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Hotton J, Gauchotte G, Mougel R, Migliorini M, Lacomme S, Battaglia-Hsu SF, Agopiantz M. Expressions of HuR, Methyl-HuR and Phospho-HuR in Endometrial Endometrioid Adenocarcinoma Are Associated with Clinical Features. Int J Mol Sci 2024; 25:954. [PMID: 38256026 PMCID: PMC10815350 DOI: 10.3390/ijms25020954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/03/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
HuR regulates cytoplasmic mRNA stability and translatability, with its expression correlating with adverse outcomes in various cancers. This study aimed to assess the prognostic value and pro-oncogenic properties of HuR and its post-translational isoforms methyl-HuR and phospho-HuR in endometrial adenocarcinoma. Examining 89 endometrioid adenocarcinomas, we analyzed the relationship between HuR nuclear or cytoplasmic immunostaining, tumor-cell proliferation, and patient survival. HuR cytoplasmic expression was significantly increased in grade 3 vs. grade 1 adenocarcinomas (p < 0.001), correlating with worse overall survival (OS) (p = 0.02). Methyl-HuR cytoplasmic expression significantly decreased in grade 3 vs. grade 1 adenocarcinomas (p < 0.001) and correlated with better OS (p = 0.002). Phospho-HuR nuclear expression significantly decreased in grade 3 vs. grade 1 adenocarcinomas (p < 0.001) and non-significantly correlated with increased OS (p = 0.06). Cytoplasmic HuR expression strongly correlated with proliferation markers MCM6 (rho = 0.59 and p < 0.001) and Ki67 (rho = 0.49 and p < 0.001). Conversely, these latter inversely correlated with cytoplasmic methyl-HuR and nuclear phospho-HuR. Cytoplasmic HuR expression is a poor prognosis marker in endometrioid endometrial adenocarcinoma, while cytoplasmic methyl-HuR and nuclear phosphoHuR expressions are markers of better prognosis. This study highlights HuR as a promising potential therapeutic target, especially in treatment-resistant tumors, though further research is needed to understand the mechanisms regulating HuR subcellular localization and post-translational modifications.
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Affiliation(s)
- Judicaël Hotton
- Department of Gynecology and Obstetrics, CHRU de Nancy, Université de Lorraine, 54000 Nancy, France;
- INSERM U1256 NGERE, Université de Lorraine, 54500 Vandœuvre-lès-Nancy, France; (G.G.); (R.M.); (M.M.); (S.-F.B.-H.)
| | - Guillaume Gauchotte
- INSERM U1256 NGERE, Université de Lorraine, 54500 Vandœuvre-lès-Nancy, France; (G.G.); (R.M.); (M.M.); (S.-F.B.-H.)
- Department of Biopathology CHRU of Nancy, Institut de Cancérologie de Lorraine, BBB, CHRU de Nancy, Université de Lorraine, 54511 Vandœuvre-lès-Nancy, France
- Centre de Ressources Biologiques, BB-0033-00035, CHRU de Nancy, 54000 Nancy, France;
| | - Romane Mougel
- INSERM U1256 NGERE, Université de Lorraine, 54500 Vandœuvre-lès-Nancy, France; (G.G.); (R.M.); (M.M.); (S.-F.B.-H.)
- Department of Reproductive Medicine, CHRU de Nancy, Université de Lorraine, 54000 Nancy, France
| | - Mégane Migliorini
- INSERM U1256 NGERE, Université de Lorraine, 54500 Vandœuvre-lès-Nancy, France; (G.G.); (R.M.); (M.M.); (S.-F.B.-H.)
| | - Stéphanie Lacomme
- Centre de Ressources Biologiques, BB-0033-00035, CHRU de Nancy, 54000 Nancy, France;
| | - Shyue-Fang Battaglia-Hsu
- INSERM U1256 NGERE, Université de Lorraine, 54500 Vandœuvre-lès-Nancy, France; (G.G.); (R.M.); (M.M.); (S.-F.B.-H.)
| | - Mikaël Agopiantz
- INSERM U1256 NGERE, Université de Lorraine, 54500 Vandœuvre-lès-Nancy, France; (G.G.); (R.M.); (M.M.); (S.-F.B.-H.)
- Department of Reproductive Medicine, CHRU de Nancy, Université de Lorraine, 54000 Nancy, France
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Hergalant S, Casse JM, Oussalah A, Houlgatte R, Helle D, Rech F, Vallar L, Guéant JL, Vignaud JM, Battaglia-Hsu SF, Gauchotte G. MicroRNAs miR-16 and miR-519 control meningioma cell proliferation via overlapping transcriptomic programs shared with the RNA-binding protein HuR. Front Oncol 2023; 13:1158773. [PMID: 37601663 PMCID: PMC10433742 DOI: 10.3389/fonc.2023.1158773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 07/14/2023] [Indexed: 08/22/2023] Open
Abstract
Introduction Meningiomas are the most common type of primary central nervous system tumors. In about 80% cases, these tumors are benign and grow very slowly, but the remainder 20% can unlock higher proliferation rates and become malignant. In this study we examined two miRs, miR-16 and miR-519, and evaluated their role in tumorigenesis and cell growth in human meningioma. Methods A cohort of 60 intracranial grade 1 and grade 2 human meningioma plus 20 healthy meningeal tissues was used to quantify miR-16 and miR-519 expressions. Cell growth and dose-response assays were performed in two human meningioma cell lines, Ben-Men-1 (benign) and IOMM-Lee (aggressive). Transcriptomes of IOMM-lee cells were measured after both miR-mimics transfection, followed by integrative bioinformatics to expand on available data. Results In tumoral tissues, we detected decreased levels of miR-16 and miR-519 when compared with arachnoid cells of healthy patients (miR-16: P=8.7e-04; miR-519: P=3.5e-07). When individually overexpressing these miRs in Ben-Men-1 and IOMM-Lee, we observed that each showed reduced growth (P<0.001). In IOMM-Lee cell transcriptomes, downregulated genes, among which ELAVL1/HuR (miR-16: P=6.1e-06; miR-519:P=9.38e-03), were linked to biological processes such as mitotic cell cycle regulation, pre-replicative complex, and brain development (FDR<1e-05). Additionally, we uncovered a specific transcriptomic signature of miR-16/miR-519-dysregulated genes which was highly enriched in HuR targets (>6-fold; 79.6% of target genes). Discussion These results were confirmed on several public transcriptomic and microRNA datasets of human meningiomas, hinting that the putative tumor suppressor effect of these miRs is mediated, at least in part, via HuR direct or indirect inhibition.
