Journal Highlight: Effects of gamma irradiation and 15 days of subsequent ex vivo storage on the cytosolic red blood cell proteome analyzed by 2D-DIGE and Orbitrap MS

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  • Published: Sep 2, 2013
  • Author: separationsNOW
  • Channels: Proteomics & Genomics
thumbnail image: Journal Highlight: Effects of gamma irradiation and 15 days of subsequent ex vivo storage on the cytosolic red blood cell proteome analyzed by 2D-DIGE and Orbitrap MS

Gamma irradiation of red blood cells (RBC) and subsequent ex vivo storage according to the Council of Europe guidelines were found to affect RBC protein structures.

Image: NIH.

Effects of gamma irradiation and 15 days of subsequent ex vivo storage on the cytosolic red blood cell proteome analyzed by 2D-DIGE and Orbitrap MS

Proteomics - Clinical Applications, 2013, 7, 561-570
Katja Walpurgis, Maxie Kohler, Andreas Thomas, Folker Wenzel, Hans Geyer, Wilhelm Schänzer, Mario Thevis

Abstract: Gamma irradiation of red blood cell (RBC) concentrates is routinely used to prevent transfusion-associated graft-versus-host disease. So far, the effects of ionizing radiation on RBC structure and function and especially the proteome are not fully understood. RBC concentrates were irradiated with 30 Gy and stored for 1 or 15 days at 4 ± 2°C. Following cell lysis and hemoglobin depletion, 2D-DIGE was used to examine the changes of the cytosolic RBC proteome. Significantly altered spots were analyzed using bottom-up proteomic approaches and selected marker proteins validated by western blotting. Gamma irradiation was found to enhance conventional RBC storage lesions. Following 15 days of postirradiation storage, the abundances of a total of 27 spots were significantly altered and 3 out of 13 identified proteins were selected and validated as potential marker proteins for the assessment of irradiation-induced cytosolic RBC lesions. Gamma irradiation and subsequent ex vivo storage according to the Council of Europe guidelines were found to affect RBC protein structures. The validated marker proteins can serve as a basis for the development of a screening assay to monitor the quality of irradiated RBC concentrates during ex vivo storage.

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