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Liu X, Lu R, Yang Q, He J, Huang C, Cao Y, Zhou Z, Huang J, Li L, Chen R, Wang Y, Huang J, Xie R, Zhao X, Yu J. USP7 reduces the level of nuclear DICER, impairing DNA damage response and promoting cancer progression. Mol Oncol 2024; 18:170-189. [PMID: 37867415 PMCID: PMC10766207 DOI: 10.1002/1878-0261.13543] [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: 06/01/2023] [Revised: 09/30/2023] [Accepted: 10/12/2023] [Indexed: 10/24/2023] Open
Abstract
Endoribonuclease DICER is an RNase III enzyme that mainly processes microRNAs in the cytoplasm but also participates in nuclear functions such as chromatin remodelling, epigenetic modification and DNA damage repair. The expression of nuclear DICER is low in most human cancers, suggesting a tight regulation mechanism that is not well understood. Here, we found that ubiquitin carboxyl-terminal hydrolase 7 (USP7), a deubiquitinase, bounded to DICER and reduced its nuclear protein level by promoting its ubiquitination and degradation through MDM2, a newly identified E3 ubiquitin-protein ligase for DICER. This USP7-MDM2-DICER axis impaired histone γ-H2AX signalling and the recruitment of DNA damage response (DDR) factors, possibly by influencing the processing of small DDR noncoding RNAs. We also showed that this negative regulation of DICER by USP7 via MDM2 was relevant to human tumours using cellular and clinical data. Our findings revealed a new way to understand the role of DICER in malignant tumour development and may offer new insights into the diagnosis, treatment and prognosis of cancers.
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Affiliation(s)
- Xiaojia Liu
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Runhui Lu
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Qianqian Yang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Jianfeng He
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Caihu Huang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Yingting Cao
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Zihan Zhou
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Jiayi Huang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Lian Li
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Ran Chen
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Yanli Wang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Jian Huang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Ruiyu Xie
- Department of Biomedical Sciences, Faculty of Health SciencesUniversity of MacauChina
| | - Xian Zhao
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Jianxiu Yu
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
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2
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Tamkeen N, Farooqui A, Alam A, Najma, Tazyeen S, Ahmad MM, Ahmad N, Ishrat R. Identification of common candidate genes and pathways for Spina Bifida and Wilm's Tumor using an integrative bioinformatics analysis. J Biomol Struct Dyn 2024; 42:977-992. [PMID: 37051780 DOI: 10.1080/07391102.2023.2199080] [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: 11/23/2022] [Accepted: 03/23/2023] [Indexed: 04/14/2023]
Abstract
Spina Bifida (SB) and Wilm's Tumor (WT) are conditions, both associated with children. Several studies have shown that WT later develops in SB patients, which led us to elucidate common key genes and linked pathways of both conditions, aimed at their concurrent therapeutic management. For this, integrated bioinformatics analysis was employed. A comprehensive manual curation of genes identified 133 and 139 genes associated with SB and WT, respectively, which were used to construct a single protein-protein interaction (PPI) network. Topological parameters analysis of the network showed its scale-free and hierarchical nature. Centrality-based analysis of the network identified 116 hubs, of which, 6 were called the key genes attributed to being common between SB and WT besides being the hubs. Gene enrichment analysis of the 5 most essential modules, identified important biological processes and pathways possibly linking SB to WT. Additionally, miRNA-key gene-transcription factor (TF) regulatory network elucidated a few important miRNAs and TFs that regulate our key genes. In closing, we put forward TP53, DICER1, NCAM1, PAX3, PTCH1, MTHFR; hsa-mir-107, hsa-mir-137, hsa-mir-122, hsa-let-7d; and YY1, SOX4, MYC, STAT3; key genes, miRNAs and TFs, respectively, as the key regulators. Further, MD simulation studies of wild and Glu429Ala forms of MTHFR proteins showed that there is a slight change in MTHFR protein structure due to Glu429Ala polymorphism. We anticipate that the interplay of these three entities will be an interesting area of research to explore the regulatory mechanism of SB and WT and may serve as candidate target molecules to diagnose, monitor, and treat SB and WT, parallelly.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Naaila Tamkeen
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
- Centre for Interdisciplinary Research in Basic Science, Jamia Millia Islamia, New Delhi, India
| | - Anam Farooqui
- Centre for Interdisciplinary Research in Basic Science, Jamia Millia Islamia, New Delhi, India
| | - Aftab Alam
- Centre for Interdisciplinary Research in Basic Science, Jamia Millia Islamia, New Delhi, India
| | - Najma
- Centre for Interdisciplinary Research in Basic Science, Jamia Millia Islamia, New Delhi, India
| | - Safia Tazyeen
- Centre for Interdisciplinary Research in Basic Science, Jamia Millia Islamia, New Delhi, India
| | - Mohd Murshad Ahmad
- Centre for Interdisciplinary Research in Basic Science, Jamia Millia Islamia, New Delhi, India
| | - Nadeem Ahmad
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Romana Ishrat
- Centre for Interdisciplinary Research in Basic Science, Jamia Millia Islamia, New Delhi, India
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Naeli P, Zhang X, Snell PH, Chatterjee S, Kamran M, Ladak RJ, Orr N, Duchaine T, Sonenberg N, Jafarnejad SM. The SARS-CoV-2 protein NSP2 enhances microRNA-mediated translational repression. J Cell Sci 2023; 136:jcs261286. [PMID: 37732428 PMCID: PMC10617620 DOI: 10.1242/jcs.261286] [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: 04/26/2023] [Accepted: 09/08/2023] [Indexed: 09/22/2023] Open
Abstract
Viruses use microRNAs (miRNAs) to impair the host antiviral response and facilitate viral infection by expressing their own miRNAs or co-opting cellular miRNAs. miRNAs inhibit translation initiation of their target mRNAs by recruiting the GIGYF2-4EHP (or EIF4E2) translation repressor complex to the mRNA 5'-cap structure. We recently reported that the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-encoded non-structural protein 2 (NSP2) interacts with GIGYF2. This interaction is critical for blocking translation of the Ifnb1 mRNA that encodes the cytokine interferon β, and thereby impairs the host antiviral response. However, it is not known whether NSP2 also affects miRNA-mediated silencing. Here, we demonstrate the pervasive augmentation of miRNA-mediated translational repression of cellular mRNAs by NSP2. We show that NSP2 interacts with argonaute 2 (AGO2), the core component of the miRNA-induced silencing complex (miRISC), via GIGYF2 and enhances the translational repression mediated by natural miRNA-binding sites in the 3' untranslated region of cellular mRNAs. Our data reveal an additional layer of the complex mechanism by which SARS-CoV-2 and likely other coronaviruses manipulate the host gene expression program by co-opting the host miRNA-mediated silencing machinery.
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Affiliation(s)
- Parisa Naeli
- Patrick G. Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, BT9 7AE, UK
| | - Xu Zhang
- Department of Biochemistry and Goodman Cancer Research Centre, McGill University, Montreal, H3A 1A3, Canada
| | - Patric Harris Snell
- Patrick G. Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, BT9 7AE, UK
| | - Susanta Chatterjee
- Patrick G. Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, BT9 7AE, UK
| | - Muhammad Kamran
- Patrick G. Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, BT9 7AE, UK
| | - Reese Jalal Ladak
- Department of Biochemistry and Goodman Cancer Research Centre, McGill University, Montreal, H3A 1A3, Canada
| | - Nick Orr
- Patrick G. Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, BT9 7AE, UK
| | - Thomas Duchaine
- Department of Biochemistry and Goodman Cancer Research Centre, McGill University, Montreal, H3A 1A3, Canada
| | - Nahum Sonenberg
- Department of Biochemistry and Goodman Cancer Research Centre, McGill University, Montreal, H3A 1A3, Canada
| | - Seyed Mehdi Jafarnejad
- Patrick G. Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, BT9 7AE, UK
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4
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Rajasekaran S, Khan E, Ching SR, Khan M, Siddiqui J, Gradia DF, Lin C, Bouley SJ, Mercadante D, Manning AL, Gerber AP, Walker J, Miles W. PUMILIO competes with AUF1 to control DICER1 RNA levels and miRNA processing. Nucleic Acids Res 2022; 50:7048-7066. [PMID: 35736218 PMCID: PMC9262620 DOI: 10.1093/nar/gkac499] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 05/27/2022] [Indexed: 12/24/2022] Open
Abstract
DICER1 syndrome is a cancer pre-disposition disorder caused by mutations that disrupt the function of DICER1 in miRNA processing. Studying the molecular, cellular and oncogenic effects of these mutations can reveal novel mechanisms that control cell homeostasis and tumor biology. Here, we conduct the first analysis of pathogenic DICER1 syndrome allele from the DICER1 3'UTR. We find that the DICER1 syndrome allele, rs1252940486, abolishes interaction with the PUMILIO RNA binding protein with the DICER1 3'UTR, resulting in the degradation of the DICER1 mRNA by AUF1. This single mutational event leads to diminished DICER1 mRNA and protein levels, and widespread reprogramming of miRNA networks. The in-depth characterization of the rs1252940486 DICER1 allele, reveals important post-transcriptional regulatory events that control DICER1 levels.
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Affiliation(s)
- Swetha Rajasekaran
- Department of Cancer Biology and Genetics, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
| | - Eshan Khan
- Department of Cancer Biology and Genetics, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
| | - Samuel R Ching
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Misbah Khan
- Department of Cancer Biology and Genetics, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
| | - Jalal K Siddiqui
- Department of Cancer Biology and Genetics, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
| | - Daniela F Gradia
- Department of Microbial Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK
- Department of Genetics, Federal University of Parana, Curitiba, Brazil
| | - Chenyu Lin
- Department of Cancer Biology and Genetics, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
| | - Stephanie J Bouley
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Dayna L Mercadante
- Bioinformatics and Computational Biology Program, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
| | - Amity L Manning
- Bioinformatics and Computational Biology Program, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
- Department of Biology and Biotechnology, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
| | - André P Gerber
- Department of Microbial Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK
| | - James A Walker
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, USA
- Cancer Program, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Wayne O Miles
- To whom correspondence should be addressed. Tel: +1 614 366 2869;
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Vergani-Junior CA, Tonon-da-Silva G, Inan MD, Mori MA. DICER: structure, function, and regulation. Biophys Rev 2021; 13:1081-1090. [DOI: 10.1007/s12551-021-00902-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/31/2021] [Indexed: 02/06/2023] Open
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Paturi S, Deshmukh MV. A Glimpse of "Dicer Biology" Through the Structural and Functional Perspective. Front Mol Biosci 2021; 8:643657. [PMID: 34026825 PMCID: PMC8138440 DOI: 10.3389/fmolb.2021.643657] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 04/07/2021] [Indexed: 01/05/2023] Open
Abstract
The RNA interference pathway (RNAi) is executed by two core enzymes, Dicer and Argonaute, for accomplishing a tailored transcriptional and post-transcriptional gene regulation. Dicer, an RNase III enzyme, initiates the RNAi pathway, plays a pivotal role in fighting infection against pathogens, and acts as a housekeeping enzyme for cellular homeostasis. Here, we review structure-based functional insights of Dicer and its domains present in a diverse group of organisms. Although Dicer and its domains are evolutionarily conserved from microsporidian parasites to humans, recent cryo-electron microscopy structures of Homo sapiens Dicer and Drosophila melanogaster Dicer-2 suggest characteristic variations in the mechanism of the dsRNA substrate recognition. Interestingly, the necessity for more than one functionally distinct Dicer paralogs in insects and plants compared with a single Dicer in other eukaryotic life forms implies Dicer’s role in the interplay of RNAi and other defense mechanisms. Based on the structural and mechanistic information obtained during the last decade, we aim to highlight the significance of key Dicer domains that are crucial to Dicer specific recognition and precise cleavage of dsRNA substrates. Further, the role of Dicer in the formation of Argonaute-based RNA-induced silencing complex (RISC) assembly formation, Dicer’s ability to regulate a complex protein interaction network, and its role in other cellular processes, as well as its therapeutic potentials, are emphasized.
