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Khameneh HJ, Bolis M, Ventura PMO, Cassanmagnago GA, Fischer BA, Zenobi A, Guerra J, Buzzago I, Bernasconi M, Zaman GJR, Rinaldi A, Moro SG, Sallusto F, Baulier E, Pasquali C, Guarda G. The bacterial lysate OM-85 engages Toll-like receptors 2 and 4 triggering an immunomodulatory gene signature in human myeloid cells. Mucosal Immunol 2024; 17:346-358. [PMID: 38447907 DOI: 10.1016/j.mucimm.2024.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 02/02/2024] [Accepted: 02/26/2024] [Indexed: 03/08/2024]
Abstract
OM-85 is a bacterial lysate used in clinical practice to reduce duration and frequency of recurrent respiratory tract infections. Whereas knowledge of its regulatory effects in vivo has substantially advanced, the mechanisms of OM-85 sensing remain inadequately addressed. Here, we show that the immune response to OM-85 in the mouse is largely mediated by myeloid immune cells through Toll-like receptor (TLR) 4 in vitro and in vivo. Instead, in human immune cells, TLR2 and TLR4 orchestrate the response to OM-85, which binds to both receptors as shown by surface plasmon resonance assay. Ribonucleic acid-sequencing analyses of human monocyte-derived dendritic cells reveal that OM-85 triggers a pro-inflammatory signature and a unique gene set, which is not induced by canonical agonists of TLR2 or TLR4 and comprises tolerogenic genes. A largely overlapping TLR2/4-dependent gene signature was observed in individual subsets of primary human airway myeloid cells, highlighting the robust effects of OM-85. Collectively, our results suggest caution should be taken when relating murine studies on bacterial lysates to humans. Furthermore, our data shed light on how a standardized bacterial lysate shapes the response through TLR2 and TLR4, which are crucial for immune response, trained immunity, and tolerance.
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Affiliation(s)
- Hanif J Khameneh
- Università della Svizzera Italiana (USI), Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Bellinzona, Switzerland.
| | - Marco Bolis
- Università della Svizzera Italiana (USI), Faculty of Biomedical Sciences, Institute of Oncology Research, Bellinzona, Switzerland; Computational Oncology Unit, Department of Oncology, Istituto di Richerche Farmacologiche 'Mario Negri' IRCCS, Milano, Italy; Bioinformatics Core Unit, Swiss Institute of Bioinformatics, Bellinzona, Switzerland
| | - Pedro M O Ventura
- Università della Svizzera Italiana (USI), Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Bellinzona, Switzerland
| | - Giada A Cassanmagnago
- Computational Oncology Unit, Department of Oncology, Istituto di Richerche Farmacologiche 'Mario Negri' IRCCS, Milano, Italy
| | - Berenice A Fischer
- Università della Svizzera Italiana (USI), Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Bellinzona, Switzerland
| | - Alessandro Zenobi
- Università della Svizzera Italiana (USI), Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Bellinzona, Switzerland
| | - Jessica Guerra
- Università della Svizzera Italiana (USI), Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Bellinzona, Switzerland
| | - Irene Buzzago
- Università della Svizzera Italiana (USI), Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Bellinzona, Switzerland
| | - Maurizio Bernasconi
- Pulmonology Division, Ente Ospedaliero Cantonale (EOC), Ospedale Regionale di Bellinzona e Valli (ORBV), Bellinzona, Switzerland
| | | | - Andrea Rinaldi
- Università della Svizzera Italiana (USI), Faculty of Biomedical Sciences, Institute of Oncology Research, Bellinzona, Switzerland
| | - Simone G Moro
- Università della Svizzera Italiana (USI), Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Bellinzona, Switzerland
| | - Federica Sallusto
- Università della Svizzera Italiana (USI), Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Bellinzona, Switzerland; Institute of Microbiology, ETH Zurich, Zurich, Switzerland
| | - Edouard Baulier
- OM Pharma SA, Department of Preclinical Research, Meyrin, Switzerland
| | | | - Greta Guarda
- Università della Svizzera Italiana (USI), Faculty of Biomedical Sciences, Institute for Research in Biomedicine, Bellinzona, Switzerland.
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He Y, Ling Y, Zhang Z, Mertens RT, Cao Q, Xu X, Guo K, Shi Q, Zhang X, Huo L, Wang K, Guo H, Shen W, Shen M, Feng W, Xiao P. Butyrate reverses ferroptosis resistance in colorectal cancer by inducing c-Fos-dependent xCT suppression. Redox Biol 2023; 65:102822. [PMID: 37494767 PMCID: PMC10388208 DOI: 10.1016/j.redox.2023.102822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/28/2023] Open
Abstract
Ferroptosis has emerged to be a promising approach in cancer therapies; however, colorectal cancer (CRC) is relatively insensitive to ferroptosis. Exactly how the gut microenvironment impacts the ferroptotic sensitivity of CRC remains unknown. Herein, by performing metabolomics, we discovered that butyrate concentrations were significantly decreased in CRC patients. Butyrate supplementation sensitized CRC mice to ferroptosis induction, showing great in vivo translatability. Particularly, butyrate treatment reduced ferroptotic resistance of cancer stem cells. Mechanistically, butyrate inhibited xCT expression and xCT-dependent glutathione synthesis. Moreover, we identified c-Fos as a novel xCT suppressor, and further elucidated that butyrate induced c-Fos expression via disrupting class I HDAC activity. In CRC patients, butyrate negatively correlated with tumor xCT expression and positively correlated with c-Fos expression. Finally, butyrate was found to boost the pro-ferroptotic function of oxaliplatin (OXA). Immunohistochemistry data showed that OXA non-responders exhibited higher xCT expression compared to OXA responders. Hence, butyrate supplementation is a promising approach to break the ferroptosis resistance in CRC.
