Role of StAR Gene in Sex Steroid Hormone Regulation and Gonadal Development in Ark Shell Scapharca broughtonii
文献类型： 外文期刊
作者： Wang, Wenjing 1 ; Liu, Zhihong 1 ; Zhang, Huaying 3 ; Gao, Zheying 4 ; Xia, Sudong 5 ; Sun, Xiujun 1 ; Zhou, Liqing 1 ; Li, Zhuanzhuan 1 ; Ma, Peizhen 1 ; Wu, Biao 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, State Key Lab Mariculture Biobreeding & Sustainabl, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao 266237, Peoples R China
3.Tianjin Agr Dev Serv Ctr, Tianjin 300061, Peoples R China
4.Tianjin Binhai New Area Agr & Rural Dev Serv Ctr, Tianjin 300452, Peoples R China
5.Tianjin Agr Univ, Dept Fishery Sci, Tianjin Key Lab Aqua Ecol & Aquaculture, Tianjin 300384, Peoples R China
关键词：
期刊名称：BIOLOGY-BASEL （ 影响因子：3.5； 五年影响因子：4.0 ）
ISSN：
年卷期： 2025 年 14 卷 8 期
页码：
收录情况： SCI
摘要： This study elucidates the role of the steroidogenic acute regulatory protein (StAR) in sex steroid hormone dynamics and the gonadal development of the commercially important marine bivalve ark shell Scapharca broughtonii. The sequence of the StAR gene was obtained and verified from the transcriptome of ark shell, then the tissue localization and expression pattern during the gonad development of the StAR gene were detected by in situ hybridization and quantitative real-time PCR, respectively. Additionally, the concentrations of three critical sex steroid hormones (progesterone, testosterone, and estradiol) were measured throughout gonadal development using enzyme-linked immunosorbent assay (ELISA). The results showed that the length of the coding region of StAR was 1446 bp, encoding 481 amino acids. The results of qRT-PCR showed that the expression of the StAR gene varied with gonadal development, increased from the early active stage to the development stage, and decreased from the mature stage to the spent stage. Notably, the expression level in ovaries was higher than that in testes, suggesting the potential involvement of StAR in sex differentiation and gonadal development. Additionally, the results indicated that progesterone, testosterone, and estradiol accounted for 80%, 10%, and 10% of the total hormone content in the gonads, respectively. Correlation analysis revealed a highly significant strong positive correlation between progesterone/estradiol levels and StAR gene expression, demonstrating that StAR serves as a key regulator in sex steroid hormone biosynthesis. These findings provide crucial molecular evidence for StAR-mediated steroidogenesis in bivalve reproduction, offering fundamental insights into invertebrate endocrinology.
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