ArticleGenome biology2025
ZAR1 and ZAR2 orchestrate the dynamics of maternal mRNA polyadenylation during mouse oocyte development.
Article in Genome biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- CPEB1 orchestrates cell cycle-dependent translation of maternal factors to coordinate nuclear-cytoplasmic maturation in porcine oocytes.Science China. Life sciences · 2026Article
- Oocyte-specific knockout of eIF2B subunits causes apoptosis of mouse oocytes within the early growing follicles via DNA damage and mitochondrial dysfunction.Cell death & disease · 2026Article
- Review
- PAN2 maintains mRNA poly(A) tail homeostasis and regulates translation during spermiogenesis in mice.Nature communications · 2026Article
- hnRNPM cooperates with BCAS2 to modulate alternative splicing during oocyte development.Nature communications · 2026Article
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12 authors.
Funding
Abstract
backgroundDuring meiosis, the oocyte genome keeps dormant for a long time until zygotic genome activation. The dynamics and homeostasis of the maternal transcriptome are essential for maternal-to-zygotic transition. Zygotic arrest 1 (ZAR1) and its homolog, ZAR2, are RNA-binding proteins that are important for the regulation of maternal mRNA stability.
resultsSmart-seq2 analysis reveals drastically downregulated maternal transcripts. However, the detection of transcript levels by Smart-seq2 may be biased by the polyadenylated tail length of the mRNAs. Similarly, differential expression of maternal transcripts in oocytes with or without Zar1/2 differs when analyzed using total RNA-seq and Smart-seq2, suggesting an influence of polyadenylation. Combined analyses using total RNA-seq, LACE-seq, PAIso-seq2, and immunoprecipitation-mass spectrometry reveals that ZAR1 may target the 3'-untranslated regions of maternal transcripts, regulates their stability in germinal vesicle stage oocytes, and interacts with other proteins to control the polyadenylation of mRNAs.
conclusionsThe jointly analyzed multi-omics data highlight the limitations of Smart-seq2 in oocytes, clarify the dynamics of the maternal transcriptome, and uncover new roles of ZAR1 in regulating the maternal transcriptome.
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