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Cartier F, Indersie E, Lesjean S, Charpentier J, Hooks KB, Ghousein A, Desplat A, Dugot-Senant N, Trézéguet V, Sagliocco F, Hagedorn M, Grosset CF. New tumor suppressor microRNAs target glypican-3 in human liver cancer. Oncotarget 2018; 8:41211-41226. [PMID: 28476031 PMCID: PMC5522324 DOI: 10.18632/oncotarget.17162] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 03/25/2017] [Indexed: 12/22/2022] Open
Abstract
Glypican-3 (GPC3) is an oncogene, frequently upregulated in liver malignancies such as hepatocellular carcinoma (HCC) and hepatoblastoma and constitutes a potential molecular target for therapy in liver cancer. Using a functional screening system, we identified 10 new microRNAs controlling GPC3 expression in malignant liver cells, five of them e.g. miR-4510, miR-203a-3p, miR-548aa, miR-376b-3p and miR-548v reduce GPC3 expression. These 5 microRNAs were significantly downregulated in tumoral compared to non-tumoral liver and inhibited tumor cell proliferation. Interestingly, miR-4510 inversely correlated with GPC3 mRNA and protein in HCC samples. This microRNA also induced apoptosis of hepatoma cells and blocked tumor growth in vivo in the chick chorioallantoic membrane model. We further show that the tumor suppressive effect of miR-4510 is mediated through direct targeting of GPC3 mRNA and inactivation of Wnt/β-catenin transcriptional activity and signaling pathway. Moreover, miR-4510 up-regulated the expression of several tumor suppressor genes while reducing the expression of other pro-oncogenes. In summary, we uncovered several new microRNAs targeting the oncogenic functions of GPC3. We provided strong molecular, cellular and in vivo evidences for the tumor suppressive activities of miR-4510 bringing to the fore the potential value of this microRNA in HCC therapy.
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Affiliation(s)
- Flora Cartier
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Emilie Indersie
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Sarah Lesjean
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Justine Charpentier
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Katarzyna B Hooks
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Amani Ghousein
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Angélique Desplat
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Nathalie Dugot-Senant
- INSERM US005 - TBM Core, Service for Experimental Histopathology, F-33000 Bordeaux, France
| | - Véronique Trézéguet
- University of Bordeaux, F-33000 Bordeaux, France.,CNRS, UMR5248, Chimie & Biologie des Membranes & des Nano-objets, CBMN, F-33600 Pessac, France
| | - Francis Sagliocco
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Martin Hagedorn
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
| | - Christophe F Grosset
- University of Bordeaux, Inserm, Groupe de Recherche pour l'Etude du Foie, GREF, U1053, F-33076 Bordeaux, France.,University of Bordeaux, Inserm, Biothérapies des Maladies Génétiques Inflammatoires et Cancers, BMGIC, U1035, F-33076 Bordeaux, France
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Belanova AA, Smirnov DS, Makarenko MS, Belousova MM, Mashkina EV, Aleksandrova AA, Soldatov AV, Zolotukhin PV. Individual expression features of GPX2, NQO1 and SQSTM1 transcript variants induced by hydrogen peroxide treatment in HeLa cells. Genet Mol Biol 2017; 40:515-524. [PMID: 28558074 PMCID: PMC5488449 DOI: 10.1590/1678-4685-gmb-2016-0005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 11/22/2016] [Indexed: 12/24/2022] Open
Abstract
Pathway activity assessment-based approaches are becoming highly influential in various fields of biology and medicine. However, these approaches mostly rely on analysis of mRNA expression, and total mRNA from a given locus is measured in the majority of cases. Notably, a significant portion of protein-coding genes produces more than one transcript. This biological fact is responsible for significant noise when changes in total mRNA transcription of a single gene are analyzed. The NFE2L2/AP-1 pathway is an attractive target for biomedical applications. To date, there is a lack of data regarding the agreement in expression of even classical target genes of this pathway. In the present paper we analyzed whether transcript variants of GPX2, NQO1 and SQSTM1 were characterized by individual features of expression when HeLa cells were exposed to pro-oxidative stimulation with hydrogen peroxide. We found that all the transcripts (10 in total) appeared to be significantly individually regulated under the conditions tested. We conclude that individual transcripts, rather than total mRNA, are best markers of pathway activation. We also discuss here some biological roles of individual transcript regulation.