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Affiliation(s)
- Ying He
- Central Laboratory, The First Affiliated Hospital of Huzhou University, Huzhou, 313000, China; Huzhou Key Laboratory of Translational Medicine, The First People's Hospital of Huzhou, Huzhou, 313000, China
| | - Yuhang Ling
- Central Laboratory, The First Affiliated Hospital of Huzhou University, Huzhou, 313000, China; Huzhou Key Laboratory of Translational Medicine, The First People's Hospital of Huzhou, Huzhou, 313000, China
| | - Zhiyong Zhang
- Department of Colorectal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | | | - Qian Cao
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China; Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China
| | - Xutao Xu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China
| | - Ke Guo
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China
| | - Qian Shi
- Central Laboratory, The First Affiliated Hospital of Huzhou University, Huzhou, 313000, China; Huzhou Key Laboratory of Translational Medicine, The First People's Hospital of Huzhou, Huzhou, 313000, China
| | - Xilin Zhang
- Central Laboratory, The First Affiliated Hospital of Huzhou University, Huzhou, 313000, China; Huzhou Key Laboratory of Translational Medicine, The First People's Hospital of Huzhou, Huzhou, 313000, China
| | - Lixia Huo
- Central Laboratory, The First Affiliated Hospital of Huzhou University, Huzhou, 313000, China; Huzhou Key Laboratory of Translational Medicine, The First People's Hospital of Huzhou, Huzhou, 313000, China
| | - Kan Wang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China
| | - Huihui Guo
- Central Laboratory, The First Affiliated Hospital of Huzhou University, Huzhou, 313000, China; Huzhou Key Laboratory of Translational Medicine, The First People's Hospital of Huzhou, Huzhou, 313000, China
| | - Weiyun Shen
- Central Laboratory, The First Affiliated Hospital of Huzhou University, Huzhou, 313000, China; Huzhou Key Laboratory of Translational Medicine, The First People's Hospital of Huzhou, Huzhou, 313000, China
| | - Manlu Shen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China
| | - Wenming Feng
- Central Laboratory, The First Affiliated Hospital of Huzhou University, Huzhou, 313000, China; Huzhou Key Laboratory of Translational Medicine, The First People's Hospital of Huzhou, Huzhou, 313000, China.
| | - Peng Xiao
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China; Inflammatory Bowel Disease Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China; Institute of Immunology, Zhejiang University School of Medicine, 310058, Hangzhou, China; The Key Laboratory for Immunity and Inflammatory Diseases of Zhejiang Province, Hangzhou, 310058, China.
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3
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Chen H, Zhang L, Yue F, Cui C, Li Y, Zhang Q, Liang L, Meng L, Zhang C. Effects of assisted reproductive technology on gene expression in heart and spleen tissues of adult offspring mouse. Front Endocrinol (Lausanne) 2023; 14:1035161. [PMID: 37065763 PMCID: PMC10098333 DOI: 10.3389/fendo.2023.1035161] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 03/10/2023] [Indexed: 04/18/2023] Open
Abstract
OBJECTIVES Assisted reproductive technology (ART) is an important part of reproductive medicine, whose possible effects on offspring's health have drawn widespread attention in recent years. However, relevant studies are limited to postnatal short-term follow-up and lack of diverse sample sources analysis other than blood. METHODS In this study, a mouse model was used to explore the effects of ART on fetal development and gene expression in the organs of offspring in the adulthood using next-generation sequencing. The sequencing results were then analyzed. RESULTS The results showed that it caused abnormal expression in 1060 genes and 179 genes in the heart and spleen, respectively. Differentially expressed genes (DEGs) in the heart are mainly enriched in RNA synthesis and processing, and the cardiovascular system development also shows enrichment. STRING analysis identified Ccl2, Ptgs2, Rock1, Mapk14, Agt, and Wnt5a as the core interacting factors. DEGs in the spleen are significantly enriched in anti-infection and immune responses, which include the core factors Fos, Jun and Il1r2. Further exploration revealed the abnormal expression of 42 and 5 epigenetic modifiers in the heart and spleen, respectively. The expression of the imprinted genes Dhcr7, Igf2, Mest and Smoc1 decreased in the hearts of ART offspring, and the DNA methylation levels of Igf2- and Mest-imprinting control regions (ICRs) increased abnormally. CONCLUSION In the mouse model, ART can interfere with the gene expression pattern in the heart and spleen of the adult offspring and that these changes are related to the aberrant expression of epigenetic regulators.
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Affiliation(s)
- Huanhuan Chen
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan Provincial People’s Hospital of Henan University, Zhengzhou, Henan, China
- Henan Joint International Research Laboratory of Reproductive Bioengineering, Zhengzhou, Henan, China
| | - Lei Zhang
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan Provincial People’s Hospital of Henan University, Zhengzhou, Henan, China
- Henan Joint International Research Laboratory of Reproductive Bioengineering, Zhengzhou, Henan, China
| | - Feng Yue
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan Provincial People’s Hospital of Henan University, Zhengzhou, Henan, China
- Henan Joint International Research Laboratory of Reproductive Bioengineering, Zhengzhou, Henan, China
| | - Chenchen Cui
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan Provincial People’s Hospital of Henan University, Zhengzhou, Henan, China
- Henan Joint International Research Laboratory of Reproductive Bioengineering, Zhengzhou, Henan, China
| | - Yan Li
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan Provincial People’s Hospital of Henan University, Zhengzhou, Henan, China
- Henan Joint International Research Laboratory of Reproductive Bioengineering, Zhengzhou, Henan, China
| | - Qingwen Zhang
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan Provincial People’s Hospital of Henan University, Zhengzhou, Henan, China
- Henan Joint International Research Laboratory of Reproductive Bioengineering, Zhengzhou, Henan, China
| | - Linlin Liang
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan Provincial People’s Hospital of Henan University, Zhengzhou, Henan, China
- Henan Joint International Research Laboratory of Reproductive Bioengineering, Zhengzhou, Henan, China
| | - Li Meng
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan Provincial People’s Hospital of Henan University, Zhengzhou, Henan, China
- Henan Joint International Research Laboratory of Reproductive Bioengineering, Zhengzhou, Henan, China
- *Correspondence: Li Meng, ; Cuilian Zhang,
| | - Cuilian Zhang
- Reproductive Medicine Center, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan Provincial People’s Hospital of Henan University, Zhengzhou, Henan, China
- Henan Joint International Research Laboratory of Reproductive Bioengineering, Zhengzhou, Henan, China
- *Correspondence: Li Meng, ; Cuilian Zhang,
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Blair L, Pattison MJ, Chakravarty P, Papoutsopoulou S, Bakiri L, Wagner EF, Smale S, Ley SC. TPL-2 Inhibits IFN-β Expression via an ERK1/2-TCF-FOS Axis in TLR4-Stimulated Macrophages. THE JOURNAL OF IMMUNOLOGY 2022; 208:941-954. [PMID: 35082159 PMCID: PMC9012084 DOI: 10.4049/jimmunol.2100213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 10/20/2021] [Indexed: 12/29/2022]
Abstract
TPL-2 activation of ERK1/2 regulates gene expression in TLR-stimulated macrophages. TPL-2 regulates transcription via ERK1/2 phosphorylation of ternary complex factors. TPL-2 inhibits Ifnb1 transcription via ternary complex factor–induced Fos mRNA expression.
