Cryopreservation of human bone marrow‐derived mesenchymal stem cells with reduced dimethylsulfoxide and well‐defined freezing solutions
- 1 November 2010
- journal article
- research article
- Published by Wiley in Biotechnology Progress
- Vol. 26 (6), 1635-1643
- https://doi.org/10.1002/btpr.464
Abstract
The aim of this study is to investigate the feasibility of using well defined, serum‐free freezing solutions with a reduced level of dimethylsulfoxide (DMSO) of 7.5, 5, and 2.5% (v/v) in the combination with polyethylene glycol (PEG) or trehalose to cryopreserve human bone marrow‐derived mesenchymal stem cells (hBMSCs), a main source of stem cells for cell therapy and tissue engineering. The standard laboratory freezing protocol of around 1°C/min was used in the experiments. The efficiency of 1,2‐propandiol on cryopreservation of hBMSCs was explored. We measured the post‐thawing cell viability and early apoptotic behaviors, cell metabolic activities, and growth dynamics. Cell morphology and osteogenic, adipogenic and chondrogenic differentiation capability were also tested after cryopreservation. The results showed that post‐thawing viability of hBMSCs in 7.5% DMSO (v/v), 2.5% PEG (w/v), and 2% bovine serum albumin (BSA) (w/v) was comparable with that obtained in conventional 10% DMSO, that is, 82.9 ± 4.3% and 82.7 ± 3.7%, respectively. In addition, 5% DMSO (v/v) with 5% PEG (w/v) and 7.5% 1,2‐propandiol (v/v) with 2.5% PEG (w/v) can provide good protection to hBMSCs when 2% albumin (w/v) is present. Enhanced cell viability was observed with the addition of albumin to all tested freezing solutions. © 2010 American Institute of Chemical Engineers Biotechnol. Prog., 2010Keywords
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