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Bataclan M, Leoni C, Moro SG, Pecoraro M, Wong EH, Heissmeyer V, Monticelli S. Crosstalk between Regnase-1 and -3 shapes mast cell survival and cytokine expression. Life Sci Alliance 2024; 7:e202402784. [PMID: 38830770 PMCID: PMC11147952 DOI: 10.26508/lsa.202402784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/17/2024] [Accepted: 05/22/2024] [Indexed: 06/05/2024] Open
Abstract
Post-transcriptional regulation of immune-related transcripts by RNA-binding proteins (RBPs) impacts immune cell responses, including mast cell functionality. Despite their importance in immune regulation, the functional role of most RBPs remains to be understood. By manipulating the expression of specific RBPs in murine mast cells, coupled with mass spectrometry and transcriptomic analyses, we found that the Regnase family of proteins acts as a potent regulator of mast cell physiology. Specifically, Regnase-1 is required to maintain basic cell proliferation and survival, whereas both Regnase-1 and -3 cooperatively regulate the expression of inflammatory transcripts upon activation, with Tnf being a primary target in both human and mouse cells. Furthermore, Regnase-3 directly interacts with Regnase-1 in mast cells and is necessary to restrain Regnase-1 expression through the destabilization of its transcript. Overall, our study identifies protein interactors of endogenously expressed Regnase factors, characterizes the regulatory interplay between Regnase family members in mast cells, and establishes their role in the control of mast cell homeostasis and inflammatory responses.
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Affiliation(s)
- Marian Bataclan
- https://ror.org/05gfswd81 Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Cristina Leoni
- https://ror.org/05gfswd81 Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Simone G Moro
- https://ror.org/05gfswd81 Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Matteo Pecoraro
- https://ror.org/05gfswd81 Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Elaine H Wong
- Institute for Immunology, Biomedical Center, Faculty of Medicine, Ludwig-Maximilians-Universität in Munich, Planegg-Martinsried, Germany
| | - Vigo Heissmeyer
- Institute for Immunology, Biomedical Center, Faculty of Medicine, Ludwig-Maximilians-Universität in Munich, Planegg-Martinsried, Germany
- Research Unit Molecular Immune Regulation, Helmholtz Zentrum München, Munich, Germany
| | - Silvia Monticelli
- https://ror.org/05gfswd81 Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
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2
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Ma G, Tao Q, Li X, Han Y, Du H, Hu Q, Xiao H. Metabolomics study of dietary Pleurotus eryngii β-type glycosidic polysaccharide on colitis induced by dextran sodium sulfate in mice - Exploration for the potential metabolic indicators in urine and serum. Food Chem 2024; 458:140195. [PMID: 38954951 DOI: 10.1016/j.foodchem.2024.140195] [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: 03/22/2024] [Revised: 06/19/2024] [Accepted: 06/21/2024] [Indexed: 07/04/2024]
Abstract
Pleurotus eryngii, an edible mushroom recognized for its potent polysaccharides, demonstrates significant regulatory effects on metabolic processes. β-glucan (WPEP) derived from P. eryngii has been noted for its therapeutic potential, exhibiting notable benefits in alleviating colonic inflammation and restructuring gut microbiota in mice treated with dextran sodium sulfate (DSS). This study focuses on utilizing DSS-induced colitis mice to explore the efficacy and underlying mechanisms of WPEP in ameliorating colitis, employing a metabolomics approach analyzing urine and serum. The findings reveal that WPEP administration effectively regulates metabolic imbalances in DSS mice, impacting purine metabolism, pentose and glucuronic acid interconversion, amino acid metabolism, primary bile acid biosynthesis, citric acid cycle, and lipid metabolism. Furthermore, WPEP demonstrates a capacity to modulate colitis by regulating diverse metabolic pathways, consequently influencing intestinal barrier integrity, motility, inflammation, oxidative stress, and immunity. These insights suggest that WPEP is a promising food component for managing inflammatory bowel diseases.
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Affiliation(s)
- Gaoxing Ma
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, People's Republic of China
| | - Qi Tao
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, People's Republic of China
| | - Xinyi Li
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, People's Republic of China
| | - Yanhui Han
- Department of Food Science, University of Massachusetts, Amherst, MA 01002, USA
| | - Hengjun Du
- Department of Food Science, University of Massachusetts, Amherst, MA 01002, USA
| | - Qiuhui Hu
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, People's Republic of China
| | - Hang Xiao
- Department of Food Science, University of Massachusetts, Amherst, MA 01002, USA.
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3
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Allegrini S, Camici M, Garcia-Gil M, Pesi R, Tozzi MG. Interplay between mTOR and Purine Metabolism Enzymes and Its Relevant Role in Cancer. Int J Mol Sci 2024; 25:6735. [PMID: 38928439 PMCID: PMC11203890 DOI: 10.3390/ijms25126735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 06/14/2024] [Accepted: 06/16/2024] [Indexed: 06/28/2024] Open
Abstract
Tumor cells reprogram their metabolism to meet the increased demand for nucleotides and other molecules necessary for growth and proliferation. In fact, cancer cells are characterized by an increased "de novo" synthesis of purine nucleotides. Therefore, it is not surprising that specific enzymes of purine metabolism are the targets of drugs as antineoplastic agents, and a better knowledge of the mechanisms underlying their regulation would be of great help in finding new therapeutic approaches. The mammalian target of the rapamycin (mTOR) signaling pathway, which is often activated in cancer cells, promotes anabolic processes and is a major regulator of cell growth and division. Among the numerous effects exerted by mTOR, noteworthy is its empowerment of the "de novo" synthesis of nucleotides, accomplished by supporting the formation of purinosomes, and by increasing the availability of necessary precursors, such as one-carbon formyl group, bicarbonate and 5-phosphoribosyl-1-pyrophosphate. In this review, we highlight the connection between purine and mitochondrial metabolism, and the bidirectional relation between mTOR signaling and purine synthesis pathways.
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Affiliation(s)
- Simone Allegrini
- Unità di Biochimica, Dipartimento di Biologia, Università di Pisa, Via San Zeno 51, 56127 Pisa, Italy; (M.C.); (R.P.); (M.G.T.)
- Centro di Ricerca Interdipartimentale Nutrafood “Nutraceuticals and Food for Health”, Università di Pisa, 56126 Pisa, Italy;
- CISUP, Centro per l’Integrazione Della Strumentazione Dell’Università di Pisa, 56127 Pisa, Italy
| | - Marcella Camici
- Unità di Biochimica, Dipartimento di Biologia, Università di Pisa, Via San Zeno 51, 56127 Pisa, Italy; (M.C.); (R.P.); (M.G.T.)
| | - Mercedes Garcia-Gil
- Centro di Ricerca Interdipartimentale Nutrafood “Nutraceuticals and Food for Health”, Università di Pisa, 56126 Pisa, Italy;
- CISUP, Centro per l’Integrazione Della Strumentazione Dell’Università di Pisa, 56127 Pisa, Italy
- Unità di Fisiologia Generale, Dipartimento di Biologia, Università di Pisa, Via San Zeno 31, 56127 Pisa, Italy
| | - Rossana Pesi
- Unità di Biochimica, Dipartimento di Biologia, Università di Pisa, Via San Zeno 51, 56127 Pisa, Italy; (M.C.); (R.P.); (M.G.T.)
| | - Maria Grazia Tozzi
- Unità di Biochimica, Dipartimento di Biologia, Università di Pisa, Via San Zeno 51, 56127 Pisa, Italy; (M.C.); (R.P.); (M.G.T.)
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4
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Sun X, Nagahama Y, Singh SK, Kozakai Y, Nabeshima H, Fukushima K, Tanaka H, Motooka D, Fukui E, Vivier E, Diez D, Akira S. Deletion of the mRNA endonuclease Regnase-1 promotes NK cell anti-tumor activity via OCT2-dependent transcription of Ifng. Immunity 2024; 57:1360-1377.e13. [PMID: 38821052 DOI: 10.1016/j.immuni.2024.05.006] [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: 07/13/2023] [Revised: 12/31/2023] [Accepted: 05/07/2024] [Indexed: 06/02/2024]
Abstract
Limited infiltration and activity of natural killer (NK) and T cells within the tumor microenvironment (TME) correlate with poor immunotherapy responses. Here, we examined the role of the endonuclease Regnase-1 on NK cell anti-tumor activity. NK cell-specific deletion of Regnase-1 (Reg1ΔNK) augmented cytolytic activity and interferon-gamma (IFN-γ) production in vitro and increased intra-tumoral accumulation of Reg1ΔNK-NK cells in vivo, reducing tumor growth dependent on IFN-γ. Transcriptional changes in Reg1ΔNK-NK cells included elevated IFN-γ expression, cytolytic effectors, and the chemokine receptor CXCR6. IFN-γ induced expression of the CXCR6 ligand CXCL16 on myeloid cells, promoting further recruitment of Reg1ΔNK-NK cells. Mechanistically, Regnase-1 deletion increased its targets, the transcriptional regulators OCT2 and IκBζ, following interleukin (IL)-12 and IL-18 stimulation, and the resulting OCT2-IκBζ-NF-κB complex induced Ifng transcription. Silencing Regnase-1 in human NK cells increased the expression of IFNG and POU2F2. Our findings highlight NK cell dysfunction in the TME and propose that targeting Regnase-1 could augment active NK cell persistence for cancer immunotherapy.
