Spermidine activates mitochondrial trifunctional protein and improves antitumor immunity in mice

Author:

Al-Habsi Muna123ORCID,Chamoto Kenji1ORCID,Matsumoto Ken4ORCID,Nomura Norimichi5ORCID,Zhang Baihao6ORCID,Sugiura Yuki7ORCID,Sonomura Kazuhiro89,Maharani Aprilia1ORCID,Nakajima Yuka1ORCID,Wu Yibo1011ORCID,Nomura Yayoi5,Menzies Rosemary1ORCID,Tajima Masaki3ORCID,Kitaoka Koji1ORCID,Haku Yasuharu1ORCID,Delghandi Sara1ORCID,Yurimoto Keiko1ORCID,Matsuda Fumihiko8ORCID,Iwata So5ORCID,Ogura Toshihiko4ORCID,Fagarasan Sidonia36ORCID,Honjo Tasuku1ORCID

Affiliation:

1. Division of Immunology and Genomic Medicine, Center for Cancer Immunotherapy and Immunobiology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.

2. National Genetic Center, Ministry of Health, Muscat, Oman.

3. Division of Integrated High-Order Regulatory Systems, Center for Cancer Immunotherapy and Immunobiology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.

4. Department of Developmental Neurobiology, Institute of Development, Aging and Cancer, Tohoku University, Miyagi, Japan.

5. Department of Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.

6. Laboratory for Mucosal Immunity, Center for Integrative Medical Sciences, RIKEN Yokohama Institute, Yokohama, Japan.

7. Department of Biochemistry, Keio University, Tokyo, Japan.

8. Center for Genomic Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan.

9. Life Science Research Center, Technology Research Laboratory, Shimadzu Corporation, Kyoto, Japan.

10. YCI Laboratory for Next-Generation Proteomics, Center for Integrative Medical Sciences, RIKEN Yokohama Institute, Yokohama, Japan.

11. Chemical Biology Mass Spectrometry Platform, Faculty of Science, University of Geneva, Geneva, Switzerland.

Abstract

Spermidine (SPD) delays age-related pathologies in various organisms. SPD supplementation overcame the impaired immunotherapy against tumors in aged mice by increasing mitochondrial function and activating CD8 + T cells. Treatment of naïve CD8 + T cells with SPD acutely enhanced fatty acid oxidation. SPD conjugated to beads bound to the mitochondrial trifunctional protein (MTP). In the MTP complex, synthesized and purified from Escherichia coli , SPD bound to the α and β subunits of MTP with strong affinity and allosterically enhanced their enzymatic activities. T cell–specific deletion of the MTP α subunit abolished enhancement of programmed cell death protein 1 (PD-1) blockade immunotherapy by SPD, indicating that MTP is required for SPD-dependent T cell activation.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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