Zhang L, Xu Y, Xu J, Wei Y, Xu X. Protein kinase A inhibitor, H89, significantly enhances survival rate of dissociated human embryonic stem cells following cryopreservation.
Cell Prolif 2016;
49:589-98. [PMID:
27484641 DOI:
10.1111/cpr.12278]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 07/01/2016] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVES
Human embryonic stem cells (hESCs) have huge potential for establishment of disease models and for treating degenerative diseases. However, the extremely low survival level of dissociated hESCs following cryopreservation is been a tremendous problem to allow for their rapid expansion, genetic manipulation and future medical applications. In this study, we have aimed to develop an efficient strategy to improve survival of dissociated hESCs after cryopreservation.
MATERIALS AND METHODS
Human embryonic stem cells (H9 line), dissociated into single cells, were cryopreserved using the slow-freezing method. Viable cells and their colony numbers in culture after cryopreservation were evaluated when treated with protein kinase A inhibitor H89. Western blotting was carried out to investigate mechanisms of low survival levels of dissociated hESCs following cryopreservation. Immunofluorescence, reverse transcription-polymerase chain reaction (RT-PCR), in vitro and in vivo differentiation were performed to testify to pluripotency and differentiation ability of hte cryopreserved cells treated with H89.
RESULTS
H89 significantly improved survival level of dissociated hESCs after cryopreservation through ROCK inhibition. H89-treated cells still maintained their pluripotency and differentiation capacity.
CONCLUSIONS
This new approach for cryopreservation of single hESCs, using H89, can promote potential use of hESCs in regenerative medicine in the future.
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