[Studies on the application of antifreeze proteins in cryopreservation of rice suspension cells].
AFP from winter flounder was utilized in cryopreservation of plant cells. During cryopreservation of rice suspension cells by two-step method, AFP at 0.01 mg/ml damaged the cells extremely. The data obtained at relatively high concentration, however, decreased the variability of survival rate. During vitrification of rice cells, AFP at 0.2 mg/ml enhanced the viability. However, high concentration AFP (> 5 mg/ml) decreased the recovery rate. Studies indicated that the results of application of AFP in cryopreservation were closely related to the concentration of cryoprotectant. The amount of ice crystal in environment, the concentration of AFP and cryoprotectant, and the composition of plasma membrane were several key factors affecting the results of AFP application. In mechanism analysis, the authors suggested that on one hand AFP can interact with ice crystal, which inhibits ice recrystallization and prevent the cells from devitrification. On the other hand, AFP also can interact with cell membrane, resulting in the ice growth around the plasma membrane.
Wang
J H
JH
College of Life Science, Hangzhou University, Hangzhou 310012.
Bian
H W
HW
Huang
C N
CN
Ge
J G
JG
D021301:Antifreeze Proteins / Q000494:pharmacology*; D002470:Cell Survival / Q000187:drug effects; D015925:Cryopreservation / Q000379:methods*; D003451:Cryoprotective Agents / Q000494:pharmacology*; D003460:Crystallization; D004305:Dose-Response Relationship, Drug; D012275:Oryza / Q000166:cytology* / Q000187:drug effects
D021301:Antifreeze Proteins; D003451:Cryoprotective Agents