Evidence map›Paper›PMID 39399294›Full record

ArticleJournal of extracellular biology2024

Shining a light on fluorescent EV dyes: Evaluating efficacy, specificity and suitability by nano-flow cytometry.

Joseph Brealey, Rebecca Lees, Robert Tempest, Alice Law, Sonia Guarnerio, Rawan Maani, Soozana Puvanenthiran, Nick Peake, Ryan Pink, Ben Peacock

Abstract read
In one paragraph

Article in Journal of extracellular biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–field-weighted citation impact
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

18 citing papers in PubMed.

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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

10 authors.

Joseph BrealeyNanoFCM Co., Ltd. Nottingham UK.ORCID https://orcid.org/0000-0002-3013-9375
Rebecca LeesNanoFCM Co., Ltd. Nottingham UK.ORCID https://orcid.org/0000-0001-5682-2642
Robert TempestNanoFCM Co., Ltd. Nottingham UK.
Alice LawNanoFCM Co., Ltd. Nottingham UK.
Sonia GuarnerioSheffield Hallam University, Biomolecular Sciences Research Centre Sheffield UK.
Rawan MaaniSheffield Hallam University, Biomolecular Sciences Research Centre Sheffield UK.
Soozana PuvanenthiranFaculty of Health and Life Sciences Oxford Brookes University Oxford UK.
Nick PeakeSheffield Hallam University, Biomolecular Sciences Research Centre Sheffield UK.
Ryan PinkFaculty of Health and Life Sciences Oxford Brookes University Oxford UK.ORCID https://orcid.org/0000-0001-7501-558X
Ben PeacockNanoFCM Co., Ltd. Nottingham UK.ORCID https://orcid.org/0000-0002-7823-8719

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Extracellular vesicles (EVs) are mediators of intercellular communication, recently recognised for their clinical applications. Accurate characterisation and quantification of EVs are critical for understanding of their function and clinical relevance. Many platforms utilise fluorescence for EV characterisation, frequently labelling surface proteins to identify EVs. The heterogeneity of EVs and the lack of a universal protein marker encourages the use of generic EV labelling methods, including membrane labelling. Using nano-flow cytometry, we evaluated six membrane dyes, including MemGlow and CellMask. Evaluation criteria included EV labelling efficacy, non-specific labelling of very low-density lipoproteins (VLDLs), brightness and dye aggregation. Significant variation was observed in dye performance, with certain dyes showing poor EV labelling efficacy or high affinity to VLDLs. Importantly, several promising candidates were identified for further investigation. Overall, this study highlights the importance of selecting appropriate membrane dyes for EV staining tailored to the aims of the study and the EV origin. MemGlow and CellMask proved favourable, allowing bright, sensitive staining of EV membranes with minimal aggregation. However, MemGlow showed an affinity to VLDLs, and CellMask requires additional sample handling for optimal labelling. These results contribute to deepening our understanding of EV membrane dyes, allowing for better dye selection and EV identification in future studies.

Indexed as

brightnessextracellular vesicles (EVs)fluorescent labellingmembrane dyesnano‐flow cytometrysingle particle characterisationspecificity

Identifiers

PMID39399294
PMCPMC11465455

What OpenQuestion holds

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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.