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Affiliation(s)
- Sébastien Hergalant
- INSERM, U1256, NGERE – Nutrition, Genetics, and Environmental Risk Exposure, Faculty of Medicine of Nancy, University of Lorraine, Vandoeuvre-lès-Nancy, France
| | - Jean-Matthieu Casse
- INSERM, U1256, NGERE – Nutrition, Genetics, and Environmental Risk Exposure, Faculty of Medicine of Nancy, University of Lorraine, Vandoeuvre-lès-Nancy, France
| | - Abderrahim Oussalah
- INSERM, U1256, NGERE – Nutrition, Genetics, and Environmental Risk Exposure, Faculty of Medicine of Nancy, University of Lorraine, Vandoeuvre-lès-Nancy, France
- Department of Molecular Medicine and Personalized Therapeutics, University Hospital of Nancy (CHRU), Vandoeuvre-lès-Nancy, France
- Department of Biochemistry, Molecular Biology, Nutrition, and Metabolism, University Hospital of Nancy (CHRU), Vandoeuvre-lès-Nancy, France
| | - Rémi Houlgatte
- INSERM, U1256, NGERE – Nutrition, Genetics, and Environmental Risk Exposure, Faculty of Medicine of Nancy, University of Lorraine, Vandoeuvre-lès-Nancy, France
| | - Déborah Helle
- INSERM, U1256, NGERE – Nutrition, Genetics, and Environmental Risk Exposure, Faculty of Medicine of Nancy, University of Lorraine, Vandoeuvre-lès-Nancy, France
| | - Fabien Rech
- Department of Neurosurgery, University Hospital of Nancy (CHRU), Nancy, France
- CNRS, UMR7039, CRAN - Centre de Recherche en Automatique de Nancy, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Laurent Vallar
- Genomics and Proteomics, Department of Oncology, Luxembourg Institute of Health, Luxembourg, Luxembourg
| | - Jean-Louis Guéant
- INSERM, U1256, NGERE – Nutrition, Genetics, and Environmental Risk Exposure, Faculty of Medicine of Nancy, University of Lorraine, Vandoeuvre-lès-Nancy, France
- Department of Molecular Medicine and Personalized Therapeutics, University Hospital of Nancy (CHRU), Vandoeuvre-lès-Nancy, France
- Department of Biochemistry, Molecular Biology, Nutrition, and Metabolism, University Hospital of Nancy (CHRU), Vandoeuvre-lès-Nancy, France
| | - Jean-Michel Vignaud
- INSERM, U1256, NGERE – Nutrition, Genetics, and Environmental Risk Exposure, Faculty of Medicine of Nancy, University of Lorraine, Vandoeuvre-lès-Nancy, France
- Department of Biopathology Institut De Cancérologie de Lorraine (CHRU-ICL), University Hospital of Nancy (CHRU), Nancy, France
- Centre de Ressources Biologiques BB-0033-00035, University Hospital of Nancy (CHRU), Nancy, France
| | - Shyue-Fang Battaglia-Hsu
- Department of Molecular Medicine and Personalized Therapeutics, University Hospital of Nancy (CHRU), Vandoeuvre-lès-Nancy, France
- Department of Biochemistry, Molecular Biology, Nutrition, and Metabolism, University Hospital of Nancy (CHRU), Vandoeuvre-lès-Nancy, France
- CNRS, UMR7039, CRAN - Centre de Recherche en Automatique de Nancy, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Guillaume Gauchotte
- INSERM, U1256, NGERE – Nutrition, Genetics, and Environmental Risk Exposure, Faculty of Medicine of Nancy, University of Lorraine, Vandoeuvre-lès-Nancy, France
- Department of Biopathology Institut De Cancérologie de Lorraine (CHRU-ICL), University Hospital of Nancy (CHRU), Nancy, France
- Centre de Ressources Biologiques BB-0033-00035, University Hospital of Nancy (CHRU), Nancy, France
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Ghemrawi R, Arnold C, Battaglia-Hsu SF, Pourié G, Trinh I, Bassila C, Rashka C, Wiedemann A, Flayac J, Robert A, Dreumont N, Feillet F, Guéant JL, Coelho D. SIRT1 activation rescues the mislocalization of RNA-binding proteins and cognitive defects induced by inherited cobalamin disorders. Metabolism 2019; 101:153992. [PMID: 31672445 DOI: 10.1016/j.metabol.2019.153992] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/16/2019] [Accepted: 09/20/2019] [Indexed: 01/01/2023]
Abstract
BACKGROUND The molecular consequences of inborn errors of vitamin B12 or cobalamin metabolism are far from being understood. Moreover, innovative therapeutic strategies are needed for the treatment of neurological outcomes that are usually resistant to conventional treatments. Our previous findings suggest a link between SIRT1, cellular stress and RNA binding proteins (RBP) mislocalization in the pathological mechanisms triggered by impaired vitamin B12 metabolism. OBJECTIVES AND METHODS The goal of this study was to investigate the effects of the pharmacological activation of SIRT1 using SRT1720 on the molecular mechanisms triggered by impaired methionine synthase activity. Experiments were performed in vitro with fibroblasts from patients with the cblG and cblC inherited defects of vitamin B12 metabolism and in vivo with an original transgenic mouse model of methionine synthase deficiency specific to neuronal cells. Subcellular localization of the RBPs HuR, HnRNPA1, RBM10, SRSF1 and Y14 was investigated by immunostaining and confocal microscopy in patient fibroblasts. RBPs methylation and phosphorylation were studied by co-immunoprecipitation and proximity ligation assay. Cognitive performance of the transgenic mice treated with SRT1720 was measured with an aquatic maze. RESULTS Patient fibroblasts with cblC and cblG defects of vitamin B12 metabolism presented with endoplasmic reticulum stress, altered methylation, phosphorylation and subcellular localization of HuR, HnRNPA1 and RBM10, global mRNA mislocalization and increased HnRNPA1-dependent skipping of IRF3 exons. Incubation of fibroblasts with cobalamin, S-adenosyl methionine and okadaic acid rescued the localization of the RBPs and mRNA. The SIRT1 activating compound SRT1720 inhibited ER stress and rescued RBP and mRNA mislocalization and IRF3 splicing. Treatment with this SIRT1 agonist prevented all these hallmarks in patient fibroblasts but it also improved the deficient hippocampo-dependent learning ability of methionine synthase conditional knock-out mice. CONCLUSIONS By unraveling the molecular mechanisms triggered by inborn errors of cbl metabolism associating ER stress, RBP mislocalization and mRNA trafficking, our study opens novel therapeutic perspectives for the treatment of inborn errors of vitamin B12 metabolism.
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Affiliation(s)
- Rose Ghemrawi
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France
| | - Carole Arnold
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France.
| | - Shyue-Fang Battaglia-Hsu
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France.
| | - Grégory Pourié
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France.
| | - Isabelle Trinh
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France.
| | - Christine Bassila
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France
| | - Charif Rashka
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France.
| | - Arnaud Wiedemann
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France; Université de Lorraine, CHRU-Nancy, National Center of Inborn Errors of Metabolism, F-54000 Nancy, France
| | - Justine Flayac
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France.
| | - Aurélie Robert
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France.
| | - Natacha Dreumont
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France.
| | - François Feillet
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France; Université de Lorraine, CHRU-Nancy, National Center of Inborn Errors of Metabolism, F-54000 Nancy, France.
| | - Jean-Louis Guéant
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France; Université de Lorraine, CHRU-Nancy, National Center of Inborn Errors of Metabolism, F-54000 Nancy, France.
| | - David Coelho
- Université de Lorraine, Inserm, UMRS 1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure, F-54000 Nancy, France; Université de Lorraine, CHRU-Nancy, National Center of Inborn Errors of Metabolism, F-54000 Nancy, France.
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Pouget C, Hergalant S, Lardenois E, Lacomme S, Houlgatte R, Carpentier C, Dehais C, Rech F, Taillandier L, Sanson M, Appay R, Colin C, Figarella-Branger D, Battaglia-Hsu SF, Gauchotte G. Ki-67 and MCM6 labeling indices are correlated with overall survival in anaplastic oligodendroglioma, IDH1-mutant and 1p/19q-codeleted: a multicenter study from the French POLA network. Brain Pathol 2019; 30:465-478. [PMID: 31561286 DOI: 10.1111/bpa.12788] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 09/19/2019] [Indexed: 12/14/2022] Open
Abstract
Anaplastic oligodendroglioma (AO), IDH-mutant and 1p/19q codeleted (IDHmut+/1p19qcodel), is a high-grade glioma with only limited prognostic markers. The primary objective of this study was to evaluate, by immunohistochemistry, the prognostic value of two proliferation markers, MCM6 and Ki-67, in a large series of IDHmut+/1p19qcodel AO included in the POLA ("Prise en charge des Oligodendrogliomes Anaplasiques") French national multicenter network. We additionally examined the transcriptome obtained from this series to understand the functional pathways dysregulated with the mRNA overexpression of these two markers. The labeling indices (LI) of MCM6 and Ki-67 were obtained via computer-assisted color image analyses on immunostained AO tissues of the cohort (n = 220). Furthermore, a subgroup of AO (n = 68/220) was used to perform transcriptomic analyses. A high LI of either MCM6 (≥50%) or Ki-67 (≥15%) correlated with shorter overall survival, both in univariate (P = 0.013 and P = 0.004, respectively) and multivariate analyses (P = 0.027; multivariate Cox model including age, mitotic index, MCM6 and Ki-67). MCM6 and Ki-67 LI also correlated with overall survival in an additional retrospective cohort of 30 grade II IDHmut+/1p19qcodel oligodendrogliomas. The prognostic value of MCM6 mRNA level was confirmed in The Cancer Genome Atlas (TCGA) IDHmut+/1p19qcodel gliomas. The transcriptomic approach revealed that high transcriptional expressions of MCM6 and MKI67 were both linked positively with cell cycle progression, DNA replication, mitosis, pro-neural phenotype as well as neurogenesis, and negatively with microglial cell activation, immune response, positive regulation of myelination, oligodendrocyte development, beta-amyloid binding and postsynaptic specialization. In conclusion, the overexpression of MCM6 and/or Ki-67 is independently associated to shorter overall survival in IDHmut+/1p19qcodel AO. These two easy-to-use and cost-effective markers could thus be used concurrently in routine pathology practice. Additionally, the transcriptomic analyses showed that AO with high proliferation index have down-regulated immune response and lower microglial cells activation, and bears pro-neural phenotype.