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Affiliation(s)
- Sneha Paturi
- Centre for Cellular and Molecular Biology, Council of Scientific and Industrial Research, Hyderabad, India
| | - Mandar V Deshmukh
- Centre for Cellular and Molecular Biology, Council of Scientific and Industrial Research, Hyderabad, India
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7
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Yu WY, Hill ST, Chan ER, Pink JJ, Cooper K, Leachman S, Lund AW, Kulkarni R, Bordeaux JS. Computational Drug Repositioning Identifies Statins as Modifiers of Prognostic Genetic Expression Signatures and Metastatic Behavior in Melanoma. J Invest Dermatol 2021; 141:1802-1809. [PMID: 33417917 DOI: 10.1016/j.jid.2020.12.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 12/02/2020] [Accepted: 12/15/2020] [Indexed: 12/20/2022]
Abstract
Despite advances in melanoma treatment, more than 70% of patients with distant metastasis die within 5 years. Proactive treatment of early melanoma to prevent metastasis could save lives and reduce overall healthcare costs. Currently, there are no treatments specifically designed to prevent early melanoma from progressing to metastasis. We used the Connectivity Map to conduct an in silico drug screen and identified 3-hydroxy-3-methylglutaryl-coenzyme A reductase inhibitors (statins) as a drug class that might prevent melanoma metastasis. To confirm the in vitro effect of statins, RNA sequencing was completed on A375 cells after treatment with fluvastatin to describe changes in the melanoma transcriptome. Statins induced differential expression in genes associated with metastasis and are used in commercially available prognostic tests for melanoma metastasis. Finally, we completed a chart review of 475 patients with melanoma. Patients taking statins were less likely to have metastasis at the time of melanoma diagnosis in both univariate and multivariate analyses (24.7% taking statins vs. 37.6% not taking statins, absolute risk reduction = 12.9%, P = 0.038). These findings suggest that statins might be useful as a treatment to prevent melanoma metastasis. Prospective trials are required to verify our findings and to determine the mechanism of metastasis prevention.
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Affiliation(s)
- Wesley Y Yu
- Department of Dermatology, Oregon Health & Science University, Portland, Oregon, USA.
| | - Sheena T Hill
- Department of Dermatology, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - E Ricky Chan
- Institute for Computational Biology, School of Medicine, Case Western Reserve University, Cleveland, Ohio, USA
| | - John J Pink
- Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, Ohio, USA
| | - Kevin Cooper
- Department of Dermatology, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Sancy Leachman
- Department of Dermatology, Oregon Health & Science University, Portland, Oregon, USA; Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Amanda W Lund
- Ronald O. Perelman Department of Dermatology, NYU Grossman School of Medicine, New York, New York, USA; Department of Pathology, NYU Grossman School of Medicine, New York, New York, USA; Laura and Isaac Perlmutter Cancer Center, NYU Grossman School of Medicine, New York, New York, USA
| | - Rajan Kulkarni
- Department of Dermatology, Oregon Health & Science University, Portland, Oregon, USA; Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Jeremy S Bordeaux
- Department of Dermatology, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
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Brain Dicer1 Is Down-Regulated in a Mouse Model of Alzheimer's Disease Via Aβ42-Induced Repression of Nuclear Factor Erythroid 2-Related Factor 2. Mol Neurobiol 2020; 57:4417-4437. [PMID: 32737764 DOI: 10.1007/s12035-020-02036-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 07/22/2020] [Indexed: 12/17/2022]
Abstract
Dicer1 is a microRNA-processing enzyme which plays critical roles in neuronal survival and neuritogenesis. Dicer1 deletion induces neurodegeneration or degeneration in retinal pigment epithelium, which is associated with oxidative stress. Oxidative stress is thought to be central in the pathogenesis of Alzheimer's disease (AD). Therefore, we hypothesize that Dicer1 may play roles in AD. Using immunoblotting and quantitative real-time PCR, Dicer1 protein and mRNA were reduced in the hippocampi of the AD mouse model APPswe/PSEN1dE9 compared with littermate controls. SiRNA-mediated Dicer1 knockdown induced oxidative stress and apoptosis and reduced mitochondrial membrane potential in cultured neurons. Chronic Aβ42 exposure decreased Dicer1 and nuclear factor erythroid 2-related factor 2 (Nrf2) which were reversed by N-acetyl-cystein. Nrf2 overexpression increased Dicer1 mRNA and protein and reverted the Aβ42-induced Dicer1 reduction. We further cloned Dicer1 promoter variants harboring the Nrf2-binding site, the antioxidant response elements (ARE), into a luciferase reporter and found that simultaneous transfection of Nrf2-expressing plasmid increased luciferase expression from these promoter constructs. ChIP assays indicated that Nrf2 directly interacted with the ARE motifs in the Dicer1 promoter. Furthermore, Dicer1 overexpression in cultured neurons reverted Aβ42-induced neurite deficits. Notably, injection of Dicer1-expressing adenovirus into the hippocampus of the mice significantly improved spatial learning. Altogether, we found novel roles of Dicer1 in AD and a novel regulatory pathway for Dicer1. These results suggest that Dicer1 is a target in AD therapy, especially at the early stage of this disorder. In this study, we found that Dicer1 was reduced in the brain of AD mice which is the first report to examine Dicer1 in AD. We further found (i) that Aβ42 exposure decreased Dicer1 via attenuating Nrf2-ARE signaling and (ii) injection of Dicer1-expressing adenovirus into the hippocampus of the AD mice significantly improved spatial learning. Altogether, we found novel roles of Dicer1 in AD and a novel regulatory pathway for Dicer1. This study may open new avenues for investigating potential pathognomonics and pathogenesis in AD.
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Linck-Paulus L, Hellerbrand C, Bosserhoff AK, Dietrich P. Dissimilar Appearances Are Deceptive-Common microRNAs and Therapeutic Strategies in Liver Cancer and Melanoma. Cells 2020; 9:E114. [PMID: 31906510 PMCID: PMC7017070 DOI: 10.3390/cells9010114] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/20/2019] [Accepted: 12/23/2019] [Indexed: 12/13/2022] Open
Abstract
: In this review, we summarize the current knowledge on miRNAs as therapeutic targets in two cancer types that were frequently described to be driven by miRNAs-melanoma and hepatocellular carcinoma (HCC). By focusing on common microRNAs and associated pathways in these-at first sight-dissimilar cancer types, we aim at revealing similar molecular mechanisms that are evolved in microRNA-biology to drive cancer progression. Thereby, we also want to outlay potential novel therapeutic strategies. After providing a brief introduction to general miRNA biology and basic information about HCC and melanoma, this review depicts prominent examples of potent oncomiRs and tumor-suppressor miRNAs, which have been proven to drive diverse cancer types including melanoma and HCC. To develop and apply miRNA-based therapeutics for cancer treatment in the future, it is essential to understand how miRNA dysregulation evolves during malignant transformation. Therefore, we highlight important aspects such as genetic alterations, miRNA editing and transcriptional regulation based on concrete examples. Furthermore, we expand our illustration by focusing on miRNA-associated proteins as well as other regulators of miRNAs which could also provide therapeutic targets. Finally, design and delivery strategies of miRNA-associated therapeutic agents as well as potential drawbacks are discussed to address the question of how miRNAs might contribute to cancer therapy in the future.
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Affiliation(s)
- Lisa Linck-Paulus
- Institute of Biochemistry, Emil-Fischer-Zentrum, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.L.-P.); (C.H.)
| | - Claus Hellerbrand
- Institute of Biochemistry, Emil-Fischer-Zentrum, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.L.-P.); (C.H.)
- Comprehensive Cancer Center (CCC) Erlangen-EMN, 91054 Erlangen, Germany
| | - Anja K. Bosserhoff
- Institute of Biochemistry, Emil-Fischer-Zentrum, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.L.-P.); (C.H.)
- Comprehensive Cancer Center (CCC) Erlangen-EMN, 91054 Erlangen, Germany
| | - Peter Dietrich
- Institute of Biochemistry, Emil-Fischer-Zentrum, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.L.-P.); (C.H.)
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany
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10
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Luo Y, Tian Z, Hua X, Huang M, Xu J, Li J, Huang H, Cohen M, Huang C. Isorhapontigenin (ISO) inhibits stem cell-like properties and invasion of bladder cancer cell by attenuating CD44 expression. Cell Mol Life Sci 2020; 77:351-363. [PMID: 31222373 PMCID: PMC6923629 DOI: 10.1007/s00018-019-03185-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 05/20/2019] [Accepted: 06/06/2019] [Indexed: 12/21/2022]
Abstract
Cancer stem cells (CSC) are highly associated with poor prognosis in cancer patients. Our previous studies report that isorhapontigenin (ISO) down-regulates SOX2-mediated cyclin D1 induction and stem-like cell properties in glioma stem-like cells. The present study revealed that ISO could inhibit stem cell-like phenotypes and invasivity of human bladder cancer (BC) by specific attenuation of expression of CD44 but not SOX-2, at both the protein transcription and degradation levels. On one hand, ISO inhibited cd44 mRNA expression through decreases in Sp1 direct binding to its promoter region-binding site, resulting in attenuation of its transcription. On the other hand, ISO also down-regulated USP28 expression, which in turn reduced CD44 protein stability. Further studies showed that ISO treatment induced miR-4295, which specific bound to 3'-UTR activity of usp28 mRNA and inhibited its translation and expression, while miR-4295 induction was mediated by increased Dicer protein to enhance miR-4295 maturation upon ISO treatment. Our results provide the first evidence that ISO has a profound inhibitory effect on human BC stem cell-like phenotypes and invasivity through the mechanisms distinct from those previously noted in glioma stem-like cells.
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Affiliation(s)
- Yisi Luo
- Nelson Institute and Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10100, USA
| | - Zhongxian Tian
- Nelson Institute and Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10100, USA
| | - Xiaohui Hua
- Nelson Institute and Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10100, USA
| | - Maowen Huang
- Nelson Institute and Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10100, USA
| | - Jiheng Xu
- Nelson Institute and Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10100, USA
| | - Jingxia Li
- Nelson Institute and Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10100, USA
| | - Haishan Huang
- Nelson Institute and Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10100, USA
| | - Mitchell Cohen
- Nelson Institute and Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10100, USA
| | - Chuanshu Huang
- Nelson Institute and Department of Environmental Medicine, New York University School of Medicine, 341 East 25th Street, New York, NY, 10100, USA.
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11
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Fadaka AO, Pretorius A, Klein A. MicroRNA Assisted Gene Regulation in Colorectal Cancer. Int J Mol Sci 2019; 20:E4899. [PMID: 31623294 PMCID: PMC6801675 DOI: 10.3390/ijms20194899] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 08/25/2019] [Accepted: 08/29/2019] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer (CRC) is the second-leading cause of cancer death and a major public health problem. Nearly 80% CRC cases are diagnosed after the disease have metastasized and are often too advanced for treatment. Small non-coding RNA guides argonaute protein to their specific target for regulation as the sole of RNA induced silencing complex for gene silencing. These non-coding RNA for example microRNA, are thought to play a key role in affecting the efficiency of gene regulation in cancer, especially CRC. Understanding the mechanism at the molecular level could lead to improved diagnosis, treatment, and management decisions for CRC. The study aimed to predict the molecular mechanism of gene regulation based microRNA-mRNA duplex as a lead in the silencing mechanism. Five candidate microRNAs were identified through the in silico approach. The MicroRNA target prediction and subsequent correlation, and prioritization were performed using miRTarBase, gbCRC and CoReCG, and DAVID databases respectively. Protein selection and preparation were carried out using PDB and Schrödinger suits. The molecular docking analysis was performed using PATCHDOCK webserver and visualized by discovery studio visualizer. The results of the study reveal that the candidate microRNAs have strong binding affinity towards their targets suggesting a crucial factor in the silencing mechanism. Furthermore, the molecular docking of the receptor to both the microRNA and microRNA-mRNA duplex were analyzed computationally to understand their interaction at the molecular level. Conclusively, the study provides an explanation for understanding the microRNAs-based gene regulation (silencing mechanism) in CRC.
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Affiliation(s)
- Adewale O Fadaka
- Department of Biotechnology, Faculty of Natural Sciences, University of the Western Cape, Private Bag X17, Bellville, 7535 Cape Town, South Africa.
| | - Ashley Pretorius
- Department of Biotechnology, Faculty of Natural Sciences, University of the Western Cape, Private Bag X17, Bellville, 7535 Cape Town, South Africa.
| | - Ashwil Klein
- Department of Biotechnology, Faculty of Natural Sciences, University of the Western Cape, Private Bag X17, Bellville, 7535 Cape Town, South Africa.
