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December 8, 2025BloodOpen Access

Neomorphic chromatin engagement and epigenetic reprogramming by the IKZF1 N159Y tandem duplication mutant in b-acute lymphoblastic leukemia

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Authors

RWRuth Wang’onduDBDevanand BondagePBPrady Baviskar

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Overview

Experimental models show IKZF1 N159Y alters DNA-binding and increases sensitivity to histone acetylation modulation in B-ALL.

Key Points

  • This research explores the mechanistic role of IKZF1 N159Y in B-acute lymphoblastic leukemia (B-ALL).
  • Generated patient-derived cell line models expressing heterozygous or hemizygous IKZF1 N159Y-TD.
  • Profiled chromatin occupancy using ChIP-seq for various histone marks.
  • Conducted RNA-seq to analyze transcriptional changes and gene expression signatures.
  • Performed cytotoxicity assays to assess sensitivity to epigenetic modulators targeting histone acetylation.
  • Utilized AlphaFold 3.0 modeling for structural analysis of IKZF1 binding.
  • IKZF1 N159Y alters chromatin binding and transcription activity, impacting transcription start sites.
  • Cytotoxicity assays indicated increased sensitivity to histone acetylation inhibitors.
  • H3K4me3 enrichment indicated significant transcriptional changes in IKZF1 N159Y leukemia models.

Cite This Study

Wang’ondu et al. (2025) studied this question.

synapsesocial.com/papers/69362f604fa91c937236dcc8https://doi.org/10.1182/blood-2025-1480
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Also Consider

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

  1. 1Abstract 6057: The IKZF1 N159Y partial tandem duplication mutant drives chromatin remodeling, B-cell developmental defects and leukemia initiation2026
  2. 2Effects of ZMIZ1 mutations in newly defined early T-cell precursor leukemia2025
  3. 3Effect of the dominant-negative ikaros isoform 6 (Ik6) on cell function and drug sensitivity in acute lymphoblastic leukemia cell lines2025
  4. 4Intrinsically disordered sequence in the ZMIZ1 drives leukemic activity, regulates protein stability and biomolecular condensate formation 22535372026
  5. 5Prognostic significance of IKZF1 deletion subtypes in ph-negative BCP-ALL: Biallelic-null deletion predicts the worst survival in TP53-wild type patients2025