Publication Date:
1990-02-09
Description:
Introduction of a normal retinoblastoma gene (RB) into retinoblastoma cells was previously shown to suppress several aspects of their neoplastic phenotype, including tumorigenicity in nude mice, thereby directly demonstrating a cancer suppression function of RB. To explore the possibility of a similar activity in a common adult tumor, RB expression was examined in three human prostate carcinoma cell lines. One of these, DU145, contained an abnormally small protein translated from an RB messenger RNA transcript that lacked 105 nucleotides encoded by exon 21. To assess the functional consequences of this mutation, normal RB expression was restored in DU145 cells by retrovirus-mediated gene transfer. Cells that maintained stable exogenous RB expression lost their ability to form tumors in nude mice, although their growth rate in culture was apparently unaltered. These results suggest that RB inactivation can play a significant role in the genesis of a common adult neoplasm and that restoration of normal RB-encoded protein in tumors could have clinical utility.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bookstein, R -- Shew, J Y -- Chen, P L -- Scully, P -- Lee, W H -- 5758/PHS HHS/ -- New York, N.Y. -- Science. 1990 Feb 9;247(4943):712-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, School of Medicine, University of California, San Diego, La Jolla 92093.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2300823" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Base Sequence
;
DNA/genetics
;
Gene Amplification
;
Gene Expression
;
Humans
;
Male
;
Mice
;
Mice, Nude
;
Molecular Sequence Data
;
Mutation
;
Nucleic Acid Hybridization
;
Prostatic Neoplasms/*genetics/pathology
;
RNA, Messenger/genetics
;
Retinoblastoma/*genetics
;
*Suppression, Genetic
;
Transfection
;
Tumor Cells, Cultured
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
