Evidence map›Paper›PMID 25756526›Full record

ArticleACS nano2015

Multivalent nanoparticle networks enable point-of-care detection of human phospholipase-A2 in serum.

Robert Chapman, Yiyang Lin, Mark Burnapp, Andrew Bentham, David Hillier, Abigail Zabron, Shahid Khan, Matthew Tyreman, Molly M Stevens

Open access · greenAbstract read
In one paragraph

Article in ACS nano, 2015. 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
9.4field-weighted citation impact, top 1% 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, 109 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Phospholipase A2 (PLABiomedicines · 2020
    Article
  10. Article
  11. Article
  12. Fluorescent Lipo-Beads for the Sensitive Detection of Phospholipase AACS biomaterials science & engineering · 2020
    Article
  13. Article
  14. Article
  15. Review
  16. Review
  17. Review
  18. Review
  19. Article
  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

9 authors at 3 institutions in 1 country.

Robert Chapman *Department of Materials, Department of Bioengineering and Institute for Biomedical Engineering, Imperial College London, London SW7 2AZ, UK.
Yiyang Lin *Department of Materials, Department of Bioengineering and Institute for Biomedical Engineering, Imperial College London, London SW7 2AZ, UK.
Mark BurnappMologic Ltd, Bedford Technology Park, Thurleigh, Bedfordshire, MK44 2YP, UK.
Andrew BenthamMologic Ltd, Bedford Technology Park, Thurleigh, Bedfordshire, MK44 2YP, UK.
David HillierHepatology and Gastroenterology Section, Faculty of Medicine, St Mary's Hospital Campus, Imperial College London, London, W2 1NY, UK.
Abigail ZabronHepatology and Gastroenterology Section, Faculty of Medicine, St Mary's Hospital Campus, Imperial College London, London, W2 1NY, UK.
Shahid KhanHepatology and Gastroenterology Section, Faculty of Medicine, St Mary's Hospital Campus, Imperial College London, London, W2 1NY, UK.
Matthew TyremanMologic Ltd, Bedford Technology Park, Thurleigh, Bedfordshire, MK44 2YP, UK.
Molly M StevensDepartment of Materials, Department of Bioengineering and Institute for Biomedical Engineering, Imperial College London, London SW7 2AZ, UK.
Imperial College London · GBMologic (United Kingdom) · GBSt Mary's Hospital · GB

Funding

European Research Council 309518
6 · The paper itself

Abstract

A rapid and highly sensitive point-of-care (PoC) lateral flow assay for phospholipase A2 (PLA2) is demonstrated in serum through the enzyme-triggered release of a new class of biotinylated multiarmed polymers from a liposome substrate. Signal from the enzyme activity is generated by the adhesion of polystreptavidin-coated gold nanoparticle networks to the lateral flow device, which leads to the appearance of a red test line due to the localized surface plasmon resonance effect of the gold. The use of a liposome as the enzyme substrate and multivalent linkers to link the nanoparticles leads to amplification of the signal, as the cleavage of a small amount of lipids is able to release a large amount of polymer linker and adhesion of an even larger amount of gold nanoparticles. By optimizing the molecular weight and multivalency of these biotinylated polymer linkers, the sensitivity of the device can be tuned to enable naked-eye detection of 1 nM human PLA2 in serum within 10 min. This high sensitivity enabled the correct diagnosis of pancreatitis in diseased clinical samples against a set of healthy controls using PLA2 activity in a point-of-care device for the first time.

Indexed as

Point-of-Care SystemsAcute DiseaseAnimalsBiotinBlood Chemical AnalysisElapidaeFemaleHumansLiposomesMaleModels, MolecularNanoparticlesNanotechnologyPancreatitisPhospholipases A2Polyethylene GlycolsBiotinLiposomesPhospholipases A2Polyethylene Glycolsbiosensorlateral flow devicemultivalent networkphospholipasepoint of care

Identifiers

PMID25756526
PMCPMC5407437
OpenAlexW2075316464

What OpenQuestion holds

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LicenceTDM
Read underepoch 390

Registered trials

None linked

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.