TPL-2 kinase plays an important role in innate immunity, activating ERK1/2 MAPKs in myeloid cells following TLR stimulation. We investigated how TPL-2 controls transcription in TLR4-stimulated mouse macrophages. TPL-2 activation of ERK1/2 regulated expression of genes encoding transcription factors, cytokines, chemokines, and signaling regulators. Bioinformatics analysis of gene clusters most rapidly induced by TPL-2 suggested that their transcription was mediated by the ternary complex factor (TCF) and FOS transcription factor families. Consistently, TPL-2 induced ERK1/2 phosphorylation of the ELK1 TCF and the expression of TCF target genes. Furthermore, transcriptomic analysis of TCF-deficient macrophages demonstrated that TCFs mediate approximately half of the transcriptional output of TPL-2 signaling, partially via induced expression of secondary transcription factors. TPL-2 signaling and TCFs were required for maximal TLR4-induced FOS expression. Comparative analysis of the transcriptome of TLR4-stimulated Fos−/− macrophages indicated that TPL-2 regulated a significant fraction of genes by controlling FOS expression levels. A key function of this ERK1/2-TCF-FOS pathway was to mediate TPL-2 suppression of type I IFN signaling, which is essential for host resistance against intracellular bacterial infection.
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Affiliation(s)
- Louise Blair
- Immune Cell Signalling Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Michael J Pattison
- Immune Cell Signalling Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Probir Chakravarty
- Bioinformatics and Biostatistics Technology Platform, The Francis Crick Institute, London, United Kingdom
| | | | - Latifa Bakiri
- Laboratory of Genes and Disease, Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Erwin F Wagner
- Laboratory of Genes and Disease, Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
- Laboratory of Genes and Disease, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Stephen Smale
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, CA; and
| | - Steven C Ley
- Immune Cell Signalling Laboratory, The Francis Crick Institute, London, United Kingdom;
- Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
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5
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Redweik GAJ, Kogut MH, Arsenault RJ, Lyte M, Mellata M. Reserpine improves Enterobacteriaceae resistance in chicken intestine via neuro-immunometabolic signaling and MEK1/2 activation. Commun Biol 2021; 4:1359. [PMID: 34862463 PMCID: PMC8642538 DOI: 10.1038/s42003-021-02888-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 11/10/2021] [Indexed: 02/07/2023] Open
Abstract
Salmonella enterica persist in the chicken gut by suppressing inflammatory responses via expansion of intestinal regulatory T cells (Tregs). In humans, T cell activation is controlled by neurochemical signaling in Tregs; however, whether similar neuroimmunological signaling occurs in chickens is currently unknown. In this study, we explore the role of the neuroimmunological axis in intestinal Salmonella resistance using the drug reserpine, which disrupts intracellular storage of catecholamines like norepinephrine. Following reserpine treatment, norepinephrine release was increased in both ceca explant media and Tregs. Similarly, Salmonella killing was greater in reserpine-treated explants, and oral reserpine treatment reduced the level of intestinal Salmonella Typhimurium and other Enterobacteriaceae in vivo. These antimicrobial responses were linked to an increase in antimicrobial peptide and IL-2 gene expression as well as a decrease in CTLA-4 gene expression. Globally, reserpine treatment led to phosphorylative changes in epidermal growth factor receptor (EGFR), mammalian target of rapamycin (mTOR), and the mitogen-associated protein kinase 2(MEK2). Exogenous norepinephrine treatment alone increased Salmonella resistance, and reserpine-induced antimicrobial responses were blocked using beta-adrenergic receptor inhibitors, suggesting norepinephrine signaling is crucial in this mechanism. Furthermore, EGF treatment reversed reserpine-induced antimicrobial responses, whereas mTOR inhibition increased antimicrobial activities, confirming the roles of metabolic signaling in these responses. Finally, MEK1/2 inhibition suppressed reserpine, norepinephrine, and mTOR-induced antimicrobial responses. Overall, this study demonstrates a central role for MEK1/2 activity in reserpine induced neuro-immunometabolic signaling and subsequent antimicrobial responses in the chicken intestine, providing a means of reducing bacterial colonization in chickens to improve food safety.
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Affiliation(s)
- Graham A. J. Redweik
- grid.34421.300000 0004 1936 7312Department of Food Science and Human Nutrition, Iowa State University, Ames, IA USA ,grid.34421.300000 0004 1936 7312Interdepartmental Microbiology Graduate Program, Iowa State University, Ames, IA USA ,grid.266190.a0000000096214564Present Address: Molecular, Cellular & Developmental Biology, Colorado University-Boulder, Boulder, CO USA
| | - Michael H. Kogut
- grid.512846.c0000 0004 0616 2502Southern Plains Agricultural Research Center, USDA-ARS College Station, TX USA
| | - Ryan J. Arsenault
- grid.33489.350000 0001 0454 4791Department of Animal and Food Sciences, University of Delaware, Newark, DE USA
| | - Mark Lyte
- grid.34421.300000 0004 1936 7312Interdepartmental Microbiology Graduate Program, Iowa State University, Ames, IA USA ,grid.34421.300000 0004 1936 7312Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA USA
| | - Melha Mellata
- Department of Food Science and Human Nutrition, Iowa State University, Ames, IA, USA. .,Interdepartmental Microbiology Graduate Program, Iowa State University, Ames, IA, USA.
