Project description:We examined differential gene expression profiles between MCF7 human breast cancer cells treated with vehicle alone (control), palbociclib monotherapy, palbociclib alternating with ICI182,780 treatment, and palbociclib resistant cells. For this, we used gene microarray expression profiling to identify significantly changed genes under different treatment conditions.
Project description:Analysis miRNA profiling of breast cancer cells treated without or with palbociclib.Results provide insight into the molecular mechanisms involved in resistance to pabbociclib.
Project description:T47D and MCF7 cell lines were treated with long-term (continuous) palbociclib to induce 4 resistant cell-lines (T47D RB-, T47D CDK6H, MCF7 RB- and MCF7 PacqR). Each cell line (both parental and resistant) were then treated with DMSO (control), capivasertib monotherapy, fulvestrant monotherapy and capivasertib/fulvestrant combination. RNA data is available after each treatment and resistant cell lines additionally have RNA data available after continuous palbociclib treatment.
Project description:Metastatic HR+ HER2- breast cancer is an intractable disease that resists to the first-line treatment based on the combination of CDK4/6 inhibitor and hormone therapy (HT). To identify targets that further increase palbociclib-HT efficacy, we utilized biopsies from cancer patients who showed recurrence after treatment, HR+HER2- luminal cancer cells sensitive and resistant to the palbociclib-HT. Proteomic analysis of human samples revealed an upregulation of the oxidative stress-triggered proteasome subunit alpha7 (PSMA7) in metastatic relapses in different organs after patient's resistance to palbociclib-HT combination.