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Thompson BA, Revilla J, Brovero S, Burgess SL. A high-dimensional platform for observing neutrophil-parasite interactions. Microbiol Spectr 2024; 12:e0047224. [PMID: 38888326 PMCID: PMC11302258 DOI: 10.1128/spectrum.00472-24] [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: 02/19/2024] [Accepted: 05/08/2024] [Indexed: 06/20/2024] Open
Abstract
Diarrheal diseases with infectious etiology remain a major cause of death globally, particularly in low-income countries. Entamoeba histolytica is a pathogenic protozoan parasite that is the causative agent of amebiasis. Amebiasis has a wide presentation in clinical severity with many factors, including the bacterial microbiota, contributing to this variation. The innate immune response also plays a critical role in regulating the severity of E. histolytica infection, with neutrophils reported to have a protective role. Despite this, the precise mechanism of how neutrophils mediate amebic killing is poorly understood. Thus, modern platforms that allow for inquiry of granulocyte-ameba interactions will increase our understanding of this disease. Herein, we describe an assay for neutrophil killing of E. histolytica by utilizing high-dimensional spectral flow cytometry. Neutrophils were isolated from wild-type 5-week-old C57BL/6 mice and co-cultured with E. histolytica at various multiplicity of infections (MOIs). After co-culture, neutrophils and E. histolytica were stained for spectral flow cytometry. Cell populations were identified using surface markers and fluorescence minus one (FMO) controls. We have previously shown that animals colonized with a component of the human microbiota, Clostridium scindens, were protected from E. histolytica. This protection was associated with elevated neutrophil count. Here, we explored amebic killing capacity and observed that neutrophils from animals with C. scindens possessed heightened amebic killing compared with controls. Thus, this study establishes a novel platform that can provide an in-depth analysis of granulocyte-parasite interactions in various contexts, including during alteration of the intestinal microbiota.IMPORTANCEThe tools for studying host immune cell-E. histolytica interactions are limited. Factors, such as parasite heterogeneity, infectivity, and difficulties with culture systems and animal models, make interrogation of these interactions challenging. Thus, Entamoeba researchers can benefit from next-generation models that allow for the analysis of both host and parasite cells. Here, we demonstrate the use of a novel platform that allows for the determination of parasite-host cell interactions and customizable high-dimensional phenotyping of both populations. Indeed, spectral flow cytometry can approach >40 markers on a single panel and can be paired with custom-developed parasite antibodies that can be conjugated to fluorochromes via commercially available kits. This platform affords researchers the capability to test highly precise hypotheses regarding host-parasite interactions.
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Affiliation(s)
- Brandon A. Thompson
- Division of Infectious Diseases and International Health, Department of Internal Medicine, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Julio Revilla
- Division of Infectious Diseases and International Health, Department of Internal Medicine, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Savannah Brovero
- Division of Infectious Diseases and International Health, Department of Internal Medicine, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Stacey L. Burgess
- Division of Infectious Diseases and International Health, Department of Internal Medicine, University of Virginia School of Medicine, Charlottesville, Virginia, USA
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2
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Wu Q, Mao H, Jiang Z, Tang D. Tumour-associated neutrophils: Potential therapeutic targets in pancreatic cancer immunotherapy. Immunology 2024; 172:343-361. [PMID: 38402904 DOI: 10.1111/imm.13765] [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: 11/08/2023] [Accepted: 01/31/2024] [Indexed: 02/27/2024] Open
Abstract
Pancreatic cancer (PC) is a highly malignant tumour of the digestive system with poor therapeutic response and low survival rates. Immunotherapy has rapidly developed in recent years and has achieved significant outcomes in numerous malignant neoplasms. However, responses to immunotherapy in PC are rare, and the immunosuppressive and desmoplastic tumour microenvironment (TME) significantly hinders their efficacy in PC. Tumour-associated neutrophils (TANs) play a crucial role in the PC microenvironment and exert a profound influence on PC immunotherapy by establishing a robust stromal shelter and restraining immune cells to assist PC cells in immune escape, which may subvert the current status of PC immunotherapy. The present review aims to offer a comprehensive summary of the latest progress in understanding the involvement of TANs in PC desmoplastic and immunosuppressive functions and to emphasise the potential therapeutic implications of focusing on TANs in the immunotherapy of this deleterious disease. Finally, we provide an outlook for the future use of TANs in PC immunotherapy.
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Affiliation(s)
- Qihang Wu
- Clinical Medical College, Yangzhou University, Yangzhou, China
| | - Han Mao
- Clinical Medical College, Yangzhou University, Yangzhou, China
| | - Zhengting Jiang
- Clinical Medical College, Yangzhou University, Yangzhou, China
| | - Dong Tang
- Department of General Surgery, Institute of General Surgery, Clinical Medical College, Yangzhou University, Northern Jiangsu People's Hospital, Yangzhou, China
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3
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Estrada R, Romero Y, Figueroa D, Coila P, Hañari-Quispe RD, Aliaga M, Galindo W, Alvarado W, Casanova D, Quilcate C. Effects of Age in Fecal Microbiota and Correlations with Blood Parameters in Genetic Nucleus of Cattle. Microorganisms 2024; 12:1331. [PMID: 39065099 PMCID: PMC11279168 DOI: 10.3390/microorganisms12071331] [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: 05/28/2024] [Revised: 06/25/2024] [Accepted: 06/26/2024] [Indexed: 07/28/2024] Open
Abstract
This study aimed to determine the impact of age on the fecal microbiota in the genetic nucleus of cattle, with a focus on microbial richness, composition, functional diversity, and correlations with blood parameters. Fecal and blood samples from 21 cattle were analyzed using 16S rRNA gene sequencing. Older cattle exhibited greater bacterial diversity and abundance, with significant changes in alpha diversity indices (p < 0.05). Beta diversity analysis revealed significant variations in microbial composition between age groups and the interaction of age and sex (p < 0.05). Correlations between alpha diversity, community composition, and hematological values highlighted the influence of microbiota on bovine health. Beneficial butyrate-producing bacteria, such as Ruminococcaceae, were more abundant in older cattle, suggesting a role in gut health. Functional diversity analysis indicated that younger cattle had significantly more abundant metabolic pathways in fermentation and anaerobic chemoheterotrophy. These findings suggest management strategies including tailored probiotic therapies, dietary adjustments, and targeted health monitoring to enhance livestock health and performance. Further research should include comprehensive metabolic analyses to better correlate microbiota changes with age-related variations, enhancing understanding of the complex interactions between microbiota, age, and reproductive status.
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Affiliation(s)
- Richard Estrada
- Dirección de Desarrollo Tecnológico Agrario, Instituto Nacional de Innovación Agraria (INIA), Lima 15024, Peru; (Y.R.); (D.F.); (D.C.)
| | - Yolanda Romero
- Dirección de Desarrollo Tecnológico Agrario, Instituto Nacional de Innovación Agraria (INIA), Lima 15024, Peru; (Y.R.); (D.F.); (D.C.)
| | - Deyanira Figueroa
- Dirección de Desarrollo Tecnológico Agrario, Instituto Nacional de Innovación Agraria (INIA), Lima 15024, Peru; (Y.R.); (D.F.); (D.C.)
| | - Pedro Coila
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional del Altiplano, Puno 21001, Peru; (P.C.); (R.D.H.-Q.); (M.A.); (W.G.)
| | - Renán Dilton Hañari-Quispe
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional del Altiplano, Puno 21001, Peru; (P.C.); (R.D.H.-Q.); (M.A.); (W.G.)
| | - Mery Aliaga
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional del Altiplano, Puno 21001, Peru; (P.C.); (R.D.H.-Q.); (M.A.); (W.G.)
| | - Walter Galindo
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional del Altiplano, Puno 21001, Peru; (P.C.); (R.D.H.-Q.); (M.A.); (W.G.)
| | - Wigoberto Alvarado
- Facultad de Ingeniería Zootecnista, Agronegocios y Biotecnología, Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas (UNTRM), Chachapoyas 01001, Peru;
| | - David Casanova
- Dirección de Desarrollo Tecnológico Agrario, Instituto Nacional de Innovación Agraria (INIA), Lima 15024, Peru; (Y.R.); (D.F.); (D.C.)
| | - Carlos Quilcate
- Dirección de Desarrollo Tecnológico Agrario, Instituto Nacional de Innovación Agraria (INIA), Lima 15024, Peru; (Y.R.); (D.F.); (D.C.)
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Bezemer GFG, Diks MAP, Mortaz E, van Ark I, van Bergenhenegouwen J, Kraneveld AD, Folkerts G, Garssen J. A synbiotic mixture of Bifidobacterium breve M16-V, oligosaccharides and pectin, enhances Short Chain Fatty Acid production and improves lung health in a preclinical model for pulmonary neutrophilia. Front Nutr 2024; 11:1371064. [PMID: 39006103 PMCID: PMC11239554 DOI: 10.3389/fnut.2024.1371064] [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: 01/15/2024] [Accepted: 05/15/2024] [Indexed: 07/16/2024] Open
Abstract
Introduction Pulmonary neutrophilia is a hallmark of numerous airway diseases including Chronic Obstructive Pulmonary Disease (COPD), Neutrophilic asthma, Acute Lung Injury (ALI), Acute Respiratory Distress Syndrome (ARDS) and COVID-19. The aim of the current study was to investigate the effect of dietary interventions on lung health in context of pulmonary neutrophilia. Methods Male BALB/cByJ mice received 7 intra-nasal doses of either a vehicle or lipopolysaccharides (LPS). To study the effect of nutritional interventions they received 16 intra-gastric doses of either a vehicle (PBS) or the following supplements (1) probiotic Bifidobacterium breve (B. breve) M16-V; (2) a prebiotic fiber mixture of short-chain galacto-oligosaccharides, long-chain fructo-oligosaccharides, and low-viscosity pectin in a 9:1:2 ratio (scGOS/lcFOS/lvPectin); and (3) A synbiotic combination B. breve M16-V and scGOS/lcFOS/lvPectin. Parameters for lung health included lung function, lung morphology and lung inflammation. Parameters for systemic immunomodulation included levels of fecal short chain fatty acids and regulatory T cells. Results The synbiotic supplement protected against the LPS induced decline in lung function (35% improved lung resistance at baseline p = 0.0002 and 25% at peak challenge, p = 0.0002), provided a significant relief from pulmonary neutrophilia (40.7% less neutrophils, p < 0.01) and improved the pulmonary neutrophil-to-lymphocyte ratio (NLR) by 55.3% (p = 0.0033). Supplements did not impact lung morphology in this specific experiment. LPS applied to the upper airways induced less fecal SCFAs production compared to mice that received PBS. The production of acetic acid between day -5 and day 16 was increased in all unchallenged mice (PBS-PBS p = 0.0003; PBS-Pro p < 0.0001; PBS-Pre, p = 0.0045; PBS-Syn, p = 0.0005) which upon LPS challenge was only observed in mice that received the synbiotic mixture of B. breve M16-V and GOS:FOS:lvPectin (p = 0.0003). A moderate correlation was found for butyric acid and lung function parameters and a weak correlation was found between acetic acid, butyric acid and propionic acid concentrations and NLR. Conclusion This study suggests bidirectional gut lung cross-talk in a mouse model for pulmonary neutrophilia. Neutrophilic lung inflammation coexisted with attenuated levels of fecal SCFA. The beneficial effects of the synbiotic mixture of B. breve M16-V and GOS:FOS:lvPectin on lung health associated with enhanced levels of SCFAs.
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Affiliation(s)
- Gillina F G Bezemer
- Division of Pharmacology, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands
- Impact Station, Hilversum, Netherlands
| | - Mara A P Diks
- Division of Pharmacology, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Esmaeil Mortaz
- Department of Microbiology & Immunology, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Respiratory Immunology Research Center, NRITLD, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ingrid van Ark
- Division of Pharmacology, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Jeroen van Bergenhenegouwen
- Division of Pharmacology, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands
- Danone, Nutricia Research BV, Immunology, Utrecht, Netherlands
| | - Aletta D Kraneveld
- Division of Pharmacology, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Gert Folkerts
- Division of Pharmacology, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Johan Garssen
- Division of Pharmacology, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht, Netherlands
- Danone, Nutricia Research BV, Immunology, Utrecht, Netherlands
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Danne C. Neutrophils: Old cells in IBD, new actors in interactions with the gut microbiota. Clin Transl Med 2024; 14:e1739. [PMID: 38877640 PMCID: PMC11178512 DOI: 10.1002/ctm2.1739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Accepted: 06/02/2024] [Indexed: 06/16/2024] Open
Affiliation(s)
- Camille Danne
- Sorbonne Université, INSERM UMRS-938, Centre de Recherche Saint-Antoine, CRSA, AP-HP, Hôpital Saint-Antoine, Service de Gastroentérologie, Paris, France
- Paris Center For Microbiome Medicine (PaCeMM) FHU, Paris, France
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Wang J, He M, Yang M, Ai X. Gut microbiota as a key regulator of intestinal mucosal immunity. Life Sci 2024; 345:122612. [PMID: 38588949 DOI: 10.1016/j.lfs.2024.122612] [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: 02/04/2024] [Revised: 03/14/2024] [Accepted: 04/02/2024] [Indexed: 04/10/2024]
Abstract
Gut microbiota is a complex microbial community with the ability of maintaining intestinal health. Intestinal homeostasis largely depends on the mucosal immune system to defense external pathogens and promote tissue repair. In recent years, growing evidence revealed the importance of gut microbiota in shaping intestinal mucosal immunity. Therefore, according to the existing findings, this review first provided an overview of intestinal mucosal immune system before summarizing the regulatory roles of gut microbiota in intestinal innate and adaptive immunity. Specifically, this review delved into the gut microbial interactions with the cells such as intestinal epithelial cells (IECs), macrophages, dendritic cells (DCs), neutrophils, and innate lymphoid cells (ILCs) in innate immunity, and T and B lymphocytes in adaptive immunity. Furthermore, this review discussed the main effects of gut microbiota dysbiosis in intestinal diseases and offered future research prospects. The review highlighted the key regulatory roles of gut microbiota in intestinal mucosal immunity via various host-microbe interactions, providing valuable references for the development of microbial therapy in intestinal diseases.