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Affiliation(s)
- Xin Sun
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (WPI-IFReC), Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Quantitative Immunology Unit, WPI-IFReC, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Joint Research Chair of Innate Immunity for Drug Discovery, WPI-IFReC, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yasuharu Nagahama
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (WPI-IFReC), Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Host Defense Laboratory, Immunology Unit, Department of Medical Innovations, Osaka Research Center for Drug Discovery, Otsuka Pharmaceutical Co. Ltd., 5-1-35 Saito-aokita, Minoh, Osaka 562-0029, Japan; Joint Research Chair of Innate Immunity for Drug Discovery, WPI-IFReC, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Shailendra Kumar Singh
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (WPI-IFReC), Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Joint Research Chair of Innate Immunity for Drug Discovery, WPI-IFReC, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yuuki Kozakai
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (WPI-IFReC), Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hiroshi Nabeshima
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (WPI-IFReC), Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Host Defense Laboratory, Immunology Unit, Department of Medical Innovations, Osaka Research Center for Drug Discovery, Otsuka Pharmaceutical Co. Ltd., 5-1-35 Saito-aokita, Minoh, Osaka 562-0029, Japan; Joint Research Chair of Innate Immunity for Drug Discovery, WPI-IFReC, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Kiyoharu Fukushima
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (WPI-IFReC), Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Joint Research Chair of Innate Immunity for Drug Discovery, WPI-IFReC, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Department of Respiratory Medicine and Clinical Immunology, Graduate School of Medicine, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hiroki Tanaka
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (WPI-IFReC), Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Daisuke Motooka
- NGS Core Facility of the Genome Information Research Center, RIMD, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Eriko Fukui
- Department of General Thoracic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Eric Vivier
- Aix-Marseille Université, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre d'Immunologie de Marseille-Luminy, Marseille, France; Innate Pharma Research Laboratories, Marseille, France; APHM, Hôpital de la Timone, Marseille-Immunopole, Marseille, France
| | - Diego Diez
- Quantitative Immunology Unit, WPI-IFReC, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Shizuo Akira
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (WPI-IFReC), Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Joint Research Chair of Innate Immunity for Drug Discovery, WPI-IFReC, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Department of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan; Center for Advanced Modalities and Drug Delivery System (CAMaD), Osaka University, 2-8 Yamada-oka, Suita, Osaka 565-0871, Japan.
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5
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Wang J, Shi L, Zhang X, Hu R, Yue Z, Zou H, Peng Q, Jiang Y, Wang Z. Metabolomics and proteomics insights into subacute ruminal acidosis etiology and inhibition of proliferation of yak rumen epithelial cells in vitro. BMC Genomics 2024; 25:394. [PMID: 38649832 PMCID: PMC11036571 DOI: 10.1186/s12864-024-10242-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 03/19/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND Untargeted metabolomics and proteomics were employed to investigate the intracellular response of yak rumen epithelial cells (YRECs) to conditions mimicking subacute rumen acidosis (SARA) etiology, including exposure to short-chain fatty acids (SCFA), low pH5.5 (Acid), and lipopolysaccharide (LPS) exposure for 24 h. RESULTS These treatments significantly altered the cellular morphology of YRECs. Metabolomic analysis identified significant perturbations with SCFA, Acid and LPS treatment affecting 259, 245 and 196 metabolites (VIP > 1, P < 0.05, and fold change (FC) ≥ 1.5 or FC ≤ 0.667). Proteomic analysis revealed that treatment with SCFA, Acid, and LPS resulted in differential expression of 1251, 1396, and 242 proteins, respectively (FC ≥ 1.2 or ≤ 0.83, P < 0.05, FDR < 1%). Treatment with SCFA induced elevated levels of metabolites involved in purine metabolism, glutathione metabolism, and arginine biosynthesis, and dysregulated proteins associated with actin cytoskeleton organization and ribosome pathways. Furthermore, SCFA reduced the number, morphology, and functionality of mitochondria, leading to oxidative damage and inhibition of cell survival. Gene expression analysis revealed a decrease the genes expression of the cytoskeleton and cell cycle, while the genes expression associated with inflammation and autophagy increased (P < 0.05). Acid exposure altered metabolites related to purine metabolism, and affected proteins associated with complement and coagulation cascades and RNA degradation. Acid also leads to mitochondrial dysfunction, alterations in mitochondrial integrity, and reduced ATP generation. It also causes actin filaments to change from filamentous to punctate, affecting cellular cytoskeletal function, and increases inflammation-related molecules, indicating the promotion of inflammatory responses and cellular damage (P < 0.05). LPS treatment induced differential expression of proteins involved in the TNF signaling pathway and cytokine-cytokine receptor interaction, accompanied by alterations in metabolites associated with arachidonic acid metabolism and MAPK signaling (P < 0.05). The inflammatory response and activation of signaling pathways induced by LPS treatment were also confirmed through protein interaction network analysis. The integrated analysis reveals co-enrichment of proteins and metabolites in cellular signaling and metabolic pathways. CONCLUSIONS In summary, this study contributes to a comprehensive understanding of the detrimental effects of SARA-associated factors on YRECs, elucidating their molecular mechanisms and providing potential therapeutic targets for mitigating SARA.
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Affiliation(s)
- JunMei Wang
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Liyuan Shi
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiaohong Zhang
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Rui Hu
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ziqi Yue
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Huawei Zou
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Quanhui Peng
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yahui Jiang
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Zhisheng Wang
- Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China.
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Zhang Y, Zhang Y, Song J, Cheng X, Zhou C, Huang S, Zhao W, Zong Z, Yang L. Targeting the "tumor microenvironment": RNA-binding proteins in the spotlight in colorectal cancer therapy. Int Immunopharmacol 2024; 131:111876. [PMID: 38493688 DOI: 10.1016/j.intimp.2024.111876] [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: 01/31/2024] [Revised: 03/04/2024] [Accepted: 03/13/2024] [Indexed: 03/19/2024]
Abstract
Colorectal cancer (CRC) is the third most common cancer and has the second highest mortality rate among cancers. The development of CRC involves both genetic and epigenetic abnormalities, and recent research has focused on exploring the ex-transcriptome, particularly post-transcriptional modifications. RNA-binding proteins (RBPs) are emerging epigenetic regulators that play crucial roles in post-transcriptional events. Dysregulation of RBPs can result in aberrant expression of downstream target genes, thereby affecting the progression of colorectal tumors and the prognosis of patients. Recent studies have shown that RBPs can influence CRC pathogenesis and progression by regulating various components of the tumor microenvironment (TME). Although previous research on RBPs has primarily focused on their direct regulation of colorectal tumor development, their involvement in the remodeling of the TME has not been systematically reported. This review aims to highlight the significant role of RBPs in the intricate interactions within the CRC tumor microenvironment, including tumor immune microenvironment, inflammatory microenvironment, extracellular matrix, tumor vasculature, and CRC cancer stem cells. We also highlight several compounds under investigation for RBP-TME-based treatment of CRC, including small molecule inhibitors such as antisense oligonucleotides (ASOs), siRNAs, agonists, gene manipulation, and tumor vaccines. The insights gained from this review may lead to the development of RBP-based targeted novel therapeutic strategies aimed at modulating the TME, potentially inhibiting the progression and metastasis of CRC.
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Affiliation(s)
- Yiwei Zhang
- Department of Gastrointestinal Surgery, the Second Affiliated Hospital of Nanchang University, No. 1 MinDe Road, 330006 Nanchang, China; Department of Gastroenterology, The Second Affiliated Hospital of Nanchang University, No. 1 Mingde Rd., Nanchang 330006, Jiangxi, China; Queen Mary School, Nanchang University, 330006 Nanchang, China
| | - Yujun Zhang
- Department of Gastrointestinal Surgery, the Second Affiliated Hospital of Nanchang University, No. 1 MinDe Road, 330006 Nanchang, China; Department of Gastroenterology, The Second Affiliated Hospital of Nanchang University, No. 1 Mingde Rd., Nanchang 330006, Jiangxi, China
| | - Jingjing Song
- Department of Gastrointestinal Surgery, the Second Affiliated Hospital of Nanchang University, No. 1 MinDe Road, 330006 Nanchang, China; Department of Gastroenterology, The Second Affiliated Hospital of Nanchang University, No. 1 Mingde Rd., Nanchang 330006, Jiangxi, China; School of Ophthalmology and Optometry of Nanchang University, China
| | - Xifu Cheng
- School of Ophthalmology and Optometry of Nanchang University, China
| | - Chulin Zhou
- The Second Clinical Medical College, Nanchang University, Nanchang 330006, China
| | - Shuo Huang
- The Second Clinical Medical College, Nanchang University, Nanchang 330006, China
| | - Wentao Zhao
- The 3rd Clinical Department of China Medical University, 10159 Shenyang, China
| | - Zhen Zong
- Department of Gastrointestinal Surgery, the Second Affiliated Hospital of Nanchang University, No. 1 MinDe Road, 330006 Nanchang, China.
| | - Lingling Yang
- Department of Gastroenterology, The Second Affiliated Hospital of Nanchang University, No. 1 Mingde Rd., Nanchang 330006, Jiangxi, China.
