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Transposable elements shape stemness in normal and leukemic hematopoiesis.

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|May 4, 2026
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Summary
This summary is machine-generated.

Transposable elements (TEs) regulate leukemia stem cell (LSC) properties in acute myeloid leukemia (AML). Identifying TE subfamilies helps stratify AML patients by stemness and survival, offering new therapeutic targets.

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Area of Science:

  • Genomics
  • Cancer Biology
  • Hematology

Background:

  • Acute myeloid leukemia (AML) is characterized by relapse, driven by leukemia stem cells (LSCs).
  • The genetic factors governing LSC stemness remain largely unknown.
  • Understanding LSC regulation is crucial for improving AML patient outcomes.

Purpose of the Study:

  • To identify genetic determinants of LSC stemness.
  • To explore the role of transposable elements (TEs) in LSC function.
  • To correlate TE accessibility with AML patient stratification and survival.

Main Methods:

  • Chromatin accessibility profiling across LSCs, hematopoietic stem cells, and progeny.
  • Bioinformatic analysis to identify TE subfamilies associated with cell states.
  • Functional assays to determine the role of TEs in LSC maintenance.
  • Correlation analysis with patient stemness and survival data.

Main Results:

  • Transposable elements (TEs) were identified as key regulators differentiating primitive (LSC) from mature cells.
  • Accessibility at 121 TE subfamilies distinguished LSCs and stratified AML patients by stemness and survival.
  • TEs function as docking sites for regulatory proteins, including LYL1 in LSCs.
  • Chromatin editing confirmed the necessity of LTR12C element accessibility for LSC stemness.

Conclusions:

  • Transposable elements critically regulate cell states, distinguishing normal stem cells from leukemia stem cells.
  • Specific TE subfamilies are essential for maintaining LSC stemness and influence AML patient prognosis.
  • Targeting TE regulation may offer novel therapeutic strategies for AML.