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Affiliation(s)
- Jing Wang
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China; Department of Pharmacy, North Sichuan Medical College, Nanchong 637000, China
| | - Mei He
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China; Department of Pharmacy, North Sichuan Medical College, Nanchong 637000, China
| | - Ming Yang
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China; Department of Pharmacy, North Sichuan Medical College, Nanchong 637000, China.
| | - Xiaopeng Ai
- Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China; Department of Pharmacy, North Sichuan Medical College, Nanchong 637000, China.
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Pérez-Pérez ME, Nieto-Torres E, Bollain-y-Goytia JJ, Delgadillo-Ruíz L. Protein Citrullination by Peptidyl Arginine Deiminase/Arginine Deiminase Homologs in Members of the Human Microbiota and Its Recognition by Anti-Citrullinated Protein Antibodies. Int J Mol Sci 2024; 25:5192. [PMID: 38791230 PMCID: PMC11121387 DOI: 10.3390/ijms25105192] [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: 03/13/2024] [Revised: 05/01/2024] [Accepted: 05/04/2024] [Indexed: 05/26/2024] Open
Abstract
The human microbiome exists throughout the body, and it is essential for maintaining various physiological processes, including immunity, and dysbiotic events, which are associated with autoimmunity. Peptidylarginine deiminase (PAD) enzymes can citrullinate self-proteins related to rheumatoid arthritis (RA) that induce the production of anti-citrullinated protein antibodies (ACPAs) and lead to inflammation and joint damage. The present investigation was carried out to demonstrate the expression of homologs of PADs or arginine deiminases (ADs) and citrullinated proteins in members of the human microbiota. To achieve the objective, we used 17 microbial strains and specific polyclonal antibodies (pAbs) of the synthetic peptide derived from residues 100-200 of human PAD2 (anti-PAD2 pAb), and the recombinant fragment of amino acids 326 and 611 of human PAD4 (anti-PAD4 pAb), a human anti-citrulline pAb, and affinity ACPAs of an RA patient. Western blot (WB), enzyme-linked immunosorbent assay (ELISA), elution, and a test with Griess reagent were used. This is a cross-sectional case-control study on patients diagnosed with RA and control subjects. Inferential statistics were applied using the non-parametric Kruskal-Wallis test and Mann-Whitney U test generated in the SPSS program. Some members of phyla Firmicutes and Proteobacteria harbor homologs of PADs/ADs and citrullinated antigens that are reactive to the ACPAs of RA patients. Microbial citrullinome and homolog enzymes of PADs/ADs are extensive in the human microbiome and are involved in the production of ACPAs. Our findings suggest a molecular link between microorganisms of a dysbiotic microbiota and RA pathogenesis.
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Affiliation(s)
- María-Elena Pérez-Pérez
- PhD in Basic Science with Biological Orientation, Academic Unit of Biological Sciences, Universidad Autónoma de Zacatecas, Zacatecas 98066, Mexico; (M.-E.P.-P.); (L.D.-R.)
- Department of Immunology and Molecular Biology, Academic Unit of Biological Sciences, Universidad Autónoma de Zacatecas, Guadalupe, Zacatecas 98615, Mexico
| | - Enrique Nieto-Torres
- Academic Unit of Human Medicine and Health Sciences, Universidad Autónoma de Zacatecas, Zacatecas 98160, Mexico;
| | - Juan-José Bollain-y-Goytia
- PhD in Basic Science with Biological Orientation, Academic Unit of Biological Sciences, Universidad Autónoma de Zacatecas, Zacatecas 98066, Mexico; (M.-E.P.-P.); (L.D.-R.)
- Department of Immunology and Molecular Biology, Academic Unit of Biological Sciences, Universidad Autónoma de Zacatecas, Guadalupe, Zacatecas 98615, Mexico
| | - Lucía Delgadillo-Ruíz
- PhD in Basic Science with Biological Orientation, Academic Unit of Biological Sciences, Universidad Autónoma de Zacatecas, Zacatecas 98066, Mexico; (M.-E.P.-P.); (L.D.-R.)
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Tan DSY, Akelew Y, Snelson M, Nguyen J, O’Sullivan KM. Unravelling the Link between the Gut Microbiome and Autoimmune Kidney Diseases: A Potential New Therapeutic Approach. Int J Mol Sci 2024; 25:4817. [PMID: 38732038 PMCID: PMC11084259 DOI: 10.3390/ijms25094817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/13/2024] [Accepted: 04/18/2024] [Indexed: 05/13/2024] Open
Abstract
The gut microbiota and short chain fatty acids (SCFA) have been associated with immune regulation and autoimmune diseases. Autoimmune kidney diseases arise from a loss of tolerance to antigens, often with unclear triggers. In this review, we explore the role of the gut microbiome and how disease, diet, and therapy can alter the gut microbiota consortium. Perturbations in the gut microbiota may systemically induce the translocation of microbiota-derived inflammatory molecules such as liposaccharide (LPS) and other toxins by penetrating the gut epithelial barrier. Once in the blood stream, these pro-inflammatory mediators activate immune cells, which release pro-inflammatory molecules, many of which are antigens in autoimmune diseases. The ratio of gut bacteria Bacteroidetes/Firmicutes is associated with worse outcomes in multiple autoimmune kidney diseases including lupus nephritis, MPO-ANCA vasculitis, and Goodpasture's syndrome. Therapies that enhance SCFA-producing bacteria in the gut have powerful therapeutic potential. Dietary fiber is fermented by gut bacteria which in turn release SCFAs that protect the gut barrier, as well as modulating immune responses towards a tolerogenic anti-inflammatory state. Herein, we describe where the current field of research is and the strategies to harness the gut microbiome as potential therapy.
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Affiliation(s)
- Diana Shu Yee Tan
- Department of Medicine, Centre for Inflammatory Diseases, Monash University, Clayton, VIC 3168, Australia; (D.S.Y.T.); (Y.A.)
| | - Yibeltal Akelew
- Department of Medicine, Centre for Inflammatory Diseases, Monash University, Clayton, VIC 3168, Australia; (D.S.Y.T.); (Y.A.)
| | - Matthew Snelson
- School of Biological Science, Monash University, Clayton, VIC 3168, Australia;
| | - Jenny Nguyen
- The Alfred Centre, School of Translational Medicine, Monash University, Melbourne, VIC 3004, Australia
| | - Kim Maree O’Sullivan
- Department of Medicine, Centre for Inflammatory Diseases, Monash University, Clayton, VIC 3168, Australia; (D.S.Y.T.); (Y.A.)
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Wang M, Jin Z, Huang H, Cheng X, Zhang Q, Tang Y, Zhu X, Zong Z, Li H, Ning Z. Neutrophil hitchhiking: Riding the drug delivery wave to treat diseases. Drug Dev Res 2024; 85:e22169. [PMID: 38477422 DOI: 10.1002/ddr.22169] [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: 10/08/2023] [Revised: 02/06/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024]
Abstract
Neutrophils are a crucial component of the innate immune system and play a pivotal role in various physiological processes. From a physical perspective, hitchhiking is considered a phenomenon of efficient transportation. The combination of neutrophils and hitchhikers has given rise to effective delivery systems both in vivo and in vitro, thus neutrophils hitchhiking become a novel approach to disease treatment. This article provides an overview of the innovative and feasible application of neutrophils as drug carriers. It explores the mechanisms underlying neutrophil function, elucidates the mechanism of drug delivery mediated by neutrophil-hitchhiking, and discusses the potential applications of this strategy in the treatment of cancer, immune diseases, inflammatory diseases, and other medical conditions.
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Affiliation(s)
- Menghui Wang
- Department of Day Ward, The First Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, China
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang University, Nanchang, Jiangxi Province, China
- HuanKui Academy, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, China
| | - Zhenhua Jin
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, China
| | - Haoyu Huang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, China
| | - Xifu Cheng
- Department of Day Ward, The First Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, China
| | - Qin Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, China
| | - Ying Tang
- Department of Day Ward, The First Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, China
| | - Xiaoping Zhu
- Department of Day Ward, The First Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, China
| | - Zhen Zong
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, China
| | - Hui Li
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang University, Nanchang, Jiangxi Province, China
| | - Zhikun Ning
- Department of Day Ward, The First Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, China
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10
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Zheng J, Rong L, Lu Y, Chen J, Hua K, Du Y, Zhang Q, Li W. Trap & kill: a neutrophil-extracellular-trap mimic nanoparticle for anti-bacterial therapy. Biomater Sci 2024; 12:1841-1846. [PMID: 38410093 DOI: 10.1039/d4bm00145a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Fenton chemistry-mediated antimicrobials have demonstrated great promise in antibacterial therapy. However, the short life span and diffusion distance of hydroxyl radicals dampen the therapeutic efficiency of these antimicrobials. Herein, inspired by the neutrophil extracellular trap (NET), in which bacteria are trapped and agglutinated via electronic interactions and killed by reactive oxygen species, we fabricated a NET-mimic nanoparticle to suppress bacterial infection in a "trap & kill" manner. Specifically, this NET-mimic nanoparticle was synthesized via polymerization of ferrocene monomers followed by quaternization with a mannose derivative. Similar to the NET, the NET-mimic nanoparticles trap bacteria through electronic and sugar-lectin interactions between their mannose moieties and the lectins of bacteria, forming bacterial agglutinations. Therefore, they confine the spread of the bacteria and restrict the bacterial cells to the destruction range of hydroxyl radicals. Meanwhile, the ferrocene component of the nanoparticle catalyzes the production of highly toxic hydroxyl radicals at the H2O2 rich infection foci and effectively eradicates the agglutinated bacteria. In a mouse model of an antimicrobial-resistant bacteria-infected wound, the NET-mimic nanoparticles displayed potent antibacterial activity and accelerated wound healing.
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Affiliation(s)
- Jingtao Zheng
- Center for Molecular Metabolism, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing, 210094, China.
| | - Lei Rong
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Yao Lu
- Center for Molecular Metabolism, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing, 210094, China.
| | - Jing Chen
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
| | - Kai Hua
- Center for Molecular Metabolism, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing, 210094, China.
| | - Yongzhong Du
- National Key Laboratory of Advanced Drug Delivery and Release Systems, Shandong Luye Pharmaceutical Co., Ltd, Yantai, Shandong 264003, PR China
| | - Qiang Zhang
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
| | - Weishuo Li
- Center for Molecular Metabolism, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing, 210094, China.
- National Key Laboratory of Advanced Drug Delivery and Release Systems, Shandong Luye Pharmaceutical Co., Ltd, Yantai, Shandong 264003, PR China
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Liu Q, Yang Y, Pan M, Yang F, Yu Y, Qian Z. Role of the gut microbiota in tumorigenesis and treatment. Theranostics 2024; 14:2304-2328. [PMID: 38646653 PMCID: PMC11024857 DOI: 10.7150/thno.91700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 03/01/2024] [Indexed: 04/23/2024] Open
Abstract
The gut microbiota is a crucial component of the intricate microecosystem within the human body that engages in interactions with the host and influences various physiological processes and pathological conditions. In recent years, the association between dysbiosis of the gut microbiota and tumorigenesis has garnered increasing attention, as it is recognized as a hallmark of cancer within the scientific community. However, only a few microorganisms have been identified as potential drivers of tumorigenesis, and enhancing the molecular understanding of this process has substantial scientific importance and clinical relevance for cancer treatment. In this review, we delineate the impact of the gut microbiota on tumorigenesis and treatment in multiple types of cancer while also analyzing the associated molecular mechanisms. Moreover, we discuss the utility of gut microbiota data in cancer diagnosis and patient stratification. We further outline current research on harnessing microorganisms for cancer treatment while also analyzing the prospects and challenges associated with this approach.
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Affiliation(s)
- Qingya Liu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yun Yang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Meng Pan
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Fan Yang
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yan Yu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhiyong Qian
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
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12
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Danne C, Skerniskyte J, Marteyn B, Sokol H. Neutrophils: from IBD to the gut microbiota. Nat Rev Gastroenterol Hepatol 2024; 21:184-197. [PMID: 38110547 DOI: 10.1038/s41575-023-00871-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/10/2023] [Indexed: 12/20/2023]
Abstract
Inflammatory bowel disease (IBD) is a chronic inflammatory condition of the gastrointestinal tract that results from dysfunction in innate and/or adaptive immune responses. Impaired innate immunity, which leads to lack of control of an altered intestinal microbiota and to activation of the adaptive immune system, promotes a secondary inflammatory response that is responsible for tissue damage. Neutrophils are key players in innate immunity in IBD, but their roles have been neglected compared with those of other immune cells. The latest studies on neutrophils in IBD have revealed unexpected complexities, with heterogeneous populations and dual functions, both deleterious and protective, for the host. In parallel, interconnections between disease development, intestinal microbiota and neutrophils have been highlighted. Numerous IBD susceptibility genes (such as NOD2, NCF4, LRRK2, CARD9) are involved in neutrophil functions related to defence against microorganisms. Moreover, severe monogenic diseases involving dysfunctional neutrophils, including chronic granulomatous disease, are characterized by intestinal inflammation that mimics IBD and by alterations in the intestinal microbiota. This observation demonstrates the dialogue between neutrophils, gut inflammation and the microbiota. Neutrophils affect microbiota composition and function in several ways. In return, microbial factors, including metabolites, regulate neutrophil production and function directly and indirectly. It is crucial to further investigate the diverse roles played by neutrophils in host-microbiota interactions, both at steady state and in inflammatory conditions, to develop new IBD therapies. In this Review, we discuss the roles of neutrophils in IBD, in light of emerging evidence proving strong interconnections between neutrophils and the gut microbiota, especially in an inflammatory context.
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Affiliation(s)
- Camille Danne
- Sorbonne Université, INSERM UMRS-938, Centre de Recherche Saint-Antoine, CRSA, AP-HP, Hôpital Saint-Antoine, Service de Gastroentérologie, Paris, France.
