Intratumoral administration of cGAMP transiently accumulates potent macrophages for anti-tumor immunity at a mouse tumor site

Takayuki Ohkuri, Akemi Kosaka, Kei Ishibashi, Takumi Kumai, Yui Hirata, Kenzo Ohara, Toshihiro Nagato, Kensuke Oikawa, Naoko Aoki, Yasuaki Harabuchi, Esteban Celis, Hiroya Kobayashi

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Stimulator of IFN genes (STING) spontaneously contributes to anti-tumor immunity by inducing type I interferons (IFNs) following sensing of tumor-derived genomic DNAs in the tumor-bearing host. Although direct injection of STING ligands such as cyclic diguanylate monophosphate (c-di-GMP) and cyclic [G(2′,5′)pA(3′,5′)p] (cGAMP) into the tumor microenvironment exerts anti-tumor effects through strong induction of type I IFNs and activation of innate and adaptive immunity, the precise events caused by STING in the tumor microenvironment remain to be elucidated. We describe here our finding that a CD45+ CD11bmid Ly6C+ cell subset transiently accumulated in mouse tumor microenvironment of 4T1 breast cancer, squamous cell carcinomas, CT26 colon cancer, or B16F10 melanoma tissue after intratumoral injection of cGAMP. The accumulated cells displayed a macrophage (M ) phenotype since the cells were positive for F4/80 and MHC class II and negative for Ly6G. Intratumoral cGAMP treatment did not induce Mφ accumulation in STING-deficient mice. Depletion of CD8+ T cell using anti-CD8 mAb impaired the anti-tumor effects of cGAMP treatment. Depletion of the Mφ using clodronate liposomes impaired the anti-tumor effects of cGAMP treatment. Functional analysis indicated that the STING-triggered tumor-migrating Mφ exhibited phagocytic activity, production of tumor necrosis factor alpha TNFα), and high expression levels of T cell-recruiting chemokines, Cxcl10 and Cxcl11, IFN-induced molecules, MX dynamin-like GTPase 1 (Mx1) and 2′-5′ oligoadenylate synthetase-like 1 (Oasl1), nitric oxide synthase 2 (Nos2), and interferon beta 1 (Ifnb1). These results indicate that the STING-triggered tumor-migrating Mφ participate in the anti-tumor effects of STING-activating compounds.

Original languageEnglish (US)
Pages (from-to)705-716
Number of pages12
JournalCancer Immunology, Immunotherapy
Volume66
Issue number6
DOIs
StatePublished - Jun 1 2017

Fingerprint

Immunity
Macrophages
Neoplasms
Tumor Microenvironment
Genes
Interferon Type I
Interferons
Clodronic Acid
Dynamins
T-Lymphocytes
cyclic guanosine monophosphate-adenosine monophosphate
Injections
Interferon-beta
GTP Phosphohydrolases
Adaptive Immunity
Ligases
Chemokines
Innate Immunity
Liposomes
Nitric Oxide Synthase

Keywords

  • Immunotherapy
  • Macrophages
  • STING
  • Tumor migration
  • cGAMP

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Oncology
  • Cancer Research

Cite this

Intratumoral administration of cGAMP transiently accumulates potent macrophages for anti-tumor immunity at a mouse tumor site. / Ohkuri, Takayuki; Kosaka, Akemi; Ishibashi, Kei; Kumai, Takumi; Hirata, Yui; Ohara, Kenzo; Nagato, Toshihiro; Oikawa, Kensuke; Aoki, Naoko; Harabuchi, Yasuaki; Celis, Esteban; Kobayashi, Hiroya.

In: Cancer Immunology, Immunotherapy, Vol. 66, No. 6, 01.06.2017, p. 705-716.

Research output: Contribution to journalArticle

Ohkuri, T, Kosaka, A, Ishibashi, K, Kumai, T, Hirata, Y, Ohara, K, Nagato, T, Oikawa, K, Aoki, N, Harabuchi, Y, Celis, E & Kobayashi, H 2017, 'Intratumoral administration of cGAMP transiently accumulates potent macrophages for anti-tumor immunity at a mouse tumor site', Cancer Immunology, Immunotherapy, vol. 66, no. 6, pp. 705-716. https://doi.org/10.1007/s00262-017-1975-1
Ohkuri, Takayuki ; Kosaka, Akemi ; Ishibashi, Kei ; Kumai, Takumi ; Hirata, Yui ; Ohara, Kenzo ; Nagato, Toshihiro ; Oikawa, Kensuke ; Aoki, Naoko ; Harabuchi, Yasuaki ; Celis, Esteban ; Kobayashi, Hiroya. / Intratumoral administration of cGAMP transiently accumulates potent macrophages for anti-tumor immunity at a mouse tumor site. In: Cancer Immunology, Immunotherapy. 2017 ; Vol. 66, No. 6. pp. 705-716.
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