Journal
NEURON
Volume 36, Issue 4, Pages 585-596Publisher
CELL PRESS
DOI: 10.1016/S0896-6273(02)01045-0
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Funding
- NINDS NIH HHS [R01 NS043783, R01 NS43783] Funding Source: Medline
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The unfolded protein response (UPR) is a eukaryotic signaling pathway linking protein flux through the endoplasmic reticulum to transcription and translational repression. Herein, we demonstrate UPR activation in the leukodystrophy Pelizaeus-Merzbacher disease (PMD) as well as in three mouse models of this disease and transfected fibroblasts expressing mutant protein. The CHOP protein, widely known as a proapoptotic transcription factor, modulates pathogenesis in the mouse models of PMD; however, this protein exhibits antiapoptotic activity. Together, these data show that the UPR has the potential to modulate disease severity in many cells expressing mutant secretory pathway proteins. Thus, PMD represents the first member of a novel class of disparate degenerative diseases for which UPR activation and signaling is the common pathogenic mechanism.
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