Alginate-Encapsulation for the Improved Hypothermic Preservation of Human Adipose-Derived Stem Cells

Stem Cells Translational Medicine
Stephen SwiokloChe J Connon

Abstract

Despite considerable progress within the cell therapy industry, unmet bioprocessing and logistical challenges associated with the storage and distribution of cells between sites of manufacture and the clinic exist. We examined whether hypothermic (4°C-23°C) preservation of human adipose-derived stem cells could be improved through their encapsulation in 1.2% calcium alginate. Alginate encapsulation improved the recovery of viable cells after 72 hours of storage. Viable cell recovery was highly temperature-dependent, with an optimum temperature of 15°C. At this temperature, alginate encapsulation preserved the ability for recovered cells to attach to tissue culture plastic on rewarming, further increasing its effect on total cell recovery. On attachment, the cells were phenotypically normal, displayed normal growth kinetics, and maintained their capacity for trilineage differentiation. The number of cells encapsulated (up to 2 × 10(6) cells per milliliter) did not affect viable cell recovery nor did storage of encapsulated cells in a xeno-free, serum-free,current Good Manufacturing Practice-grade medium. We present a simple, low-cost system capable of enhancing the preservation of human adipose-derived stem cells stored at hypot...Continue Reading

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Citations

Jul 15, 2016·Expert Opinion on Biological Therapy·Stephen Swioklo, Che J Connon
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Nov 18, 2017·ACS Applied Materials & Interfaces·Martina MiottoChe J Connon

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