6533b856fe1ef96bd12b1d7c
RESEARCH PRODUCT
Intratumoral Heterogeneity for hsp90β mRNA Levels in a Breast Cancer Cell Line
Ida Pucci-minafraClaudio LuparelloAgnès Noëlsubject
Steroid hormone receptorMice NudeEstrogen receptorBreast NeoplasmsBiologymedicine.disease_causeMiceBreast cancerIn vivoHeat shock proteinGene expressionTumor Cells CulturedGeneticsmedicineAnimalsHumansHSP90 Heat-Shock ProteinsRNA MessengerRNA NeoplasmMolecular BiologyDNA NeoplasmCell BiologyGeneral Medicinemedicine.diseaseMolecular biologyIn vitroGene Expression Regulation NeoplasticReceptors EstrogenReceptors ProgesteroneCarcinogenesisdescription
BC-3A and BC-61 are two breast cancer cell lines that have been cloned from parental 8701-BC cells and exhibit different biosynthetic, proliferative, and invasive properties in vitro. In the attempt to search whether alterations in the profiles of gene expression could be detected, we have submitted both cytotypes to identification of differentially expressed cDNAs. In addition, steroid hormone receptor mRNA arrays and in vivo tumorigenesis of the two lines have been checked. The technique used allowed identification of changes in the expression of the 90-kD heat shock protein-beta (hsp90beta) which is prominently down-regulated in BC-61 cells. Because we have also found that these cells, which lack estrogen receptor mRNA synthesis, display a more invasive behavior in vitro and increased tumorigenesis in vivo, we propose that evaluation of hsp903 transcript levels may be taken into consideration for screening as a novel molecular marker of breast cancer progression.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-10-01 | DNA and Cell Biology |