- Paris Center For Microbiome Medicine (PaCeMM) FHU, Paris, France.
| | - Jurate Skerniskyte
- CNRS, UPR 9002, Université de Strasbourg, Institut de Biologie Moléculaire et Cellulaire, Architecture et Réactivité de l'ARN, Strasbourg, France
- Institute of Biosciences, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Benoit Marteyn
- CNRS, UPR 9002, Université de Strasbourg, Institut de Biologie Moléculaire et Cellulaire, Architecture et Réactivité de l'ARN, Strasbourg, France
- University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg, France
- Institut Pasteur, Université de Paris, Inserm 1225 Unité de Pathogenèse des Infections Vasculaires, Paris, France
| | - Harry Sokol
- Sorbonne Université, INSERM UMRS-938, Centre de Recherche Saint-Antoine, CRSA, AP-HP, Hôpital Saint-Antoine, Service de Gastroentérologie, Paris, France
- Paris Center For Microbiome Medicine (PaCeMM) FHU, Paris, France
- Université Paris-Saclay, INRAe, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
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13
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Kawabata S, Takagaki M, Nakamura H, Nishida T, Terada E, Kadono Y, Izutsu N, Takenaka T, Matsui Y, Yamada S, Fukuda T, Nakagawa R, Kishima H. Association of Gut Microbiome with Early Brain Injury After Subarachnoid Hemorrhage: an Experimental Study. Transl Stroke Res 2024; 15:87-100. [PMID: 36484924 DOI: 10.1007/s12975-022-01112-6] [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: 06/29/2022] [Revised: 11/05/2022] [Accepted: 11/30/2022] [Indexed: 12/14/2022]
Abstract
The occurrence of early brain injury (EBI) following subarachnoid hemorrhage (SAH) is crucial in the prognosis of SAH; however, no effective treatment for EBI has been developed. Gut microbiome (GM) composition influences the outcome of various diseases, including ischemic stroke. Here, we evaluated whether prior GM alteration could prevent EBI following SAH. We altered the GM of 7-week-old male rats by administering antibiotic-containing water for 2 weeks and performing fecal microbiome transplantation after antibiotic induction. Composition of the GM was profiled using 16S rRNA. We induced SAH by injecting blood in the subarachnoid space of control rats and rats with altered GM. We evaluated EBI indicators such as neurological score, brain water content, Evans blue extravasation, and neuronal injury. Additionally, we studied inflammatory cells using immunohistochemistry, immunocytochemistry, quantitative PCR, and flow cytometry. EBI was significantly averted by alterations in GM using antibiotics. The altered GM significantly prevented neutrophil infiltration into the brain among inflammatory cells, and this anti-inflammatory effect was observed immediately following SAH onset. The altered GM also prevented neutrophil extracellular trap formation in the brain and blood, indicating the systemic protective effect. The cause of the protective effect was attributed to a significant decrease in aged neutrophils (CXCR4high CD62Llow) by the altered GM. These protective effects against EBI disappeared when the altered GM was recolonized with normal flora. Our findings demonstrated that EBI following SAH is associated with GM, which regulated neutrophil infiltration.
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Affiliation(s)
- Shuhei Kawabata
- Department of Neurosurgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Masatoshi Takagaki
- Department of Neurosurgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Hajime Nakamura
- Department of Neurosurgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Takeo Nishida
- Department of Neurosurgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Eisaku Terada
- Department of Neurosurgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshinori Kadono
- Department of Neurosurgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Nobuyuki Izutsu
- Department of Neurosurgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Tomofumi Takenaka
- Department of Neurosurgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yuichi Matsui
- Department of Neurosurgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Shuhei Yamada
- Department of Neurosurgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Tatsumaru Fukuda
- Department of Neurosurgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Ryota Nakagawa
- Department of Neurosurgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Haruhiko Kishima
- Department of Neurosurgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
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14
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Delgadinho M, Veiga L, Ginete C, Santos B, Miranda A, de Vasconcelos JN, Brito M. Differential expression of adhesion molecules in sickle cell anemia and gut microbiome effect. Ann Hematol 2024; 103:409-419. [PMID: 38153527 PMCID: PMC10799142 DOI: 10.1007/s00277-023-05589-5] [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: 10/04/2023] [Accepted: 12/12/2023] [Indexed: 12/29/2023]
Abstract
Sickle cell anemia (SCA) causes a long-standing vascular inflammation state, leading to endothelial dysfunction and chronic overexpression of several adhesion molecules, which contributes to acute and constant vaso-occlusive (VOC) episodes. It has been demonstrated that hydroxyurea (HU) can reduce VOC events, organ damage, blood transfusions, and even the adhesion properties to endothelial cells of SCA subjects. Due to VOC episodes, these patients are also more susceptible to recurrent bacterial translocation and dysbiosis. Given this, our study aimed to uncover the interplay between adhesion molecules, gut microbiome, and hydroxyurea in a population of Angolan SCA children. Serum and fecal samples were obtained before and after HU treatment in 35 children. After HU, four of these adhesion molecules were significantly reduced: sE-selectin (p = 0.002), ADAMTS13 (p = 0.023), sICAM-1 (p = 0.003), and sVCAM-1 (p = 0.018). A positive correlation was observed between the number of neutrophils and sICAM-1, platelets, and sP-selectin, and also between leukocytes, sICAM-1, and sVCAM-1. Most taxa showing a significant correlation mainly belonged to the Clostridiales order. Specifically, from the Clostridium genera, the groups g19, g21, and g34 were all negatively correlated with HbF levels; g19, g21, and g24 positively correlated with leukocytes; g19 positively with neutrophils and sVCAM-1; and g34 positively with E- and P-selectin. Serratia, an opportunistic pathogen, was positively correlated with sE-selectin and sICAM-1 levels. Additionally, a negative correlation was observed between sP-selectin and Bifidobacterium. Research studies in this area could improve our understanding and contribute to finding new prognostic biomarkers to guarantee precise SCA patient stratification and predict severe complications.
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Affiliation(s)
- Mariana Delgadinho
- H&TRC - Health & Technology Research Center, ESTeSL - Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Lisbon, Portugal
| | - Luísa Veiga
- H&TRC - Health & Technology Research Center, ESTeSL - Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Lisbon, Portugal
| | - Catarina Ginete
- H&TRC - Health & Technology Research Center, ESTeSL - Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Lisbon, Portugal
| | - Brígida Santos
- Centro de Investigação em Saúde de Angola (CISA), Caxito, Bengo, Angola
- Hospital Pediátrico David Bernardino (HPDB), Luanda, Angola
| | - Armandina Miranda
- Instituto Nacional de Saúde Doutor Ricardo Jorge (INSA), Lisbon, Portugal
| | | | - Miguel Brito
- H&TRC - Health & Technology Research Center, ESTeSL - Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Lisbon, Portugal.
- Centro de Investigação em Saúde de Angola (CISA), Caxito, Bengo, Angola.
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15
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Abstract
The remarkable diversity of lymphocytes, essential components of the immune system, serves as an ingenious mechanism for maximizing the efficient utilization of limited host defense resources. While cell adhesion molecules, notably in gut-tropic T cells, play a central role in this mechanism, the counterbalancing molecular details have remained elusive. Conversely, we've uncovered the molecular pathways enabling extracellular vesicles secreted by lymphocytes to reach the gut's mucosal tissues, facilitating immunological regulation. This discovery sheds light on immune fine-tuning, offering insights into immune regulation mechanisms.
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Affiliation(s)
- Yasunari Matsuzaka
- Division of Molecular and Medical Genetics, Center for Gene and Cell Therapy, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
- Administrative Section of Radiation Protection, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Ryu Yashiro
- Administrative Section of Radiation Protection, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Higashimurayama, Tokyo, Japan
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16
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de la Cuesta-Zuluaga J, Huus KE, Youngblut ND, Escobar JS, Ley RE. Obesity is the main driver of altered gut microbiome functions in the metabolically unhealthy. Gut Microbes 2023; 15:2246634. [PMID: 37680093 PMCID: PMC10486298 DOI: 10.1080/19490976.2023.2246634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 08/03/2023] [Accepted: 08/07/2023] [Indexed: 09/09/2023] Open
Abstract
Obesity (OB) and cardiometabolic disease are major public health issues linked to changes in the gut microbiome. OB and poor cardiometabolic health status (CHS) are often comorbid, which hinders efforts to identify components of the microbiome uniquely linked to either one. Here, we used a deeply phenotyped cohort of 408 adults from Colombia, including subjects with OB, unhealthy CHS, or both, to validate previously reported features of gut microbiome function and diversity independently correlated with OB or CHS using fecal metagenomes. OB was defined by body mass index, waist circumference, and body fat; CHS as healthy or unhealthy according to blood biochemistry and anthropometric data. We found that OB, more so than metabolic status, drove associations with gut microbiome structure and functions. The microbiome of obese individuals with and without co-existing unhealthy CHS was characterized by reduced metagenomic diversity, reduced fermentative potential and elevated capacity to respond to oxidative stress and produce bacterial antigens. Disease-linked features were correlated with increased host blood pressure and inflammatory markers, and were mainly contributed by members of the family Enterobacteriaceae. Our results link OB with a microbiome able to tolerate an inflammatory and oxygenated gut state, and suggest that OB is the main driver of microbiome functional differences when poor CHS is a comorbidity.
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Affiliation(s)
| | - Kelsey E. Huus
- Department of Microbiome Science, Max Planck Institute for Biology Tübingen, Tübingen, Germany
| | - Nicholas D. Youngblut
- Department of Microbiome Science, Max Planck Institute for Biology Tübingen, Tübingen, Germany
| | - Juan S. Escobar
- Vidarium–Nutrition, Health and Wellness Research Center, Grupo Empresarial Nutresa, Medellin, Colombia
| | - Ruth E. Ley
- Department of Microbiome Science, Max Planck Institute for Biology Tübingen, Tübingen, Germany
- Cluster of Excellence EXC 2124 Controlling Microbes to Fight Infections, University of Tübingen, Tübingen, Germany
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17
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Sim BZ, Slavin MA, Douglas AP. Risky business: The impact of antimicrobial prescribing on multidrug-resistant Gram-negative BSIs in acute myeloid leukemia patients. Transpl Infect Dis 2023; 25:e14102. [PMID: 37436795 DOI: 10.1111/tid.14102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 07/13/2023]
Affiliation(s)
- Beatrice Z Sim
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
| | - Monica A Slavin
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
- Department of Infectious Diseases, Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Abby P Douglas
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
- Department of Infectious Diseases, Austin Health, Melbourne, Victoria, Australia
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18
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Balazs I, Stadlbauer V. Circulating neutrophil anti-pathogen dysfunction in cirrhosis. JHEP Rep 2023; 5:100871. [PMID: 37822786 PMCID: PMC10562928 DOI: 10.1016/j.jhepr.2023.100871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 07/16/2023] [Accepted: 07/22/2023] [Indexed: 10/13/2023] Open
Abstract
Neutrophils are the largest population of leucocytes and are among the first cells of the innate immune system to fight against intruding pathogens. In patients with cirrhosis, neutrophils exhibit altered functionality, including changes in phagocytic ability, bacterial killing, chemotaxis, degranulation, reactive oxygen species production and NET (neutrophil extracellular trap) formation. This results in their inability to mount an adequate antibacterial response and protect the individual from infection. Prognosis and survival in patients with cirrhosis are greatly influenced by the development of infectious complications. Multidrug-resistant bacterial infections in patients with cirrhosis are currently a growing problem worldwide; therefore, alternative methods for the prevention and treatment of bacterial infections in cirrhosis are urgently needed. The prevention and treatment of neutrophil dysfunction could be a potential way to protect patients from bacterial infections. However, the reasons for changes in neutrophil function in cirrhosis are still not completely understood, which limits the development of efficient therapeutic strategies. Both cellular and serum factors have been proposed to contribute to the functional impairment of neutrophils. Herein, we review the current knowledge on features and proposed causes of neutrophil dysfunction in cirrhosis, with a focus on current knowledge gaps and limitations, as well as opportunities for future investigations in this field.
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Affiliation(s)
- Irina Balazs
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Medical University of Graz, Graz, Austria
- Center for Biomarker Research in Medicine (CBmed), Graz, Austria
| | - Vanessa Stadlbauer
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Medical University of Graz, Graz, Austria
- Center for Biomarker Research in Medicine (CBmed), Graz, Austria
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19
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Belica I, Janšáková K, Celušáková H, Kopčíková M, Polónyiová K, Rašková B, Vidošovičová M, Ostatníková D, Babinská K. Plasma cytokine concentrations of children with autism spectrum disorder and neurotypical siblings. Cytokine 2023; 170:156333. [PMID: 37598479 DOI: 10.1016/j.cyto.2023.156333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 08/03/2023] [Accepted: 08/08/2023] [Indexed: 08/22/2023]
Abstract
Several studies of autism spectrum disorder (ASD) have shown cytokine dysregulation in children with ASD, leading to a consideration of the immune theory of the ASD etiopathogenesis and a debate about cytokines as potential biomarkers of ASD. However, the results of these studies are still inconsistent. Overall, studies comparing the cytokine levels of children with ASD and neurotypical siblings achieved relatively different results than studies with control groups of non-siblings. The studies suggest that the immune profile of siblings of individuals with ASD serving as control is more similar to children with ASD than the profile of non-siblings. However, there are still only a few studies with control groups including neurotypical siblings of children with ASD. The aim of our study was to determine whether the concentration of plasma cytokine levels may differentiate children with ASD from their neurotypical siblings. The sample consisted of 40 children with ASD (mean age 7.11 years, SD 2.9) and 21 neurotypical siblings (mean age 7.38, SD 3.3). Levels of 20 cytokines were included into the statistical analysis. A multiple logistic regression model using multiple corrections showed that an increase in log-transformed plasma G-CSF (granulocyte colony stimulating factor) concentration is associated with an increased risk of the child being diagnosed as an ASD case (OR = 4.35, 95% CI 1.77, 10.73). Although the significantly increased concentration of G-CSF suggests a slightly different activity of the immune system of children with ASD, the overall cytokine profile of their siblings appeared to be very similar.
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Affiliation(s)
- Ivan Belica
- Institute of Physiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia; Research Institute for Child Psychology and Pathopsychology, Bratislava, Slovakia
| | - Katarína Janšáková
- Institute of Physiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Hana Celušáková
- Institute of Physiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Mária Kopčíková
- Institute of Physiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Katarína Polónyiová
- Institute of Physiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Barbara Rašková
- Institute of Physiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Mária Vidošovičová
- Institute of Physiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Daniela Ostatníková
- Institute of Physiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Katarína Babinská
- Institute of Physiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia.
