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Vallelunga A, Iannitti T, Capece S, Somma G, Russillo MC, Foubert-Samier A, Laurens B, Sibon I, Meissner WG, Barone P, Pellecchia MT. Serum miR-96-5P and miR-339-5P Are Potential Biomarkers for Multiple System Atrophy and Parkinson's Disease. Front Aging Neurosci 2021; 13:632891. [PMID: 34381349 PMCID: PMC8350521 DOI: 10.3389/fnagi.2021.632891] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 05/28/2021] [Indexed: 11/18/2022] Open
Abstract
Parkinson's disease (PD) and Multiple System Atrophy (MSA) are progressive neurodegenerative diseases with overlap of symptoms in early stages of disease. No reliable biomarker exists and the diagnosis is mainly based on clinical features. Several studies suggest that miRNAs are involved in PD and MSA pathogenesis. Our goal was to study two serum circulating microRNAs (miR-96-5p and miR-339-5p) as novel biomarkers for the differential diagnosis between PD and MSA. Serum samples were obtained from 51 PD patients, 52 MSA patients and 56 healthy controls (HC). We measured levels of miRNAs using quantitative PCR and compared the levels of miR-96-5p and miR-339-5p among PD, MSA and HC groups using a one-way analysis of variance. Correlations between miRNA expression and clinical data were calculated using Pearson's rho test. We used the miRTarBase to detect miRNA targets and STRING to evaluate co-expression relationship among target genes. MiR-96-5p was significantly increased in MSA patients compared with HC (Fold change (fc): 3.6; p = 0.0001) while it was decreased in PD patients compared with HC (Fold change: 4; p = 0.0002). Higher miR-96-5P levels were directly related to longer disease duration in MSA patients. We observed a significant increase of miR-339-5p in MSA patients compared with PD patients (fc: 2.5; p = 0.00013). miR-339-5p was increased in MSA patients compared with HC (fc: 2.4; p = 0.002). We identified 32 target genes of miR-96-5p and miR-339-5p, some of which are involved in neurodegenerative diseases. The study of those miRNAs could be useful to identify non-invasive biomarkers for early differential diagnosis between PD and MSA.
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Affiliation(s)
- Annamaria Vallelunga
- Neuroscience Section, Department of Medicine and Surgery, Center for Neurodegenerative Diseases, University of Salerno, Salerno, Italy
| | | | - Sabrina Capece
- Neuroscience Section, Department of Medicine and Surgery, Center for Neurodegenerative Diseases, University of Salerno, Salerno, Italy
| | - Gerardina Somma
- Neuroscience Section, Department of Medicine and Surgery, Center for Neurodegenerative Diseases, University of Salerno, Salerno, Italy
| | - Maria Claudia Russillo
- Neuroscience Section, Department of Medicine and Surgery, Center for Neurodegenerative Diseases, University of Salerno, Salerno, Italy
| | | | - Brice Laurens
- Centre Hospitalier Universitarie, Service de Neurologie, CHU Bordeaux, Bordeaux, France
| | - Igor Sibon
- Centre Hospitalier Universitarie, Service de Neurologie, CHU Bordeaux, Bordeaux, France
| | - Wassilios G Meissner
- Centre Hospitalier Universitarie, Service de Neurologie, CHU Bordeaux, Bordeaux, France.,Universitè de Bordeaux, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France.,CNRS, Institut des Maladies Neurodégénératives, UMR 5293, Bordeaux, France.,Department of Medicine, University of Otago, Christchurch, New Zealand
| | - Paolo Barone
- Neuroscience Section, Department of Medicine and Surgery, Center for Neurodegenerative Diseases, University of Salerno, Salerno, Italy
| | - Maria Teresa Pellecchia
- Neuroscience Section, Department of Medicine and Surgery, Center for Neurodegenerative Diseases, University of Salerno, Salerno, Italy
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Ubhi K, Rockenstein E, Kragh C, Inglis C, Spencer B, Michael S, Mante M, Adame A, Galasko D, Masliah E. Widespread microRNA dysregulation in multiple system atrophy - disease-related alteration in miR-96. Eur J Neurosci 2014; 39:1026-1041. [PMID: 24304186 PMCID: PMC4052839 DOI: 10.1111/ejn.12444] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Revised: 10/26/2013] [Accepted: 11/05/2013] [Indexed: 12/15/2022]
Abstract
