Optimization of cryopreservation condition for hematopoietic stem cells from umbilical cord blood |
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| Authors: | Jeong Hwa Son Yoon Jeong Heo Mi Young Park Hyung Hoi Kim Kyu Sup Lee |
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| Affiliation: | aBinex Research Institute, Binex Co. Ltd., 480-2, Jangrim-dong, Saha-gu, Busan 604-846, Republic of Korea;bDepartment of Laboratory Medicine, Pusan National University Hospital, Pusan National University College of Medicine, 305, Gudeok-Ro, Seo-Gu, Busan 602-739, Republic of Korea;cMedical Research Institute, Pusan National University, Busan 602-739, Republic of Korea |
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| Abstract: | The conditions for cryopreservation of CD34+ hematopoietic stem cells (HSC) from umbilical cord blood (UCB) were optimized with a new cryo-medium containing 10% ethylene glycol (EG) and 2% dimethyl sulfoxide (Me2SO) using a controlled-rate freezing (CRF) method. After the cryopreservation of mononuclear cells (MNC) from UCB, recoveries of MNC, CD34+ cells, and total colony-forming units (CFU) were significantly improved compared to those in the control cryo-medium containing 10% Me2SO and 2% Dextran-40 (P < 0.05). This study shows that the new cryo-medium and CRF method provide better recoveries of MNC, HSC and total CFU than the control cryo-medium and isopropylalcohol freezing (IPA) method. Therefore, this cryo-medium, combined with the CRF method, is valuable for optimizing cryopreservation conditions for HSC from UCB to obtain satisfactory HSC recovery. |
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| Keywords: | Cryopreservation HSC MNC EG CRF Recovery |
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