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Griciuc, A. ; Aron, L.* ; Ueffing, M.

ER stress in retinal degeneration: A target for rational therapy?

Trends Mol. Med. 17, 442-451 (2011)

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Open Access Green as soon as Postprint is submitted to ZB.

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Mutations that cause rhodopsin misfolding and retention within the endoplasmic reticulum (ER) are a prominent cause of retinitis pigmentosa. Here, we discuss the hypothesis that the failure of photoreceptor neurons to adapt to the stress caused by rhodopsin accumulation in the ER leads to a global collapse of homeostasis and to retinal degeneration. We review the molecular mechanisms underlying the activity of local ER conformational sensors and stress-relaying modules and consider how ER-derived stress signals are amplified and implemented to impact on downstream processes, including rhodopsin clearance and cell fate control. The emerging view is that alterations to the systems responsible for the detection, transduction and implementation of ER stress might be used therapeutically to treat retinitis pigmentosa.

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