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In-Depth Analysis of the Extracorporeal Proteome Adsorbed to Dialysis Membranes during Hemodialysis

Used hemodialysis membranes (HD-M) are a valuable reservoir of biological information. Proteins bind to HD-M, but whether this process depends on the type of membrane or patient factors or selectively affects specific protein classes has not been adequately elucidated. State-of-the-art proteomics te...

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Autores principales: Daniel-Fischer, Lisa, Sobieszek, Isabel J., Wagner, Anja, Sacnun, Juan Manuel, Watschinger, Bruno, Aufricht, Christoph, Kratochwill, Klaus, Herzog, Rebecca
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9695746/
https://www.ncbi.nlm.nih.gov/pubmed/36363675
http://dx.doi.org/10.3390/membranes12111120
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author Daniel-Fischer, Lisa
Sobieszek, Isabel J.
Wagner, Anja
Sacnun, Juan Manuel
Watschinger, Bruno
Aufricht, Christoph
Kratochwill, Klaus
Herzog, Rebecca
author_facet Daniel-Fischer, Lisa
Sobieszek, Isabel J.
Wagner, Anja
Sacnun, Juan Manuel
Watschinger, Bruno
Aufricht, Christoph
Kratochwill, Klaus
Herzog, Rebecca
author_sort Daniel-Fischer, Lisa
collection PubMed
description Used hemodialysis membranes (HD-M) are a valuable reservoir of biological information. Proteins bind to HD-M, but whether this process depends on the type of membrane or patient factors or selectively affects specific protein classes has not been adequately elucidated. State-of-the-art proteomics techniques are capable of identifying and quantifying this therapy-specific subproteome to enable the analysis of disease- or membrane-induced pathophysiologies. We demonstrate the feasibility of the deep proteomic characterization of the extracorporeal proteome adsorbed to HD-M. A shotgun proteomics approach using nano-flow liquid chromatography coupled to mass-spectrometry identified 1648 unique proteins eluted by a chaotropic buffer from the HD-M of eight patients. In total, 995 proteins were present in all eluates; a more stringent approach showed that a core proteome of 310 proteins could be identified independently in all samples. Stability of the dialyzer proteome was demonstrated by a >90% re-identification rate on longitudinal samples of a single patient. The core proteome showed an overrepresentation of pathways of hemostasis and the immune system, and showed differences in membrane materials (polysulfone vs. helixone). This study demonstrates that optimized conditions combined with high-performance proteomics enable the in-depth exploration of the subproteome bound to HD-M, yielding a stable core proteome that can be exploited to study patient-specific factors and improve hemodialysis therapy.
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spelling pubmed-96957462022-11-26 In-Depth Analysis of the Extracorporeal Proteome Adsorbed to Dialysis Membranes during Hemodialysis Daniel-Fischer, Lisa Sobieszek, Isabel J. Wagner, Anja Sacnun, Juan Manuel Watschinger, Bruno Aufricht, Christoph Kratochwill, Klaus Herzog, Rebecca Membranes (Basel) Article Used hemodialysis membranes (HD-M) are a valuable reservoir of biological information. Proteins bind to HD-M, but whether this process depends on the type of membrane or patient factors or selectively affects specific protein classes has not been adequately elucidated. State-of-the-art proteomics techniques are capable of identifying and quantifying this therapy-specific subproteome to enable the analysis of disease- or membrane-induced pathophysiologies. We demonstrate the feasibility of the deep proteomic characterization of the extracorporeal proteome adsorbed to HD-M. A shotgun proteomics approach using nano-flow liquid chromatography coupled to mass-spectrometry identified 1648 unique proteins eluted by a chaotropic buffer from the HD-M of eight patients. In total, 995 proteins were present in all eluates; a more stringent approach showed that a core proteome of 310 proteins could be identified independently in all samples. Stability of the dialyzer proteome was demonstrated by a >90% re-identification rate on longitudinal samples of a single patient. The core proteome showed an overrepresentation of pathways of hemostasis and the immune system, and showed differences in membrane materials (polysulfone vs. helixone). This study demonstrates that optimized conditions combined with high-performance proteomics enable the in-depth exploration of the subproteome bound to HD-M, yielding a stable core proteome that can be exploited to study patient-specific factors and improve hemodialysis therapy. MDPI 2022-11-09 /pmc/articles/PMC9695746/ /pubmed/36363675 http://dx.doi.org/10.3390/membranes12111120 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Daniel-Fischer, Lisa
Sobieszek, Isabel J.
Wagner, Anja
Sacnun, Juan Manuel
Watschinger, Bruno
Aufricht, Christoph
Kratochwill, Klaus
Herzog, Rebecca
In-Depth Analysis of the Extracorporeal Proteome Adsorbed to Dialysis Membranes during Hemodialysis
title In-Depth Analysis of the Extracorporeal Proteome Adsorbed to Dialysis Membranes during Hemodialysis
title_full In-Depth Analysis of the Extracorporeal Proteome Adsorbed to Dialysis Membranes during Hemodialysis
title_fullStr In-Depth Analysis of the Extracorporeal Proteome Adsorbed to Dialysis Membranes during Hemodialysis
title_full_unstemmed In-Depth Analysis of the Extracorporeal Proteome Adsorbed to Dialysis Membranes during Hemodialysis
title_short In-Depth Analysis of the Extracorporeal Proteome Adsorbed to Dialysis Membranes during Hemodialysis
title_sort in-depth analysis of the extracorporeal proteome adsorbed to dialysis membranes during hemodialysis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9695746/
https://www.ncbi.nlm.nih.gov/pubmed/36363675
http://dx.doi.org/10.3390/membranes12111120
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