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Uddin MJ, Thompson B, Leslie JL, Fishman C, Sol-church K, Kumar P, Petri WA. Investigating the impact of antibiotic-induced dysbiosis on protection from Clostridium difficile colitis by mouse colonic innate lymphoid cells. mBio 2024; 15:e0333823. [PMID: 38376154 PMCID: PMC11209775 DOI: 10.1128/mbio.03338-23] [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: 12/12/2023] [Accepted: 01/18/2024] [Indexed: 02/21/2024] Open
Abstract
Innate lymphoid cells (ILCs) play a critical role in maintaining intestinal health in homeostatic and diseased conditions. During Clostridium difficile infection (CDI), IL-33 activates ILC2 to protect from colonic damage and mortality. The function of IL-33 and ILC is tightly regulated by the intestinal microbiota. We set out to determine the impact of antibiotic-induced disruption of the microbiome on ILC function. Our goal was to understand antibiotic-induced changes in ILC function on susceptibility to C. difficile colitis in a mouse model. We utilized high-throughput single-cell RNAseq to investigate the phenotypic features of colonic ILC at baseline, after antibiotic administration with or without IL-33 treatment. We identified a heterogeneous landscape of colonic ILCs with gene signatures of inflammatory, anti-inflammatory, migratory, progenitor, plastic, and antigen-presenting ILCs. Antibiotic treatment decreased ILC2 while coordinately increasing ILC1 and ILC3 phenotypes. Notably, Ifng+, Ccl5+, and Il23r+ ILC increased after antibiotics. IL-33 treatment counteracted the antibiotic effect by downregulating ILC1 and ILC3 and activating ILC2. In addition, IL-33 treatment markedly induced the expression of type 2 genes, including Areg and Il5. Finally, we identified amphiregulin, produced by ILC2, as protective during C. difficile infection. Together, our data expand our understanding of how antibiotics induce susceptibility to C. difficile colitis through their impact on ILC subsets and function.IMPORTANCEClostridium difficile infection (CDI) accounts for around 500,000 symptomatic cases and over 20,000 deaths annually in the United States alone. A major risk factor of CDI is antibiotic-induced dysbiosis of the gut. Microbiota-regulated IL-33 and innate lymphoid cells (ILCs) are important in determining the outcomes of C. difficile infection. Understanding how antibiotic and IL-33 treatment alter the phenotype of colon ILCs is important to identify potential therapeutics. Here, we performed single-cell RNAseq of mouse colon ILCs collected at baseline, after antibiotic treatment, and after IL-33 treatment. We identified heterogeneous subpopulations of all three ILC subtypes in the mouse colon. Our analysis revealed several potential pathways of antibiotic-mediated increased susceptibility to intestinal infection. Our discovery that Areg is abundantly expressed by ILCs, and the protection of mice from CDI by amphiregulin treatment, suggests that the amphiregulin-epidermal growth factor receptor pathway is a potential therapeutic target for treating intestinal colitis.
