Linked Life Data

10336667

Source:http://linkedlifedata.com/resource/pubmed/id/10336667

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1999-7-1
pubmed:abstractText
We have examined whether the Semliki Forest virus (SFV) expression vector can be used to manipulate the exocytotic machinery in cultured hippocampal neurons. Autaptic responses were recorded in individually identified neurons which overexpressed either a non-synaptic protein, the transferrin receptor, or the synaptic SNARE protein SNAP-25 (synaptosomal-associated protein of 25 kDA). In neurons overexpressing the transferrin receptor, autaptic responses occurred in a similar proportion and had similar amplitudes (12-18 h postinfection) as in uninfected control neurons. With increasing time after the infection, an increasing proportion of the transferrin receptor-overexpressing neurons showed changes in the shape of the cell body, but the autaptic responses appeared normal as long as recordings could be performed (up to 30 h postinfection). In contrast, in SNAP-25-overexpressing neurons, the proportion of responding cells was reduced 12-18 h after the infection, and the amplitude of the autaptic current in responding neurons was also reduced. The sensitivity to exogenously applied glutamate was, however, unchanged. Biochemical analysis showed that 50% of the overexpressed SNAP-25 was palmitoylated. The levels of two other SNAREs, syntaxin and synaptobrevin (also called vesicle-associated membrane protein), were not affected. Our results indicate that the SFV vector can provide an effective tool to study the function of proteins participating in neurotransmitter release.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0953-816X
pubmed:author
pubmed:issnType
Print
pubmed:volume
11
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1981-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Perturbation of the synaptic release machinery in hippocampal neurons by overexpression of SNAP-25 with the Semliki Forest virus vector.
pubmed:affiliation
Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't