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  3. Inhibition of neddylation disturbs zygotic genome activation through histone modification change and leads to early development arrest in mouse embryos

Inhibition of neddylation disturbs zygotic genome activation through histone modification change and leads to early development arrest in mouse embryos

  • Biochim Biophys Acta Mol Basis Dis. 2024 Jun 11;1870(7):167292. doi: 10.1016/j.bbadis.2024.167292.
Guangping Yang 1,  Yingnan Wang 2,  Saifei Hu 2,  Jianhua Chen 2,  Liangliang Chen 2,  Hui Miao 3,  Na Li 3,  Hui Luo 2,  Yanni He 2,  Yun Qian 4,  Congxiu Miao 5,  Ruizhi Feng 6
Affiliations

Affiliations

  • 1 State Key Laboratory of Reproduction Medicine and Offspring Health, Nanjing Medical University, Nanjing, Jiangsu 210029, China; Yangzhou Maternal and Child Health Care Hospital Affiliated to Yangzhou University, China.
  • 2 State Key Laboratory of Reproduction Medicine and Offspring Health, Nanjing Medical University, Nanjing, Jiangsu 210029, China.
  • 3 Department of Reproductive Genetics, Heping Hospital of Changzhi Medical College, Key Laboratory of Reproduction Engineer of Shanxi Health Committee, Changzhi, Shanxi 046000, China.
  • 4 Clinical Center of Reproductive Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210008, China.
  • 5 Department of Reproductive Genetics, Heping Hospital of Changzhi Medical College, Key Laboratory of Reproduction Engineer of Shanxi Health Committee, Changzhi, Shanxi 046000, China. Electronic address: mcxms@163.com.
  • 6 State Key Laboratory of Reproduction Medicine and Offspring Health, Nanjing Medical University, Nanjing, Jiangsu 210029, China; Clinical Center of Reproductive Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210008, China; Innovation Center of Suzhou Nanjing Medical University, Suzhou, Jiangsu 215005, China. Electronic address: ruizhifeng@njmu.edu.cn.
PMID: 38871031 DOI: 10.1016/j.bbadis.2024.167292
Abstract

Post-translational modification and fine-tuned protein turnover are of great importance in mammalian early embryo development. Apart from the classic protein degradation promoting ubiquitination, new forms of ubiquitination-like modification are yet to be fully understood. Here, we demonstrate the function and potential mechanisms of one ubiquitination-like modification, neddylation, in mouse preimplantation embryo development. Treated with specific inhibitors, zygotes showed a dramatically decreased cleavage rate and almost all failed to enter the 4-cell stage. Transcriptional profiling showed genes were differentially expressed in pathways involving cell fate determination and cell differentiation, including several down-regulated zygotic genome activation (ZGA) marker genes. A decreased level of phosphorylated RNA polymerase II was detected, indicating impaired gene transcription inside the embryo cell nucleus. Proteomic data showed that differentially expressed proteins were enriched in histone modifications. We confirmed the lowered in methyltransferase (KMT2D) expression and a decrease in histone H3K4me3. At the same time, acetyltransferase (CBP/p300) reduced, while deacetylase (HDAC6) increased, resulting in an attenuation in histone H3K27ac. Additionally, we observed the up-regulation in YAP1 and RPL13 activities, indicating potential abnormalities in the downstream response of Hippo signaling pathway. In summary, we found that inhibition of neddylation induced epigenetic changes in early embryos and led to abnormalities in related downstream signaling pathways. This study sheds LIGHT upon new forms of ubiquitination regulating mammalian embryonic development and may contribute to further investigation of female infertility pathology.

Keywords

Early embryonic development; Histone modification; MLN4924; Neddylation; TAS4464; Zygotic genome activation.

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