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Affiliation(s)
- Anna A Belanova
- Evolution Corporate Group, Cell Physiology Laboratory, Southern Federal University, Rostov-on-Don, Russia
| | - Dmitry S Smirnov
- Evolution Corporate Group, Cell Physiology Laboratory, Southern Federal University, Rostov-on-Don, Russia
| | - Maxim S Makarenko
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, Russia
| | - Mariya M Belousova
- Department of English Language for Natural Sciences Faculties, Southern Federal University, Rostov-on-Don, Russia
| | - Elena V Mashkina
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, Russia
| | - Anzhela A Aleksandrova
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, Russia
| | - Alexander V Soldatov
- Department of Nanosystems Physics and Spectroscopy, Southern Federal University, Rostov-on-Don, Russia
| | - Peter V Zolotukhin
- Evolution Corporate Group, Cell Physiology Laboratory, Southern Federal University, Rostov-on-Don, Russia
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Bertero T, Robbe-Sermesant K, Le Brigand K, Ponzio G, Pottier N, Rezzonico R, Mazure NM, Barbry P, Mari B. MicroRNA target identification: lessons from hypoxamiRs. Antioxid Redox Signal 2014; 21:1249-68. [PMID: 24111877 DOI: 10.1089/ars.2013.5648] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
SIGNIFICANCE MicroRNAs (miRNAs) are small noncoding RNAs that have emerged as key regulators of many physiological and pathological processes, including those relevant to hypoxia such as cancer, neurological dysfunctions, myocardial infarction, and lung diseases. RECENT ADVANCES During the last 5 years, miRNAs have been shown to play a role in the regulation of the cellular response to hypoxia. The identification of several bona fide targets of these hypoxamiRs has underlined their pleiotropic functions and the complexity of the molecular rules directing miRNA::target transcript pairing. CRITICAL ISSUES This review outlines the main in silico and experimental approaches used to identify the targetome of hypoxamiRs and presents new recent relevant methodologies for future studies. FUTURE DIRECTIONS Since hypoxia plays key roles in many pathophysiological conditions, the precise characterization of regulatory hypoxamiRs networks will be instrumental both at a fundamental level and for their future potential therapeutic applications.
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Affiliation(s)
- Thomas Bertero
- 1 Institut de Pharmacologie Moléculaire et Cellulaire (IPMC) , Centre National de la Recherche Scientifique, CNRS UMR 7275, Sophia Antipolis, France
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Maurel M, Dejeans N, Taouji S, Chevet E, Grosset CF. MicroRNA-1291-mediated silencing of IRE1α enhances Glypican-3 expression. RNA (NEW YORK, N.Y.) 2013; 19:778-788. [PMID: 23598528 PMCID: PMC3683912 DOI: 10.1261/rna.036483.112] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Accepted: 03/06/2013] [Indexed: 06/02/2023]
Abstract
MicroRNAs (miRNA) are generally described as negative regulators of gene expression. However, some evidence suggests that they may also play positive roles. As such, we reported that miR-1291 leads to a GPC3 mRNA expression increase in hepatoma cells through a 3' untranslated region (UTR)-dependent mechanism. In the absence of any direct interaction between miR-1291 and GPC3 mRNA, we hypothesized that miR-1291 could act by silencing a negative regulator of GPC3 mRNA expression. Based on in silico predictions and experimental validation, we demonstrate herein that miR-1291 represses the expression of the mRNA encoding the endoplasmic reticulum (ER)-resident stress sensor IRE1α by interacting with a specific site located in the 5' UTR. Moreover, we show, in vitro and in cultured cells, that IRE1α cleaves GPC3 mRNA at a 3' UTR consensus site independently of ER stress, thereby prompting GPC3 mRNA degradation. Finally, we show that the expression of a miR-1291-resistant form of IRE1α abrogates the positive effects of miR-1291 on GPC3 mRNA expression. Collectively, our data demonstrate that miR-1291 is a biologically relevant regulator of GPC3 expression in hepatoma cells and acts through silencing of the ER stress sensor IRE1α.
