A new automated vial thawer controls the thawing of cryopreserved mesenchymal stem cells to achieve high cell viability and growth potential

Mitchell, Peter D.; Cheeseman, E. A.; Harriman, J.; Glen, Katie E.; McCall, Mark J.S.; Thomas, Robert J.

doi:10.1016/j.jcyt.2017.02.196

Cited by 1 publication

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“…Standard practice for cell recovery in cryovials is to encourage fast thawing utilizing a 37 • C water bath [23,24,35,40]. However, optimal heating rates within 96-well plates have yet to be defined.…”

Section: Discussionmentioning

confidence: 99%

“…Recently, in tandem with controlled rate freezers, controlled rate thawing has been applied to cryovials and cryobags when considering cells for use in therapies, although the accepted thawing rate is still high. While this has now been applied to testicular interstitial cells, pluripotent and mesenchymal stem cells [23,24] frozen in cryovials, there are no data on cryopreservation of MSC in a 96-well plate format. This could be used in developing cryosolutions or as a pre-prepared plate for toxicology testing or rapid distribution of cells.…”

Section: Introductionmentioning

confidence: 99%

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Cryopreservation of Mesenchymal Stem Cells Using Medical Grade Ice Nucleation Inducer

Wragg

Tampakis

Stolzing

2020

IJMS

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Mesenchymal stem cells (MSCs) can differentiate into multiple different tissue lineages and have favourable immunogenic potential making them an attractive prospect for regenerative medicine. As an essential part of the manufacturing process, preservation of these cells whilst maintaining potential is of critical importance. An uncontrolled area of storage remains the rate of change of temperature during freezing and thawing. Controlled-rate freezers attempted to rectify this; however, the change of phase from liquid to solid introduces two extreme phenomena; a rapid rise and a rapid fall in temperature in addition to the intended cooling rate (normally −1 °C/min) as a part of the supercooling event in cryopreservation. Nucleation events are well known to initiate the freezing transition although their active use in the form of ice nucleation devices (IND) are in their infancy in cryopreservation. This study sought to better understand the effects of ice nucleation and its active instigation with the use of an IND in both a standard cryotube with MSCs in suspension and a high-throughput adhered MSC 96-well plate set-up. A potential threshold nucleation temperature for best recovery of dental pulp MSCs may occur around −10 °C and for larger volume cell storage, IND and fast thaw creates the most stable process. For adhered cells, an IND with a slow thaw enables greatest metabolic activity post-thaw. This demonstrates a necessity for a medical grade IND to be used in future regenerative medicine manufacturing with the parameters discussed in this study to create stable products for clinical cellular therapies.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%