Evidence map›Paper›PMID 29109780›Full record

ArticleTheranostics2017

Metabolomic Profiling of Extracellular Vesicles and Alternative Normalization Methods Reveal Enriched Metabolites and Strategies to Study Prostate Cancer-Related Changes.

Maija Puhka, Maarit Takatalo, Maria-Elisa Nordberg, Sami Valkonen, Jatin Nandania, Maria Aatonen, Marjo Yliperttula, Saara Laitinen, Vidya Velagapudi, Tuomas Mirtti and 4 more

Open access · goldAbstract read
In one paragraph

Article in Theranostics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 134 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
134citing papers in PubMed, 4 pooled it
8.5field-weighted citation impact, top 2% 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

134 citing papers in PubMed, 4 syntheses or guidelines pooled it, 221 citations in OpenAlex.

  1. Pooled it
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  7. Article
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  12. Modern Analytical Techniques in Epilepsy Research.International journal of molecular sciences · 2026
    Review
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  14. Extracellular vesicles as modulators of cancer metabolism and microenvironment.Extracellular vesicles and circulating nucleic acids · 2026
    Review
  15. Article
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  19. Article
  20. Article

74 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

14 authors at 6 institutions in 2 countries.

Maija PuhkaInstitute for Molecular Medicine Finland FIMM, University of Helsinki, Finland.
Maarit TakataloEV group, Division of Biochemistry and Biotechnology, Department of Biosciences and Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Finland.
Maria-Elisa NordbergInstitute for Molecular Medicine Finland FIMM, University of Helsinki, Finland.
Sami ValkonenEV group, Division of Biochemistry and Biotechnology, Department of Biosciences and Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Finland.
Jatin NandaniaMetabolomics Unit, Institute for Molecular Medicine Finland FIMM, Helsinki, Finland.
Maria AatonenEV group, Division of Biochemistry and Biotechnology, Department of Biosciences and Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Finland.
Marjo YliperttulaDivision of Pharmaceutical Biosciences, Centre for Drug Research, Faculty of Pharmacy, University of Helsinki, Finland.
Saara LaitinenFinnish Red Cross Blood Service, Helsinki, Finland.
Vidya VelagapudiMetabolomics Unit, Institute for Molecular Medicine Finland FIMM, Helsinki, Finland.
Tuomas MirttiInstitute for Molecular Medicine Finland FIMM, University of Helsinki, Finland.
Olli KallioniemiInstitute for Molecular Medicine Finland FIMM, University of Helsinki, Finland.
Antti RannikkoInstitute for Molecular Medicine Finland FIMM, University of Helsinki, Finland.
Pia R-M SiljanderEV group, Division of Biochemistry and Biotechnology, Department of Biosciences and Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, Finland.
Taija Maria Af HällströmInstitute for Molecular Medicine Finland FIMM, University of Helsinki, Finland.
Institute for Molecular Medicine Finland · FIFinnish Red Cross · FIUniversity of Helsinki · FIHelsinki University Hospital · FIOrion Corporation (Finland) · FIScience for Life Laboratory · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Body fluids are a rich source of extracellular vesicles (EVs), which carry cargo derived from the secreting cells. So far, biomarkers for pathological conditions have been mainly searched from their protein, (mi)RNA, DNA and lipid cargo. Here, we explored the small molecule metabolites from urinary and platelet EVs relative to their matched source samples. As a proof-of-concept study of intra-EV metabolites, we compared alternative normalization methods to profile urinary EVs from prostate cancer patients before and after prostatectomy and from healthy controls.

methodsWe employed targeted ultra-performance liquid chromatography-tandem mass spectrometry to profile over 100 metabolites in the isolated EVs, original urine samples and platelets. We determined the enrichment of the metabolites in the EVs and analyzed their subcellular origin, pathways and relevant enzymes or transporters through data base searches. EV- and urine-derived factors and ratios between metabolites were tested for normalization of the metabolomics data.

resultsApproximately 1 x 10

conclusionsOur results suggest that metabolite analysis of EVs from different samples is feasible using a high-throughput platform and relatively small amount of sample material. With the knowledge about the specific enrichment of metabolites and normalization methods, EV metabolomics could be used to gain novel biomarker data not revealed by the analysis of the original EV source materials.

Indexed as

AdultChromatography, LiquidExtracellular VesiclesGlucuronic AcidHumansMaleMetabolomicsMicroscopy, ElectronProstatic NeoplasmsRibosemonophosphatesTandem Mass SpectrometryGlucuronic Acidribose-5-phosphateRibosemonophosphatesexosomesextracellular vesiclesmetabolomicsplateletsprostate cancerurine

Identifiers

PMID29109780
PMCPMC5667407
OpenAlexW2754914396

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.