Molecular cloning, expression, and functional analysis of caspase-10 from Japanese flounder Paralichthys olivaceus

Tomofumi Kurobe, Ikuo Hirono, Hidehiro Kondo, Michiaki Yamashita, Takashi Aoki

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

We isolated and sequenced caspase-10 cDNA and gene from Japanese flounder, Paralichthys olivaceus. The Japanese flounder (JF)-caspase-10 cDNA consisted of 2282 bp and encoded 495 amino acid residues. The characteristic death effector domains (DEDs) of caspases were observed in JF-caspase-10 as well as the three aspartic acid residues (D-186, -382 and -392), which are potential cleavage sites for the large and small subunit structures. The amino acid residue (His-325) and pentapeptide (QACQG), which are involved in catalytic activity, were absolutely conserved in Japanese flounder-caspase-10. JF-caspase-10 gene has a length of 6.6 kb and consists of 11 exons and 10 introns similar to that of human. The strong expression of JF-caspase-10 mRNA was detected in the gills, peripheral blood leukocytes, spleen and posterior kidney, while the weak expression was observed in the head kidney, heart, intestine, skin and stomach. The over-expression analysis of JF-caspase-10 in Japanese flounder cell line HINAE was shown to induce apoptosis 24 h post-transfection using TUNEL assay.

Original languageEnglish (US)
Pages (from-to)1266-1274
Number of pages9
JournalFish and Shellfish Immunology
Volume23
Issue number6
DOIs
StatePublished - Dec 1 2007
Externally publishedYes

Keywords

  • Caspase-10
  • Gene cloning
  • Japanese flounder (Paralichthys olivaceus)
  • Over-expression analysis
  • RT-PCR
  • TUNEL assay

ASJC Scopus subject areas

  • Environmental Chemistry
  • Aquatic Science

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