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The role of caspases in cryoinjury: caspase inhibition strongly improves the recovery of cryopreserved hematopoietic and other cells
University of Münster, Germany and University of Düsseldorf, Germany.
University of Münster, Germany.
University of Münster, Germany and University of Düsseldorf, Germany .
University of Muenster, Germany.
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2002 (English)In: The FASEB Journal, ISSN 0892-6638, E-ISSN 1530-6860, Vol. 16, no 10, 1651-+ p.Article in journal (Refereed) Published
Abstract [en]

Cryopreserved cells and tissues are increasingly used for stem cell transplantation and tissue engineering. However, their freezing, storage, and thawing is associated with severe damage, suggesting the need for better cryopreservation methods. Here, we show that activation of caspase-3 is induced during the freeze-thaw process. Moreover, we demonstrate that prevention of caspase activation by the caspase inhibitor zVAD-fmk strongly improves the recovery and survival of several cryopreserved cell types and hematopoietic progenitor cells. A short preincubation with the caspase inhibitor after thawing also enhances the colony-forming activity of hematopoietic progenitor cells up to threefold. Furthermore, overexpression of Bcl-2, but not the blockade of the death receptor signaling, confers protection, indicating that cryoinjury-associated cell death is mediated by a Bcl-2-controlled mitochondrial pathway. Thus, our data suggest the use of zVAD-fmk as an efficient cryoprotective agent. The addition of caspase inhibitors may be an important tool for the cryopreservation of living cells and advantageous in cell transplantation, tissue engineering, and other genetic technologies.

Place, publisher, year, edition, pages
Federation of American Societies for Experimental Biology , 2002. Vol. 16, no 10, 1651-+ p.
Keyword [en]
activation, Apoptosis, c-myc, calpains, cathepsins, cryopreservation, death receptors, endothelial-cells, induced apoptosis, mammalian-cells, mechanisms, mediated apoptosis, peripheral-blood, preservation injury, stem cells
National Category
Biochemistry and Molecular Biology Cell Biology
URN: urn:nbn:se:liu:diva-87009DOI: 10.1096/fj.02-0034fjeISI: 000177814000020OAI: diva2:584225
Available from: 2013-01-08 Created: 2013-01-08 Last updated: 2013-09-03

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Los, Marek Jan
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