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Corrêa T, Feltes BC, Gonzalez EA, Baldo G, Matte U. Network Analysis Reveals Proteins Associated with Aortic Dilatation in Mucopolysaccharidoses. Interdiscip Sci 2021; 13:34-43. [PMID: 33475959 DOI: 10.1007/s12539-020-00406-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 11/25/2020] [Accepted: 12/03/2020] [Indexed: 06/12/2023]
Abstract
Mucopolysaccharidoses are caused by a deficiency of enzymes involved in the degradation of glycosaminoglycans. Heart diseases are a significant cause of morbidity and mortality in MPS patients, even in conditions in which enzyme replacement therapy is available. In this sense, cardiovascular manifestations, such as heart hypertrophy, cardiac function reduction, increased left ventricular chamber, and aortic dilatation, are among the most frequent. However, the downstream events which influence the heart dilatation process are unclear. Here, we employed systems biology tools together with transcriptomic data to investigate new elements that may be involved in aortic dilatation in Mucopolysaccharidoses syndrome. We identified candidate genes involved in biological processes related to inflammatory responses, deposition of collagen, and lipid accumulation in the cardiovascular system that may be involved in aortic dilatation in the Mucopolysaccharidoses I and VII. Furthermore, we investigated the molecular mechanisms of losartan treatment in Mucopolysaccharidoses I mice to underscore how this drug acts to prevent aortic dilation. Our data indicate that the association between the TGF-b signaling pathway, Fos, and Col1a1 proteins can play an essential role in aortic dilation's pathophysiology and its subsequent improvement by losartan treatment.
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Affiliation(s)
- Thiago Corrêa
- Gene Therapy Center, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos, 2350, Porto Alegre, 90035-903, Brazil
- Postgraduation Program on Genetics and Molecular Biology, Federal University of Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Bruno César Feltes
- Institute of Informatics, Federal University of Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Esteban Alberto Gonzalez
- Gene Therapy Center, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos, 2350, Porto Alegre, 90035-903, Brazil
- Postgraduation Program on Genetics and Molecular Biology, Federal University of Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Guilherme Baldo
- Gene Therapy Center, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos, 2350, Porto Alegre, 90035-903, Brazil
- Postgraduation Program on Genetics and Molecular Biology, Federal University of Rio Grande Do Sul, Porto Alegre, RS, Brazil
| | - Ursula Matte
- Gene Therapy Center, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos, 2350, Porto Alegre, 90035-903, Brazil.
- Postgraduation Program on Genetics and Molecular Biology, Federal University of Rio Grande Do Sul, Porto Alegre, RS, Brazil.
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7
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Ren B, Schmid M, Scheiner M, Mollenkopf HJ, Lucius R, Heitlinger E, Gupta N. Toxoplasma and Eimeria co-opt the host cFos expression for intracellular development in mammalian cells. Comput Struct Biotechnol J 2021; 19:719-731. [PMID: 33510872 PMCID: PMC7817532 DOI: 10.1016/j.csbj.2020.12.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 12/30/2020] [Accepted: 12/31/2020] [Indexed: 12/05/2022] Open
Abstract
Gene expression profiles differ significantly between Toxoplasma and Eimeria-infected host cells. Several distinct and shared host-signaling cascades are regulated by coccidian parasites. cFos is one of the few host transcripts mutually regulated during infection by both pathogens. Host cFos is required for optimal in vitro development of E. falciformis and T. gondii. Transcriptomics of parasitized wild-type and cFos-/- host cells reveals a perturbation of cFos network.
Successful asexual reproduction of intracellular pathogens depends on their potential to exploit host resources and subvert antimicrobial defense. In this work, we deployed two prevalent apicomplexan parasites of mammalian cells, namely Toxoplasma gondii and Eimeria falciformis, to identify potential host determinants of infection. Expression analyses of the young adult mouse colonic (YAMC) epithelial cells upon infection by either parasite showed regulation of several distinct transcripts, indicating that these two pathogens program their intracellular niches in a tailored manner. Conversely, parasitized mouse embryonic fibroblasts (MEFs) displayed a divergent transcriptome compared to corresponding YAMC epithelial cells, suggesting that individual host cells mount a fairly discrete response when encountering a particular pathogen. Among several host transcripts similarly altered by T. gondii and E. falciformis, we identified cFos, a master transcription factor, that was consistently induced throughout the infection. Indeed, asexual growth of both parasites was strongly impaired in MEF host cells lacking cFos expression. Last but not the least, our differential transcriptomics of the infected MEFs (parental and cFos-/- mutant) and YAMC epithelial cells disclosed a cFos-centered network, underlying signal cascades, as well as a repertoire of nucleotides- and ion-binding proteins, which presumably act in consort to acclimatize the mammalian cell and thereby facilitate the parasite development.
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Affiliation(s)
- Bingjian Ren
- Department of Molecular Parasitology, Institute of Biology, Humboldt University, Berlin, Germany
| | - Manuela Schmid
- Department of Molecular Parasitology, Institute of Biology, Humboldt University, Berlin, Germany
| | - Mattea Scheiner
- Department of Molecular Parasitology, Institute of Biology, Humboldt University, Berlin, Germany
| | - Hans-Joachim Mollenkopf
- Microarray and Genomics Core Facility, Max-Planck Institute for Infection Biology, Berlin, Germany
| | - Richard Lucius
- Department of Molecular Parasitology, Institute of Biology, Humboldt University, Berlin, Germany
| | - Emanuel Heitlinger
- Department of Molecular Parasitology, Institute of Biology, Humboldt University, Berlin, Germany.,Research Group Ecology and Evolution of Parasite Host Interactions, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
| | - Nishith Gupta
- Department of Molecular Parasitology, Institute of Biology, Humboldt University, Berlin, Germany.,Department of Biological Sciences, Birla Institute of Technology and Science Pilani (BITS-P), Hyderabad, India
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8
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Maia J, Otake AH, Poças J, Carvalho AS, Beck HC, Magalhães A, Matthiesen R, Strano Moraes MC, Costa-Silva B. Transcriptome Reprogramming of CD11b + Bone Marrow Cells by Pancreatic Cancer Extracellular Vesicles. Front Cell Dev Biol 2020; 8:592518. [PMID: 33330473 PMCID: PMC7729189 DOI: 10.3389/fcell.2020.592518] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 10/27/2020] [Indexed: 12/12/2022] Open
Abstract
Pancreatic cancers (PC) are highly metastatic with poor prognosis, mainly due to delayed detection. We previously showed that PC-derived extracellular vesicles (EVs) act on macrophages residing in the liver, eliciting extracellular matrix remodeling in this organ and marked hepatic accumulation of CD11b+ bone marrow (BM) cells, which support PC liver metastasis. We here show that PC-EVs also bind to CD11b+ BM cells and induce the expansion of this cell population. Transcriptomic characterization of these cells shows that PC-EVs upregulate IgG and IgA genes, which have been linked to the presence of monocytes/macrophages in tumor microenvironments. We also report here the transcriptional downregulation of genes linked to monocyte/macrophage activation, trafficking, and expression of inflammatory molecules. Together, these results show for the first time the existence of a PC-BM communication axis mediated by EVs with a potential role in PC tumor microenvironments.
