Determination of variability due to biological and technical variation in urinary extracellular vesicles as a crucial step in biomarker discovery studies
Urinary extracellular vesicles (EVs) are an attractive source of biomarkers for urological diseases. A crucial step in biomarker discovery studies is the determination of the variation parameters to perform a sample size calculation. In this way, a biomarker discovery study with sufficient statistic...
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Online Access: | http://dx.doi.org/10.1080/20013078.2019.1676035 |
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doaj-7cd5955ed3d0495ab5117f847987ff672020-11-25T01:15:37ZengTaylor & Francis GroupJournal of Extracellular Vesicles2001-30782019-12-018110.1080/20013078.2019.16760351676035Determination of variability due to biological and technical variation in urinary extracellular vesicles as a crucial step in biomarker discovery studiesEline Oeyen0Hanny Willems1Ruben ’T Kindt2Koen Sandra3Kurt Boonen4Lucien Hoekx5Stefan De Wachter6Filip Ameye7Inge Mertens8Flemish Institute for Technological Research (VITO)Flemish Institute for Technological Research (VITO)Research Institute for ChromatographyResearch Institute for ChromatographyFlemish Institute for Technological Research (VITO)Antwerp University Hospital (UZA)Antwerp University Hospital (UZA)AZ Maria Middelares GhentFlemish Institute for Technological Research (VITO)Urinary extracellular vesicles (EVs) are an attractive source of biomarkers for urological diseases. A crucial step in biomarker discovery studies is the determination of the variation parameters to perform a sample size calculation. In this way, a biomarker discovery study with sufficient statistical power can be performed to obtain biologically significant biomarkers. Here, a variation study was performed on both the protein and lipid content of urinary EVs of healthy individuals, aged between 52 and 69 years. Ultrafiltration (UF) in combination with size exclusion chromatography (SEC) was used to isolate the EVs from urine. Different experimental variation set-ups were used in this variation study. The calculated standard deviations (SDs) of the 90% least variable peptides and lipids did not exceed 2 and 1.2, respectively. These parameters can be used in a sample size calculation for a well-designed biomarker discovery study at the cargo of EVs.http://dx.doi.org/10.1080/20013078.2019.1676035extracellular vesiclesurinevariationsize exclusion chromatographyproteomicslipidomicslc-ms/mspower analysissample size calculationbiomarker discovery |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Eline Oeyen Hanny Willems Ruben ’T Kindt Koen Sandra Kurt Boonen Lucien Hoekx Stefan De Wachter Filip Ameye Inge Mertens |
spellingShingle |
Eline Oeyen Hanny Willems Ruben ’T Kindt Koen Sandra Kurt Boonen Lucien Hoekx Stefan De Wachter Filip Ameye Inge Mertens Determination of variability due to biological and technical variation in urinary extracellular vesicles as a crucial step in biomarker discovery studies Journal of Extracellular Vesicles extracellular vesicles urine variation size exclusion chromatography proteomics lipidomics lc-ms/ms power analysis sample size calculation biomarker discovery |
author_facet |
Eline Oeyen Hanny Willems Ruben ’T Kindt Koen Sandra Kurt Boonen Lucien Hoekx Stefan De Wachter Filip Ameye Inge Mertens |
author_sort |
Eline Oeyen |
title |
Determination of variability due to biological and technical variation in urinary extracellular vesicles as a crucial step in biomarker discovery studies |
title_short |
Determination of variability due to biological and technical variation in urinary extracellular vesicles as a crucial step in biomarker discovery studies |
title_full |
Determination of variability due to biological and technical variation in urinary extracellular vesicles as a crucial step in biomarker discovery studies |
title_fullStr |
Determination of variability due to biological and technical variation in urinary extracellular vesicles as a crucial step in biomarker discovery studies |
title_full_unstemmed |
Determination of variability due to biological and technical variation in urinary extracellular vesicles as a crucial step in biomarker discovery studies |
title_sort |
determination of variability due to biological and technical variation in urinary extracellular vesicles as a crucial step in biomarker discovery studies |
publisher |
Taylor & Francis Group |
series |
Journal of Extracellular Vesicles |
issn |
2001-3078 |
publishDate |
2019-12-01 |
description |
Urinary extracellular vesicles (EVs) are an attractive source of biomarkers for urological diseases. A crucial step in biomarker discovery studies is the determination of the variation parameters to perform a sample size calculation. In this way, a biomarker discovery study with sufficient statistical power can be performed to obtain biologically significant biomarkers. Here, a variation study was performed on both the protein and lipid content of urinary EVs of healthy individuals, aged between 52 and 69 years. Ultrafiltration (UF) in combination with size exclusion chromatography (SEC) was used to isolate the EVs from urine. Different experimental variation set-ups were used in this variation study. The calculated standard deviations (SDs) of the 90% least variable peptides and lipids did not exceed 2 and 1.2, respectively. These parameters can be used in a sample size calculation for a well-designed biomarker discovery study at the cargo of EVs. |
topic |
extracellular vesicles urine variation size exclusion chromatography proteomics lipidomics lc-ms/ms power analysis sample size calculation biomarker discovery |
url |
http://dx.doi.org/10.1080/20013078.2019.1676035 |
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