Analysis of the expression of proteins involved in cell cycle control, apoptosis, angiogenesis, migration and invasion of C6 rat glioma cells in vitro and in vivo, after treatment with g-linolenic acid (GLA) and a novel diruthenium containing ibuprofen complex (Ru-Ibp).

Author(s)

Marcel Benadiba

• Document type: Doctoral Thesis
• Press: São Paulo.
• Institution: Universidade de São Paulo (USP). Instituto de Ciências Biomédicas (ICB/SDI)
• Defense date: 2008-11-12

Examining board members

Alison Colquhoun; Estera Finkelfarb; Patricia Gama; Marilia Cerqueira Leite Seelaender; Denise de Oliveira Silva

• Advisor: Alison Colquhoun

Abstract

Gliomas are intracranial tumors of cerebral origin characterized for its rapid growth and resistance to both conventional chemotherapy and radiotherapy. The search for new therapeutics agents with multiple mechanisms of action has identified <font face=\"symbol\">g-linolenic acid (GLA), nonsteroidal anti-inflammatory drugs (NSAIDs) and ruthenium containing compounds as possible candidates. The aim of this study was to better know the mechanism of action of these drugs on C6 rat glioma cells. Expression of proteins involved in control of the cell cycle, apoptosis, angiogenesis, invasion and migration was analyzed using RT-PCR and Western Blotting methods after treatment in vitro and in vivo. Alterations in cyclin D1, E2F-1, pRb, p27, p21, p16, p65, c-myc, ERK1/2, nm23 e <font face=\"symbol\">b, MMP-2, GPI and Secreted Brevican, Tenascin-R, Tenascin-C, VEGF-A, Flt1, Flk1, Bax, PPAR<font face=\"symbol\">g, p53, COX-2, EP1, 2, 3 and 4, Ku70 and 80 expression were observed. In conclusion, GLA and Ruthenium-Ibuprofen complex has multiple target wich translate into the inhibition of proliferation. (AU)