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Affiliation(s)
- Joana Maia
- Champalimaud Centre for the Unknown, Champalimaud Foundation, Lisbon, Portugal
- Graduate Program in Areas of Basic and Applied Biology, University of Porto, Porto, Portugal
| | - Andreia Hanada Otake
- Champalimaud Centre for the Unknown, Champalimaud Foundation, Lisbon, Portugal
- Center for Translational Research in Oncology, Instituto do Câncer do Estado de São Paulo, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Juliana Poças
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IPATIMUP – Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
| | - Ana Sofia Carvalho
- Computational and Experimental Biology Group, CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Faculdade de Ciencias Medicas, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - Hans Christian Beck
- Centre for Clinical Proteomics, Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
| | - Ana Magalhães
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IPATIMUP – Instituto de Patologia e Imunologia Molecular da Universidade do Porto, Porto, Portugal
| | - Rune Matthiesen
- Computational and Experimental Biology Group, CEDOC, Chronic Diseases Research Centre, NOVA Medical School, Faculdade de Ciencias Medicas, Universidade NOVA de Lisboa, Lisbon, Portugal
| | | | - Bruno Costa-Silva
- Champalimaud Centre for the Unknown, Champalimaud Foundation, Lisbon, Portugal
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9
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de Marcken M, Dhaliwal K, Danielsen AC, Gautron AS, Dominguez-Villar M. TLR7 and TLR8 activate distinct pathways in monocytes during RNA virus infection. Sci Signal 2019; 12:12/605/eaaw1347. [DOI: 10.1126/scisignal.aaw1347] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Human blood CD14+monocytes are bone marrow–derived white blood cells that sense and respond to pathogens. Although innate immune activation by RNA viruses preferentially occurs through intracellular RIG-I–like receptors, other nucleic acid recognition receptors, such as Toll-like receptors (TLRs), play a role in finely programming the final outcome of virus infection. Here, we dissected how human monocytes respond to infection with either Coxsackie (CV), encephalomyocarditis (EMCV), influenza A (IAV), measles (MV), Sendai (SV), or vesicular stomatitis (VSV) virus. We found that in monocytes, type I interferon (IFN) and cytokine responses to infection were RNA virus specific and differentially involved TLR7 and TLR8, which sense single-stranded RNA. These TLRs activated distinct signaling cascades in monocytes, which correlated with differences in the production of cytokines involved in the polarization of CD4+T helper cells. Furthermore, we found that TLR7 signaling specifically increased expression of the transcription factor FOSL1, which reduced IL-27 and TNFα production by monocytes. TLR7, but not TLR8, activation of monocytes also stimulated Ca2+flux that prevented type I IFN responses. Our work demonstrates that in human monocytes, TLR7 and TLR8 triggered different signaling pathways that contribute to distinct phenotypes during RNA virus infection. In addition, we defined individual targets within these pathways that promoted specific T helper and antiviral responses.
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Affiliation(s)
- Marine de Marcken
- Department of Neurology, Yale School of Medicine, New Haven, CT 06520, USA
| | - Khushwant Dhaliwal
- Department of Neurology, Yale School of Medicine, New Haven, CT 06520, USA
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10
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Paukszto L, Mikolajczyk A, Szeszko K, Smolinska N, Jastrzebski JP, Kaminski T. Transcription analysis of the response of the porcine adrenal cortex to a single subclinical dose of lipopolysaccharide from Salmonella Enteritidis. Int J Biol Macromol 2019; 141:1228-1245. [PMID: 31520703 DOI: 10.1016/j.ijbiomac.2019.09.067] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/03/2019] [Accepted: 09/09/2019] [Indexed: 12/20/2022]
Abstract
Lipopolysaccharide (LPS) is a bacterial endotoxin which can participate in the induction of inflammatory responses. LPS may also play a significant role in some neurodegenerative, oncological and metabolic disorders. The aim of the current study was to determine the effect of a subclinical low single dose of LPS from Salmonella Enteritidis administrated in vivo on the transcriptome of porcine adrenal cortex cells, especially gene expression levels, long non-coding RNA (lncRNA) profiles, alternative splicing events and RNA editing sites using RNA-seq technology. The subclinical dose of LPS changed the expression of 354 genes, 27 lncRNA loci and other unclassified RNAs. An analysis of alternative splicing events revealed 104 genes with differentially expressed splice junction sites, and the single nucleotide variant calling approach supported the identification of 376 canonical RNA editing candidates and 7249 allele-specific expression variants. The obtained results suggest that the RIG-I-like receptor signaling pathway, may play a more important role than the Toll-like signaling pathway after the administration of a subclinical dose of LPS. Single subclinical dose of LPS can affect the expression profiles of genes coding peptide hormones, steroidogenic enzymes and transcriptional factors, and modulate the endocrine functions of the gland.
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Affiliation(s)
- Lukasz Paukszto
- Department of Plant Physiology, Genetics and Biotechnology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland.
| | - Anita Mikolajczyk
- Department of Public Health, Faculty of Health Sciences, Collegium Medicum, University of Warmia and Mazury in Olsztyn, Warszawska 30, 10-082 Olsztyn, Poland.
| | - Karol Szeszko
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland
| | - Nina Smolinska
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland.
| | - Jan P Jastrzebski
- Department of Plant Physiology, Genetics and Biotechnology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland
| | - Tadeusz Kaminski
- Department of Animal Anatomy and Physiology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland.