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12
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Zhao G, Yin Y, Zhao B. miR-140-5p is negatively correlated with proliferation, invasion, and tumorigenesis in malignant melanoma by targeting SOX4 via the Wnt/β-catenin and NF-κB cascades. J Cell Physiol 2019; 235:2161-2170. [PMID: 31385607 DOI: 10.1002/jcp.29122] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 06/21/2019] [Indexed: 01/23/2023]
Abstract
MicroRNAs (miRNAs) have been validated as critical regulators in the development of melanoma. miR-140 was abnormally downregulated in uveal melanoma samples. However, the expression level and roles of miR-140-5p remain unclear in melanoma for now. We speculate that miR-140-5p is abnormally expressed and may play an important role in melanoma. The expressions of miR-140-5p and SOX4 messenger RNA were determined by quantitative real-time polymerase chain reaction assays. Western blot assays were employed to detect the expression levels of SOX4, Ki67, MMP-2, MMP-7, p-β-catenin, c-Myc, cyclin D1, p65, and IκBα. Luciferase reporter assays were employed to elucidate the interaction between SOX4 and miR-140-5p. MTT (3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide) and transwell invasion assays were applied to evaluate capabilities of cell proliferation and invasion, respectively. Xenograft models of melanoma were established to verify the role and molecular basis of miR-140-5p. Immunohistochemical (IHC) assays were employed to measure the Ki67 and SOX4 at the protein level in xenografted melanoma tissues. Herein, these observations showed that, miR-140-5p was abnormally downregulated in melanoma tissues and cells, while SOX4 was upregulated. miR-140-5p directly targeted SOX4 and inhibited its expression in melanoma cells. miR-140-5p overexpression repressed melanoma cell proliferation and invasion and its effects were partially restored SOX4 overexpression. Moreover, miR-140-5p hindered melanoma growth in vivo by downregulating SOX4. Mechanistically, miR-140-5p suppressed activation of the Wnt/β-catenin and NF-κB pathways by targeting SOX4. Our study concluded that miR-140-5p hindered cell proliferation, invasion, and tumorigenesis by targeting SOX4 via inactivation of the Wnt/β-catenin and NF-κB signaling pathways in malignant melanoma, which provides an underlying molecular mechanism for the treatment for melanoma with miRNAs.
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Affiliation(s)
- Ge Zhao
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yakun Yin
- Department of Dermatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Bin Zhao
- Department of Dermatology, The Third Provincial People's Hospital of Henan Province, Zhengzhou, Henan, China
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13
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Moran JD, Kim HH, Li Z, Moreno CS. SOX4 regulates invasion of bladder cancer cells via repression of WNT5a. Int J Oncol 2019; 55:359-370. [PMID: 31268162 PMCID: PMC6615919 DOI: 10.3892/ijo.2019.4832] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 05/15/2019] [Indexed: 12/12/2022] Open
Abstract
Sry-Related HMG-BOX-4 (SOX4) is a developmental transcription factor that is overexpressed in as many as 23% of bladder cancer patients; however, the role of SOX4 in bladder cancer tumorigenesis is not yet well understood. Given the many roles of SOX4 in embryonic development and the context-dependent regulation of gene expression, in this study, we sought to determine the role of SOX4 in bladder cancer and to identify SOX4-regulated genes that may contribute to tumorigenesis. For this purpose, we employed a CRISPR interference (CRISPRi) method to transcriptionally repress SOX4 expression in T24 bladder cancer cell lines, 'rescued' these cell lines with the lentiviral-mediated expression of SOX4, and performed whole genome expression profiling. The cells in which SOX4 was knocked down (T24-SOX4-KD) exhibited decreased invasive capabilities, but no changes in migration or proliferation, whereas rescue experiments with SOX4 lentiviral vector restored the invasive phenotype. Gene expression profiling revealed 173 high confidence SOX4-regulated genes, including WNT5a as a potential target of repression by SOX4. Treatment of the T24-SOX4-KD cells with a WNT5a antagonist restored the invasive phenotype observed in the T24-scramble control cells and the SOX4 lentiviral-rescued cells. High WNT5a expression was associated with a decreased invasion and WNT5a expression inversely correlated with SOX4 expression, suggesting that SOX4 can negatively regulate WNT5a levels either directly or indirectly and that WNT5a likely plays a protective role against invasion in bladder cancer cells.
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Affiliation(s)
- Josue D Moran
- Graduate Program in Cancer Biology, Emory University, Atlanta, GA 30322, USA
| | - Hannah H Kim
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Zhenghong Li
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Carlos S Moreno
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA
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14
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MDA-7/IL-24 regulates the miRNA processing enzyme DICER through downregulation of MITF. Proc Natl Acad Sci U S A 2019; 116:5687-5692. [PMID: 30842276 DOI: 10.1073/pnas.1819869116] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Melanoma differentiation-associated gene-7/interleukin-24 (mda-7/IL-24) is a multifunctional cytokine displaying broad-spectrum anticancer activity in vitro or in vivo in preclinical animal cancer models and in a phase 1/2 clinical trial in patients with advanced cancers. mda-7/IL-24 targets specific miRNAs, including miR-221 and miR-320, for down-regulation in a cancer-selective manner. We demonstrate that mda-7/IL-24, administered through a replication incompetent type 5 adenovirus (Ad.mda-7) or with His-MDA-7/IL-24 protein, down-regulates DICER, a critical regulator in miRNA processing. This effect is specific for mature miR-221, as it does not affect Pri-miR-221 expression, and the DICER protein, as no changes occur in other miRNA processing cofactors, including DROSHA, PASHA, or Argonaute. DICER is unchanged by Ad.mda-7/IL-24 in normal immortal prostate cells, whereas Ad.mda-7 down-regulates DICER in multiple cancer cells including glioblastoma multiforme and prostate, breast, lung, and liver carcinoma cells. MDA-7/IL-24 protein down-regulates DICER expression through canonical IL-20/IL-22 receptors. Gain- and loss-of-function studies confirm that overexpression of DICER rescues deregulation of miRNAs by mda-7/IL-24, partially rescuing cancer cells from mda-7/IL-24-mediated cell death. Stable overexpression of DICER in cancer cells impedes Ad.mda-7 or His-MDA-7/IL-24 inhibition of cell growth, colony formation, PARP cleavage, and apoptosis. In addition, stable overexpression of DICER renders cancer cells more resistant to Ad.mda-7 inhibition of primary and secondary tumor growth. MDA-7/IL-24-mediated regulation of DICER is reactive oxygen species-dependent and mediated by melanogenesis-associated transcription factor. Our research uncovers a distinct role of mda-7/IL-24 in the regulation of miRNA biogenesis through alteration of the MITF-DICER pathway.
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15
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Constitutive Dicer1 phosphorylation accelerates metabolism and aging in vivo. Proc Natl Acad Sci U S A 2018; 116:960-969. [PMID: 30593561 DOI: 10.1073/pnas.1814377116] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
DICER1 gene alterations and decreased expression are associated with developmental disorders and diseases in humans. Oscillation of Dicer1 phosphorylation and dephosphorylation regulates its function during the oocyte-to-embryo transition in Caenorhabditis elegans Dicer1 is also phosphorylated upon FGF stimulation at conserved serines in mouse embryonic fibroblasts and HEK293 cells. However, whether phosphorylation of Dicer1 has a role in mammalian development remains unknown. To investigate the consequence of constitutive phosphorylation, we generated phosphomimetic knock-in mouse models by replacing conserved serines 1712 and 1836 with aspartic acids individually or together. Dicer1 S1836D/S1836D mice display highly penetrant postnatal lethality, and the few survivors display accelerated aging and infertility. Homozygous dual-phosphomimetic Dicer1 augments these defects, alters metabolism-associated miRNAs, and causes a hypermetabolic phenotype. Thus, constitutive phosphorylation of Dicer1 results in multiple pathologic processes in mice, indicating that phosphorylation tightly regulates Dicer1 function and activity in mammals.
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16
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GABPA inhibits invasion/metastasis in papillary thyroid carcinoma by regulating DICER1 expression. Oncogene 2018; 38:965-979. [PMID: 30181547 DOI: 10.1038/s41388-018-0483-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 08/07/2018] [Accepted: 08/10/2018] [Indexed: 12/13/2022]
Abstract
The ETS family transcription factor GABPA is suggested as an oncogenic element, which is further supported by the recent reporting of it as the sole ETS member to activate the mutant TERT promoter in thyroid carcinomas (TC). However, it remains unclear how GABPA contributes to TC pathogenesis. The present study is designed to address this issue. TERT expression was significantly diminished in TERT promoter-mutated TC cells upon GABPA inhibition. Surprisingly, GABPA depletion led to robustly increased cellular invasion independently of TERT promoter mutations and TERT expression. DICER1, a component of the microRNA machinery, was identified as a downstream effector of GABPA. GABPA facilitated Dicer1 transcription while its depletion reduced Dicer1 expression. The mutation of the GABPA binding site in the DICER1 promoter led to diminished basal levels of DICER1 promoter activity and abolishment of GABPA-stimulated promoter activity as well. The forced DICER1 expression abrogated the invasiveness of GABPA-depleted TC cells. Consistently, the analyses of 93 patients with papillary thyroid carcinoma (PTC) revealed a positive correlation between GABPA and DICER1 expression. GABPA expression was negatively associated with TERT expression and promoter mutations, in contrast to published observations in cancer cell lines. Lower GABPA expression was associated with distant metastasis and shorter overall/disease-free survival in PTC patients. Similar results were obtained for PTC cases in the TCGA dataset. In addition, a positive correlation between GABPA and DICER1 expression was seen in multiple types of malignancies. Taken together, despite its stimulatory effect on the mutant TERT promoter and telomerase activation, GABPA may itself act as a tumor suppressor rather than an oncogenic factor to inhibit invasion/metastasis in TCs and be a useful predictor for patient outcomes.
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17
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Bourneuf E, Estellé J, Blin A, Créchet F, Schneider MDP, Gilbert H, Brossard M, Vaysse A, Lathrop M, Vincent-Naulleau S, Demenais F. New susceptibility loci for cutaneous melanoma risk and progression revealed using a porcine model. Oncotarget 2018; 9:27682-27697. [PMID: 29963229 PMCID: PMC6021234 DOI: 10.18632/oncotarget.25455] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 05/05/2018] [Indexed: 01/08/2023] Open
Abstract
Despite major advances, it is estimated that a large part of melanoma predisposing genes remains to be discovered. Animal models of spontaneous diseases are valuable tools and experimental crosses can be used to identify and fine-map new susceptibility loci associated with melanoma. We performed a Genome-Wide Association Study (GWAS) of melanoma occurrence and progression (clinical ulceration and presence of metastasis) in a porcine model of spontaneous melanoma, the MeLiM pig. Five loci on chromosomes 2, 5, 7, 8 and 16 showed genome-wide significant associations (p < 5 × 10–6) with either one of these phenotypes. Suggestive associations (p < 5 × 10–5) were also found at 16 additional loci. Moreover, comparison of the porcine results to those reported by human melanoma GWAS indicated shared association signals notably at CDKAL1 and TERT loci but also nearby CCND1, FTO, PLA2G6 and TMEM38B-RAD23B loci. Extensive search of the literature revealed a potential key role of genes at the identified porcine loci in tumor invasion (DST, PLEKHA5, CBY1, LIMK2 and ETV5) and immune response modulation (ETV5, HERC3 and DICER1) of the progression phenotypes. These biological processes are consistent with the clinico-pathological features of MeLiM tumors and can open new routes for future melanoma research in humans.
