Prion protein expression aids cellular uptake and veratridine-induced release of copper.

Abstract:

:The function of the prion protein is unknown despite suggestions it binds copper. Radioactive copper (Cu(67)) was used to demonstrate that histidine-dependent uptake of copper by cerebellar cells in culture is related to the level of PrP(c) expression. Copper is released by neurones at the synapse. Veratridine-induced release from synapses was proportional to the level of PrP(c) expression. Veratridine-induced release can be abolished only from PrP(c) expressing cells by pretreatment with phosphatidyl-specific phospholipase C, an enzyme that cleaves PrP(c) from the cell surface. These results suggest that PrP(c) aids cellular copper uptake and may have a function at the synapse related to release of copper during transmission.

journal_name

J Neurosci Res

authors

Brown DR

keywords:

subject

Has Abstract

pub_date

1999-12-01 00:00:00

pages

717-25

issue

5

eissn

0360-4012

issn

1097-4547

pii

10.1002/(SICI)1097-4547(19991201)58:5<717::AID-JNR

journal_volume

58

pub_type

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