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11
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Hop HT, Arayan LT, Huy TXN, Reyes AWB, Vu SH, Min W, Lee HJ, Rhee MH, Chang HH, Kim S. The Key Role of c-Fos for Immune Regulation and Bacterial Dissemination in Brucella Infected Macrophage. Front Cell Infect Microbiol 2018; 8:287. [PMID: 30186773 PMCID: PMC6110913 DOI: 10.3389/fcimb.2018.00287] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 07/27/2018] [Indexed: 12/25/2022] Open
Abstract
The cellular oncogene c-Fos (c-Fos) is a component of activator protein 1 (AP1), a master transcriptional regulator of cells. The suppression of c-Fos signaling by siRNA treatment resulted in significant induction of TLR4, which subsequently activates p38 and ERK1/2 mitogen-activated protein kinases (MAPKs) and enhances F-actin polymerization, leading to an increase in B. abortus phagocytosis. During B. abortus infection, c-Fos signaling is induced, which activates the downstream innate-immunity signaling cascade for bacterial clearance. The inhibition of c-Fos signaling led to increased production of interleukin 10 (IL-10), which partially suppressed lysosome-mediated killing, resulting in increased survival of B. abortus inside macrophages. We present evidence of the regulatory role played by the c-Fos pathway in proliferation during B. abortus infection; however, this was independent of the anti-Brucella effect of this pathway. Another finding is the essential contribution of c-Fos/TRAIL to infected-cell necrosis, which is a key event in bacterial dissemination. These data provide the mechanism via which c-Fos participates in host defense mechanisms against Brucella infection and in bacterial dissemination by macrophages.
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Affiliation(s)
- Huynh T Hop
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Lauren T Arayan
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Tran X N Huy
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Alisha W B Reyes
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Son H Vu
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - WonGi Min
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Hu J Lee
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Man H Rhee
- College of Veterinary Medicine, Kyungpook National University, Daegu, South Korea
| | - Hong H Chang
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea
| | - Suk Kim
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea.,Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea
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12
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Kittaka M, Mayahara K, Mukai T, Yoshimoto T, Yoshitaka T, Gorski JP, Ueki Y. Cherubism Mice Also Deficient in c-Fos Exhibit Inflammatory Bone Destruction Executed by Macrophages That Express MMP14 Despite the Absence of TRAP+ Osteoclasts. J Bone Miner Res 2018; 33:167-181. [PMID: 28914985 PMCID: PMC5771992 DOI: 10.1002/jbmr.3295] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 08/28/2017] [Accepted: 09/07/2017] [Indexed: 11/10/2022]
Abstract
Currently, it is believed that osteoclasts positive for tartrate-resistant acid phosphatase (TRAP+) are the exclusive bone-resorbing cells responsible for focal bone destruction in inflammatory arthritis. Recently, a mouse model of cherubism (Sh3bp2KI/KI ) with a homozygous gain-of-function mutation in the SH3-domain binding protein 2 (SH3BP2) was shown to develop auto-inflammatory joint destruction. Here, we demonstrate that Sh3bp2KI/KI mice also deficient in the FBJ osteosarcoma oncogene (c-Fos) still exhibit noticeable bone erosion at the distal tibia even in the absence of osteoclasts at 12 weeks old. Levels of serum collagen I C-terminal telopeptide (ICTP), a marker of bone resorption generated by matrix metalloproteinases (MMPs), were elevated, whereas levels of serum cross-linked C-telopeptide (CTX), another resorption marker produced by cathepsin K, were not increased. Collagenolytic MMP levels were increased in the inflamed joints of the Sh3bp2KI/KI mice deficient in c-Fos. Resorption pits contained a large number of F4/80+ macrophages and genetic depletion of macrophages rescued these erosive changes. Importantly, administration of NSC405020, an MMP14 inhibitor targeted to the hemopexin (PEX) domain, suppressed bone erosion in c-Fos-deficient Sh3bp2KI/KI mice. After activation of the NF-κB pathway, macrophage colony-stimulating factor (M-CSF)-dependent macrophages from c-Fos-deficient Sh3bp2KI/KI mice expressed increased amounts of MMP14 compared with wild-type macrophages. Interestingly, receptor activator of NF-κB ligand (RANKL)-deficient Sh3bp2KI/KI mice failed to show notable bone erosion, whereas c-Fos deletion did restore bone erosion to the RANKL-deficient Sh3bp2KI/KI mice, suggesting that osteolytic transformation of macrophages requires both loss-of-function of c-Fos and gain-of-function of SH3BP2 in this model. These data provide the first genetic evidence that cells other than osteoclasts can cause focal bone destruction in inflammatory bone disease and suggest that MMP14 is a key mediator conferring pathological bone-resorbing capacity on c-Fos-deficient Sh3bp2KI/KI macrophages. In summary, the paradigm that osteoclasts are the exclusive cells executing inflammatory bone destruction may need to be reevaluated based on our findings with c-Fos-deficient cherubism mice lacking osteoclasts. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Mizuho Kittaka
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Kotoe Mayahara
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA.,Department of Orthodontics, Nihon University, School of Dentistry, Tokyo, Japan
| | - Tomoyuki Mukai
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Tetsuya Yoshimoto
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Teruhito Yoshitaka
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Jeffrey P Gorski
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA.,University of Missouri-Kansas City (UMKC) Center of Excellence in the Study of Dental and Musculoskeletal Tissues (CEMT), Kansas City, MO, USA
| | - Yasuyoshi Ueki
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA.,University of Missouri-Kansas City (UMKC) Center of Excellence in the Study of Dental and Musculoskeletal Tissues (CEMT), Kansas City, MO, USA
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13
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ORF45-Mediated Prolonged c-Fos Accumulation Accelerates Viral Transcription during the Late Stage of Lytic Replication of Kaposi's Sarcoma-Associated Herpesvirus. J Virol 2015; 89:6895-906. [PMID: 25903346 DOI: 10.1128/jvi.00274-15] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 04/15/2015] [Indexed: 02/04/2023] Open
Abstract
UNLABELLED Kaposi's sarcoma-associated herpesvirus (KSHV) encodes multiple viral proteins that activate extracellular signal-regulated kinase (ERK)-mitogen-activated protein kinase (MAPK) cascades. One of these viral proteins, ORF45, mediates sustained ERK-p90 ribosomal S6 kinase (RSK) activation during KSHV lytic replication and facilitates viral translation through the phosphorylation of a eukaryotic translation initiation factor, eIF4B. The importance of ERK-RSK activation for KSHV viral transcription has been shown; however, which transcription factor senses the sustained MAPK signaling and leads to viral transcription remains poorly understood. Here we show that the presence of ORF45 leads to the prolonged accumulation of c-Fos during the late stage of KSHV lytic replication through ERK-RSK-dependent phosphorylation and stabilization and that the depletion of c-Fos disrupts viral lytic transcription. Genome-wide screening revealed that c-Fos directly binds to multiple viral gene promoters and enhances viral transcription. Mutation of the ERK-RSK phosphorylation sites of c-Fos restrains KSHV lytic gene expression and virion production. These results indicate that the prolonged accumulation of c-Fos promotes the progression of viral transcription from early to late stages and accelerates viral lytic replication upon sustained ORF45-ERK-RSK activation during the KSHV lytic life cycle. IMPORTANCE During KSHV lytic replication, transient activation and sustained activation of ERK-RSK induce viral immediate early (IE) transcription and late transcription, respectively. Studies have revealed that ERK-RSK activates several transcription factors involved in IE gene expression, including Ets, AP-1, CREB, and C/EBP, which lead to the transient ERK-RSK activation-dependent IE transcription. Whereas c-Fos acts as a sensor of sustained ERK-RSK activation, ORF45-ERK-RSK signaling mediates c-Fos phosphorylation and accumulation during late KSHV lytic replication, consequently promoting viral transcription through the direct binding of c-Fos to multiple KSHV promoters. This finding indicates that c-Fos mediates distinct viral transcriptional progression following sustained ERK-RSK signaling during the KSHV lytic life cycle.
