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Sökning: id:"swepub:oai:lup.lub.lu.se:202de3e9-3090-46ef-9d84-0f1f4072cfbd" > Urinary extracellul...

  • Barreiro, KarinaUniversity of Helsinki (författare)

Urinary extracellular vesicles : Assessment of pre-analytical variables and development of a quality control with focus on transcriptomic biomarker research

  • Artikel/kapitelEngelska2021

Förlag, utgivningsår, omfång ...

  • 2021-10-14
  • Wiley,2021

Nummerbeteckningar

  • LIBRIS-ID:oai:lup.lub.lu.se:202de3e9-3090-46ef-9d84-0f1f4072cfbd
  • https://lup.lub.lu.se/record/202de3e9-3090-46ef-9d84-0f1f4072cfbdURI
  • https://doi.org/10.1002/jev2.12158DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:art swepub-publicationtype
  • Ämneskategori:ref swepub-contenttype

Anmärkningar

  • Urinary extracellular vesicles (uEV) are a topical source of non-invasive biomarkers for health and diseases of the urogenital system. However, several challenges have become evident in the standardization of uEV pipelines from collection of urine to biomarker analysis. Here, we studied the effect of pre-analytical variables and developed means of quality control for uEV isolates to be used in transcriptomic biomarker research. We included urine samples from healthy controls and individuals with type 1 or type 2 diabetes and normo-, micro- or macroalbuminuria and isolated uEV by ultracentrifugation. We studied the effect of storage temperature (-20°C vs. -80°C), time (up to 4 years) and storage format (urine or isolated uEV) on quality of uEV by nanoparticle tracking analysis, electron microscopy, Western blotting and qPCR. Urinary EV RNA was compared in terms of quantity, quality, and by mRNA or miRNA sequencing. To study the stability of miRNA levels in samples isolated by different methods, we created and tested a list of miRNAs commonly enriched in uEV isolates. uEV and their transcriptome were preserved in urine or as isolated uEV even after long-term storage at -80°C. However, storage at -20°C degraded particularly the GC-rich part of the transcriptome and EV protein markers. Transcriptome was preserved in RNA samples extracted with and without DNAse, but read distributions still showed some differences in e.g. intergenic and intronic reads. MiRNAs commonly enriched in uEV isolates were stable and concordant between different EV isolation methods. Analysis of never frozen uEV helped to identify surface characteristics of particles by EM. In addition to uEV, qPCR assays demonstrated that uEV isolates commonly contained polyoma viruses. Based on our results, we present recommendations how to store and handle uEV isolates for transcriptomics studies that may help to expedite standardization of the EV biomarker field.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Dwivedi, Om PrakashUniversity of Helsinki (författare)
  • Valkonen, SamiFinnish Red Cross Blood Transfusion Service,University of Helsinki (författare)
  • Groop, Per HenrikUniversity of Helsinki,Folkhälsan Research Center (författare)
  • Tuomi, TiinamaijaLund University,Lunds universitet,Translationell muskelforskning,Forskargrupper vid Lunds universitet,Diabetiska komplikationer,Translational Muscle Research,Lund University Research Groups,Diabetic Complications,Skåne University Hospital,University of Helsinki(Swepub:lu)ti8736tu (författare)
  • Holthofer, HarryUniversity Medical Center Hamburg-Eppendorf,University of Helsinki (författare)
  • Rannikko, AnttiUniversity of Helsinki (författare)
  • Yliperttula, MarjoUniversity of Helsinki (författare)
  • Siljander, PiaUniversity of Helsinki (författare)
  • Laitinen, SaaraFinnish Red Cross Blood Transfusion Service (författare)
  • Serkkola, ElinaOrion Corporation (författare)
  • af Hällström, TaijaAstraZeneca, UK (författare)
  • Forsblom, CarolUniversity of Helsinki,Folkhälsan Research Center (författare)
  • Groop, LeifLund University,Lunds universitet,Translationell muskelforskning,Forskargrupper vid Lunds universitet,Translational Muscle Research,Lund University Research Groups,University of Helsinki,Skåne University Hospital(Swepub:lu)endo-lgr (författare)
  • Puhka, MaijaUniversity of Helsinki (författare)
  • University of HelsinkiFinnish Red Cross Blood Transfusion Service (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Journal of Extracellular Vesicles: Wiley10:122001-3078

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