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Affiliation(s)
- Celso Pouget
- Department of Pathology, CHRU, Nancy, France.,INSERM U1256, NGERE, Faculté de Médecine de Nancy, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Sébastien Hergalant
- INSERM U1256, NGERE, Faculté de Médecine de Nancy, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Emilie Lardenois
- Department of Pathology, CHRU, Nancy, France.,INSERM U1256, NGERE, Faculté de Médecine de Nancy, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Stéphanie Lacomme
- Centre de Ressources Biologiques, CHRU, BB-0033-00035, Nancy, France
| | - Rémi Houlgatte
- INSERM U1256, NGERE, Faculté de Médecine de Nancy, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Catherine Carpentier
- Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Inserm U 1127, CNRS UMR 7225, ICM, F-75013, Paris, France
| | - Caroline Dehais
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, 75013, Paris, France
| | - Fabien Rech
- Department of Neurosurgery, CHRU, Nancy, France.,Institut des Neurosciences, INSERM U1051, Montpellier, France
| | | | - Marc Sanson
- Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Inserm U 1127, CNRS UMR 7225, ICM, F-75013, Paris, France.,AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, 75013, Paris, France.,Onconeurotek, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Romain Appay
- Aix-Marseille Univ, CNRS, INP, Inst. Neurophysiopathol, Marseille, France.,AP-HM, Hôpital de la Timone, Service d'Anatomie Pathologique et de Neuropathologie and Centre de Ressources Biologiques CRB-TBM, BB-0033-00097, Marseille, France
| | - Carole Colin
- Aix-Marseille Univ, CNRS, INP, Inst. Neurophysiopathol, Marseille, France
| | - Dominique Figarella-Branger
- Aix-Marseille Univ, CNRS, INP, Inst. Neurophysiopathol, Marseille, France.,AP-HM, Hôpital de la Timone, Service d'Anatomie Pathologique et de Neuropathologie and Centre de Ressources Biologiques CRB-TBM, BB-0033-00097, Marseille, France
| | - Shyue-Fang Battaglia-Hsu
- INSERM U1256, NGERE, Faculté de Médecine de Nancy, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Guillaume Gauchotte
- Department of Pathology, CHRU, Nancy, France.,INSERM U1256, NGERE, Faculté de Médecine de Nancy, Université de Lorraine, Vandoeuvre-lès-Nancy, France.,Centre de Ressources Biologiques, CHRU, BB-0033-00035, Nancy, France
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5
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Pierre C, Agopiantz M, Brunaud L, Battaglia-Hsu SF, Max A, Pouget C, Nomine C, Lomazzi S, Vignaud JM, Weryha G, Oussalah A, Gauchotte G, Busby-Venner H. COPPS, a composite score integrating pathological features, PS100 and SDHB losses, predicts the risk of metastasis and progression-free survival in pheochromocytomas/paragangliomas. Virchows Arch 2019; 474:721-734. [DOI: 10.1007/s00428-019-02553-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 02/26/2019] [Accepted: 02/27/2019] [Indexed: 11/30/2022]
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6
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Battaglia-Hsu SF, Ghemrawi R, Coelho D, Dreumont N, Mosca P, Hergalant S, Gauchotte G, Sequeira JM, Ndiongue M, Houlgatte R, Alberto JM, Umoret R, Robert A, Paoli J, Jung M, Quadros EV, Guéant JL. Inherited disorders of cobalamin metabolism disrupt nucleocytoplasmic transport of mRNA through impaired methylation/phosphorylation of ELAVL1/HuR. Nucleic Acids Res 2018; 46:7844-7857. [PMID: 30016500 PMCID: PMC6125644 DOI: 10.1093/nar/gky634] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 06/26/2018] [Accepted: 07/12/2018] [Indexed: 12/12/2022] Open
Abstract
The molecular mechanisms that underlie the neurological manifestations of patients with inherited diseases of vitamin B12 (cobalamin) metabolism remain to date obscure. We observed transcriptomic changes of genes involved in RNA metabolism and endoplasmic reticulum stress in a neuronal cell model with impaired cobalamin metabolism. These changes were related to the subcellular mislocalization of several RNA binding proteins, including the ELAVL1/HuR protein implicated in neuronal stress, in this cell model and in patient fibroblasts with inborn errors of cobalamin metabolism and Cd320 knockout mice. The decreased interaction of ELAVL1/HuR with the CRM1/exportin protein of the nuclear pore complex and its subsequent mislocalization resulted from hypomethylation at R-217 produced by decreased S-adenosylmethionine and protein methyl transferase CARM1 and dephosphorylation at S221 by increased protein phosphatase PP2A. The mislocalization of ELAVL1/HuR triggered the decreased expression of SIRT1 deacetylase and genes involved in brain development, neuroplasticity, myelin formation, and brain aging. The mislocalization was reversible upon treatment with siPpp2ca, cobalamin, S-adenosylmethionine, or PP2A inhibitor okadaic acid. In conclusion, our data highlight the key role of the disruption of ELAVL1/HuR nuclear export, with genomic changes consistent with the effects of inborn errors of Cbl metabolisms on brain development, neuroplasticity and myelin formation.
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Affiliation(s)
- Shyue-Fang Battaglia-Hsu
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Rose Ghemrawi
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - David Coelho
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Natacha Dreumont
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Pauline Mosca
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Sébastien Hergalant
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Guillaume Gauchotte
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Jeffrey M Sequeira
- Division of Hematology/Oncology, Department of Medicine, SUNY-Downstate Medical Center, Brooklyn, New York, NY, USA
| | - Mariam Ndiongue
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Rémi Houlgatte
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Jean-Marc Alberto
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Remy Umoret
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Aurélie Robert
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Justine Paoli
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Martin Jung
- Department of Medical Biochemistry and Molecular Biology, Saarland University, Building 44, Homburg 66421, Germany
| | - Edward V Quadros
- Division of Hematology/Oncology, Department of Medicine, SUNY-Downstate Medical Center, Brooklyn, New York, NY, USA
| | - Jean-Louis Guéant
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
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7
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8
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Abstract
Important progress has been made on cytokine signaling in response to kidney injury in the past decade, especially cytokine signaling mediated by extracellular vesicles (EVs). For example, EVs released by injured renal tubular epithelial cells (TECs) can regulate intercellular communications and influence tissue recovery via both regulating the expression and transferring cytokines, growth factors, as well as other bioactive molecules at the site of injury. The effects of EVs on kidney tissue seem to vary depending on the sources of EVs; however, the literature data are often inconsistent. For example, in rodents EVs derived from mesenchymal stem cells (MSC-EVs) and endothelial progenitor cells (EPC-EVs) can have both beneficial and harmful effects on injured renal tissue. Caution is thus needed in the interpretation of these data as contradictory findings on EVs may not only be related to the origin of EVs, they can also be caused by the different methods used for EV isolation and the physiological and pathological states of the tissues/cells under which they were obtained. Here, we review and discuss our current understanding related to the immunomodulatory function of EVs in renal tubular repair in the hope of encouraging further investigations on mechanisms related to their antiinflammatory and reparative role to better define the therapeutic potential of EVs in renal diseases.
