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Breast Cancer Basic Science Program
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Lucio Miele, MD, PhD
Dr. Miele's primary area of interest is molecular pharmacology and the discovery and
development of new anti-cancer agents for breast cancer. His group focuses on:
Kimberly Foreman, PhD Department of Pathology Research in my laboratory is focused on the expression of Notch and Notch-related proteins in human malignancies, particularly breast cancer. The major goal of our research is to understand the role of Notch in tumorigenesis, and to determine if Notch is a potential therapeutic target for cancer treatment. Currently, there are two projects in the laboratory: (1) Notch signaling and angiogenesis. Our laboratory has a long standing interest in endothelial cell biology, and recent studies indicate tumor cells can engage Notch receptors on endothelial cells resulting in neovascularization. We are investigating the role of Notch signaling in angiogenesis with a focus on advanced and metastatic breast cancer. (2) Notch signaling and tumor initiating cells (TIC or cancer stem cells). Evidence has recently pointed to breast TIC as an important source of recurrent and metastatic disease as they evade death from standard chemotherapies based on their stem cell-like properties. Notch signaling is an important regulator of mammary gland development where Notch functions as a regulator of stem cell self-renewal and differentiation. Therefore, we are investigating Notch as a critical regulator of TIC survival and self-renewal. Foreman representative publications
Clodia Osipo, PhD Dr. Osipo's research will focus on: 1.)
Elucidating the role of the IGF-1 signaling pathway in breast tumors
that do and not respond to trastuzumab (Herceptin®).
Osipo
representative publications Paola Rizzo, PhD Dr. Rizzo works together with Dr. L. Miele investigating the relationship between the Notch signaling and the estrogen receptor (ER) pathways in breast cancer. We have shown that Notch 1 and Notch 4 are consistently up-regulated in breast cancer and that interfering with the Notch pathway makes tumor cells more susceptible cytotoxic agents. We also observed that the treatment of human breast cancer cell lines with β- estradiol induces Notch 1 accumulation and at the same time inhibition of Notch 1 transcriptional activity. Treatment of the same cells with commonly used SERMs (tamoxifen, raloxifene) does not inhibit Notch 1 transcriptional activity. Based on these data we are currently investigating: 1) The molecular details of the Notch 1-estrogen receptor (ER) interaction in breast cancer. These studies include the characterization of the mechanism whereby ER interferes with Notch-mediated transcriptional activation in the nucleus of cells through the analysis of proteins recruited on the Notch 1 responsive promoters in presence of β- estradiol. 2) Potential new therapeutic strategies that should enhance the killing of breast cancer cells through the combined use of SERMs to block the estrogen receptor and of molecules that will interfere with Notch 1 activity. |
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