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Sharma G, Sharma A, Kim I, Cha DG, Kim S, Park ES, Noh JG, Lee J, Ku JH, Choi YH, Kong J, Lee H, Ko H, Lee J, Notaro A, Hong SH, Rhee JH, Kim SG, De Castro C, Molinaro A, Shin K, Kim S, Kim JK, Rudra D, Im SH. A dietary commensal microbe enhances antitumor immunity by activating tumor macrophages to sequester iron. Nat Immunol 2024; 25:790-801. [PMID: 38664585 DOI: 10.1038/s41590-024-01816-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 03/13/2024] [Indexed: 05/04/2024]
Abstract
Innate immune cells generate a multifaceted antitumor immune response, including the conservation of essential nutrients such as iron. These cells can be modulated by commensal bacteria; however, identifying and understanding how this occurs is a challenge. Here we show that the food commensal Lactiplantibacillus plantarum IMB19 augments antitumor immunity in syngeneic and xenograft mouse tumor models. Its capsular heteropolysaccharide is the major effector molecule, functioning as a ligand for TLR2. In a two-pronged manner, it skews tumor-associated macrophages to a classically active phenotype, leading to generation of a sustained CD8+ T cell response, and triggers macrophage 'nutritional immunity' to deploy the high-affinity iron transporter lipocalin-2 for capturing and sequestering iron in the tumor microenvironment. This process induces a cycle of tumor cell death, epitope expansion and subsequent tumor clearance. Together these data indicate that food commensals might be identified and developed into 'oncobiotics' for a multi-layered approach to cancer therapy.
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Affiliation(s)
- Garima Sharma
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
- ImmunoBiome, Bio Open Innovation Center, Pohang, Republic of Korea
| | - Amit Sharma
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
- Innovation Research Center for Bio-future Technology (B-IRC), Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Inhae Kim
- ImmunoBiome, Bio Open Innovation Center, Pohang, Republic of Korea
| | - Dong Gon Cha
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Republic of Korea
| | - Somi Kim
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Eun Seo Park
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Republic of Korea
| | - Jae Gyun Noh
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Juhee Lee
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Republic of Korea
| | - Ja Hyeon Ku
- Department of Urology, College of Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Yoon Ha Choi
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Republic of Korea
| | - JungHo Kong
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Haena Lee
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Haeun Ko
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Juhun Lee
- ImmunoBiome, Bio Open Innovation Center, Pohang, Republic of Korea
| | - Anna Notaro
- Department of Chemical Sciences, University of Napoli Federico II Complesso Universitario Monte Santangelo, Via Cintia 4, I-80126, Naples, Italy
| | - Seol Hee Hong
- Clinical Vaccine R&D Center and Combinatorial Tumor Immunotherapy MRC, Chonnam National University, Hwasun-gun, Republic of Korea
| | - Joon Haeng Rhee
- Clinical Vaccine R&D Center and Combinatorial Tumor Immunotherapy MRC, Chonnam National University, Hwasun-gun, Republic of Korea
| | - Sang Geon Kim
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University, Seoul, Republic of Korea
| | - Cristina De Castro
- Department of Chemical Sciences, University of Napoli Federico II Complesso Universitario Monte Santangelo, Via Cintia 4, I-80126, Naples, Italy
| | - Antonio Molinaro
- Department of Chemical Sciences, University of Napoli Federico II Complesso Universitario Monte Santangelo, Via Cintia 4, I-80126, Naples, Italy
| | - Kunyoo Shin
- Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Republic of Korea
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - Sanguk Kim
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Jong Kyoung Kim
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Republic of Korea
| | - Dipayan Rudra
- ImmunoBiome, Bio Open Innovation Center, Pohang, Republic of Korea.
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.
| | - Sin-Hyeog Im
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea.
- ImmunoBiome, Bio Open Innovation Center, Pohang, Republic of Korea.
- Institute for Convergence Research and Education in Advanced Technology, Yonsei University, Seoul, Republic of Korea.
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Jia J, Zheng M, Zhang C, Li B, Lu C, Bai Y, Tong Q, Hang X, Ge Y, Zeng L, Zhao M, Song F, Zhang H, Zhang L, Hong K, Bi H. Killing of Staphylococcus aureus persisters by a multitarget natural product chrysomycin A. SCIENCE ADVANCES 2023; 9:eadg5995. [PMID: 37540745 PMCID: PMC10403215 DOI: 10.1126/sciadv.adg5995] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 07/05/2023] [Indexed: 08/06/2023]
Abstract
Staphylococcus aureus poses a severe public health problem as one of the vital causative agents of healthcare- and community-acquired infections. There is a globally urgent need for new drugs with a novel mode of action (MoA) to combat S. aureus biofilms and persisters that tolerate antibiotic treatment. We demonstrate that a benzonaphthopyranone glycoside, chrysomycin A (ChryA), is a rapid bactericide that is highly active against S. aureus persisters, robustly eradicates biofilms in vitro, and shows a sustainable killing efficacy in vivo. ChryA was suggested to target multiple critical cellular processes. A wide range of genetic and biochemical approaches showed that ChryA directly binds to GlmU and DapD, involved in the biosynthetic pathways for the cell wall peptidoglycan and lysine precursors, respectively, and inhibits the acetyltransferase activities by competition with their mutual substrate acetyl-CoA. Our study provides an effective antimicrobial strategy combining multiple MoAs onto a single small molecule for treatments of S. aureus persistent infections.