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14
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Maruyama K, Uematsu S, Kondo T, Takeuchi O, Martino MM, Kawasaki T, Akira S. Strawberry notch homologue 2 regulates osteoclast fusion by enhancing the expression of DC-STAMP. J Exp Med 2013; 210:1947-60. [PMID: 23980096 PMCID: PMC3782043 DOI: 10.1084/jem.20130512] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Osteoclasts are multinucleated cells formed by fusion of mononuclear precursors in response to receptor activator of nuclear factor κB (NF-κB) ligand (RANKL). We found that RANKL induced expression of the DExD/H helicase family corepressor strawberry notch homologue 2 (Sbno2). Previous in vitro studies showed that Sbno2 is induced by IL-10 and is involved in NF-κB repression. However, the role of Sbno2 in vivo and its pleiotropic functions are unknown. Sbno2 gene targeting resulted in normal NF-κB activation by TLR ligands. However, Sbno2-deficient mice exhibited increased bone mass due to impaired osteoclast fusion. Expression of dendritic cell–specific transmembrane protein (DC-STAMP), a critical player in osteoclast fusion, was significantly attenuated, and cell fusion of Sbno2-deficient osteoclasts was rescued by DC-STAMP. Sbno2 directly bound to T cell acute lymphocytic leukemia 1 (Tal1) and attenuated its inhibition of DC-STAMP expression, leading to activation of the DC-STAMP promoter by microphthalmia-associated transcription factor (MITF). Thus, Sbno2 plays a pivotal role in bone homeostasis in vivo by fine-tuning osteoclast fusion.
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Affiliation(s)
- Kenta Maruyama
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (IFReC), Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Satoshi Uematsu
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (IFReC), Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
- Division of Innate Immune Regulation, International Research and Development Center for Mucosal Vaccine, Institute for Medical Science, University of Tokyo, Tokyo 108-8639, Japan
| | - Takeshi Kondo
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (IFReC), Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Osamu Takeuchi
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (IFReC), Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
- Laboratory of Infection and Prevention, Institute for Virus Research, Kyoto University, Kyoto 606-8507, Japan
| | - Mikaël M. Martino
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (IFReC), Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Takumi Kawasaki
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (IFReC), Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Shizuo Akira
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (IFReC), Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
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15
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Maruyama K, Fukasaka M, Vandenbon A, Saitoh T, Kawasaki T, Kondo T, Yokoyama KK, Kidoya H, Takakura N, Standley D, Takeuchi O, Akira S. The transcription factor Jdp2 controls bone homeostasis and antibacterial immunity by regulating osteoclast and neutrophil differentiation. Immunity 2012. [PMID: 23200825 DOI: 10.1016/j.immuni.2012.08.022] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Jdp2 is an AP-1 family transcription factor that regulates the epigenetic status of histones. Previous in vitro studies revealed that Jdp2 is involved in osteoclastogenesis. However, the roles of Jdp2 in vivo and its pleiotropic functions are largely unknown. Here we generated Jdp2(-/-) mice and discovered its crucial roles not only in bone metabolism but also in differentiation of neutrophils. Jdp2(-/-) mice exhibited osteopetrosis resulting from impaired osteoclastogenesis. Jdp2(-/-) neutrophils were morphologically normal but had impaired surface expression of Ly6G, bactericidal function, and apoptosis. We also found that ATF3 was an inhibitor of neutrophil differentiation and that Jdp2 directly suppresses its expression via inhibition of histone acetylation. Strikingly, Jdp2(-/-) mice were highly susceptible to Staphylococcus aureus and Candida albicans infection. Thus, Jdp2 plays pivotal roles in in vivo bone homeostasis and host defense by regulating osteoclast and neutrophil differentiation.
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Affiliation(s)
- Kenta Maruyama
- Laboratory of Host Defense, Osaka University, Osaka, Japan
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16
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Swaggerty CL, He H, Genovese KJ, Pevzner IY, Kogut MH. Protein tyrosine kinase and mitogen-activated protein kinase signalling pathways contribute to differences in heterophil-mediated innate immune responsiveness between two lines of broilers. Avian Pathol 2011; 40:289-97. [DOI: 10.1080/03079457.2011.565310] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Takada Y, Ray N, Ikeda E, Kawaguchi T, Kuwahara M, Wagner EF, Matsuo K. Fos proteins suppress dextran sulfate sodium-induced colitis through inhibition of NF-kappaB. THE JOURNAL OF IMMUNOLOGY 2009; 184:1014-21. [PMID: 20018614 DOI: 10.4049/jimmunol.0901196] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The Fos family proteins, c-Fos and Fra-1, are components of the dimeric transcription factor AP-1, which is typically composed of Fos and Jun family proteins. We have previously shown that mice lacking c-Fos (Fos(-/-) mice) respond more strongly to LPS injection than do wild-type (wt) controls. We then examined the sensitivity of Fos(-/-) mice to acute inflammatory stress in a dextran sulfate sodium (DSS)-induced colitis model. We found that Fos(-/-) mice exhibited more severe weight loss, bleeding, diarrhea, and colon shortening than did wt mice, in association with higher TNF-alpha production and NF-kappaB activity in colon segments of DSS-treated Fos(-/-) mice. Furthermore, NF-kappaB inhibition suppressed severe DSS-induced colitis in Fos(-/-) mice. In contrast, Fra-1 transgenic (Tg) mice responded poorly to LPS injection, and Fra-1-overexpressing macrophages and fibroblasts showed reduced production of proinflammatory cytokines, NO, and NF-kappaB activity. Remarkably, in the DSS-induced colitis model, Fra-1 Tg mice showed less severe clinical scores of colitis than did wt mice. Consistently, proinflammatory cytokine production and NF-kappaB activity in colon segments of DSS-treated Fra-1 Tg mice were lower than in wt controls. These findings reveal that the absence of c-Fos and overexpression of Fra-1 respectively enhance and suppress the activation of NF-kappaB in DSS-induced inflammatory stress. In this paper, we propose that AP-1 transcription factors containing c-Fos or Fra-1 are negative regulators of NF-kappaB-mediated stress responses.