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Yoshinaga M, Takeuchi O. Regulation of inflammatory diseases via the control of mRNA decay. Inflamm Regen 2024; 44:14. [PMID: 38491500 PMCID: PMC10941436 DOI: 10.1186/s41232-024-00326-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 03/02/2024] [Indexed: 03/18/2024] Open
Abstract
Inflammation orchestrates a finely balanced process crucial for microorganism elimination and tissue injury protection. A multitude of immune and non-immune cells, alongside various proinflammatory cytokines and chemokines, collectively regulate this response. Central to this regulation is post-transcriptional control, governing gene expression at the mRNA level. RNA-binding proteins such as tristetraprolin, Roquin, and the Regnase family, along with RNA modifications, intricately dictate the mRNA decay of pivotal mediators and regulators in the inflammatory response. Dysregulated activity of these factors has been implicated in numerous human inflammatory diseases, underscoring the significance of post-transcriptional regulation. The increasing focus on targeting these mechanisms presents a promising therapeutic strategy for inflammatory and autoimmune diseases. This review offers an extensive overview of post-transcriptional regulation mechanisms during inflammatory responses, delving into recent advancements, their implications in human diseases, and the strides made in therapeutic exploitation.
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Affiliation(s)
- Masanori Yoshinaga
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501, Japan.
| | - Osamu Takeuchi
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501, Japan.
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8
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McPhedran SJ, Carleton GA, Lum JJ. Metabolic engineering for optimized CAR-T cell therapy. Nat Metab 2024; 6:396-408. [PMID: 38388705 DOI: 10.1038/s42255-024-00976-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 01/04/2024] [Indexed: 02/24/2024]
Abstract
The broad effectiveness of T cell-based therapy for treating solid tumour cancers remains limited. This is partly due to the growing appreciation that immune cells must inhabit and traverse a metabolically demanding tumour environment. Accordingly, recent efforts have centred on using genome-editing technologies to augment T cell-mediated cytotoxicity by manipulating specific metabolic genes. However, solid tumours exhibit numerous characteristics restricting immune cell-mediated cytotoxicity, implying a need for metabolic engineering at the pathway level rather than single gene targets. This emerging concept has yet to be put into clinical practice as many questions concerning the complex interplay between metabolic networks and T cell function remain unsolved. This Perspective will highlight key foundational studies that examine the relevant metabolic pathways required for effective T cell cytotoxicity and persistence in the human tumour microenvironment, feasible strategies for metabolic engineering to increase the efficiency of chimeric antigen receptor T cell-based approaches, and the challenges lying ahead for clinical implementation.
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Affiliation(s)
- Sarah J McPhedran
- Trev and Joyce Deeley Research Centre, BC Cancer, Victoria, British Columbia, Canada
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada
| | - Gillian A Carleton
- Trev and Joyce Deeley Research Centre, BC Cancer, Victoria, British Columbia, Canada
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada
| | - Julian J Lum
- Trev and Joyce Deeley Research Centre, BC Cancer, Victoria, British Columbia, Canada.
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia, Canada.
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9
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Schwärzler J, Mayr L, Grabherr F, Tilg H, Adolph TE. Epithelial metabolism as a rheostat for intestinal inflammation and malignancy. Trends Cell Biol 2024:S0962-8924(24)00004-7. [PMID: 38341347 DOI: 10.1016/j.tcb.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/06/2024] [Accepted: 01/12/2024] [Indexed: 02/12/2024]
Abstract
The gut epithelium protects the host from a potentially hostile environment while allowing nutrient uptake that is vital for the organism. To maintain this delicate task, the gut epithelium has evolved multilayered cellular functions ranging from mucus production to hormone release and orchestration of mucosal immunity. Here, we review the execution of intestinal epithelial metabolism in health and illustrate how perturbation of epithelial metabolism affects experimental gut inflammation and tumorigenesis. We also discuss the impact of environmental factors and host-microbe interactions on epithelial metabolism in the context of inflammatory bowel disease and colorectal cancer. Insights into epithelial metabolism hold promise to unravel mechanisms of organismal health that may be therapeutically exploited in humans in the future.
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Affiliation(s)
- Julian Schwärzler
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, and Metabolism, Medical University of Innsbruck, Innsbruck, Austria.
| | - Lisa Mayr
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, and Metabolism, Medical University of Innsbruck, Innsbruck, Austria
| | - Felix Grabherr
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, and Metabolism, Medical University of Innsbruck, Innsbruck, Austria
| | - Herbert Tilg
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, and Metabolism, Medical University of Innsbruck, Innsbruck, Austria
| | - Timon E Adolph
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, and Metabolism, Medical University of Innsbruck, Innsbruck, Austria.
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10
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Yoshinaga M, Takeuchi O. RNA Metabolism Governs Immune Function and Response. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1444:145-161. [PMID: 38467978 DOI: 10.1007/978-981-99-9781-7_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Inflammation is a complex process that protects our body from various insults such as infection, injury, and stress. Proper inflammation is beneficial to eliminate the insults and maintain organ homeostasis, however, it can become detrimental if uncontrolled. To tightly regulate inflammation, post-transcriptional mechanisms governing RNA metabolism play a crucial role in monitoring the expression of immune-related genes, such as tumor necrosis factor (TNF) and interleukin-6 (IL-6). These mechanisms involve the coordinated action of various RNA-binding proteins (RBPs), including the Regnase family, Roquin, and RNA methyltransferases, which are responsible for mRNA decay and/or translation regulation. The collaborative efforts of these RBPs are essential in preventing aberrant immune response activation and consequently safeguarding against inflammatory and autoimmune diseases. This review provides an overview of recent advancements in our understanding of post-transcriptional regulation within the immune system and explores the specific roles of individual RBPs in RNA metabolism and regulation.
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Affiliation(s)
- Masanori Yoshinaga
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Osamu Takeuchi
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
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Tsai YT, Chang CH, Tsai HY. Rege-1 promotes C. elegans survival by modulating IIS and TOR pathways. PLoS Genet 2023; 19:e1010869. [PMID: 37556491 PMCID: PMC10441803 DOI: 10.1371/journal.pgen.1010869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 08/21/2023] [Accepted: 07/12/2023] [Indexed: 08/11/2023] Open
Abstract
Metabolic pathways are known to sense the environmental stimuli and result in physiological adjustments. The responding processes need to be tightly controlled. Here, we show that upon encountering P. aeruginosa, C. elegans upregulate the transcription factor ets-4, but this upregulation is attenuated by the ribonuclease, rege-1. As such, mutants with defective REGE-1 ribonuclease activity undergo ets-4-dependent early death upon challenge with P. aeruginosa. Furthermore, mRNA-seq analysis revealed associated global changes in two key metabolic pathways, the IIS (insulin/IGF signaling) and TOR (target of rapamycin) kinase signaling pathways. In particular, failure to degrade ets-4 mRNA in activity-defective rege-1 mutants resulted in upregulation of class II longevity genes, which are suppressed during longevity, and activation of TORC1 kinase signaling pathway. Genetic inhibition of either pathway way was sufficient to abolish the poor survival phenotype in rege-1 worms. Further analysis of ETS-4 ChIP data from ENCODE and characterization of one upregulated class II gene, ins-7, support that the Class II genes are activated by ETS-4. Interestingly, deleting an upregulated Class II gene, acox-1.5, a peroxisome β-oxidation enzyme, largely rescues the fat lost phenotype and survival difference between rege-1 mutants and wild-types. Thus, rege-1 appears to be crucial for animal survival due to its tight regulation of physiological responses to environmental stimuli. This function is reminiscent of its mammalian ortholog, Regnase-1, which modulates the intestinal mTORC1 signaling pathway.