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Affiliation(s)
- Eva Feigerlová
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Medical Faculty, University of Lorraine, Lorraine, France.,Medical Faculty, University of Lorraine, Lorraine, France.,INSERM, UMR 1082, Poitiers , France.,Medical and Pharmaceutical Faculty, University of Poitiers , Poitiers , France
| | - Shyue-Fang Battaglia-Hsu
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Medical Faculty, University of Lorraine, Lorraine, France.,Regional University Hospital Center of Nancy, Vandœuvre les Nancy, France
| | - Thierry Hauet
- INSERM, UMR 1082, Poitiers , France.,Medical and Pharmaceutical Faculty, University of Poitiers , Poitiers , France.,Service de Biochimie, Pôle BIOSPHARM, CHU de Poitiers, Poitiers , France
| | - Jean-Louis Guéant
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Medical Faculty, University of Lorraine, Lorraine, France.,Regional University Hospital Center of Nancy, Vandœuvre les Nancy, France
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9
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Gauchotte G, Hergalant S, Vigouroux C, Casse JM, Houlgatte R, Kaoma T, Helle D, Brochin L, Rech F, Peyre M, Labrousse F, Vallar L, Guéant JL, Vignaud JM, Battaglia-Hsu SF. Cytoplasmic overexpression of RNA-binding protein HuR is a marker of poor prognosis in meningioma, and HuR knockdown decreases meningioma cell growth and resistance to hypoxia. J Pathol 2017; 242:421-434. [PMID: 28493484 DOI: 10.1002/path.4916] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/19/2017] [Accepted: 04/26/2017] [Indexed: 11/11/2022]
Abstract
HuR regulates cytoplasmic mRNA stability and translatability, and the HuR expression level has been shown to correlate with poor disease outcome in several cancer types; however, the prognostic value and potential pro-oncogenic properties of HuR in meningioma remain unclear. Thus, in the present study, we analysed 85 meningioma tissue samples to establish the relationship between HuR expression, tumour cell proliferation, and/or patient survival. In addition, we examined the anti-proliferative effects of HuR knockdown in two meningioma cell lines (IOMM-Lee and Ben-Men-1) and conducted transcriptome-wide analyses (IOMM-Lee cells) to elucidate the molecular consequences of HuR knockdown. The results of the present study showed HuR cytoplasmic expression to correlate positively with tumour grade (p = 1.2 × 10-8 ) and negatively with progression-free and overall survival (p = 0.01) time in human meningioma tissues. In vitro, siHuR-induced HuR knockdown was shown to reduce the growth of both Ben-Men-1 (p = 2 × 10-8 ) and IOMM-Lee (p = 4 × 10-9 ) cells. Transcriptome analyses revealed HuR knockdown in IOMM-Lee cells to deregulate the HIF1A signalling pathway (p = 1.5 × 10-6 ) and to up-regulate the expression of genes essential for the assembly of the cytoplasmic mRNA processing body, global genome nucleotide-excision repair, poly(A)-specific ribonuclease activity, the positive regulation of apoptosis and of cell cycle arrest, and the negative regulation of RNA splicing [p(FDR) < 0.001]. Interestingly, HuR knockdown under hypoxic culture conditions further potentiated the effects of HuR knockdown on cell growth, apoptosis, and HIF1A expression. We thus conclude that cytoplasmic HuR expression is a marker of poor prognosis in meningioma and that HuR is a promising potential therapeutic target for use in tumours refractory to standard therapies. Copyright © 2017 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Guillaume Gauchotte
- INSERM U954, Faculty of Medicine, Université de Lorraine, Vandoeuvre-lès-Nancy, France.,Department of Pathology, CHRU, Nancy, France
| | - Sébastien Hergalant
- INSERM U954, Faculty of Medicine, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | | | - Jean-Matthieu Casse
- INSERM U954, Faculty of Medicine, Université de Lorraine, Vandoeuvre-lès-Nancy, France.,Department of Pathology, CHRU, Nancy, France
| | - Rémi Houlgatte
- INSERM U954, Faculty of Medicine, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Tony Kaoma
- Proteome and Genome Research Unit, Department of Oncology, Luxembourg Institute of Health, Luxembourg, Luxembourg
| | - Déborah Helle
- INSERM U954, Faculty of Medicine, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | | | - Fabien Rech
- Department of Neurosurgery, CHRU, Nancy, France.,Institut des Neurosciences, INSERM U1051, Montpellier, France
| | - Matthieu Peyre
- Sorbonne Université, UPMC University Paris 06, INSERM, CNRS, UM 75, U 1127, UMR 7225, ICM, Paris, France.,Department of Neurosurgery, Groupe Hospitalier Pitié Salpêtrière, AP-HP, Paris, France
| | | | - Laurent Vallar
- Proteome and Genome Research Unit, Department of Oncology, Luxembourg Institute of Health, Luxembourg, Luxembourg
| | - Jean-Louis Guéant
- INSERM U954, Faculty of Medicine, Université de Lorraine, Vandoeuvre-lès-Nancy, France.,M2TP, Division of Biochemistry and Molecular Biology, CHRU, Vandoeuvre-lès-Nancy, France
| | - Jean-Michel Vignaud
- INSERM U954, Faculty of Medicine, Université de Lorraine, Vandoeuvre-lès-Nancy, France.,Department of Pathology, CHRU, Nancy, France.,Centre de Ressources Biologiques, BB-0033-00035, CHRU Nancy, France
| | - Shyue-Fang Battaglia-Hsu
- INSERM U954, Faculty of Medicine, Université de Lorraine, Vandoeuvre-lès-Nancy, France.,M2TP, Division of Biochemistry and Molecular Biology, CHRU, Vandoeuvre-lès-Nancy, France
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10
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Feigerlová E, Battaglia-Hsu SF. IL-6 signaling in diabetic nephropathy: From pathophysiology to therapeutic perspectives. Cytokine Growth Factor Rev 2017; 37:57-65. [PMID: 28363692 DOI: 10.1016/j.cytogfr.2017.03.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 03/21/2017] [Indexed: 01/05/2023]
Abstract
Diabetic nephropathy (DN) is a leading cause of chronic kidney disease (CKD). Interleukin-6 (IL-6) signaling participates in inflammation responses central to the progression of DN. Current evidence suggests that these IL-6 responses are mediated via gp130-STAT3 dependent mechanisms which, on one hand, trigger globally the transition from innate to adaptive immune response, and on the other hand act locally for tissue remodeling and immune cell infiltration. In diabetic conditions the role of IL-6 is not well elucidated. Both IL-6 classical signaling pathway via receptor IL-6R (IL-6R) and IL-6 trans-signaling pathway via soluble IL-6R (sIL-6R) were shown to participate in the pathogenesis and progression of DN, and IL-6 appears to influence renal cells also in an autocrine manner. To date, evidence is limited. The goal of this review is to provide an overview of our current understanding on the role of IL-6 signaling in DN and to delineate challenges for future research. Putative sequential events related to IL-6 secretion by different cell populations in diabetic conditions are outlined. Further, we discuss potential applications of anti-IL-6 therapy in the context of DN.
