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2015 ; 5
(ä): 14235
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LINGO-1 antibody ameliorates myelin impairment and spatial memory deficits in
experimental autoimmune encephalomyelitis mice
#MMPMID26383267
Sun JJ
; Ren QG
; Xu L
; Zhang ZJ
Sci Rep
2015[Sep]; 5
(ä): 14235
PMID26383267
show ga
More than 50% of multiple sclerosis patients develop cognitive impairment.
However, the underlying mechanisms are still unclear, and there is no effective
treatment. LINGO-1 (LRR and Ig domain containing NOGO receptor interacting
protein 1) has been identified as an inhibitor of oligodendrocyte differentiation
and myelination. Using the experimental autoimmune encephalomyelitis (EAE) mouse
model, we assessed cognitive function at early and late stages of EAE, determined
brain expression of myelin basic protein (MBP) and investigated whether the
LINGO-1 antibody could restore deficits in learning and memory and ameliorate any
loss of MBP. We found that deficits in learning and memory occurred in late EAE
and identified decreased expression of MBP in the parahippocampal cortex (PHC)
and fimbria-fornix. Moreover, the LINGO-1 antibody significantly improved
learning and memory in EAE and partially restored MBP in PHC. Furthermore, the
LINGO-1 antibody activated the AKT/mTOR signaling pathway regulating myelin
growth. Our results suggest that demyelination in the PHC and fimbria-fornix
might contribute to cognitive deficits and the LINGO-1 antibody could ameliorate
these deficits by promoting myelin growth in the PHC. Our research demonstrates
that LINGO-1 antagonism may be an effective approach to the treatment of the
cognitive impairment of multiple sclerosis patients.