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Affiliation(s)
- Marion Maurel
- Groupe de Recherche sur L’Étude du Foie, Université Bordeaux Segalen, F-33000 Bordeaux, France
- Team Post-transcriptional Regulation and Liver Cancer, INSERM, U1053, F-33000 Bordeaux, France
| | - Nicolas Dejeans
- Groupe de Recherche sur L’Étude du Foie, Université Bordeaux Segalen, F-33000 Bordeaux, France
- Team Endoplasmic Reticulum Stress and Cancer, INSERM, U1053, F-33000 Bordeaux, France
| | - Saïd Taouji
- Groupe de Recherche sur L’Étude du Foie, Université Bordeaux Segalen, F-33000 Bordeaux, France
- Team Endoplasmic Reticulum Stress and Cancer, INSERM, U1053, F-33000 Bordeaux, France
| | - Eric Chevet
- Groupe de Recherche sur L’Étude du Foie, Université Bordeaux Segalen, F-33000 Bordeaux, France
- Team Endoplasmic Reticulum Stress and Cancer, INSERM, U1053, F-33000 Bordeaux, France
- CHU de Bordeaux, F-33000 Bordeaux, France
| | - Christophe F. Grosset
- Groupe de Recherche sur L’Étude du Foie, Université Bordeaux Segalen, F-33000 Bordeaux, France
- Team Post-transcriptional Regulation and Liver Cancer, INSERM, U1053, F-33000 Bordeaux, France
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Maurel M, Jalvy S, Ladeiro Y, Combe C, Vachet L, Sagliocco F, Bioulac-Sage P, Pitard V, Jacquemin-Sablon H, Zucman-Rossi J, Laloo B, Grosset CF. A functional screening identifies five microRNAs controlling glypican-3: role of miR-1271 down-regulation in hepatocellular carcinoma. Hepatology 2013; 57:195-204. [PMID: 22865282 DOI: 10.1002/hep.25994] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Accepted: 07/25/2012] [Indexed: 12/12/2022]
Abstract
UNLABELLED Hepatocellular carcinoma (HCC) is the major primary liver cancer. Glypican-3 (GPC3), one of the most abnormally expressed genes in HCC, participates in liver carcinogenesis. Based on data showing that GPC3 expression is posttranscriptionally altered in HCC cells compared to primary hepatocytes, we investigated the implication of microRNAs (miRNAs) in GPC3 overexpression and HCC. To identify GPC3-regulating miRNAs, we developed a dual-fluorescence FunREG (functional, integrated, and quantitative method to measure posttranscriptional regulations) system that allowed us to screen a library of 876 individual miRNAs. Expression of candidate miRNAs and that of GPC3 messenger RNA (mRNA) was measured in 21 nontumoral liver and 112 HCC samples. We then characterized the phenotypic consequences of modulating expression of one candidate miRNA in HuH7 cells and deciphered the molecular mechanism by which this miRNA controls the posttranscriptional regulation of GPC3. We identified five miRNAs targeting GPC3 3'-untranslated region (UTR) and regulating its expression about the 876 tested. Whereas miR-96 and its paralog miR-1271 repressed GPC3 expression, miR-129-1-3p, miR-1291, and miR-1303 had an inducible effect. We report that miR-1271 expression is down-regulated in HCC tumor samples and inversely correlates with GPC3 mRNA expression in a particular subgroup of HCC. We also report that miR-1271 inhibits the growth of HCC cells in a GPC3-dependent manner and induces cell death. CONCLUSION Using a functional screen, we found that miR-96, miR-129-1-3p, miR-1271, miR-1291, and miR-1303 differentially control GPC3 expression in HCC cells. In a subgroup of HCC, the up-regulation of GPC3 was associated with a concomitant down-regulation of its repressor miR-1271. Therefore, we propose that GPC3 overexpression and its associated oncogenic effects are linked to the down-regulation of miR-1271 in HCC.
