Silencing of retrotransposons by SETDB1 inhibits the interferon response in acute myeloid leukemia

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Updated: Feb 23, 2026

Investigation of the Transcriptional Role of a RUNX1 Intronic Silencer by CRISPR/Cas9 Ribonucleoprotein in Acute Myeloid Leukemia Cells
09:16

Investigation of the Transcriptional Role of a RUNX1 Intronic Silencer by CRISPR/Cas9 Ribonucleoprotein in Acute Myeloid Leukemia Cells

Published on: September 1, 2019

8.1K

Trinna L Cuellar1, Anna-Maria Herzner2, Xiaotian Zhang3

  • 1Department of Molecular Biology, Genentech, Inc., South San Francisco, CA trinna.cuellar@princeton.edu.

The Journal of Cell Biology
|September 10, 2017
PubMed

Insights

Cancer cells evade immune detection by rewiring genetic networks. This study reveals SETDB1, a gene regulator, suppresses immune responses in acute myeloid leukemia (AML) by controlling retrotransposable elements and double-stranded RNA production.

Area of Science:

  • Cancer Biology
  • Immunology
  • Epigenetics

Background:

  • Cancer cells require genetic and epigenetic reprogramming for survival and immune evasion.
  • Understanding these regulatory mechanisms is crucial for developing effective cancer therapies.

Purpose of the Study:

  • To identify novel regulators of innate immunity in cancer.
  • To elucidate the role of SETDB1 in acute myeloid leukemia (AML) and its impact on immune evasion.

Main Methods:

  • Utilized human AML cell lines.
  • Employed a custom CRISPR/Cas9 screening platform.
  • Investigated the function of H3K9 methyltransferase SETDB1.

Main Results:

  • Identified SETDB1 as a negative regulator of innate immunity.
  • Demonstrated that SETDB1 loss in AML cells leads to retrotransposable element desilencing and double-stranded RNA production.
  • Observed induction of type I interferon response and apoptosis via dsRNA-sensing pathways upon SETDB1 loss.

Conclusions:

  • Established a novel gene regulatory axis involving SETDB1, retrotransposable elements, and innate immunity in cancer.
  • Highlighted a mechanism by which cancer cells, specifically AML, circumvent immune surveillance.
  • Provided insights into potential therapeutic targets for enhancing anti-cancer immunity.

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