| Grant number: | 04/12133-6 |
| Support Opportunities: | Research Projects - Thematic Grants |
| Start date: | January 01, 2005 |
| End date: | December 31, 2010 |
| Field of knowledge: | Health Sciences - Medicine |
| Principal Investigator: | Suely Kazue Nagahashi Marie |
| Grantee: | Suely Kazue Nagahashi Marie |
| Host Institution: | Faculdade de Medicina (FM). Universidade de São Paulo (USP). São Paulo , SP, Brazil |
| City of the host institution: | São Paulo |
| Principal investigators | Carlos Gilberto Carlotti Jr ; Luiz Gonzaga Tone ; Paulo Andrade Lotufo |
| Associated scholarship(s): | 09/16805-2 - Quantitative and Immunohistochemical Evaluation of PDGF-C Expression in Gliomas, BP.IC |
Abstract
The main objective of the present project is to detect genes differentially expressed in central nervous system tumors to be useful as diagnostic markers, and as predictive factors of prognosis, in order to improve the therapeutical approaches, and to find future targets for gene therapy. As specific goals, this project was designed to pick up differentially expressed among astrocytomas of different grade of malignancy, medulloblastomas/PNET of child and adult, and oligodendrogliomas with and without LOH, by SAGE and microarray analysis. The gene expression will be validated by real time PCR, and its product will be analyzed on tissue samples by immunohistochemistry. Poli and/or monoclonal antibodies will be produced whenever it will not be available commercially. Functional studies will be carried out in vitro and in vivo in immunossupressed animal. The process of methylation of the promoter region will be analyzed on hypoexpressed genes with unknown function. The question of radio and chemoresistency will be addressed on animal models. Case-control study of polymorphisms will be performed using the samples of the DNA bank organized during the Clinical Genomics Project, over the last two years. The search of genes will the emphasized on the aspect of tumoral invisibility and angiogenesis, on which a common mechanism of extracellular matrix degradation is observed, allowing the infiltration of these tumors. Therefore, a complete resection is difficult, and it explains the inefficacy of the actual surgical, radio and chemotherapeutical approaches. It is relevant to search for clues on those pathways to improve the therapeutical results. (AU)
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