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Affiliation(s)
- Md Jashim Uddin
- Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Brandon Thompson
- Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Jhansi L. Leslie
- Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia, USA
- Arcus Biosciences, Hayward, California, USA
| | - Casey Fishman
- Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Katia Sol-church
- Genome Analysis and Technology Core, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Pankaj Kumar
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - William A. Petri
- Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia, USA
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Massironi S, Mulinacci G, Gallo C, Elvevi A, Danese S, Invernizzi P, Vespa E. Mechanistic Insights into Eosinophilic Esophagitis: Therapies Targeting Pathophysiological Mechanisms. Cells 2023; 12:2473. [PMID: 37887317 PMCID: PMC10605530 DOI: 10.3390/cells12202473] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/12/2023] [Accepted: 10/16/2023] [Indexed: 10/28/2023] Open
Abstract
Eosinophilic esophagitis (EoE) is a chronic inflammatory disease characterized by eosinophilic infiltration of the esophagus. It arises from a complex interplay of genetic predisposition (susceptibility loci), environmental triggers (allergens and dietary antigens), and a dysregulated immune response, mainly mediated by type 2 T helper cell (Th2)-released cytokines, such as interleukin (IL)-4, IL-5, and IL-13. These cytokines control eosinophil recruitment and activation as well as tissue remodeling, contributing to the characteristic features of EoE. The pathogenesis of EoE includes epithelial barrier dysfunction, mast cell activation, eosinophil degranulation, and fibrosis. Epithelial barrier dysfunction allows allergen penetration and promotes immune cell infiltration, thereby perpetuating the inflammatory response. Mast cells release proinflammatory mediators and promote eosinophil recruitment and the release of cytotoxic proteins and cytokines, causing tissue damage and remodeling. Prolonged inflammation can lead to fibrosis, resulting in long-term complications such as strictures and dysmotility. Current treatment options for EoE are limited and mainly focus on dietary changes, proton-pump inhibitors, and topical corticosteroids. Novel therapies targeting key inflammatory pathways, such as monoclonal antibodies against IL-4, IL-5, and IL-13, are emerging in clinical trials. A deeper understanding of the complex pathogenetic mechanisms behind EoE will contribute to the development of more effective and personalized therapeutic strategies.
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Affiliation(s)
- Sara Massironi
- Division of Gastroenterology, Center for Autoimmune Liver Diseases, European Reference Network on Hepatological Diseases (ERN RARE-LIVER), Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy; (G.M.); (C.G.); (A.E.)
- School of Medicine and Surgery, University of Milano-Bicocca, 20125 Milan, Italy
| | - Giacomo Mulinacci
- Division of Gastroenterology, Center for Autoimmune Liver Diseases, European Reference Network on Hepatological Diseases (ERN RARE-LIVER), Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy; (G.M.); (C.G.); (A.E.)
- School of Medicine and Surgery, University of Milano-Bicocca, 20125 Milan, Italy
| | - Camilla Gallo
- Division of Gastroenterology, Center for Autoimmune Liver Diseases, European Reference Network on Hepatological Diseases (ERN RARE-LIVER), Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy; (G.M.); (C.G.); (A.E.)
- School of Medicine and Surgery, University of Milano-Bicocca, 20125 Milan, Italy
| | - Alessandra Elvevi
- Division of Gastroenterology, Center for Autoimmune Liver Diseases, European Reference Network on Hepatological Diseases (ERN RARE-LIVER), Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy; (G.M.); (C.G.); (A.E.)
| | - Silvio Danese
- Gastroenterology and Endoscopy, IRCCS Ospedale San Raffaele, Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Pietro Invernizzi
- Division of Gastroenterology, Center for Autoimmune Liver Diseases, European Reference Network on Hepatological Diseases (ERN RARE-LIVER), Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy; (G.M.); (C.G.); (A.E.)
- School of Medicine and Surgery, University of Milano-Bicocca, 20125 Milan, Italy
| | - Edoardo Vespa
- Gastroenterology and Endoscopy, IRCCS Ospedale San Raffaele, Vita-Salute San Raffaele University, 20132 Milan, Italy
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3
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Roy R, Das T, Biswas N. Orchestration of immune response by innate lymphoid cell subtype 2 at various tumor microenvironment, a suitable target for cancer immunotherapy. Int Rev Immunol 2023; 43:74-82. [PMID: 37599626 DOI: 10.1080/08830185.2023.2247021] [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: 06/27/2022] [Revised: 06/16/2023] [Accepted: 06/26/2023] [Indexed: 08/22/2023]
Abstract
Innate lymphoid cells are a mixed population of cells and critical regulators of our innate immune system. According to recent scientific literature, tissue resident innate lymphoid cell subtype 2 has been recognized as an important player of type 2 inflammatory responses, involved in different human malignancies like pancreatic, lung, acute myeloid leukemia, gastrointestinal tract cancer, etc. The current reports have revealed that, among the three main ILC sub types, subtype 2 (ILC 2), as the key regulator of initiating the type 2 inflammatory responses at the tumor microenvironment (TME). This activation of ILC-2 is a very important step for the specific downstream functioning of ILC-2. Priming of ILC-2 with different chemokines involves different cytokine secretion from the activated ILC-2 like IL-4, IL-5, IL-13, IL-9 which induce type 2 inflammatory responses involved in the complex interaction with other immune cells like NK cell, Cytotoxic T cell, MDSC and Treg cell. At the initial stage, ILC-2 activation through IL-33 may induce the anti-tumorigenic effect mediated by ILC-2/eosinophil axis. However, it is also evident that PDG2 (Prostaglandin D2)-mediated activation of ILC-2 induces the ILC-2/MDSC immune suppressive pro-tumorigenic niche at the TME. Here, in this review, we have summarized the function of ILC-2 on cancer immunity based on recent scientific work which indicates ILC-2 plays a dual role and orchestrates the immune responses toward type 2 immunity in different cancer settings.
