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May 31, 2026Blood

Dissecting polycomb complexes for enhanced fetal hemoglobin production

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Authors

PKPaul KaminskiUniversity of PennsylvaniaKMKristen MinChildren's Hospital of PhiladelphiaETElizabeth A. TraxlerHospital of the University of Pennsylvania

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Implication

Randomized trial explores reactivating fetal hemoglobin in adult cells, suggesting new treatments for blood disorders.

Key Points

  • The study aims to investigate the activation of fetal hemoglobin production by selectively targeting polycomb repressive complexes.
  • Conducted a high-density CRISPR-Cas9 mutagenesis screen to identify regions influencing fetal hemoglobin expression.
  • Explored the specific impact of modifying components of PRC1 and PRC2 on HbF repression.
  • Utilized cell models derived from mice with human b-globin genes to validate the findings.
  • Identified EZH2D14, a mutant resulting in exon 14 skipping, which reduces hemoglobin F repression while maintaining cellular fitness.
  • Demonstrated that EZH2D14 retains H3K27 methylation and partial repression on a subset of PRC target genes.
  • Confirmed functional pathways mediating EZH2 control of HbF in mouse models of hemoglobin switching.

Cite This Study

Kaminski et al. (2026) studied this question.

synapsesocial.com/papers/6a1bd0fa5783ba022b6fca51https://doi.org/10.1182/blood.2026033804
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Also Consider

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

  1. 1Correction of sickle cell disease by homologous recombination in embryonic stem cells2006 · 328 citations
  2. 2FACS and immunomagnetic isolation of early erythroid progenitor cells from mouse fetal liver2021 · 4 citations
  3. 3The role of the polycomb complex in silencing α-globin gene expression in nonerythroid cells2008 · 54 citations
  4. 4The HRI-regulated transcription factor ATF4 activates BCL11A transcription to silence fetal hemoglobin expression2020 · 82 citations
  5. 5Identification and characterization of RBM12 as a novel regulator of fetal hemoglobin expression2022 · 23 citations