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20
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Abstract
Emerging evidence suggest a major role for the gut microbiome in wound infections. A Trojan Horse mechanism of surgical site infections has been hypothesized to occur when pathogens in the gut, gums, and periodontal areas enter an immune cell and silently travel to the wound site where they release their infectious payload. Genetic tracking of microbes at the strain level is now possible with genetic sequencing techniques and can clarify the origin of microbes that cause wound infections. An emerging field of dietary prehabilitation to modulate the microbiome before surgery is being described to improve infection-related outcomes from surgery.
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Affiliation(s)
- Sanjiv Hyoju
- Department of Surgery, University of Chicago, Pritzker School of Medicine, 5841 South Maryland, Chicago, IL 60637, USA
| | - Kaylie Machutta
- University of Nevada, Reno School of Medicine, 1664 North Virginia Street, Reno, NV 89557, USA
| | - Monika A Krezalek
- Northshore University Health Systems, 1000 Central Street Suite 800, Evanston, IL 60201, USA
| | - John C Alverdy
- Department of Surgery, University of Chicago, Pritzker School of Medicine, 5841 South Maryland, Chicago, IL 60637, USA.
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21
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Gibellini L, Borella R, Santacroce E, Serattini E, Boraldi F, Quaglino D, Aramini B, De Biasi S, Cossarizza A. Circulating and Tumor-Associated Neutrophils in the Era of Immune Checkpoint Inhibitors: Dynamics, Phenotypes, Metabolism, and Functions. Cancers (Basel) 2023; 15:3327. [PMID: 37444436 DOI: 10.3390/cancers15133327] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/16/2023] [Accepted: 06/22/2023] [Indexed: 07/15/2023] Open
Abstract
Neutrophils are the most abundant myeloid cells in the blood and are a considerable immunological component of the tumor microenvironment. However, their functional importance has often been ignored, as they have always been considered a mono-dimensional population of terminally differentiated, short-living cells. During the last decade, the use of cutting-edge, single-cell technologies has revolutionized the classical view of these cells, unmasking their phenotypic and functional heterogeneity. In this review, we summarize the emerging concepts in the field of neutrophils in cancer, by reviewing the recent literature on the heterogeneity of both circulating neutrophils and tumor-associated neutrophils, as well as their possible significance in tumor prognosis and resistance to immune checkpoint inhibitors.
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Affiliation(s)
- Lara Gibellini
- Department of Medical and Surgical Sciences for Children and Adults, University of Modena and Reggio Emilia, 41121 Modena, Italy
| | - Rebecca Borella
- Department of Medical and Surgical Sciences for Children and Adults, University of Modena and Reggio Emilia, 41121 Modena, Italy
| | - Elena Santacroce
- Department of Medical and Surgical Sciences for Children and Adults, University of Modena and Reggio Emilia, 41121 Modena, Italy
| | - Eugenia Serattini
- Department of Medical and Surgical Sciences for Children and Adults, University of Modena and Reggio Emilia, 41121 Modena, Italy
| | - Federica Boraldi
- Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Daniela Quaglino
- Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy
| | - Beatrice Aramini
- Division of Thoracic Surgery, Department of Medical and Surgical Sciences (DIMEC), University Hospital GB Morgagni-L Pierantoni, 47121 Forlì, Italy
| | - Sara De Biasi
- Department of Medical and Surgical Sciences for Children and Adults, University of Modena and Reggio Emilia, 41121 Modena, Italy
| | - Andrea Cossarizza
- Department of Medical and Surgical Sciences for Children and Adults, University of Modena and Reggio Emilia, 41121 Modena, Italy
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22
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Silva LM, Kim TS, Moutsopoulos NM. Neutrophils are gatekeepers of mucosal immunity. Immunol Rev 2023; 314:125-141. [PMID: 36404627 PMCID: PMC10496120 DOI: 10.1111/imr.13171] [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] [Indexed: 11/22/2022]
Abstract
Mucosal tissues are constantly exposed to the outside environment. They receive signals from the commensal microbiome and tissue-specific triggers including alimentary and airborne elements and are tasked to maintain balance in the absence of inflammation and infection. Here, we present neutrophils as sentinel cells in mucosal immunity. We discuss the roles of neutrophils in mucosal homeostasis and overview clinical susceptibilities in patients with neutrophil defects. Finally, we present concepts related to specification of neutrophil responses within specific mucosal tissue microenvironments.
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Affiliation(s)
- Lakmali M. Silva
- Oral Immunity and Infection Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892
- Proteases and Tissue Remodeling Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Tae Sung Kim
- Oral Immunity and Infection Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892
| | - Niki M. Moutsopoulos
- Oral Immunity and Infection Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892
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23
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Siwicki M, Kubes P. Neutrophils in host defense, healing, and hypersensitivity: Dynamic cells within a dynamic host. J Allergy Clin Immunol 2023; 151:634-655. [PMID: 36642653 DOI: 10.1016/j.jaci.2022.12.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 11/11/2022] [Accepted: 12/02/2022] [Indexed: 01/15/2023]
Abstract
Neutrophils are cells of the innate immune system that are extremely abundant in vivo and respond quickly to infection, injury, and inflammation. Their constant circulation throughout the body makes them some of the first responders to infection, and indeed they play a critical role in host defense against bacterial and fungal pathogens. It is now appreciated that neutrophils also play an important role in tissue healing after injury. Their short life cycle, rapid response kinetics, and vast numbers make neutrophils a highly dynamic and potentially extremely influential cell population. It has become clear that they are highly integrated with other cells of the immune system and can thus exert critical effects on the course of an inflammatory response; they can further impact tissue homeostasis and recovery after challenge. In this review, we discuss the fundamentals of neutrophils in host defense and healing; we explore the relationship between neutrophils and the dynamic host environment, including circadian cycles and the microbiome; we survey the field of neutrophils in asthma and allergy; and we consider the question of neutrophil heterogeneity-namely, whether there could be specific subsets of neutrophils that perform different functions in vivo.
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Affiliation(s)
- Marie Siwicki
- Immunology Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Paul Kubes
- Immunology Research Group, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada.
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24
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Trtić N, Mori M, Matsui S, Nakamura N, Fukamachi H, Kurosawa M, Morisaki H, Maruoka Y, Mayers M, Okahashi N, Kuwata H, Itsumi M. Oral commensal bacterial flora is responsible for peripheral differentiation of neutrophils in the oral mucosa in the steady state. J Oral Biosci 2023; 65:119-125. [PMID: 36464149 DOI: 10.1016/j.job.2022.11.002] [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: 08/03/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 12/05/2022]
Abstract
OBJECTIVES Commensal bacteria in the host body play a fundamental role in the differentiation and maintenance of the immune system. Studies on intestinal immunity have revealed that, under steady-state conditions, microflora have an important role in the maintenance of health. However, the role of oral commensal bacteria on the oral immune system is still unclear. Here, we clarify the interactions between commensal bacteria and the oral mucosal immune system under steady-state conditions. METHODS We used germ-free mice that had never been exposed to bacteria and conventional mice grown with normal bacterial flora. Oral cells were isolated from the oral mucosa, stained with specific antibodies, and analyzed by flow cytometry. For the detection of myeloperoxidase and intracellular cytokines, oral cells were stimulated with N-formyl-methionine-leucyl-phenylalanine and phorbol 12-myristate 13-acetate/ionomycin, respectively. RESULTS We found that the oral mucosa harbored more neutrophils in germ-free mice than in conventional mice. However, the majority of neutrophils in the germ-free oral mucosa exhibited an immature phenotype. Other immune cells, including macrophages, T cells, and B cells, in the oral mucosa of germ-free mice showed similar differentiation to those in conventional mice. These results indicate that in the steady-state oral mucosa, the normal commensal flora promote the peripheral differentiation of neutrophils. CONCLUSIONS The presence of commensal flora is critical for the development of adequate immune system in the oral mucosa.
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Affiliation(s)
- Nataša Trtić
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Department of Periodontology and Oral Medicine, Faculty of Medicine, University of Banja Luka, Bulevar Vojvode Petra Bojovica 2, Banja Luka, 78000, Bosnia and Herzegovina
| | - Mina Mori
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Department of Special Needs Dentistry, Division of Medical and Dental Cooperative Dentistry, Showa University, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo, 145-8515, Japan
| | - Shohei Matsui
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Department of Special Needs Dentistry, Division of Medical and Dental Cooperative Dentistry, Showa University, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo, 145-8515, Japan
| | - Natsuno Nakamura
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan; Department of Special Needs Dentistry, Division of Dentistry for Persons with Disabilities, School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo, 145-8515, Japan
| | - Haruka Fukamachi
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
| | - Mie Kurosawa
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
| | - Hirobumi Morisaki
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
| | - Yasubumi Maruoka
- Department of Special Needs Dentistry, Division of Medical and Dental Cooperative Dentistry, Showa University, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo, 145-8515, Japan
| | - Mie Mayers
- Department of Special Needs Dentistry, Division of Medical and Dental Cooperative Dentistry, Showa University, 2-1-1 Kitasenzoku, Ohta-ku, Tokyo, 145-8515, Japan
| | - Nobuo Okahashi
- Center for Frontier Oral Science, Osaka University Graduate School of Dentistry, 1-8 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Hirotaka Kuwata
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan
| | - Momoe Itsumi
- Department of Oral Microbiology and Immunology, School of Dentistry, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan.
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25
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Otte ML, Lama Tamang R, Papapanagiotou J, Ahmad R, Dhawan P, Singh AB. Mucosal healing and inflammatory bowel disease: Therapeutic implications and new targets. World J Gastroenterol 2023; 29:1157-1172. [PMID: 36926666 PMCID: PMC10011951 DOI: 10.3748/wjg.v29.i7.1157] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/16/2022] [Accepted: 02/14/2023] [Indexed: 02/21/2023] Open
Abstract
Mucosal healing (MH) is vital in maintaining homeostasis within the gut and protecting against injury and infections. Multiple factors and signaling pathways contribute in a dynamic and coordinated manner to maintain intestinal homeostasis and mucosal regeneration/repair. However, when intestinal homeostasis becomes chronically disturbed and an inflammatory immune response is constitutively active due to impairment of the intestinal epithelial barrier autoimmune disease results, particularly inflammatory bowel disease (IBD). Many proteins and signaling pathways become dysregulated or impaired during these pathological conditions, with the mechanisms of regulation just beginning to be understood. Consequently, there remains a relative lack of broadly effective therapeutics that can restore MH due to the complexity of both the disease and healing processes, so tissue damage in the gastrointestinal tract of patients, even those in clinical remission, persists. With increased understanding of the molecular mechanisms of IBD and MH, tissue damage from autoimmune disease may in the future be ameliorated by developing therapeutics that enhance the body’s own healing response. In this review, we introduce the concept of mucosal healing and its relevance in IBD as well as discuss the mechanisms of IBD and potential strategies for altering these processes and inducing MH.
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Affiliation(s)
- Megan Lynn Otte
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Raju Lama Tamang
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Julia Papapanagiotou
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Rizwan Ahmad
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Punita Dhawan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Amar B Singh
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, United States
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26
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Alsayed AR, Abed A, Khader HA, Al-Shdifat LMH, Hasoun L, Al-Rshaidat MMD, Alkhatib M, Zihlif M. Molecular Accounting and Profiling of Human Respiratory Microbial Communities: Toward Precision Medicine by Targeting the Respiratory Microbiome for Disease Diagnosis and Treatment. Int J Mol Sci 2023; 24:4086. [PMID: 36835503 PMCID: PMC9966333 DOI: 10.3390/ijms24044086] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/05/2023] [Accepted: 02/14/2023] [Indexed: 02/22/2023] Open
Abstract
The wide diversity of microbiota at the genera and species levels across sites and individuals is related to various causes and the observed differences between individuals. Efforts are underway to further understand and characterize the human-associated microbiota and its microbiome. Using 16S rDNA as a genetic marker for bacterial identification improved the detection and profiling of qualitative and quantitative changes within a bacterial population. In this light, this review provides a comprehensive overview of the basic concepts and clinical applications of the respiratory microbiome, alongside an in-depth explanation of the molecular targets and the potential relationship between the respiratory microbiome and respiratory disease pathogenesis. The paucity of robust evidence supporting the correlation between the respiratory microbiome and disease pathogenesis is currently the main challenge for not considering the microbiome as a novel druggable target for therapeutic intervention. Therefore, further studies are needed, especially prospective studies, to identify other drivers of microbiome diversity and to better understand the changes in the lung microbiome along with the potential association with disease and medications. Thus, finding a therapeutic target and unfolding its clinical significance would be crucial.
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Affiliation(s)
- Ahmad R. Alsayed
- Department of Clinical Pharmacy and Therapeutics, Faculty of Pharmacy, Applied Science Private University, Amman 11931, Jordan
| | - Anas Abed
- Pharmacological and Diagnostic Research Centre, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman 11931, Jordan
| | - Heba A. Khader
- Department of Clinical Pharmacy and Pharmacy Practice, Faculty of Pharmaceutical Sciences, The Hashemite University, P.O. Box 330127, Zarqa 13133, Jordan
| | - Laith M. H. Al-Shdifat
- Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmacy, Applied Science Private University, Amman 11931, Jordan
| | - Luai Hasoun
- Department of Clinical Pharmacy and Therapeutics, Faculty of Pharmacy, Applied Science Private University, Amman 11931, Jordan
| | - Mamoon M. D. Al-Rshaidat
- Laboratory for Molecular and Microbial Ecology (LaMME), Department of Biological Sciences, School of Sciences, The University of Jordan, Amman 11942, Jordan
| | - Mohammad Alkhatib
- Department of Experimental Medicine, University of Rome “Tor Vergata”, 00133 Roma, Italy
| | - Malek Zihlif
- Department of Pharmacology, School of Medicine, The University of Jordan, Amman 11942, Jordan
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27
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Romero-Figueroa MDS, Ramírez-Durán N, Montiel-Jarquín AJ, Horta-Baas G. Gut-joint axis: Gut dysbiosis can contribute to the onset of rheumatoid arthritis via multiple pathways. Front Cell Infect Microbiol 2023; 13:1092118. [PMID: 36779190 PMCID: PMC9911673 DOI: 10.3389/fcimb.2023.1092118] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/16/2023] [Indexed: 02/14/2023] Open
Abstract
Rheumatoid Arthritis (RA) is an autoimmune disease characterized by loss of immune tolerance and chronic inflammation. It is pathogenesis complex and includes interaction between genetic and environmental factors. Current evidence supports the hypothesis that gut dysbiosis may play the role of environmental triggers of arthritis in animals and humans. Progress in the understanding of the gut microbiome and RA. has been remarkable in the last decade. In vitro and in vivo experiments revealed that gut dysbiosis could shape the immune system and cause persistent immune inflammatory responses. Furthermore, gut dysbiosis could induce alterations in intestinal permeability, which have been found to predate arthritis onset. In contrast, metabolites derived from the intestinal microbiota have an immunomodulatory and anti-inflammatory effect. However, the precise underlying mechanisms by which gut dysbiosis induces the development of arthritis remain elusive. This review aimed to highlight the mechanisms by which gut dysbiosis could contribute to the pathogenesis of RA. The overall data showed that gut dysbiosis could contribute to RA pathogenesis by multiple pathways, including alterations in gut barrier function, molecular mimicry, gut dysbiosis influences the activation and the differentiation of innate and acquired immune cells, cross-talk between gut microbiota-derived metabolites and immune cells, and alterations in the microenvironment. The relative weight of each of these mechanisms in RA pathogenesis remains uncertain. Recent studies showed a substantial role for gut microbiota-derived metabolites pathway, especially butyrate, in the RA pathogenesis.