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Affiliation(s)
- Rajdeep Roy
- Department of Life Sciences, Presidency University, Kolkata, India
| | - Tanmoy Das
- Department of Zoology, Visva-Bharati University, Shantiniketan, West Bengal, India
| | - Nabendu Biswas
- Department of Life Sciences, Presidency University, Kolkata, India
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Honda M, Kadohisa M, Yoshii D, Komohara Y, Hibi T. Intravital imaging of immune responses in intestinal inflammation. Inflamm Regen 2023; 43:9. [PMID: 36737792 PMCID: PMC9896837 DOI: 10.1186/s41232-023-00262-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
To date, many kinds of immune cells have been identified, but their precise roles in intestinal immunity remain unclear. Understanding the in vivo behavior of these immune cells and their function in gastrointestinal inflammation, including colitis, inflammatory bowel disease, ischemia-reperfusion injury, and neutrophil extracellular traps, is critical for gastrointestinal research to proceed to the next step. Additionally, understanding the immune responses involved in gastrointestinal tumors and tissue repair is becoming increasingly important for the elucidation of disease mechanisms that have been unknown. In recent years, the application of intravital microscopy in gastrointestinal research has provided novel insights into the mechanisms of intestine-specific events including innate and adaptive immunities. In this review, we focus on the emerging role of intravital imaging in gastrointestinal research and describe how to observe the intestines and immune cells using intravital microscopy. Additionally, we outline novel findings obtained by this new technique.
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Affiliation(s)
- Masaki Honda
- grid.274841.c0000 0001 0660 6749Department of Pediatric Surgery and Transplantation, Kumamoto University Graduate School of Medical Sciences, 1-1-1 Honjo, Chuo-Ku, Kumamoto, 860-8556 Japan
| | - Masashi Kadohisa
- grid.274841.c0000 0001 0660 6749Department of Pediatric Surgery and Transplantation, Kumamoto University Graduate School of Medical Sciences, 1-1-1 Honjo, Chuo-Ku, Kumamoto, 860-8556 Japan
| | - Daiki Yoshii
- grid.411152.20000 0004 0407 1295Department of Diagnostic Pathology, Kumamoto University Hospital, Kumamoto, Japan
| | - Yoshihiro Komohara
- grid.274841.c0000 0001 0660 6749Department of Cell Pathology, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
| | - Taizo Hibi
- grid.274841.c0000 0001 0660 6749Department of Pediatric Surgery and Transplantation, Kumamoto University Graduate School of Medical Sciences, 1-1-1 Honjo, Chuo-Ku, Kumamoto, 860-8556 Japan
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5
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Ng CK, Belz GT. Innate lymphoid cells: potential targets for cancer therapeutics. Trends Cancer 2023; 9:158-171. [PMID: 36357314 DOI: 10.1016/j.trecan.2022.10.007] [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: 08/16/2022] [Revised: 10/07/2022] [Accepted: 10/17/2022] [Indexed: 11/10/2022]
Abstract
Innate lymphoid cells (ILCs) comprise a number of different subsets, including natural killer (NK) cells, ILC1s, ILC2s, ILC3s, and lymphoid tissue-inducer (LTi) cells that express receptors and signaling pathways that are highly responsive to continuously changing microenvironmental cues. In this Review, we highlight the key features of innate cells that define their capacity to respond rapidly to different environments, how this ability can drive both tumor protection (limiting tumor development) or, alternatively, tumor progression, promoting tumor dissemination and resistance to immunotherapy. We discuss how understanding the regulation of ILCs that can detect tumor cells early in a response opens the possibility of exploiting this functional plasticity to develop rational therapeutic strategies to bolster adaptive immune responses and improve patient outcomes.
