Linked Life Data

3889615

Source:http://linkedlifedata.com/resource/pubmed/id/3889615

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1985-7-22
pubmed:abstractText
Several aprotic polar solvents were shown to induce mitotic aneuploidy in yeast: diethyl ketone, gamma-valerolactone, pyridine, pivalinic acid nitrile, phenylacetonitrile and fumaric acid dinitrile. Only fumaric acid dinitrile also strongly induced other types of genetic effects including mitotic crossing-over, mitotic gene conversion and point mutation. The other substances only induced aneuploidy and this only over a very narrow dose range. The treatment protocol used suggested that these chemicals acted via interference with tubulin assembly and disassembly causing a malfunctioning of spindle fiber microtubules. This hypothesis was tested using twice recycled porcine brain tubulin. Diethyl ketone, gamma-valerolactone, pyridine and phenylacetonitrile inhibited GTP-promoted assembly of porcine brain tubulin in vitro in the concentration range needed for the induction of mitotic aneuploidy in yeast. Pivalinic acid nitrile accelerated tubulin aggregation whereas fumaric acid dinitrile had no effect even at concentrations 18 times higher than the lowest tested concentration effective in yeast. The in vitro experiments with porcine brain tubulin further suggest that genetic change can result from interference with specific protein-protein interactions. Fumaric acid dinitrile was the only exception since it did induce aneuploidy but had no effects on the assembly of porcine brain tubulin. This could be caused either by interference with protein-protein interactions other than between molecules during assembly and disassembly of microtubules or species-specific differences in susceptibility between yeast spindle and porcine brain tubulin.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0027-5107
pubmed:author
pubmed:issnType
Print
pubmed:volume
150
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
203-10
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:articleTitle
Genetic change may be caused by interference with protein-protein interactions.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.