Homo Raw sequence reads. Homo

There is an urge need to illustrate the molecular basis of tumorigenesis and to identify therapeutic targets in malignant brain tumor glioma. To address this challenge, we performed an integrated proteomic and genomic analysis of 243 prospective collected glioma tumors, comprising 75 low grade gliomas (WHO grade II and III), 168 glioblastomas (WHO grade IV), 56 paired tumor adjacent tissues, and 12 normal brain tissues. We performed region resolved proteome to profile the 12 normal brain tissues. Analysis of differential protein expression and protein co-expression relationships revels the distinctive protein regulation network in the five common studied brain regions. Further comparing analysis among normal brain tissues, tumor adjacent tissues, and tumor tissues precisely showed the alternation of key signaling pathways including EGFR-MAPK according with glioma tumorigenesis. Kinome analysis also indicated MAPK family were elevated in tumor tissues, accordingly. Moreover, proteomic profiling identified three subgroups which exhibited dramatic diversity in molecular signatures and patient survival. Our proteomic subgroup classification revealed a strong association between genetic alternation, protein signaling pathway and clinical outcomes. Additionally, ERK5 was identified and validated as potential prognostic biomarkers. Our proteomic study provides a plausible resource that significantly expands our understanding of glioma, and may benefit the clinical practice in the end.