Project description:This SuperSeries is composed of the following subset Series: GSE25297: Genome-wide gene expression comparison (primary central nervous system lymphoma (PCNSL) vs normal lymph node) GSE25298: Genomic aberrations in primary central nervous system lymphoma (PCNSL) Refer to individual Series
Project description:A genome-wide gene expression comparison between primary central nervous system lymphoma (PCNSL) and normal lymph node was performed to identify a differential exprssion and specific pathway. Experiment design: 7 PCNSL and 7 normal lymph node tissues were used for comparison.
Project description:Primary central nervous system lymphoma(PCNSL) is a rare extra-nodal non-Hodgkin’s lymphoma and accounts for 3%-4% of central nervous system tumors. Recent studies have highlighted the importance of cerebrospinal fluid derived extracellular vesicles in PCNSL. Extracellular vesicles(EVs) are nanoscale vesicles with bilayer lipid membrane released by almost all cell types. EVs are present in body fluids, including urine, blood and CSF. Cerebrospinal fluid(CSF) is a colorless fluid that surrounds the brain and spinal cord and acts as lymph in the central nervous system. CSF-derived EVs contain proteins from neurons, oligodendrocytes, astrocytes and microglias. Studies of CSF EVs are mainly limited by the amount of EVs isolated from per milliliter of CSF and the volume of CSF acquired from one patient. Here, we provide a label-free quantitative phospho-proteome profiling of EVs separated from PCNSL and non-PCNSL CSF samples by an earlier introduced functional magnetic beads called EVTRAP together with highly sensitive timsTOF Pro.
Project description:A genome-wide gene expression comparison between primary central nervous system lymphoma (PCNSL) and normal lymph node was performed to identify a differential exprssion and specific pathway.
Project description:Primary central nervous system (CNS) lymphoma (PCNSL) is a diffuse large B cell lymphoma (DLBCL) confined to the CNS. A genome-wide gene expression comparison between PCNSL and non-CNS DLBCL was performed, the latter consisting of both nodal and extranodal DLBCL (nDLBCL and enDLBCL), to identify a “CNS signature.” Keywords: disease state analysis
Project description:Primary lymphoma of the central nervous system (PCNSL) is a diffuse large B cell lymphoma confined to the CNS. In order to elucidate its peculiar organ tropism, we generated recombinant antibodies (recAb) identical with the BCR of a series of 23 PCNSL from immunocompetent patients. While none of the recAb showed self-reactivity upon testing with common autoantigens, they recognized 1547 proteins present on a large-scale protein microarray. Interestingly, proteins recognized by the recAb are physiologically expressed by CNS neurons (GRINL1A, centaurin-α, BAIAP2). Furthermore, 87% (20/23) of the recAb including all antibodies derived from IGHV4 34 using PCNSL recognized galectin-3, which was upregulated on microglia/macrophages, astrocytes, and cerebral endothelial cells upon CNS invasion by PCNSL. Thus, PCNSL Ig may recognize CNS proteins as self-antigens. Their interaction may contribute to BCR signaling with sustained NF-κB activation and, ultimately, may foster tumor cell proliferation and survival. These data may also explain, at least in part, the affinity of the tumor cells of PCNSL to the CNS. Recombinant antibodies (recAb) identical with the BCR of a series of 23 PCNSL from immunocompetent patients.
