Hereditary spastic paraplegia-associated mutations in the NIPA1 gene and its Caenorhabditis elegans homolog trigger neural degeneration in vitro and in vivo through a gain-of-function mechanism.

Abstract excerpt

We studied the consequences of expression of wild-type (WT) human NIPA1 and two mutant forms of NIPA1 with known HSP-associated mutations (T45R and G106R) on cultured rat cortical neurons and using equivalent substitutions in the Caenorhabditis elegans NIPA1 homolog CeNIPA. WT NIPA1 localized in transfected neuronal and non-neuronal cells to the Golgi complex, a subset of synaptic vesicles, to a subset of early...

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