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Affiliation(s)
- Emmanuelle Bourneuf
- CEA, DRF/iRCM/SREIT/LREG, Jouy-en-Josas, France.,GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Jordi Estellé
- CEA, DRF/iRCM/SREIT/LREG, Jouy-en-Josas, France.,GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Amandine Blin
- GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France.,INSERM, UMR-946, Genetic Variation and Human Diseases Unit, Paris, France.,Outils et Méthodes de la Systématique Intégrative, OMSI-UMS 2700, CNRS MNHN, Muséum National d'Histoire Naturelle, Paris, France
| | - Françoise Créchet
- CEA, DRF/iRCM/SREIT/LREG, Jouy-en-Josas, France.,GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Maria Del Pilar Schneider
- GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France.,Present address: Ipsen Innovation, Les Ulis, France
| | - Hélène Gilbert
- GenPhyse, INRA, Université de Toulouse, INPT, ENVT, Castanet Tolosan, France
| | - Myriam Brossard
- INSERM, UMR-946, Genetic Variation and Human Diseases Unit, Paris, France.,Institut Universitaire d'Hématologie, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Amaury Vaysse
- INSERM, UMR-946, Genetic Variation and Human Diseases Unit, Paris, France.,Institut Universitaire d'Hématologie, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Mark Lathrop
- McGill University and Genome Québec Innovation Centre, Montréal, Québec, Canada
| | - Silvia Vincent-Naulleau
- CEA, DRF/iRCM/SREIT/LREG, Jouy-en-Josas, France.,GABI, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Florence Demenais
- INSERM, UMR-946, Genetic Variation and Human Diseases Unit, Paris, France.,Institut Universitaire d'Hématologie, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
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18
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Sasaki A, Abe H, Mochizuki S, Shimoda M, Okada Y. SOX4, an epithelial-mesenchymal transition inducer, transactivates ADAM28 gene expression and co-localizes with ADAM28 at the invasive front of human breast and lung carcinomas. Pathol Int 2018; 68:449-458. [PMID: 29882245 DOI: 10.1111/pin.12685] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 05/11/2018] [Indexed: 12/21/2022]
Abstract
ADAM28 (a disintegrin and metalloproteinase 28) is abundantly expressed by carcinoma cells in the human breast and non-small cell lung carcinomas, and plays a role in carcinoma cell growth and metastasis. Although Src is an inducer of ADAM28 gene expression through the PI3K/AKT/mTOR and MEK/ERK pathways, direct transcriptional regulators for ADAM28 gene expression remain unknown. In this study, we performed the luciferase reporter assay and found that SOX4 (SRY-related HMG-box 4), an inducer of epithelial-mesenchymal transition (EMT), is a transcriptional activator for the ADAM28 gene. This activation required the SOX4-binding consensus sequence at the 5'-untranslated region of the mouse and human ADAM28 genes. Forced expression of SOX4 promoted the ADAM28 gene expression and migration in human breast and lung carcinoma cell lines. In the human breast and lung carcinoma tissues, ADAM28 and SOX4 were co-expressed at the invasive front of carcinoma cell nests. Our data demonstrate that SOX4 transactivates ADAM28 gene expression through direct binding to the ADAM28 promoter region and suggest the possibility that ADAM28 plays a role in invasion through SOX4-mediated EMT in the human breast and lung carcinomas.
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Affiliation(s)
- Aya Sasaki
- Department of Pathology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Hitoshi Abe
- Department of Pathology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Satsuki Mochizuki
- Department of Pathology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Masayuki Shimoda
- Department of Pathology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Yasunori Okada
- Department of Pathology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
- Department of Pathophysiology for Locomotive and Neoplastic Diseases, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
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19
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Barbier J, Chen X, Sanchez G, Cai M, Helsmoortel M, Higuchi T, Giraud P, Contreras X, Yuan G, Feng Z, Nait-Saidi R, Deas O, Bluy L, Judde JG, Rouquier S, Ritchie W, Sakamoto S, Xie D, Kiernan R. An NF90/NF110-mediated feedback amplification loop regulates dicer expression and controls ovarian carcinoma progression. Cell Res 2018; 28:556-571. [PMID: 29563539 DOI: 10.1038/s41422-018-0016-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 01/26/2018] [Accepted: 01/28/2018] [Indexed: 01/16/2023] Open
Abstract
Reduced expression of DICER, a key enzyme in the miRNA pathway, is frequently associated with aggressive, invasive disease, and poor survival in various malignancies. Regulation of DICER expression is, however, poorly understood. Here, we show that NF90/NF110 facilitates DICER expression by controlling the processing of a miRNA, miR-3173, which is embedded in DICER pre-mRNA. As miR-3173 in turn targets NF90, a feedback amplification loop controlling DICER expression is established. In a nude mouse model, NF90 overexpression reduced proliferation of ovarian cancer cells and significantly reduced tumor size and metastasis, whereas overexpression of miR-3173 dramatically increased metastasis in an NF90- and DICER-dependent manner. Clinically, low NF90 expression and high miR-3173-3p expression were found to be independent prognostic markers of poor survival in a cohort of ovarian carcinoma patients. These findings suggest that, by facilitating DICER expression, NF90 can act as a suppressor of ovarian carcinoma.
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Affiliation(s)
- Jérôme Barbier
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - Xin Chen
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France.,State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Gabriel Sanchez
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - Muyan Cai
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Marion Helsmoortel
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - Takuma Higuchi
- Laboratory of Molecular Biology, Science Research Center, Kochi Medical School, Kochi University, Kochi, 783-8505, Japan
| | - Pierre Giraud
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - Xavier Contreras
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - Gangjun Yuan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Zihao Feng
- The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510060, China
| | - Rima Nait-Saidi
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - Olivier Deas
- XenTech SAS, 4 rue Pierre Fontaine, Evry, 91000, France
| | - Lisa Bluy
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | | | - Sylvie Rouquier
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - William Ritchie
- Institut de Génétique Humaine, CNRS, University of Montpellier, Machine Learning and Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, 34396, France
| | - Shuji Sakamoto
- Laboratory of Molecular Biology, Science Research Center, Kochi Medical School, Kochi University, Kochi, 783-8505, Japan
| | - Dan Xie
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China.
| | - Rosemary Kiernan
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France.
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20
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Shan W, Sun C, Zhou B, Guo E, Lu H, Xia M, Li K, Weng D, Lin X, Meng L, Ma D, Chen G. Role of Dicer as a prognostic predictor for survival in cancer patients: a systematic review with a meta-analysis. Oncotarget 2018; 7:72672-72684. [PMID: 27682871 PMCID: PMC5341936 DOI: 10.18632/oncotarget.12183] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Accepted: 09/12/2016] [Indexed: 01/17/2023] Open
Abstract
Objective The role of Dicer in the prognosis of cancer patients remains controversial. This systematic review is attempted to assess the influence of Dicer as a prognostic predictor for survival in diverse types of cancers. Methods Studies were selected as candidates if they published an independent evaluation of Dicer expression level together with the correlation with prognosis in cancers. Random-effect model was applied in this meta-analysis. Heterogeneity between studies was assessed by Q-statistic with P < 0.10 to be statistically significant. Publication bias was investigated using funnel plot and test with Begg's and Egger's test. P < 0.05 was regarded as statistically significant. Results 24 of 44 articles revealed low Dicer status as a predictor of poor prognosis. The aggregate result of overall survival (OS) indicated that low Dicer expression level resulted in poor clinical outcomes, and subgroup of IHC and RT-PCR method both revealed the same result. Overall analysis of progression-free survival (PFS) showed the same result as OS, and both the two subgroups divided by laboratory method revealed positive results. Subgroup analysis by tumor types showed low dicer levels were associated with poor prognosis in ovarian cancer (HR = 1.93, 95% CI: 1.19-3.15), otorhinolaryngological tumors (HR = 2.39, 95% CI: 1.70-3.36), hematological malignancies (HR = 2.45, 95% CI: 1.69-3.56) and neuroblastoma (HR = 4.03, 95% CI: 1.91-8.50). Conclusion Low Dicer status was associated with poor prognosis in ovarian cancer, otorhinolaryngological tumors and ematological malignancies. More homogeneous studies with high quality are needed to further confirm our conclusion and make Dicer a useful parameter in clinical application.
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Affiliation(s)
- Wanying Shan
- Cancer Biology Medical Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R.China
| | - Chaoyang Sun
- Cancer Biology Medical Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R.China
| | - Bo Zhou
- Cancer Biology Medical Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R.China
| | - Ensong Guo
- Cancer Biology Medical Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R.China
| | - Hao Lu
- Cancer Biology Medical Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R.China
| | - Meng Xia
- Cancer Biology Medical Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R.China
| | - Kezhen Li
- Cancer Biology Medical Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R.China
| | - Danhui Weng
- Cancer Biology Medical Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R.China
| | - Xingguang Lin
- Cancer Biology Medical Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R.China
| | - Li Meng
- Cancer Biology Medical Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R.China
| | - Ding Ma
- Cancer Biology Medical Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R.China
| | - Gang Chen
- Cancer Biology Medical Centre, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R.China
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21
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Gazon H, Belrose G, Terol M, Meniane JC, Mesnard JM, Césaire R, Peloponese JM. Impaired expression of DICER and some microRNAs in HBZ expressing cells from acute adult T-cell leukemia patients. Oncotarget 2017; 7:30258-75. [PMID: 26849145 PMCID: PMC5058679 DOI: 10.18632/oncotarget.7162] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 01/20/2016] [Indexed: 12/21/2022] Open
Abstract
Global dysregulation of microRNAs (miRNAs), a class of non-coding RNAs that regulate genes expression, is a common feature of human tumors. Profiling of cellular miRNAs on Adult T cell Leukemia (ATL) cells by Yamagishi et al. showed a strong decrease in expression for 96.7% of cellular miRNAs in ATL cells. However, the mechanisms that regulate the expression of miRNAs in ATL cells are still largely unknown. In this study, we compared the expression of 12 miRs previously described for being overexpress by Tax and the expression of several key components of the miRNAs biogenesis pathways in different HBZ expressing cell lines as well as in primary CD4 (+) cells from acute ATL patients. We showed that the expression of miRNAs and Dicer1 were downregulated in cells lines expressing HBZ as well as in fresh CD4 (+) cells from acute ATL patients. Using qRT-PCR, western blotting analysis and Chromatin Immunoprecipitation, we showed that dicer transcription was regulated by c-Jun and JunD, two AP-1 transcription factors. We also demonstrated that HBZ affects the expression of Dicer by removing JunD from the proximal promoter. Furthermore, we showed that at therapeutic concentration of 1mM, Valproate (VPA) an HDAC inhibitors often used in cancer treatment, rescue Dicer expression and miRNAs maturation. These results might offer a rationale for clinical studies of new combined therapy in an effort to improve the outcome of patients with acute ATL.
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Affiliation(s)
- Hélène Gazon
- CPBS, CNRS UMR 5236, Université Montpellier 1, Montpellier, France.,Laboratoire de Virologie-Immunologie JE2503, Centre Hospitalier et Universitaire de Martinique, Fort de France, Martinique
| | - Gildas Belrose
- Laboratoire de Virologie-Immunologie JE2503, Centre Hospitalier et Universitaire de Martinique, Fort de France, Martinique
| | - Marie Terol
- CPBS, CNRS UMR 5236, Université Montpellier 1, Montpellier, France.,Laboratoire de Virologie-Immunologie JE2503, Centre Hospitalier et Universitaire de Martinique, Fort de France, Martinique
| | - Jean-Come Meniane
- Service Hématologie Clinique, Centre Hospitalier et Universitaire de Martinique, Fort de France, Martinique
| | | | - Raymond Césaire
- Laboratoire de Virologie-Immunologie JE2503, Centre Hospitalier et Universitaire de Martinique, Fort de France, Martinique
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22
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Zhang L, Cai M, Gong Z, Zhang B, Li Y, Guan L, Hou X, Li Q, Liu G, Xue Z, Yang MH, Ye J, Chin YE, You H. Geminin facilitates FoxO3 deacetylation to promote breast cancer cell metastasis. J Clin Invest 2017; 127:2159-2175. [PMID: 28436938 DOI: 10.1172/jci90077] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 02/21/2017] [Indexed: 01/29/2023] Open
Abstract
Geminin expression is essential for embryonic development and the maintenance of chromosomal integrity. In spite of this protective role, geminin is also frequently overexpressed in human cancers and the molecular mechanisms underlying its role in tumor progression remain unclear. The histone deacetylase HDAC3 modulates transcription factors to activate or suppress transcription. Little is known about how HDAC3 specifies substrates for modulation among highly homologous transcription factor family members. Here, we have demonstrated that geminin selectively couples the transcription factor forkhead box O3 (FoxO3) to HDAC3, thereby specifically facilitating FoxO3 deacetylation. We determined that geminin-associated HDAC3 deacetylates FoxO3 to block its transcriptional activity, leading to downregulation of the downstream FoxO3 target Dicer, an RNase that suppresses metastasis. Breast cancer cells depleted of geminin or HDAC3 exhibited poor metastatic potential that was attributed to reduced suppression of the FoxO3-Dicer axis. Moreover, elevated levels of geminin, HDAC3, or both together with decreased FoxO3 acetylation and reduced Dicer expression were detected in aggressive human breast cancer specimens. These results underscore a prominent role for geminin in promoting breast cancer metastasis via the enzyme-substrate-coupling mechanism in HDAC3-FoxO3 complex formation.
