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Effects of osmotic and cold shock on adherent human mesenchymal stem cells during cryopreservation

Paper ID Volume ID Publish Year Pages File Format Full-Text
23634 43459 2012 8 PDF Available
Title
Effects of osmotic and cold shock on adherent human mesenchymal stem cells during cryopreservation
Abstract

Cryopreservation is one of the most practical methods for the long-term storage of cell-matrix systems to ensure off-shelf availability in tissue engineering, stem cell therapy and drug testing. The aim of this study is to investigate the effects of osmotic and cold shock caused by the procedures of cryoprotectant agent addition/removal and freezing during cryopreservation on cell viability, intracellular properties, such as filamentous actin distribution, mitochondria localization and intracellular pH, and further recovery of adherent human mesenchymal stem cells. Our results shows a significant decrease in cell viability around 30% after cryopreservation at the cooling rates of 1, 5 and 10 °C/min in comparison to the adherent cells and the cells in suspension, implicating that the adherent cells are more vulnerable than the suspension cells. The osmotic shock and cold shock induced by freezing lead to dramatic changes in the intracellular properties. The cooling rate of 10 °C/min results in acidification of intracellular pH, distortion and accumulation of filamentous actin, and aggregation of mitochondria. Our findings also suggest that the cooling rate of 1 °C/min helps to maintain cell morphology and attachment, integrity and uniformity of filamentous actin, and leads to better cell recovery after cryopreservation.

► Adherent hMSCs are more vulnerable than suspended hMSCs at different cooling rates. ► Cooling rates have different effects on adherent hMSCs. ► Freezing and CPA have varying effects on intracellular properties of adherent hMSCs. ► The cooling rate of 1 °C/min leads to better cell recovery after cryopreservation.

Keywords
Human mesenchymal stem cells; Cryopreservation; Osmotic shock; Cold shock; Adherent cells
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Effects of osmotic and cold shock on adherent human mesenchymal stem cells during cryopreservation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 162, Issues 2–3, 31 December 2012, Pages 224–231
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us