黔北麻羊SRD5A2基因干扰载体构建及其对产羔相关基因表达的影响

doi:10.11843/j.issn.0366-6964.2020.12.008

Abstract

Abstract: The purpose of this study was to investigate the effect of SRD5A2 gene on the expression of genes related to goat lambing traits. In this study, 3 healthy (2-3 years old) and female Qianbei Ma goat with a weight of approximate 32 kg were selected. Ovary tissue was collected and granulosa cells were successfully cultured. Four pairs of siRNA interference sequence of SRD5A2 gene sequence and a pair of negative control sequence were designed by online software. After connecting pGPH1/GFP/Neo vector, the constructed interference vectors were transfected into ovarian granulosa cells of Qianbei Ma goats. The interference vector with optimal interference efficiency was screened by qRT-PCR, and its effect on the expression of SRD5A2 gene was detected. The effects of silencing SRD5A2 gene on the expression of bone morphogenetic protein 15 (BMP15), growth differentiation factor 9 (GDF9), bone morphogenetic protein-1B (BMPR-1B) and follicle-stimulating hormone lactin (FSHβ) were investigated. In this experiment, the interference vector of SRD5A2 gene was successfully constructed on the basis of cultivating ovarian granulosa cells of Qianbei Ma goats. shRNA-SRD5A2-1 interference vector with the optimal interference efficiency was screened out (P<0.01). After inhibiting SRD5A2 gene expression, the expression levels of BMP15, BMPR-1B, GDF9 and FSHβ were significantly reduced. The expression level of BMP15 was extremely significantly lower than that in shRNA-NC control group (P<0.01), and the expression levels of BMPR-1B, GDF9 and FSHβ were significantly lower than those in shRNA-NC control group (P<0.05). In this study, the constructed SRD5A2 gene interference vector was successfully transfected into ovarian granulosa cells. The silencing of SRD5A2 gene can inhibit the expression of genes related to lambing traits, which indicate that SRD5A2 gene is closely related to lambing traits of Qianbei Ma goats, the result will provide a basis for further studies on the regulatory mechanism of SRD5A2 gene on lambing traits in Qianbei Ma goats.

Key words: Qianbei Ma goat, SRD5A2 gene, RNA interference, ovarian granulosa cells, lambing trait

CLC Number:

S827.2

HONG Lei, CHEN Xiang, TANG Wen, ZHOU Zhinan, DUAN Zhiqiang, ZHAO Jiafu. Construction of SRD5A2 Gene Interference Vector and Its Effect on the Expression of Lambing Related Genes in Qianbei Ma Goats[J]. Acta Veterinaria et Zootechnica Sinica, 2020, 51(12): 2980-2990.

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Construction of SRD5A2 Gene Interference Vector and Its Effect on the Expression of Lambing Related Genes in Qianbei Ma Goats

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