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Affiliation(s)
- Chun Ki Ng
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Woolloongabba, QLD 4102, Australia
| | - Gabrielle T Belz
- The University of Queensland Diamantina Institute, Faculty of Medicine, The University of Queensland, Woolloongabba, QLD 4102, Australia.
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Ghilas S, O’Keefe R, Mielke LA, Raghu D, Buchert M, Ernst M. Crosstalk between epithelium, myeloid and innate lymphoid cells during gut homeostasis and disease. Front Immunol 2022; 13:944982. [PMID: 36189323 PMCID: PMC9524271 DOI: 10.3389/fimmu.2022.944982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 08/29/2022] [Indexed: 12/05/2022] Open
Abstract
The gut epithelium not only provides a physical barrier to separate a noxious outside from a sterile inside but also allows for highly regulated interactions between bacteria and their products, and components of the immune system. Homeostatic maintenance of an intact epithelial barrier is paramount to health, requiring an intricately regulated and highly adaptive response of various cells of the immune system. Prolonged homeostatic imbalance can result in chronic inflammation, tumorigenesis and inefficient antitumor immune control. Here we provide an update on the role of innate lymphoid cells, macrophages and dendritic cells, which collectively play a critical role in epithelial barrier maintenance and provide an important linkage between the classical innate and adaptive arm of the immune system. These interactions modify the capacity of the gut epithelium to undergo continuous renewal, safeguard against tumor formation and provide feedback to the gut microbiome, which acts as a seminal contributor to cellular homeostasis of the gut.
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Affiliation(s)
- Sonia Ghilas
- Mucosal Immunity Laboratory, Olivia Newton-John Cancer Research Institute, and La Trobe University - School of Cancer Medicine, Heidelberg, VIC, Australia
| | - Ryan O’Keefe
- Cancer and Inflammation Program, Olivia Newton-John Cancer Research Institute, and La Trobe University - School of Cancer Medicine, Heidelberg, VIC, Australia
| | - Lisa Anna Mielke
- Mucosal Immunity Laboratory, Olivia Newton-John Cancer Research Institute, and La Trobe University - School of Cancer Medicine, Heidelberg, VIC, Australia
| | - Dinesh Raghu
- Mucosal Immunity Laboratory, Olivia Newton-John Cancer Research Institute, and La Trobe University - School of Cancer Medicine, Heidelberg, VIC, Australia
| | - Michael Buchert
- Cancer and Inflammation Program, Olivia Newton-John Cancer Research Institute, and La Trobe University - School of Cancer Medicine, Heidelberg, VIC, Australia
- *Correspondence: Michael Buchert, ; Matthias Ernst,
| | - Matthias Ernst
- Cancer and Inflammation Program, Olivia Newton-John Cancer Research Institute, and La Trobe University - School of Cancer Medicine, Heidelberg, VIC, Australia
- *Correspondence: Michael Buchert, ; Matthias Ernst,
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7
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Cuéllar C, Rodero M, Pérez-Griera J, Galindo-Regal L, Lopez-Chulia F, García-Ballesteros C, Carlos Andreu-Ballester J. Association between anti-Anisakis simplex antibodies and interleukin-7 levels. Int Immunopharmacol 2022; 111:109134. [PMID: 35964412 DOI: 10.1016/j.intimp.2022.109134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/27/2022] [Accepted: 08/03/2022] [Indexed: 11/18/2022]
Abstract
