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October 10, 2025Genes & DevelopmentOpen Access

Histone modification cross-talk and protein complex diversification confer plasticity to Polycomb repression

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Authors

JBJacques BonnetETEva TriantopoulouJBJasmin Birnhäupl

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Overview

Experimental analysis reveals that protein complexes shape histone modifications in Drosophila embryos, indicating adaptive gene regulation.

Key Points

  • Polycomb chromatin domains adapt through protein complex interactions, affecting gene expression outcomes during development.
  • Experimental results show PRC1 deposits low H2Aub1 levels, while variant PRC1 contributes significantly to widespread histone modification.
  • Embryos lacking PRC2.1 show rescued repression defects when PR-DUB is also absent, demonstrating histone cross-talk.
  • The study highlights how protein complex diversification provides adaptability in gene regulation, impacting cell fate decisions.

Cite This Study

Bonnet et al. (2025) studied this question.

synapsesocial.com/papers/68e8619c7ef2f04ca37e42b4https://doi.org/10.1101/gad.353148.125
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Novel modifiers of oncoprotein-mediated Polycomb inhibition in <i>Drosophila melanogaster</i>2025 · 3 citations
  2. 2Chromatin folding by the Polycomb group proteins and its elusive role in epigenetic repression2025
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  4. 4Characterization of an antagonistic switch between histone H3 lysine 27 methylation and acetylation in the transcriptional regulation of Polycomb group target genes2010 · 417 citations
  5. 5PRC1 nanoglobules organize Hox chromatin during Drosophila embryogenesis2026 · 1 citations