Granzyme G is expressed in the two-cell stage mouse embryo and is required for the maternal-zygotic transition

Tung Chou Tsai, William Lin, Shang Hsun Yang, Winston T.K. Cheng, En Hui Cheng, Maw Sheng Lee, Kowit Yu Chong, Chuan Mu Chen

研究成果: Article同行評審

24 引文 斯高帕斯(Scopus)

摘要

Background. Detailed knowledge of the molecular and cellular mechanisms that direct spatial and temporal gene expression in pre-implantation embryos is critical for understanding the control of the maternal-zygotic transition and cell differentiation in early embryonic development. In this study, twenty-three clones, expressed at different stages of early mouse development, were identified using differential display reverse transcription polymerase chain reaction (DDRT-PCR). One of these clones, which is expressed in 2-cell stage embryos at 48 hr post-hCG injection, shows a perfect sequence homology to the gene encoding the granzyme G protein. The granzyme family members are serine proteases that are present in the secretory granules of cytolytic T lymphocytes. However, the pattern of granzyme G expression and its function in early mouse embryos are entirely unknown. Results. Upon the introduction of an antisense morpholino (2 mM) against granzyme G to knock-down endogenous gene function, all embryos were arrested at the 2- to 4-cell stages of egg cleavage, and the de novo synthesis of zygotic RNAs was decreased. The embryonic survival rate was dramatically decreased at the late 2-cell stage when serine protease-specific inhibitors, 0.1 mM 3,4-dichloroisocoumarin (3,4-DCI), and 2 mM phenyl methanesulphonyl fluoride (PMSF), were added to the in vitro embryonic culture medium. Survival was not affected by the addition of 0.5 mM EDTA, a metalloproteinase inhibitor. Conclusion. We characterized for the first time the expression and function of granzyme G during early stage embryogenesis. Our data suggest that granzyme G is an important factor in early mouse embryonic development and may play a novel role in the elimination of maternal proteins and the triggering of zygotic gene expression during the maternal-zygotic transition.

原文English
文章編號88
期刊BMC Developmental Biology
10
DOIs
出版狀態Published - 2010

All Science Journal Classification (ASJC) codes

  • 發展生物學

指紋

深入研究「Granzyme G is expressed in the two-cell stage mouse embryo and is required for the maternal-zygotic transition」主題。共同形成了獨特的指紋。

引用此