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Affiliation(s)
- Lei Zhang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, and
| | - Meizhen Cai
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, and
| | - Zhicheng Gong
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, and
| | - Bingchang Zhang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, and
| | - Yuanpei Li
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, and
| | - Li Guan
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, and
| | - Xiaonan Hou
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, and
| | - Qing Li
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, and
| | - Gang Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics Center for Molecular Imaging and Translational Medicine School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Zengfu Xue
- Xiamen Cancer Center, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian, China
| | - Muh-Hua Yang
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Jing Ye
- Department of Pathology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shanxi, China
| | - Y Eugene Chin
- Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences-Jiaotong University School of Medicine, Shanghai, China
| | - Han You
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, and
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23
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Andersson KM, Turkkila M, Erlandsson MC, Bossios A, Silfverswärd ST, Hu D, Ekerljung L, Malmhäll C, Weiner HL, Lundbäck B, Bokarewa MI. Survivin controls biogenesis of microRNA in smokers: A link to pathogenesis of rheumatoid arthritis. Biochim Biophys Acta Mol Basis Dis 2017; 1863:663-673. [DOI: 10.1016/j.bbadis.2016.11.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 11/21/2016] [Accepted: 11/30/2016] [Indexed: 12/14/2022]
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24
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Zhou J, Hu Y, Chen Y, Yang L, Song J, Tang Y, Deng F, Zheng L. Dicer-dependent pathway contribute to the osteogenesis mediated by regulation of Runx2. Am J Transl Res 2016; 8:5354-5369. [PMID: 28078008 PMCID: PMC5209488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 10/03/2016] [Indexed: 06/06/2023]
Abstract
Osteogenesis is mediated by sophisticated interactions of various molecular functions and biological processes, including post-transcriptional regulation. A range of miRNAs have been reported to regulate bone homeostasis and osteoblasts differentiation either positively or negatively through multiple signaling pathways. RNase III endonuclease Dicer is the key enzyme required for the biogenesis of miRNAs and small interfering RNAs. To determine the global influence of miRNAs on regulation of osteogenesis of pre-osteoblast cells, the transcriptional regulation of Dicer and the function of Dicer during osteoblast differentiation and mineralization were investigated. Runx2 binding directly to the Dicer promoter region was characterized in MC3T3-E1 cells by chromatin immunoprecipitation (ChIP) and luciferase promoter reporter assays. Overexpression or knockdown of Runx2 resulted in increase or decrease of Dicer expression, respectively. Furthermore, abatement of Dicer in MC3T3-E1 cells down-regulated the expression of osteogenic marker genes and mineralization ability, at least partly involving Dicer-dependent processing of the miR-21a-5p targeting PTEN via pAKT/pGSK3β/β-catenin signaling pathways. Taken together, the study demonstrates the role of Dicer in osteogenesis and suggests that Dicer is required, in part, for Runx2 regulation of osteoblast differentiation.
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Affiliation(s)
- Jie Zhou
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Yun Hu
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Yang Chen
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Lan Yang
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Jinlin Song
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Yuying Tang
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Feng Deng
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
| | - Leilei Zheng
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
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25
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Hoffend NC, Magner WJ, Tomasi TB. The epigenetic regulation of Dicer and microRNA biogenesis by Panobinostat. Epigenetics 2016; 12:105-112. [PMID: 27935420 DOI: 10.1080/15592294.2016.1267886] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
microRNAs (miRs) are small noncoding RNAs that regulate/fine tune many cellular protein networks by targeting mRNAs for either degradation or translational inhibition. Dicer, a type III endoribonuclease, is a critical component in miR biogenesis and is required for mature microRNA production. Abnormal Dicer expression occurs in numerous cancer types and correlates with poor patient prognosis. Recent reports have demonstrated that epigenetic agents, including histone deacetylase inhibitors (HDACi), may regulate Dicer and miR expression. HDACi are a class of epigenetic agents used to treat cancer, viral infections, and inflammatory disorders. However, little is known regarding the epigenetic regulation of miR biogenesis and function. We therefore investigated whether clinically successful HDACi modulated Dicer expression and found that Panobinostat, a clinically approved HDACi, enhanced Dicer expression via posttranscriptional mechanisms. Studies using proteasome inhibitors suggested that Panobinostat regulated the proteasomal degradation of Dicer. Further studies demonstrated that Panobinostat, despite increasing Dicer protein expression, decreased Dicer activity. This suggests that Dicer protein levels do not necessarily correlate with Dicer activity and mature miR levels. Taken together, we present evidence here that Panobinostat posttranscriptionally regulates Dicer/miR biogenesis and suggest Dicer as a potential therapeutic target in cancer.
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Affiliation(s)
- Nicholas C Hoffend
- a Laboratory of Molecular Medicine, Department of Immunology , Roswell Park Cancer Institute , Buffalo , NY , USA
| | - William J Magner
- a Laboratory of Molecular Medicine, Department of Immunology , Roswell Park Cancer Institute , Buffalo , NY , USA.,b Department of Microbiology & Immunology , School of Medicine and Biomedical Sciences, State University of New York , Buffalo , NY , USA
| | - Thomas B Tomasi
- a Laboratory of Molecular Medicine, Department of Immunology , Roswell Park Cancer Institute , Buffalo , NY , USA.,b Department of Microbiology & Immunology , School of Medicine and Biomedical Sciences, State University of New York , Buffalo , NY , USA.,c Department of Medicine , School of Medicine and Biomedical Sciences, State University of New York , Buffalo , NY , USA
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26
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Khosravi S, Martinka M, Zhou Y, Ong CJ. Prognostic significance of the expression of nuclear eukaryotic translation initiation factor 5A2 in human melanoma. Oncol Lett 2016; 12:3089-3100. [PMID: 27899968 PMCID: PMC5103909 DOI: 10.3892/ol.2016.5057] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Accepted: 04/29/2016] [Indexed: 12/18/2022] Open
Abstract
Eukaryotic translation initiation factor 5A2 (EIF5A2) expression is upregulated in various cancers. The present authors previously demonstrated that cytoplasmic EIF5A2 expression increases with melanoma progression and inversely correlates with patient survival. Other studies have suggested that nuclear EIF5A2 may also play a role in oncogenesis. The present study used immunohistochemistry and tissue microarray with a large number of melanocytic lesions (n=459) and demonstrated that nuclear EIF5A2 expression was significantly upregulated between common acquired nevi, dysplastic nevi and primary melanomas, and between primary melanomas and metastatic melanomas. Nuclear EIF5A2 expression was inversely associated with overall and disease-specific 5-year survival rate for all (P<0.001) and primary (P=0.014 and P=0.015, respectively) melanoma patients. Nuclear EIF5A2 expression was directly associated with melanoma thickness (P=0.036) and American Joint Committee on Cancer staging (P<0.001), which suggests the possible role of nuclear EIF5A2 in melanoma cell invasion. Subsequently, the present study investigated the association between the expression of nuclear EIF5A2 and matrix metalloproteinase-2 (MMP-2), which is an important factor for promoting cancer cell invasion. Nuclear EIF5A2 and a strong MMP-2 expression were directly associated, and their concurrent expression was significantly associated with a poorer overall and disease-specific 5-year survival rate for all and primary melanoma patients. Nuclear and cytoplasmic EIF5A2 expression were also demonstrated to be significantly associated, and simultaneous expression of the two forms of EIF5A2 was significantly associated with poor overall and disease-specific 5-year survival rates for all and primary melanoma patients. Multivariate Cox regression analysis revealed that nuclear EIF5A2 expression alone and in combination with cytoplasmic EIF5A2 expression was an adverse independent prognostic factor for all and primary melanoma patients. In conclusion, the present study for the first time, to the best of our knowledge, demonstrated that nuclear EIF5A2 expression is an independent prognostic marker in melanoma, and revealed its role in melanoma progression and patient survival. Therefore, nuclear EIF5A2 may have the potential to serve as a therapeutic marker for melanoma.
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Affiliation(s)
- Shahram Khosravi
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC V5Z 1L8, Canada; Department of Surgery, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC V5Z 1L8, Canada
| | - Magdalena Martinka
- Department of Pathology, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC V5Z 1L8, Canada
| | - Youwen Zhou
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC V5Z 1L8, Canada
| | - Christopher J Ong
- Department of Surgery, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC V5Z 1L8, Canada
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27
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Völler D, Linck L, Bruckmann A, Hauptmann J, Deutzmann R, Meister G, Bosserhoff AK. Argonaute Family Protein Expression in Normal Tissue and Cancer Entities. PLoS One 2016; 11:e0161165. [PMID: 27518285 PMCID: PMC4982624 DOI: 10.1371/journal.pone.0161165] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 08/01/2016] [Indexed: 11/30/2022] Open
Abstract
The members of the Argonaute (AGO) protein family are key players in miRNA-guided gene silencing. They enable the interaction between small RNAs and their respective target mRNA(s) and support the catalytic destruction of the gene transcript or recruit additional proteins for downstream gene silencing. The human AGO family consists of four AGO proteins (AGO1-AGO4), but only AGO2 harbors nuclease activity. In this study, we characterized the expression of the four AGO proteins in cancer cell lines and normal tissues with a new mass spectrometry approach called AGO-APP (AGO Affinity Purification by Peptides). In all analyzed normal tissues, AGO1 and AGO2 were most prominent, but marked tissue-specific differences were identified. Furthermore, considerable changes during development were observed by comparing fetal and adult tissues. We also identified decreased overall AGO expression in melanoma derived cell lines compared to other tumor cell lines and normal tissues, with the largest differences in AGO2 expression. The experiments described in this study suggest that reduced amounts of AGO proteins, as key players in miRNA processing, have impact on several cellular processes. Deregulated miRNA expression has been attributed to chromosomal aberrations, promoter regulation and it is known to have a major impact on tumor development and progression. Our findings will further increase our basic understanding of the molecular basis of miRNA processing and its relevance for disease.
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Affiliation(s)
- Daniel Völler
- Institute of Biochemistry, Emil-Fischer-Zentrum, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Lisa Linck
- Institute of Biochemistry, Emil-Fischer-Zentrum, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Astrid Bruckmann
- Biochemistry Center Regensburg, University of Regensburg, Regensburg, Germany
| | - Judith Hauptmann
- Biochemistry Center Regensburg, University of Regensburg, Regensburg, Germany
| | - Rainer Deutzmann
- Biochemistry Center Regensburg, University of Regensburg, Regensburg, Germany
| | - Gunter Meister
- Biochemistry Center Regensburg, University of Regensburg, Regensburg, Germany
| | - Anja Katrin Bosserhoff
- Institute of Biochemistry, Emil-Fischer-Zentrum, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- * E-mail:
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28
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The modulation of Dicer regulates tumor immunogenicity in melanoma. Oncotarget 2016; 7:47663-47673. [PMID: 27356752 PMCID: PMC5216969 DOI: 10.18632/oncotarget.10273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 06/12/2016] [Indexed: 01/31/2023] Open
Abstract
MicroRNAs (miRs) are small non-coding RNAs that regulate most cellular protein networks by targeting mRNAs for translational inhibition or degradation. Dicer, a type III endoribonuclease, is a critical component in microRNA biogenesis and is required for mature microRNA production. Abnormal Dicer expression occurs in numerous cancer types and correlates with poor patient prognosis. For example, increased Dicer expression in melanoma is associated with more aggressive tumors (higher tumor mitotic index and depth of invasion) and poor patient prognosis. However, the role that Dicer plays in melanoma development and immune evasion remains unclear. Here, we report on a newly discovered relationship between Dicer expression and tumor immunogenicity. To investigate Dicer's role in regulating melanoma immunogenicity, Dicer knockdown studies were performed. We found that B16F0-Dicer deficient cells exhibited decreased tumor growth compared to control cells and were capable of inducing anti-tumor immunity. The decrease in tumor growth was abrogated in immunodeficient NSG mice and was shown to be dependent upon CD8+ T cells. Dicer knockdown also induced a more responsive immune gene profile in melanoma cells. Further studies demonstrated that CD8+ T cells preferentially killed Dicer knockdown tumor cells compared to control cells. Taken together, we present evidence which links Dicer expression to tumor immunogenicity in melanoma.
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29
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Zhang LI, Wang C, Liu S, Zhao Y, Liu C, Guo Z. Prognostic significance of Dicer expression in hepatocellular carcinoma. Oncol Lett 2016; 11:3961-3966. [PMID: 27313724 PMCID: PMC4888077 DOI: 10.3892/ol.2016.4547] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 04/05/2016] [Indexed: 12/17/2022] Open
Abstract
Dicer is a RNaseIII endonuclease of the microRNA processing pathway, which is implicated in carcinogenesis of various types of human cancer. The present study assessed the expression level of Dicer in hepatocellular carcinoma (HCC) tissue to evaluate its association with HCC tumorigenesis. A low expression of Dicer was significantly associated with a shorter postoperative survival time of patients with HCC, which was assessed using the log-rank test with Kaplan-Meier survival analysis. Multivariate analysis identified that Dicer expression was an independent predictor for HCC outcome (relative risk, 0.660; 95% confidence interval, 0.506–0.861; P=0.002). A functional assay demonstrated that Dicer overexpression inhibited the proliferation and promoted the apoptosis of HCC cells. In addition, a Transwell assay revealed that Dicer markedly inhibited the migration and invasion of HCC cells. The present findings indicate that Dicer expression modified the outcomes of HCC patients by inhibiting proliferation, promoting apoptosis and inhibiting metastasis of HCC cells.
