Cited by 1,293interferon and immune responsesCancer Immunotherapy and BiomarkersImmunotherapy and Immune Responses

The Cytosolic DNA-Sensing cGAS–STING Pathway in Cancer

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Kwon, John, Bakhoum, Samuel F.·2020·Cancer Discovery

Abstract

The recognition of DNA as an immune-stimulatory molecule is an evolutionarily conserved mechanism to initiate rapid innate immune responses against microbial pathogens. The cGAS–STING pathway was discovered as an important DNA-sensing machinery in innate immunity and viral defense. Recent advances have now expanded the roles of cGAS–STING to cancer. Highly aggressive, unstable tumors have evolved to co-opt this program to drive tumorigenic behaviors. In this review, we discuss the link between the cGAS–STING DNA-sensing pathway and antitumor immunity as well as cancer progression, genomic instability, the tumor microenvironment, and pharmacologic strategies for cancer therapy. Significance: The cGAS–STING pathway is an evolutionarily conserved defense mechanism against viral infections. Given its role in activating immune surveillance, it has been assumed that this pathway primarily functions as a tumor suppressor. Yet, mounting evidence now suggests that depending on the context, cGAS–STING signaling can also have tumor and metastasis-promoting functions, and its chronic activation can paradoxically induce an immune-suppressive tumor microenvironment.

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  • Activation of cytosolic nucleic acid sensing pathways is a promising strategy to stimulate innate anti-tumour immune responses to inflame immunologically 'cold' tumours.

    “Activation of cytosolic nucleic acid sensing pathways has emerged as a promising strategy to stimulate innate anti-tumour immune responses to inflame immunologically 'cold' tumours 13 , thus it is surprising that TBK1 has been nominated as a candidate immune evasion gene 4,9-11 and that disrupting TBK1 signaling has shown early promise enhancing response to ICB in murine tumour models 14,15 .”

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Authors
Kwon, J., & Bakhoum, S. F.
Affiliations
Memorial Sloan Kettering Cancer Center (US)
Corresponding author
Bakhoum, Samuel F.
Venue
Cancer Discovery
Published
2020-01-01
Volume
10
Issue
1
Pages
26-39
ISSN
  • 2159-8274 (ISSN-L)
  • 2159-8290
OpenAlex
W2995171541
Cited by
1,293
References
156
Citations by year
2026: 196 · 2025: 248 · 2024: 284 · 2023: 222 · 2022: 184 · 2021: 113 · 2020: 46
FWCI
7.41
Type
journal article
Language
en
Open access
Locations
  • Cancer Discovery (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (DP5OD026395)
  • National Cancer Institute (P30CA008748)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
Keywords
cGAS-STING pathway, cytosolic DNA sensing, antitumor immunity, tumor microenvironment, genomic instability, tumor progression, metastasis, immune evasion, tumor suppressor function, innate immunity, cancer immunotherapy
MeSH terms
STING Protein, Cyclic Guanosine Monophosphate-Adenosine Monophosphate Synthase, Cytosol, DNA, Neoplasm, Humans, Immunity, Innate, Membrane Proteins, Neoplasms, Nucleotidyltransferases, Tumor Microenvironment

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