{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T22:30:20Z","timestamp":1792794620637,"version":"4.5.0"},"reference-count":46,"publisher":"Oxford University Press (OUP)","issue":"8","license":[{"start":{"date-parts":[[2019,5,11]],"date-time":"2019-05-11T00:00:00Z","timestamp":1557532800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"funder":[{"name":"Ontario Institute for Cancer Research Ontario Molecular Pathology Research Network","id":[{"id":"https:\/\/ror.org\/043q8yx54","id-type":"ROR","asserted-by":"crossref"}]},{"name":"Princess Margaret Cancer Centre"},{"name":"University Health Network Department of Pathology","id":[{"id":"https:\/\/ror.org\/042xt5161","id-type":"ROR","asserted-by":"crossref"}]},{"name":"Richard Motyka Brain Tumour Research fellowship of the Brain Tumour Foundation of Canada","id":[{"id":"https:\/\/ror.org\/04w23ys68","id-type":"ROR","asserted-by":"crossref"}]},{"name":"Canadian Institutes of Health Research Cancer Graduate Scholarships\u2013Masters","id":[{"id":"https:\/\/ror.org\/01gavpb45","id-type":"ROR","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,8,5]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Meningiomas represent one of the most common brain tumors and exhibit a clinically heterogeneous behavior, sometimes difficult to predict with classic histopathologic features. While emerging molecular profiling efforts have linked specific genomic drivers to distinct clinical patterns, the proteomic landscape of meningiomas remains largely unexplored.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We utilize liquid chromatography tandem mass spectrometry with an Orbitrap mass analyzer to quantify global protein abundances of a clinically well-annotated formalin-fixed paraffin embedded (FFPE) cohort (n = 61) of meningiomas spanning all World Health Organization (WHO) grades and various degrees of clinical aggressiveness.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>In total, we quantify 3042 unique proteins comparing patterns across different clinical parameters. Unsupervised clustering analysis highlighted distinct proteomic (n = 106 proteins, Welch\u2019s t-test, P &lt; 0.01) and pathway-level (eg, Notch and PI3K\/AKT\/mTOR) differences between convexity and skull base meningiomas. Supervised comparative analyses of different pathological grades revealed distinct patterns between benign (grade I) and atypical\/malignant (grades II\u2012III) meningiomas with specific oncogenes enriched in higher grade lesions. Independent of WHO grade, clinically aggressive meningiomas that rapidly recurred (&lt;3 y) had distinctive protein patterns converging on mRNA processing and impaired activation of the matrisome complex. Larger sized meningiomas (&gt;3 cm maximum tumor diameter) and those with previous radiation exposure revealed perturbed pro-proliferative (eg, epidermal growth factor receptor) and metabolic as well as inflammatory response pathways (mitochondrial activity, interferon), respectively.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Our proteomic study demonstrates that meningiomas of different grades and clinical parameters present distinct proteomic profiles. These proteomic variations offer potential future utility in helping better predict patient outcome and in nominating novel therapeutic targets for personalized care.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/neuonc\/noz084","type":"journal-article","created":{"date-parts":[[2019,5,10]],"date-time":"2019-05-10T15:21:57Z","timestamp":1557501717000},"page":"1028-1038","source":"Crossref","is-referenced-by-count":33,"title":["Proteomic analysis of meningiomas reveals clinically distinct molecular patterns"],"prefix":"10.1093","volume":"21","author":[{"given":"Michail-Dimitrios","family":"Papaioannou","sequence":"first","affiliation":[{"name":"Princess Margaret Cancer Centre, MacFeeters Hamilton Centre for Neuro-Oncology Research, Toronto, Ontario, Canada"},{"name":"Laboratory Medicine Program, University Health Network, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ugljesa","family":"Djuric","sequence":"additional","affiliation":[{"name":"Princess Margaret Cancer Centre, MacFeeters Hamilton Centre for Neuro-Oncology Research, Toronto, Ontario, Canada"},{"name":"Laboratory Medicine Program, University Health Network, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jennifer","family":"Kao","sequence":"additional","affiliation":[{"name":"Princess Margaret Cancer Centre, MacFeeters Hamilton Centre for Neuro-Oncology Research, Toronto, Ontario, Canada"},{"name":"Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shirin","family":"Karimi","sequence":"additional","affiliation":[{"name":"Princess Margaret Cancer Centre, MacFeeters Hamilton Centre for Neuro-Oncology Research, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gelareh","family":"Zadeh","sequence":"additional","affiliation":[{"name":"Princess Margaret Cancer Centre, MacFeeters Hamilton Centre for Neuro-Oncology Research, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kenneth","family":"Aldape","sequence":"additional","affiliation":[{"name":"Princess Margaret Cancer Centre, MacFeeters Hamilton Centre for Neuro-Oncology Research, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Phedias","family":"Diamandis","sequence":"additional","affiliation":[{"name":"Princess Margaret Cancer Centre, MacFeeters Hamilton Centre for Neuro-Oncology Research, Toronto, Ontario, Canada"},{"name":"Laboratory Medicine Program, University Health Network, Toronto, Ontario, Canada"},{"name":"Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2019,5,11]]},"reference":[{"issue":"3","key":"2019080513544882000_CIT0001","doi-asserted-by":"crossref","first-page":"307","DOI":"10.1007\/s11060-010-0386-3","article-title":"Epidemiology and etiology of meningioma","volume":"99","author":"Wiemels","year":"2010","journal-title":"J Neurooncol."},{"key":"2019080513544882000_CIT0002","unstructured":"Backer-Gr\u00f8ndahl\n              T\n            , MoenBH, TorpSH. The histopathological spectrum of human meningiomas. Int J Clin Exp Pathol.2012;5(3):231\u2013242. http:\/\/www.ncbi.nlm.nih.gov\/pubmed\/22558478. 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