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Affiliation(s)
- L I Zhang
- Hebei Key Lab of Animal Science, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Cuiju Wang
- Department of Gynecology Ultrasound, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Shufeng Liu
- Hebei Key Lab of Animal Science, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Yufei Zhao
- Department of Gastroenterology and Hepatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Chao Liu
- Hebei Key Lab of Animal Science, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Zhanjun Guo
- Hebei Key Lab of Animal Science, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China; Department of Gastroenterology and Hepatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
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30
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Raposo LR, Roma-Rodrigues C, Faísca P, Alves M, Henriques J, Carvalheiro MC, Corvo ML, Baptista PV, Pombeiro AJ, Fernandes AR. Immortalization and characterization of a new canine mammary tumour cell line FR37-CMT. Vet Comp Oncol 2016; 15:952-967. [DOI: 10.1111/vco.12235] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 03/09/2016] [Accepted: 03/18/2016] [Indexed: 01/25/2023]
Affiliation(s)
- L. R. Raposo
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Caparica Portugal
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico; Universidade de Lisboa; Lisbon Portugal
| | - C. Roma-Rodrigues
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Caparica Portugal
| | - P. Faísca
- Centro de Investigação em Biociências e Tecnologias da Saúde (CBiOS), Faculdade Medicina Veterinária; Universidade Lusófona de Humanidades e Tecnologias (ULHT) Lisbon; Portugal
| | - M. Alves
- Centro de Investigação em Biociências e Tecnologias da Saúde (CBiOS), Faculdade Medicina Veterinária; Universidade Lusófona de Humanidades e Tecnologias (ULHT) Lisbon; Portugal
| | | | - M. C. Carvalheiro
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia; Universidade de Lisboa; Lisbon Portugal
| | - M. L. Corvo
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia; Universidade de Lisboa; Lisbon Portugal
| | - P. V. Baptista
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Caparica Portugal
| | - A. J. Pombeiro
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico; Universidade de Lisboa; Lisbon Portugal
| | - A. R. Fernandes
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Caparica Portugal
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico; Universidade de Lisboa; Lisbon Portugal
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31
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Roisman A, Huamán Garaicoa F, Metrebian F, Narbaitz M, Kohan D, García Rivello H, Fernandez I, Pavlovsky A, Pavlovsky M, Hernández L, Slavutsky I. SOXC and MiR17-92 gene expression profiling defines two subgroups with different clinical outcome in mantle cell lymphoma. Genes Chromosomes Cancer 2016; 55:531-40. [PMID: 26998831 DOI: 10.1002/gcc.22355] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 03/03/2016] [Accepted: 03/14/2016] [Indexed: 12/12/2022] Open
Abstract
Mantle cell lymphoma (MCL) is a heterogeneous B-cell lymphoid malignancy where most patients follow an aggressive clinical course whereas others are associated with an indolent performance. SOX4, SOX11, and SOX12 belong to SOXC family of transcription factors involved in embryonic neurogenesis and tissue remodeling. Among them, SOX11 has been found aberrantly expressed in most aggressive MCL patients, being considered a reliable biomarker in the pathology. Several studies have revealed that microRNAs (miRs) from the miR-17-92 cluster are among the most deregulated miRNAs in human cancers, still little is known about this cluster in MCL. In this study we screened the transcriptional profiles of 70 MCL patients for SOXC cluster and miR17, miR18a, miR19b and miR92a, from the miR-17-92 cluster. Gene expression analysis showed higher SOX11 and SOX12 levels compared to SOX4 (P ≤ 0.0026). Moreover we found a negative correlation between the expression of SOX11 and SOX4 (P < 0.0001). miR17-92 cluster analysis showed that miR19b and miR92a exhibited higher levels than miR17 and miR18a (P < 0.0001). Unsupervised hierarchical clustering revealed two subgroups with significant differences in relation to aggressive MCL features, such as blastoid morphological variant (P = 0.0412), nodal presentation (P = 0.0492), CD5(+) (P = 0.0004) and shorter overall survival (P < 0.0001). Together, our findings show for the first time an association between the differential expression profiles of SOXC and miR17-92 clusters in MCL and also relate them to different clinical subtypes of the disease adding new biological information that may contribute to a better understanding of this pathology. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Alejandro Roisman
- Laboratorio de Genética de Neoplasias Linfoides, Instituto de Medicina Experimental, CONICET-Academia Nacional de Medicina (ANM), Buenos Aires, Argentina
| | - Fuad Huamán Garaicoa
- Laboratorio de Genética de Neoplasias Linfoides, Instituto de Medicina Experimental, CONICET-Academia Nacional de Medicina (ANM), Buenos Aires, Argentina.,FUNDALEU, Buenos Aires, Argentina
| | - Fernanda Metrebian
- División Patología, Instituto de Investigaciones Hematológicas, ANM, Buenos Aires, Argentina
| | - Marina Narbaitz
- FUNDALEU, Buenos Aires, Argentina.,División Patología, Instituto de Investigaciones Hematológicas, ANM, Buenos Aires, Argentina
| | - Dana Kohan
- Servicio de Patología, Hospital Italiano, Buenos Aires, Argentina
| | | | | | | | | | - Luis Hernández
- Patología Molecular, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, España
| | - Irma Slavutsky
- Laboratorio de Genética de Neoplasias Linfoides, Instituto de Medicina Experimental, CONICET-Academia Nacional de Medicina (ANM), Buenos Aires, Argentina
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Zhang F, Luo Y, Shao Z, Xu L, Liu X, Niu Y, Shi J, Sun X, Liu Y, Ding Y, Zhao L. MicroRNA-187, a downstream effector of TGFβ pathway, suppresses Smad-mediated epithelial–mesenchymal transition in colorectal cancer. Cancer Lett 2016; 373:203-13. [DOI: 10.1016/j.canlet.2016.01.037] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 01/19/2016] [Accepted: 01/19/2016] [Indexed: 12/13/2022]
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MicroRNA Biogenesis and Hedgehog-Patched Signaling Cooperate to Regulate an Important Developmental Transition in Granule Cell Development. Genetics 2016; 202:1105-18. [PMID: 26773048 DOI: 10.1534/genetics.115.184176] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 01/10/2016] [Indexed: 12/20/2022] Open
Abstract
The Dicer1, Dcr-1 homolog (Drosophila) gene encodes a type III ribonuclease required for the canonical maturation and functioning of microRNAs (miRNAs). Subsets of miRNAs are known to regulate normal cerebellar granule cell development, in addition to the growth and progression of medulloblastoma, a neoplasm that often originates from granule cell precursors. Multiple independent studies have also demonstrated that deregulation of Sonic Hedgehog (Shh)-Patched (Ptch) signaling, through miRNAs, is causative of granule cell pathologies. In the present study, we investigated the genetic interplay between miRNA biogenesis and Shh-Ptch signaling in granule cells of the cerebellum by way of the Cre/lox recombination system in genetically engineered models of Mus musculus (mouse). We demonstrate that, although the miRNA biogenesis and Shh-Ptch-signaling pathways, respectively, regulate the opposing growth processes of cerebellar hypoplasia and hyperplasia leading to medulloblastoma, their concurrent deregulation was nonadditive and did not bring the growth phenotypes toward an expected equilibrium. Instead, mice developed either hypoplasia or medulloblastoma, but of a greater severity. Furthermore, some genotypes were bistable, whereby subsets of mice developed hypoplasia or medulloblastoma. This implies that miRNAs and Shh-Ptch signaling regulate an important developmental transition in granule cells of the cerebellum. We also conclusively show that the Dicer1 gene encodes a haploinsufficient tumor suppressor gene for Ptch1-induced medulloblastoma, with the monoallielic loss of Dicer1 more severe than biallelic loss. These findings exemplify how genetic interplay between pathways may produce nonadditive effects with a substantial and unpredictable impact on biology. Furthermore, these findings suggest that the functional dosage of Dicer1 may nonadditively influence a wide range of Shh-Ptch-dependent pathologies.
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Li Y, Zu L, Wang Y, Wang M, Chen P, Zhou Q. miR-132 inhibits lung cancer cell migration and invasion by targeting SOX4. J Thorac Dis 2015; 7:1563-9. [PMID: 26543603 DOI: 10.3978/j.issn.2072-1439.2015.09.06] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
BACKGROUND Multiple MicroRNAs (miRNAs) have been identified in the development and progression of lung cancer. However, the expression and roles of miR-132 in non-small cell lung cancer (NSCLC) remain largely undefined. The aim of this study is to investigate the biological functions and its molecular mechanisms of miR-132 in human lung cancer cells. METHODS miR-132 expression was measured in human lung cancer cell lines by quantitative real-time PCR (qRT-PCR). The cells migration and invasion ability were measured by wound healing assay and transwell assay. The influence of miR-132 on tumor progression in vivo was monitored using NSCLC xenografts in nude mice. The target gene of miR-132 was determined by luciferase assay and western blot. RESULTS The expression level of miR-132 was dramatically decreased in examined lung cancer cell lines. Then, we found that introduction of miR-132 significantly suppressed the migration and invasion of lung cancer cells in vitro. Besides, miR-132 overexpression could also inhibit tumor growth in the nude mice. Further studies indicated that the sex determining region Y-box 4 (SOX4) is a target gene of miR-132. SOX4 re-introduction could reverse the anti-invasion role of miR-132. CONCLUSIONS Our finding provides new insight into the mechanism of NSCLC progression. Therapeutically, miR-132 may serve as a potential target in the treatment of human lung cancer.
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Affiliation(s)
- Yang Li
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Lingling Zu
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Yuli Wang
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Min Wang
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Peirui Chen
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Qinghua Zhou
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, China
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Combined clinical and genomic signatures for the prognosis of early stage non-small cell lung cancer based on gene copy number alterations. BMC Genomics 2015; 16:752. [PMID: 26444668 PMCID: PMC4595201 DOI: 10.1186/s12864-015-1935-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 09/21/2015] [Indexed: 11/16/2022] Open
Abstract
Background The development of a more refined prognostic methodology for early non-small cell lung cancer (NSCLC) is an unmet clinical need. An accurate prognostic tool might help to select patients at early stages for adjuvant therapies. Results A new integrated bioinformatics searching strategy, that combines gene copy number alterations and expression, together with clinical parameters was applied to derive two prognostic genomic signatures. The proposed methodology combines data from patients with and without clinical data with a priori information on the ability of a gene to be a prognostic marker. Two initial candidate sets of 513 and 150 genes for lung adenocarcinoma (ADC) and squamous cell carcinoma (SCC), respectively, were generated by identifying genes which have both: a) significant correlation between copy number and gene expression, and b) significant prognostic value at the gene expression level in external databases. From these candidates, two panels of 7 (ADC) and 5 (SCC) genes were further identified via semi-supervised learning. These panels, together with clinical data (stage, age and sex), were used to construct the ADC and SCC hazard scores combining clinical and genomic data. The signatures were validated in two independent datasets (n = 73 for ADC, n = 97 for SCC), confirming that the prognostic value of both clinical-genomic models is robust, statistically significant (P = 0.008 for ADC and P = 0.019 for SCC) and outperforms both the clinical models (P = 0.060 for ADC and P = 0.121 for SCC) and the genomic models applied separately (P = 0.350 for ADC and P = 0.269 for SCC). Conclusion The present work provides a methodology to generate a robust signature using copy number data that can be potentially used to any cancer. Using it, we found new prognostic scores based on tumor DNA that, jointly with clinical information, are able to predict overall survival (OS) in patients with early-stage ADC and SCC. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1935-0) contains supplementary material, which is available to authorized users.