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Affiliation(s)
| | - Ninfa Ramírez-Durán
- Laboratory of Medical and Environmental Microbiology, Department of Medicine, Autonomous University of the State of Mexico, Toluca, Mexico
| | - Alvaro José Montiel-Jarquín
- Dirección de Educación e Investigación en Salud, Hospital de Especialidades de Puebla, Instituto Mexicano del Seguro Social, Puebla, Mexico
| | - Gabriel Horta-Baas
- Rheumatology Service, Internal Medicine Department, Instituto Mexicano del Seguro Social, Merida, Mexico,*Correspondence: Gabriel Horta-Baas,
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28
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Kayongo A, Robertson NM, Siddharthan T, Ntayi ML, Ndawula JC, Sande OJ, Bagaya BS, Kirenga B, Mayanja-Kizza H, Joloba ML, Forslund SK. Airway microbiome-immune crosstalk in chronic obstructive pulmonary disease. Front Immunol 2023; 13:1085551. [PMID: 36741369 PMCID: PMC9890194 DOI: 10.3389/fimmu.2022.1085551] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/28/2022] [Indexed: 01/19/2023] Open
Abstract
Chronic Obstructive Pulmonary Disease (COPD) has significantly contributed to global mortality, with three million deaths reported annually. This impact is expected to increase over the next 40 years, with approximately 5 million people predicted to succumb to COPD-related deaths annually. Immune mechanisms driving disease progression have not been fully elucidated. Airway microbiota have been implicated. However, it is still unclear how changes in the airway microbiome drive persistent immune activation and consequent lung damage. Mechanisms mediating microbiome-immune crosstalk in the airways remain unclear. In this review, we examine how dysbiosis mediates airway inflammation in COPD. We give a detailed account of how airway commensal bacteria interact with the mucosal innate and adaptive immune system to regulate immune responses in healthy or diseased airways. Immune-phenotyping airway microbiota could advance COPD immunotherapeutics and identify key open questions that future research must address to further such translation.
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Affiliation(s)
- Alex Kayongo
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda,Department of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda,Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda,Department of Medicine, Center for Emerging Pathogens, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, NJ, United States
| | | | - Trishul Siddharthan
- Division of Pulmonary Medicine, School of Medicine, University of Miami, Miami, FL, United States
| | - Moses Levi Ntayi
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda,Department of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda,Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Josephine Caren Ndawula
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Obondo J. Sande
- Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Bernard S. Bagaya
- Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Bruce Kirenga
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Harriet Mayanja-Kizza
- Department of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Moses L. Joloba
- Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Sofia K. Forslund
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany,Experimental and Clinical Research Center, a cooperation of Charité - Universitatsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Berlin, Germany,Charité-Universitatsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany,DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany,Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany,*Correspondence: Sofia K. Forslund,
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29
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Schneider-Crease IA, Feder JA, Baniel A, McCann C, Haile AA, Abebe B, Fitzgerald L, Gomery MA, Simberloff RA, Petrie ZL, Gabriel S, Dorny P, Fashing PJ, Nguyen N, Bergman TJ, Beehner JC, Snyder-Mackler N, Lu A. Urinary neopterin reflects immunological variation associated with age, helminth parasitism, and the microbiome in a wild primate. Sci Rep 2022; 12:21307. [PMID: 36494454 PMCID: PMC9734142 DOI: 10.1038/s41598-022-25298-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/28/2022] [Indexed: 12/13/2022] Open
Abstract
Neopterin, a product of activated white blood cells, is a marker of nonspecific inflammation that can capture variation in immune investment or disease-related immune activity and can be collected noninvasively in urine. Mounting studies in wildlife point to lifetime patterns in neopterin related to immune development, aging, and certain diseases, but rarely are studies able to assess whether neopterin can capture multiple concurrent dimensions of health and disease in a single system. We assessed the relationship between urinary neopterin stored on filter paper and multiple metrics of health and disease in wild geladas (Theropithecus gelada), primates endemic to the Ethiopian highlands. We tested whether neopterin captures age-related variation in inflammation arising from developing immunity in infancy and chronic inflammation in old age, inflammation related to intramuscular tapeworm infection, helminth-induced anti-inflammatory immunomodulation, and perturbations in the gastrointestinal microbiome. We found that neopterin had a U-shaped relationship with age, no association with larval tapeworm infection, a negative relationship with metrics related to gastrointestinal helminth infection, and a negative relationship with microbial diversity. Together with growing research on neopterin and specific diseases, our results demonstrate that urinary neopterin can be a powerful tool for assessing multiple dimensions of health and disease in wildlife.
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Affiliation(s)
- India A Schneider-Crease
- School of Human Evolution and Social Change, Arizona State University, Tempe, AZ, USA.
- Center for Evolution and Medicine, Arizona State University, Tempe, AZ, USA.
| | - Jacob A Feder
- Interdepartmental Doctoral Program in Anthropological Sciences, Stony Brook University, Stony Brook, NY, USA
| | - Alice Baniel
- Center for Evolution and Medicine, Arizona State University, Tempe, AZ, USA
- School of Life Sciences, Arizona State University, Tempe, AZ, USA
| | - Colleen McCann
- Department of Mammals, Bronx Zoo, Wildlife Conservation Society, New York, NY, USA
- New York Consortium in Evolutionary Primatology, New York, NY, USA
| | | | - Belayneh Abebe
- African Wildlife Foundation, Simien Mountains Landscape Conservation and Management Project, Debark, Ethiopia
| | | | - Megan A Gomery
- Simien Mountains Gelada Research Project, Debark, Ethiopia
| | - Ruth A Simberloff
- Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN, USA
| | | | - Sarah Gabriel
- Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Pierre Dorny
- Department of Biomedical Sciences, Institute for Tropical Medicine, Antwerp, Belgium
| | - Peter J Fashing
- Department of Anthropology, California State University Fullerton, Fullerton, CA, USA
- Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, Oslo, Norway
| | - Nga Nguyen
- Department of Anthropology, California State University Fullerton, Fullerton, CA, USA
- Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, Oslo, Norway
| | - Thore J Bergman
- Department of Ecology and Evolution, University of Michigan, Ann Arbor, MI, USA
- Department of Psychology, University of Michigan, Ann Arbor, MI, USA
| | - Jacinta C Beehner
- Department of Psychology, University of Michigan, Ann Arbor, MI, USA
- Department of Anthropology, University of Michigan, Ann Arbor, MI, USA
| | - Noah Snyder-Mackler
- Center for Evolution and Medicine, Arizona State University, Tempe, AZ, USA
- School of Life Sciences, Arizona State University, Tempe, AZ, USA
| | - Amy Lu
- Department of Anthropology, Stony Brook University, Stony Brook, NY, USA
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30
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Adapen C, Réot L, Menu E. Role of the human vaginal microbiota in the regulation of inflammation and sexually transmitted infection acquisition: Contribution of the non-human primate model to a better understanding? FRONTIERS IN REPRODUCTIVE HEALTH 2022; 4:992176. [PMID: 36560972 PMCID: PMC9763629 DOI: 10.3389/frph.2022.992176] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 11/14/2022] [Indexed: 12/12/2022] Open
Abstract
The human vaginal microbiota has a central role in the regulation of the female reproductive tract (FRT) inflammation. Indeed, on one hand an optimal environment leading to a protection against sexually transmitted infections (STI) is associated with a high proportion of Lactobacillus spp. (eubiosis). On the other hand, a more diverse microbiota with a high amount of non-Lactobacillus spp. (dysbiosis) is linked to a higher local inflammation and an increased STI susceptibility. The composition of the vaginal microbiota is influenced by numerous factors that may lead to a dysbiotic environment. In this review, we first discuss how the vaginal microbiota composition affects the local inflammation with a focus on the cytokine profiles, the immune cell recruitment/phenotype and a large part devoted on the interactions between the vaginal microbiota and the neutrophils. Secondly, we analyze the interplay between STI and the vaginal microbiota and describe several mechanisms of action of the vaginal microbiota. Finally, the input of the NHP model in research focusing on the FRT health including vaginal microbiota or STI acquisition/control and treatment is discussed.
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Affiliation(s)
- Cindy Adapen
- Micalis Institute, AgroParisTech, INRAE, Université Paris-Saclay, Jouy-en-Josas, France
| | - Louis Réot
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases (IMVA-HB)/Department of Infectious Disease Models and Innovative Therapies (IDMIT), Fontenay-aux-Roses, France
| | - Elisabeth Menu
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases (IMVA-HB)/Department of Infectious Disease Models and Innovative Therapies (IDMIT), Fontenay-aux-Roses, France,Mucosal Immunity and Sexually Transmitted Infection Control (MISTIC) Group, Department of Virology, Institut Pasteur, Paris, France,Correspondence: Elisabeth Menu
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31
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Reactive granulopoiesis depends on T-cell production of IL-17A and neutropenia-associated alteration of gut microbiota. Proc Natl Acad Sci U S A 2022; 119:e2211230119. [PMID: 36409919 PMCID: PMC9860329 DOI: 10.1073/pnas.2211230119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Granulopoiesis in the bone marrow adjusts cellular output as demand for neutrophils changes. Reactive granulopoiesis is induced by profound neutropenia, but its mechanism remains to be clarified. We herein explored its mechanisms using mouse models of syngeneic hematopoietic stem cell transplantation (SCT) and 5-fluorouracil-induced neutropenia. After SCT, T cell production of IL-17A was up-regulated. Neutrophil recovery was significantly delayed in IL-17A-deficient or T cell-deficient RAG1-/- mice, and adoptive transfer of wild-type (WT) T cells facilitated neutrophil engraftment. Gut decontamination with oral antibiotics suppressed T cell production of IL-17A and impaired neutrophil recovery. Transplantation of fecal microbiota collected from neutropenic, not naive, mice promoted neutrophil recovery in these mice, suggesting that neutropenia-associated microbiota had a potential to stimulate reactive granulopoiesis. Our study uncovered a cross talk between gut microbiota and neutropenia after SCT and chemotherapy.
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32
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Jablonska J, Brandau S. PMN-MDSC in newborns: Regulation of the regulators. J Leukoc Biol 2022; 112:949-950. [PMID: 35946321 DOI: 10.1002/jlb.3ce0522-283r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/15/2022] [Accepted: 07/16/2022] [Indexed: 12/24/2022] Open
Abstract
PMN-MDSC are pathologically activated neutrophils that acquire T cell (and NK cell) suppressive activity and thus function as negative regulators of effector lymphocytes in many disease conditions.[1] For many years, these PMN-MDSC have mainly been seen as contributors to disease progression and severity, best exemplified in the context of cancer. However, more recently, PMN-MDSC have also been described in newborn mice and humans.[2] This finding raised the question on the potential functional roles of these regulatory myeloid cells in neonate immunobiology. During the first days (mice) or weeks (human) of life, an initial seeding of microbiota in the gut takes place. The appearance of these microbiota triggers immune responses that could potentially lead to harmful inflammation and immunopathology. In this early phase of life, PMN-MDSC could be beneficial by limiting overshooting immune responses. Indeed, a recent paper by He et al.[3] describes the transient presence of PMN-MDSC during the first month of life. Such PMN-MDSC have been shown to suppress T cells in a contact-depended manner, but the mechanism behind the transitory nature of this phenomenon has not yet been elucidated. In this issue of the Journal of Leukocyte Biology Perego et al. describe molecular mechanisms that regulate this transient increase and subsequent decrease of PMN-MDSC in newborn mice.[4].
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Affiliation(s)
- Jadwiga Jablonska
- Department of Otorhinolaryngology, University Hospital Essen, Essen, Germany
| | - Sven Brandau
- Department of Otorhinolaryngology, University Hospital Essen, Essen, Germany
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33
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Abstract
Neutrophils, the most abundant innate immune cells, play essential roles in the innate immune system. As key innate immune cells, neutrophils detect intrusion of pathogens and initiate immune cascades with their functions; swarming (arresting), cytokine production, degranulation, phagocytosis, and projection of neutrophil extracellular trap. Because of their short lifespan and consumption during immune response, neutrophils need to be generated consistently, and generation of newborn neutrophils (granulopoiesis) should fulfill the environmental/systemic demands for training in cases of infection. Accumulating evidence suggests that neutrophils also play important roles in the regulation of adaptive immunity. Neutrophil-mediated immune responses end with apoptosis of the cells, and proper phagocytosis of the apoptotic body (efferocytosis) is crucial for initial and post resolution by producing tolerogenic innate/adaptive immune cells. However, inflammatory cues can impair these cascades, resulting in systemic immune activation; necrotic/pyroptotic neutrophil bodies can aggravate the excessive inflammation, increasing inflammatory macrophage and dendritic cell activation and subsequent TH1/TH17 responses contributing to the regulation of the pathogenesis of autoimmune disease. In this review, we briefly introduce recent studies of neutrophil function as players of immune response.
