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2016 ; 10
(6
): 434-443
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Misfolding leads the way to unraveling signaling pathways in the pathophysiology
of prion diseases
#MMPMID27870599
Puig B
; Altmeppen HC
; Glatzel M
Prion
2016[Nov]; 10
(6
): 434-443
PMID27870599
show ga
A misfolded version of the prion protein represents an essential component in the
pathophysiology of fatal neurodegenerative prion diseases, which affect humans
and animals alike. They may be of sporadic origin, acquired through exogenous
introduction of infectious misfolded prion protein, or caused by genetic
alterations in the prion protein coding gene. We have recently described a novel
pathway linking retention of mutant prion protein in the early secretory pathway
to activation p38-MAPK and a neurodegenerative phenotype in transgenic mice. Here
we review the consequences that mutations in prion protein have on intracellular
transport and stress responses focusing on protein quality control. We also
discuss the neurotoxic signaling elicited by the accumulation of mutant prion
protein in the endoplasmic reticulum and the Golgi apparatus. Improved knowledge
about these processes will help us to better understand complex pathogenesis of
prion diseases, a prerequisite for therapeutic strategies.
|*Protein Folding
[MESH]
|*Signal Transduction
[MESH]
|Animals
[MESH]
|Endoplasmic Reticulum/metabolism
[MESH]
|Golgi Apparatus/metabolism
[MESH]
|Humans
[MESH]
|Mice
[MESH]
|Mice, Transgenic
[MESH]
|Mitogen-Activated Protein Kinases/metabolism
[MESH]