
| | - Jingjing Niu
- Department of Cardiovascular Medicine, Linyi Central Hospital, Linyi, Shandong, China
| | - Baoqing Tian
- Department of Cardiovascular Medicine, Linyi Central Hospital, Linyi, Shandong, China
| | - Meng Zhao
- Department of Cardiovascular Medicine, Linyi Central Hospital, Linyi, Shandong, China
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12
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Wang H, Chen W, Yang P, Zhou J, Wang K, Tao Q. Knockdown of linc00152 inhibits the progression of gastric cancer by regulating microRNA-193b-3p/ETS1 axis. Cancer Biol Ther 2018; 20:461-473. [PMID: 30404587 PMCID: PMC6422511 DOI: 10.1080/15384047.2018.1529124] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 09/22/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Gastric cancer (GC) is a serious threat for public health worldwide. Long non-coding RNA (lncRNA) linc00152 has been well reported to be an oncogene and a potential biomarker in multiple cancers including GC. However, the molecular mechanisms of linc00152 in GC development need to be further investigated. METHODS RT-qPCR assay was employed to detect the levels of linc00152, microRNA-193b-3p (miR-193b-3p) and ETS1 mRNA. ETS1 protein level was measured by western blot assay. Cell proliferative, migratory and invasive capacities were assessed by colony formation together with CCK-8 assays, transwell migration and invasion assays, respectively. Bioinformatics analyses and luciferase reporter assay were used to explore whether miR-193b-3p could interact with linc00152 or ETS1 3'UTR. The roles and molecular basis of linc00152 silence on the growth of GC xenograft tumors were tested in vivo. RESULTS Linc00152 expression was notably upregulated in GC tissues and cells. The proliferative, migratory and invasive abilities of GC cells were weakened by linc00152 depletion, miR-193b-3p overexpression or ETS1 knockdown. Linc00152 upregulation inhibited miR-193b-3p expression by direct interaction and abolished miR-193b-3p-mediated anti-proliferation, anti-migration and anti-invasion effects in GC cells. ETS1 was a target of miR-193b-3p and linc00152 could promote ETS1 expression by downregulating miR-193b-3p. In vivo experiments further validated that linc00152 knockdown inhibited the growth of GC xenograft tumors by upregulating miR-193b-3p and downregulating ETS1. CONCLUSION Knockdown of linc00152 inhibited GC progression by sequestering miR-193b-3p from ETS1 in vitro and in vivo, elucidating a novel molecular mechanism of linc00152 in promoting GC carcinogenesis.
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Affiliation(s)
- Haifang Wang
- Department of Chinese and Western Integrative Medicine and Department of Clinical Laboratory, Beijing University of Chinese Medicine Third Affiliated Hospital, Beijing, China
| | - Wenxiang Chen
- Department of Spine Orthopaedics, Liaocheng Traditional Chinese Medicine hospital, Liaocheng, China
| | - Peng Yang
- Department of Chinese and Western Integrative Medicine and Department of Clinical Laboratory, Beijing University of Chinese Medicine Third Affiliated Hospital, Beijing, China
| | - Jun Zhou
- Department of Chinese and Western Integrative Medicine and Department of Clinical Laboratory, Beijing University of Chinese Medicine Third Affiliated Hospital, Beijing, China
| | - Kaiyuan Wang
- Chinese Medical Department of Internal respiration, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Qingchun Tao
- Department of Clinical Laboratory, Beijing University of Chinese Medicine Third Affiliated Hospital, Beijing, China
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13
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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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14
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Stępień EŁ, Durak-Kozica M, Kamińska A, Targosz-Korecka M, Libera M, Tylko G, Opalińska A, Kapusta M, Solnica B, Georgescu A, Costa MC, Czyżewska-Buczyńska A, Witkiewicz W, Małecki MT, Enguita FJ. Circulating ectosomes: Determination of angiogenic microRNAs in type 2 diabetes. Am J Cancer Res 2018; 8:3874-3890. [PMID: 30083267 PMCID: PMC6071541 DOI: 10.7150/thno.23334] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 05/03/2018] [Indexed: 12/30/2022] Open
Abstract
Ectosomes (Ects) are a subpopulation of extracellular vesicles formed by the process of plasma membrane shedding. In the present study, we profiled ectosome-specific microRNAs (miRNAs) in patients with type 2 diabetes mellitus (T2DM) and analyzed their pro- and anti-angiogenic potential. Methods: We used different approaches for detecting and enumerating Ects, including atomic force microscopy, cryogenic transmission electron microscopy, and nanoparticle tracking analysis. Furthermore, we used bioinformatics tools to analyze functional data obtained from specific miRNA enrichment signatures during angiogenesis and vasculature development. Results: Levels of miR-193b-3p, miR-199a-3p, miR-20a-3p, miR-26b-5p, miR-30b-5p, miR-30c-5p, miR-374a-5p, miR-409-3p, and miR-95-3p were significantly different between Ects obtained from patients with T2DM and those obtained from healthy controls. Conclusion: Our results showed differences in the abundance of pro- and anti-angiogenic miRNAs in Ects of patients with T2DM, and are suggestive of mechanisms underlying the development of vascular complications due to impaired angiogenesis in such patients.
