Evidence map›Paper›PMID 28326168›Full record

ReviewJournal of extracellular vesicles2017

Ribonucleic artefacts: are some extracellular RNA discoveries driven by cell culture medium components?

Juan Pablo Tosar, Alfonso Cayota, Erez Eitan, Marc K Halushka, Kenneth W Witwer

Abstract readReview
In one paragraph

Review in Journal of extracellular vesicles, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing 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

47 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Exomeres and Supermeres: monolithic or diverse?Journal of extracellular biology · 2022
    Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Clinical applications for exosomes: Are we there yet?British journal of pharmacology · 2021
    Review
  17. Review
  18. Article
  19. Toward an Understanding of Extracellular tRNA Biology.Frontiers in molecular biosciences · 2021
    Article
  20. Article
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.

Juan Pablo TosarFunctional Genomics Unit, Institut Pasteur de Montevideo, Montevideo, Uruguay; Nuclear Research Center, Faculty of Science, Universidad de la República, Montevideo, Uruguay.
Alfonso CayotaFunctional Genomics Unit, Institut Pasteur de Montevideo, Montevideo, Uruguay; Department of Medicine, Faculty of Medicine, Universidad de la República, Montevideo, Uruguay.
Erez EitanLaboratory of Neurosciences, National Institute on Aging, National Institutes of Health , Baltimore , MD , USA.
Marc K HalushkaDepartment of Pathology, The Johns Hopkins University School of Medicine , Baltimore , MD , USA.
Kenneth W WitwerDepartment of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.

Funding

Extracellular Vesicle-Mediated Immunomodulation in HIV Infection and Nicotine AbuseR01DA040385 · NIDA · JOHNS HOPKINS UNIVERSITY · PI WITWER, KENNETH W · 2015 to 2019
$2.3M
NIDA NIH HHS R01 DA040385
6 · The paper itself

Abstract

In a recently published study, Anna Krichevsky and colleagues raise the important question of whether results of in vitro extracellular RNA (exRNA) studies, including extracellular vesicle (EV) investigations, are confounded by the presence of RNA in cell culture medium components such as foetal bovine serum (FBS). The answer, according to their data, is a resounding "yes". Even after lengthy ultracentrifugation to remove bovine EVs from FBS, the majority of exRNA in FBS remained. Although technical factors may affect the degree of depletion, residual EVs and exRNA in FBS could influence the conclusions of in vitro studies: certainly, for secreted RNA, and possibly also for cell-associated RNA. In this commentary, we critically examine some of the literature in this field, including a recent study from some of the authors of this piece, in light of the Wei et al. study and explore how cell culture-derived RNAs may affect what we think we know about EV RNAs. These findings hold particular consequence as the field moves towards a deeper understanding of EV-RNA associations and potential functions.

Indexed as

artefactcell culturecontaminationexosomesextracellular vesiclesmicroRNAmicrovesiclesRNAserumultracentrifugation

Identifiers

PMID28326168
PMCPMC5328325

What OpenQuestion holds

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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.