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In vitro study on cryopreservation of peripheral blood stem cells with uncontrolled freezer

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Chinese Journal of Cancer Research

Abstract

Objective: To evaluate the effects of cryopreservation of APBSCs in −80°C un-controlled freezer and liquid nitrogen, and to search for the efficient combined cryoprotectant and the highest cell concentration for cryopreservating peripheral blood stem cell (PBSC). Methods: To compare the effect of three combined cryoprotectants, evaluation of in vitro proliferative capacity by colony-forming unit-Granulocyte-macrophage (CFU-GM) and burst-forming Unit-erythroid (BFU-E) assay, immunophenotyping for CD34+/CD38 cells by FCM, and viability assessment by trypan blue exclusion were performed. Results: The cryoprotectant 10%DMSO+HES+auto-Plasma resulted in the highest recovery rates. CFU-GM and BFU-E were (78.7±9.8)%, (69.8±14.1)%, respectively. The recovery rates of CFU-GM and BFU-E in A/C groups were (68.3±6.2)%/ (65.8±7.2)% and (63.4±9.7)%/ (60.4±10.5)%, respectively. The recovery rates of CD34+/CD38 cells and cell viability with the three combined reagents were 90% and 80%, respectively. Conclusion: 5%DMSO+ HES+auto-PLASMA is an ideal combined cryoprotectant for cryopreserving PBSC. The cell concentrations may be cryopreserved at 4×108 ml−1.

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Correspondence to Shi Yuan-kai.

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Foundation item: This work was supported by a grant from the National “95” Key Project of China(No. 96-906-01-12).

Biography: Zhang Jun-ping(1965–), female, master of medicine, associate professor, now address: Shanxi Tumor Hospital, majors in hematological oncology.

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Zhang, Jp., Shi, Yk., He, Xh. et al. In vitro study on cryopreservation of peripheral blood stem cells with uncontrolled freezer. Chin. J. Cancer Res. 14, 235–239 (2002). https://doi.org/10.1007/s11670-002-0052-1

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  • DOI: https://doi.org/10.1007/s11670-002-0052-1

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