生物技术进展 ›› 2023, Vol. 13 ›› Issue (4): 580-587.DOI: 10.19586/j.2095-2341.2023.0039

• 研究论文 • 上一篇    

敲除tp53对斑马鱼高温耐受能力和运动能力的影响

杨倩婷(), 田晓英, 张俊芳, 韩兵社()   

  1. 上海海洋大学水产与生命学院,水产种质资源发掘与利用教育部重点实验室,水产科学国家级实验教学示范中心,上海 201306
  • 收稿日期:2023-03-28 接受日期:2023-05-08 出版日期:2023-07-25 发布日期:2023-08-03
  • 通讯作者: 韩兵社
  • 作者简介:杨倩婷 E-mail: 1399081827@qq.com
  • 基金资助:
    国家自然科学基金项目(81770165);上海市科技兴农重点攻关项目(沪农科创字〔2019〕第1-2号);上海市教委水产一流学科建设项目

Effect of tp53 Knockout on High Temperature Tolerance and Swimming Capacity in Zebrafish

Qianting YANG(), Xiaoying TIAN, Junfang ZHANG, Bingshe HAN()   

  1. National Demonstration Center for Experimental Fisheries Science Education,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources,Ministry of Education,College of Fisheries and Life Science,Shanghai Ocean University,Shanghai 201306,China
  • Received:2023-03-28 Accepted:2023-05-08 Online:2023-07-25 Published:2023-08-03
  • Contact: Bingshe HAN

摘要:

研究了敲除tp53基因对斑马鱼高温耐受能力和运动能力的影响。通过RT-qPCR、Western blot等技术发现高温下野生型的斑马鱼tp53表达上调,暗示tp53可能在高温下发挥作用,而敲除tp53基因的斑马鱼在高温下的存活时间降低。进一步研究发现,tp53-/-斑马鱼在高温下ROS水平升高(P<0.05),ATP水平降低(P<0.001),γH2A.X蛋白水平显著升高。通过苏木精-伊红(hematoxylin-eosin,HE)染色发现tp53-/-斑马鱼高温下肝脏组织充血更严重。Danio Vision斑马鱼行为轨迹分析显示34 ℃下tp53-/-斑马鱼的运动能力减弱。研究结果表明,tp53在高温下对斑马鱼的高温耐受能力和运动能力起正向调节作用,为斑马鱼高温耐受机制和运动行为学研究提供了新思路。

关键词: 斑马鱼, 高温, tp53, 运动能力,

Abstract:

The aim of the study was to investigate the effect of tp53 knockout on high temperature tolerance and swimming capacity in zebrafish. Through RT-qPCR, Western blot and other technologies, it was found that the expression of tp53 in wild-type zebrafish at high temperature was upregulated, suggesting that tp53 may play a role at high temperature, while zebrafish with the tp53 gene knockout had a reduced survival time at high temperature. Further studies found that tp53-/- zebrafish had increased ROS levels (P<0.05), decreased ATP levels (P<0.001), and significantly increased levels of γH2A.X protein at high temperatures. It was found by hematoxylin-eosin(HE) staining that the liver tissue hyperemia of tp53-/- zebrafish was more severe at high temperatures. Danio Vision behavior trajectory analysis showed that tp53-/- zebrafish exercise capacity was weakened at 34 ℃. The results showed that tp53 has a positive effect on the high temperature tolerance and swimming capacity of zebrafish, which provided a new idea for the study of high temperature tolerance mechanism and exercise behavior in zebrafish.

Key words: zebrafish, high temperature, tp53, swimming capacity, liver

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