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Affiliation(s)
- Yi-Ting Tsai
- Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chen-Hsi Chang
- School of Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hsin-Yue Tsai
- Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
- Center of Precision Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
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12
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MCPIP1 alleviates inflammatory response through inducing autophagy in Aspergillus fumigatus keratitis. Int Immunopharmacol 2022; 113:109279. [DOI: 10.1016/j.intimp.2022.109279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 09/21/2022] [Accepted: 09/21/2022] [Indexed: 11/05/2022]
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13
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Lu H, Zhang C, Wu W, Chen H, Lin R, Sun R, Gao X, Li G, He Q, Gao H, Wu X, Lin J, Zhu R, Niu J, Kolattukudy PE, Liu Z. MCPIP1 restrains mucosal inflammation by orchestrating the intestinal monocyte to macrophage maturation via an ATF3-AP1S2 axis. Gut 2022; 72:882-895. [PMID: 37015751 DOI: 10.1136/gutjnl-2022-327183] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 08/31/2022] [Indexed: 04/06/2023]
Abstract
ObjectiveMonocyte chemotactic protein-1-induced protein 1 (MCPIP1) is highly expressed in inflamed mucosa of inflammatory bowel disease (IBD) and negatively regulates immune response, while the underlying mechanisms regulating mucosal macrophage functions remain unknown. Here, we investigated the roles of MCPIP1 in modulating the differentiation and functions of intestinal macrophages in the pathogenesis of IBD.DesignScRNA-seq was used to cluster the monocyte/macrophage lineage from macrophage-specific Mcpip1-deficient (Mcpip1∆Mye) mice and Mcpip1fl/fl littermates. The differentially expressed genes were confirmed by RNA-seq, luciferase assay, CUT&Tag assay and Western blotting. Effects of MCPIP1 and the activating transcription factor 3 (ATF3)-AP1S2 axis were assessed in patients with IBD.ResultsMcpip1∆Mye mice developed more severe dextran sulfate sodium (DSS)-induced colitis characterised by an increase in macrophage migratory capacity and M1 macrophage polarisation but a decrease in the monocyte-to-macrophage maturation in gut mucosa compared with their littermates. ScRNA-seq unravelled a proinflammatory population (Ccr2+Il-1β+Tlr2+Cx3cr1−Cd163−Mrc1−Ly6c+) of the monocyte/macrophage lineage from lamina propria CD11b+ cells and an arrest of Mcpip1∆Mye monocyte-to-macrophage maturation in an Atf3-Ap1s2 axis-dependent manner. Silencing of Ap1s2 or Atf3 markedly suppressed Mcpip1∆Mye macrophage migration, M1-like polarisation, and production of proinflammatory cytokines and chemokines. Notably, in vivo blockage of Ap1s2 ameliorated DSS-induced colitis in Mcpip1ΔMye mice through enhancing intestinal macrophage maturation. Furthermore, MCPIP1, ATF3 and AP1S2 were highly expressed in inflamed mucosa of active patients with IBD and blockage of ATF3 or AP1S2 significantly suppressed IBD CD14+-derived M1-like macrophage polarisation and proinflammatory cytokine production.ConclusionsMacrophage-specific Mcpip1 deficiency polarises macrophages towards M1-like phenotype, arrests macrophage maturation and exacerbates intestinal inflammation in an Atf3-Ap1s2-dependent manner, thus providing novel mechanistic insight into intestinal macrophage functions during IBD.
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Affiliation(s)
- Huiying Lu
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Cui Zhang
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Wei Wu
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Huimin Chen
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ritian Lin
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ruicong Sun
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiang Gao
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Gengfeng Li
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qiong He
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Han Gao
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaohan Wu
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jian Lin
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ruixin Zhu
- Department of Bioinformatics, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Jianli Niu
- Office of Human Research, Memorial Healthcare System, Hollywood, Florida, USA
- Burnett School of Biomedical Science, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Pappachan E Kolattukudy
- Burnett School of Biomedical Science, College of Medicine, University of Central Florida, Orlando, Florida, USA
| | - Zhanju Liu
- Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
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Gut Epithelial Inositol Polyphosphate Multikinase Alleviates Experimental Colitis via Governing Tuft Cell Homeostasis. Cell Mol Gastroenterol Hepatol 2022; 14:1235-1256. [PMID: 35988719 PMCID: PMC9579329 DOI: 10.1016/j.jcmgh.2022.08.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 08/11/2022] [Accepted: 08/11/2022] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS Inositol polyphosphate multikinase (IPMK), an essential enzyme for inositol phosphate metabolism, has been known to mediate major biological events such as growth. Recent studies have identified single-nucleotide polymorphisms in the IPMK gene associated with inflammatory bowel disease predisposition. Therefore, we aimed to investigate the functional significance of IPMK in gut epithelium. METHODS We generated intestinal epithelial cell (IEC)-specific Ipmk knockout (IPMKΔIEC) mice, and assessed their vulnerability against dextran sulfate sodium-induced experimental colitis. Both bulk and single-cell RNA sequencing were performed to analyze IPMK-deficient colonic epithelial cells and colonic tuft cells. RESULTS Although IPMKΔIEC mice developed normally and showed no intestinal abnormalities during homeostasis, Ipmk deletion aggravated dextran sulfate sodium-induced colitis, with higher clinical colitis scores, and increased epithelial barrier permeability. Surprisingly, Ipmk deletion led to a significant decrease in the number of tuft cells without influencing other IECs. Single-cell RNA sequencing of mouse colonic tuft cells showed 3 distinct populations of tuft cells, and further showed that a transcriptionally inactive population was expanded markedly in IPMKΔIEC mice, while neuronal-related cells were relatively decreased. CONCLUSIONS Cholinergic output from tuft cells is known to be critical for the restoration of intestinal architecture upon damage, supporting that tuft cell-defective IPMKΔIEC mice are more prone to colitis. Thus, intestinal epithelial IPMK is a critical regulator of colonic integrity and tissue regeneration by determining tuft cell homeostasis and affecting cholinergic output.
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In vivo CRISPR screening identifies BAZ2 chromatin remodelers as druggable regulators of mammalian liver regeneration. Cell Stem Cell 2022; 29:372-385.e8. [PMID: 35090595 PMCID: PMC8897233 DOI: 10.1016/j.stem.2022.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 09/17/2021] [Accepted: 12/30/2021] [Indexed: 12/17/2022]
Abstract
Identifying new pathways that regulate mammalian regeneration is challenging due to the paucity of in vivo screening approaches. We employed pooled CRISPR knockout and activation screening in the regenerating liver to evaluate 165 chromatin regulatory proteins. Both screens identified the imitation-SWI chromatin remodeling components Baz2a and Baz2b, not previously implicated in regeneration. In vivo sgRNA, siRNA, and knockout strategies against either paralog confirmed increased regeneration. Distinct BAZ2-specific bromodomain inhibitors, GSK2801 and BAZ2-ICR, resulted in accelerated liver healing after diverse injuries. Inhibitor-treated mice also exhibited improved healing in an inflammatory bowel disease model, suggesting multi-tissue applicability. Transcriptomics on regenerating livers showed increases in ribosomal and cell cycle mRNAs. Surprisingly, CRISPRa screening to define mechanisms showed that overproducing Rpl10a or Rpl24 was sufficient to drive regeneration, whereas Rpl24 haploinsufficiency was rate limiting for BAZ2 inhibition-mediated regeneration. The discovery of regenerative roles for imitation-SWI components provides immediate strategies to enhance tissue repair.
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16
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Behrens G, Edelmann SL, Raj T, Kronbeck N, Monecke T, Davydova E, Wong EH, Kifinger L, Giesert F, Kirmaier ME, Hohn C, de Jonge LS, Pisfil MG, Fu M, Theurich S, Feske S, Kawakami N, Wurst W, Niessing D, Heissmeyer V. Disrupting Roquin-1 interaction with Regnase-1 induces autoimmunity and enhances antitumor responses. Nat Immunol 2021; 22:1563-1576. [PMID: 34811541 PMCID: PMC8996344 DOI: 10.1038/s41590-021-01064-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/30/2021] [Indexed: 12/15/2022]
Abstract
Roquin and Regnase-1 proteins bind and post-transcriptionally regulate proinflammatory target messenger RNAs to maintain immune homeostasis. Either the sanroque mutation in Roquin-1 or loss of Regnase-1 cause systemic lupus erythematosus-like phenotypes. Analyzing mice with T cells that lack expression of Roquin-1, its paralog Roquin-2 and Regnase-1 proteins, we detect overlapping or unique phenotypes by comparing individual and combined inactivation. These comprised spontaneous activation, metabolic reprogramming and persistence of T cells leading to autoimmunity. Here, we define an interaction surface in Roquin-1 for binding to Regnase-1 that included the sanroque residue. Mutations in Roquin-1 impairing this interaction and cooperative regulation of targets induced T follicular helper cells, germinal center B cells and autoantibody formation. These mutations also improved the functionality of tumor-specific T cells by promoting their accumulation in the tumor and reducing expression of exhaustion markers. Our data reveal the physical interaction of Roquin-1 with Regnase-1 as a hub to control self-reactivity and effector functions in immune cell therapies.
