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Anastasiadi, Alkmini T; Paronis, Efthymios C; Arvaniti, Vasiliki-Zoi; Velentzas, Athanasios D; Apostolidou, Anastasia C; Balafas, Evangelos G; Dzieciatkowska, Monika; Kostomitsopoulos, Nikolaos G; Stamoulis, Konstantinos; Papassideri, Issidora S; D'Alessandro, Angelo; Kriebardis, Anastasios G; Antonelou, Marianna H; Tzounakas, Vassilis L
International journal of molecular sciences, 11/2021, Letnik: 22, Številka: 22Journal Article
Blood donors with beta-thalassemia traits (βThal ) have proven to be good "storers", since their stored RBCs are resistant to lysis and resilient against oxidative/proteotoxic stress. To examine the performance of these RBCs post-storage, stored βThal and control RBCs were reconstituted in plasma donated from transfusion-dependent beta-thalassemic patients and healthy controls, and incubated for 24 h at body temperature. Several physiological parameters, including hemolysis, were evaluated. Moreover, labeled fresh/stored RBCs from the two groups were transfused in mice to assess 24 h recovery. All hemolysis metrics were better in the group of heterozygotes and distinguished them against controls in the plasma environment. The reconstituted βThal samples also presented higher proteasome activity and fewer procoagulant extracellular vesicles. Transfusion to mice demonstrated that βThal RBCs present a marginal trend for higher recovery, regardless of the recipient's immune background and the RBC storage age. According to correlation analysis, several of these advantageous post-storage characteristics are related to storage phenotypes, like the cytoskeleton composition, low cellular fragility, and enhanced membrane proteostasis that characterize stored βThal RBCs. Overall, it seems that the intrinsic physiology of βThal RBCs benefits them in conditions mimicking a recipient environment, and in the circulation of animal models; findings that warrant validation in clinical trials.
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