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Zhang G, Cheng Y, Chen G, Tang Y, Ardekani G, Rotte A, Martinka M, McElwee K, Xu X, Wang Q, Zhou Y. Loss of tumor suppressors KAI1 and p27 identifies a unique subgroup of primary melanoma patients with poor prognosis. Oncotarget 2015; 6:23026-35. [PMID: 26246476 PMCID: PMC4673219 DOI: 10.18632/oncotarget.4854] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 04/10/2015] [Indexed: 02/05/2023] Open
Abstract
Primary melanoma, a highly aggressive malignancy, exhibits heterogeneity in biologic behaviors, clinical characteristics, metastasis potential and mortality. The present study sought to identify the molecular signatures that define a subgroup of primary melanomas with high risks of metastasis and mortality. First, we identified the markers that best differentiated metastatic melanomas from primary melanomas by examining the expression of seven previously reported biomarkers (BRAF, Dicer, Fbw7, KAI1, MMP2, p27 and Tip60) in a training cohort consisting of 145 primary melanomas and 105 metastatic melanomas. KAI1 and p27, both tumor suppressors, emerged as best candidates. Loss of both tumor suppressors occurred in the majority (74.29%) of metastatic melanomas. Further, a subset (metastatic like, or "ML", 33.10%) of primary melanomas also lost these two tumor suppressors. Kaplan-Meier analysis indicated that ML subgroup of primary melanoma patients had much worse 5 year survival compared with other primary melanoma patients (P = 0.002). The result was confirmed in an independent validation cohort with 92 primary melanomas (P = 0.030) and in the combined cohort with 237 melanoma patients (P = 3.00E-4). Additionally, compared to KAI1 and p27 as an individual prognostic marker, the combined signature is more closely associated with melanoma patient survival (P = 0.025, 0.264 and 0.009, respectively). In conclusion, loss of both KAI1 and p27 defines a subgroup of primary melanoma patients with poor prognosis. This molecular signature may help in metastatic melanoma diagnosis and may provide information useful in identifying high-risk primary melanoma patients for more intensive clinical surveillance in the future.
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Affiliation(s)
- Guohong Zhang
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Pathology, Shantou University Medical College, Shantou, Guangdong, China
| | - Yabin Cheng
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Guangdi Chen
- Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yun Tang
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Gholamreza Ardekani
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Anand Rotte
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Magdalena Martinka
- Department of Pathology, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Kevin McElwee
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Xuezhu Xu
- Department of Dermatology, 2nd Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Qi Wang
- Department of Dermatology, 2nd Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Youwen Zhou
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Dermatology, 2nd Affiliated Hospital, Dalian Medical University, Dalian, China
- Dermatologic Oncology Program, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
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Kurzynska-Kokorniak A, Koralewska N, Pokornowska M, Urbanowicz A, Tworak A, Mickiewicz A, Figlerowicz M. The many faces of Dicer: the complexity of the mechanisms regulating Dicer gene expression and enzyme activities. Nucleic Acids Res 2015; 43:4365-80. [PMID: 25883138 PMCID: PMC4482082 DOI: 10.1093/nar/gkv328] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 03/31/2015] [Indexed: 12/14/2022] Open
Abstract
There is increasing evidence indicating that the production of small regulatory RNAs is not the only process in which ribonuclease Dicer can participate. For example, it has been demonstrated that this enzyme is also involved in chromatin structure remodelling, inflammation and apoptotic DNA degradation. Moreover, it has become increasingly clear that cellular transcript and protein levels of Dicer must be strictly controlled because even small changes in their accumulation can initiate various pathological processes, including carcinogenesis. Accordingly, in recent years, a number of studies have been performed to identify the factors regulating Dicer gene expression and protein activity. As a result, a large amount of complex and often contradictory data has been generated. None of these data have been subjected to an exhaustive review or critical discussion. This review attempts to fill this gap by summarizing the current knowledge of factors that regulate Dicer gene transcription, primary transcript processing, mRNA translation and enzyme activity. Because of the high complexity of this topic, this review mainly concentrates on human Dicer. This review also focuses on an additional regulatory layer of Dicer activity involving the interactions of protein and RNA factors with Dicer substrates.
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Affiliation(s)
| | - Natalia Koralewska
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan 61-704, Poland
| | - Maria Pokornowska
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan 61-704, Poland
| | - Anna Urbanowicz
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan 61-704, Poland
| | - Aleksander Tworak
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan 61-704, Poland
| | - Agnieszka Mickiewicz
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan 61-704, Poland
| | - Marek Figlerowicz
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan 61-704, Poland Institute of Computing Science, Poznan University of Technology, Poznan 60-965, Poland
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Jiang Z, Kong C, Zhang Z, Zhu Y, Zhang Y, Chen X. Reduction of protein kinase C α (PKC-α) promote apoptosis via down-regulation of Dicer in bladder cancer. J Cell Mol Med 2015; 19:1085-93. [PMID: 25752336 PMCID: PMC4420610 DOI: 10.1111/jcmm.12503] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 10/28/2014] [Indexed: 02/05/2023] Open
Abstract
In clinic, we examined the expression of protein kinase C (PKC)-α and Dicer in the samples of bladder cancer patients, and found that the two proteins have a line correlation. Our study confirmed this correlation existing by clearing the decreasing expression of Dicer after the PKC-α knockdown. Treatment of bladder cancer cell lines (T24, 5637) with the PKC-α or Dicer knockdown and the PKC inhibitors (Calphostin C and Gö 6976) can promote the apoptosis. Inhibition of PKC can increase the activities of caspase-3 and PARP, however, decrease the expression of Dicer. And knockdown of the PKC-α or Dicer can also activate the caspase-3 or the PARP. Considering the reduction of PKC-α can induce the Dicer down-regulation, we make the conclusion that the reduction of PKC-α can promote the apoptosis via the down-regulation of Dicer in bladder cancer.
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Affiliation(s)
- Zhenming Jiang
- Department of Urology, The First Affiliated Hospital of China Medical University, Shenyang, China
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Cheng Y, Lu J, Chen G, Ardekani GS, Rotte A, Martinka M, Xu X, McElwee KJ, Zhang G, Zhou Y. Stage-specific prognostic biomarkers in melanoma. Oncotarget 2015; 6:4180-9. [PMID: 25784655 PMCID: PMC4414181 DOI: 10.18632/oncotarget.2907] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 12/13/2014] [Indexed: 02/05/2023] Open
Abstract
The melanoma staging system proposed by the American Joint Committee on Cancer (AJCC) (which classifies melanoma patients into four clinical stages) is currently the most widely used tool for melanoma prognostication, and clinical management decision making by clinicians. However, multiple studies have shown that melanomas within specific AJCC Stages can exhibit varying progression and clinical outcomes. Thus, additional information, such as that provided by biomarkers is needed to assist in identifying the patients at risk of disease progression. Having previously found six independent prognostic biomarkers in melanoma, including BRAF, MMP2, p27, Dicer, Fbw7 and Tip60, our group has gone on to investigate if these markers are useful in risk stratification of melanoma patients in individual AJCC stages. First, we performed Kaplan-Meier survival and Cox proportional multivariate analyses comparing prognostication power of these markers in 254 melanoma patients for whom the expression levels were known, identifying the best performing markers as candidates for stage-specific melanoma markers. We then verified the results by incorporating an additional independent cohort (87 patients) and in a combined cohort (341 patients). Our data indicate that BRAF and MMP2 are optimal prognostic biomarkers for AJCC Stages I and II, respectively (P = 0.010, 0.000, Log-rank test); whereas p27 emerged as a good marker for AJCC Stages III/IV (0.018, 0.046, respectively, log-rank test). Thus, our study has identified stage-specific biomarkers in melanoma, a finding which may assist clinicians in designing improved personalized therapeutic modalities.
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Affiliation(s)
- Yabin Cheng
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jing Lu
- Department of Pathophysiology, Basic Medical College, Zhengzhou University, Zhengzhou, Henan, China
| | - Guangdi Chen
- Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Gholamreza Safaee Ardekani
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Anand Rotte
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Magdalena Martinka
- Department of Pathology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Xuezhu Xu
- Department of Dermatology, Second Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Kevin J. McElwee
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Guohong Zhang
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
- Department of Pathology, Shantou University Medical College, Shantou, Guangdong, China
| | - Youwen Zhou
- Department of Dermatology and Skin Science, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
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40
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Song GD, Sun Y, Shen H, Li W. SOX4 overexpression is a novel biomarker of malignant status and poor prognosis in breast cancer patients. Tumour Biol 2015; 36:4167-73. [PMID: 25592378 DOI: 10.1007/s13277-015-3051-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 01/02/2015] [Indexed: 12/22/2022] Open
Abstract
Sex-determining region Y-related high mobility group box 4 (SOX4) has been proven to serve as a critical role in cancer development and progression. However, little is known about the pathological role of SOX4 in breast cancer patients. The purpose of this study is to measure the expression of SOX4 in breast cancer patients and to explore the clinical significance of SOX4. Using RT-PCR and Western blot, messenger RNA (mRNA) and protein expression of SOX4 were measured in breast cancer tissues and adjacent normal mammary tissues. The relationship of SOX4 expression with clinical characteristics of 148 breast cancer patients was analyzed by immunohistochemistry. In the present study, our results indicated that SOX4 mRNA and protein were highly expressed in breast cancer tissues compared with adjacent normal mammary tissues and positively correlated with clinical stage (I-II vs. III-IV; P = 0.008), T classification (T1-T2 vs. T3-T4; P = 0.013), N classification (N0-N1 vs. N2-N3; P < 0.001), M classification (M0 vs. M1; P = 0.001), estrogen receptor (negative vs. positive; P = 0.029), progesterone receptor (negative vs. positive; P = 0.004), and histological grade (G1 vs. G2-G3; P = 0.033) in breast cancer patients. Furthermore, we also found that SOX4 protein overexpression was an unfavorable prognostic factor in breast cancer patients (P < 0.001), regardless of clinical stage, tumor size, lymph node metastasis, and distant metastasis. Finally, high SOX4 expression was an independent poor prognostic factor for pancreatic patients through multivariate analysis (P = 0.033). In conclusion, SOX4 overexpression serves as an unfavorable prognostic biomarker in breast cancer patients.
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Affiliation(s)
- Guo-Dong Song
- Department of Surgery, The Second Hospital of Tianjin Medical University, No.23 Pingjiang Avenue, Xihe District, Tianjin, 300211, China,
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41
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Mione M, Bosserhoff A. MicroRNAs in melanocyte and melanoma biology. Pigment Cell Melanoma Res 2015; 28:340-54. [PMID: 25515738 DOI: 10.1111/pcmr.12346] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 12/15/2014] [Indexed: 12/18/2022]
Abstract
The importance of microRNAs as key molecular components of cellular processes is now being recognized. Recent reports have shown that microRNAs regulate processes as diverse as protein expression and nuclear functions inside cells and are able to signal extracellularly, delivered via exosomes, to influence cell fate at a distance. The versatility of microRNAs as molecular tools inspires the design of novel strategies to control gene expression, protein stability, DNA repair and chromatin accessibility that may prove very useful for therapeutic approaches due to the extensive manageability of these small molecules. However, we still lack a comprehensive understanding of the microRNA network and its interactions with the other layers of regulatory elements in cellular and extracellular functions. This knowledge may be necessary before we exploit microRNA versatility in therapeutic settings. To identify rules of interactions between microRNAs and other regulatory systems, we begin by reviewing microRNA activities in a single cell type: the melanocyte, from development to disease.
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Affiliation(s)
- Marina Mione
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Eggestein-Leopoldshafen, Germany
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42
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Syed DN, Lall RK, Mukhtar H. MicroRNAs and Photocarcinogenesis. Photochem Photobiol 2014; 91:173-87. [DOI: 10.1111/php.12346] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 09/08/2014] [Indexed: 12/16/2022]
Affiliation(s)
- Deeba N. Syed
- Department of Dermatology; University of Wisconsin; Madison WI
| | - Rahul K. Lall
- Department of Dermatology; University of Wisconsin; Madison WI
| | - Hasan Mukhtar
- Department of Dermatology; University of Wisconsin; Madison WI
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Gao Y, Meng H, Liu S, Hu J, Zhang Y, Jiao T, Liu Y, Ou J, Wang D, Yao L, Liu S, Hui N. LncRNA-HOST2 regulates cell biological behaviors in epithelial ovarian cancer through a mechanism involving microRNA let-7b. Hum Mol Genet 2014; 24:841-52. [PMID: 25292198 DOI: 10.1093/hmg/ddu502] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Recently, a large number of long non-coding RNAs (lncRNAs) have been reported in mammalian genomes and are evolutionarily conserved and presumably function in many biological events, especially in the pathogenesis of diverse human cancers. A lncRNA, named HOST2 (human ovarian cancer-specific transcript 2), was once reported to specifically be expressed at high level in human ovarian cancer. However, how HOST2 acts to regulate gene functions in ovarian carcinogenesis has remained enigmatic. Here we report, for the first time, that HOST2 promotes tumor cell migration, invasion and proliferation in epithelial ovarian cancer by working in key aspects of biological behaviors. In the present study, bioinformatics analysis indicated that HOST2 binds with microRNA let-7b, a potent tumor suppressor, which was then verified to target HOST2. Our results showed that HOST2 harbors a let-7b binding site and modulates let-7b availability by acting as a molecular sponge. HOST2 inhibits let-7b functions, which post-transcriptionally suppress the expression of targets, including some oncogenes that regulate cell growth and motility. Additionally, understanding HOST2/let-7b-dependent regulation may lead to alternative approaches for the diagnosis and cure of this deadly disease.
