Insulin-like growth factor 2 (IGF2) gene: molecular characterization, expression analysis and association of polymorphisms with egg production traits in goose (Anser cygnoides)
文献类型： 外文期刊
作者： Wang, Cui 1 ; Liu, Yi 1 ; Zhang, Yuting 1 ; Yang, Yunzhou 1 ; Wang, Xianze 1 ; Li, Guangquan 1 ; Wang, Huiying 1 ; Gong, Shaoming 1 ; Chen, Shufang 3 ; He, Daqian 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Inst Anim Husb & Vet Sci, 2901 Beidi Rd, Shanghai 201106, Peoples R China
2.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai, Peoples R China
3.NingBo Acad Agr Sci, Ningbo, Peoples R China
关键词： IGF2; cloning; expression profile; SNPs; egg production traits
期刊名称：ANIMAL BIOTECHNOLOGY （ 影响因子：2.141； 五年影响因子：1.92 ）
ISSN： 1049-5398
年卷期：
页码：
收录情况： SCI
摘要： Insulin-like growth factor 2 (IGF2) belongs to the member of the insulin-like growth factors family, which plays key roles in animal growth, differentiation and proliferation, as well as reproduction and the regulation of ovarian follicle development. However, little is known about the goose IGF2 gene. In this study, a 1879 bp fragment that covered the complete coding region (CDS) of goose IGF2 cDNA was identified for the first time. The cDNA consists of an open reading frame of 574 nucleotides with the capacity to encode a prepro-IGF-II protein of 187 amino acids, which comprises a signal peptide (24 residues), IGF-II peptide (67 residues), and C-terminal peptide (96 residues), and is closely related to that of chicken. qPCR indicates that the goose IGF2 mRNA is differentially expressed in all examined tissues of fertilized eggs (28 days) and laying Zhedong White geese (270 days). Two novel single nucleotide polymorphisms (SNPs) were detected in exon 1 (G63A, Chr2: G26541617A) and intron 1 (G38A, Chr2: G26541479A) regions, and the synonymous mutation G63A showed a significant association with egg numbers (E180d) of Sanhua goose population (p < 0.05). All the information derived from this study could be valuable and facilitate further studies on the functions of goose IGF2 gene.
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