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Affiliation(s)
- Gesine Behrens
- Institute for Immunology, Biomedical Center (BMC), Faculty of Medicine, Ludwig-Maximilians-Universität in Munich, Planegg-Martinsried, Germany
| | - Stephanie L Edelmann
- Research Unit Molecular Immune Regulation, Helmholtz Zentrum München, Munich, Germany
| | - Timsse Raj
- Institute for Immunology, Biomedical Center (BMC), Faculty of Medicine, Ludwig-Maximilians-Universität in Munich, Planegg-Martinsried, Germany
| | - Nina Kronbeck
- Institute for Immunology, Biomedical Center (BMC), Faculty of Medicine, Ludwig-Maximilians-Universität in Munich, Planegg-Martinsried, Germany
| | - Thomas Monecke
- Institute of Pharmaceutical Biotechnology, Ulm University, Ulm, Germany
| | - Elena Davydova
- Institute of Structural Biology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Elaine H Wong
- Institute for Immunology, Biomedical Center (BMC), Faculty of Medicine, Ludwig-Maximilians-Universität in Munich, Planegg-Martinsried, Germany
| | - Lisa Kifinger
- Research Unit Molecular Immune Regulation, Helmholtz Zentrum München, Munich, Germany
| | - Florian Giesert
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Martin E Kirmaier
- Cancer and Immunometabolism Research Group at the Gene Center, Ludwig-Maximilians-Universität in Munich, Munich, Germany
- Department of Medicine III, LMU University Hospital, Ludwig-Maximilians-Universität in Munich, Munich, Germany
| | - Christine Hohn
- Institute for Immunology, Biomedical Center (BMC), Faculty of Medicine, Ludwig-Maximilians-Universität in Munich, Planegg-Martinsried, Germany
| | - Laura S de Jonge
- Research Unit Molecular Immune Regulation, Helmholtz Zentrum München, Munich, Germany
| | - Mariano Gonzalez Pisfil
- Core Facility Bioimaging and Walter-Brendel-Centre of Experimental Medicine at the Biomedical Center, Ludwig-Maximilians-Universität in Munich, Planegg-Martinsried, Germany
| | - Mingui Fu
- Department of Basic Medical Science, School of Medicine, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Sebastian Theurich
- Cancer and Immunometabolism Research Group at the Gene Center, Ludwig-Maximilians-Universität in Munich, Munich, Germany
- Department of Medicine III, LMU University Hospital, Ludwig-Maximilians-Universität in Munich, Munich, Germany
| | - Stefan Feske
- Department of Pathology, New York University School of Medicine, New York, NY, USA
| | - Naoto Kawakami
- Institute of Clinical Neuroimmunology, University Hospital and Biomedical Center, Ludwig-Maximilians-Universität in Munich, Planegg-Martinsried, Germany
| | - Wolfgang Wurst
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
- German Center for Neurodegenerative Diseases (DZNE) Site Munich, Munich, Germany
- Technische Universität München, Lehrstuhl für Entwicklungsgenetik c/o Helmholtz Zentrum München, Munich, Germany
| | - Dierk Niessing
- Institute of Pharmaceutical Biotechnology, Ulm University, Ulm, Germany
- Institute of Structural Biology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Vigo Heissmeyer
- Institute for Immunology, Biomedical Center (BMC), Faculty of Medicine, Ludwig-Maximilians-Universität in Munich, Planegg-Martinsried, Germany.
- Research Unit Molecular Immune Regulation, Helmholtz Zentrum München, Munich, Germany.
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Mino T, Takeuchi O. Regnase-1-related endoribonucleases in health and immunological diseases. Immunol Rev 2021; 304:97-110. [PMID: 34514623 DOI: 10.1111/imr.13023] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/29/2021] [Accepted: 08/05/2021] [Indexed: 12/12/2022]
Abstract
Dynamic changes in gene expression are key factors in the development and activation of immune cells. RNA metabolism is one of the critical steps for the control of gene expression. Together with transcriptional regulation, mRNA decay by specific ribonucleases (RNases) plays a vital role in shaping gene expression. In addition to the canonical exoribonuclease-mediated mRNA degradation through the recognition of cis-elements in mRNA 3' untranslated regions by RNA-binding proteins (RBPs), endoribonucleases are involved in the control of mRNAs in immune cells. In this review, we gleam insights on how Regnase-1, an endoribonuclease necessary for regulating immune cell activation and maintenance of immune homeostasis, degrades RNAs involved in immune cell activation. Additionally, we provide insights on recent studies which uncover the role of Regnase-1-related RNases, including Regnase-2, Regnase-3, and Regnase-4, as well as N4BP1 and KHNYN, in immune regulation and antiviral immunity. As the dysregulation of immune mRNA decay leads to pathologies such as autoimmune diseases or impaired activation of immune responses, RNases are deemed as essential components of regulatory feedback mechanisms that modulate inflammation. Given the critical role of RNases in autoimmunity, RNases can be perceived as emerging targets in the development of novel therapeutics.
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Affiliation(s)
- Takashi Mino
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Osamu Takeuchi
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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18
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Akiyama T, Suzuki T, Yamamoto T. RNA decay machinery safeguards immune cell development and immunological responses. Trends Immunol 2021; 42:447-460. [PMID: 33858774 DOI: 10.1016/j.it.2021.03.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 12/30/2022]
Abstract
mRNA decay systems control mRNA abundance by counterbalancing transcription. Several recent studies show that mRNA decay pathways are crucial to conventional T and B cell development in vertebrates, in addition to suppressing autoimmunity and excessive inflammatory responses. Selective mRNA degradation triggered by the CCR4-NOT deadenylase complex appears to be required in lymphocyte development, cell quiescence, V(D)J (variable-diversity-joining) recombination, and prevention of inappropriate apoptosis in mice. Moreover, a recent study suggests that mRNA decay may be involved in preventing human hyperinflammatory disease. These findings imply that mRNA decay pathways in humans and mice do not simply maintain mRNA homeostatic turnover but can also precisely regulate immune development and immunological responses by selectively targeting mRNAs.
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Affiliation(s)
- Taishin Akiyama
- Laboratory for Immune Homeostasis, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan; Graduate School of Medical Life Science, Yokohama City University, Yokohama 230-0045, Japan.
| | - Toru Suzuki
- Laboratory for Immunogenetics, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan
| | - Tadashi Yamamoto
- Laboratory for Immunogenetics, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan; Cell Signal Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 904-0495, Japan
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Dobosz E, Wadowska M, Kaminska M, Wilamowski M, Honarpisheh M, Bryzek D, Potempa J, Jura J, Lech M, Koziel J. MCPIP-1 Restricts Inflammation via Promoting Apoptosis of Neutrophils. Front Immunol 2021; 12:627922. [PMID: 33717148 PMCID: PMC7952515 DOI: 10.3389/fimmu.2021.627922] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 02/08/2021] [Indexed: 11/13/2022] Open
Abstract
Monocyte chemoattractant protein-induced protein-1 (MCPIP-1) is a potent inhibitor of inflammatory response to pathogens. Acting as endonuclease against transcripts of inflammatory cytokines or transcription factors MCPIP-1 can significantly reduce the cytokine storm, thus limiting the tissue damage. As the adequate resolution of inflammation depends also on the efficient clearance of accumulated neutrophils, we focused on the role of MCPIP-1 in apoptosis and retention of neutrophils. We used peritoneal neutrophils from cell-specific MCPIP-1 knockout mice and showed prolonged survival of these cells. Moreover, we confirmed that MCPIP-1-dependent degradation of transcripts of antiapoptotic genes, including BCL3, BCL2A1, BCL2L1, and for the first time MCL-1, serves as an early event in spontaneous apoptosis of primary neutrophils. Additionally, we identified previously unknown miRNAs as potential binding partners to the MCPIP-1 transcript and their regulation suggest a role in MCPIP-1 half-life and translation. These phenomena may play a role as a molecular switch that balances the MCPIP-1-dependent apoptosis. Besides that, we determined these particular miRNAs as integral components of the GM-CSF-MCPIP-1 axis. Taken together, we identified the novel anti-inflammatory role of MCPIP-1 as a regulator of accumulation and survival of neutrophils that simultaneously promotes an adequate resolution of inflammation.
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Affiliation(s)
- Ewelina Dobosz
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology of Jagiellonian University, Krakow, Poland
| | - Marta Wadowska
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology of Jagiellonian University, Krakow, Poland
| | - Marta Kaminska
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology of Jagiellonian University, Krakow, Poland
| | - Mateusz Wilamowski
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology of Jagiellonian University, Krakow, Poland
| | - Mohsen Honarpisheh
- Ludwig-Maximilians University Hospital, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians University, Munich, Germany
| | - Danuta Bryzek
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology of Jagiellonian University, Krakow, Poland
| | - Jan Potempa
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology of Jagiellonian University, Krakow, Poland.,Department of Oral Immunity and Infectious Diseases, University of Louisville School of Dentistry, University of Louisville, Louisville, KY, United States
| | - Jolanta Jura
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology of Jagiellonian University, Krakow, Poland
| | - Maciej Lech
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology of Jagiellonian University, Krakow, Poland.,Ludwig-Maximilians University Hospital, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians University, Munich, Germany
| | - Joanna Koziel
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology of Jagiellonian University, Krakow, Poland
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Abstract
Posttranscriptional control of mRNA regulates various biological processes, including inflammatory and immune responses. RNA-binding proteins (RBPs) bind cis-regulatory elements in the 3' untranslated regions (UTRs) of mRNA and regulate mRNA turnover and translation. In particular, eight RBPs (TTP, AUF1, KSRP, TIA-1/TIAR, Roquin, Regnase, HuR, and Arid5a) have been extensively studied and are key posttranscriptional regulators of inflammation and immune responses. These RBPs sometimes collaboratively or competitively bind the same target mRNA to enhance or dampen regulatory activities. These RBPs can also bind their own 3' UTRs to negatively or positively regulate their expression. Both upstream signaling pathways and microRNA regulation shape the interactions between RBPs and target RNA. Dysregulation of RBPs results in chronic inflammation and autoimmunity. Here, we summarize the functional roles of these eight RBPs in immunity and their associated diseases.
