Molecular cloning and expression analysis of scd1 gene from large yellow croaker Larimichthys crocea under cold stress

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	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
刊名	GENE
	2015
卷号	568 期号:1 页码:100-108
关键词	Cold challenge Stearoyl-CoA desaturase (SCD) Larimichthys crocea
通讯作者	zywang@jmu.edu.cn
中文摘要	Desaturation 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.
学科主题	Genetics & Heredity
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/14932]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 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,&Wang, Zhi Yong.(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.