MicroRNA (miRNA) are short sequences of RNA that function as post-transcriptional regulators by binding to target mRNA transcripts resulting in translational repression. A number of recent studies have identified miRNA as being involved in neurodegenerative disorders including Alzheimer's disease, Parkinson's disease and Huntington's disease. However, the role of miRNA in multiple system atrophy (MSA), a progressive neurodegenerative disorder characterized by oligodendroglial accumulation of alpha-synuclein remains unexamined. In this context, this study examined miRNA profiles in MSA cases compared with controls and in transgenic (tg) models of MSA compared with non-tg mice. The results demonstrate a widespread dysregulation of miRNA in MSA cases, which is recapitulated in the murine models. The study employed a cross-disease, cross-species approach to identify miRNA that were either specifically dysregulated in MSA or were commonly dysregulated in neurodegenerative conditions such as Alzheimer's disease, dementia with Lewy bodies, progressive supranuclear palsy and corticobasal degeneration or the tg mouse model equivalents of these disorders. Using this approach we identified a number of miRNA that were commonly dysregulated between disorders and those that were disease-specific. Moreover, we identified miR-96 as being up-regulated in MSA. Consistent with the up-regulation of miR-96, mRNA and protein levels of members of the solute carrier protein family SLC1A1 and SLC6A6, miR-96 target genes, were down-regulated in MSA cases and a tg model of MSA. These results suggest that miR-96 dysregulation may play a role in MSA and its target genes may be involved in the pathogenesis of MSA.
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Affiliation(s)
- Kiren Ubhi
- Department of Neurosciences, University of California, San Diego, California 92093-0624, USA
| | - Edward Rockenstein
- Department of Neurosciences, University of California, San Diego, California 92093-0624, USA
| | - Christine Kragh
- Department of Biomedicine, University of Aarhus, DK-8000 Aarhus, Denmark
| | - Chandra Inglis
- Department of Neurosciences, University of California, San Diego, California 92093-0624, USA
| | - Brian Spencer
- Department of Neurosciences, University of California, San Diego, California 92093-0624, USA
| | - Sarah Michael
- Department of Neurosciences, University of California, San Diego, California 92093-0624, USA
| | - Michael Mante
- Department of Neurosciences, University of California, San Diego, California 92093-0624, USA
| | - Anthony Adame
- Department of Neurosciences, University of California, San Diego, California 92093-0624, USA
| | - Douglas Galasko
- Department of Neurosciences, University of California, San Diego, California 92093-0624, USA
| | - Eliezer Masliah
- Department of Neurosciences, University of California, San Diego, California 92093-0624, USA
- Department of Pathology, University of California, San Diego, California 92093-0624, USA
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Gincel D, Regan MR, Jin L, Watkins AM, Bergles DE, Rothstein JD. Analysis of cerebellar Purkinje cells using EAAT4 glutamate transporter promoter reporter in mice generated via bacterial artificial chromosome-mediated transgenesis. Exp Neurol 2007; 203:205-12. [PMID: 17022974 DOI: 10.1016/j.expneurol.2006.08.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2006] [Revised: 07/20/2006] [Accepted: 08/02/2006] [Indexed: 11/19/2022]
Abstract
The EAAT4 glutamate transporter helps regulate excitatory neurotransmission and prevents glutamate-mediated excitotoxicity in the cerebellum. Immunohistochemistry and in situ hybridization have previously defined a cerebellar cell population expressing this protein. These methods, however, are not well suited for evaluating the dynamic regulation of the transporter and its gene-especially in living tissues. To better study EAAT4 expression and regulation, we generated bacterial artificial chromosome (BAC) promoter eGFP reporter transgenic mice. Histological analysis of the transgenic mice revealed that the EAAT4 promoter is active predominantly in Purkinje cells, but can also be modestly detected in other neurons early postnatally. EAAT4 promoter activity was not present in non-neuronal cells. Cerebellar organotypic slice cultures prepared from BAC transgenic mice provided a unique reagent to study transporter and Purkinje cell expression and regulation in living tissue. The correlation of promoter activity to protein expression makes the EAAT4 BAC promoter reporter a valuable tool to study regulation of EAAT4 expression.
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Affiliation(s)
- Dan Gincel
- Department of Neurology, Johns Hopkins University, Baltimore, MD 21287, USA
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