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Affiliation(s)
- Jia Jia
- Department of Pathogen Biology, Jiangsu Key Laboratory of Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Mingxin Zheng
- Department of Pathogen Biology, Jiangsu Key Laboratory of Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Chongwen Zhang
- Department of Pathogen Biology, Jiangsu Key Laboratory of Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Binglei Li
- Department of Pathogen Biology, Jiangsu Key Laboratory of Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Cai Lu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Yuefan Bai
- Department of Pathogen Biology, Jiangsu Key Laboratory of Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Qian Tong
- Department of Pathogen Biology, Jiangsu Key Laboratory of Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Xudong Hang
- Department of Pathogen Biology, Jiangsu Key Laboratory of Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Yixin Ge
- Department of Pathogen Biology, Jiangsu Key Laboratory of Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Liping Zeng
- Department of Pathogen Biology, Jiangsu Key Laboratory of Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
| | - Ming Zhao
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Fuhang Song
- School of Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Huawei Zhang
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China
| | - Liang Zhang
- Department of Pharmacology and Chemical Biology, State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Kui Hong
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Hongkai Bi
- Department of Pathogen Biology, Jiangsu Key Laboratory of Pathogen Biology, Nanjing Medical University, Nanjing 211166, China
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Snee M, Wever J, Guyton J, Beehler-Evans R, Yokoyama CC, Micchelli CA. Peptidoglycan recognition in Drosophila is mediated by LysMD3/4. J Biol Chem 2023; 299:104758. [PMID: 37116706 DOI: 10.1016/j.jbc.2023.104758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/11/2023] [Accepted: 04/15/2023] [Indexed: 04/30/2023] Open
Abstract
Microbial recognition is a key step in regulating the immune signaling pathways of multicellular organisms. Peptidoglycan, a component of the bacterial cell wall, exhibits immune stimulating activity in both plants and animals. Lysin motif domain (LysMD) family proteins are ancient peptidoglycan receptors that function in bacteriophage and plants. This report focuses on defining the role of LysMD-containing proteins in animals. Here, we characterize a novel transmembrane LysMD family protein. Loss-of-function mutations at the lysMD3/4 locus in Drosophila are associated with systemic innate immune activation following challenge, so we refer to this gene as immune active (ima). We show that Ima selectively binds peptidoglycan, is enriched in cell membranes, and is necessary to regulate terminal innate immune effectors through an NF-kB-dependent pathway. Hence, Ima fulfills the key criteria of a peptidoglycan pattern recognition receptor. The human Ima ortholog, hLysMD3, exhibits similar biochemical properties. Together, these findings establish LysMD3/4 as the founding member of a novel family of animal peptidoglycan recognition proteins.
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Affiliation(s)
- Mark Snee
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jason Wever
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jennifer Guyton
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Ryan Beehler-Evans
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Christine C Yokoyama
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Craig A Micchelli
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA.
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The Chloroplast Envelope of Angiosperms Contains a Peptidoglycan Layer. Cells 2023; 12:cells12040563. [PMID: 36831230 PMCID: PMC9954125 DOI: 10.3390/cells12040563] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 02/12/2023] Open
Abstract
Plastids in plants are assumed to have evolved from cyanobacteria as they have maintained several bacterial features. Recently, peptidoglycans, as bacterial cell wall components, have been shown to exist in the envelopes of moss chloroplasts. Phylogenomic comparisons of bacterial and plant genomes have raised the question of whether such structures are also part of chloroplasts in angiosperms. To address this question, we visualized canonical amino acids of peptidoglycan around chloroplasts of Arabidopsis and Nicotiana via click chemistry and fluorescence microscopy. Additional detection by different peptidoglycan-binding proteins from bacteria and animals supported this observation. Further Arabidopsis experiments with D-cycloserine and AtMurE knock-out lines, both affecting putative peptidoglycan biosynthesis, revealed a central role of this pathway in plastid genesis and division. Taken together, these results indicate that peptidoglycans are integral parts of plastids in the whole plant lineage. Elucidating their biosynthesis and further roles in the function of these organelles is yet to be achieved.
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Arenas T, Osorio A, Ginez LD, Camarena L, Poggio S. Bacterial cell-wall quantification by a modified low volume Nelson-Somogyi method and its use with different sugars. Can J Microbiol 2022; 68:295-302. [PMID: 35100051 DOI: 10.1139/cjm-2021-0238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The study of peptidoglycan binding proteins frequently requires in vitro binding assays in which the isolated peptidoglycan used as substrate has to be carefully quantified. Here we describe an easy and sensitive assay for the quantification of peptidoglycan based on a modified Nelson-Somogyi reducing sugar assay. We report the response of this assay to different common sugars and adapt its use to peptidoglycan samples that have been subjected to acid hydrolysis. This method showed a better sensitivity than the peptidoglycan quantification method based on the acid detection of diaminopimelic acid. The method described in this work besides being valuable in the characterization of peptidoglycan binding proteins, is also useful for quantification of reducing monosaccharides or of polysaccharides after acid or hydrolysis.
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Affiliation(s)
- Thelma Arenas
- Universidad Nacional Autónoma de México, 7180, Depto. Biología Molecular y Biotecnología, Ciudad de Mexico, Mexico;
| | - Aurora Osorio
- Universidad Nacional Autónoma de México, 7180, Depto. Biología Molecular y Biotecnología, Ciudad de Mexico, Mexico;
| | - Luis David Ginez
- National Autonomous University of Mexico, 7180, Molecular Biology and Biotechnology, Ciudad de Mexico, Mexico, 04510;
| | - Laura Camarena
- Universidad Nacional Autonoma de Mexico, 7180, Instituto de Investigaciones Biomédicas, Ciudad de Mexico, Ciudad de México, Mexico;
| | - Sebastian Poggio
- Universidad Nacional Autonoma de Mexico Instituto de Investigaciones Biomedicas, 61738, Biologia Molecular y Biotecnologia, Ciudad de Mexico, Ciudad de Mexico, Mexico;
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