Aberrant DNA methylation at the RB1 gene has been reported in sporadic retinoblastoma as well as other cancers including glioblastoma, hepatocellular carcinoma, and breast cancer.
In conclusion, we show that HMW-FGF2 isoforms are PRB targets which confer endocrine resistance and are localized in the nuclei of breast cancer samples.
To directly investigate the effects of PR isoform expression on the breast cancer proteome, both in the presence and absence of progestin, PRA and PRB were independently stably expressed in T47DC42 PR-null breast cancer cells using a doxycycline (Dox)-regulated promoter.