Loss of BPTF restores estrogen response and suppresses metastasis of mammary tumors. (PubMed, Nat Commun)
Here, we show that loss of BPTF (Bromodomain PHD Finger Transcription Factor), a core component of the NURF (Nucleosome Remodeling Factor) complex, results in the emergence of estrogen-responsive, tamoxifen-sensitive, Estrogen Receptor alpha (ERα) positive mammary tumors without altering cancer cell state and tumor pathology...Loss of ERα is sufficient to restore TGF-β activity and the metastatic potential in BPTFKO tumors. These findings highlight a mechanism through which BPTF regulates tumor development and progression in mammary epithelial cells, offering insights into the interplay between chromatin remodeling, estrogen signaling, and their resultant adjuvant therapeutic potential in breast cancer.