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中国农学通报 ›› 2026, Vol. 42 ›› Issue (20): 133-138.doi: 10.11924/j.issn.1000-6850.casb2025-0944

• 畜牧·动物医学·蚕·蜂 • 上一篇    下一篇

激活转录因子ATF4对猪早期胚胎发育的影响

张立苹(), 周昌繁, 曾威()   

  1. 湖北省农业科学院畜牧兽医研究所/动物胚胎工程及分子育种湖北省重点实验室, 武汉 430070
  • 收稿日期:2025-11-25 修回日期:2026-05-07 出版日期:2026-10-25 发布日期:2026-10-26
  • 通讯作者:
    曾威,男,1994年出生,湖北武汉人,助理研究员,博士,研究方向:猪抗病育种。通信地址:430070 湖北省武汉市洪山区南湖瑶苑特4号 省农科院生物楼412室,Tel:027-87380647,E-mail:。
  • 作者简介:

    张立苹,女,1982年出生,河北邢台人,副研究员,硕士,研究方向:动物遗传育种。通信地址:430070 湖北省武汉市洪山区南湖瑶苑特4号 省农科院畜牧所104室,Tel:027-87380647,E-mail:。

  • 基金资助:
    湖北省科技厅“中央引导地方科技发展专项”(2025EIA014); 湖北省科技厅“科技计划项目”(2025BBB015); 湖北省科技厅“自然科学基金创新群体项目”(2024AFA027); 湖北省科技厅“重点研发计划专项(援疆援藏项目)”(2025EIA058); 湖北省科技厅“农业关键核心技术攻关项目”(HBNYHXGG2025-7)

Effects of Activating Transcription Factor 4 (ATF4) on Porcine Early Embryonic Development

ZHANG Liping(), ZHOU Changfan, ZENG Wei()   

  1. Key Laboratory of Animal Embryo Engineering and Molecular Breeding of Hubei Province/ Institute of Animal Sciences and Veterinary Medicine, Hubei Academy of Agricultural Sciences, Wuhan 430070
  • Received:2025-11-25 Revised:2026-05-07 Published:2026-10-25 Online:2026-10-26

摘要:

本研究旨在深入阐明激活转录因子ATF4在猪早期胚胎发育中的关键作用,为揭示ATF4调控猪早期胚胎发育的分子机制提供理论基础。本实验通过实时荧光定量PCR测定猪早期胚胎在不同发育时期的ATF4表达水平,进一步利用显微注射的方法,分别将ATF4 mRNA和ATF4 siRNA注射至猪孤雌激活胚胎的细胞质中,通过监测胚胎发育率分析ATF4对猪早期胚胎发育的影响。结果发现:ATF4在猪早期胚胎的不同发育时期呈先上升后下降的表达趋势,8cell期达到高峰;孤雌激活4~5 h后,向胚胎细胞质内注射10 pL(500 ng/μL) 的ATF4 mRNA可显著促进猪早期胚胎的发育;注射10 pL(20 μM)的ATF4-siRNA显著降低胚胎发育率。研究结果表明,ATF4可有效缓解猪早期胚胎发育阻滞,并促进胚胎的正常发育。

关键词: ATF4, 猪, 胚胎, 发育阻滞

Abstract:

This study aims to deeply elucidate the key effect of ATF4 on porcine early embryonic development, laying a theoretical foundation for further exploring the underlying molecular mechanisms. In this study, quantitative real-time PCR (qRT-PCR) was performed to quantify ATF4 expression during different stages of porcine parthenogenetic embryo. Furthermore, ATF4 mRNA and ATF4 siRNA were microinjected into the cytoplasm of porcine parthenogenetic embryos, and the effect of ATF4 on porcine early embryonic development was subsequently analyzed by evaluating the embryo development rate. The results indicated that ATF4 expression showed a trend of initially increase followed by a decline across different stages of porcine early embryonic development, with the highest expression level at the 8-cell stage. Cytoplasmic microinjection of 10 pL of 500 ng/μL ATF4 mRNA at 4-5 h post-activation significantly promoted the development of porcine early embryos. Whereas injection of 10 pL of 20 μM ATF4 siRNA suppressed the embryonic development rate. These results indicate that ATF4 effectively alleviate the developmental arrest and promote embryonic development.

Key words: ATF4, pig, embryo, developmental arrest

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