Essential role of the Cytochrome P450 2 (CYP2) in the mud crab Scylla paramamosain antioxidant defense and immune responses.

Cytochrome P450 (CYPs) enzymes are one of the critical detoxification enzymes, playing a key role in antioxidant defense. However, the information of CYPs cDNA sequences and their functions are lacked in crustaceans. In this study, a novel full-length of CYP2 from the mud crab (designated as Sp-CYP2) was cloned and characterized. The coding sequence of Sp-CYP2 was 1479 bp in length and encoded a protein containing 492 amino acids. The amino acid sequence of Sp-CYP2 comprised a conserved heme binding site and chemical substrate binding site. Quantitative real-time PCR analysis revealed that Sp-CYP2 was ubiquitously expressed in various tissues, and it was highest in the heart followed by the hepatopancreas. Subcellular localization showed that Sp-CYP2 was prominently located in the cytoplasm and nucleus. The expression of Sp-CYP2 was induced by Vibrio parahaemolyticus infection and ammonia exposure. During ammonia exposure, ammonia exposure can induce oxidative stress and cause severely tissue damage. Knocking down Sp-CYP2 in vivo can increase malondialdehyde content and the mortality of mud crabs after ammonia exposure. All these results suggested that Sp-CYP2 played a crucial role in the defense against environmental stress and pathogen infection in crustaceans.

• Publication year

  2023

• Venue

  Fish and Shellfish Immunology

• Publication date

  2023-03-01

• Fields of study

  Biology, Medicine, Environmental Science

• Identifiers
  DOI 10.1016/j.fsi.2023.108674PMID 36933585
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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