Project description:Breast cancer is one of the most common cancers in women. Of the different subtypes of breast cancer, the triple negative breast cancer subtype of breast cancer is the most aggressive. A proteomic screen of nucleolar content across breast cancer subtypes found that triple negative breast cancer cell lines have a distinct nucleolar proteome signature in comparison to non-TNBC breast cancer cell lines.
Project description:About 15-20% of all breast cancers are triple negative breast cancers, which are often highly aggressive. We performed global quantitative phosphotyrosine profiling of a large panel of triple negative breast cancer cell lines using high resolution Fourier transform mass spectrometry. Our study identified 1,903 tyrosine-phosphorylated peptides derived from 969 proteins. Heterogeneous activation of tyrosine kinases was observed in triple negative breast cancer derived cell lines.
Project description:Experiments to test the effect of CtBP2 inhibition on metabolism of breast cell lines. In particular, experiment 1 involves comparison between a normal breast cell line (MCF102A) and a triple-negative breast cancer cell line (MDA-MB231). Experiment 2 is a study between MDA-MB231 silenced for CtBP2 by stable RNA interference (shCtBP2 cells) compared to scramble (shCTRL cells). Experiment 3 is a comparison between a normal breast cell line (MCF102A) and a triple-negative breast cancer cell line (MDA-MB231)in the presence of the absence of small-molecule CtBP inhibitors: HIPP (400 μM) or P4 (300 μM)for 48 hours.
Project description:We performed RNA sequencing analysis on fresh-frozen biopsies of metastatic triple-negative breast cancer prior to undergoing therapy with ruxolitinib, or after 2 cycles of therapy in a subset of patients.
Project description:The high-throughput sequencing technology was performed after the treatment of human triple negative breast cancer cells MDA-MB-231 with the active compound D16 designed and synthesized by ourselves, to explore the expression of genes related to cell proliferation, adhesion, migration and invasion of human triple negative breast cancer cells MDA-MB-231 after the treatment of the active compound Changes to explore the effect of active compounds on the proliferation and motility of triple breast breast cancer cells and to find an interesting target gene, CKAP2.
Project description:CDK4/6 inhibitor, Palbociclib, has shown a high success in breast cancer subtypes however it is often accompanied by a dependency on mutation status of cell lines. Consequently, there has been speculation on the breast cancer subtypes which should be offered treatment with specific CDK4/6 inhibitors and the response that can be expected. A common observation has been the induction of a cell programme known as "senescence" whereby cells experience a complete halt in mitosis, however, remaining metabolically active. Therapy-induced senescence markers and its effect on the tumour microenvironment as well as the diversity of this cell state remain unappreciated. In the following proteomics, phosphoproteomics and secretome datasets we focus on MDA-MB-231 cells, a triple negative cell line, to better understand the senescence-like cell state which arises after treatment. Ultimately, the dataset encompasses the population that arises upon Palbociclib treatment and highlights potential signatures and biomarkers of the cell state which could provide information on the use of CDK4/6 inhibitors in triple negative breast cancer subtypes.
Project description:In this study, we aimed to study the effect of Beta-2 Adrenergic Receptor stimulation on secreted proteins in triple negative breast cancer cell lines. We also wanted to compare protein expression in parental or bone tropic metastatic cell lines and how they respond to adrenergic signaling.
Project description:To investigate FOXC1 chromatin binding, and the effect of FOXC1 CRISPR knockout in triple negative breast cancer cell lines MDA-MB-231, MDA-MB-468, Hs578t, and Bt-549.
