Pathogenic inflammation in the CNS of mice carrying human PLP1 mutations.

Abstract:

:Progressive forms of multiple sclerosis lead to chronic disability, substantial decline in quality of life and reduced longevity. It is often suggested that they occur independently of inflammation. Here we investigated the disease progression in mouse models carrying PLP1 point mutations previously found in patients displaying clinical features of multiple sclerosis. These mouse models show loss-of-function of PLP1 associated with neuroinflammation; the latter leading to clinically relevant axonal degeneration, neuronal loss and brain atrophy as demonstrated by inactivation of the recombination activating gene 1. Moreover, these pathological hallmarks were substantially amplified when we attenuated immune regulation by inactivation of the programmed cell death-1 gene. Our observations support the view that primary oligodendroglial abnormalities can evoke pathogenically relevant neuroinflammation that drives neurodegeneration, as observed in some forms of multiple sclerosis but also in other, genetically-mediated neurodegenerative disorders of the human nervous system. As many potent immunomodulatory drugs have emerged during the last years, it is tempting to consider immunomodulation as a treatment option not only for multiple sclerosis, but also for so far non-treatable, genetically-mediated disorders of the nervous system accompanied by pathogenic neuroinflammation.

journal_name

Hum Mol Genet

journal_title

Human molecular genetics

authors

Groh J,Friedman HC,Orel N,Ip CW,Fischer S,Spahn I,Schäffner E,Hörner M,Stadler D,Buttmann M,Varallyay C,Solymosi L,Sendtner M,Peterson AC,Martini R

doi

10.1093/hmg/ddw296

subject

Has Abstract

pub_date

2016-11-01 00:00:00

pages

4686-4702

issue

21

eissn

0964-6906

issn

1460-2083

pii

2525901

journal_volume

25

pub_type

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