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Experimental Study on the Cryopreservation of LLC-PK1 Epithelial Cells with Hypoxic UW Solution

机译:低氧超低温溶液冷冻保存LLC-PK1上皮细胞的实验研究。

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摘要

The effects of oxygen partial pressure on cryopreservation of the cells with organ preservation solution were explored. Hypoxic UW solution was made by purging the UW solution with argon. The pig proximal tubule epithelial cells (LLC-PK1 cells) were cryopreserved in hypoxic UW solution (Ar-UW group) or standard UW solution (UW group) at 4℃ for 48 h. Trypan blue staining and LDH detection were performed to evaluate the injury of the cells. The results showed that the oxygen partial pressure in Ar-UW group was significantly declined from 242±6 mmHg to 83±10 mmHg. After cryopreservation at 4℃ for 48 h, LDH leakage rate and Trypan blue-stained rate in Ar-UW group were (11.3±3.4)% and (10.5±4.7)%, respectively, which were significantly lower than in UW group [(49.5+6.9)% and (47.6±9.3)% respectively, both P< 0.01]. It was concluded that lower oxygen partial pressure of UW solution was more beneficial to the cryopreservation of LLC.
机译:探索了氧分压对器官保存液冷冻保存细胞的影响。通过用氩吹扫UW溶液制备低氧UW溶液。将猪近端小管上皮细胞(LLC-PK1细胞)在缺氧UW溶液(Ar-UW组)或标准UW溶液(UW组)中于4℃冷冻保存48 h。进行台盼蓝染色和LDH检测以评估细胞的损伤。结果表明,Ar-UW组的氧分压从242±6 mmHg显着降低至83±10 mmHg。在4℃冷冻保存48小时后,Ar-UW组的LDH泄漏率和锥虫蓝染色率分别为(11.3±3.4)%和(10.5±4.7)%,显着低于UW组[[分别为49.5±6.9%和(47.6±9.3)%,均P <0.01。结论是,较低的UW溶液氧分压更有利于LLC的冷冻保存。

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