Project description:Induction of apoptosis by the tumor suppressor p53 is known to protect from Myc-driven lymphomagenesis. The p53 family member p73 is also a pro-apoptotic protein, which is activated in response to oncogenes like Myc. We therefore investigated whether p73 provides a similar protection from Myc-driven lymphomas as p53. To generate B-cell lymphomas with defined genetic alterations in p53 or p73, we crossed the Eµ-Myc transgenic to mice heterozygous for germ-line deletions in p53 (p53+/) or p73 (p73+/-). Lymphomas which have spontaneously developed in Eµ-Myc transgenic animals with the genotypes p53+/+, p53+/-, p73+/+, p73+/- or p73-/- were isolated when the animals were moribund and further processed for gene expression profiling with 22.5K cDNA microarrays.
Project description:SH-EP cells were depleted for ZBTB4; Transfection of the cells were performed by oligofectamin RNAimax (Invitrogen) with siRNA smart pool (Dharmacon RNA Technologies); total RNA was isolated using RNAeasy Mini Kit (QIAGEN), preamplified, labeled with Cy3 and Cy5, respectively, and hybridized to cDNA-microarrays
Project description:21 Tissue samples of gastric MALT lymphoma were compared by cDNA microarray studies with chronic gastritis tissues from the same patient. From each patient, multiple mucosal biopsies of the stomach were taken both from i) the macroscopically infiltrated area and ii) distant from the lymphoma. For conventional histological examination, biopsies taken from the same areas were formalin fixed, embedded in paraffin and reviewed by a central pathologist. All lymphoma samples were tested by RT-PCR for t(11;18). None of them was t(11;18) positive.
Project description:We used gene expression profiling and pathway impact analyses to search signaling pathways, which mediate crosstalk between lymphoma cells and tumor-infiltrating inflammatory cells and contribute to the outcome of follicular lymphoma (FL) patients. 24 FL patients treated with rituximab and CHOP (cyclophosphamide, doxorubicin, vincristine, prednisone) chemotherapy were classified into groups of favorable or adverse outcomes, and the transcripts differentially expressed in the pretreatment FL tissues between the groups were analyzed.
Project description:Effect of stimulation with IL-1beta and p38 MAPK inhibition with SB203580 or Birb 796 on human articular osteoarthritic chondrocytes
Project description:Although non muscle-invasive bladder cancer can be treated successfully by surgical resection, there is a high rate of recurrence, which frequently develops into an invasive form of cancer. Due to the lack of marker molecules to predict recurrence, it is currently recommended that after resection each patient is screened via cystoscopy at least twice a year. This results in a psychic burden to the patient and substantial economic costs to the health care system. Using antibody microarrays targeting 724 different cancer-related proteins, we studied protein profiles of patients with and without recurrence. The analysis revealed 255 proteins of differential abundance. Most are involved in the regulation and execution of apoptosis and cell proliferation. For prognosis, a signature of 20 proteins was determined that predicts bladder cancer recurrence with 100% sensitivity and 80% specificity. As a measure of overall accuracy, the area under the curve (AUC) value was found to be 90%. This is well within a clinically relevant window of quality and should support decision making about the stringency of surveillance or even different treatment options.