Protocol for cryopreservation of red blood cells that controls ice crystal formation by fulvic acid

STAR Protoc. 2023 Mar 14;4(2):102160. doi: 10.1016/j.xpro.2023.102160. Online ahead of print.


The development of biocompatible ice-controlling materials for non-vitreous cryopreservation of cells is of great importance to the field of biomedicine. Here, we present a protocol to use fulvic acid (FA) for efficient non-vitreous cryopreservation of red blood cells (RBCs) that both promotes the melting of ice crystals and retards their growth/recrystallization. We describe steps for FA fractionation and performing tests for ice recrystallization and ice freezing/thawing. We then detail the freezing/thawing of RBCs, recovering RBCs, and testing their viability. For complete details on the use and execution of this protocol, please refer to Bai et al. (2022).1.

PMID:36924506 | DOI:10.1016/j.xpro.2023.102160


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