Evidence map›Paper›PMID 32833989›Full record

ArticlePloS one2020

Characterization and internalization of small extracellular vesicles released by human primary macrophages derived from circulating monocytes.

Luis A Arteaga-Blanco, Andrés Mojoli, Robson Q Monteiro, Vanessa Sandim, Rubem F S Menna-Barreto, Filipe Santos Pereira-Dutra, Patrícia T Bozza, Rafael de Oliveira Resende, Dumith Chequer Bou-Habib

Abstract read
In one paragraph

Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing 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

21 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

9 authors.

Luis A Arteaga-BlancoLaboratory on Thymus Research, Oswaldo Cruz Institute/Fiocruz, Rio de Janeiro, Brazil.
Andrés MojoliLaboratory on Thymus Research, Oswaldo Cruz Institute/Fiocruz, Rio de Janeiro, Brazil.
Robson Q MonteiroInstitute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Vanessa SandimInstitute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Rubem F S Menna-BarretoLaboratory of Cellular Biology, Oswaldo Cruz Institute/Fiocruz, Rio de Janeiro, Brazil.
Filipe Santos Pereira-DutraLaboratory of Immunopharmacology, Oswaldo Cruz Institute/Fiocruz, Rio de Janeiro, Brazil.ORCID 0000-0003-1917-2876
Patrícia T BozzaLaboratory of Immunopharmacology, Oswaldo Cruz Institute/Fiocruz, Rio de Janeiro, Brazil.
Rafael de Oliveira ResendeLaboratory on Thymus Research, Oswaldo Cruz Institute/Fiocruz, Rio de Janeiro, Brazil.
Dumith Chequer Bou-HabibLaboratory on Thymus Research, Oswaldo Cruz Institute/Fiocruz, Rio de Janeiro, Brazil.ORCID 0000-0003-0552-9045

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Extracellular vesicles (EVs) are small membrane-limited structures derived from outward budding of the plasma membrane or endosomal system that participate in cellular communication processes through the transport of bioactive molecules to recipient cells. To date, there are no published methodological works showing step-by-step the isolation, characterization and internalization of small EVs secreted by human primary macrophages derived from circulating monocytes (MDM-derived sEVs). Thus, here we aimed to provide an alternative protocol based on differential ultracentrifugation (dUC) to describe small EVs (sEVs) from these cells. Monocyte-derived macrophages were cultured in EV-free medium during 24, 48 or 72 h and, then, EVs were isolated from culture supernatants by (dUC). Macrophages secreted a large amount of sEVs in the first 24 h, with size ranging from 40-150 nm, peaking at 105 nm, as evaluated by nanoparticle tracking analysis and scanning electron microscopy. The markers Alix, CD63 and CD81 were detected by immunoblotting in EV samples, and the co-localization of CD63 and CD81 after sucrose density gradient ultracentrifugation (S-DGUC) indicated the presence of sEVs from late endosomal origin. Confocal fluorescence revealed that the sEVs were internalized by primary macrophages after three hours of co-culture. The methodology here applied aims to contribute for enhancing reproducibility between the limited number of available protocols for the isolation and characterization of MDM-derived sEVs, thus providing basic knowledge in the area of EV methods that can be useful for those investigators working with sEVs released by human primary macrophages derived from circulating monocytes.

Indexed as

Cell CommunicationBlood Buffy CoatCell DifferentiationCell FractionationCentrifugation, Density GradientCoculture TechniquesExtracellular VesiclesHealthy VolunteersHumansIntravital MicroscopyMacrophagesMicroscopy, ConfocalMicroscopy, Electron, ScanningMicroscopy, FluorescenceMonocytesPrimary Cell Culture

Identifiers

PMID32833989
PMCPMC7444811

What Socratic holds

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LicenceCC BY
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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 Socratic graph.