title: Allograft inflammatory factor-1 in disk abalone (Haliotis discus discus): molecular cloning, transcriptional regulation against immune challenge and tissue injury.
abstract: Here, we report the identification and characterization of allograft inflammatory factor-1 (AIF-1) from disk abalone Haliotis discus discus that was denoted as AbAIF-1. The full-length cDNA of AbAIF-1 consists of a coding region (453 bp) for 151 amino acids with a 17 kDa molecular mass. Analysis of AbAIF-1 sequence showed that it shares characteristic two EF hand Ca(+2)-binding motifs. Results from phylogenetic analysis further confirm that AbAIF-1 is a member of the AIF-1 family similar to invertebrate and vertebrate counterparts suggesting it has high evolutional conservation. Tissue-specific expression and transcriptional regulation of AbAIF-1 were analyzed after bacteria (Vibrio alginolyticus, Vibrio parahemolyticus and Lysteria monocytogenes), viral hemorrhagic septicemia virus (VHSV) immune challenge and during tissue injury by quantitative real-time PCR. It is shown that the expression of AbAIF-1 mRNA was expressed ubiquitously in all selected tissues in constitutive manner showing the highest level in hemocytes. Upon bacteria and VHSV challenge, AbAIF-1 showed the significant up-regulation in hemocytes than gills. After the tissue injury in shell and mantle, AbAIF-1 and antioxidant selenium-dependant glutathione peroxidase (SeGPx) transcripts were significantly upregulated in abalone hemocytes. Taken together, these findings suggest that AIF-1 could response against the pathogenic challenge or tissue injury in abalone like mollusks. Also, AbAIF-1 may involve in wound healing and shell repair after the tissue injury of abalone.
authors.affiliation: Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Special Self-Governing Province 690-756, Republic of Korea.
authors.forename: Mahanama
authors.initials: M
authors.lastname: De Zoysa
authors.forename: Chamilani
authors.initials: C
authors.lastname: Nikapitiya
authors.forename: Yucheol
authors.initials: Y
authors.lastname: Kim
authors.forename: Chulhong
authors.initials: C
authors.lastname: Oh
authors.forename: Do-Hyung
authors.initials: DH
authors.lastname: Kang
authors.forename: Ilson
authors.initials: I
authors.lastname: Whang
authors.forename: Se-Jae
authors.initials: SJ
authors.lastname: Kim
authors.forename: Jae-Seong
authors.initials: JS
authors.lastname: Lee
authors.forename: Cheol Young
authors.initials: CY
authors.lastname: Choi
authors.forename: Jehee
authors.initials: J
authors.lastname: Lee
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001419:Bacteria / Q000276:immunology; D001483:Base Sequence; D003001:Cloning, Molecular; D004268:DNA-Binding Proteins / Q000235:genetics* / Q000276:immunology*; D049851:Gastropoda / Q000235:genetics* / Q000276:immunology* / Q000382:microbiology / Q000821:virology; D005786:Gene Expression Regulation; D008969:Molecular Sequence Data; D029141:Novirhabdovirus / Q000276:immunology; D010802:Phylogeny; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid; D012689:Sequence Homology, Nucleic Acid
chemical_list: D004268:DNA-Binding Proteins