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

Robert C. Deller, Jeffrey E. Pessin, Manu Vatish, Daniel A. Mitchell, Matthew I. Gibson

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)1079-1084
Number of pages6
JournalBiomaterials Science
Volume4
Issue number7
DOIs
StatePublished - Jul 2016

ASJC Scopus subject areas

  • Biomedical Engineering
  • Materials Science(all)

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