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Affiliation(s)
- Eva Feigerlová
- CHU de Poitiers, Service d'Endocrinologie, Pole DUNE, Poitiers, France; Université de Poitiers, UFR Médecine Pharmacie, Poitiers, France; INSERM, CIC 1402 & U1082, University of Poitiers, France.
| | - Shyue-Fang Battaglia-Hsu
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Medical Faculty, University of Lorraine and Regional University Hospital Center of Nancy, Vandœuvre les Nancy, France
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11
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Feigerlová E, Battaglia-Hsu SF. Role of post-transcriptional regulation of mRNA stability in renal pathophysiology: focus on chronic kidney disease. FASEB J 2016; 31:457-468. [PMID: 27849555 DOI: 10.1096/fj.201601087rr] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 11/07/2016] [Indexed: 11/11/2022]
Abstract
Chronic kidney disease (CKD) represents an important public health problem. Its progression to end-stage renal disease is associated with increased morbidity and mortality. The determinants of renal function decline are not fully understood. Recent progress in the understanding of post-transcriptional regulation of mRNA stability has helped the identification of both the trans- and cis-acting elements of mRNA as potential markers and therapeutic targets for difficult-to-diagnose and -treat diseases, including CKDs such as diabetic nephropathy. Human antigen R (HuR), a trans-acting element of mRNA, is an RNA binding factor (RBF) best known for its ability to stabilize AU-rich-element-containing mRNAs. Deregulated HuR subcellular localization or expression occurs in a wide range of renal diseases, such as metabolic acidosis, ischemia, and fibrosis. Besides RBFs, recent evidence revealed that noncoding RNA, such as microRNA and long noncoding RNA, participates in regulating mRNA stability and that aberrant noncoding RNA expression accounts for many pathologic renal conditions. The goal of this review is to provide an overview of our current understanding of the post-transcriptional regulation of mRNA stability in renal pathophysiology and to offer perspectives for this class of diseases. We use examples of diverse renal diseases to illustrate different mRNA stability pathways in specific cellular compartments and discuss the roles and impacts of both the cis- and trans-activating factors on the regulation of mRNA stability in these diseases.-Feigerlová, E., Battaglia-Hsu, S.-F. Role of post-transcriptional regulation of mRNA stability in renal pathophysiology: focus on chronic kidney disease.
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Affiliation(s)
- Eva Feigerlová
- Service d'Endocrinologie, Centre Hospitalier Universitaire de Poitiers, Pôle DUNE, Poitiers, France; .,Université de Poitiers, Unité de Formation et de Recherche Médecine Pharmacie, Poitiers, France.,Clinical Investigation Centre 1402, Unité 1082, INSERM, Poitiers, France; and
| | - Shyue-Fang Battaglia-Hsu
- Nutrition Génétique et Exposition aux Risques Environnementaux, INSERM Unité 954, Université de Lorraine et Centre Hospitalier Regional Universitaire de Nancy, Vandœuvre les Nancy, France
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12
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Do Cao J, Wiedemann A, Quinaux T, Battaglia-Hsu SF, Mainard L, Froissart R, Bonnemains C, Ragot S, Leheup B, Journeau P, Feillet F. 30 months follow-up of an early enzyme replacement therapy in a severe Morquio A patient: About one case. Mol Genet Metab Rep 2016; 9:42-45. [PMID: 27761411 PMCID: PMC5065040 DOI: 10.1016/j.ymgmr.2016.10.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 10/01/2016] [Accepted: 10/01/2016] [Indexed: 11/25/2022] Open
Abstract
Patients under 5 years were not evaluated in the phase-3 study for enzyme replacement therapy (ERT) in MPS IV A. Here we describe the evolution of a severe Morquio A pediatric patient who was diagnosed at 19 months old and treated by ERT at 21 months old for the next 30 months. Applying the standard ERT protocol on this very young patient appeared to reduce his urinary excretion of glycosaminoglycans (GAGs); the improvements in both the 6 minute-walk test (6MWT) and the stair climb test, however, were no different than those reported in the nature history study. Additionally, this young patient experienced many ERT-associated side effects, and as a result a specific corticosteroid protocol (1 mg/kg of betamethasone the day before and 1 h before the ERT infusion) was given to avoid adverse events. Under these treatments, the height of this patient increased during the first year of the ERT although no more height gain was observed thereafter for 18 months. However, despite of ERT, his bone deformities (including severe pectus carinatum) actually worsened and his medullar cervical spine compression showed no improvement (thus needed decompression surgery). CONCLUSION early ERT treatment did not improve the bone outcome in this severe MPS IV A patient after the 30 months-long treatment. A longer term follow up is required to further assess the efficacy of ERT on both the motor and the respiratory function of the patient.
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Affiliation(s)
- J Do Cao
- Reference Center for Inborn Errors of Metabolism, University Children's Hospital, 5 rue du Morvan, 54511 Vandoeuvre-les-Nancy, France
| | - A Wiedemann
- Reference Center for Inborn Errors of Metabolism, University Children's Hospital, 5 rue du Morvan, 54511 Vandoeuvre-les-Nancy, France
| | - T Quinaux
- Reference Center for Inborn Errors of Metabolism, University Children's Hospital, 5 rue du Morvan, 54511 Vandoeuvre-les-Nancy, France
| | - S F Battaglia-Hsu
- Reference Center for Inborn Errors of Metabolism, University Children's Hospital, 5 rue du Morvan, 54511 Vandoeuvre-les-Nancy, France
| | - L Mainard
- Radiology Department, University Children's Hospital, Vandoeuvre-les-Nancy, France
| | - R Froissart
- Biochemistry and Molecular Biology, University Hospital, Lyon, France
| | - C Bonnemains
- Reference Center for Inborn Errors of Metabolism, University Children's Hospital, 5 rue du Morvan, 54511 Vandoeuvre-les-Nancy, France
| | - S Ragot
- Rehabilitation center, University Children's Hospital, Vandoeuvre-les-Nancy, France
| | - B Leheup
- Genetic Department, University Children's Hospital, Vandoeuvre-les-Nancy, France
| | - P Journeau
- Pediatric Orthopedic surgery department, University Children's Hospital, Vandoeuvre-les-Nancy, France
| | - F Feillet
- Reference Center for Inborn Errors of Metabolism, University Children's Hospital, 5 rue du Morvan, 54511 Vandoeuvre-les-Nancy, France
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13
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Feigerlova E, Demarquet L, Melhem H, Ghemrawi R, Battaglia-Hsu SF, Ewu E, Alberto JM, Helle D, Weryha G, Guéant JL. Methyl donor deficiency impairs bone development via peroxisome proliferator-activated receptor-γ coactivator-1α-dependent vitamin D receptor pathway. FASEB J 2016; 30:3598-3612. [PMID: 27435264 DOI: 10.1096/fj.201600332r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 07/05/2016] [Indexed: 11/11/2022]
Abstract
Deficiency in methyl donor (folate and vitamin B12) and in vitamin D is independently associated with altered bone development. Previously, methyl donor deficiency (MDD) was shown to weaken the activity of nuclear receptor coactivator, peroxisome proliferator-activated receptor-γ coactivator-1α (PGC1α), for nuclear signaling in rat pups, including estrogen receptor-α and estrogen-related receptor-α; its effect on vitamin D receptor (VDR) signaling, however, is unknown. We studied bone development under MDD in rat pups and used human MG-63 preosteoblast cells to better understand the associated molecular mechanism. In young rats, MDD decreased total body bone mineral density, reduced tibia length, and impaired growth plate maturation, and in preosteoblasts, MDD slowed cellular proliferation. Mechanistic studies revealed decreased expression of VDR, estrogen receptor-α, PGC1α, arginine methyltransferase 1, and sirtuin 1 in both rat proximal diaphysis of femur and in MG-63, as well as decreased nuclear VDR-PGC1α interaction in MG-63 cells. The weaker VDR-PGC1α interaction could be attributed to the reduced protein expression, imbalanced PGC1α methylation/acetylation, and nuclear VDR sequestration by heat shock protein 90 (HSP90). These together compromised bone development, which is reflected by lowered bone alkaline phosphatase and increased proadipogenic peroxisome proliferator-activated receptor-γ, adiponectin, and estrogen-related receptor-α expression. Of interest, under MDD, the bone development effects of 1,25-dihydroxyvitamin D3 were ineffectual and these could be rescued by the addition of S-adenosylmethionine, which restored expression of arginine methyltransferase 1, PGC1α, adiponectin, and HSP90. In conclusion, MDD inactivates vitamin D signaling via both disruption of VDR-PGC1α interaction and sequestration of nuclear VDR attributable to HSP90 overexpression. These data suggest that vitamin D treatment may be ineffective under MDD.-Feigerlova, E., Demarquet, L., Melhem, H., Ghemrawi, R., Battaglia-Hsu, S.-F., Ewu, E., Alberto, J.-M., Helle, D., Weryha, G., Guéant, J.-L. Methyl donor deficiency impairs bone development via peroxisome proliferator-activated receptor-γ coactivator-1α-dependent vitamin D receptor pathway.
