against apoptosis in malignant peripheral nerve sheath tumor
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against apoptosis in malignant peripheral nerve sheath tumor
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INTERNATIONAL JOURNAL OF ONCOLOGY 37: 927-934, 2010
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Protective effect of the dopamine D3 receptor agonist (7-OH-PIPAT) against apoptosis in malignant peripheral nerve sheath tumor (MPNST) cells A. CASTORINA1, S. GIUNTA1,2 and V. D'AGATA1,2 1
Department of Anatomy, Diagnostic Pathology, Legal Medicine, Hygiene and Public Health; 2International Neuropharmacology PhD program, University of Catania, Catania, Italy Received May 28, 2010; Accepted July 5, 2010 DOI: 10.3892/ijo_00000743
Abstract. Emerging evidence indicates that the dopamine D3 receptor (D3R) mediates protective roles both in neuronal and non-neuronal cell lines. In a previous study we proposed that neurofibromin, a large tumor suppressor protein encoded by the neurofibromatosis type 1 gene (NF1), may increase susceptibility to apoptosis after serum deprivation in malignant peripheral nerve sheath tumor (MPNST) cells, thus acting as a proapoptotic gene. In addition, it has been observed that D3Rs are functionally correlated to neurofibromin. In this study, we examined whether 7-OH-PIPAT, a potent dopamine D3R agonist, exerts an antiapoptotic role under the same culture conditions and then correlated this effect to changes in NF1 expression. Results showed that serum deprivation caused a significant reduction of cell viability (MTT assay) both after 24 and 48 h (p
