Project description:In this study, we screened a cohort of 57 paediatric brain tumours, with a wide range of pathologies to identify microRNA profiles We analysed the microRNA profiles in paediatric brain tumours as compared to normal adult brain. Our cohort included 14 pilocytic astrocytomas, 3 diffuse astrocytomas, 2 anaplastic astrocytomas, 5 glioblastomas, 14 ependymomas, 9 medulloblastomas, 5 atypical teratoid/rhabdoid tumours, 4 choroid plexus papillomas, 1 papillary glioneuronal, and 7 adult brain controls.
Project description:Embryonal tumours with multilayered rosettes (ETMRs) are aggressive paediatric brain tumours driven in most cases by amplification of the chromosome 19 microRNA cluster (C19MC), which upregulates the oncogene MYCN. Whether MYCN dysregulation alone is sufficient to produce ETMR-like tumours, independent of the broader C19MC machinery, has not been tested. Here, we show that sustained MYCN expression in human neuroepithelial stem (NES) cells, i.e. primitive neural progenitors resembling the proposed cell of origin of ETMR, is sufficient to generate ETMR-like brain tumours in vivo. NanoString nCounter miRNA profiling was used to assess microRNA expression in this MYCN-only model, which lacks C19MC amplification.
Project description:In this study, we screened a cohort of 57 paediatric brain tumours, with a wide range of pathologies to identify gene expression profiles We analysed gene expression in paediatric brain tumours as compared to normal adult brain in order to understand the molecular profiles. Our cohort included 15 pilocytic astrocytomas, 3 diffuse astrocytomas, 2 anaplastic astrocytomas, 5 glioblastomas, 14 ependymomas, 9 medulloblastomas, 5 atypical teratoid/rhabdoid tumours, 4 choroid plexus papillomas, 8 adult brain and 8 foetal brain controls.
Project description:In this study, we screened a cohort of 57 paediatric brain tumours, with a wide range of pathologies to identify gene expression profiles
