Delivery of high cell mass in a syringe and related methods...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 1/04 (2006.01) A01N 1/02 (2006.01) C12M 1/26 (2006.01) C12N 1/00 (2006.01) C12P 1/00 (2006.01)

Patent

CA 2574328

This invention relates to methods and apparatus for cryopreserving biological materials for extended periods of time. In an exemplary embodiment, the method comprises suspending biological materials in a cryosolution, freezing the biological materials in the apparatus, and removing the frozen biological materials from the apparatus to thaw them for use. In another embodiment, a cell cryopreservation solution is provided which includes 20% Dimethyl Sulfoxide (DMSO) to maintain the viability of cells upon freezing, storage, and thawing. The media can be used for cryopreservation of a wide variety of different cell types from various sources. In addition, an apparatus that facilitates the storage of cells and the subsequent removal of the cells for thawing to permit substantially direct inoculation of a bioreactor is disclosed. Cells frozen using a method according to the present disclosure have been shown to have approximately a 90% survival rate, which is significantly higher than other cryopreservation methods.

Cette invention concerne des procédés et un appareil pour cryoconserver des matériaux biologiques sur de longues périodes de temps. Dans un mode de réalisation exemplaire, le procédé comprend la mise en suspension des matériaux biologiques dans une solution de cryoconservation, le refroidissement des matériaux biologiques dans l~appareil, et l~élimination des matériaux biologiques gelés de l~appareil pour les décongeler en vue de les utiliser. Dans un autre mode de réalisation, une solution de cryoconservation des cellules est fournie et comprend 20 % de Diméthylsulfoxyde (DMSO) pour maintenir la viabilité des cellules lors de la congélation, du stockage et de la décongélation. Le milieu peut être utilisé pour la cryoconservation d~un grand nombre de différents types de cellules provenant de diverses origines. De plus, l~invention décrit un appareil qui facilite le stockage des cellules et l~élimination subséquente des cellules lors de la décongélation pour permettre l'inoculation sensiblement directe d'un bioréacteur. Des cellules congelées en utilisant un procédé suivant la présente description ont montré un taux de survie d'environ 90 %, ce qui est significativement plus élevé que les autres procédés de cryoconservation.

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