Cited by 55Pancreatic and Hepatic Oncology ResearchCancer Immunotherapy and Biomarkersinterferon and immune responses

cGAS-STING signaling encourages immune cell overcoming of fibroblast barricades in pancreatic cancer

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Kabashima, Ayano, Matsuo, Yuki, Ito, Saki, Akiyama, Yoshimitsu, Ishii, Takeshi, Shimada, Shu, Masamune, Atsushi, Tanabe, Minoru +1 more·2022·Scientific Reports

Abstract

Immune checkpoint blockade (ICB) treatment improves the prognosis of several types of solid tumors, however, responsiveness to ICB therapy remains low in pancreatic ductal adenocarcinoma (PDACs), which has a rich tumor microenvironment (TME). The TME is composed of various stromal cells, including cancer-associated fibroblasts (CAFs), which contribute to the establishment of an immunosuppressive microenvironment. The cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway is an innate immune pathway that results in the upregulation of immune cell recruiting-cytokines and anti-tumor efficacy. In this study, we aimed to investigate the impact of cGAS-STING expression and the presence of CAFs upon immune cell infiltration in PDACs. cGAS and STING co-expressing PDAC cases showed favorable survival, with many cytotoxic CD8 + T cell infiltrations from the stromal component adjacent to the cancer cells toward cancer cells, but not in cGAS-STING signaling defected PDAC cases. The signatures of tumor-restrain CAFs were expressed in tumors with cGAS-STING signaling. Finally, transwell co-culture experiments demonstrated that immune cell infiltration was impeded by the presence of CAFs, but not by activation of cGAS-STING signaling. In conclusion, pro-infiltration signals, such as cGAS-STING, and characterization of CAFs are crucial in defeating CAF barricades and encouraging immune cell infiltration in PDACs.

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  • The current dogma dictates that the host-derived STING pathway is the converging critical responder.

    “a finding that is in sharp contrast to the current dogma which dictates that host-derived STING pathway is the converging critical responder.79–81”

    From Functional tumor cell-intrinsic STING, not host STING, drives local and systemic antitumor immunity and therapy efficacy following cryoablation (2023) · cites this paper as [81]

    The Introduction (page unavailable) describes cGAS-STING as a crucial regulator of tumor immunity, supporting the pathway’s general importance. It does not identify host-derived STING as the converging critical responder. The Discussion (page unavailable) reports lower recruitment of CD8+ T cells toward cancer cells in stromal-STING-dominant cases than in cases with cancer-cell cGAS-STING expression, while cautioning that there were too few stromal-dominant cases for firm conclusions. (LLM, conf=0.78)

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Authors
Kabashima, A., Matsuo, Y., Ito, S., Akiyama, Y., Ishii, T., Shimada, S., Masamune, A., Tanabe, M., & Tanaka, S.
Affiliations
  • Tokyo Medical and Dental University (JP)
  • Mayo Clinic (US)
  • Tohoku University (JP)
Corresponding author
  • Kabashima, Ayano
  • Tanaka, Shinji
Venue
Scientific Reports
Published
2022-06-30
Volume
12
Issue
1
Pages
10466-10466
ISSN
2045-2322 (ISSN-L)
OpenAlex
W4283734650
Cited by
55
References
38
Citations by year
2026: 11 · 2025: 9 · 2024: 9 · 2023: 10 · 2022: 16
FWCI
4.60
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • The Ministry of Education, Culture, Sports, Science and Technology of Japan (20K17606, 19H01055)
  • Research Grant from the Princess Takamatsu Cancer Research Fund
  • Agency for Medical Research and Development (P-CREATE JP19cm0106540)
Topics
  • Health Sciences › Medicine › Oncology › Pancreatic and Hepatic Oncology Research
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
Keywords
cGAS-STING pathway, pancreatic ductal adenocarcinoma, cancer-associated fibroblasts, tumor microenvironment, immune cell infiltration, CD8+ T cells, immune checkpoint blockade, innate immunity, immunosuppression, stromal barriers
MeSH terms
Cancer-Associated Fibroblasts, STING Protein, Cyclic Guanosine Monophosphate-Adenosine Monophosphate Synthase, Humans, Membrane Proteins, Nucleotidyltransferases, Pancreatic Neoplasms, Signal Transduction, Carcinoma, Pancreatic Ductal, Tumor Microenvironment

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