A Cell-Surface Membrane Protein Signature for Glioblastoma.
Cell Syst
; 4(5): 516-529.e7, 2017 05 24.
Article
in En
| MEDLINE
| ID: mdl-28365151
ABSTRACT
We present a systems strategy that facilitated the development of a molecular signature for glioblastoma (GBM), composed of 33 cell-surface transmembrane proteins. This molecular signature, GBMSig, was developed through the integration of cell-surface proteomics and transcriptomics from patient tumors in the REMBRANDT (n = 228) and TCGA datasets (n = 547) and can separate GBM patients from control individuals with a Matthew's correlation coefficient value of 0.87 in a lock-down test. Functionally, 17/33 GBMSig proteins are associated with transforming growth factor ß signaling pathways, including CD47, SLC16A1, HMOX1, and MRC2. Knockdown of these genes impaired GBM invasion, reflecting their role in disease-perturbed changes in GBM. ELISA assays for a subset of GBMSig (CD44, VCAM1, HMOX1, and BIGH3) on 84 plasma specimens from multiple clinical sites revealed a high degree of separation of GBM patients from healthy control individuals (area under the curve is 0.98 in receiver operating characteristic). In addition, a classifier based on these four proteins differentiated the blood of pre- and post-tumor resections, demonstrating potential clinical value as biomarkers.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Glioblastoma
/
Gene Expression Profiling
/
Membrane Proteins
Type of study:
Prognostic_studies
Limits:
Humans
Language:
En
Journal:
Cell Syst
Year:
2017
Document type:
Article
Affiliation country:
Estados Unidos