Evidence map›Paper›PMID 34079007›Full record

ArticleScientific reports2021

Potential and challenges of specifically isolating extracellular vesicles from heterogeneous populations.

Susann Allelein, Paula Medina-Perez, Ana Leonor Heitor Lopes, Sabrina Rau, Gerd Hause, Andreas Kölsch, Dirk Kuhlmeier

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 1 pooled it
4.9field-weighted citation impact, top 4% 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

62 citing papers in PubMed, 1 synthesis or guideline pooled it, 95 citations in OpenAlex.

  1. Pooled it
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  10. Extracellular Vesicles in Tauopathies: Mechanisms and Applications.International journal of molecular sciences · 2026
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2 more citing papers are in PubMed but not listed here.

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

7 authors at 2 institutions in 1 country.

Susann AlleleinFraunhofer Institute for Cell Therapy and Immunology IZI, Leipzig, Germany. susann.allelein@izi.fraunhofer.de.
Paula Medina-PerezFraunhofer Institute for Cell Therapy and Immunology IZI, Leipzig, Germany.
Ana Leonor Heitor LopesFraunhofer Institute for Cell Therapy and Immunology IZI, Leipzig, Germany.
Sabrina RauFraunhofer Institute for Cell Therapy and Immunology IZI, Leipzig, Germany.
Gerd HauseMartin Luther University Halle-Wittenberg, Biocenter, Halle (Saale), Germany.
Andreas KölschFraunhofer Institute for Cell Therapy and Immunology IZI, Leipzig, Germany.
Dirk KuhlmeierFraunhofer Institute for Cell Therapy and Immunology IZI, Leipzig, Germany.
Fraunhofer Institute for Cell Therapy and Immunology · DEMartin Luther University Halle-Wittenberg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Extracellular vesicles (EVs) have attracted interest due to their ability to provide diagnostic information from liquid biopsies. Cells constantly release vesicles divers in size, content and features depending on the biogenesis, origin and function. This heterogeneity adds a layer of complexity when attempting to isolate and characterize EVs resulting in various protocols. Their high abundance in all bodily fluids and their stable source of origin dependent biomarkers make EVs a powerful tool in biomarker discovery and diagnostics. However, applications are limited by the quality of samples definition. Here, we compared frequently used isolation techniques: ultracentrifugation, density gradient centrifugation, ultrafiltration and size exclusion chromatography. Then, we aimed for a tissue-specific isolation of prostate-derived EVs from cell culture supernatants with immunomagnetic beads. Quality and quantity of EVs were confirmed by nanoparticle tracking analysis, western blot and electron microscopy. Additionally, a spotted antibody microarray was developed to characterize EV sub-populations. Current analysis of 16 samples on one microarray for 6 different EV surface markers in triplicate could be easily extended allowing a faster and more economical method to characterize samples.

Indexed as

Antigens, SurfaceBiomarkersCell Line, TumorChromatography, GelExtracellular VesiclesGlutamate Carboxypeptidase IIHumansImmunomagnetic SeparationMaleProof of Concept StudyProstatic NeoplasmsUltracentrifugationUltrafiltrationAntigens, SurfaceBiomarkersFOLH1 protein, humanGlutamate Carboxypeptidase II

Identifiers

PMID34079007
PMCPMC8172572
OpenAlexW3165569042

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.