Small molecule ice recrystallization inhibitors enable freezing of human red blood cells with reduced glycerol concentrations.

Small molecule ice recrystallization inhibitors enable freezing of human red blood cells with reduced glycerol concentrations.
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DOI:
10.1038/srep09692
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发表时间:
2015-04-08
期刊:
影响因子:
4.6
通讯作者:
Ben RN
Ben RN
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Capicciotti CJ;Kurach JD;Turner TR;Mancini RS;Acker JP;Ben RN

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在北美,红细胞 (RBC) 在临床环境中使用高甘油浓度 (40% w/v) 和缓慢冷却速率 (~1°C/min) 进行冷冻保存,然后储存在 -80°C 下,而欧洲方案则使用较低的甘油浓度和快速冷冻速率。解冻后和输血前,必须除去甘油以避免血管内溶血。这是一个耗时的过程,需要专门的设备。 β-PMP-Glc 和 β-pBrPh-Glc 等小分子冰重结晶抑制剂 (IRIs) 能够防止冰重结晶,这一过程会导致细胞损伤并降低冷冻保存后的细胞活力。在此,我们报道,在 15% 甘油溶液中添加 110 mM β-PMP-Glc 或 30 mM β-pBrPh-Glc,使用缓慢的冷却速率可将解冻后红细胞的完整性提高 30-50%,并强调小分子 IRI 在保存细胞方面的潜力。
In North America, red blood cells (RBCs) are cryopreserved in a clinical setting using high glycerol concentrations (40% w/v) with slow cooling rates (~1°C/min) prior to storage at −80°C, while European protocols use reduced glycerol concentrations with rapid freezing rates. After thawing and prior to transfusion, glycerol must be removed to avoid intravascular hemolysis. This is a time consuming process requiring specialized equipment. Small molecule ice recrystallization inhibitors (IRIs) such as β-PMP-Glc and β-pBrPh-Glc have the ability to prevent ice recrystallization, a process that contributes to cellular injury and decreased cell viability after cryopreservation. Herein, we report that addition of 110 mM β-PMP-Glc or 30 mM β-pBrPh-Glc to a 15% glycerol solution increases post-thaw RBC integrity by 30-50% using slow cooling rates and emphasize the potential of small molecule IRIs for the preservation of cells.
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