Original Article Role of Hsp-70 responses in cold acclimation of HUVEC-12 cells

Hao Guan, Dahai Hu, Zhijing Zhao, Weixia Cai, Qin Zhou, Ximing Yang, Ying Yan, Xiongxiang Zhu
2015 Int J Clin Exp Med   unpublished
Endothelial recovery is a central feature of tissues after frostbite injuries. Thermo tolerance plays an important role in protecting cells against injury after frozen and thawing. The present study aimed to quantitatively assess the injury of human umbilical vein endothelial cells HUVEC-12 after repeated low temperature. Material and method: Pretreatments (HUVEC-12) cells were repeatedly exposed to cold (1°C/min decrement to-20°C). Their proliferation, death, apoptosis, and protein and mRNA
more » ... protein and mRNA expressions of HSP70 were determined. Results: Endothelial cells after repeated cold exposures were more resistant to apoptosis and necrosis than normal cells. The expressions of HSP70 in cells after repeated cold exposures were significantly higher than in normal HUVEC-12 cells (P < 0.05). Conclusion: Cold acclimation may induce the expression of HSP-70 which plays a protective role in the temperature tolerance.