The dynamic impact of location and resection on the glioma CSF proteome
Riviere-cazaux, C.; Graser, C. J.; Warrington, A. E.; Hoplin, M. D.; Andersen, K. M.; Malik, N.; Palmer, E. A.; Carlstrom, L. P.; Dasari, S.; Munoz-Casabella, A.; Ghadimi, K.; Himes, B. T.; Jusue-Torres, I.; Sarkaria, J. N.; Meyer, F. B.; Van Gompel, J.; Kizilbash, S. H.; Sener, U.; Michor, F.; Campian, J. L.; Parney, I. F.; Burns, T.
Show abstract
While serial sampling of glioma tissue is rarely performed prior to recurrence, cerebrospinal fluid (CSF) is an underutilized longitudinal source of candidate glioma biomarkers for understanding therapeutic impacts. However, the impact of key variables to consider in longitudinal CSF samples, including anatomical location and post-surgical changes, remains unknown. To that end, pre- versus post-resection intracranial CSF samples were obtained at early (1-16 days; n=20) or delayed (86-153 days; n=11) timepoints for patients with glioma. Paired lumbar-versus-intracranial glioma CSF samples were also obtained (n=14). Using aptamer-based proteomics, we identify significant differences in the CSF proteome between lumbar, subarachnoid, and ventricular CSF. Our analysis of serial intracranial CSF samples suggests the early potential for disease monitoring and evaluation of pharmacodynamic impact of targeted therapies. Importantly, we found that resection had a significant, evolving longitudinal impact on the CSF proteome. Proteomic data are provided with individual clinical annotations as a resource for the field. One Sentence SummaryGlioma cerebrospinal fluid (CSF) accessed intra-operatively and longitudinally via devices can reveal impacts of treatment and anatomical location.
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