Pallotta V, Rinalducci S, Zolla L. Red blood cell storage affects the stability of cytosolic native protein complexes.
Transfusion 2015;
55:1927-36. [PMID:
25808351 DOI:
10.1111/trf.13079]
[Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 02/08/2015] [Accepted: 02/10/2015] [Indexed: 01/20/2023]
Abstract
BACKGROUND
Refrigerated storage of red blood cell (RBC) units promotes the progressive accumulation of the so-called storage lesions, a widespread series of alterations to morphology, metabolism, and proteome integrity of stored RBCs. However, while storage lesions targeting the RBC membrane fraction have been widely documented, the cytosolic fraction is as yet an underinvestigated cause of the technical inconveniences related to the high abundance of hemoglobin.
STUDY DESIGN AND METHODS
By exploiting a recently ideated preparative two-dimensional clear native electrophoresis, followed by mass spectrometry analysis, we could monitor the changes of soluble multiprotein complexes (MPCs) in RBCs after 0, 21, and 35 days of storage under standard blood banking conditions.
RESULTS
Data indicate a substantial storage-dependent alteration of RBC MPCs, particularly of those involved in energy and redox metabolism, confirming previous evidence about the progressive dysregulation of these pathways in long-stored units.
CONCLUSION
The use of native gel-based proteomics to investigate MPCs present in the RBC cytosolic fraction proved to be a powerful tool. Results collected represent a preliminary advance in the knowledge of the key role of native cytosolic MPCs in context of RBC storage lesion. Multiprotein organization and interacting partners of some key enzymes have been found to change during storage duration, suggesting that future studies will be needed to assess whether such alterations could influence their activity and efficiency.
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