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Identification of potential protein quality markers in pathogen inactivated and gamma‐irradiated red cell concentrates
Author(s) -
Chen Deborah,
Schubert Peter,
Devine Dana V.
Publication year - 2017
Publication title -
proteomics – clinical applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.948
H-Index - 54
eISSN - 1862-8354
pISSN - 1862-8346
DOI - 10.1002/prca.201600121
Subject(s) - hemolysis , proteome , hemoglobin , proteomics , red blood cell , biology , membrane protein , biochemistry , membrane , immunology , gene
Purpose Post‐collection manipulations (PCMs) aim to increase blood product safety. However, PCMs improve safety at a cost to quality, causing elevated hemolysis. As hemolysis is linked to red blood cell membrane integrity, a quantitative proteomics approach was employed to assess membrane proteome alterations induced by PCMs. Experimental design Three ABO‐matched whole blood (WB) units were pooled‐and‐split into three identical units. One WB unit was treated with riboflavin/ultraviolet illumination prior to red cell concentrate (RCC) production (RCC WB* ). Two WB units were produced into RCC; one was gamma‐irradiated (RCC γ ) and the other was left untreated as control (RCC Ø ). In vitro quality parameters were measured during storage. Membrane protein profiles of RCC Ø , RCC γ , and RCC WB* were assessed on selected hemoglobin‐depleted membrane fractions using a quantitative proteomics approach based on iTRAQ. Results Quantitative proteomic analysis identified 100 proteins at the membrane, with seven unique proteins exhibiting significant changes in RCC WB* at day 28 of storage. Membrane peroxiredoxin‐2, catalase, and proteasome levels demonstrated robust negative correlation with percentage hemolysis. Conclusion Overall, the in vitro parameters and alterations of membrane protein profiles indicated that pathogen inactivation treatment impacts RCC quality more severely than gamma‐irradiation and that it may induce damage through a predominately oxidative mechanism.