Project description:To investigate the molecular pathways underlying RNASET2-mediated tumor suppression in vivo, we investigated the gene expression profile of tumor samples obtained from control and RNASET2-silenced OVCAR3 xenografts, respectively. In order to evaluate the contribution of human cancer cells and the murine host stroma to RNASET2-mediated tumorigenesis responses, total RNA extracted from tumor xenografts derived from six independent OVCAR3 cell clones (three parental and three RNASET2-silenced clones) was fluorescently labeled and hybridized to human Agilent whole-genome microarrays. Control and RNASET2-silenced OVCAR3 were injected subcutaneously into nude mice. After 39 days mice were sacrified, tumors were extracted and total RNA purified.
Project description:To investigate the molecular pathways underlying RNASET2-mediated tumor suppression in vivo, we investigated the gene expression profile of tumor samples obtained from control and RNASET2-silenced OVCAR3 xenografts, respectively. In order to evaluate the contribution of human cancer cells and the murine host stroma to RNASET2-mediated tumorigenesis responses, total RNA extracted from tumor xenografts derived from six independent OVCAR3 cell clones (three parental and three RNASET2-silenced clones) was fluorescently labeled and hybridized to human Agilent whole-genome microarrays.
Project description:Ovarian cancer is the fifth most lethal malignancy in women, and epithelial ovarian cancer (EOC) is the most common histological type. Due to the absence of specific symptoms and diagnostic biomarkers, greater than 70% of EOC patients are diagnosed with clinical stage Federation International of Gynecology and Obstetrics (FIGO) III or IV, which has a five-year survival rate of only 20% to 30%. Thus, it is crucial to identify novel molecular biomarkers and therapeutic targets for EOC. NDC80 kinetochore complex component (NUF2) is upregulated and plays an important role in various human cancers. Our results showed that NUF2 was significantly upregulated in EOC tissues. Downregulation of NUF2 decreased cell proliferation, migration, invasion and tumor growth in nude mice. However, the mechanism of NUF2 in EOC remains unclear. The mechanisms by which NUF2 regulates EOC progression were detected by RNA sequencing. Thus, OVCAR3 cells after transfection with shNC (control) and shNUF2 (NUF2i) were added puromycin for establishing stable cell lines. RNA-seq was performed to analyze the differentially expressed genes in OVCAR3 cells after NUF2 knockdown.
Project description:To further development of the effects of miR-200a in ovarian cancer OVCAR3 cells,we have employed lncRNA and mRNA microarray as a discovery platform to identify lncRNA and mRNA expression in miR-200a overexpressing ovarian cancer cells. OVCAR3 cells were transfected with lentiviral vector with eGFP, encoding miR-200a and negative control vector (LV- miR-200a and LV-CON,) by using polybrene. The dysregulation of miR-200a was confirmed by using RT-PCR. RNA was extracted and detected by a lncRNA and mRNA microarray in LV-miR-200a and LV-CON OVCAR3 cells. The different expression of lncRNA and mRNA in LV-miR-200a and LV-CON OVCAR3 cells was analyzed to explore the mechanism that miR-200a affect ovarain cancer cells.
Project description:Transformed MSC were injected subcutaneously into the flank of athymic CD1 nude mice (C/River). Biopsies of 1.5 cm spindle cell tumours were taken.
Project description:We have used an IGR-N-91 parental cell line established from an involved bone marrow harvested from a high-risk NB (stage 4-NB, 8 year-old boy). These IGR-N-91 neuroblasts were injected subcutaneously into nude mice and a Primary Tumor Xenograft (PTX) was isolated whilst metastatic neuroblasts were isolated from Myocardium (MY) and Bone Marrow (BM). These malignant neuroblasts were further cultured in vitro on bovine corneal extra-cellular matrix to establish sublines (IGR/PTX, IGR/BM and IGR/MY). Agilent oligo microarray analysis was performed to compare gene expression profiles in BM and MY metastatic versus PTX neuroblasts. This analysis used eight microarrays (two replicates plus two dye-swap experiments for both MY and BM cell lines).