Sarm1 Deletion, but Not Wld^S, Confers Lifelong Rescue in a Mouse Model of Severe Axonopathy.

ABSTRACT: Studies with the Wld^S mutant mouse have shown that axon and synapse pathology in several models of neurodegenerative diseases are mechanistically related to injury-induced axon degeneration (Wallerian degeneration). Crucially, an absence of SARM1 delays Wallerian degeneration as robustly as Wld^S, but their relative capacities to confer long-term protection against related, non-injury axonopathy and/or synaptopathy have not been directly compared. While Sarm1 deletion or Wld^S can rescue perinatal lethality and widespread Wallerian-like axonopathy in young NMNAT2-deficient mice, we report that an absence of SARM1 enables these mice to survive into old age with no overt phenotype, whereas those rescued by Wld^S invariantly develop a progressive neuro

SUBMITTER: Gilley J 

PROVIDER: S-EPMC5640801 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature