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Molecular cloning and expression analysis of scd1 gene from large yellow croaker Larimichthys crocea under cold stress
Xu, Hao; Zhang, Dong Ling; Yu, Da Hui; Lv, Chang Huan; Luo, Hui Yu; Wang, Zhi Yong; zywang@jmu.edu.cn
2015
Source PublicationGENE
Volume568Issue:1Pages:100-108
AbstractDesaturation of fatty acids is an important adaptation mechanism to maintain membrane fluidity under cold stress. To comprehend the mechanism of adaptation to low temperatures in fish, we investigated stearoyl-CoA desaturase 1 (SCD1) endocrine expression in the process of cold acclimation from 15 degrees C to 7 degrees C in Larimichthys crocea. The cDNA and genomic sequences of scd1 were cloned and characterized and named as Lcscd1. The cDNA encoded an iron-containing protein of 337 amino acids with functional motifs. The full-length genome sequence of Lcscd1 was composed of 2556 nucleotides, including five exons and four introns. Tissue expression profiles by qPCR and western blot analysis revealed that Lcscd1 was highly expressed in the liver, followed by the brain. The expression of Lcscd1 mRNA in the liver was firstly down-regulated from 15 degrees C to 11 degrees C, and then up-regulated until the first day of 7 degrees C, followed by a decline until the last day. In the brain, the expression showed no significant change from 15 degrees C to 9 degrees C, but then significantly increased until the last day of 7 degrees C. SCD1 protein expression in the liver decreased from 15 degrees C to the first day of 7 degrees C, and then gradually recovered to the starting level. In the brain, SCD1 protein expression maintained rising trends in the whole process. Immunoelectron microscopic analysis showed that SCD1 was localized in fat granules, mitochondria and granular endoplasmic reticulum of hepatic cells, but only in mitochondria of encephalic cells. The results above suggested that SCD1 expression was responsive to both cold and starvation stresses in the liver, but only to cold stress in the brain. In conclusion, these findings suggested that SCD1 may be involved in fish adaptation to cold stress. (C) 2015 Elsevier B.V. All rights reserved.
Department[Xu, Hao; Zhang, Dong Ling; Lv, Chang Huan; Luo, Hui Yu; Wang, Zhi Yong] Jimei Univ, Coll Fisheries, Minist Agr, Key Lab Hlth Mariculture East China Sea, Xiamen 361021, Fujian Province, Peoples R China; [Yu, Da Hui] Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Minist Agr, Key Lab South China Sea Fishery Resources Exploit, Guangzhou 510300, Guangdong, Peoples R China ; LTO
KeywordCold Challenge Stearoyl-coa Desaturase (Scd) Larimichthys Crocea
Subject AreaGenetics & Heredity
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/14932
Collection热带海洋环境国家重点实验室(LTO)
Corresponding Authorzywang@jmu.edu.cn
Recommended Citation
GB/T 7714
Xu, Hao,Zhang, Dong Ling,Yu, Da Hui,et al. Molecular cloning and expression analysis of scd1 gene from large yellow croaker Larimichthys crocea under cold stress[J]. GENE,2015,568(1):100-108.
APA Xu, Hao.,Zhang, Dong Ling.,Yu, Da Hui.,Lv, Chang Huan.,Luo, Hui Yu.,...&zywang@jmu.edu.cn.(2015).Molecular cloning and expression analysis of scd1 gene from large yellow croaker Larimichthys crocea under cold stress.GENE,568(1),100-108.
MLA Xu, Hao,et al."Molecular cloning and expression analysis of scd1 gene from large yellow croaker Larimichthys crocea under cold stress".GENE 568.1(2015):100-108.
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