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Affiliation(s)
- Yuan Gao
- Chinese PLA General Hospital, Beijing 100853, China Changhai Hospital of Second Military Medical University, Shanghai 200433, China
| | - Hao Meng
- Air Force General Hospital, Beijing 100142, China and Beijing Military Region General Hospital, Beijing 100700, China
| | - Shupeng Liu
- Changhai Hospital of Second Military Medical University, Shanghai 200433, China
| | - Jingjing Hu
- Changhai Hospital of Second Military Medical University, Shanghai 200433, China
| | - Yemin Zhang
- Changhai Hospital of Second Military Medical University, Shanghai 200433, China
| | - Tingting Jiao
- Changhai Hospital of Second Military Medical University, Shanghai 200433, China
| | - Yujie Liu
- Changhai Hospital of Second Military Medical University, Shanghai 200433, China
| | - Jun Ou
- Changhai Hospital of Second Military Medical University, Shanghai 200433, China
| | - Dan Wang
- Changhai Hospital of Second Military Medical University, Shanghai 200433, China
| | - Lin Yao
- Changhai Hospital of Second Military Medical University, Shanghai 200433, China
| | - Shanrong Liu
- Changhai Hospital of Second Military Medical University, Shanghai 200433, China
| | - Ning Hui
- Changhai Hospital of Second Military Medical University, Shanghai 200433, China
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Abstract
Numerous studies describe alterations in the levels of specific microRNAs (miRNAs) that are associated with human pathologies. Some of these alterations may give rise to the development of novel diagnostic tools, while certain miRNAs additionally could serve as novel drug targets. Moreover, components of the miRNA maturation machinery may be up- or down-regulated in human disease. In such cases, the consequences for the expression of individual miRNAs are however only poorly understood. Herein, we review the current knowledge of how miRNAs are linked to human disease and which parts of the miRNA maturation machinery could serve as future drug targets.
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Affiliation(s)
- Marlen Hesse
- Institute for Chemistry, Humboldt Universität zu Berlin, Berlin, Germany
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45
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Abstract
MicroRNAs (miRNAs) are a class of small, non-coding, and endogenous RNA molecules, which are evolutionarily conserved but play a significant role in regulation of protein-coding gene expression at posttranscriptional and translational levels. Strikingly, a single miRNA is able to trigger hundreds of putative target genes by incomplete or complete complementary binding to their 3' untranslated regions. Given their appearance in almost all types of tissues, miRNAs have been demonstrated to be intensively involved in normal and pathological processes of human cells. Aside from the role as invaluable biomarkers in indication of tumorigenesis and tumor progression, numerous studies have revealed the potential of miRNAs as novel targets of anticancer drugs in cancer therapy. In this review article, we focus on the summary of the latest publications on the topic of miRNA and anticancer drugs, and expect to shed light on understanding the molecular mechanisms of chemoresistance involving miRNA regulation. These pieces of evidence will eventually provide insight into the development of novel and more efficacious anticancer drugs in the future.
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Affiliation(s)
- Zhiwei Xing
- Clinical Medical Research Center of the Affiliated Hospital, Inner Mongolia Medical University, Hohhot 010050, China
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46
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Luo C, Weber CEM, Osen W, Bosserhoff AK, Eichmüller SB. The role of microRNAs in melanoma. Eur J Cell Biol 2014; 93:11-22. [PMID: 24602414 DOI: 10.1016/j.ejcb.2014.02.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 01/22/2014] [Accepted: 02/03/2014] [Indexed: 12/21/2022] Open
Abstract
Melanoma is the most dangerous form of skin cancer, being largely resistant to conventional therapies at advanced stages. Understanding the molecular mechanisms behind this disease might be the key for the development of novel therapeutic strategies. MicroRNAs (miRNAs) are small non-coding RNAs that post-transcriptionally control gene expression, thereby regulating various cellular signaling pathways involved in the initiation and progression of different cancer types, including melanoma. In this review, we summarize approaches for the identification of candidate miRNAs and their target genes and review the functions of miRNAs in melanoma. Finally, we highlight the recent progress in pre-clinical use of miRNAs as prognostic markers and therapeutic targets.
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Affiliation(s)
- Chonglin Luo
- Translational Immunology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany.
| | - Claudia E M Weber
- Translational Immunology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Wolfram Osen
- Translational Immunology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | | | - Stefan B Eichmüller
- Translational Immunology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany.
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Khosravi S, Wong RPC, Ardekani GS, Zhang G, Martinka M, Ong CJ, Li G. Role of EIF5A2, a downstream target of Akt, in promoting melanoma cell invasion. Br J Cancer 2014; 110:399-408. [PMID: 24178756 PMCID: PMC3899752 DOI: 10.1038/bjc.2013.688] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 08/26/2013] [Accepted: 10/09/2013] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Cutaneous melanoma is a life-threatening skin cancer because of its poorly understood invasive nature and high metastatic potential. This study examines the importance of eukaryotic translation initiation factor 5A2 (EIF5A2) in melanoma pathogenesis. METHODS We examined EIF5A2 expression in 459 melanocytic lesions using tissue microarray. In addition, melanoma cell lines were subjected to invasion and cell proliferation assays, zymography, FACS and real-time PCR to investigate the role of EIF5A2 in cancer progression. RESULTS Positive EIF5A2 staining increased from dysplastic naevi to primary melanomas (PMs; P=0.001), and further increased in metastatic melanomas (P=0.044). Eukaryotic translation initiation factor 5A2 expression was correlated with melanoma thickness (P<0.001) and was inversely correlated with the 5-year survival of PM patients especially those with tumour ≤2 mm thick. Strikingly, none of the latter died within 5 years in EIF5A2-negative staining group. Cox regression analysis revealed that EIF5A2 is an independent prognostic marker. Further, we found that EIF5A2 is a novel downstream target of phosphorylated Akt. Both melanoma cell invasion and MMP-2 activity increased and decreased with EIF5A2 overexpression and knockdown, respectively. CONCLUSION We for the first time showed that EIF5A2, as a target of PI3K/Akt, promotes melanoma cell invasion and may serve as a promising prognostic marker and a potential therapeutic target for melanoma.
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Affiliation(s)
- S Khosravi
- Department of Dermatology and Skin Science, Research Pavilion, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - R P C Wong
- Department of Dermatology and Skin Science, Research Pavilion, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - G S Ardekani
- Department of Dermatology and Skin Science, Research Pavilion, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - G Zhang
- Department of Dermatology and Skin Science, Research Pavilion, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - M Martinka
- Department of Pathology, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - C J Ong
- Department of Surgery, Vancouver Prostate Centre, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - G Li
- Department of Dermatology and Skin Science, Research Pavilion, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
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48
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Growth inhibitory effects of three miR-129 family members on gastric cancer. Gene 2013; 532:87-93. [PMID: 24055727 DOI: 10.1016/j.gene.2013.09.048] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 07/24/2013] [Accepted: 09/04/2013] [Indexed: 01/11/2023]
Abstract
Reduced expression of microRNA-129 (miR-129) has been reported in several types of tumor cell lines as well as in primary tumor tissues. However, little is known about how miR-129 affects cell proliferation in gastric cancer. Here, we show that all miR-129 family members, miR-129-1-3p, miR-129-2-3p, and miR-129-5p, are down-regulated in gastric cancer cell lines compared with normal gastric epithelial cells. Furthermore, using the real-time cell analyzer assay to observe the growth effects of miR-129 on gastric cancer cells, we found that all three mature products of miR-129 showed tumor suppressor activities. To elucidate the molecular mechanisms underlying down-regulation of miR-129 in gastric cancer, we analyzed the effects of miR-129 mimics on the cell cycle. We found that increased miR-129 levels in gastric cancer cells resulted in significant G0/G1 phase arrest. Interestingly, we showed that cyclin dependent kinase 6 (CDK6), a cell cycle-associated protein involved in G1-S transition, was a target of miR-129. We also found that expression of the sex determining region Y-box 4 (SOX4) was inversely associated with that of miR-129-2-3p and miR-129-5p but not of miR-129-1-3p. Together, our data indicate that all miR-129 family members, not only miR-129-5p, as previously thought, play an important role in regulating cell proliferation in gastric cancer.
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Jafarnejad SM, Ardekani GS, Ghaffari M, Li G. Pleiotropic function of SRY-related HMG box transcription factor 4 in regulation of tumorigenesis. Cell Mol Life Sci 2013; 70:2677-96. [PMID: 23080209 PMCID: PMC11113534 DOI: 10.1007/s00018-012-1187-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Revised: 09/10/2012] [Accepted: 10/02/2012] [Indexed: 02/06/2023]
Abstract
In addition to their critical roles in embryonic development, cell fate decision, and differentiation, members of Sox (Sry-related high-mobility group box) family of transcription factors including Sox4 have been implicated in various cancers. Multiple studies have revealed an increased expression along with specific oncogenic function of Sox4 in tumors, while others observed a reduced expression of Sox4 in different types of malignancies and suppression of tumor initiation or progression by this protein. More interestingly, the prognostic value of Sox4 is debated due to obvious differences between various reports as well as inconsistencies within specific studies. This review summarizes our current understanding of Sox4 expression pattern and its transcription-dependent, as well as transcription-independent, functions in tumor initiation or progression and its correlation with patient survival. We also discuss the existing discrepancies between different reports and their possible explanations.
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Affiliation(s)
- Seyed Mehdi Jafarnejad
- Department of Dermatology and Skin Science, Jack Bell Research Centre, University of British Columbia, 2660 Oak Street, Vancouver, BC V6H 3Z6 Canada
| | - Gholamreza Safaee Ardekani
- Department of Dermatology and Skin Science, Jack Bell Research Centre, University of British Columbia, 2660 Oak Street, Vancouver, BC V6H 3Z6 Canada
| | - Mazyar Ghaffari
- The Vancouver Prostate Centre, Vancouver General Hospital, University of British Columbia, Vancouver, BC Canada
| | - Gang Li
- Department of Dermatology and Skin Science, Jack Bell Research Centre, University of British Columbia, 2660 Oak Street, Vancouver, BC V6H 3Z6 Canada
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50
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Zhang B, Chen H, Zhang L, Dakhova O, Zhang Y, Lewis MT, Creighton CJ, Ittmann MM, Xin L. A dosage-dependent pleiotropic role of Dicer in prostate cancer growth and metastasis. Oncogene 2013; 33:3099-108. [PMID: 23851498 PMCID: PMC3916938 DOI: 10.1038/onc.2013.281] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Revised: 04/25/2013] [Accepted: 05/24/2013] [Indexed: 12/12/2022]
Abstract
Dicer is as an RNase III enzyme essential for the maturation of the majority of microRNAs. Recent studies have revealed down-regulation or hemizygous loss of Dicer in many tumor models and demonstrated that suppressing Dicer activity enhances tumorigenic activities of lung and breast cancer cells, which support Dicer as a haploinsufficient tumor suppressor in these cancer models. Surprisingly, we found that knocking down Dicer expression suppresses the growth and tumorigenic capacity of human prostate cancer cell lines, but enhances migratory capacities of some prostate cancer cell lines. Dicer is up-regulated in human prostate cancer specimens, but lower Dicer expression portends a shorter time to recurrence. Complete ablation of Dicer activity in a Pten null mouse model for prostate cancer significantly halts tumor growth and progression, demonstrating that microRNAs play a critical role in maintaining cancer cell fitness. In comparison, hemizygous loss of Dicer in the same model also reduces primary tumor burden, but induces a more locally invasive phenotype and causes seminal vesicle obstruction at high penetrance. Disrupting Dicer activity leads to an increase in apoptosis and senescence in these models, presumably through up-regulation of P16/INK4a and P27/Kip1. Collectively, these results highlight a pleotropic role of Dicer in tumorigenesis that is not only dosage-dependent but also tissue context-dependent.
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Affiliation(s)
- B Zhang
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - H Chen
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - L Zhang
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - O Dakhova
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX, USA
| | - Y Zhang
- Dan L. Duncan Cancer Center, Houston, TX, USA
| | - M T Lewis
- 1] Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA [2] Dan L. Duncan Cancer Center, Houston, TX, USA
| | | | - M M Ittmann
- 1] Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX, USA [2] Dan L. Duncan Cancer Center, Houston, TX, USA
| | - L Xin
- 1] Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA [2] Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX, USA [3] Dan L. Duncan Cancer Center, Houston, TX, USA
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