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Affiliation(s)
- Yasunari Takada
- Department of Microbiology and Immunology, School of Medicine, Keio University, Tokyo, Japan
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18
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Morishita H, Saito F, Kayama H, Atarashi K, Kuwata H, Yamamoto M, Takeda K. Fra-1 negatively regulates lipopolysaccharide-mediated inflammatory responses. Int Immunol 2009; 21:457-65. [DOI: 10.1093/intimm/dxp015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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19
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Wilson CB, Ray M, Lutz M, Sharda D, Xu J, Hankey PA. The RON receptor tyrosine kinase regulates IFN-gamma production and responses in innate immunity. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2008; 181:2303-10. [PMID: 18684919 DOI: 10.4049/jimmunol.181.4.2303] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Receptor tyrosine kinases are emerging as a class of key regulators of innate immune responses. We have shown previously that the RON receptor tyrosine kinases (murine Stk), expressed on tissue-resident macrophages, inhibit classical macrophage activation while promoting hallmarks of alternative activation, thus regulating the critical balance between the inflammatory and wound-healing properties of activated macrophages. We have also shown previously that RON(-/-) mice are more susceptible to in vivo endotoxin challenge than wild-type mice, suggesting that the expression of this receptor confers a degree of endotoxin resistance to these animals. Here we demonstrate that, in response to in vivo LPS challenge, RON(-/-) mice harbor significantly increased systemic levels of IFN-gamma and IL-12p70 and increased levels of IL-12p40 transcript in their spleen. This elevation of IFN-gamma can be attributed to splenic NK cells responding to the elevated levels of IL-12. Analysis of RON and IFN-gamma receptor double-knockout mice indicates that the enhanced susceptibility of RON(-/-) mice to endotoxin challenge is dependent on IFN-gamma-mediated signals. In vitro studies demonstrate that stimulation of primary peritoneal macrophages with macrophage-stimulating protein, the ligand for RON, inhibits IFN-gamma-induced STAT1 phosphorylation and CIITA expression, resulting in reduced surface levels of MHC class II. Further studies demonstrating the induction of suppressor of cytokine signaling 1 via macrophage-stimulating protein/RON signaling provide a potential mechanistic insight into this regulatory pathway. These results indicate that the RON receptor regulates both the production of and response to IFN-gamma, resulting in enhanced susceptibility to endotoxin challenge.
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Affiliation(s)
- Caleph B Wilson
- Graduate Program in Pathobiology, Department of Veterinary and Biomedical Sciences, Pennsylvania State University, University Park, PA 16802, USA
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20
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Vanden Bush TJ, Bishop GA. TLR7 and CD40 cooperate in IL-6 production via enhanced JNK and AP-1 activation. Eur J Immunol 2008; 38:400-9. [PMID: 18228247 DOI: 10.1002/eji.200737602] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
During vaccination or infection, adaptive and innate immune receptors of B cells are engaged by microbial antigens/ligands. A better understanding of how innate and adaptive signaling pathways interact could enlighten B lymphocyte biology as well as aid immunotherapy strategies and vaccine design. To address this goal, we examined the effects of TLR stimulation on BCR and CD40-induced B cell activation. Synergistic production of IL-6 was observed in both human and mouse primary B cells stimulated through B cell antigen receptors, CD40 and TLR7, and these two receptors also cooperated independently of BCR signals. The enhanced IL-6 production was dependent upon the activity of c-Jun kinase (JNK) and cFos. Dual stimulation through CD40 and TLR7 markedly enhanced JNK activity. The increased level of active JNK in dual-stimulated cells was accompanied by an increase in the level of active AP-1 monomers cJun and cFos. The stimulation of B cells through both CD40 and TLR7 therefore enhanced the production of cytokines through increased JNK signaling and AP-1 activity. In addition, the dual stimulation increased cFos/AP-1 species in stimulated cells, effectively expanding the repertoire of AP-1 dimers as compared to singly stimulated B cells.
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Affiliation(s)
- Tony J Vanden Bush
- Department of Microbiology, The University of Iowa, Iowa City, IA 52242, USA
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21
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Sano GI, Takada Y, Goto S, Maruyama K, Shindo Y, Oka K, Matsui H, Matsuo K. Flagella facilitate escape of Salmonella from oncotic macrophages. J Bacteriol 2007; 189:8224-32. [PMID: 17873035 PMCID: PMC2168665 DOI: 10.1128/jb.00898-07] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The intracellular parasite Salmonella enterica serovar Typhimurium causes a typhoid-like systemic disease in mice. Whereas the survival of Salmonella in phagocytes is well understood, little has been documented about the exit of intracellular Salmonella from host cells. Here we report that in a population of infected macrophages Salmonella induces "oncosis," an irreversible progression to eukaryotic cell death characterized by swelling of the entire cell body. Oncotic macrophages (OnMphis) are terminal deoxynucleotidyltransferase-mediated dUTP-biotin nick end labeling negative and lack actin filaments (F-actin). The plasma membrane of OnMphis filled with bacilli remains impermeable, and intracellular Salmonella bacilli move vigorously using flagella. Eventually, intracellular Salmonella bacilli intermittently exit host cells in a flagellum-dependent manner. These results suggest that induction of macrophage oncosis and intracellular accumulation of flagellated bacilli constitute a strategy whereby Salmonella escapes from host macrophages.
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Affiliation(s)
- Gen-ichiro Sano
- Department of Microbiology and Immunology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
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