Journal
JOURNAL OF THERMAL BIOLOGY
Volume 71, Issue -, Pages 128-135Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jtherbio.2017.11.004
Keywords
Takifugu obscurus; Vitamin C; Comparative proteomics; Cold stress
Funding
- Special Funds for Fish Diseases of Guangdong province [2015-352, 2016-302]
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The aim of this study was to investigate the protective effects of vitamin C on apoptosis, DNA damage and proteome of pufferfish under low temperature stress. Six diets were formulated to contain 2.60, 48.90, 95.50, 189.83, 382.40, 779.53 mg/kg vitamin C. After 8-week feeding trial, fish were exposed to low temperature challenge. The results showed that pufferfish receiving vitamin C diet exhibited a significant decrease in ROS production (48.9-189.83 mg/kg vitamin C diet groups), cytoplasmic free-Ca2+ concentration (48.9-779.53 mg/kg vitamin C diet groups), apoptotic cell ratio (95.5-779.53 mg/kg vitamin C diet groups) and DNA damage (189.83-779.53 mg/kg vitamin C diet groups) under low temperature stress in comparison with those of control. We also investigated the alteration in protein expression under low temperature stress by a comparative proteomic analysis. The results demonstrated that 24 protein spots showed significantly differential expression in the cold-stress-treated group compared with those of the control group, and 5 protein spots were successfully identified. Furthermore, comparative proteomic analysis revealed that vitamin C could increase expressed proteins related to energy metabolism, immune-responses and cytoskeleton. These findings would be helpful to understand the protective effects of vitamin C against cold stress.
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