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15
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MicroRNA-193b-3p represses neuroblastoma cell growth via downregulation of Cyclin D1, MCL-1 and MYCN. Oncotarget 2018; 9:18160-18179. [PMID: 29719597 PMCID: PMC5915064 DOI: 10.18632/oncotarget.24793] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 02/28/2018] [Indexed: 12/29/2022] Open
Abstract
Neuroblastoma is the most common diagnosed tumor in infants and the second most common extracranial tumor of childhood. The survival rate of patients with high-risk neuroblastoma is still very low despite intensive multimodal treatments. Therefore, new treatment strategies are needed. In recent years, miRNA-based anticancer therapy has received growing attention. Advances in this novel treatment strategy strongly depends on the identification of candidate miRNAs with broad-spectrum antitumor activity. Here, we identify miR-193b as a miRNA with tumor suppressive properties. We show that miR-193b is expressed at low levels in neuroblastoma cell lines and primary tumor samples. Introduction of miR-193b mimics into nine neuroblastoma cell lines with distinct genetic characteristics significantly reduces cell growth in vitro independent of risk factors such as p53 functionality or MYCN amplification. Functionally, miR-193b induces a G1 cell cycle arrest and cell death in neuroblastoma cell lines by reducing the expression of MYCN, Cyclin D1 and MCL-1, three important oncogenes in neuroblastoma of which inhibition has shown promising results in preclinical testing. Therefore, we suggest that miR-193b may represent a new candidate for miRNA-based anticancer therapy in neuroblastoma.
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16
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Jiang L, Yang W, Bian W, Yang H, Wu X, Li Y, Feng W, Liu X. MicroRNA-623 Targets Cyclin D1 to Inhibit Cell Proliferation and Enhance the Chemosensitivity of Cells to 5-Fluorouracil in Gastric Cancer. Oncol Res 2018; 27:19-27. [PMID: 29495973 PMCID: PMC7848397 DOI: 10.3727/096504018x15193469240508] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The dysregulation of microRNAs (miRNAs) plays an important function in the onset and progression of gastric cancer (GC). In addition, aberrantly expressed miRNAs affect the chemosensitivity of GC cells to chemotherapeutic drugs. Hence, miRNA-based targeted therapy might be applied to treat patients with GC exhibiting chemotherapeutic resistance. In this study, miRNA-623 (miR-623) expression was downregulated in GC tissues and cell lines. Functional analysis showed that the restored miR-623 expression could inhibit the proliferation of GC cells and enhance their chemosensitivity to 5-FU via the cell apoptosis pathway. Cyclin D1 (CCND1) was identified as a direct target gene of miR-623 in GC. The overexpressed CCND1 in GC tissues was negatively correlated with miR-623 level. The recovered CCND1 expression counteracted the effects of miR-623 on GC cell proliferation, chemosensitivity, and 5-FU-induced apoptosis. Thus, our results suggest that miR-623 might function as a tumor suppressor in GC and could be a promising therapeutic target for patients with GC, especially those with chemotherapeutic resistance.
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Affiliation(s)
- Lihua Jiang
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Wenchuan Yang
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Weishi Bian
- Department of Cardiology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Hailin Yang
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Xia Wu
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Yuhua Li
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Wen Feng
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
| | - Xuejian Liu
- Department of Oncology, Linyi Third People's Hospital, Shandong, P.R. China
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17
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Zhang J, Qin J, Su Y. miR-193b-3p possesses anti-tumor activity in ovarian carcinoma cells by targeting p21-activated kinase 3. Biomed Pharmacother 2017; 96:1275-1282. [DOI: 10.1016/j.biopha.2017.11.086] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 10/26/2017] [Accepted: 11/16/2017] [Indexed: 12/15/2022] Open
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18
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Shu J, Silva BVRE, Gao T, Xu Z, Cui J. Dynamic and Modularized MicroRNA Regulation and Its Implication in Human Cancers. Sci Rep 2017; 7:13356. [PMID: 29042600 PMCID: PMC5645395 DOI: 10.1038/s41598-017-13470-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 09/26/2017] [Indexed: 12/19/2022] Open
Abstract
MicroRNA is responsible for the fine-tuning of fundamental cellular activities and human disease development. The altered availability of microRNAs, target mRNAs, and other types of endogenous RNAs competing for microRNA interactions reflects the dynamic and conditional property of microRNA-mediated gene regulation that remains under-investigated. Here we propose a new integrative method to study this dynamic process by considering both competing and cooperative mechanisms and identifying functional modules where different microRNAs co-regulate the same functional process. Specifically, a new pipeline was built based on a meta-Lasso regression model and the proof-of-concept study was performed using a large-scale genomic dataset from ~4,200 patients with 9 cancer types. In the analysis, 10,726 microRNA-mRNA interactions were identified to be associated with a specific stage and/or type of cancer, which demonstrated the dynamic and conditional miRNA regulation during cancer progression. On the other hands, we detected 4,134 regulatory modules that exhibit high fidelity of microRNA function through selective microRNA-mRNA binding and modulation. For example, miR-18a-3p, -320a, -193b-3p, and -92b-3p co-regulate the glycolysis/gluconeogenesis and focal adhesion in cancers of kidney, liver, lung, and uterus. Furthermore, several new insights into dynamic microRNA regulation in cancers have been discovered in this study.
