Enhanced non-vitreous cryopreservation of immortalized and primary cells by ice-growth inhibiting polymers

Cell cryopreservation is an essential tool in modern biotechnology and medicine. The ability to freeze, store and distribute materials underpins basic cell biology and enables storage of donor cells needed for transplantation and regenerative medicine. However, many cell types do not survive freezin...

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Bibliographic Details
Published in:Biomaterials science 2016-07, Vol.4 (7), p.179-184
Main Authors: Deller, Robert C, Pessin, Jeffrey E, Vatish, Manu, Mitchell, Daniel A, Gibson, Matthew I
Format: Article
Language:English
Subjects:
A549 Cells
Addition polymerization
Animals
Architecture
Biotechnology
Cell Line
Cell Survival
Cryopreservation - methods
Cryoprotective Agents - chemistry
Dimethyl Sulfoxide
Hepatocytes - cytology
Humans
Ice
Polymers
Polyvinyl Alcohol - chemistry
Rats
Recrystallization
Solvents
Solvents - chemistry
Stores
Surgical implants
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Summary:Cell cryopreservation is an essential tool in modern biotechnology and medicine. The ability to freeze, store and distribute materials underpins basic cell biology and enables storage of donor cells needed for transplantation and regenerative medicine. However, many cell types do not survive freezing and the current state-of-the-art involves the addition of significant amounts of organic solvents as cryoprotectants, which themselves can be cytotoxic, or simply interfere with assays. A key cause of cell death in cryopreservation is ice recrystallization (growth), which primarily occurs during thawing. Here it is demonstrated that the addition of ice recrystalization inhibiting polymers to solutions containing low (non vitrifying) concentrations of DMSO enhance cell recovery rates by up to 75%. Cell functionality is also demonstrated using a placental cell line, and enhanced cryopreservation of primary rat hepatocytes is additionally shown. The crucial role of the polymers architecture (chain length) is shown, with shorter polymers being more effective than longer ones. Ice growth inhibiting polymers are shown to enhance the (non-vitrifying) cryopreservation of several cell lines and also primary hepatocytes.
ISSN:2047-4830
2047-4849
DOI:10.1039/c6bm00129g