PUBLICATION

Comprehensive maturity of nuclear pore complexes regulates zygotic genome activation

Authors
Shen, W., Gong, B., Xing, C., Zhang, L., Sun, J., Chen, Y., Yang, C., Yan, L., Chen, L., Yao, L., Li, G., Deng, H., Wu, X., Meng, A.
ID
ZDB-PUB-221210-10
Date
2022
Source
Cell   185(26): 4954-4970.e20 (Journal)
Registered Authors
Gong, Bo, Meng, Anming, Xing, Cencan
Keywords
embryo, midblastula transition, nuclear pore complex, nuclei, transcription factor, zebrafish, zygotic genome activation
Datasets
GEO:GSE212933, GEO:GSE212929
MeSH Terms
  • Animals
  • Embryonic Development/genetics
  • Gene Expression Regulation, Developmental
  • Genome
  • Nuclear Pore*/metabolism
  • Nuclear Pore Complex Proteins/genetics
  • Nuclear Pore Complex Proteins/metabolism
  • Transcription Factors/metabolism
  • Zebrafish*/metabolism
  • Zygote/metabolism
PubMed
36493774 Full text @ Cell
Abstract
Nuclear pore complexes (NPCs) are channels for nucleocytoplasmic transport of proteins and RNAs. However, it remains unclear whether composition, structure, and permeability of NPCs dynamically change during the cleavage period of vertebrate embryos and affect embryonic development. Here, we report that the comprehensive NPC maturity (CNM) controls the onset of zygotic genome activation (ZGA) during zebrafish early embryogenesis. We show that more nucleoporin proteins are recruited to and assembled into NPCs with development, resulting in progressive increase of NPCs in size and complexity. Maternal transcription factors (TFs) transport into nuclei more efficiently with increasing CNM. Deficiency or dysfunction of Nup133 or Ahctf1/Elys impairs NPC assembly, maternal TFs nuclear transport, and ZGA onset, while nup133 overexpression promotes these processes. Therefore, CNM may act as a molecular timer for ZGA by controlling nuclear transport of maternal TFs that reach nuclear concentration thresholds at a given time to initiate ZGA.
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