News Potential MS Therapeutic Targets Found in Plasma Metabolites Potential MS Therapeutic Targets Found in Plasma Metabolites by Patricia Inacio, PhD | November 11, 2015 Share this article: Share article via email Copy article link In a new study entitled āUntargeted plasma metabolomics identifies endogenous metabolite with drug-like properties in chronic animal model of multiple sclerosis,ā a team of researchers performed a comparative analysis of metabolites between control mice and a mouse model with experimental autoimmune encephalitis (EAE, the most commonly used experimental model for the human inflammatory demyelinating disease, multiple sclerosis). The team identified EAE-specific alterations in metabolites, therefore suggesting their potential importance in multiple sclerosis (MS) pathogenesis. The study was published in The Journal of Biological Chemistry. Metabolic alterations have been reported in several diseases as either potential disease biomarkers or therapeutic targets. In fact, recent metabolomics studies (aiming at understating the set of metabolites present within an organism, cell, or tissue) identified potential disease biomarkers in neurological diseases, including Alzheimerās disease, Parkinsonās disease, and in animal models of MS. Here, authors performed a metabolomics analysis on plasma from a EAE mouse model. The analysis was conducted at the chronic phase of the disease with the goal of identifying if this phase was associated with a unique metabolic profile when compared with control mice. EXCLUSIVE: Genentech/Roche Interview with MS News Today on Promising MS Therapy Ocrelizumab The team identified, out of 324 metabolites analyzed, 100 metabolites as significantly altered between the EAE mice and controls. The identified molecules spanned different metabolic classes and pathways, being identified as lipids, amino acid, peptide, xenobiotic, carbohydrate, nucleotide and energy pathways. Researchers observed that the majority of the metabolic alterations in EAE mice occurred in lipids. Of note, bioinformatic analysis showed that six of the metabolic pathways altered in EAE mice included alpha linolenic acid and linoleic acid metabolism, both polyunsaturated fatty acids (PUFAs). The metabolism of the PUFA pathway (which includes omega-3 and omega-6 fatty acids) was found to be down-regulated in the plasma of EAE. In fact, PUFA metabolites were previously identified as being decreased in mouse models of MS and in MS patients. The team performed further studies to identify what was the biological relevance for MS disease of a down-regulation of omega-3. To this end, researchers administered EAE mice with a daily oral dose of resolvin D1, a downstream metabolite of omega-3. Authors observed that resolvin D1 decreased disease progression by inhibiting the rise of autoreactive T cells. Moreover, the team found that resolvin D1 induced a population of macrophages that is involved in tissue repair and anti-inflammatory responses. Hence, resolvin D1 acts by reducing the pro-inflammatory environment in the central nervous system of EAE mice. The team highlights that using a metabolomics approach can identify potential therapeutic targets or metabolites that may protect against MS, such as resolvin D1. Print This Page About the Author Patricia Inacio, PhD Patricia holds her PhD in cell biology from the University Nova de Lisboa, Portugal, and has served as an author on several research projects and fellowships, as well as major grant applications for European agencies. She also served as a PhD student research assistant in the Department of Microbiology & Immunology, Columbia University, New York, for which she was awarded a Luso-American Development Foundation (FLAD) fellowship. Tags biomarkers, lipids, omega 3
April 23, 2024 News by Mary Chapman Itās year 10 for MSAAās upcoming Improving Lives Benefit for MS
April 23, 2024 News by Margarida Maia, PhD AAN 2024: Subcutaneous Ocrevus led to nearly no relapses after year
April 22, 2024 News by Margarida Maia, PhD Viatris launches low-dose Copaxone generic formulation in Canada