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Affiliation(s)
- Mingyu Lee
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul 06355, Korea
| | - Suh Yeon Lee
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Korea
| | - Yoe-Sik Bae
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul 06355, Korea
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Korea
- Corresponding author. Tel: +82-31-290-5914; Fax: +82-31-290-7015; E-mail:
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Corrêa RO, Castro PR, Moser R, Ferreira CM, Quesniaux VFJ, Vinolo MAR, Ryffel B. Butyrate: Connecting the gut-lung axis to the management of pulmonary disorders. Front Nutr 2022; 9:1011732. [PMID: 36337621 PMCID: PMC9631819 DOI: 10.3389/fnut.2022.1011732] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 09/29/2022] [Indexed: 12/24/2022] Open
Abstract
Short-chain fatty acids (SCFAs) are metabolites released by bacterial components of the microbiota. These molecules have a wide range of effects in the microbiota itself, but also in host cells in which they are known for contributing to the regulation of cell metabolism, barrier function, and immunological responses. Recent studies indicate that these molecules are important players in the gut-lung axis and highlight the possibility of using strategies that alter their intestinal production to prevent or treat distinct lung inflammatory diseases. Here, we review the effects of the SCFA butyrate and its derivatives in vitro and in vivo on murine models of respiratory disorders, besides discussing the potential therapeutic use of butyrate and the other SCFAs in lung diseases.
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Affiliation(s)
- Renan Oliveira Corrêa
- Laboratory of Immunoinflammation, Department of Genetics and Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
- Laboratory of Intestinal Immunology, Institut Imagine, INSERM U1163, Paris, France
| | - Pollyana Ribeiro Castro
- Laboratory of Immunoinflammation, Department of Genetics and Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | | | - Caroline Marcantonio Ferreira
- Department of Pharmaceutics Science, Institute of Environmental, Chemistry, and Pharmaceutical Sciences, Federal University of São Paulo, Diadema, Brazil
| | | | - Marco Aurélio Ramirez Vinolo
- Laboratory of Immunoinflammation, Department of Genetics and Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
- Experimental Medicine Research Cluster, Institute of Biology, University of Campinas, Campinas, Brazil
- Center for Research on Obesity and Comorbidities, University of Campinas, Campinas, Brazil
- *Correspondence: Marco Aurélio Ramirez Vinolo,
| | - Bernhard Ryffel
- CNRS, INEM, UMR 7355, University of Orléans, Orléans, France
- Bernhard Ryffel,
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Wasserman MG, Graham RJ, Mansbach JM. Airway Bacterial Colonization, Biofilms and Blooms, and Acute Respiratory Infection. Pediatr Crit Care Med 2022; 23:e476-e482. [PMID: 35767569 PMCID: PMC9529803 DOI: 10.1097/pcc.0000000000003017] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Mollie G Wasserman
- Department of General Pediatrics, Boston Children's Hospital, Boston, MA
| | - Robert J Graham
- Department of Anesthesiology, Critical Care and Pain Medicine, Division of Critical Care Medicine, Boston Children's Hospital, Boston, MA
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Trzeciak A, Mongre RK, Kim MR, Lim K, Madero RA, Parkhurst CN, Pietropaoli AP, Kim M. Neutrophil heterogeneity in complement C1q expression associated with sepsis mortality. Front Immunol 2022; 13:965305. [PMID: 35983035 PMCID: PMC9380571 DOI: 10.3389/fimmu.2022.965305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 07/08/2022] [Indexed: 11/13/2022] Open
Abstract
Sepsis is a life-threatening systemic inflammatory condition causing approximately 11 million annual deaths worldwide. Although key hyperinflammation-based organ dysfunctions that drive disease pathology have been recognized, our understanding of the factors that predispose patients to septic mortality is limited. Due to the lack of reliable prognostic measures, the development of appropriate clinical management that improves patient survival remains challenging. Here, we discovered that a subpopulation of CD49chigh neutrophils with dramatic upregulation of the complement component 1q (C1q) gene expression arises during severe sepsis. We further found that deceased septic patients failed to maintain C1q protein expression in their neutrophils, whereas septic survivors expressed higher levels of C1q. In mouse sepsis models, blocking C1q with neutralizing antibodies or conditionally knocking out C1q in neutrophils led to a significant increase in septic mortality. Apoptotic neutrophils release C1q to control their own clearance in critically injured organs during sepsis; thus, treatment of septic mice with C1q drastically increased survival. These results suggest that neutrophil C1q is a reliable prognostic biomarker of septic mortality and a potential novel therapeutic target for the treatment of sepsis.
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Affiliation(s)
- Alissa Trzeciak
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, United States
| | - Raj Kumar Mongre
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, United States
| | - Ma Rie Kim
- Department of Biomedical Engineering, University of Rochester Medical Center, Rochester, NY, United States
| | - Kihong Lim
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, United States
| | - Rafael A. Madero
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, United States
| | - Christopher N. Parkhurst
- Division of Pulmonary and Critical Care Medicine, Weill-Cornell Medicine, New York, NY, United States
| | - Anthony P. Pietropaoli
- Pulmonary and Critical Care Medicine Division, University of Rochester, Rochester, NY, United States
| | - Minsoo Kim
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, United States
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Wang J, Wang J. Neutrophils, functions beyond host defense. Cell Immunol 2022; 379:104579. [PMID: 35901576 DOI: 10.1016/j.cellimm.2022.104579] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 07/06/2022] [Accepted: 07/17/2022] [Indexed: 11/30/2022]
Abstract
Neutrophils are the most abundant, ephemeral cell type in human blood. As the first line of defense in the host immune system, neutrophils mature in the bone marrow after undergoing multiple stages of development and then are released into the peripheral blood and conduct a surveillance function. Recent advances in cutting-edge techniques such as single-cell sequencing have uncovered the complexity and plasticity of neutrophils under homeostatic and inflammatory conditions. The exploration of neutrophil heterogeneity and function under disease and homeostasis settings has revealed many unexpected roles of neutrophils beyond a phagocyte. Furthermore, neutrophils are known to actively communicate with innate and adaptive immunocytes via direct or indirect interactions, allowing the modulation of various immune cells. In this review, we will discuss the versatile identities of neutrophils that have been discovered in recent decades, as well as the interplay between neutrophils and other cells.
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Affiliation(s)
- Jin Wang
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing Wang
- Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Onisiforou A, Spyrou GM. Immunomodulatory effects of microbiota-derived metabolites at the crossroad of neurodegenerative diseases and viral infection: network-based bioinformatics insights. Front Immunol 2022; 13:843128. [PMID: 35928817 PMCID: PMC9344014 DOI: 10.3389/fimmu.2022.843128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 06/28/2022] [Indexed: 11/13/2022] Open
Abstract
Bidirectional cross-talk between commensal microbiota and the immune system is essential for the regulation of immune responses and the formation of immunological memory. Perturbations of microbiome-immune system interactions can lead to dysregulated immune responses against invading pathogens and/or to the loss of self-tolerance, leading to systemic inflammation and genesis of several immune-mediated pathologies, including neurodegeneration. In this paper, we first investigated the contribution of the immunomodulatory effects of microbiota (bacteria and fungi) in shaping immune responses and influencing the formation of immunological memory cells using a network-based bioinformatics approach. In addition, we investigated the possible role of microbiota-host-immune system interactions and of microbiota-virus interactions in a group of neurodegenerative diseases (NDs): Amyotrophic Lateral Sclerosis (ALS), Multiple Sclerosis (MS), Parkinson’s disease (PD) and Alzheimer’s disease (AD). Our analysis highlighted various aspects of the innate and adaptive immune response systems that can be modulated by microbiota, including the activation and maturation of microglia which are implicated in the development of NDs. It also led to the identification of specific microbiota components which might be able to influence immune system processes (ISPs) involved in the pathogenesis of NDs. In addition, it indicated that the impact of microbiota-derived metabolites in influencing disease-associated ISPs, is higher in MS disease, than in AD, PD and ALS suggesting a more important role of microbiota mediated-immune effects in MS.
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Kaltenmeier C, Wang R, Popp B, Geller D, Tohme S, Yazdani HO. Role of Immuno-Inflammatory Signals in Liver Ischemia-Reperfusion Injury. Cells 2022; 11:cells11142222. [PMID: 35883665 PMCID: PMC9323912 DOI: 10.3390/cells11142222] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/09/2022] [Accepted: 07/13/2022] [Indexed: 02/01/2023] Open
Abstract
Ischemia reperfusion injury (IRI) is a major obstacle in liver resection and liver transplantation. The initial step of IRI is mediated through ischemia which promotes the production of reactive oxygen species in Kupffer cells. This furthermore promotes the activation of pro-inflammatory signaling cascades, including tumor necrosis factor-alpha, IL-6, interferon, inducible nitric oxide synthase, TLR9/nuclear-factor kappa B pathway, and the production of damage-associated molecular patterns (DAMPs), such as ATP, histone, high mobility group box 1 (HMGB1), urate, mitochondrial formyl peptides and S100 proteins. With ongoing cell death of hepatocytes during the ischemic phase, DAMPs are built up and released into the circulation upon reperfusion. This promotes a cytokines/chemokine storm that attracts neutrophils and other immune cells to the site of tissue injury. The effect of IRI is further aggravated by the release of cytokines and chemokines, such as epithelial neutrophil activating protein (CXCL5), KC (CXCL1) and MIP-2 (CXCL2), the complement proteins C3a and C5a, mitochondrial-derived formyl peptides, leukotriene B4 and neutrophil extracellular traps (NETs) from migrating neutrophils. These NETs can also activate platelets and form Neutrophil-platelet microthrombi to further worsen ischemia in the liver. In this review we aim to summarize the current knowledge of mediators that promote liver IRI, and we will discuss the role of neutrophils and neutrophil extracellular traps in mediating IRI.
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Affiliation(s)
- Christof Kaltenmeier
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (C.K.); (R.W.); (D.G.); (S.T.)
| | - Ronghua Wang
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (C.K.); (R.W.); (D.G.); (S.T.)
| | - Brandon Popp
- Lake Erie College of Osteopathic Medicine, Erie, PA 16509, USA;
| | - David Geller
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (C.K.); (R.W.); (D.G.); (S.T.)
| | - Samer Tohme
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (C.K.); (R.W.); (D.G.); (S.T.)
| | - Hamza O. Yazdani
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA; (C.K.); (R.W.); (D.G.); (S.T.)
- Correspondence:
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Kwan SY, Sabotta CM, Joon A, Wei P, Petty LE, Below JE, Wu X, Zhang J, Jenq RR, Hawk ET, McCormick JB, Fisher-Hoch SP, Beretta L. Gut Microbiome Alterations Associated with Diabetes in Mexican Americans in South Texas. mSystems 2022; 7:e0003322. [PMID: 35477306 PMCID: PMC9238400 DOI: 10.1128/msystems.00033-22] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 04/02/2022] [Indexed: 02/08/2023] Open
Abstract
Mexican Americans have a high prevalence of diabetes and burden of diabetes-related complications, highlighting the need for novel preventive strategies and noninvasive predictors of diabetes risk tailored to this population. Changes in the gut microbiome have the potential to predict diabetes. Here, we aimed to identify alterations in the gut microbiome associated with diabetes in the high-risk population of Mexican Americans in South Texas. Stool samples were collected from 216 subjects from the population-based Cameron County Hispanic Cohort. Among them, 75 had type 2 diabetes. Taxonomic and functional profiling of the stool samples were assessed by 16S and shotgun metagenomic sequencing, and the influence of genetic factors was explored. The gut microbiome of subjects with diabetes was enriched with proinflammatory Proteobacteria members (Enterobacteriaceae, Escherichia-Shigella) and depleted of butyrate-producing Clostridiales members (Faecalibacterium prausnitzii, Peptostreptococcaceae, and Clostridium sensu stricto 1). The accompanying metagenomic changes in subjects with diabetes suggested dysregulated amino acid metabolism, reduced galacturonate and glucuronate catabolism (correlating with Faecalibacterium prausnitzii abundance), and enriched heme biosynthesis (correlating with Enterobacteriaceae abundance). Polymorphism rs7129790 near MMP27 was strongly associated with high Proteobacteria abundance and was more frequent in this cohort and in individuals of Mexican ancestry than in Europeans. In conclusion, Mexican Americans in South Texas with diabetes display distinct gut microbiome and metagenomic signatures. These signatures may have utility in risk modeling and disease prevention in this high-risk population. IMPORTANCE The gut microbiome composition varies across ethnicities and geographical locations, yet studies on diabetes-associated microbiome changes specific to high-risk Mexican Americans are lacking. Here, we aimed to identify specific alterations associated with diabetes in this population, as well as host genetic factors that may explain increased disease susceptibility in this ethnic group. Using samples from a population-based cohort of Mexican Americans with a high prevalence of obesity and diabetes, we confirmed findings from studies on other ethnicities that suggested promotion of a chronic proinflammatory environment, loss of butyrate production, and compromised intestinal barrier integrity. High abundance of proinflammatory Proteobacteria was associated with a polymorphism that was more frequent in this cohort and in individuals of Mexican ancestry than in Europeans. Validation of microbiome-based risk models for diabetes should be evaluated in prospective cohort studies.
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Affiliation(s)
- Suet-Ying Kwan
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Caroline M. Sabotta
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Aron Joon
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Peng Wei
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Lauren E. Petty
- Vanderbilt Genetics Institute and Department of Genetic Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Jennifer E. Below
- Vanderbilt Genetics Institute and Department of Genetic Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Xiaogang Wu
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jianhua Zhang
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Robert R. Jenq
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Ernest T. Hawk
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Joseph B. McCormick
- School of Public Health, University of Texas Health Science Center at Houston, Brownsville Regional Campus, Brownsville, Texas, USA
| | - Susan P. Fisher-Hoch
- School of Public Health, University of Texas Health Science Center at Houston, Brownsville Regional Campus, Brownsville, Texas, USA
| | - Laura Beretta
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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Mohd Zaki A, Hadingham A, Flaviani F, Haque Y, Mi JD, Finucane D, Dalla Valle G, Mason AJ, Saqi M, Gibbons DL, Tribe RM. Neutrophils Dominate the Cervical Immune Cell Population in Pregnancy and Their Transcriptome Correlates With the Microbial Vaginal Environment. Front Microbiol 2022; 13:904451. [PMID: 35774454 PMCID: PMC9237529 DOI: 10.3389/fmicb.2022.904451] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 05/16/2022] [Indexed: 01/29/2023] Open
Abstract
The cervicovaginal environment in pregnancy is proposed to influence risk of spontaneous preterm birth. The environment is shaped both by the resident microbiota and local inflammation driven by the host response (epithelia, immune cells and mucous). The contributions of the microbiota, metabolome and host defence peptides have been investigated, but less is known about the immune cell populations and how they may respond to the vaginal environment. Here we investigated the maternal immune cell populations at the cervicovaginal interface in early to mid-pregnancy (10–24 weeks of gestation, samples from N = 46 women), we confirmed neutrophils as the predominant cell type and characterised associations between the cervical neutrophil transcriptome and the cervicovaginal metagenome (N = 9 women). In this exploratory study, the neutrophil cell proportion was affected by gestation at sampling but not by birth outcome or ethnicity. Following RNA sequencing (RNA-seq) of a subset of neutrophil enriched cells, principal component analysis of the transcriptome profiles indicated that cells from seven women clustered closely together these women had a less diverse cervicovaginal microbiota than the remaining three women. Expression of genes involved in neutrophil mediated immunity, activation, degranulation, and other immune functions correlated negatively with Gardnerella vaginalis abundance and positively with Lactobacillus iners abundance; microbes previously associated with birth outcome. The finding that neutrophils are the dominant immune cell type in the cervix during pregnancy and that the cervical neutrophil transcriptome of pregnant women may be modified in response to the microbial cervicovaginal environment, or vice versa, establishes the rationale for investigating associations between the innate immune response, cervical shortening and spontaneous preterm birth and the underlying mechanisms.
