Whole-Genome Identification and Characterization of the DKK Gene Family and Its Transcription Profiles: An Analysis of the Chinese Soft-Shell Turtle (Pelodiscus sinensis)
文献类型： 外文期刊
作者： Wang, Yongchang 1 ; Zhu, Junxian 1 ; Chen, Chen 1 ; Ji, Liqin 1 ; Hong, Xiaoyou 1 ; Liu, Xiaoli 1 ; Chen, Haigang 1 ; Wei, Chengqing 1 ; Zhang, Junjie 2 ; Zhu, Xinping 1 ; Li, Wei 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Key Lab Trop & Subtrop Fishery Resource Applicat &, Minist Agr & Rural Affairs, Guangzhou 510380, Peoples R China
2.Xinjiang Agr Univ, Coll Life Sci, Urumqi 830052, Peoples R China
关键词： DKK gene family; Pelodiscus sinensis; expression analyses; sex differentiation
期刊名称：ANIMALS （ 影响因子：3.0； 五年影响因子：3.2 ）
ISSN： 2076-2615
年卷期： 2024 年 14 卷 6 期
页码：
收录情况： SCI
摘要： The DKK family is a canonical small family of WNT antagonists. Though recent studies have suggested that the DKK gene family may be involved in sex differentiation in Pelodiscus sinensis, there are still a lot of things about the DKK gene family that we do not know. In this study, we used bioinformatics methods to identify members of the DKK gene family in P. sinensis and analyzed their phylogeny, covariance, gene structure, structural domains, promoter conserved sites, signal peptides, gonadal transcription factors, transcriptional profiles, and tissue expression profiles. Additionally, qRT-PCR results were utilized for the validation and preliminary investigation of the function of the DKK gene family in P. sinensis. The results showed that the DKK gene family is divided into six subfamilies, distributed on six different chromosomal scaffolds containing different gene structures and conserved motifs with the same structural domains, and all of the members were secreted proteins. Our transcriptional profiling and embryonic expression analysis showed that DKKL1 and DKK4 were significantly expressed in the testes, whereas DKK1 and DKK3 were significantly upregulated in the ovaries. This suggests a potential function in sex differentiation in P. sinensis. Our results may provide a basic theoretical basis for the sex differentiation process in P. sinensis.
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