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Iodothyronine deiodinase gene analysis of the Pacific oyster Crassostrea gigas reveals possible conservation of thyroid hormone feedback regulation mechanism in mollusks
Huang Wen1,2; Xu Fei1; Qu Tao1; Li Li1; Que Huayong1; Zhang Guofan1
2015-07-01
发表期刊CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
卷号33期号:4页码:997-1006
文章类型Article
摘要Iodothyronine deiodinase catalyzes the initiation and termination of thyroid hormones (THs) effects, and plays a central role in the regulation of thyroid hormone level in vertebrates. In non-chordate invertebrates, only one deiodinase has been identified in the scallop Chlamys farreri. Here, two deiodinases were cloned in the Pacific oyster Crassostrea gigas (CgDx and CgDy). The characteristic in-frame TGA codons and selenocysteine insertion sequence elements in the oyster deiodinase cDNAs supported the activity of them. Furthermore, seven orthologs of deiodinases were found by a tblastn search in the mollusk Lottia gigantea and the annelid Capitella teleta. A phylogenetic analysis revealed that the deiodinase gene originated from an common ancestor and a clade-specific gene duplication occurred independently during the differentiation of the mollusk, annelid, and vertebrate lineages. The distinct spatiotemporal expression patterns implied functional divergence of the two deiodinases. The expression of CgDx and CgDy was influenced by L-thyroxine T4, and putative thyroid hormone responsive elements were found in their promoters, which suggested that the oyster deiodinases were feedback regulated by TH. Epinephrine stimulated the expression level of CgDx and CgDy, suggesting an interaction effect between different hormones. This study provides the first evidence for the existence of a conserved TH feedback regulation mechanism in mollusks, providing insights into TH evolution.
关键词Iodothyronine Deiodinase Crassostrea Gigas Thyroid Hormone (Th) Clone Expression Analysis
DOI10.1007/s00343-015-4300-x
收录类别SCI
语种英语
WOS记录号WOS:000357037100021
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/33094
专题海洋生物技术研发中心
作者单位1.Chinese Acad Sci, Inst Oceanol, Natl & Local Joint Engn Lab Ecol Mariculture, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Huang Wen,Xu Fei,Qu Tao,et al. Iodothyronine deiodinase gene analysis of the Pacific oyster Crassostrea gigas reveals possible conservation of thyroid hormone feedback regulation mechanism in mollusks[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2015,33(4):997-1006.
APA Huang Wen,Xu Fei,Qu Tao,Li Li,Que Huayong,&Zhang Guofan.(2015).Iodothyronine deiodinase gene analysis of the Pacific oyster Crassostrea gigas reveals possible conservation of thyroid hormone feedback regulation mechanism in mollusks.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,33(4),997-1006.
MLA Huang Wen,et al."Iodothyronine deiodinase gene analysis of the Pacific oyster Crassostrea gigas reveals possible conservation of thyroid hormone feedback regulation mechanism in mollusks".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 33.4(2015):997-1006.
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