Molecular cloning and characterization of amh, dax1 and cyp19a1a genes and their response to 17 alpha-methyltestosterone in Pengze crucian carp
文献类型: 外文期刊
作者: Li, Meng 1 ; Wang, Lihong 2 ; Wang, Houpeng 1 ; Liang, Hongwei 3 ; Zheng, Yao 1 ; Qin, Fang 1 ; Liu, Shaozhen 1 ; Zhang, 1 ;
作者机构: 1.Northwest A&F Univ, Coll Anim Sci & Technol, Shaanxi Key Lab Mol Biol Agr, Yangling 712100, Shaanxi, Peoples R China
2.Hosp Northwest A&F Univ, Yangling 712100, Shaanxi, Peoples R China
3.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Hubei, Peoples R China
关键词: amh;cyp19a1a;dax1;Gynogenesis;Pengze crucian carp
期刊名称:COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY ( 影响因子:3.228; 五年影响因子:3.289 )
ISSN: 1532-0456
年卷期: 2013 年 157 卷 4 期
页码:
收录情况: SCI
摘要: The proteins encoded by amh, dax1 and cyp19a1a play important roles in gonad differentiation. Their functions have been far less studied in teleosts. In this study, the full-length cDNAs of amh, dax1 and cyp19a1a were cloned and characterized in a triploid gynogenic fish, the Pengze crucian carp. Their expression profilings in juvenile development, adult tissues and juveniles exposed to 100 ng/L 17 alpha-methyltestosterone (MT) were investigated. Results showed that their putative proteins shared high identities to their counterparts in cyprinid fish species, respectively. The tissue distribution results indicated that amh and cyp19a1a were predominantly expressed in the ovary and dax1 was dominantly expressed in the liver. Gene profiling in the developmental stages showed that all the three target genes had a consistent highest expression at 48 days post hatching (dph). The period of 48 dph appeared to be a key time during the process of the gonad development of Pengze crucian carp. 100 ng/L MT significantly increased the mRNA expression of amh at 2- and 4-week exposures and enhanced dax1 and cyp19a1a at 6-week exposure. The present study indicated that MT could influence the gonad development in Pengze crucian carp by disturbing sex-differentiation associated gene expression. Furthermore, the present study will be of great significance to broaden the understanding of molecular mechanisms of the physiological processes of reproduction in fish. (C) 2013 Elsevier Inc. All rights reserved.
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