Title |
Dietary Lactobacillus-Derived Exopolysaccharide Enhances Immune-Checkpoint Blockade TherapyDietary Exopolysaccharide Enhances ICB Therapy Efficacy
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Published in |
Cancer Discovery, February 2022
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DOI | 10.1158/2159-8290.cd-21-0929 |
Pubmed ID | |
Authors |
Hirotaka Kawanabe-Matsuda, Kazuyoshi Takeda, Marie Nakamura, Seiya Makino, Takahiro Karasaki, Kazuhiro Kakimi, Megumi Nishimukai, Tatsukuni Ohno, Jumpei Omi, Kuniyuki Kano, Akiharu Uwamizu, Hideo Yagita, Ivo Gomperts Boneca, Gérard Eberl, Junken Aoki, Mark J. Smyth, Ko Okumura |
Abstract |
Microbes and their byproducts have been reported to regulate host health and immune functions. Here we demonstrated that microbial exopolysaccharide produced by Lactobacillus delbrueckii subsp. bulgaricus OLL1073R-1 (EPS-R1) induced CCR6+ CD8+ T cells of mice and humans. In mice, ingestion of EPS-R1 augmented anti-tumor effects of anti-CTLA-4 or anti-PD-1 mAb against CCL20-expressing tumors, in which infiltrating CCR6+ CD8+ T cells were increased and produced IFN-gamma accompanied by a substantial immune response gene expression signature maintaining T cell functions. Of note, the anti-tumor adjuvant effect of EPS-R1 was also observed in germ-free mice. Furthermore, the induction of CCR6 expression was mediated through the phosphorylated structure in EPS-R1 and a lysophosphatidic acid (LPA) receptor on CD8+ T cells. Overall, we find that dietary EPS-R1 consumption induces CCR6+ CD8+ T cells in Peyer's patches, favoring a tumor microenvironment that augments the therapeutic effect of immune checkpoint blockade depending on CCL20 production by tumors. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United States | 7 | 32% |
United Kingdom | 2 | 9% |
Japan | 2 | 9% |
Brazil | 1 | 5% |
Canada | 1 | 5% |
Unknown | 9 | 41% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 15 | 68% |
Science communicators (journalists, bloggers, editors) | 4 | 18% |
Scientists | 2 | 9% |
Practitioners (doctors, other healthcare professionals) | 1 | 5% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 42 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 8 | 19% |
Researcher | 3 | 7% |
Student > Doctoral Student | 3 | 7% |
Student > Bachelor | 2 | 5% |
Student > Postgraduate | 2 | 5% |
Other | 5 | 12% |
Unknown | 19 | 45% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 7 | 17% |
Immunology and Microbiology | 4 | 10% |
Medicine and Dentistry | 3 | 7% |
Agricultural and Biological Sciences | 2 | 5% |
Unspecified | 1 | 2% |
Other | 2 | 5% |
Unknown | 23 | 55% |