A Molecular Basis of Cryopreservation Failure and its Modulation to Improve Cell Survival
The requirement for more effective cryopreservation (CP) methodologies in support of the emerging fields of cell bioprocessing and cell therapy is now critical. Current CP strategies appropriately focus on minimizing the damaging actions of physicochemical stressors and membrane disruption associated with extra- and intracellular ice formation that occurs during the freeze–thaw process. CP protocols derived from this conceptual paradigm, however, yield suboptimal survival rates. We now provide the first report on the identification of delayed-onset cell death following CP and the significance of modulating molecular biological aspects of the cellular responses (apoptosis) to low temperature as an essential component to improve postthaw outcome. In this study we quantitatively examined the molecular basis of cell death associated with CP failure in a canine renal cell model. In addition, we report on the significant improvement in CP outcome through the modulation of these molecular mechanisms by the utilization of an organ preservation solution, HypoThermosol®. Further, the utilization of HypoThermosol® as the preservation medium and the modulation of molecular-based cell death have led to a paradigm shift in biologic preservation methodologies. The recognition of molecular mechanisms associated with CP-induced cell death offers the promise of improved CP of more complex and/or fragile biological systems such as stem cells, engineered tissues, and human organs.
Document Type: Research Article
Affiliations: Institute of Biomedical Technology, State University of New York, Binghamton, NY 13902
Publication date: 01 January 2001
Cell Transplantation publishes original, peer-reviewed research and review articles on the subject of cell transplantation and its application to human diseases. To ensure high-quality contributions from all areas of transplantation, separate section editors and editorial boards have been established. Articles deal with a wide range of topics including physiological, medical, preclinical, tissue engineering, and device-oriented aspects of transplantation of nervous system, endocrine, growth factor-secreting, bone marrow, epithelial, endothelial, and genetically engineered cells, among others. Basic clinical studies and immunological research papers are also featured. To provide complete coverage of this revolutionary field, Cell Transplantation will report on relevant technological advances, and ethical and regulatory considerations of cell transplants. Cell Transplantation is now an Open Access journal starting with volume 18 in 2009, and therefore there will be an inexpensive publication charge, which is dependent on the number of pages, in addition to the charge for color figures. This will allow work to be disseminated to a wider audience and also entitle the corresponding author to a free PDF, as well as prepublication of an unedited version of the manuscript.
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