A potential link between autoimmunity and neurodegeneration in immune-mediated neurological disease.

Abstract:

:Multiple sclerosis (MS) patients make antibodies to heterogeneous nuclear ribonuclear protein A1 (hnRNP-A1), a nucleocytoplasmic protein. We hypothesized this autoimmune reaction might contribute to neurodegeneration. Antibodies from MS patients reacted with hnRNP-A1-'M9', its nuclear translocation sequence. Transfection of anti-M9 antibodies into neurons resulted in neuronal injury and changes in transcripts related to hnRNP-A1 function. Importantly, RNA levels for the spinal paraplegia genes (SPGs) decreased. Changes in SPG RNA levels were confirmed in neurons purified from MS brains. Also, we show molecular interactions between spastin (the encoded protein of SPG4) and hnRNP-A1. These data suggest a link between autoimmunity, clinical phenotype and neurodegeneration in MS.

journal_name

J Neuroimmunol

authors

Lee S,Xu L,Shin Y,Gardner L,Hartzes A,Dohan FC,Raine C,Homayouni R,Levin MC

doi

10.1016/j.jneuroim.2011.02.007

subject

Has Abstract

pub_date

2011-06-01 00:00:00

pages

56-69

issue

1-2

eissn

0165-5728

issn

1872-8421

pii

S0165-5728(11)00031-2

journal_volume

235

pub_type

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