Linked Life Data

19661680

Source:http://linkedlifedata.com/resource/pubmed/id/19661680

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8
pubmed:dateCreated
2009-8-24
pubmed:abstractText
8S-Lipoxygenase (8S-LOX) is known as a mouse homolog of human 15S-LOX-2. 15S-LOX-2 was down-regulated in malignant transformation of prostate epithelial cells, and its overexpression caused cell cycle arrest. To determine whether 8S-LOX would have a growth inhibitory effect on prostate carcinoma, we obtained human prostate carcinoma PC-3 cells expressing 8S-LOX or 15S-LOX-2. The growth rate of cells measured by colorimetric assay was reduced by expression of 8S-LOX and 15S-LOX-2. The addition to enzyme-expressing cells of arachidonic acid enhanced the growth suppressive effect, whereas the expression of catalytically inactive mutants did not affect cell growth, suggesting that the effect was product-dependent. DNA microarray and quantitative reverse transcription-PCR analyses revealed that the c-myc mRNA coding region determinant-binding protein/insulin-like growth factor II mRNA-binding protein 1 (CRD-BP/IMP-1), known as an oncofetal protein, was down-regulated in 8S-LOX- and 15S-LOX-2-expressing PC-3 cells. Targeted knockdown of CRD-BP/IMP-1 resulted in inhibition of the DNA synthesis rate of PC-3 cells as measured by bromodeoxyuridine incorporation. We propose that expression of 8S-LOX and 15S-LOX-2 suppresses CRD-BP/IMP-1 expression, resulting in inhibition of human prostate carcinoma PC-3 cell proliferation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1347-6947
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
73
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1811-7
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Tumor-suppressive lipoxygenases inhibit the expression of c-myc mRNA coding region determinant-binding protein/insulin-like growth factor II mRNA-binding protein 1 in human prostate carcinoma PC-3 cells.
pubmed:affiliation
Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't