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Synaptotagmin 13 is...
Synaptotagmin 13 is neuroprotective across motor neuron diseases
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Nizzardo, M (author)
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Taiana, M (author)
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Rizzo, F (author)
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Benitez, JA (author)
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- Nijssen, J (author)
- Karolinska Institutet
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Allodi, I (author)
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Melzi, V (author)
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Bresolin, N (author)
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Comi, GP (author)
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- Hedlund, E (author)
- Karolinska Institutet
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Corti, S (author)
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(creator_code:org_t)
- 2020-02-17
- 2020
- English.
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In: Acta neuropathologica. - : Springer Science and Business Media LLC. - 1432-0533 .- 0001-6322. ; 139:5, s. 837-853
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Abstract
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- In amyotrophic lateral sclerosis (ALS) and spinal muscular atrophy (SMA), spinal and lower brainstem motor neurons degenerate, but some motor neuron subtypes are spared, including oculomotor neurons (OMNs). The mechanisms responsible for this selective degeneration are largely unknown, but the molecular signatures of resistant and vulnerable motor neurons are distinct and offer clues to neuronal resilience and susceptibility. Here, we demonstrate that healthy OMNs preferentially express Synaptotagmin 13 (SYT13) compared to spinal motor neurons. In end-stage ALS patients, SYT13 is enriched in both OMNs and the remaining relatively resilient spinal motor neurons compared to controls. Overexpression of SYT13 in ALS and SMA patient motor neurons in vitro improves their survival and increases axon lengths. Gene therapy with Syt13 prolongs the lifespan of ALS mice by 14% and SMA mice by 50% by preserving motor neurons and delaying muscle denervation. SYT13 decreases endoplasmic reticulum stress and apoptosis of motor neurons, both in vitro and in vivo. Thus, SYT13 is a resilience factor that can protect motor neurons and a candidate therapeutic target across motor neuron diseases.
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- art (subject category)
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- By the author/editor
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Nizzardo, M
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Taiana, M
-
Rizzo, F
-
Benitez, JA
-
Nijssen, J
-
Allodi, I
-
show more...
-
Melzi, V
-
Bresolin, N
-
Comi, GP
-
Hedlund, E
-
Corti, S
-
show less...
- Articles in the publication
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Acta neuropathol ...
- By the university
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Karolinska Institutet