Evidence map›Paper›PMID 31035355›Full record

ArticleProteomes2019

Proteome Profiling of Exosomes Purified from a Small Amount of Human Serum: The Problem of Co-Purified Serum Components.

Mateusz Smolarz, Monika Pietrowska, Natalia Matysiak, Łukasz Mielańczyk, Piotr Widłak

Open access · goldAbstract read
In one paragraph

Article in Proteomes, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed
5.7field-weighted citation impact, top 3% 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

64 citing papers in PubMed, 101 citations in OpenAlex.

  1. Trial
  2. Article
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  4. Review
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  7. Review
  8. Review
  9. Exosome enrichment from human serum using polyethylene glycol precipitation.Journal of analytical science and technology · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Measurement of α-synuclein as protein cargo in plasma extracellular vesicles.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. Review
  19. Article
  20. Review

4 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

5 authors at 2 institutions in 1 country.

Mateusz SmolarzMaria Skłodowska-Curie Institute-Oncology Center, Gliwice Branch, 44-101 Gliwice, Poland. mateusz.smolarz@io.gliwice.pl.
Monika PietrowskaMaria Skłodowska-Curie Institute-Oncology Center, Gliwice Branch, 44-101 Gliwice, Poland. monika.pietrowska@io.gliwice.pl.
Natalia MatysiakDepartment of Histology and Cell Pathology, School of Medicine with Division of Dentistry in Zabrze, Medical University of Silesia, 41-800 Zabrze, Poland. nmatysiak@sum.edu.pl.
Łukasz MielańczykDepartment of Histology and Cell Pathology, School of Medicine with Division of Dentistry in Zabrze, Medical University of Silesia, 41-800 Zabrze, Poland. lmielanczyk@sum.edu.pl.
Piotr WidłakMaria Skłodowska-Curie Institute-Oncology Center, Gliwice Branch, 44-101 Gliwice, Poland. piotr.widlak@io.gliwice.pl.ORCID 0000-0001-5099-4726
The Maria Sklodowska-Curie National Research Institute of Oncology · PLMedical University of Silesia · PL

Funding

Ministerstwo Nauki i Szkolnictwa Wyższego 6839/IA/SN/2018Narodowe Centrum Badań i Rozwoju PBS3/B3/32/2015Narodowe Centrum Nauki 2013/11/B/NZ7/01512Narodowe Centrum Nauki 2017/27/B/NZ7/01833
6 · The paper itself

Abstract

Untargeted proteomics analysis of extracellular vesicles (EVs) isolated from human serum or plasma remains a technical challenge due to the contamination of these vesicles with lipoproteins and other abundant serum components. Here we aimed to test a simple method of EV isolation from a small amount of human serum (<1 mL) using the size-exclusion chromatography (SEC) standalone for the discovery of vesicle-specific proteins by the untargeted LC-MS/MS shotgun approach. We selected the SEC fraction containing vesicles with the size of about 100 nm and enriched with exosome markers CD63 and CD81 (but not CD9 and TSG101) and analyzed it in a parallel to the subsequent SEC fraction enriched in the lipoprotein vesicles. In general, there were 267 proteins identified by LC-MS/MS in exosome-containing fraction (after exclusion of immunoglobulins), yet 94 of them might be considered as serum proteins. Hence, 173 exosome-related proteins were analyzed, including 92 proteins absent in lipoprotein-enriched fraction. In this set of exosome-related proteins, there were 45 species associated with the GO cellular compartment term "extracellular exosome". Moreover, there were 31 proteins associated with different immune-related functions in this set, which putatively reflected the major role of exosomes released by immune cells present in the blood. We concluded that identified set of proteins included a bona fide exosomes components, yet the coverage of exosome proteome was low due to co-purified high abundant serum proteins. Nevertheless, the approach proposed in current work outperformed other comparable protocols regarding untargeted identification of exosome proteins and could be recommended for pilot exploratory studies when a small amount of a serum/plasma specimen is available.

Indexed as

exosomemass spectrometryserum proteomesize-exclusion chromatography

Identifiers

PMID31035355
PMCPMC6630217
OpenAlexW2941711683

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.