Disruption of Zar1 leads to arrested oogenesis by regulating polyadenylation via Cpeb1 in tilapia (Oreochromis niloticus)
文献类型： 外文期刊
作者： Yu, Miao 1 ; Zhang, Shiyi 1 ; Ma, Zhisheng 1 ; Qiang, Jun 2 ; Wei, Jing 1 ; Sun, Lina 1 ; Kocher, Thomas D. 3 ; Wang, Deshou 1 ; Tao, Wenjing 1 ;
作者机构： 1.Southwest Univ, Sch Life Sci, Key Lab Aquat Sci Chongqing, Key Lab Freshwater Fish Reprod & Dev,Minist Educ,I, Chongqing 400715, Peoples R China
2.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Freshwater Fisheries & Germplasm Resources, Minist Agr, Wuxi, Peoples R China
3.Univ Maryland, Dept Biol, College Pk, MD 20742 USA
关键词： Zar1; Oogenesis; Polyadenylation
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.2； 五年影响因子：7.8 ）
ISSN： 0141-8130
年卷期： 2024 年 260 卷
页码：
收录情况： SCI
摘要： Oogenesis is a complex process regulated by precise coordination of multiple factors, including maternal genes. Zygote arrest 1 (zar1) has been identified as an ovary-specific maternal gene that is vital for oocyte-to-embryo transition and oogenesis in mouse and zebrafish. However, its function in other species remains to be elucidated. In the present study, zar1 was identified with conserved C -terminal zinc finger domains in Nile tilapia. zar1 was highly expressed in the ovary and specifically expressed in phase I and II oocytes. Disruption of zar1 led to the failed transition from oogonia to phase I oocytes, with somatic cell apoptosis. Down-regulation and failed polyadenylation of figla, gdf9, bmp15 and wee2 mRNAs were observed in the ovaries of zar1-/- fish. Cpeb1, a gene essential for polyadenylation that interacts with Zar1, was down-regulated in zar1-/- fish. Moreover, decreased levels of serum estrogen and increased levels of androgen were observed in zar1-/- fish. Taken together, zar1 seems to be essential for tilapia oogenesis by regulating polyadenylation and estrogen synthesis. Our study shows that Zar1 has different molecular functions during gonadal development by the similar signaling pathway in different species.
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