Linked Life Data

19072255

Source:http://linkedlifedata.com/resource/pubmed/id/19072255

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2009-2-11
pubmed:abstractText
Experiments in lower organisms, such as worms and flies, indicate that the molecular chaperone protein heat shock protein 70 (HSP70) is a longevity factor. In contrast, we demonstrate here that mice overexpressing HSP70 display growth retardation and early death. HSP70 transgenic mice displayed increased levels of serum corticosterone and weaker expression and activity of the glucocorticoid receptor in the liver. Serum insulin-like growth factor-1 (IGF-1) concentrations in the transgenic mice were 50% lower than in the control mice, leading to growth retardation. HSP70 transgenic mice showed decreased expression of Casp9, which encodes caspase-9, and increased expression of the anti-apoptotic Bcl-2 gene, indicating that apoptosis is suppressed. Consequently, most of the transgenic animals died before the age of 18 months from tumors in their lungs and lymph nodes. We suggest that the proinflammatory and antiapoptotic effects of HSP70 might be responsible for the growth retardation, tumor formation, and early death observed in the HSP70 transgenic mice.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1549-1684
pubmed:author
pubmed:issnType
Print
pubmed:volume
11
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1013-20
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Over-expression of heat shock protein 70 in mice is associated with growth retardation, tumor formation, and early death.
pubmed:affiliation
Department for Molecular Biomedical Research, VIB, Ghent, Belgium.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't