IL-7 is a crucial factor for the development of lymphocytes, and it is absolutely necessary for γδ T cells. Mice deficient in L-7 have a deficit of B and αβ T lymphocytes, and an absence of mature γδ TCR cells. IL-7 is essential for the survival, development and maturation of Schistosoma sp., although its production is associated with protection against intestinal helminths. The presence of anti-Anisakis simplex antibodies, especially IgA, is related to a lower frequency in CD3 + CD56 + αβ + lymphocytes and all subpopulations of γδ T cells. In this work, the relationship of IL-7 with humoral and cellular responses against A. simplex in 100 healthy subjects was studied. We have found significantly higher IL-7 levels in anti-A. simplex IgA-positive subjects (p < 0.001). The positivity of anti-A. simplex IgA was associated with a significant reduction in the frequency of CD3 + αβ+ (p < 0.01), CD3 + CD4 + αβ+, CD3 + CD8 + αβ+, CD3 + CD56 + αβ+, CD3 + γδ+, CD3 + CD4-CD8-γδ+ and CD3 + CD56 + γδ+ (p < 0.05) cells. In the case of NKT cells, this same phenomenon was also associated with IgE positivity. There was a weak inverse correlation (Spearman) of IL-7 levels with the frequencies of CD3 + CD4 + αβ+ (-0.125, p = 0.047), CD3 + CD8 + αβ+ (-0.204, p = 0.032), CD3 + CD56 + αβ+ (-0.247, p = 0.007), CD3 + γδ+ (-0.267, p = 0.007), CD3 + CD4-CD8-γδ+ (-0.266, p = 0.003), and CD3 + CD8 + γδ + (-0.302, p = 0.002) cells. The role of NKT cells in the anti-A. simplex response was confirmed and an association between IL and 7 levels and specific antibodies, especially IgA, was demonstrated. The higher production of IL-7 would represent a compensatory mechanism in response to the reduction in lymphocyte populations associated with the response against this parasite.
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Affiliation(s)
- Carmen Cuéllar
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain.
| | - Marta Rodero
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
| | - Jaime Pérez-Griera
- Departamento de Biopatología, Hospital Clínico Universitario, 46010 Valencia, Spain
| | - Lorena Galindo-Regal
- Laboratorio de Biología Molecular, Hospital Arnau de Vilanova, 46015 Valencia, Spain
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Abdel Aziz N, Musaigwa F, Mosala P, Berkiks I, Brombacher F. Type 2 immunity: a two-edged sword in schistosomiasis immunopathology. Trends Immunol 2022; 43:657-673. [PMID: 35835714 DOI: 10.1016/j.it.2022.06.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/13/2022] [Accepted: 06/13/2022] [Indexed: 12/14/2022]
Abstract
Schistosomiasis is the second most debilitating neglected tropical disease globally after malaria, with no available therapy to control disease-driven immunopathology. Although schistosomiasis induces a markedly heterogenous immune response, type 2 immunity is the dominating immune response following oviposition. While type 2 immunity has a crucial role in granuloma formation and host survival during the acute stage of disease, its chronic activation can result in tissue scarring, fibrosis, and organ impairment. Here, we discuss recent advances in schistosomiasis, demonstrating how different immune and non-immune cells and signaling pathways are involved in the induction, maintenance, and regulation of type 2 immunity. A better understanding of these immune responses during schistosomiasis is essential to inform the potential development of candidate therapeutic strategies that fine-tune type 2 immunity to ideally modulate schistosomiasis immunopathology.