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Affiliation(s)
- Eva Feigerlova
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Faculty of Medicine, University of Lorraine, Vandœuvre les Nancy, France; Division of Endocrinology, Regional University Hospital Center of Nancy, Vandœuvre les Nancy, France
| | - Lea Demarquet
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Faculty of Medicine, University of Lorraine, Vandœuvre les Nancy, France
| | - Hassan Melhem
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Faculty of Medicine, University of Lorraine, Vandœuvre les Nancy, France
| | - Rose Ghemrawi
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Faculty of Medicine, University of Lorraine, Vandœuvre les Nancy, France
| | - Shyue-Fang Battaglia-Hsu
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Faculty of Medicine, University of Lorraine, Vandœuvre les Nancy, France
| | - Essi Ewu
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Faculty of Medicine, University of Lorraine, Vandœuvre les Nancy, France
| | - Jean-Marc Alberto
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Faculty of Medicine, University of Lorraine, Vandœuvre les Nancy, France
| | - Deborah Helle
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Faculty of Medicine, University of Lorraine, Vandœuvre les Nancy, France
| | - Georges Weryha
- Division of Endocrinology, Regional University Hospital Center of Nancy, Vandœuvre les Nancy, France
| | - Jean-Louis Guéant
- INSERM U954, Nutrition Génétique et Exposition aux Risques Environnementaux, Faculty of Medicine, University of Lorraine, Vandœuvre les Nancy, France;
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14
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Jeannesson-Thivisol E, Feillet F, Chéry C, Perrin P, Battaglia-Hsu SF, Herbeth B, Cano A, Barth M, Fouilhoux A, Mention K, Labarthe F, Arnoux JB, Maillot F, Lenaerts C, Dumesnil C, Wagner K, Terral D, Broué P, de Parscau L, Gay C, Kuster A, Bédu A, Besson G, Lamireau D, Odent S, Masurel A, Guéant JL, Namour F. Genotype-phenotype associations in French patients with phenylketonuria and importance of genotype for full assessment of tetrahydrobiopterin responsiveness. Orphanet J Rare Dis 2015; 10:158. [PMID: 26666653 PMCID: PMC5024853 DOI: 10.1186/s13023-015-0375-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 12/08/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Mutations in Phenylalanine Hydroxylase (PAH) gene cause phenylketonuria. Sapropterin (BH4), the enzyme cofactor, is an important therapeutical strategy in phenylketonuria. However, PAH is a highly polymorphic gene and it is difficult to identify BH4-responsive genotypes. We seek here to improve prediction of BH4-responsiveness through comparison of genotypes, BH4-loading test, predictions of responsiveness according to the literature and types and locations of mutations. METHODS A total of 364 French patients among which, 9 % had mild hyperphenylalaninemia, 17.7 % mild phenylketonuria and 73.1 % classical phenylketonuria, benefited from a 24-hour BH4-loading test and had the PAH gene sequenced and analyzed by Multiplex Ligation Probe Amplification. RESULTS Overall, 31.6 % of patients were BH4-responsive. The number of different mutations found was 127, including 26 new mutations. The mutations c.434A > T, c.500A > T, c.529G > C, c.1045 T > G and c.1196 T > C were newly classified as being BH4-responsive. We identified 261 genotypes, among which 46 were newly recognized as being BH4-responsive. Even though patients carry 2 responsive alleles, BH4-responsiveness cannot be predicted with certainty unless they present mild hyperphenylalaninemia. BH4-responsiveness cannot be predicted in patients carrying one responsive mutation only. In general, the milder the phenotype is, the stronger the BH4-response is. Almost exclusively missense mutations, particularly in exons 12, 11 and 8, are associated with BH4-responsiveness and any other type of mutation predicts a negative response. CONCLUSIONS This study is the first of its kind, in a French population, to identify the phenotype associated with several combinations of PAH mutations. As others, it highlights the necessity of performing simultaneously BH4 loading test and molecular analysis in monitoring phenylketonuria patients.
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Affiliation(s)
- Elise Jeannesson-Thivisol
- Reference Center for Inherited Metabolic Diseases, University Hospital of Nancy, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
- INSERM U954, Department of Nutrition-Genetics-Environmental Risk Exposure, University of Lorraine, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
| | - François Feillet
- Reference Center for Inherited Metabolic Diseases, University Hospital of Nancy, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
- INSERM U954, Department of Nutrition-Genetics-Environmental Risk Exposure, University of Lorraine, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
| | - Céline Chéry
- Reference Center for Inherited Metabolic Diseases, University Hospital of Nancy, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
- INSERM U954, Department of Nutrition-Genetics-Environmental Risk Exposure, University of Lorraine, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
| | - Pascal Perrin
- Reference Center for Inherited Metabolic Diseases, University Hospital of Nancy, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
- INSERM U954, Department of Nutrition-Genetics-Environmental Risk Exposure, University of Lorraine, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
| | - Shyue-Fang Battaglia-Hsu
- Reference Center for Inherited Metabolic Diseases, University Hospital of Nancy, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
- INSERM U954, Department of Nutrition-Genetics-Environmental Risk Exposure, University of Lorraine, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
| | - Bernard Herbeth
- Reference Center for Inherited Metabolic Diseases, University Hospital of Nancy, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
- INSERM U954, Department of Nutrition-Genetics-Environmental Risk Exposure, University of Lorraine, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
| | - Aline Cano
- Reference Center for Inherited Metabolic Diseases, Timone Hospital, Marseille, France
| | - Magalie Barth
- Department of Biochemistry and Genetics, Angers University Hospital, Angers, France
| | - Alain Fouilhoux
- Reference Center for Inherited Metabolic Diseases, Hospices Civils de Lyon, Bron, France
| | - Karine Mention
- Reference Center for Inherited Metabolic Diseases, Jeanne de Flandres Hospital, Lille, France
| | - François Labarthe
- Department of Pediatric Medicine, Clocheville Hospital, Tours, France
| | - Jean-Baptiste Arnoux
- Reference Center for Inherited Metabolic Diseases, Necker-Enfants Malades Hospital, Paris, France
| | - François Maillot
- Department of Internal Medicine, Tours University Hospital, Tours, France
| | | | - Cécile Dumesnil
- Pediatric Hematology and Oncology, Rouen University-Hospital, Rouen, France
| | - Kathy Wagner
- Department of Pediatrics, Lenval Hospital, Nice, France
| | - Daniel Terral
- Department of Pediatrics, Hotel-Dieu Hospital, Clermont-Ferrand, France
| | - Pierre Broué
- Department of Pediatric Hepatology and Metabolic Diseases, Children Hospital, Toulouse, France
| | | | - Claire Gay
- Department of Pediatrics, Saint-Etienne University-Hospital, Saint-Etienne, France
| | - Alice Kuster
- Pediatric Department, Nantes University Hospital, Nantes, France
| | - Antoine Bédu
- Neonatology Department, Mère-Enfant Hospital, Limoges, France
| | - Gérard Besson
- Department of Neurology, University Hospital of Grenoble, Grenoble, France
| | - Delphine Lamireau
- Department of Pediatrics, Pellegrin-Enfants Hospital, Bordeaux, France
| | - Sylvie Odent
- Department of Clinical Genetics, Rennes University Hospital, Rennes, France
| | - Alice Masurel
- Department of Medical Genetics, Dijon University-Hospital, Dijon, France
| | - Jean-Louis Guéant
- Reference Center for Inherited Metabolic Diseases, University Hospital of Nancy, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
- INSERM U954, Department of Nutrition-Genetics-Environmental Risk Exposure, University of Lorraine, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France
| | - Fares Namour
- Reference Center for Inherited Metabolic Diseases, University Hospital of Nancy, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France.
- INSERM U954, Department of Nutrition-Genetics-Environmental Risk Exposure, University of Lorraine, 9 ave Forêt de Haye, BP 184, 54511, Vandoeuvre-lès-Nancy, France.