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Affiliation(s)
- Amirah Mohd Zaki
- Department of Women and Children’s Health, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
| | - Alicia Hadingham
- Department of Women and Children’s Health, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
| | - Flavia Flaviani
- Department of Women and Children’s Health, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
- NIHR Biomedical Research Centre, Guy’s and St. Thomas’ NHS Foundation Trust and King’s College London, London, United Kingdom
| | - Yasmin Haque
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
| | - Jia Dai Mi
- Department of Women and Children’s Health, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
| | - Debbie Finucane
- Department of Women and Children’s Health, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
| | - Giorgia Dalla Valle
- Department of Women and Children’s Health, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
| | - A. James Mason
- Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Science, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
| | - Mansoor Saqi
- NIHR Biomedical Research Centre, Guy’s and St. Thomas’ NHS Foundation Trust and King’s College London, London, United Kingdom
| | - Deena L. Gibbons
- Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
| | - Rachel M. Tribe
- Department of Women and Children’s Health, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
- *Correspondence: Rachel M. Tribe,
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Quail DF, Amulic B, Aziz M, Barnes BJ, Eruslanov E, Fridlender ZG, Goodridge HS, Granot Z, Hidalgo A, Huttenlocher A, Kaplan MJ, Malanchi I, Merghoub T, Meylan E, Mittal V, Pittet MJ, Rubio-Ponce A, Udalova IA, van den Berg TK, Wagner DD, Wang P, Zychlinsky A, de Visser KE, Egeblad M, Kubes P. Neutrophil phenotypes and functions in cancer: A consensus statement. J Exp Med 2022; 219:e20220011. [PMID: 35522219 PMCID: PMC9086501 DOI: 10.1084/jem.20220011] [Citation(s) in RCA: 115] [Impact Index Per Article: 57.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/11/2022] [Accepted: 03/23/2022] [Indexed: 12/12/2022] Open
Abstract
Neutrophils are the first responders to infection and inflammation and are thus a critical component of innate immune defense. Understanding the behavior of neutrophils as they act within various inflammatory contexts has provided insights into their role in sterile and infectious diseases; however, the field of neutrophils in cancer is comparatively young. Here, we summarize key concepts and current knowledge gaps related to the diverse roles of neutrophils throughout cancer progression. We discuss sources of neutrophil heterogeneity in cancer and provide recommendations on nomenclature for neutrophil states that are distinct in maturation and activation. We address discrepancies in the literature that highlight a need for technical standards that ought to be considered between laboratories. Finally, we review emerging questions in neutrophil biology and innate immunity in cancer. Overall, we emphasize that neutrophils are a more diverse population than previously appreciated and that their role in cancer may present novel unexplored opportunities to treat cancer.
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Affiliation(s)
- Daniela F. Quail
- Rosalind and Morris Goodman Cancer Institute, Department of Physiology, McGill University, Montreal, Quebec, Canada
| | - Borko Amulic
- Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Monowar Aziz
- Center for Immunology and Inflammation, Feinstein Institutes for Medical Research, Manhasset, NY
| | - Betsy J. Barnes
- Center for Autoimmune, Musculoskeletal and Hematopoietic Diseases, Feinstein Institutes for Medical Research, Manhasset, NY
- Departments of Molecular Medicine and Pediatrics, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY
| | - Evgeniy Eruslanov
- Division of Thoracic Surgery, Department of Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | - Zvi G. Fridlender
- Hadassah Medical Center, Institute of Pulmonary Medicine, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Helen S. Goodridge
- Board of Governors Regenerative Medicine Institute and Research Division of Immunology, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Zvi Granot
- Department of Developmental Biology and Cancer Research, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Andrés Hidalgo
- Vascular Biology and Therapeutics Program and Department of Immunobiology, Yale University School of Medicine, New Haven, CT
- Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
| | - Anna Huttenlocher
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI
| | - Mariana J. Kaplan
- Systemic Autoimmunity Branch, Intramural Research Program, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD
| | - Ilaria Malanchi
- Tumour-Host Interaction Laboratory, The Francis Crick Institute, London, UK
| | - Taha Merghoub
- Ludwig Collaborative and Swim Across America Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY
- Parker Institute for Cancer Immunotherapy, Memorial Sloan Kettering Cancer Center, New York, NY
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
- Weill Cornell Medical College, New York, NY
| | - Etienne Meylan
- Lung Cancer and Immuno-Oncology Laboratory, Bordet Cancer Research Laboratories, Institut Jules Bordet, Université Libre de Bruxelles, Anderlecht, Belgium
- Laboratory of Immunobiology, Université Libre de Bruxelles, Gosselies, Belgium
| | - Vivek Mittal
- Department of Cardiothoracic Surgery, Neuberger Berman Foundation Lung Cancer Research Center, Weill Cornell Medicine, New York, NY
- Department of Cell and Developmental Biology, Weill Cornell Medicine, New York, NY
| | - Mikael J. Pittet
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
- Ludwig Institute for Cancer Research, Lausanne Branch, Lausanne, Switzerland
- Department of Oncology, Geneva University Hospitals, Geneva, Switzerland
- AGORA Cancer Research Center, Lausanne, Switzerland
| | - Andrea Rubio-Ponce
- Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
| | - Irina A. Udalova
- University of Oxford, Kennedy Institute of Rheumatology, Oxford, UK
| | - Timo K. van den Berg
- Laboratory of Immunotherapy, Sanquin Research, Amsterdam, Netherlands
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Center, Amsterdam, Netherlands
| | - Denisa D. Wagner
- Program in Cellular and Molecular Medicine, Division of Hematology/Oncology, Boston Children’s Hospital and Harvard Medical School, Boston, MA
| | - Ping Wang
- Center for Immunology and Inflammation, Feinstein Institutes for Medical Research, Manhasset, NY
| | - Arturo Zychlinsky
- Department of Cellular Microbiology, Max Planck Institute for Infection Biology, Berlin, Germany
| | - Karin E. de Visser
- Division of Tumour Biology and Immunology, Oncode Institute, Netherlands Cancer Institute, Amsterdam, Netherlands
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre, Leiden, Netherlands
- Banbury Center meeting organizers, Diverse Functions of Neutrophils in Cancer, Cold Spring Harbor Laboratory, New York, NY
| | - Mikala Egeblad
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY
- Banbury Center meeting organizers, Diverse Functions of Neutrophils in Cancer, Cold Spring Harbor Laboratory, New York, NY
| | - Paul Kubes
- Department of Pharmacology and Physiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Banbury Center meeting organizers, Diverse Functions of Neutrophils in Cancer, Cold Spring Harbor Laboratory, New York, NY
- Department of Microbiology, Immunology & Infectious Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
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43
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Choden T, Cohen NA. The gut microbiome and the immune system. EXPLORATION OF MEDICINE 2022. [DOI: 10.37349/emed.2022.00087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The human body contains trillions of microbes which generally live in symbiosis with the host. The interaction of the gut microbiome with elements of the host immune system has far-reaching effects in the development of normal gut and systemic immune responses. Disturbances to this intricate relationship may be responsible for a multitude of gastrointestinal and systemic immune mediated diseases. This review describes the development of the gut microbiome and its interaction with host immune cells in both health and disease states.
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Affiliation(s)
- Tenzin Choden
- Section of Gastroenterology, Hepatology and Nutrition, University of Chicago Medicine, Chicago, IL 60637, USA
| | - Nathaniel Aviv Cohen
- Section of Gastroenterology, Hepatology and Nutrition, University of Chicago Medicine, Chicago, IL 60637, USA; Inflammatory Bowel Disease Center, Department of Gastroenterology and Liver Diseases, Tel Aviv Medical Center, Tel Aviv 6423906, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
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Tan Q, Ma X, Yang B, Liu Y, Xie Y, Wang X, Yuan W, Ma J. Periodontitis pathogen Porphyromonas gingivalis promotes pancreatic tumorigenesis via neutrophil elastase from tumor-associated neutrophils. Gut Microbes 2022; 14:2073785. [PMID: 35549648 PMCID: PMC9116393 DOI: 10.1080/19490976.2022.2073785] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Intratumor microbiome shapes the immune system and influences the outcome of various tumors. Porphyromonas gingivalis (P. gingivalis), the keystone periodontal pathogen, is highly epidemically connected with pancreatic cancer (PC). However, its causative role and the underlining mechanism in promoting PC oncogenesis remain unclear. Here, we illustrated the landscape of intratumor microbiome and its bacterial correlation with oral cavity in PC patients, where P. gingivalis presented both in the oral cavity and tumor tissues. When exposed to P. gingivalis, tumor development was accelerated in orthotopic and subcutaneous PC mouse model, and the cancerous pancreas exhibited a neutrophils-dominated proinflammatory tumor microenvironment. Mechanistically, the intratumoral P. gingivalis promoted PC progression via elevating the secretion of neutrophilic chemokines and neutrophil elastase (NE). Collectively, our study disclosed the bacterial link between periodontitis and PC, and revealed a previously unrecognized mechanism of P. gingivalis in PC pathophysiology, hinting at therapeutic implications.
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Affiliation(s)
- Qin Tan
- Center of Biotherapy, Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Xiao Ma
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P.R. China,Department of Clinical Laboratory, Beijing Friendship Hospital, Capital Medical University, Beijing, P.R. China
| | - Bing Yang
- Center of Biotherapy, Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Ye Liu
- The Key Laboratory of Geriatrics, Beijing Institution of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Yibin Xie
- Department of Pancreatic and Gastric Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, P.R. China
| | - Xijun Wang
- Center of Biotherapy, Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Wei Yuan
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, P.R. China,Wei Yuan State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, P.R. China
| | - Jie Ma
- Center of Biotherapy, Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, P.R. China,CONTACT Jie Ma Center of Biotherapy, Beijing Hospital, National Center of Gerontology; Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing100730, P.R. China
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Adapen C, Réot L, Nunez N, Cannou C, Marlin R, Lemaître J, d'Agata L, Gilson E, Ginoux E, Le Grand R, Nugeyre MT, Menu E. Local Innate Markers and Vaginal Microbiota Composition Are Influenced by Hormonal Cycle Phases. Front Immunol 2022; 13:841723. [PMID: 35401577 PMCID: PMC8990777 DOI: 10.3389/fimmu.2022.841723] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 02/28/2022] [Indexed: 12/12/2022] Open
Abstract
Background The female reproductive tract (FRT) mucosa is the first line of defense against sexually transmitted infection (STI). FRT environmental factors, including immune-cell composition and the vaginal microbiota, interact with each other to modulate susceptibility to STIs. Moreover, the menstrual cycle induces important modifications within the FRT mucosa. Cynomolgus macaques are used as a model for the pathogenesis and prophylaxis of STIs. In addition, their menstrual cycle and FRT morphology are similar to women. The cynomolgus macaque vaginal microbiota is highly diverse and similar to dysbiotic vaginal microbiota observed in women. However, the impact of the menstrual cycle on immune markers and the vaginal microbiota in female cynomolgus macaques is unknown. We conducted a longitudinal study covering three menstrual cycles in cynomolgus macaques. The evolution of the composition of the vaginal microbiota and inflammation (cytokine/chemokine profile and neutrophil phenotype) in the FRT and blood was determined throughout the menstrual cycle. Results Cervicovaginal cytokine/chemokine concentrations were affected by the menstrual cycle, with a peak of production during menstruation. We observed three main cervicovaginal neutrophil subpopulations: CD11bhigh CD101+ CD10+ CD32a+, CD11bhigh CD101+ CD10- CD32a+, and CD11blow CD101low CD10- CD32a-, of which the proportion varied during the menstrual cycle. During menstruation, there was an increase in the CD11bhigh CD101+ CD10+ CD32a+ subset of neutrophils, which expressed higher levels of CD62L. Various bacterial taxa in the vaginal microbiota showed differential abundance depending on the phase of the menstrual cycle. Compilation of the factors that vary according to hormonal phase showed the clustering of samples collected during menstruation, characterized by a high concentration of cytokines and an elevated abundance of the CD11bhigh CD101+ CD10+ CD32a+ CD62L+ neutrophil subpopulation. Conclusions We show a significant impact of menstruation on the local environment (cytokine production, neutrophil phenotype, and vaginal microbiota composition) in female cynomolgus macaques. Menstruation triggers increased production of cytokines, shift of the vaginal microbiota composition and the recruitment of mature/activated neutrophils from the blood to the FRT. These results support the need to monitor the menstrual cycle and a longitudinal sampling schedule for further studies in female animals and/or women focusing on the mucosal FRT environment.