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Affiliation(s)
- Marion Maurel
- University Bordeaux, Physiopathologie du cancer du foie, U1053, F-33000 Bordeaux, France
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6
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Jalvy-Delvaille S, Maurel M, Majo V, Pierre N, Chabas S, Combe C, Rosenbaum J, Sagliocco F, Grosset CF. Molecular basis of differential target regulation by miR-96 and miR-182: the Glypican-3 as a model. Nucleic Acids Res 2011; 40:1356-65. [PMID: 22009679 PMCID: PMC3273822 DOI: 10.1093/nar/gkr843] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Besides the fact that miR-96 and miR-182 belong to the miR-182/183 cluster, their seed region (UUGGCA, nucleotides 2–7) is identical suggesting potential common properties in mRNA target recognition and cellular functions. Here, we used the mRNA encoding Glypican-3, a heparan-sulfate proteoglycan, as a model target as its short 3′ untranslated region is predicted to contain one miR-96/182 site, and assessed whether it is post-transcriptionally regulated by these two microRNAs. We found that miR-96 downregulated GPC3 expression by targeting its mRNA 3′-untranslated region and interacting with the predicted site. This downregulatory effect was due to an increased mRNA degradation and depended on Argonaute-2. Despite its seed similarity with miR-96, miR-182 was unable to regulate GPC3. This differential regulation was confirmed on two other targets, FOXO1 and FN1. By site-directed mutagenesis, we demonstrated that the miRNA nucleotide 8, immediately downstream the UUGGCA seed, plays a critical role in target recognition by miR-96 and miR-182. Our data suggest that because of a base difference at miRNA position 8, these two microRNAs control a completely different set of genes and therefore are functionally independent.
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Affiliation(s)
- Sandra Jalvy-Delvaille
- Université Bordeaux Segalen, INSERM, U1053 and INSERM, U869, Bordeaux, F-33076 Bordeaux, France
| | - Marion Maurel
- Université Bordeaux Segalen, INSERM, U1053 and INSERM, U869, Bordeaux, F-33076 Bordeaux, France
| | - Vanessa Majo
- Université Bordeaux Segalen, INSERM, U1053 and INSERM, U869, Bordeaux, F-33076 Bordeaux, France
| | - Nathalie Pierre
- Université Bordeaux Segalen, INSERM, U1053 and INSERM, U869, Bordeaux, F-33076 Bordeaux, France
| | - Sandrine Chabas
- Université Bordeaux Segalen, INSERM, U1053 and INSERM, U869, Bordeaux, F-33076 Bordeaux, France
| | - Chantal Combe
- Université Bordeaux Segalen, INSERM, U1053 and INSERM, U869, Bordeaux, F-33076 Bordeaux, France
| | - Jean Rosenbaum
- Université Bordeaux Segalen, INSERM, U1053 and INSERM, U869, Bordeaux, F-33076 Bordeaux, France
| | - Francis Sagliocco
- Université Bordeaux Segalen, INSERM, U1053 and INSERM, U869, Bordeaux, F-33076 Bordeaux, France
| | - Christophe F. Grosset
- Université Bordeaux Segalen, INSERM, U1053 and INSERM, U869, Bordeaux, F-33076 Bordeaux, France
- *To whom correspondence should be addressed. Tel: +33 557 57 46 30; Fax: +33 556 51 40 77;
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Abstract
Once an mRNA is synthesized and processed, the immediate translation and later destruction of the transcript is not as inevitable as the central molecular biology dogma suggests. Interest in the field of post-transcriptional control continues to grow rapidly, as regulation of these multiple steps in gene expression is implicated in diverse aspects of biology such as metabolism, neurology, reproduction and viral lifecycle regulation. Researchers who utilize various combinations of human studies, animal models, cellular, genetic, biochemical and molecular techniques were brought together at the University of Edinburgh to discuss their latest findings. In this article, we introduce the content of the related reviews presented in this issue of Biochemical Society Transactions which together illustrate a major theme of the meeting content: namely the need to understand how dynamic changes in mRNP (messenger ribonucleoprotein) complexes modulate the multifunctionality of regulatory proteins which link different post-transcriptional regulatory events.
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