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Cryoconservation des tissus de remplacement dermique obtenus par génie tissulaire dans du Me2SO : étude sur la toxicité et les effets de la concentration et les vitesses de refroidissement sur la viabilité des cellules.

Cryopreservation of tissue-engineered dermal replacement in Me2SO: toxicity study and effects of concentration and cooling rates on cell viability.

Auteurs : WANG X., HUA T. C., SUN D. W., et al.

Type d'article : Article

Résumé

Cryopreservation of tissue-engineered human dermal replacement plays an important role in skin tissue engineering and skin banking. With the inspection of electronic scanning microscope and viability evaluation by trypan blue staining assay and the tetrazolium salt, MTT (3-[4.5-dimethylthiazol-2-yl]-2.5-diphenyltetrazolium bromide) assay, this study investigated the toxicity of Me2SO to dermal fibroblasts and effects of cryoprotectant concentration and cooling rate on the viability of dermal replacement. The results demonstrated that the Me2SO toxicity to fibroblasts was affected by the exposure time, temperature, and concentration. Furthermore adding cryoprotectant solution at low temperature of 4°C significantly reduced the toxic effect on the tissue-engineered dermal equivalent. An optimal cryopreservation protocol consisting of cooling rate at 1°C/min in 10% (V/V) Me2SO was derived, with the viability of studied dermal equivalent treated by this protocol being 75% of that of fresh control. The micrograph obtained by electronic scanning microscope also confirmed this result. [Reprinted with permission from Elsevier. Copyright, 2007].

Détails

  • Titre original : Cryopreservation of tissue-engineered dermal replacement in Me2SO: toxicity study and effects of concentration and cooling rates on cell viability.
  • Identifiant de la fiche : 2008-0945
  • Langues : Anglais
  • Source : Cryobiology - vol. 55 - n. 1
  • Date d'édition : 08/2007

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