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The transcription factor RUNX2 drives the generation of human NK cells and promotes tissue residency

Sigrid Wahlen1,2, Filip Matthijssens2,3, Wouter Van Loocke2,3

  • 1Department of Diagnostic Sciences, Ghent University, Ghent, Belgium.

Elife
|July 6, 2022
PubMed

Insights

RUNX2 drives the generation of natural killer (NK) cells and promotes their tissue residency. This discovery may enhance NK cell-based cancer therapies by targeting this key transcription factor.

Area of Science:

  • Immunology
  • Cell Biology
  • Molecular Biology

Background:

  • Natural killer (NK) cells are crucial innate lymphocytes for eliminating virus-infected and cancer cells.
  • Distinct tissue-resident NK cell subsets exist, but the regulators of their development and function are not fully understood.
  • The role of the transcription factor RUNX2 in NK cell biology remains uninvestigated in both mice and humans.

Purpose of the Study:

  • To investigate the role of RUNX2 in the development and function of human NK cells.
  • To determine if RUNX2 influences NK cell generation and tissue residency.
  • To explore the potential therapeutic implications of RUNX2 in NK cell-based cancer treatments.

Main Methods:

  • Human hematopoietic stem cell-based NK cell differentiation cultures were used.
  • RUNX2 expression was manipulated via knockdown and overexpression.
  • Transcriptomic and ChIP-sequencing analyses were performed to understand molecular mechanisms.

Main Results:

  • RUNX2 was found to drive the generation of NK cells, potentially by inducing IL-2Rβ expression in NK progenitor cells.
  • RUNX2 was demonstrated to promote tissue residency in human NK cells.
  • The study provides new insights into the molecular regulation of NK cell development and tissue homing.

Conclusions:

  • RUNX2 is a key transcription factor regulating human NK cell generation and promoting tissue residency.
  • Targeting RUNX2 could offer novel strategies for improving NK cell-based cancer immunotherapies.
  • These findings have broader implications for understanding tissue-resident lymphocytes beyond NK cells.
Keywords:
NK cell developmentRUNX2humanimmunologyinflammationmousetissue residency

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