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15
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Delaunay-Lemarie C, Vincourt JB, Marie B, Battaglia-Hsu SF, Etienne S, Sirveaux F, Nguyen Thi PL, Magdalou J, Vignaud JM, Gauchotte G. In malignant cartilagenous tumors, immunohistochemical expression of procollagen PC1CP peptide is higher and that of PC2CP lower than in benign cartilaginous lesions. Virchows Arch 2015; 467:329-37. [PMID: 26100916 DOI: 10.1007/s00428-015-1799-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 05/12/2015] [Accepted: 06/08/2015] [Indexed: 01/27/2023]
Abstract
Few studies on oncogenesis of chondrosarcoma (CS) are available in the literature. Our previously published experimental evidence suggests that while the C-propeptide of procollagen Iα1 (PC1CP), a component of cartilage, favors tumor progression, the C-propeptide of procollagen IIα1 (PC2CP) exerts antitumor properties. In this study, we analyzed expression of PC1CP and PC2CP by immunohistochemistry in a series of enchondromas and CS. Our retrospective series consisted of 88 cases, including 43 CSs, 34 enchondromas and 11 nontumor samples. Immunohistochemical staining for PC1CP and PC2CP was evaluated in the cytoplasm and in the extracellular matrix (ECM). Diffuse staining for PC1CP in ECM was significantly more frequent in tumor than in nontumor samples (32 % vs. 0 %; p = 0.03), and in CSs than in enchondromas (44 vs. 18 %; p = 0.02). ECM semiquantitative score was higher in tumors than in nontumor samples (p < 0.005) and higher in CSs than in enchondromas (p = 0.05). Staining for PC2CP in ECM was more frequently found in enchondromas than in CSs (59 vs. 33 %; p = 0.02). ECM semiquantitative score was higher in enchondromas than in CSs (p = 0.02). Diffuse staining for PC1CP in combination with absence of staining for PC2CP had 94 % specificity for CS but with a sensitivity of only 35 %. Expression of neither PC1CP nor PC2CP correlated with recurrence-free survival or occurrence of metastases. In conclusion, we show that the expression of PC1CP is higher and that of PC2CP lower in malignant cartilaginous tumors. These results support an oncogenic role of PC1CP and anti-oncogenic property of PC2CP in cartilaginous tumors.
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Vigouroux C, Casse JM, Battaglia-Hsu SF, Brochin L, Luc A, Paris C, Lacomme S, Gueant JL, Vignaud JM, Gauchotte G. Methyl(R217)HuR and MCM6 are inversely correlated and are prognostic markers in non small cell lung carcinoma. Lung Cancer 2015; 89:189-96. [PMID: 26013954 DOI: 10.1016/j.lungcan.2015.05.008] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 05/02/2015] [Accepted: 05/09/2015] [Indexed: 01/24/2023]
Abstract
OBJECTIVES In non small cell lung carcinoma (NSCLC), earlier studies supported a prognostic value of intra-cytoplasmic HuR expression. HuR is a RNA binding protein previously shown to stimulate proliferation, but the link between HuR and proliferation in NSCLC has not yet been evaluated. The first objective of this study was to analyze the expression of HuR in a series of NSCLC and to correlate this to two proliferation markers, Ki-67 and MCM6. As potential post-transcriptional regulatory mechanisms for HuR expression, two miRNAs, miR16 and miR519, were also analyzed. Finally, because HuR methylation could be involved in its nucleocytoplasmic shuttling, the expression of methyl(R217)HuR and its relation to cancer survival were determined. MATERIALS AND METHODS Immunohistochemistry was used to evaluate the expression of HuR, methy(R217)HuR, Ki-67 and MCM6 in a series of 190 NSCLCs. The level of miR16 and miR519 was determined by qRT-PCR. RESULTS Higher cytoplasmic HuR staining was found in tumor vs. control paired normal lung (p<0.0001), but without correlation with survival. The level of methyl(R217)HuR was correlated both significantly with intra-cytoplasmic HuR staining (p<0.001), and overall survival (p=0.01). MCM6 correlated to a poorer overall survival (p<0.01). Both MCM6 and Ki-67 were positively correlated with HuR nuclear staining (p<0.0001 and p<0.001, respectively). On the contrary, MCM6 and Ki-67 correlated inversely to methyl(R217)HuR (p<0.001 and p=0.01, respectively). The levels of miR16 and miR519 were significantly lower in tumor tissue vs. paired normal lung (p<0.0001), but only miR519 correlated inversely to HuR expression (p=0.01). CONCLUSION While overall cytoplasmic HuR level was higher in tumor tissues, we found unexpectedly that methyl(R217)HuR was a marker of good prognosis. Furthermore, our data suggest that HuR level could be regulated by miR519. Finally, we demonstrated that Ki-67 and MCM6, both correlated with HuR, are valuable markers of poor prognosis in NSCLC.
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Affiliation(s)
| | - Jean-Matthieu Casse
- Department of Pathology, CHU Nancy, France; INSERM U954, Faculty of Medicine, Université de Lorraine, Nancy, France
| | - Shyue-Fang Battaglia-Hsu
- INSERM U954, Faculty of Medicine, Université de Lorraine, Nancy, France; Department of Molecular Biology and Biochemistry, CHU Nancy, France
| | | | - Amandine Luc
- INGRES, EA7298, Faculty of Medicine, Université de Lorraine, Nancy, France
| | - Christophe Paris
- INGRES, EA7298, Faculty of Medicine, Université de Lorraine, Nancy, France; Department of Occupational Diseases, CHU Nancy, France
| | | | - Jean-Louis Gueant
- INSERM U954, Faculty of Medicine, Université de Lorraine, Nancy, France; Department of Molecular Biology and Biochemistry, CHU Nancy, France
| | - Jean-Michel Vignaud
- Department of Pathology, CHU Nancy, France; INSERM U954, Faculty of Medicine, Université de Lorraine, Nancy, France; Centre de Ressources Biologiques, BB-0033-00035, CHU Nancy, France
| | - Guillaume Gauchotte
- Department of Pathology, CHU Nancy, France; INSERM U954, Faculty of Medicine, Université de Lorraine, Nancy, France.
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Orozco-Barrios CE, Battaglia-Hsu SF, Arango-Rodriguez ML, Ayala-Davila J, Chery C, Alberto JM, Schroeder H, Daval JL, Martinez-Fong D, Gueant JL. Vitamin B12-impaired metabolism produces apoptosis and Parkinson phenotype in rats expressing the transcobalamin-oleosin chimera in substantia nigra. PLoS One 2009; 4:e8268. [PMID: 20027219 PMCID: PMC2791211 DOI: 10.1371/journal.pone.0008268] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2009] [Accepted: 11/19/2009] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Vitamin B12 is indispensable for proper brain functioning and cytosolic synthesis of S-adenosylmethionine. Whether its deficiency produces effects on viability and apoptosis of neurons remains unknown. There is a particular interest in investigating these effects in Parkinson disease where Levodopa treatment is known to increase the consumption of S-adenosylmethionine. To cause deprivation of vitamin B12, we have recently developed a cell model that produces decreased synthesis of S-adenosylmethionine by anchoring transcobalamin (TCII) to the reticulum through its fusion with Oleosin (OLEO). METHODOLOGY Gene constructs including transcobalamin-oleosin (TCII-OLEO) and control constructs, green fluorescent protein-transcobalamin-oleosin (GFP-TCII-OLEO), oleosin-transcobalamin (OLEO-TCII), TCII and OLEO were used for expression in N1E-115 cells (mouse neuroblastoma) and in substantia nigra of adult rats, using a targeted transfection with a Neurotensin polyplex system. We studied the viability and the apoptosis in the transfected cells and targeted tissue. The turning behavior was evaluated in the rats transfected with the different plasmids. PRINCIPAL FINDINGS The transfection of N1E-115 cells by the TCII-OLEO-expressing plasmid significantly affected cell viability and increased immunoreactivity of cleaved Caspase-3. No change in propidium iodide uptake (used as a necrosis marker) was observed. The transfected rats lost neurons immunoreactive to tyrosine hydroxylase. The expression of TCII-OLEO was observed in cells immunoreactive to tyrosine hydroxylase of the substantia nigra, with a superimposed expression of cleaved Caspase-3. These cellular and tissular effects were not observed with the control plasmids. Rats transfected with TCII-OLEO expressing plasmid presented with a significantly higher number of turns, compared with those transfected with the other plasmids. CONCLUSIONS/SIGNIFICANCE In conclusion, the TCII-OLEO transfection was responsible for apoptosis in N1E-115 cells and rat substantia nigra and for Parkinson-like phenotype. This suggests evaluating whether vitamin B12 deficit could aggravate the PD in patients under Levodopa therapy by impairing S-adenosylmethionine synthesis in substantia nigra.
