Reference: Izawa S, et al. (2007) Msn2p/Msn4p-activation is essential for the recovery from freezing stress in yeast. Biochem Biophys Res Commun 352(3):750-5

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Abstract


Since it seems quite difficult for frozen cells to repair the damage caused by freezing, the adequate responses appear to be induced during and/or after the thawing process to recover from the damage due to freezing. In this study, the cellular events happening upon the return from freezing at -30 degrees C to a growth temperature (28 degrees C) were investigated. Yap1p, an oxidative stress-responsive transcription factor, was not activated in the thawed cells, indicating that no serious oxidative stress was generated in the frozen-thawed cells. On the other hand, Msn2p and Msn4p, general stress-responsive transcription factors, were activated in the thawed cells and caused the increased expression of a number of Msn2p/Msn4p-target genes including SOD1, SOD2, and several HSP genes. Since almost no expression of Msn2p/Msn4p-target genes was induced before thawing, these results indicate that Msn2p and Msn4p play a role during the recovery process from freezing.

Reference Type
Journal Article
Authors
Izawa S, Ikeda K, Ohdate T, Inoue Y
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