#PRC2
🧬Structural basis for the inhibition of PRC2 by active transcription histone posttranslational modifications

⏰Published: 07 January 2025

📑Journal : @nature.com structural biology

🔗Study the paper www.nature.com/articles/s41... (1/n)

@epigenometech.bsky.social
@cancrepigenetic.bsky.social
Structural basis for the inhibition of PRC2 by active transcription histone posttranslational modifications - Nature Structural & Molecular Biology
Structures reveal that histone H3K36me3 and H3K4me3 modifications reduce Polycomb repressive complex 2 (PRC2) function through the inhibition of histone tail engagement and antagonistic binding to the...
www.nature.com
November 11, 2026 at 3:07 AM
Protein cofactors diversify PRC2 architecture and function pubmed.ncbi.nlm.nih.gov/42990302/ #cryoem
November 8, 2026 at 1:02 AM
Epigenetics Update - Cell-cycle-driven epigenetic resetting maintains meristematic cell fate for shoot branching www.nature.com/articles/s41...

Yuling Jiao (pku1898.bsky.social) & Ying Wang (Capital Normal University) in Nature Plants

#Epigenetics #Plants #Chromatin
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epigenometech.com
Cell-cycle-driven epigenetic resetting maintains meristematic cell fate for shoot branching - Nature Plants
In Arabidopsis, active cell division keeps bud precursor cells undifferentiated by removing H3 K27 trimethylation marks, countering PRC2 silencing of STM. Prolonged quiescence causes irreversible diff...
www.nature.com
November 6, 2026 at 1:34 PM
New Article: "Cell-cycle-driven epigenetic resetting maintains meristematic cell fate for shoot branching" rdcu.be/sLftVWGzh8ga

Active cell division keeps bud precursor cells undifferentiated by removing H3 K27 trimethylation marks, countering PRC2 silencing of STM. #PlantScience
November 2, 2026 at 8:30 PM
Proud of Alex Miller for his PhD work, and seeing it in Development, a journal I have read and re-read many classic papers on Hox genes and neural development.
#hox #polycomb #spinal

PHC2-dependent PRC1 assemblies stabilize motor neuron Hox codes journals.biologists.com/dev/article-...
PHC2-dependent PRC1 assemblies stabilize motor neuron Hox codes
Polycomb Repressive Complexes PRC1 and PRC2 establish and maintain chromatin architectures critical for cell-type specific gene expression. In the developing spinal cord, PRC1 is essential for impleme...
journals.biologists.com
November 1, 2026 at 5:17 PM
PRC2 governs HR proficiency and chemosensitivity in ovarian cancer via SQSTM1-mediated chromatin ubiquitination
The authors declare that they have no known competing financial interests or personal relationships that could influence the work reported in this study. Ethics statement Animal studies were conducted in accordance with ethical guidelines approved by the Animal Ethics Committee of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. The ethical approval number was 2132. Research involving human biological samples was conducted in compliance with the Declaration of Helsinki and approved by the Research Ethics Committee of Union Hospital, Tongji Medical College, Huazhong University of Science and Technology (Wuhan, China). The ethical approval number was S451. Consent for publication All participants provided written informed consent before their inclusion. The purpose of the research, the procedures involved, and any potential risks or benefits were thoroughly explained to each participant. Participants were informed of their right to withdraw from the study at any time without any consequences. The informed consent process complied with the ethical standards of the Research Ethics Committee of the Union Hospital, Tongji Medical College, Huazhong University of Science and Technology (Wuhan, China). This article is published under an open access license. Please check the 'Copyright Information' section either on this page or in the PDF...
www.nature.com
November 1, 2026 at 12:20 PM
- "PHC2-dependent PRC1 assemblies stabilize Hox transcriptional boundaries and motor neuron segmental identities".

journals.biologists.com/dev/article-...
PHC2-dependent PRC1 assemblies stabilize motor neuron Hox codes
Polycomb Repressive Complexes PRC1 and PRC2 establish and maintain chromatin architectures critical for cell-type specific gene expression. In the developing spinal cord, PRC1 is essential for impleme...
journals.biologists.com
November 2, 2026 at 8:05 AM
A PCA-derived lung diffusion-volume coupling pattern was lower in post-COVID participants vs healthy controls after adjusting for age, sex, and BMI.

