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Int. J. Mol. Sci. 2015, 16(5), 10997-11012; doi:10.3390/ijms160510997

Molecular Cloning and Functional Characterization of Mannose Receptor in Zebra Fish (Danio rerio) during Infection with Aeromonas sobria

1
Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
2
Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, China
3
Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Wuhan 430070, China
4
Agricultural Bioinformatics Key Laboratory of Hubei Province, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Jun Li
Received: 8 March 2015 / Revised: 27 April 2015 / Accepted: 8 May 2015 / Published: 15 May 2015
(This article belongs to the Special Issue Fish Molecular Biology)
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Abstract

Mannose receptor (MR) is a member of pattern-recognition receptors (PRRs), which plays a significant role in immunity responses. Much work on MR has been done in mammals and birds while little in fish. In this report, a MR gene (designated as zfMR) was cloned from zebra fish (Danio rerio), which is an attractive model for the studies of animal diseases. The full-length cDNA of zfMR contains 6248 bp encoding a putative protein of 1428 amino acids. The predicted amino acid sequences showed that zfMR contained a cysteine-rich domain, a single fibronectin type II (FN II) domain, eight C-type lectin-like domains (CTLDs), a transmembrane domain and a short C-terminal cytoplasmic domain, sharing highly conserved structures with MRs from the other species. The MR mRNA could be detected in all examined tissues with highest level in kidney. The temporal expression patterns of MR, IL-1β and TNF-α mRNAs were analyzed in the liver, spleen, kidney and intestine post of infection with Aeromonas sobria. By immunohistochemistry assay, slight enhancement of MR protein was also observed in the spleen and intestine of the infected zebra fish. The established zebra fish-A. sobria infection model will be valuable for elucidating the role of MR in fish immune responses to infection. View Full-Text
Keywords: Danio rerio; mannose receptor; mRNA expression; protein expression; Aeromonas sobria Danio rerio; mannose receptor; mRNA expression; protein expression; Aeromonas sobria
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zheng, F.; Asim, M.; Lan, J.; Zhao, L.; Wei, S.; Chen, N.; Liu, X.; Zhou, Y.; Lin, L. Molecular Cloning and Functional Characterization of Mannose Receptor in Zebra Fish (Danio rerio) during Infection with Aeromonas sobria. Int. J. Mol. Sci. 2015, 16, 10997-11012.

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