Longitudinal Bottom-Up Proteomics of Serum, Serum Extracellular Vesicles, and Cerebrospinal Fluid Reveals Candidate Biomarkers for Early Detection of Glioblastoma in a Murine Model

Posted: 2021-10-13 19:00:00
Glioblastoma Multiforme (GBM) is a brain tumor with a poor prognosis and low survival rates. GBM is diagnosed at an advanced stage, so little information is available on the early stage of the disease and few improvements have been made for earlier diagnosis. Longitudinal murine models are a promising platform for biomarker discovery as they allow access to the early stages of the disease. Nevertheless, their use in proteomics has been limited owing to the low sample amount that can be collected at each longitudinal time point. Here we used optimized microproteomics workflows to investigate longitudinal changes in the protein profile of serum, serum small extracellular vesicles (sEVs), and cerebrospinal fluid (CSF) in a GBM murine model. Baseline, pre-symptomatic, and symptomatic tumor stages were determined using non-invasive motor tests. Forty-four proteins displayed significant differences in signal intensities during GBM progression. Dysregulated proteins are involved in cell motility, cell growth, and angiogenesis. Most of the dysregulated proteins already exhibited a difference from baseline at the pre-symptomatic stage of the disease, suggesting that early effects of GBM might be detectable before symptom onset. Keywords: CSF; biomarkers; extracellular vesicles; glioblastoma; longitudinal; proteomics; serum.

参考サイト PubMed: exsome


10月 16, 2019 バイオアソシエイツ

南カリフォルニアのHOAG 病院は、癌の遺伝的リスクが高い人の癌検出と管理の早期疾患マーカーとしてエクソソームを研究。

カリフォルニア州オレンジ郡にある非営利の地域医療提供ネットワークのHoag Memorial Hospital Presbyterianは、癌診断、癌の進行、および治療抵抗性の初期疾患マーカーの可能性を特定および特徴付ける研究の開始を発表した。 Exosome Sciences社および、Aethlon Medical社の子会社との提携により、癌の遺伝的リスクが高い癌患者の エクソソーム 研究を開始する。…

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