Allograft inflammatory factor-1 in disk abalone (Haliotis discus discus): Molecular cloning, transcriptional regulation against immune challenge and tissue injury

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• 作者：Mahanama De Zoysa ; Chamilani Nikapitiya ; Yucheol Kim ; Chulhong Oh ; Do-Hyung Kang ; Ilson Whang ; Se-Jae Kim ; Jae-Seong Lee ; Cheol Young Choi ; Jehee Lee
• 关键词：Abalone Haliotis discus discus ; Allograft inflammatory factor-1 ; Invertebrate ; Hemocytes ; Tissue injury
• 刊名：Fish & Shellfish Immunology
• 出版年：2010
• 出版时间：August 2010
• 年：2010
• 卷：29
• 期：2
• 页码：319-326
• 全文大小：1344 K

文摘

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.