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Affiliation(s)
- Shizuo Akira
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0874, Japan.,Department of Host Defense, Division of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Osaka 565-0874, Japan;
| | - Kazuhiko Maeda
- Laboratory of Host Defense, WPI Immunology Frontier Research Center (IFReC), Osaka University, Osaka 565-0874, Japan.,Department of Host Defense, Division of Host Defense, Research Institute for Microbial Diseases (RIMD), Osaka University, Osaka 565-0874, Japan;
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21
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Xie Y, Zhao Y, Shi L, Li W, Chen K, Li M, Chen X, Zhang H, Li T, Matsuzawa-Ishimoto Y, Yao X, Shao D, Ke Z, Li J, Chen Y, Zhang X, Cui J, Cui S, Leng Q, Cadwell K, Li X, Wei H, Zhang H, Li H, Xiao H. Gut epithelial TSC1/mTOR controls RIPK3-dependent necroptosis in intestinal inflammation and cancer. J Clin Invest 2020; 130:2111-2128. [PMID: 31961824 DOI: 10.1172/jci133264] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 01/14/2020] [Indexed: 02/06/2023] Open
Abstract
Although Western diet and dysbiosis are the most prominent environmental factors associated with inflammatory bowel diseases (IBDs), the corresponding host factors and cellular mechanisms remain poorly defined. Here we report that the TSC1/mTOR pathway in the gut epithelium represents a metabolic and innate immune checkpoint for intestinal dysfunction and inflammation. mTOR hyperactivation triggered by Western diet or Tsc1 ablation led to epithelium necroptosis, barrier disruption, and predisposition to dextran sulfate sodium-induced colitis and inflammation-associated colon cancer. Mechanistically, our results uncovered a critical role for TSC1/mTOR in restraining the expression and activation of RIPK3 in the gut epithelium through TRIM11-mediated ubiquitination and autophagy-dependent degradation. Notably, microbiota depletion by antibiotics or gnotobiotics attenuated RIPK3 expression and activation, thereby alleviating epithelial necroptosis and colitis driven by mTOR hyperactivation. mTOR primarily impinged on RIPK3 to potentiate necroptosis induced by TNF and by microbial pathogen-associated molecular patterns (PAMPs), and hyperactive mTOR and aberrant necroptosis were intertwined in human IBDs. Together, our data reveal a previously unsuspected link between the Western diet, microbiota, and necroptosis and identify the mTOR/RIPK3/necroptosis axis as a driving force for intestinal inflammation and cancer.
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Affiliation(s)
- Yadong Xie
- The Center for Microbes, Development and Health, Chinese Academy of Sciences (CAS) Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai; CAS Center for Excellence in Molecular Cell Science; University of Chinese Academy of Sciences, CAS, Shanghai, China.,Center for Allergic and Inflammatory Diseases & Department of Otolaryngology, Head and Neck Surgery, Affiliated Eye, Ear, Nose and Throat Hospital, Fudan University, Shanghai, China
| | - Yifan Zhao
- The Center for Microbes, Development and Health, Chinese Academy of Sciences (CAS) Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai; CAS Center for Excellence in Molecular Cell Science; University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Lei Shi
- The Center for Microbes, Development and Health, Chinese Academy of Sciences (CAS) Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai; CAS Center for Excellence in Molecular Cell Science; University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Wei Li
- The Center for Microbes, Development and Health, Chinese Academy of Sciences (CAS) Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai; CAS Center for Excellence in Molecular Cell Science; University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Kun Chen
- Center for Allergic and Inflammatory Diseases & Department of Otolaryngology, Head and Neck Surgery, Affiliated Eye, Ear, Nose and Throat Hospital, Fudan University, Shanghai, China
| | - Min Li
- Center for Allergic and Inflammatory Diseases & Department of Otolaryngology, Head and Neck Surgery, Affiliated Eye, Ear, Nose and Throat Hospital, Fudan University, Shanghai, China
| | - Xia Chen
- The Center for Microbes, Development and Health, Chinese Academy of Sciences (CAS) Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai; CAS Center for Excellence in Molecular Cell Science; University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Haiwei Zhang
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Tiantian Li
- The Center for Microbes, Development and Health, Chinese Academy of Sciences (CAS) Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai; CAS Center for Excellence in Molecular Cell Science; University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Yu Matsuzawa-Ishimoto
- Kimmel Center for Biology and Medicine, Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York, New York, USA
| | - Xiaomin Yao
- Kimmel Center for Biology and Medicine, Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York, New York, USA
| | - Dianhui Shao
- The Center for Microbes, Development and Health, Chinese Academy of Sciences (CAS) Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai; CAS Center for Excellence in Molecular Cell Science; University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Zunfu Ke
- Department of Pathology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jian Li
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, China
| | - Yan Chen
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Xiaoming Zhang
- The Center for Microbes, Development and Health, Chinese Academy of Sciences (CAS) Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai; CAS Center for Excellence in Molecular Cell Science; University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Jun Cui
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Shuzhong Cui
- State Key Laboratory of Respiratory Diseases, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Qibin Leng
- State Key Laboratory of Respiratory Diseases, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ken Cadwell
- Kimmel Center for Biology and Medicine, Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York, New York, USA
| | - Xiaoxia Li
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Hong Wei
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, China
| | - Haibing Zhang
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Huabin Li
- Center for Allergic and Inflammatory Diseases & Department of Otolaryngology, Head and Neck Surgery, Affiliated Eye, Ear, Nose and Throat Hospital, Fudan University, Shanghai, China.,Department of Pathology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Hui Xiao
- The Center for Microbes, Development and Health, Chinese Academy of Sciences (CAS) Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai; CAS Center for Excellence in Molecular Cell Science; University of Chinese Academy of Sciences, CAS, Shanghai, China
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22
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Fritsch SD, Weichhart T. Metabolic and immunologic control of intestinal cell function by mTOR. Int Immunol 2020; 32:455-465. [PMID: 32140726 DOI: 10.1093/intimm/dxaa015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 02/28/2020] [Indexed: 02/06/2023] Open
Abstract
The intestinal epithelium is one of the most quickly dividing tissues in our body, combining the absorptive advantages of a single layer with the protection of a constantly renewing barrier. It is continuously exposed to nutrients and commensal bacteria as well as microbial and host-derived metabolites, but also to hazards such as pathogenic bacteria and toxins. These environmental cues are sensed by the mucosa and a vast repertory of immune cells, especially macrophages. A disruption of intestinal homeostasis in terms of barrier interruption can lead to inflammatory bowel diseases and colorectal cancer, and macrophages have an important role in restoring epithelial function following injury. The mammalian/mechanistic target of rapamycin (mTOR) signalling pathway senses environmental cues and integrates metabolic responses. It has emerged as an important regulator of intestinal functions in homeostasis and disease. In this review, we are going to discuss intestinal mTOR signalling and metabolic regulation in different intestinal cell populations with a special focus on immune cells and their actions on intestinal function.
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Affiliation(s)
- Stephanie D Fritsch
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Währinger Straße, Vienna, Austria
| | - Thomas Weichhart
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Währinger Straße, Vienna, Austria
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23
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Torretta S, Scagliola A, Ricci L, Mainini F, Di Marco S, Cuccovillo I, Kajaste-Rudnitski A, Sumpton D, Ryan KM, Cardaci S. D-mannose suppresses macrophage IL-1β production. Nat Commun 2020; 11:6343. [PMID: 33311467 PMCID: PMC7733482 DOI: 10.1038/s41467-020-20164-6] [Citation(s) in RCA: 111] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 11/13/2020] [Indexed: 01/01/2023] Open
Abstract
D-mannose is a monosaccharide approximately a hundred times less abundant than glucose in human blood. Previous studies demonstrated that supraphysiological levels of D-mannose inhibit tumour growth and stimulate regulatory T cell differentiation. It is not known whether D-mannose metabolism affects the function of non-proliferative cells, such as inflammatory macrophages. Here, we show that D-mannose suppresses LPS-induced macrophage activation by impairing IL-1β production. In vivo, mannose administration improves survival in a mouse model of LPS-induced endotoxemia as well as decreases progression in a mouse model of DSS-induced colitis. Phosphomannose isomerase controls response of LPS-activated macrophages to D-mannose, which impairs glucose metabolism by raising intracellular mannose-6-phosphate levels. Such alterations result in the suppression of succinate-mediated HIF-1α activation, imposing a consequent reduction of LPS-induced Il1b expression. Disclosing an unrecognized metabolic hijack of macrophage activation, our study points towards safe D-mannose utilization as an effective intervention against inflammatory conditions.
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Affiliation(s)
- Simone Torretta
- Cancer Metabolism Unit, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Alessandra Scagliola
- Cancer Metabolism Unit, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Luisa Ricci
- Cancer Metabolism Unit, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Francesco Mainini
- Cancer Metabolism Unit, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Sabrina Di Marco
- Cancer Metabolism Unit, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Ivan Cuccovillo
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Anna Kajaste-Rudnitski
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | | | | | - Simone Cardaci
- Cancer Metabolism Unit, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy.
