Expression data from PDGF-B induced murine gliomas transplanted in NOD/SCID mice

The different phases of tumor immunoediting in vivo were dissected thanks to a murine model of glioma induced by PDGF-B overexpression. We show that low-grade gliomas are highly immunostimulatory and that the adaptive immune system prevents the development of secondary tumor in syngeneic mice. During tumor progression, glioma cells downregulate immunostimulatory genes and the immune infiltrate becomes pro-tumorigenic. We showed that glioma cells are able to progress towards a high-grade phenotype even in immunodeficient mice, albeit more slowly and this progression invariably requires a downregulation of immunostimulatory genes. Cells derived from early onset / low grade murine gliomas induced with PDGF-B overexpression were serially transplanted in immunodeficient NOD/SCID mice where they can root. Upon the development of secondary and tertiary gliomas, tumor cells were explanted, dissociated and sorted by FACS, basing on the expression of the EGFP transgene expressed togheter with PDGF-B oncogene as a bicistronic transcript. EGFP-positive cells were then either processed for RNA estraction.