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Affiliation(s)
- Jiang Shu
- Systems Biology and Biomedical Informatics (SBBI) Laboratory, Department of Computer Science and Engineering, Lincoln, NE, 68588, USA
| | - Bruno Vieira Resende E Silva
- Systems Biology and Biomedical Informatics (SBBI) Laboratory, Department of Computer Science and Engineering, Lincoln, NE, 68588, USA
| | - Tian Gao
- Systems Biology and Biomedical Informatics (SBBI) Laboratory, Department of Computer Science and Engineering, Lincoln, NE, 68588, USA
| | - Zheng Xu
- Department of Statistics, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
- Quantitative Life Sciences Initiative, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Juan Cui
- Systems Biology and Biomedical Informatics (SBBI) Laboratory, Department of Computer Science and Engineering, Lincoln, NE, 68588, USA.
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19
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Yerukala Sathipati S, Ho SY. Identifying the miRNA signature associated with survival time in patients with lung adenocarcinoma using miRNA expression profiles. Sci Rep 2017; 7:7507. [PMID: 28790336 PMCID: PMC5548864 DOI: 10.1038/s41598-017-07739-y] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 07/04/2017] [Indexed: 12/19/2022] Open
Abstract
Lung adenocarcinoma is a multifactorial disease. MicroRNA (miRNA) expression profiles are extensively used for discovering potential theranostic biomarkers of lung cancer. This work proposes an optimized support vector regression (SVR) method called SVR-LUAD to simultaneously identify a set of miRNAs referred to the miRNA signature for estimating the survival time of lung adenocarcinoma patients using their miRNA expression profiles. SVR-LUAD uses an inheritable bi-objective combinatorial genetic algorithm to identify a small set of informative miRNAs cooperating with SVR by maximizing estimation accuracy. SVR-LUAD identified 18 out of 332 miRNAs using 10-fold cross-validation and achieved a correlation coefficient of 0.88 ± 0.01 and mean absolute error of 0.56 ± 0.03 year between real and estimated survival time. SVR-LUAD performs well compared to some well-recognized regression methods. The miRNA signature consists of the 18 miRNAs which strongly correlates with lung adenocarcinoma: hsa-let-7f-1, hsa-miR-16-1, hsa-miR-152, hsa-miR-217, hsa-miR-18a, hsa-miR-193b, hsa-miR-3136, hsa-let-7g, hsa-miR-155, hsa-miR-3199-1, hsa-miR-219-2, hsa-miR-1254, hsa-miR-1291, hsa-miR-192, hsa-miR-3653, hsa-miR-3934, hsa-miR-342, and hsa-miR-141. Gene ontology annotation and pathway analysis of the miRNA signature revealed its biological significance in cancer and cellular pathways. This miRNA signature could aid in the development of novel therapeutic approaches to the treatment of lung adenocarcinoma.
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Affiliation(s)
| | - Shinn-Ying Ho
- Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsinchu, Taiwan. .,Department of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan.
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miR-182-5p improves the viability, mitosis, migration, and invasion ability of human gastric cancer cells by down-regulating RAB27A. Biosci Rep 2017; 37:BSR20170136. [PMID: 28546229 PMCID: PMC6434084 DOI: 10.1042/bsr20170136] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 05/22/2017] [Accepted: 05/25/2017] [Indexed: 12/27/2022] Open
Abstract
We investigated the effect of miR-182-5p on the viability, proliferation, invasion, and migration ability of human gastric cells by regulating the expression of RAB27A. Real-time PCR assay was used to detect the expression of miR-182-5 and RAB27A in human gastric carcinoma tissues, para-carcinoma tissues, and different cell lines. Western blotting was also used to determine the RAB27A expression in both tissues and cell lines. We chose the HGC-27 cell line as experiment subject as it demonstrated the highest miR-182-5p level. HGC-27 cells were transfected with different vectors and the cell viability, mitosis, invasion, and migration ability were measured through MTT assay, flow cytometry (FCM) analysis, Transwell assay, and wound healing assay. In comparison with the normal tissues, miR-182-5p is expressed at a higher level in gastric cancer (GC) tissues, while RAB27A is expressed at a lower level in cancerous tissues. The down-regulation of miR-182-5p and up-regulation of RAB27A can significantly decrease the viability, migration, invasion, and mitosis of HGC-27 cells. The target relationship between miR-182-5p and RAb27A was confirmed through a dual-luciferase reporter gene assay and Western blot assay. miR-182-5p enhances the viability, mitosis, migration, and invasion of human GC cells by down-regulating RAB27A.
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