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Affiliation(s)
- Nada Abdel Aziz
- Cytokines and Diseases Group, International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Division of Immunology, Institute of Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; Biotechnology/Biomolecular Chemistry Program, Biotechnology Department, Faculty of Science, Cairo University, Cairo, Egypt; Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Diseases and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa.
| | - Fungai Musaigwa
- Cytokines and Diseases Group, International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Division of Immunology, Institute of Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Diseases and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
| | - Paballo Mosala
- Cytokines and Diseases Group, International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Division of Immunology, Institute of Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Diseases and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
| | - Inssaf Berkiks
- Cytokines and Diseases Group, International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Division of Immunology, Institute of Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Diseases and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
| | - Frank Brombacher
- Cytokines and Diseases Group, International Centre for Genetic Engineering and Biotechnology, Cape Town Component, Division of Immunology, Institute of Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa; Wellcome Centre for Infectious Diseases Research in Africa, Institute of Infectious Diseases and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa.
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9
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Grimaldi A, Pietropaolo G, Stabile H, Kosta A, Capuano C, Gismondi A, Santoni A, Sciumè G, Fionda C. The Regulatory Activity of Noncoding RNAs in ILCs. Cells 2021; 10:cells10102742. [PMID: 34685721 PMCID: PMC8534545 DOI: 10.3390/cells10102742] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/01/2021] [Accepted: 10/11/2021] [Indexed: 12/12/2022] Open
Abstract
Innate lymphoid cells (ILCs) are innate lymphocytes playing essential functions in protection against microbial infections and participate in both homeostatic and pathological contexts, including tissue remodeling, cancer, and inflammatory disorders. A number of lineage-defining transcription factors concurs to establish transcriptional networks which determine the identity and the activity of the distinct ILC subsets. However, the contribution of other regulatory molecules in controlling ILC development and function is also recently emerging. In this regard, noncoding RNAs (ncRNAs) represent key elements of the complex regulatory network of ILC biology and host protection. ncRNAs mostly lack protein-coding potential, but they are endowed with a relevant regulatory activity in immune and nonimmune cells because of their ability to control chromatin structure, RNA stability, and/or protein synthesis. Herein, we summarize recent studies describing how distinct types of ncRNAs, mainly microRNAs, long ncRNAs, and circular RNAs, act in the context of ILC biology. In particular, we comment on how ncRNAs can exert key effects in ILCs by controlling gene expression in a cell- or state-specific manner and how this tunes distinct functional outputs in ILCs.
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Affiliation(s)
- Alessio Grimaldi
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, 00161 Rome, Italy; (A.G.); (G.P.); (H.S.); (A.K.); (A.G.); (A.S.); (G.S.)
| | - Giuseppe Pietropaolo
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, 00161 Rome, Italy; (A.G.); (G.P.); (H.S.); (A.K.); (A.G.); (A.S.); (G.S.)
| | - Helena Stabile
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, 00161 Rome, Italy; (A.G.); (G.P.); (H.S.); (A.K.); (A.G.); (A.S.); (G.S.)
| | - Andrea Kosta
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, 00161 Rome, Italy; (A.G.); (G.P.); (H.S.); (A.K.); (A.G.); (A.S.); (G.S.)
| | - Cristina Capuano
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy;
| | - Angela Gismondi
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, 00161 Rome, Italy; (A.G.); (G.P.); (H.S.); (A.K.); (A.G.); (A.S.); (G.S.)
| | - Angela Santoni
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, 00161 Rome, Italy; (A.G.); (G.P.); (H.S.); (A.K.); (A.G.); (A.S.); (G.S.)
- IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico) Neuromed, 86077 Pozzilli, Italy
| | - Giuseppe Sciumè
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, 00161 Rome, Italy; (A.G.); (G.P.); (H.S.); (A.K.); (A.G.); (A.S.); (G.S.)
| | - Cinzia Fionda
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, 00161 Rome, Italy; (A.G.); (G.P.); (H.S.); (A.K.); (A.G.); (A.S.); (G.S.)
- Correspondence: ; Tel.: +39-0649255118; Fax: +39-0644340632
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