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MicroRNA regulate immune pathways in T-cells in multiple sclerosis (MS)

Journal article
Authors Margareta Jernås
Clas Malmeström
Markus Axelsson
Intawat Nookaew
Hans Wadenvik
Jan Lycke
Bob Olsson
Published in BMC Immunology
Volume 14
Issue 32
ISSN 1471-2172
Publication year 2013
Published at Institute of Neuroscience and Physiology
Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry
Institute of Medicine, Department of Internal Medicine and Clinical Nutrition
Institute of Medicine, Department of Molecular and Clinical Medicine
Language en
Links dx.doi.org/10.1186/1471-2172-14-32
www.biomedcentral.com/1471-2172/14/...
https://gup.ub.gu.se/file/109582
Keywords Autoimmunity, T-cell; Microarray, MicroRNA
Subject categories Biological Sciences

Abstract

Background: MicroRNA are small noncoding RNA molecules that are involved in the control of gene expression. To investigate the role of microRNA in multiple sclerosis (MS), we performed genome-wide expression analyses of mRNA and microRNA in T-cells from MS patients and controls. Methods: Heparin-anticoagulated peripheral blood was collected from MS-patients and healthy controls followed by isolation of T-cells. MicroRNA and RNA from T-cells was prepared and hybridized to Affymetrix miR 2.0 array and Affymetrix U133Plus 2.0 Human Genome array (Santa Clara, CA), respectively. Verifications were performed with real-time polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay (ELISA). Results: We identified 2,452 differentially expressed genes and 21 differentially expressed microRNA between MS patients and controls. By Kolmogorov-Smirnov test, 20 of 21 differentially expressed microRNA were shown to affect the expression of their target genes, many of which were involved in the immune system. Tumor necrosis factor ligand superfamily member 14 (TNFSF14) was a microRNA target gene significantly decreased in MS. The differential expression of mir-494, mir-197 and the predicted microRNA target gene TNFSF14 was verified by real-time PCR and ELISA. Conclusion: These findings indicate that microRNA may be important regulatory molecules in T-cells in MS.

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