Evidence mapPaperPMID 38938598Full record

ArticleJournal of extracellular biology2022

Isolation of native EVs from primary biofluids-Free-flow electrophoresis as a novel approach to purify ascites-derived EVs.

Christian Preußer, Kathrin Stelter, Tobias Tertel, Manuel Linder, Frederik Helmprobst, Witold Szymanski, Johannes Graumann, Bernd Giebel, Silke Reinartz, Rolf Müller and 2 more

Erratum issuedAbstract read
In one paragraph

Article in Journal of extracellular biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing 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

9 citing papers in PubMed.

  1. Article
  2. Review
  3. Review
  4. Review
  5. Review
  6. Review
  7. Review
  8. Article
  9. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors.

Christian PreußerInstitute for Tumor Immunology, Center for Tumor Biology and Immunology Philipps University Marburg Marburg Germany.ORCID https://orcid.org/0000-0002-5183-4262
Kathrin StelterInstitute for Tumor Immunology, Center for Tumor Biology and Immunology Philipps University Marburg Marburg Germany.
Tobias TertelInstitute for Transfusion Medicine University Hospital Essen University of Duisburg-Essen Essen Germany.
Manuel LinderInstitute for Tumor Immunology, Center for Tumor Biology and Immunology Philipps University Marburg Marburg Germany.
Frederik HelmprobstCore Facility for Mouse Pathology and Electron Microscopy, Institute of Neuropathology Philipps University Marburg Marburg Germany.
Witold SzymanskiInstitute of Translational Proteomics Philipps University of Marburg Marburg Germany.
Johannes GraumannInstitute of Translational Proteomics Philipps University of Marburg Marburg Germany.ORCID https://orcid.org/0000-0002-3015-5850
Bernd GiebelInstitute for Transfusion Medicine University Hospital Essen University of Duisburg-Essen Essen Germany.
Silke ReinartzTranslational Oncology Group, Center for Tumor Biology and Immunology Philipps University Marburg Marburg Germany.
Rolf MüllerTranslational Oncology Group, Center for Tumor Biology and Immunology Philipps University Marburg Marburg Germany.
Gerhard WeberFFE Service GmbH Feldkirchen Germany.
Elke Pogge von StrandmannInstitute for Tumor Immunology, Center for Tumor Biology and Immunology Philipps University Marburg Marburg Germany.ORCID https://orcid.org/0000-0003-4785-9165

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although extracellular vesicles (EVs) have been extensively characterized, efficient purification methods, especially from primary biofluids, remain challenging. Here we introduce free-flow electrophoresis (FFE) as a novel approach for purifying EVs from primary biofluids, in particular from the peritoneal fluid (ascites) of ovarian cancer patients. FFE represents a versatile, fast, matrix-free approach for separating different analytes with inherent differences in charge density and/or isoelectric point (pI). Using a series of buffered media with different pH values allowed us to collect 96 fractions of ascites samples. To characterize the composition of the individual fractions, we used state-of-the-art methods such as nanoflow and imaging flow cytometry (nFCM and iFCM) in addition to classical approaches. Of note, tetraspanin-positive events measured using nFCM were enriched in a small number of distinct fractions. This observation was corroborated by Western blot analysis and electron microscopy, demonstrating only minor contamination with soluble proteins and lipid particles. In addition, these gently purified EVs remain functional. Thus, FFE represents a new, efficient and fast method for separating native and highly purified EVs from complicated primary samples.

Indexed as

ascitesextracellular vesiclesfree‐flow electrophoresismicrovesicles

Identifiers

PMID38938598
PMCPMC11080702

What Socratic holds

Textmetadata
LicenceCC BY-NC-ND
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 Socratic graph.