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24
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Li Q, Cheng H, Liu Y, Wang X, He F, Tang L. Activation of mTORC1 by LSECtin in macrophages directs intestinal repair in inflammatory bowel disease. Cell Death Dis 2020; 11:918. [PMID: 33106485 PMCID: PMC7589503 DOI: 10.1038/s41419-020-03114-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 09/30/2020] [Accepted: 10/01/2020] [Indexed: 12/15/2022]
Abstract
Damage to intestinal epithelial cells and the induction of cellular apoptosis are characteristics of inflammatory bowel disease. The C-type lectin receptor family member LSECtin promotes apoptotic cell clearance by macrophages and induces the production of anti-inflammatory/tissue growth factors, which direct intestinal repair in experimental colitis. However, the mechanisms by which the phagocytosis of apoptotic cells triggers the pro-repair function of macrophages remain largely undefined. Here, using immunoprecipitation in combination with mass spectrometry to identify LSECtin-interacting proteins, we found that LSECtin interacted with mTOR, exhibiting a role in activating mTORC1. Mechanistically, apoptotic cells enhance the interaction between LSECtin and mTOR, and increase the activation of mTORC1 induced by LSECtin in macrophages. Elevated mTORC1 signaling triggers macrophages to produce anti-inflammatory/tissue growth factors that contribute to the proliferation of epithelial cells and promote the reestablishment of tissue homeostasis. Collectively, our findings suggest that LSECtin-dependent apoptotic cell clearance by macrophages activates mTORC1, and thus contributes to intestinal regeneration and the remission of colitis.
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Affiliation(s)
- Qian Li
- Institute of Biomedical Sciences, Fudan University, 200032, Shanghai, China
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, 102206, Beijing, China
| | - Hanxing Cheng
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, 102206, Beijing, China
| | - Yuanping Liu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, 102206, Beijing, China
| | - Xiaowen Wang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, 102206, Beijing, China
| | - Fuchu He
- Institute of Biomedical Sciences, Fudan University, 200032, Shanghai, China.
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, 102206, Beijing, China.
| | - Li Tang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, 102206, Beijing, China.
- Department of Biochemistry and Molecular Biology, Anhui Medical University, 230032, Hefei, China.
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25
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Calender A, Weichhart T, Valeyre D, Pacheco Y. Current Insights in Genetics of Sarcoidosis: Functional and Clinical Impacts. J Clin Med 2020; 9:E2633. [PMID: 32823753 PMCID: PMC7465171 DOI: 10.3390/jcm9082633] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/05/2020] [Accepted: 08/11/2020] [Indexed: 12/17/2022] Open
Abstract
Sarcoidosis is a complex disease that belongs to the vast group of autoinflammatory disorders, but the etiological mechanisms of which are not known. At the crosstalk of environmental, infectious, and genetic factors, sarcoidosis is a multifactorial disease that requires a multidisciplinary approach for which genetic research, in particular, next generation sequencing (NGS) tools, has made it possible to identify new pathways and propose mechanistic hypotheses. Codified treatments for the disease cannot always respond to the most progressive forms and the identification of new genetic and metabolic tracks is a challenge for the future management of the most severe patients. Here, we review the current knowledge regarding the genes identified by both genome wide association studies (GWAS) and whole exome sequencing (WES), as well the connection of these pathways with the current research on sarcoidosis immune-related disorders.
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Affiliation(s)
- Alain Calender
- Department of Molecular and Medical genetics, Hospices Civils de Lyon, University Hospital, 69500 Bron, France;
- CNRS UMR 5305, Tissue Biology and Therapeutic Engineering Laboratory, University Claude Bernard Lyon 1, 69007 Lyon, France
| | - Thomas Weichhart
- Center for Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, 1090 Vienna, Austria;
| | - Dominique Valeyre
- INSERM UMR 1272, Department of Pulmonology, Avicenne Hospital, University Sorbonne Paris Nord, Saint Joseph Hospital, AP-HP, 75014 Paris, France;
| | - Yves Pacheco
- Department of Molecular and Medical genetics, Hospices Civils de Lyon, University Hospital, 69500 Bron, France;
- CNRS UMR 5305, Tissue Biology and Therapeutic Engineering Laboratory, University Claude Bernard Lyon 1, 69007 Lyon, France
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26
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Fischer M, Weinberger T, Schulz C. The immunomodulatory role of Regnase family RNA-binding proteins. RNA Biol 2020; 17:1721-1726. [PMID: 32752923 DOI: 10.1080/15476286.2020.1795584] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
RNA-binding proteins regulate RNA fate and govern post-transcriptional gene regulation. A new family of RNA-binding proteins is represented by regulatory RNases (Regnase, also known as Zc3h12 or MCPIP), which have emerged as important players in immune homoeostasis. Four members, Regnase1-4, have been identified to date. Here we summarize recent findings on the role of Regnase in the regulation of RNA biology and its consequences for cell functions and inflammatory processes.
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Affiliation(s)
- Maximilian Fischer
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universitaet , Munich, Germany.,German Center for Cardiovascular Research (DZHK) , Munich, Germany
| | - Tobias Weinberger
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universitaet , Munich, Germany.,German Center for Cardiovascular Research (DZHK) , Munich, Germany
| | - Christian Schulz
- Medizinische Klinik und Poliklinik I, Ludwig-Maximilians-Universitaet , Munich, Germany.,German Center for Cardiovascular Research (DZHK) , Munich, Germany
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27
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Song Y, Hu W, Xiao Y, Li Y, Wang X, He W, Hou J, Liu Y, Liang G, Huang C. Keratinocyte growth factor ameliorates mycophenolate mofetil-induced intestinal barrier disruption in mice. Mol Immunol 2020; 124:61-69. [PMID: 32534355 DOI: 10.1016/j.molimm.2020.04.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 03/11/2020] [Accepted: 04/13/2020] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Although mycophenolate mofetil-induced (MMF) effectively improves long-term graft survival, the gastrointestinal (GI) side effects due to MMF-induced GI barrier damage limit its use in clinic. Keratinocyte growth factor (KGF) plays a crucial role in the intestinal protection and repair process. This study is designed to investigate the protective effect of KGF on MMF-induced intestinal mucosal barrier disruption and the potential mechanism. METHODS Thirty adult male C57BL/6 mice were assigned to one of the following groups: the MMF group, the MMF + KGF group, and the control group (n = 10 in each group). Animals in the MMF group received MMF (500 mg/kg) by gavage once daily for 15 consecutive days; animals in the MMF + KGF group received MMF (500 mg/kg) by gavage and KGF (5 mg/kg) by intraperitoneal injection once daily for 15 consecutive days; and control mice were given an equal volume of vehicle during the 15-day experimental period. In each group, intestinal paracellular permeability, histopathological changes and shifts in tight junction (TJ) protein were evaluated; further, proliferation and apoptosis of intestinal epithelial cells (IECs) were assessed, and intraepithelial lymphocytes (IELs) were isolated and analyzed by flow cytometry. RESULTS MMF caused intestinal mucosal injury, increased intestinal mucosal permeability, and altered expression of TJ protein. Moreover, MMF treatment inhibited IEC proliferation and increased apoptosis. MMF treatment resulted in a lower proportion of γδ+ T cells in IELs (γδ+ IELs). Conversely, concurrent administration of KGF with MMF effectively alleviated MMF-induced intestinal mucosal disruption, inhibited the increase in intestinal permeability, and maintained TJ protein expression. KGF also reversed the MMF-mediated inhibition of proliferation and promotion of apoptosis in IECs. In addition, KGF significantly enhanced the proportion of γδ+ IELs. CONCLUSION Our findings suggest that MMF induces intestinal epithelial barrier disruption in mice. KGF may play a protective role to ameliorate the disruption and provide a therapeutic intervention for gastrointestinal disorders induced by MMF.
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Affiliation(s)
- Yajun Song
- Department of Urology, Xinqiao Hospital, the Third Military Medical University, NO.83 Xinqiao Street, Shapingba District, Chongqing, China
| | - Wengang Hu
- Nephrology and Urology Department, the University-Town Hospital of Chongqing Medical University, No.55 Middle University Road, Shapingba District, Chongqing. China
| | - Ya Xiao
- Department of Urology, Xinqiao Hospital, the Third Military Medical University, NO.83 Xinqiao Street, Shapingba District, Chongqing, China
| | - Yang Li
- Department of Urology, Xinqiao Hospital, the Third Military Medical University, NO.83 Xinqiao Street, Shapingba District, Chongqing, China
| | - Xu Wang
- Department of Urology, Xinqiao Hospital, the Third Military Medical University, NO.83 Xinqiao Street, Shapingba District, Chongqing, China
| | - Weifeng He
- Institute of Burn Research, Southwest Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, the Third Military Medical University, No.30 Gaotanyan Street, Shapingba District, Chongqing, China
| | - Jingming Hou
- Department of Rehabilitation, Southwest Hospital, the Third Military Medical University, No.30 Gaotanyan Street, Shapingba District, Chongqing, China
| | - Yun Liu
- Department of Urology, Xinqiao Hospital, the Third Military Medical University, NO.83 Xinqiao Street, Shapingba District, Chongqing, China
| | - Guangping Liang
- Institute of Burn Research, Southwest Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, the Third Military Medical University, No.30 Gaotanyan Street, Shapingba District, Chongqing, China.
| | - Chibing Huang
- Department of Urology, Xinqiao Hospital, the Third Military Medical University, NO.83 Xinqiao Street, Shapingba District, Chongqing, China.
