Cited by 372Cancer Immunotherapy and BiomarkersEpigenetics and DNA MethylationGenomics and Chromatin Dynamics

Epigenetic silencing by SETDB1 suppresses tumour intrinsic immunogenicity

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Griffin, Gabriel K., Wu, Jingyi, Iracheta-Vellve, Arvin, Patti, James C., Hsu, Jeffrey, Davis, Thomas, Dele-Oni, Deborah, Du, Peter P. +21 more·2021·Nature

Abstract

Epigenetic dysregulation is a defining feature of tumorigenesis that is implicated in immune escape 1,2. Here, to identify factors that modulate the immune sensitivity of cancer cells, we performed in vivo CRISPR-Cas9 screens targeting 936 chromatin regulators in mouse tumour models treated with immune checkpoint blockade. We identified the H3K9 methyltransferase SETDB1 and other members of the HUSH and KAP1 complexes as mediators of immune escape 3-5. We also found that amplification of SETDB1 (1q21.3) in human tumours is associated with immune exclusion and resistance to immune checkpoint blockade. SETDB1 represses broad domains, primarily within the open genome compartment. These domains are enriched for transposable elements (TEs) and immune clusters associated with segmental duplication events, a central mechanism of genome evolution 6. SETDB1 loss derepresses latent TE-derived regulatory elements, immunostimulatory genes, and TE-encoded retroviral antigens in these regions, and triggers TE-specific cytotoxic T cell responses in vivo. Our study establishes SETDB1 as an epigenetic checkpoint that suppresses tumour-intrinsic immunogenicity, and thus represents a candidate target for immunotherapy.

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  • Targeting specific H3K9 methyltransferases, such as SUV39H1 and SETDB1, has been shown to enhance immunotherapy responses in various cancer models.

    “Targeting specific H3K9 methyltransferases, such as SUV39H1 and SETDB1, has been shown to enhance immunotherapy responses in various cancer models.”

    From Multi-omics analysis identifies glioblastoma dependency on H3K9me3 methyltransferase activity (2025) · cites this paper as [24]

    The Results section (‘SETDB1 loss sensitizes tumors to ICB’; page unavailable) reports that Setdb1 knockout sensitized LLC tumors to PD-1/CTLA-4 blockade and B16 tumors to GVAX and PD-1 blockade. Our copy does not show that targeting SUV39H1 enhances immunotherapy responses, so that named example is unsupported. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • SETDB1 targeting can promote cytotoxic T cell-based immunotherapy in cancer mouse models.

    “SETDB1 targeting can promote cytotoxic T cell-based immunotherapy in cancer mouse models24.”
  • Tumour-specific loss of TBK1 did not result in dramatic remodeling of the immune compartment, in contrast to other recently characterized immune evasion genes.

    “In contrast to other recently characterized immune evasion genes 4,8,45 , tumour-specific loss of TBK1 did not result in dramatic remodeling of the immune compartment.”

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Authors
Griffin, G. K., Wu, J., Iracheta-Vellve, A., Patti, J. C., Hsu, J., Davis, T., Dele-Oni, D., Du, P. P., Halawi, A. G., Ishizuka, J. J., Kim, S. Y., Klaeger, S., Knudsen, N. H., Miller, B. C., Nguyen, T. H., Olander, K. E., Papanastasiou, M., Rachimi, S., Robitschek, E. J., Schneider, E. M., Yeary, M. D., Zimmer, M. D., Jaffe, J. D., Carr, S. A., Doench, J. G., Haining, W. N., Yates, K. B., Manguso, R. T., & Bernstein, B. E.
Affiliations
  • Broad Institute (US)
  • Harvard University (US)
Corresponding author
  • Manguso, Robert T.
  • Bernstein, Bradley E.
Venue
Nature
Published
2021-05-05
Volume
595
Issue
7866
Pages
309-314
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W3158155618
Cited by
370
References
61
Citations by year
2026: 57 · 2025: 78 · 2024: 77 · 2023: 69 · 2022: 70 · 2021: 19
FWCI
21.55
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Access to Scholarship at Harvard (DASH) (Harvard University) (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
National Cancer Institute (DP1CA216873, K08CA245112, U24CA210986, U01CA214125)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
SETDB1, H3K9 methyltransferase, epigenetic silencing, tumor immunogenicity, immune evasion, immune checkpoint blockade, transposable elements, segmental duplication, retroviral antigens, cytotoxic T lymphocytes, HUSH complex, chromatin regulators, immunotherapy targets
MeSH terms
Animals, Antigens, Viral, Chromatin, Disease Models, Animal, DNA Transposable Elements, Female, Humans, Neoplasms, Histone-Lysine N-Methyltransferase, T-Lymphocytes, Cytotoxic, Histocompatibility Antigens Class I, Gene Silencing, Mice, Programmed Cell Death 1 Receptor, CRISPR-Cas Systems

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