Medicine and Health Sciences Commons^™

Celecoxib Decreases Prostaglandin E2 Concentrations In Nipple Aspirate Fluid From High Risk Postmenopausal Women And Women With Breast Cancer, Edward R. Sauter, Wenyi Quin, Lisa Schlatter, John E. Hewett, John T. Flynn

Department of Molecular Physiology and Biophysics Faculty Papers

Background

Celecoxib inhibits PGE2 production in cancerous tissue. We previously reported that PGE2 levels in nipple aspirate fluid (NAF) and plasma were not decreased in women at increased breast cancer risk who received celecoxib 200 mg twice daily (bid). The endpoints of the current study were to determine if a short course of celecoxib 400 mg bid would decrease PGE2 levels in women 1) at increased breast cancer risk, and 2) with established breast cancer.

Methods

NAF and plasma samples were collected before, 2 weeks after taking celecoxib 400 mg bid, and two weeks after washout from 26 women who …

Distinct P53 Acetylation Cassettes Differentially Influence Gene-Expression Patterns And Cell Fate., Chad D Knights, Jason Catania, Simone Di Giovanni, Selen Muratoglu, Ricardo Perez, Amber Swartzbeck, Andrew A Quong, Xiaojing Zhang, Terry Beerman, Richard Pestell, Maria Laura Avantaggiati

Kimmel Cancer Center Faculty Papers

The activity of the p53 gene product is regulated by a plethora of posttranslational modifications. An open question is whether such posttranslational changes act redundantly or dependently upon one another. We show that a functional interference between specific acetylated and phosphorylated residues of p53 influences cell fate. Acetylation of lysine 320 (K320) prevents phosphorylation of crucial serines in the NH(2)-terminal region of p53; only allows activation of genes containing high-affinity p53 binding sites, such as p21/WAF; and promotes cell survival after DNA damage. In contrast, acetylation of K373 leads to hyperphosphorylation of p53 NH(2)-terminal residues and enhances the interaction with …

Analysis Of Epstein-Barr Virus Reservoirs In Paired Blood And Breast Cancer Primary Biopsy Specimens By Real Time Pcr., R Serene Perkins, Katherine Sahm, Cindy Marando, Diana Dickson-Witmer, Gregory R Pahnke, Mark Mitchell, Nicholas J Petrelli, Irving M Berkowitz, Patricia Soteropoulos, Virginie M Aris, Stephen P Dunn, Leslie J Krueger

Department of Surgery Faculty Papers

INTRODUCTION: Epstein-Barr virus (EBV) is present in over 90% of the world's population. This infection is considered benign, even though in limited cases EBV is associated with infectious and neoplastic conditions. Over the past decade, the EBV association with breast cancer has been constantly debated. Adding to this clinical and biological uncertainty, different techniques gave contradictory results for the presence of EBV in breast carcinoma specimens. In this study, minor groove binding (MGB)-TaqMan real time PCR was used to detect the presence of EBV DNA in both peripheral blood and tumor samples of selected patients. METHODS: Peripheral blood and breast …

Classification And Risk Stratification Of Invasive Breast Carcinomas Using A Real-Time Quantitative Rt-Pcr Assay., Laurent Perreard, Cheng Fan, John F Quackenbush, Michael Mullins, Nicholas P Gauthier, Edward Nelson, Mary Mone, Heidi Hansen, Saundra S Buys, Karen Rasmussen, Alejandra Ruiz Orrico, Donna Dreher, Rhonda Walters, Joel Parker, Zhiyuan Hu, Xiaping He, Juan P Palazzo, Olufunmilayo I Olopade, Aniko Szabo, Charles M Perou, Philip S Bernard

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

INTRODUCTION: Predicting the clinical course of breast cancer is often difficult because it is a diverse disease comprised of many biological subtypes. Gene expression profiling by microarray analysis has identified breast cancer signatures that are important for prognosis and treatment. In the current article, we use microarray analysis and a real-time quantitative reverse-transcription (qRT)-PCR assay to risk-stratify breast cancers based on biological 'intrinsic' subtypes and proliferation. METHODS: Gene sets were selected from microarray data to assess proliferation and to classify breast cancers into four different molecular subtypes, designated Luminal, Normal-like, HER2+/ER-, and Basal-like. One-hundred and twenty-three breast samples (117 invasive …