Machine learning did not significantly outperform logistic regression for classification in this cross-sectional study. #LongCovid
A machine learning approach to respiratory biomechanics: Identifying a PCA-derived membrane-volume coupling pattern in post-COVID pulmonary function - PubMed
Post-COVID status was associated with a lower score on the sample-derived diffusion-volume component pattern. The MLP showed numerically higher internal discrimination than logistic regression, while the between-model comparison remained statistically inconclusive. These findings highlight PRC2 as a …
pubmed.ncbi.nlm.nih.gov
November 2, 2026 at 11:47 PM
🔬PhD opportunity in 𝐁𝐫𝐢𝐚𝐧 𝐎𝐫𝐭𝐦𝐚𝐧𝐧's group!
𝗨𝗞𝗥𝗜 𝗕𝗕𝗦𝗥𝗖 𝗡𝗘𝗘𝗗𝗟 𝗗𝗟𝗔: Defining the Role of the PRC2 complex in Chromatin Regulation and Cell Viability under Hypoxia.
⌛ 𝗗𝗲𝗮𝗱𝗹𝗶𝗻𝗲: 24 December 2026.
🎓 4 𝐲𝐞𝐚𝐫 𝐟𝐮𝐧𝐝𝐢𝐧𝐠, primarily for UK applicants
ℹ️ 𝐅𝐢𝐧𝐝 𝐨𝐮𝐭 𝐦𝐨𝐫𝐞 𝐚𝐧𝐝 𝐚𝐩𝐩𝐥𝐲: www.findaphd.com/phds/project...
UKRI BBSRC NEEDL DLA: Defining the Role of the PRC2 complex in Chromatin Regulation and Cell Viability under Hypoxia at Newcastle University on FindAPhD.com
PhD Project - UKRI BBSRC NEEDL DLA: Defining the Role of the PRC2 complex in Chromatin Regulation and Cell Viability under Hypoxia at Newcastle University, listed on FindAPhD.com
www.findaphd.com
October 28, 2026 at 10:13 AM
Protein cofactors diversify PRC2 architecture and function www.biorxiv.org/content/10.64898/2026.10.24.761575v1 #cryoem
October 27, 2026 at 7:10 AM
Protein cofactors diversify PRC2 architecture and function https://www.biorxiv.org/content/10.64898/2026.10.24.761575v1
October 26, 2026 at 6:46 PM
Protein cofactors diversify PRC2 architecture and function https://www.biorxiv.org/content/10.64898/2026.10.24.761575v1
October 26, 2026 at 6:46 PM
Pleased to share our new pre-print revealing the mechanism through which G-quadruplex (G4) RNA binds and inhibits polycomb repressive complex 2 (PRC2). Work led by John Houslay, a joint student between our group and the Wilson/Gamblin lab. 1/8
www.biorxiv.org/content/10.6...
October 21, 2026 at 7:53 PM
G4 RNA was recently shown to inhibit PRC2 activity by inducing dimerisation, which occluded the active site. However, we found that the PRC2 catalytic core - G4 complex is mostly monomeric in physiological salt conditions. 2/8
October 21, 2026 at 7:53 PM
We also found that G4 RNA preferentially binds to the inactivated form of PRC2. SAM and coactivator peptides inhibit G4 RNA binding through an allosteric mechanism, which is prevented by a SAM binding mutation. 7/8
October 21, 2026 at 7:53 PM
John used cryo-EM to solve the structure of the monomeric PRC2 catalytic core bound to G4 RNA. He found that G4 RNA binds PRC2 through the disordered K and GR loops in EZH2. 3/8
October 21, 2026 at 7:53 PM
The flexible nature of these loops allows PRC2 to accommodate a range of G4 structures. 4/8
October 21, 2026 at 7:53 PM
Mutation of the basic patches within the loops completely abrogated PRC2 RNA binding activity. 5/8
October 21, 2026 at 7:53 PM
G4 RNA binding to the K and GR loop basic patches blocks their ability to mediate PRC2 binding to the substrate nucleosome. 6/8
October 21, 2026 at 7:53 PM
Fully funded #PhD Studentship available in collaboration with the PI Christos Velanis (OU, UK). The Polycomb Gatekeeper: PRC2-Mediated Genome Defence and Allele-Specific Expression in the #diatom Fragilariopsis cylindrus. @ueaenv.bsky.social @norwichmicro.bsky.social

centa.ac.uk/studentship/...
October 19, 2026 at 2:23 PM
Establishing Polycomb regulatory landscapes in human early development
Kim, J. J. & Kingston, R. E. Context-specific Polycomb mechanisms in development. Nat. Rev. Genet. 23, 680–695 (2022). Margueron, R. & Reinberg, D. The Polycomb complex PRC2 and its mark in life. Nature 469, 343–349 (2011). Blackledge, N. P. & Klose, R. J. The molecular principles of gene regulation by Polycomb repressive complexes. Nat. Rev. Mol. Cell Biol. 22, 815–833 (2021). Laugesen, A., Højfeldt, J. W. & Helin, K. Molecular mechanisms directing PRC2 recruitment and H3K27 methylation. Mol. Cell 74, 8–18 (2019). Loubiere, V., Martinez, A.-M. & Cavalli, G. Cell fate and developmental regulation dynamics by Polycomb proteins and 3D genome architecture. BioEssays 41, e1800222 (2019). Xia, W. & Xie, W. Rebooting the epigenomes during mammalian early embryogenesis. Stem Cell Reports 15, 1158–1175 (2020). Zheng, H. et al. Resetting epigenetic memory by reprogramming of histone modifications in mammals. Mol. Cell 63, 1066–1079 (2016). Chen, Z., Djekidel, M. N. & Zhang, Y. Distinct dynamics and functions of H2AK119ub1 and H3K27me3 in mouse preimplantation embryos. Nat. Genet. 53, 551–563 (2021). Zhu, Y. et al. Genomewide decoupling of H2AK119ub1 and H3K27me3 in early mouse development. Sci. Bull. (Beijing) 66, 2489–2497 (2021). Liu, X. et al. Distinct features of H3K4me3 and H3K27me3 chromatin domains...
www.nature.com
October 19, 2026 at 9:15 PM
G4 RNA inhibits PRC2 by sequestering two disordered loops required for nucleosome binding https://www.biorxiv.org/content/10.64898/2026.10.15.755990v1
October 18, 2026 at 2:47 AM
G4 RNA inhibits PRC2 by sequestering two disordered loops required for nucleosome binding https://www.biorxiv.org/content/10.64898/2026.10.15.755990v1
October 18, 2026 at 2:47 AM
#EpigeneticDysregulation can drive #cancer.
This review highlights CXorf67’s roles in PRC2 regulation, histone modification and #DNArepair, linking it to multiple malignancies and highlighting its potential as a therapeutic target.
#OpenAccess in #GenesAndDiseases: doi.org/10.1016/j.ge...
October 16, 2026 at 12:15 PM
PRC2-binding regions are hotspots of DNA methylation entropy in pre-cancer and cancer https://www.biorxiv.org/content/10.64898/2026.10.11.758285v1
October 13, 2026 at 11:17 AM