Evidence map›Paper›PMID 31311947›Full record

ArticleScientific reports2019

A Pilot Proof-Of-Principle Analysis Demonstrating Dielectrophoresis (DEP) as a Glioblastoma Biomarker Platform.

Jean Lewis, Ali A Alattar, Johnny Akers, Bob S Carter, Michael Heller, Clark C Chen

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.9field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 36 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Review
  5. Article
  6. Extracellular vesicles as tools and targets in therapy for diseases.Signal transduction and targeted therapy · 2024
    Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Liquid biopsy-from bench to bedside.Neuro-oncology advances · 2022
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Small extracellular vesicles in cancer.Bioactive materials · 2021
    Review
  17. Review
  18. Review
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Jean LewisDepartment of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
Ali A AlattarSchool of Medicine, University of California San Diego, La Jolla, CA, USA.
Johnny AkersDepartment of Neurosurgery, University of California San Diego, La Jolla, CA, USA.
Bob S CarterDepartment of Neurosurgery, Massachusetts General Hospital, Boston, MA, USA.
Michael HellerDepartment of Nanoengineering, University of California San Diego, La Jolla, CA, USA.
Clark C ChenDepartment of Neurosurgery, University of Minnesota, Minneapolis, MN, USA. ccchen@umn.edu.
University of California, San Diego · USMassachusetts General Hospital · USUniversity of Minnesota · US

Funding

Targeting Mechanisms of Acquired Temozolomide Resistance in GlioblastomaR01NS097649 · NINDS · UNIVERSITY OF MINNESOTA · PI CHEN, CLARK CHIN-CHUNG · 2016 to 2021
$1.7M
High-throughput single-cell sorting and kinetic analysis of secreted particlesR44GM128223 · NIGMS · NANOCELLECT BIOMEDICAL, INC. · PI CHEN, CLARK CHIN-CHUNG, LO, YU-HWA · 2017 to 2018
$1.6M
NIGMS NIH HHS R44 GM128223NINDS NIH HHS R01 NS097649
6 · The paper itself

Abstract

Extracellular vesicles (EVs) are small, membrane-bound particles released by all cells that have emerged as an attractive biomarker platform. We study the utility of a dielectrophoretic (DEP) micro-chip device for isolation and characterization of EVs derived from plasma specimens from patients with brain tumors. EVs were isolated by DEP chip and subjected to on-chip immunofluorescence (IF) staining to determine the concentration of glial fibrillary acidic protein (GFAP) and Tau. EVs were analyzed from the plasma samples isolated from independent patient cohorts. Glioblastoma cell lines secrete EVs enriched for GFAP and Tau. These EVs can be efficiently isolated using the DEP platform. Application of DEP to clinical plasma samples afforded discrimination of plasma derived from brain tumor patients relative to those derived from patients without history of brain cancer. Sixty-five percent (11/17) of brain tumor patients showed higher EV-GFAP than the maximum observed in controls. Ninety-four percent (16/17) of tumor patients showed higher EV-Tau than the maximum observed in controls. These discrimination thresholds were applied to plasma isolated from a second, independent cohort of 15 glioblastoma patients and 8 controls. For EV-GFAP, we observed 93% sensitivity, 38% specificity, 74% PPV, 75% NPV, and AUC of 0.65; for EV-Tau, we found 67% sensitivity, 75% specificity 83% PPV, 55% NPV, and AUC of 0.71 for glioblastoma diagnosis. This proof-of-principle study provides support for DEP-IF of plasma EVs for diagnosis of glioblastoma.

Indexed as

Biomarkers, TumorBlood Chemical AnalysisBrain NeoplasmsCase-Control StudiesCell Line, TumorElectrophoresis, MicrochipExtracellular VesiclesFluorescent Antibody TechniqueGene Expression Regulation, NeoplasticGlial Fibrillary Acidic ProteinGlioblastomaHumansPilot ProjectsProof of Concept StudyProtein Array AnalysisSensitivity and SpecificityBiomarkers, TumorGFAP protein, humanGlial Fibrillary Acidic ProteinMAPT protein, humantau Proteins

Identifiers

PMID31311947
PMCPMC6635369
OpenAlexW2956314891

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.