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Lessons from nature for preservation of mammalian cells, tissues, and organs.
MedLine Citation:
PMID:  21191664     Owner:  NLM     Status:  Publisher    
The study of mechanisms by which animals tolerate environmental extremes may provide strategies for preservation of living mammalian materials. Animals employ a variety of compounds to enhance their survival, including production of disaccharides, glycerol, and antifreeze compounds. The cryoprotectant glycerol was discovered before its role in amphibian survival. In the last decade, trehalose has made an impact on freezing and drying methods for mammalian cells. Investigation of disaccharides was stimulated by the variety of organisms that tolerate dehydration stress by accumulation of disaccharides. Several methods have been developed for the loading of trehalose into mammalian cells, including inducing membrane lipid-phase transitions, genetically engineered pores, endocytosis, and prolonged cell culture with trehalose. In contrast, the many antifreeze proteins (AFPs) identified in a variety of organisms have had little impact. The first AFPs to be discovered were found in cold water fish; their AFPs have not found a medical application. Insect AFPs function by similar mechanisms, but they are more active and recombinant AFPs may offer the best opportunity for success in medical applications. For example, in contrast to fish AFPs, transgenic organisms expressing insect AFPs exhibit reduced ice nucleation. However, we must remember that nature's survival strategies may include production of AFPs, antifreeze glycolipids, ice nucleators, polyols, disaccharides, depletion of ice nucleators, and partial desiccation in synchrony with the onset of winter. We anticipate that it is only by combining several natural low temperature survival strategies that the full potential benefits for mammalian cell survival and medical applications can be achieved.
Kelvin G M Brockbank; Lia H Campbell; Elizabeth D Greene; Matthew C G Brockbank; John G Duman
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2010-12-30
Journal Detail:
Title:  In vitro cellular & developmental biology. Animal     Volume:  -     ISSN:  1543-706X     ISO Abbreviation:  -     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-12-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9418515     Medline TA:  In Vitro Cell Dev Biol Anim     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Cell & Tissue Systems, Inc., 2231 Technical Parkway, Suite A, North Charleston, SC, 29401, USA,
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