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Affiliation(s)
- Carlos Enrique Orozco-Barrios
- Department of Physiology, Biophysics and Neuroscience, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Mexico City, Mexico
- Inserm U954, Faculté de Médecine, Nancy-Université, Nancy, France
| | | | - Martha Ligia Arango-Rodriguez
- Department of Physiology, Biophysics and Neuroscience, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Mexico City, Mexico
| | - Jose Ayala-Davila
- Department of Physiology, Biophysics and Neuroscience, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Mexico City, Mexico
| | - Celine Chery
- Inserm U954, Faculté de Médecine, Nancy-Université, Nancy, France
| | | | - Henry Schroeder
- Institut national de la recherche agronomique (INRA), URAFPA, Nancy-Université, Nancy, France
| | - Jean-Luc Daval
- Inserm U954, Faculté de Médecine, Nancy-Université, Nancy, France
| | - Daniel Martinez-Fong
- Department of Physiology, Biophysics and Neuroscience, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Mexico City, Mexico
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Poulain S, Lacomme S, Battaglia-Hsu SF, du Manoir S, Brochin L, Vignaud JM, Martinet N. Signalling with retinoids in the human lung: validation of new tools for the expression study of retinoid receptors. BMC Cancer 2009; 9:423. [PMID: 19961602 PMCID: PMC2797528 DOI: 10.1186/1471-2407-9-423] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2009] [Accepted: 12/04/2009] [Indexed: 01/09/2023] Open
Abstract
Background Retinoid Receptors are involved in development and cell homeostasis. Alterations of their expressions have been observed in lung cancer. However, retinoid chemoprevention trials in populations at risk to develop such tumors have failed. Therefore, the pertinence of new clinical trials using second generation retinoid requires prior better understanding of retinoid signalling. This is our aim when validating extensively research tools, focused on Retinoic Acid Receptor beta, whose major role in lung cancer is documented. Methods Biocomputing was used to assess the genomic organization of RAR beta. Its putative RAR-beta1' promoter features were investigated experimentally. Specific measures realized, with qRT-PCR Syber Green assays and a triplex of Taqman probes, were extensively validated to establish Retinoid Receptors mRNAs reference values for in vivo normal human bronchial cells, lung tumors and cell lines. Finally, a pan-RAR-beta antibody was generated and extensively validated by western-blot and immunoprecipitation. Results No promoter-like activity was found for RAR-beta1'. RAR-beta2 mRNAs increase signs the normal differentiation of the human bronchial epithelium while a decrease is observed in most lung cancer cell lines. Accordingly, it is also, along with RXR beta, down-regulated in lung tumors. When using nuclear extracts of BEAS-2B and normal lung cells, only the RAR-beta2 long protein isoform was recognized by our antibody. Conclusion Rigorous samples processing and extensive biocomputing, were the key factors for this study. mRNA reference values and validated tools can now be used to advance researches on retinoid signalling in the lung.
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Affiliation(s)
- Stéphane Poulain
- Faculté de Médecine, Laboratoire de Pathologie Cellulaire et Moléculaire en Nutrition, INSERM U724, Centre de Ressources Biologiques, CHU de Nancy, 54505 Vandoeuvre-Lès-Nancy, France.
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Feillet F, Chery C, Namour F, Kimmoun A, Favre E, Lorentz E, Battaglia-Hsu SF, Guéant JL. Evaluation of neonatal BH4 loading test in neonates screened for hyperphenylalaninemia. Early Hum Dev 2008; 84:561-7. [PMID: 18321666 DOI: 10.1016/j.earlhumdev.2008.01.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2007] [Revised: 12/12/2007] [Accepted: 01/07/2008] [Indexed: 10/22/2022]
Abstract
BACKGROUND The outcome in phenylketonuria is related to the early diagnosis and management due to neonatal screening. AIMS To assess the interest of tetrahydrobiopterin (BH4) loading test and phenylalanine hydroxylase (PAH) genotyping in the management of neonates with hyperphenylalaninemia (HPA). STUDY DESIGN We evaluate the effectiveness of a BH4 loading test (20 mg/kg) in ten neonates screened for HPA. We evaluated the time required to reach a target plasma Phenylalanine (Phe) level below 300 micromol/l. We compared these ten BH4-loaded patients to the 10 previous neonates non-loaded with BH4. In all these patients, the PAH genotype was determined. RESULTS One loaded patient had biopterin synthesis deficiency and has been retrieved from statistical analysis. All others patients have PAH deficiency. Between the BH4 loaded group (L) and the BH4 non-loaded group (NL), a statistically significant difference was observed in the average time required to reached the target Phe level (13.56 +/- 4.30 (L) vs. 20.6 +/- 7.59 days (NL) [p < 0.02]). Results of the genotyping from all but one of these 19 patients indicated that among all mutations present in this patient population, there were 4 known PAH mutations associated with BH4 responsiveness (p.R261Q, the p.V388 M, the p.E390G and the p.Y414C). These mutations were found in 4 non-loaded and 6 loaded patients. Two patients had a more than 90% reduction in their plasma Phe level within 24 h after the load. One of these patients had a PTPS deficiency. The other fully responsive patient (p.Y414C and IVS10-11G>A) has been treated with BH4 from birth with an excellent metabolic control for three years now. CONCLUSION BH4 loading test improves the management of HPA. It allows an immediate identification of the children fully responsive to BH4. Our results therefore suggest the incorporation of BH4 loading test in the management of neonates screened for HPA.
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Affiliation(s)
- François Feillet
- Reference Centre for Inborn Errors of Metabolism, Department of Pediatry, CHU of Nancy, Allée du Morvan, Vandoeuvre les Nancy, 54500, France.
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Feillet F, Merten M, Battaglia-Hsu SF, Rabier D, Kobayashi K, Straczek J, Brivet M, Favre E, Guéant JL. Evidence of cataplerosis in a patient with neonatal classical galactosemia presenting as citrin deficiency. J Hepatol 2008; 48:517-22. [PMID: 18207281 DOI: 10.1016/j.jhep.2007.11.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2007] [Revised: 11/07/2007] [Accepted: 11/10/2007] [Indexed: 12/04/2022]
Abstract
Classical galactosemia is an autosomal recessive disorder caused by a deficiency of the enzyme galactose-1-phosphate uridyltransferase. Undoubtedly, some of the short term complications are linked to the toxic effects of the accumulated abnormal metabolites (galactose-1-phosphate and galactitol). However, the physiopathology of neonatal liver failure remains unclear. We report the case of a 7-week-old girl who was first diagnosed with liver failure, hypoprotidaemia, ascites and generalized edemas. High citrulline (293 micromol/L), on initial plasma amino acid, suggested the diagnosis of citrin deficiency. As the citric acid cycle intermediates were non-detectable (oxoglutarate, succinate and citrate), a cataplerotic state was suspected. As a result, citrate (as an anaplerotic treatment) induced a clear improvement in her liver function. Four weeks later, this patient was switched to a galactose-free formula (as recommended in citrin deficiency with galactosemia) and her pathological status returned to normal. Citrin deficiency was later ruled out by molecular biology studies; then we reintroduced a galactose-containing formula which re-evoked rapidly vomiting, galactose aversion and hepatic cytolysis and the diagnosis of classical galactosemia was established. Our case clearly shows that cataplerosis could play a role in the pathophysiology of the neonatal liver disease observed in classical galactosemia.
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Affiliation(s)
- François Feillet
- Centre de Référence des Maladies Héréditaires du Métabolisme et Inserm U724, CHU et Faculté de Médecine de Nancy, France.
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