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A team of researchers has found that a cell type in the central nervous system known as oligodendrocytes might have a different role in the development of multiple sclerosis (MS) than previously thought.The study has been published in the 'Neuron Journal'.MS is driven by immune cells attacking oligodendrocytes and the myelin they produce, which is an insulating layer ensheathing nerve cells. These attacks disrupt information flow in the brain and spinal cord and cause nerve damage that triggers symptoms associated with MS such as tremors and loss of gait.Understanding which mechanisms influence the risk of MS is central to finding effective therapies. Previous genetic studies have found regions in the human genome that contain mutations (single nucleotide polymorphisms) associated with an increased risk of MS. Many of these regions are localized near genes that are active in immune cells.In this study, the researchers showed in mice and human brain samples that oligodendrocytes and their progenitors have an open configuration of the genome near immune genes and at MS-risk associated regions. This suggested that the MS risk mutations may have a role in the activation of nearby genes in oligodendrocytes and their progenitors, meaning they could play a more important part than previously thought in the development of MS."Our findings suggest that the risk for multiple sclerosis might manifest by misfunction not only of immune cells, but also of oligodendrocytes and their precursor cells," said Goncalo Castelo-Branco, professor at the Department of Medical Biochemistry and Biophysics, Karolinska Institutet, who conducted the study with co-first authors Mandy Meijer, a PhD student, and Eneritz Agirre, a researcher."These findings indicate that these cells can also be targeted for therapeutical approaches for MS, to prevent misfunction that might be caused by these mutations," Branco added.The study was funded by the European Union Horizon 2020, European Committee for Treatment and Research in Multiple Sclerosis, Swedish Research Council, the Swedish Brain Foundation, the Swedish Cancer Society, Knut and Alice Wallenberg Foundation, the Swedish Society for Medical Research, the Ming Wai Lau Centre for Reparative Medicine, "La Caixa" Foundation, NIH, the National Institute on Aging, the Olav Thon Foundation and Karolinska Institutet.( With inputs from ANI )Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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Technology :Study finds new genetic clues on multiple sclerosis risk

A team of researchers has found that a cell type in the central nervous system known as oligodendrocytes might have a different role in the development of multiple sclerosis (MS) than previously thought. ...