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Affiliation(s)
- Cindy Adapen
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France
| | - Louis Réot
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France
| | | | - Claude Cannou
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France.,Mucosal Immunity and Sexually Transmitted Infection Control (MISTIC) Group, Department of Virology, Institut Pasteur, Paris, France
| | - Romain Marlin
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France
| | - Julien Lemaître
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France
| | | | | | | | - Roger Le Grand
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France
| | - Marie-Thérèse Nugeyre
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France.,Mucosal Immunity and Sexually Transmitted Infection Control (MISTIC) Group, Department of Virology, Institut Pasteur, Paris, France
| | - Elisabeth Menu
- Université Paris-Saclay, Inserm, Commissariat à l'énergie Atomique et aux énergies Alternatives (CEA), Center for Immunology of Viral, Auto-Immune, Hematological and Bacterial Diseases [IMVA-HB/Infectious Disease Models and Innovative Therapies (IDMIT)], Fontenay-aux-Roses, France.,Mucosal Immunity and Sexually Transmitted Infection Control (MISTIC) Group, Department of Virology, Institut Pasteur, Paris, France
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Gonzalez CG, Mills RH, Kordahi MC, Carrillo-Terrazas M, Secaira-Morocho H, Widjaja CE, Tsai MS, Mittal Y, Yee BA, Vargas F, Weldon K, Gauglitz JM, Delaroque C, Sauceda C, Rossitto LA, Ackermann G, Humphrey G, Swafford AD, Siegel CA, Buckey JC, Raffals LE, Sadler C, Lindholm P, Fisch KM, Valaseck M, Suriawinata A, Yeo GW, Ghosh P, Chang JT, Chu H, Dorrestein P, Zhu Q, Chassaing B, Knight R, Gonzalez DJ, Dulai PS. The Host-Microbiome Response to Hyperbaric Oxygen Therapy in Ulcerative Colitis Patients. Cell Mol Gastroenterol Hepatol 2022; 14:35-53. [PMID: 35378331 PMCID: PMC9117812 DOI: 10.1016/j.jcmgh.2022.03.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIMS Hyperbaric oxygen therapy (HBOT) is a promising treatment for moderate-to-severe ulcerative colitis. However, our current understanding of the host and microbial response to HBOT remains unclear. This study examined the molecular mechanisms underpinning HBOT using a multi-omic strategy. METHODS Pre- and post-intervention mucosal biopsies, tissue, and fecal samples were collected from HBOT phase 2 clinical trials. Biopsies and fecal samples were subjected to shotgun metaproteomics, metabolomics, 16s rRNA sequencing, and metagenomics. Tissue was subjected to bulk RNA sequencing and digital spatial profiling (DSP) for single-cell RNA and protein analysis, and immunohistochemistry was performed. Fecal samples were also used for colonization experiments in IL10-/- germ-free UC mouse models. RESULTS Proteomics identified negative associations between HBOT response and neutrophil azurophilic granule abundance. DSP identified an HBOT-specific reduction of neutrophil STAT3, which was confirmed by immunohistochemistry. HBOT decreased microbial diversity with a proportional increase in Firmicutes and a secondary bile acid lithocholic acid. A major source of the reduction in diversity was the loss of mucus-adherent taxa, resulting in increased MUC2 levels post-HBOT. Targeted database searching revealed strain-level associations between Akkermansia muciniphila and HBOT response status. Colonization of IL10-/- with stool obtained from HBOT responders resulted in lower colitis activity compared with non-responders, with no differences in STAT3 expression, suggesting complementary but independent host and microbial responses. CONCLUSIONS HBOT reduces host neutrophil STAT3 and azurophilic granule activity in UC patients and changes in microbial composition and metabolism in ways that improve colitis activity. Intestinal microbiota, especially strain level variations in A muciniphila, may contribute to HBOT non-response.
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Key Words
- bclxl, b-cell lymphoma-extra large
- bim, bcl-2 interacting protein
- dsp, digital spatial profiling
- fdr, false discovery rate
- hbot, hyperbaric oxygen therapy
- hif, hypoxia inducible factor
- il, interleukin
- lca, lithocholic acid
- mapk, mitogen-activated protein kinase
- ms, mass spectrometry
- nlrp3, nod-, lrr- and pyrin domain-containing protein 3
- roi, regions of interest
- ros, reactive oxygen species
- stat3, signal transducer and activator of transcription 3
- tmt, tandem mass tag
- uc, ulcerative colitis
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Affiliation(s)
- Carlos G Gonzalez
- Department of Pharmacology, University of California, San Diego, California; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California; Department of Pediatrics, University of California, San Diego, California
| | - Robert H Mills
- Department of Pharmacology, University of California, San Diego, California; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California; Department of Pediatrics, University of California, San Diego, California
| | - Melissa C Kordahi
- INSERM U1016, team "Mucosal microbiota in chronic inflammatory diseases", CNRS UMR 8104, Université de Paris, Paris, France
| | - Marvic Carrillo-Terrazas
- Department of Pharmacology, University of California, San Diego, California; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California
| | - Henry Secaira-Morocho
- School of Life Sciences, Arizona State University, Tempe, Arizona; Biodesign Center for Fundamental and Applied Microbiomics, Arizona State University, Tempe, Arizona
| | - Christella E Widjaja
- Division of Gastroenterology, University of California San Diego, San Diego, California
| | - Matthew S Tsai
- Division of Gastroenterology, University of California San Diego, San Diego, California
| | - Yash Mittal
- Division of Gastroenterology, University of California San Diego, San Diego, California
| | - Brian A Yee
- Department of Cellular and Molecular Medicine, University of California San Diego, San Diego, California; Institute for Genomic Medicine, University of California San Diego, San Diego, California
| | - Fernando Vargas
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California
| | - Kelly Weldon
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California; Department of Computer Science and Engineering, University of California San Diego, San Diego, California
| | - Julia M Gauglitz
- Department of Pediatrics, University of California, San Diego, California
| | - Clara Delaroque
- INSERM U1016, team "Mucosal microbiota in chronic inflammatory diseases", CNRS UMR 8104, Université de Paris, Paris, France
| | - Consuelo Sauceda
- Department of Pharmacology, University of California, San Diego, California
| | - Leigh-Ana Rossitto
- Department of Pharmacology, University of California, San Diego, California
| | - Gail Ackermann
- Department of Pediatrics, University of California, San Diego, California
| | - Gregory Humphrey
- Department of Pediatrics, University of California, San Diego, California
| | - Austin D Swafford
- Department of Computer Science and Engineering, University of California San Diego, San Diego, California
| | - Corey A Siegel
- Section of Gastroenterology and Hepatology, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
| | - Jay C Buckey
- Center for Hyperbaric Medicine, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
| | - Laura E Raffals
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Charlotte Sadler
- Division of Hyperbaric Medicine, Department of Emergency Medicine, University of California San Diego, San Diego, California
| | - Peter Lindholm
- Division of Hyperbaric Medicine, Department of Emergency Medicine, University of California San Diego, San Diego, California
| | - Kathleen M Fisch
- Center for Computational Biology and Bioinformatics, University of California San Diego, San Diego, California
| | - Mark Valaseck
- Department of Pathology, University of California San Diego, San Diego, California
| | - Arief Suriawinata
- Section of Gastroenterology and Hepatology, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
| | - Gene W Yeo
- Department of Cellular and Molecular Medicine, University of California San Diego, San Diego, California; Institute for Genomic Medicine, University of California San Diego, San Diego, California
| | - Pradipta Ghosh
- Division of Gastroenterology, University of California San Diego, San Diego, California; Department of Cellular and Molecular Medicine, University of California San Diego, San Diego, California
| | - John T Chang
- Division of Gastroenterology, University of California San Diego, San Diego, California
| | - Hiutung Chu
- Department of Pathology, University of California San Diego, San Diego, California; Center for Microbiome Innovation, University of California San Diego, San Diego, California; Chiba University-UC San Diego Center for Mucosal Immunology, Allergy and Vaccines (cMAV), University of California, San Diego, La Jolla, California
| | - Pieter Dorrestein
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California; Department of Pediatrics, University of California, San Diego, California; Center for Microbiome Innovation, University of California San Diego, San Diego, California
| | - Qiyun Zhu
- School of Life Sciences, Arizona State University, Tempe, Arizona; Biodesign Center for Fundamental and Applied Microbiomics, Arizona State University, Tempe, Arizona
| | - Benoit Chassaing
- INSERM U1016, team "Mucosal microbiota in chronic inflammatory diseases", CNRS UMR 8104, Université de Paris, Paris, France
| | - Rob Knight
- Department of Computer Science and Engineering, University of California San Diego, San Diego, California; Department of Pediatrics, University of California, San Diego, California; Center for Microbiome Innovation, University of California San Diego, San Diego, California
| | - David J Gonzalez
- Department of Pharmacology, University of California, San Diego, California; Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California; Center for Microbiome Innovation, University of California San Diego, San Diego, California
| | - Parambir S Dulai
- Division of Gastroenterology, University of California San Diego, San Diego, California; Division of Gastroenterology, Northwestern University, Chicago, Illinois.
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Tesei D, Jewczynko A, Lynch AM, Urbaniak C. Understanding the Complexities and Changes of the Astronaut Microbiome for Successful Long-Duration Space Missions. Life (Basel) 2022; 12:life12040495. [PMID: 35454986 PMCID: PMC9031868 DOI: 10.3390/life12040495] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/17/2022] [Accepted: 03/24/2022] [Indexed: 12/12/2022] Open
Abstract
During space missions, astronauts are faced with a variety of challenges that are unique to spaceflight and that have been known to cause physiological changes in humans over a period of time. Several of these changes occur at the microbiome level, a complex ensemble of microbial communities residing in various anatomic sites of the human body, with a pivotal role in regulating the health and behavior of the host. The microbiome is essential for day-to-day physiological activities, and alterations in microbiome composition and function have been linked to various human diseases. For these reasons, understanding the impact of spaceflight and space conditions on the microbiome of astronauts is important to assess significant health risks that can emerge during long-term missions and to develop countermeasures. Here, we review various conditions that are caused by long-term space exploration and discuss the role of the microbiome in promoting or ameliorating these conditions, as well as space-related factors that impact microbiome composition. The topics explored pertain to microgravity, radiation, immunity, bone health, cognitive function, gender differences and pharmacomicrobiomics. Connections are made between the trifecta of spaceflight, the host and the microbiome, and the significance of these interactions for successful long-term space missions.
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Affiliation(s)
- Donatella Tesei
- Department of Biotechnology, University of Natural Resources and Life Sciences, 1190 Vienna, Austria;
| | - Anna Jewczynko
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada;
| | - Anne M. Lynch
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
- Graduate Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Camilla Urbaniak
- ZIN Technologies Inc., Middleburg Heights, OH 44130, USA
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
- Correspondence:
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Bairamian D, Sha S, Rolhion N, Sokol H, Dorothée G, Lemere CA, Krantic S. Microbiota in neuroinflammation and synaptic dysfunction: a focus on Alzheimer’s disease. Mol Neurodegener 2022; 17:19. [PMID: 35248147 PMCID: PMC8898063 DOI: 10.1186/s13024-022-00522-2] [Citation(s) in RCA: 88] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 02/15/2022] [Indexed: 12/15/2022] Open
Abstract
Abstract
Background
The implication of gut microbiota in the control of brain functions in health and disease is a novel, currently emerging concept. Accumulating data suggest that the gut microbiota exert its action at least in part by modulating neuroinflammation. Given the link between neuroinflammatory changes and neuronal activity, it is plausible that gut microbiota may affect neuronal functions indirectly by impacting microglia, a key player in neuroinflammation. Indeed, increasing evidence suggests that interplay between microglia and synaptic dysfunction may involve microbiota, among other factors. In addition to these indirect microglia-dependent actions of microbiota on neuronal activity, it has been recently recognized that microbiota could also affect neuronal activity directly by stimulation of the vagus nerve.
Main messages
The putative mechanisms of the indirect and direct impact of microbiota on neuronal activity are discussed by focusing on Alzheimer’s disease, one of the most studied neurodegenerative disorders and the prime cause of dementia worldwide. More specifically, the mechanisms of microbiota-mediated microglial alterations are discussed in the context of the peripheral and central inflammation cross-talk. Next, we highlight the role of microbiota in the regulation of humoral mediators of peripheral immunity and their impact on vagus nerve stimulation. Finally, we address whether and how microbiota perturbations could affect synaptic neurotransmission and downstream cognitive dysfunction.
Conclusions
There is strong increasing evidence supporting a role for the gut microbiome in the pathogenesis of Alzheimer’s disease, including effects on synaptic dysfunction and neuroinflammation, which contribute to cognitive decline. Putative early intervention strategies based on microbiota modulation appear therapeutically promising for Alzheimer’s disease but still require further investigation.
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Abstract
Neutrophils are the most abundant myeloid cells in human blood and are emerging as important regulators of cancer. However, their functional importance has often been overlooked on the basis that they are short-lived, terminally differentiated and non-proliferative. Recent studies of their prominent roles in cancer have led to a paradigm shift in our appreciation of neutrophil functional diversity. This Review describes how neutrophil diversification, which in some contexts can lead to opposing functions, is generated within the tumour microenvironment as well as systemically. We compare neutrophil heterogeneity in cancer and in other pathophysiological contexts to provide an updated overview of our current knowledge of the functions of neutrophils in cancer.
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Gut Microbiota-Derived Small Extracellular Vesicles Endorse Memory-like Inflammatory Responses in Murine Neutrophils. Biomedicines 2022; 10:biomedicines10020442. [PMID: 35203650 PMCID: PMC8962420 DOI: 10.3390/biomedicines10020442] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 02/08/2022] [Accepted: 02/10/2022] [Indexed: 12/12/2022] Open
Abstract
Neutrophils are classically characterized as merely reactive innate effector cells. However, the microbiome is known to shape the education and maturation process of neutrophils, improving their function and immune-plasticity. Recent reports demonstrate that murine neutrophils possess the ability to exert adaptive responses after exposure to bacterial components such as LPS (Gram-negative bacteria) or LTA (Gram-positive bacteria). We now ask whether small extracellular vesicles (EVs) from the gut may directly mediate adaptive responses in neutrophils in vitro. Murine bone marrow-derived neutrophils were primed in vitro by small EVs of high purity collected from colon stool samples, followed by a second hit with LPS. We found that low-dose priming with gut microbiota-derived small EVs enhanced pro-inflammatory sensitivity as indicated by elevated levels of TNF-α, IL-6, ROS and MCP-1 and increased migratory and phagocytic activity. In contrast, high-dose priming resulted in a tolerant phenotype, marked by increased IL-10 and decreased transmigration and phagocytosis. Alterations in TLR2/MyD88 as well as TLR4/MyD88 signaling were correlated with the induction of adaptive cues in neutrophils in vitro. Taken together, our study shows that small EVs from stools can drive adaptive responses in neutrophils in vitro and may represent a missing link in the gut–immune axis.
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