Artif Cells Nanomed Biotechnol
May 2017
Post cryopreservation viability of human embryonic kidney (HEK) cells under two-dimensional (2D) and three-dimensional (3D) culture conditions was studied using trehalose as the sole cryoprotective agent. An L (3) Taguchi design was used to optimize the cryoprotection cocktail seeding process prior to slow-freezing with the specific aim of maximizing cell viability measured 7 days post thaw, using the combinatorial cell viability and in-vitro cytotoxicity WST assay. At low (200 mM) and medium (800 mM) levels of trehalose concentration, encapsulation in alginate offered a greater protection to cryopreservation.
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