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2014 ; 1584
(ä): 52-8
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Pathological stress granules in Alzheimer s disease
#MMPMID25108040
Ash PE
; Vanderweyde TE
; Youmans KL
; Apicco DJ
; Wolozin B
Brain Res
2014[Oct]; 1584
(ä): 52-8
PMID25108040
show ga
A feature of neurodegenerative disease is the accumulation of insoluble protein
aggregates in the brain. In some conditions, including Amyotrophic Lateral
Sclerosis and Frontotemporal lobar degeneration, the primary aggregating entities
are RNA binding proteins. Through regulated prion-like assembly, RNA binding
proteins serve many functions in RNA metabolism that are essential for the
healthy maintenance of cells of the central nervous system. Those RNA binding
proteins that are the core nucleating factors of stress granules (SGs), including
TIA-1, TIAR, TTP and G3BP1, are also found in the pathological lesions of other
neurological conditions, such as Alzheimer's disease, where the hallmark
aggregating protein is not an RNA binding protein. This discovery suggests that
the regulated cellular pathway, which utilizes assembly of RNA binding proteins
to package and silence mRNAs during stress, may be integral in the aberrant
pathological protein aggregation that occurs in numerous neurodegenerative
conditions.