Linked Life Data

10499539

Source:http://linkedlifedata.com/resource/pubmed/id/10499539

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
1999-10-12
pubmed:databankReference
pubmed:abstractText
We have identified a novel complementary DNA (cDNA) corresponding to a gene overexpressed in the rat ventral prostate after castration. This cDNA displays 89.4% identity with 453 bp of a mouse EST and 81.5% identity with 157 bp of a human EST and was named PARM-1 for prostatic androgen-repressed message-1. The complete cDNA is 1187 bp long and codes for a protein of 298 amino acids that contains four potential glycosylation sites and three half cystinyl residues. The PARM-1 gene was found to be expressed at quite low levels in most rat tissues including those of the urogenital tract. The kinetic of induction of PARM-1 gene in the prostate was highly correlated to the development of apoptosis in the whole organ. Supplementation of castrated animals with androgens reversed both the process of apoptosis and the overexpression of PARM-1 gene. Supplementation with estrogens did not result in an increase in the PARM-1 messenger RNA levels when compared with the castration alone. However, the treatment resulted in a more rapid return to intact levels in the castrated plus estrogen group. When apoptosis of testis and prostate was induced in vivo by hypophysectomy, it was found that PARM-1 was only overexpressed in the prostate. Therefore, PARM-1 seems to be regulated by androgens only in the prostate. Using in situ hybridization and immunohistological techniques, we have shown that PARM-1 gene product is found exclusively in the epithelial cells of involuting prostate. Analysis by flow cytometry of MAT LyLu epithelial cells transiently expressing PARM-1 protein did not allow us to demonstrate a direct effect of PARM-1 gene overexpression on the programmed death of the transfected cells. Treatment of MAT LyLu cells by transforming growth factor-beta induced apoptosis but had no effect on PARM-1 production. However PARM-1 protein has been detected by Western blotting in various cell lines such as MAT LyLu, MAT Lu, and PIF, which are androgen independent. This would suggest that PARM-1 gene product would be a marker for acquired androgen-independence of these tumor cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0013-7227
pubmed:author
pubmed:issnType
Print
pubmed:volume
140
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4789-99
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:10499539-Amino Acid Sequence, pubmed-meshheading:10499539-Androgen-Binding Protein, pubmed-meshheading:10499539-Animals, pubmed-meshheading:10499539-Apoptosis, pubmed-meshheading:10499539-Base Sequence, pubmed-meshheading:10499539-Blotting, Western, pubmed-meshheading:10499539-Cell Line, pubmed-meshheading:10499539-Cloning, Molecular, pubmed-meshheading:10499539-DNA, Complementary, pubmed-meshheading:10499539-Female, pubmed-meshheading:10499539-Gene Expression, pubmed-meshheading:10499539-Gene Expression Regulation, pubmed-meshheading:10499539-Hormones, pubmed-meshheading:10499539-Kinetics, pubmed-meshheading:10499539-Male, pubmed-meshheading:10499539-Molecular Sequence Data, pubmed-meshheading:10499539-Orchiectomy, pubmed-meshheading:10499539-Prostate, pubmed-meshheading:10499539-Rats, pubmed-meshheading:10499539-Rats, Wistar, pubmed-meshheading:10499539-Tissue Distribution
pubmed:year
1999
pubmed:articleTitle
A novel gene overexpressed in the prostate of castrated rats: hormonal regulation, relationship to apoptosis and to acquired prostatic cell androgen independence.
pubmed:affiliation
Biochemistry and Laboratory of Endocrinology, Institute of Pathology, University of Liège, Belgium.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't