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28
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Somatic inflammatory gene mutations in human ulcerative colitis epithelium. Nature 2019; 577:254-259. [PMID: 31853059 DOI: 10.1038/s41586-019-1844-5] [Citation(s) in RCA: 179] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 10/31/2019] [Indexed: 12/15/2022]
Abstract
With ageing, normal human tissues experience an expansion of somatic clones that carry cancer mutations1-7. However, whether such clonal expansion exists in the non-neoplastic intestine remains unknown. Here, using whole-exome sequencing data from 76 clonal human colon organoids, we identify a unique pattern of somatic mutagenesis in the inflamed epithelium of patients with ulcerative colitis. The affected epithelium accumulates somatic mutations in multiple genes that are related to IL-17 signalling-including NFKBIZ, ZC3H12A and PIGR, which are genes that are rarely affected in colon cancer. Targeted sequencing validates the pervasive spread of mutations that are related to IL-17 signalling. Unbiased CRISPR-based knockout screening in colon organoids reveals that the mutations confer resistance to the pro-apoptotic response that is induced by IL-17A. Some of these genetic mutations are known to exacerbate experimental colitis in mice8-11, and somatic mutagenesis in human colon epithelium may be causally linked to the inflammatory process. Our findings highlight a genetic landscape that adapts to a hostile microenvironment, and demonstrate its potential contribution to the pathogenesis of ulcerative colitis.
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29
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Grazioso TP, Brandt M, Djouder N. Diet, Microbiota, and Colorectal Cancer. iScience 2019; 21:168-187. [PMID: 31669832 PMCID: PMC6889474 DOI: 10.1016/j.isci.2019.10.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 07/03/2019] [Accepted: 10/02/2019] [Indexed: 02/07/2023] Open
Abstract
The intestinal epithelium is a very dynamic tissue under a high regenerative pressure, which makes it susceptible to malignant transformation. Proper integration of various cell signaling pathways and a balanced cross talk between different cell types composing the organ are required to maintain intestinal homeostasis. Dysregulation of this balance can lead to colorectal cancer (CRC). Here, we review important insights into molecular and cellular mechanisms of CRC. We discuss how perturbation in complex regulatory networks, including the Wnt, Notch, BMP, and Hedgehog pathways; and how variations in inflammatory signaling, nutrients, and microbiota can affect intestinal homeostasis contributing to the malignant transformation of intestinal cells.
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Affiliation(s)
- Tatiana P Grazioso
- Molecular Oncology Programme, Growth Factors, Nutrients and Cancer Group, Centro Nacional Investigaciones Oncológicas, CNIO, Madrid 28029, Spain
| | - Marta Brandt
- Molecular Oncology Programme, Growth Factors, Nutrients and Cancer Group, Centro Nacional Investigaciones Oncológicas, CNIO, Madrid 28029, Spain
| | - Nabil Djouder
- Molecular Oncology Programme, Growth Factors, Nutrients and Cancer Group, Centro Nacional Investigaciones Oncológicas, CNIO, Madrid 28029, Spain.
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30
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Wei X, Luo L, Chen J. Roles of mTOR Signaling in Tissue Regeneration. Cells 2019; 8:cells8091075. [PMID: 31547370 PMCID: PMC6769890 DOI: 10.3390/cells8091075] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/06/2019] [Accepted: 09/07/2019] [Indexed: 12/11/2022] Open
Abstract
The mammalian target of rapamycin (mTOR), is a serine/threonine protein kinase and belongs to the phosphatidylinositol 3-kinase (PI3K)-related kinase (PIKK) family. mTOR interacts with other subunits to form two distinct complexes, mTORC1 and mTORC2. mTORC1 coordinates cell growth and metabolism in response to environmental input, including growth factors, amino acid, energy and stress. mTORC2 mainly controls cell survival and migration through phosphorylating glucocorticoid-regulated kinase (SGK), protein kinase B (Akt), and protein kinase C (PKC) kinase families. The dysregulation of mTOR is involved in human diseases including cancer, cardiovascular diseases, neurodegenerative diseases, and epilepsy. Tissue damage caused by trauma, diseases or aging disrupt the tissue functions. Tissue regeneration after injuries is of significance for recovering the tissue homeostasis and functions. Mammals have very limited regenerative capacity in multiple tissues and organs, such as the heart and central nervous system (CNS). Thereby, understanding the mechanisms underlying tissue regeneration is crucial for tissue repair and regenerative medicine. mTOR is activated in multiple tissue injuries. In this review, we summarize the roles of mTOR signaling in tissue regeneration such as neurons, muscles, the liver and the intestine.
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Affiliation(s)
- Xiangyong Wei
- Laboratory of Molecular Developmental Biology, School of Life Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Lingfei Luo
- Laboratory of Molecular Developmental Biology, School of Life Sciences, Southwest University, Beibei, Chongqing 400715, China.
| | - Jinzi Chen
- Laboratory of Molecular Developmental Biology, School of Life Sciences, Southwest University, Beibei, Chongqing 400715, China.
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31
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Zhu L, Liao SE, Fukunaga R. Drosophila Regnase-1 RNase is required for mRNA and miRNA profile remodelling during larva-to-adult metamorphosis. RNA Biol 2019; 16:1386-1400. [PMID: 31195914 DOI: 10.1080/15476286.2019.1630799] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Metamorphosis is an intricate developmental process in which large-scale remodelling of mRNA and microRNA (miRNA) profiles leads to orchestrated tissue remodelling and organogenesis. Whether, which, and how, ribonucleases (RNases) are involved in the RNA profile remodelling during metamorphosis remain unknown. Human Regnase-1 (also known as MCPIP1 and Zc3h12a) RNase remodels RNA profile by cleaving specific RNAs and is a crucial modulator of immune-inflammatory and cellular defence. Here, we studied Drosophila CG10889, which we named Drosophila Regnase-1, an ortholog of human Regnase-1. The larva-to-adult metamorphosis in Drosophila includes two major transitions, larva-to-pupa and pupa-to-adult. regnase-1 knockout flies developed until the pupa stage but could not complete pupa-to-adult transition, dying in puparium case. Regnase-1 RNase activity is required for completion of pupa-to-adult transition as transgenic expression of wild-type Drosophila Regnase-1, but not the RNase catalytic-dead mutants, rescued the pupa-to-adult transition in regnase-1 knockout. High-throughput RNA sequencing revealed that regnase-1 knockout flies fail to remodel mRNA and miRNA profiles during the larva-to-pupa transition. Thus, we uncovered the roles of Drosophila Regnase-1 in the larva-to-adult metamorphosis and large-scale remodelling of mRNA and miRNA profiles during this metamorphosis process.
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Affiliation(s)
- Li Zhu
- Department of Biological Chemistry, Johns Hopkins University School of Medicine , Baltimore , MD , USA
| | - Susan E Liao
- Department of Biological Chemistry, Johns Hopkins University School of Medicine , Baltimore , MD , USA
| | - Ryuya Fukunaga
- Department of Biological Chemistry, Johns Hopkins University School of Medicine , Baltimore , MD , USA
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32
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Yoshinaga M, Takeuchi O. Post-transcriptional control of immune responses and its potential application. Clin Transl Immunology 2019; 8:e1063. [PMID: 31236273 DOI: 10.1002/cti2.1063] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/14/2019] [Accepted: 05/17/2019] [Indexed: 12/14/2022] Open
Abstract
Inflammation is the host response against stresses such as infection. Although the inflammation process is required for the elimination of pathogens, uncontrolled inflammation leads to tissue destruction and inflammatory diseases. To avoid this, the inflammatory response is tightly controlled by multiple layers of regulation. Post-transcriptional control of inflammatory mRNAs is increasingly understood to perform critical roles in this process. This is mediated primarily by a set of RNA binding proteins (RBPs) including tristetraprolin, Roquin and Regnase-1, and RNA methylases. These key regulators coordinate the inflammatory response by modulating mRNA pools in both immune and local nonimmune cells. In this review, we provide an overview of the post-transcriptional coordination of immune responses in various tissues and discuss how RBP-mediated regulation of inflammation may be harnessed as a potential class of treatments for inflammatory diseases.
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Affiliation(s)
- Masanori Yoshinaga
- Department of Medical Chemistry Graduate School of Medicine Kyoto University Kyoto Japan
| | - Osamu Takeuchi
- Department of Medical Chemistry Graduate School of Medicine Kyoto University Kyoto Japan
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