Comparison of urinary extracellular vesicle isolation methods for transcriptomic biomarker research in diabetic kidney disease

Urinary Extracellular Vesicles (uEV) have emerged as a source for biomarkers of kidney damage, holding potential to replace the conventional invasive techniques including kidney biopsy. However, comprehensive studies characterizing uEV isolation methods with patient samples are rare. Here we compare...

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Veröffentlicht in:Journal of extracellular vesicles 2020-12, Vol.10 (2), p.e12038-n/a
Hauptverfasser: Barreiro, Karina, Dwivedi, Om Prakash, Leparc, German, Rolser, Marcel, Delic, Denis, Forsblom, Carol, Groop, Per‐Henrik, Groop, Leif, Huber, Tobias B., Puhka, Maija, Holthofer, Harry
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container_issue 2
container_start_page e12038
container_title Journal of extracellular vesicles
container_volume 10
creator Barreiro, Karina
Dwivedi, Om Prakash
Leparc, German
Rolser, Marcel
Delic, Denis
Forsblom, Carol
Groop, Per‐Henrik
Groop, Leif
Huber, Tobias B.
Puhka, Maija
Holthofer, Harry
description Urinary Extracellular Vesicles (uEV) have emerged as a source for biomarkers of kidney damage, holding potential to replace the conventional invasive techniques including kidney biopsy. However, comprehensive studies characterizing uEV isolation methods with patient samples are rare. Here we compared performance of three established uEV isolation workflows for their subsequent use in transcriptomics analysis for biomarker discovery in diabetic kidney disease. We collected urine samples from individuals with type 1 diabetes with macroalbuminuria and healthy controls. We isolated uEV by Hydrostatic Filtration Dialysis (HFD), ultracentrifugation (UC), and a commercial kit‐ based isolation method (NG), each with different established urine clearing steps. Purified EVs were analysed by electron microscopy, nanoparticle tracking analysis, and Western blotting. Isolated RNAs were subjected to miRNA and RNA sequencing. HFD and UC samples showed close similarities based on mRNA sequencing data. NG samples had a lower number of reads and different mRNA content compared to HFD or UC. For miRNA sequencing data, satisfactory miRNA counts were obtained by all methods, but miRNA contents differed slightly. This suggests that the isolation workflows enrich specific subpopulations of miRNA‐rich uEV preparation components. Our data shows that HFD,UC and the kit‐based method are suitable methods to isolate uEV for miRNA‐seq. However, only HFD and UC were suitable for mRNA‐seq in our settings.
doi_str_mv 10.1002/jev2.12038
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However, comprehensive studies characterizing uEV isolation methods with patient samples are rare. Here we compared performance of three established uEV isolation workflows for their subsequent use in transcriptomics analysis for biomarker discovery in diabetic kidney disease. We collected urine samples from individuals with type 1 diabetes with macroalbuminuria and healthy controls. We isolated uEV by Hydrostatic Filtration Dialysis (HFD), ultracentrifugation (UC), and a commercial kit‐ based isolation method (NG), each with different established urine clearing steps. Purified EVs were analysed by electron microscopy, nanoparticle tracking analysis, and Western blotting. Isolated RNAs were subjected to miRNA and RNA sequencing. HFD and UC samples showed close similarities based on mRNA sequencing data. NG samples had a lower number of reads and different mRNA content compared to HFD or UC. For miRNA sequencing data, satisfactory miRNA counts were obtained by all methods, but miRNA contents differed slightly. This suggests that the isolation workflows enrich specific subpopulations of miRNA‐rich uEV preparation components. Our data shows that HFD,UC and the kit‐based method are suitable methods to isolate uEV for miRNA‐seq. However, only HFD and UC were suitable for mRNA‐seq in our settings.</abstract><cop>United States</cop><pub>John Wiley &amp; Sons, Inc</pub><pmid>33437407</pmid><doi>10.1002/jev2.12038</doi><tpages>18</tpages><oa>free_for_read</oa></addata></record>
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subjects Adult
Aged
Biomarkers
Biomarkers - urine
Biopsy
Case-Control Studies
Cellulose acetate
Creatinine
Diabetes
Diabetes mellitus (insulin dependent)
Diabetes Mellitus, Type 1 - complications
diabetic kidney disease
Diabetic Nephropathies - diagnosis
Diabetic Nephropathies - etiology
Diabetic Nephropathies - metabolism
Diabetic Nephropathies - urine
Dialysis
Electron microscopy
exosomes
Extracellular vesicles
Extracellular Vesicles - genetics
Extracellular Vesicles - metabolism
Female
Follow-Up Studies
Gene Expression Regulation
Hemodialysis
Humans
isolation
Kidney diseases
Lipids
Male
Methods
MicroRNAs - genetics
Middle Aged
miRNA
miRNA sequencing
mRNA sequencing
Nanoparticles
Prognosis
Proteins
Transcriptome
Transcriptomics
Ultracentrifugation
urinary extracellular vesicles
Urine
Western blotting
title Comparison of urinary extracellular vesicle isolation methods for transcriptomic biomarker research in diabetic kidney disease
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