Journal
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
Volume 41, Issue 4, Pages 498-504Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dci.2013.07.009
Keywords
Apostichopus japonicus; Myeloid differentiation factor 88; Tumor necrosis factor receptor-associated factor 6; Vibrio splendidus; Immune response
Categories
Funding
- NSFC [31101919, 41276120]
- Spark Program of state ministry [2011GA701019]
- Natural Science Foundation of Ningbo [2011A61003, 2011C11001]
- Outstanding (Postgraduate) Dissertation Growth Foundation of Ningbo University [PY2012005]
- Ningbo University
Ask authors/readers for more resources
Myeloid differentiation factor 88 (MyD88) and tumor necrosis factor receptor-associated factor 6 (TRAF6) are two key adaptor molecules in Toll-like receptor signal transduction that triggers downstream cascades involved in innate immunity. Here we reported the isolation and characterization the full-length cDNAs of MyD88 and TRAF6 from sea cucumber Apostichopus japonicus (denoted as AjMyD88 and AjTRAF6, respectively). Both of two factors shared a remarkable high degree of structural conservation with their mammalian and Drosophila orthologs, such as a typical death domain (DD) and a conservative Toll/IL-1R (TIR) domain for the deduced amino acid of AjMyD88, a zinc finger of RING-type, two zinc fingers of TRAF-type, a coiled-coil region, and a MATH domain for that of AjTRAF6. Constitutive expression patterns were also observed in the two genes with different expression levels. AjMyD88 mRNA transcripts were higher expressed in intestine and respiratory trees, and AjTRAF6 were abundant in coelomocytes and tentacle. During Vibrio splendidus challenge experiment, the expression levels of two genes were increased significantly with larger amplitude and longer duration in AjTRAF6. The peak expression levels were detected at 6 h for AjMyD88 with 1.80-fold increase, and at 24 h for AjTRAF6 with 2.73-fold increase compared with that in the control group. All these results suggested that AjMyD88 and AjTRAF6 might be involved into immune response toward V. splendidus challenge. (C) 2013 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available