Genes and Genomics

The Genetics Society of Korea (한국유전학회)
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Molecular characterization and expression of suppressor of cytokine signaling (SOCS) 1, 2 and 3 under acute hypoxia and reoxygenation in pufferfish, Takifugu fasciatus

  • Wang, Dan (College of Life Sciences, College of Marine Sciences and Engineering, Nanjing Normal University) ;
  • Wen, Xin (College of Life Sciences, College of Marine Sciences and Engineering, Nanjing Normal University) ;
  • Zhang, Xinyu (College of Life Sciences, College of Marine Sciences and Engineering, Nanjing Normal University) ;
  • Hu, Yadong (College of Life Sciences, College of Marine Sciences and Engineering, Nanjing Normal University) ;
  • Li, Xinru (College of Life Sciences, College of Marine Sciences and Engineering, Nanjing Normal University) ;
  • Zhu, Wenxu (College of Life Sciences, College of Marine Sciences and Engineering, Nanjing Normal University) ;
  • Wang, Tao (College of Life Sciences, College of Marine Sciences and Engineering, Nanjing Normal University) ;
  • Yin, Shaowu (College of Life Sciences, College of Marine Sciences and Engineering, Nanjing Normal University)
  • Received : 2018.05.24
  • Accepted : 2018.07.08
  • Published : 2018.11.30
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Abstract

Hypoxia seriously affects the innate immune system of fish. However, the roles of suppressor of cytokine signaling (SOCS), pivotal anti-inflammatory genes, in response to hypoxia/reoxygenation remain largely unexplored. The primary objective of this study was to elucidate the function of SOCS genes under acute hypoxia and reoxygenation in pufferfish (Takifugu fasciatus). In the present study, SOCS1, 2 and 3 were identified in T. fasciatus referred to as TfSOCS1, 2 and 3. Then, qRT-PCR and western blot analysis were employed to assess their expressions at both the mRNA and protein levels. Tissue distribution demonstrated that the three SOCS genes were predominantly distributed in gill, brain and liver. Under hypoxia challenge ($1.63{\pm}0.2mg/L$ DO for 2, 4, 6 and 8 h), the expressions of TfSOCS1 and 3 in brain and liver at the mRNA and protein levels were significantly decreased, while their expressions showed an opposite trend in gill. Different from the expressions of TfSOCS1 and 3, the expression of TfSOCS2 was inhibited in gill, along with its increased expression in brain and liver. After normoxic recovery ($7.0{\pm}0.3mg/L$ of DO for 4 and 12 h), most of TfSOCS genes were significantly altered at R4 (reoxygenation for 4 h) and returned to the normal level at R12 (reoxygenation for 12 h). SOCS genes played vital roles in response to hypoxia/reoxygenation challenge. Our findings greatly strengthened the relation between innate immune and hypoxia stress in T. fasciatus.

Keywords

References

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