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White Z, Cabrera I, Kapustka I, Sano T. Microbiota as key factors in inflammatory bowel disease. Front Microbiol 2023; 14:1155388. [PMID: 37901813 PMCID: PMC10611514 DOI: 10.3389/fmicb.2023.1155388] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 09/07/2023] [Indexed: 10/31/2023] Open
Abstract
Inflammatory Bowel Disease (IBD) is characterized by prolonged inflammation of the gastrointestinal tract, which is thought to occur due to dysregulation of the immune system allowing the host's cells to attack the GI tract and cause chronic inflammation. IBD can be caused by numerous factors such as genetics, gut microbiota, and environmental influences. In recent years, emphasis on commensal bacteria as a critical player in IBD has been at the forefront of new research. Each individual harbors a unique bacterial community that is influenced by diet, environment, and sanitary conditions. Importantly, it has been shown that there is a complex relationship among the microbiome, activation of the immune system, and autoimmune disorders. Studies have shown that not only does the microbiome possess pathogenic roles in the progression of IBD, but it can also play a protective role in mediating tissue damage. Therefore, to improve current IBD treatments, understanding not only the role of harmful bacteria but also the beneficial bacteria could lead to attractive new drug targets. Due to the considerable diversity of the microbiome, it has been challenging to characterize how particular microorganisms interact with the host and other microbiota. Fortunately, with the emergence of next-generation sequencing and the increased prevalence of germ-free animal models there has been significant advancement in microbiome studies. By utilizing human IBD studies and IBD mouse models focused on intraepithelial lymphocytes and innate lymphoid cells, this review will explore the multifaceted roles the microbiota plays in influencing the immune system in IBD.
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Affiliation(s)
| | | | | | - Teruyuki Sano
- Department of Microbiology and Immunology, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States
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2
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Peng J, Siracusa MC. Basophils in antihelminth immunity. Semin Immunol 2021; 53:101529. [PMID: 34815162 PMCID: PMC8715908 DOI: 10.1016/j.smim.2021.101529] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 11/09/2021] [Accepted: 11/10/2021] [Indexed: 12/15/2022]
Abstract
It has been appreciated that basophilia is a common feature of helminth infections for approximately 50 years. The ability of basophils to secrete IL-4 and other type 2 cytokines has supported the prevailing notion that basophils contribute to antihelminth immunity by promoting optimal type 2 T helper (Th2) cell responses. While this appears to be the case in several helminth infections, emerging studies are also revealing that the effector functions of basophils are extremely diverse and parasite-specific. Further, new reports now suggest that basophils can restrict type 2 inflammation in a manner that preserves the integrity of helminth-affected tissue. Finally, exciting data has also demonstrated that basophils can regulate inflammation by participating in neuro-immune interactions. This article will review the current state of basophil biology and describe how recent studies are transforming our understanding of the role basophils play in the context of helminth infections.
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Affiliation(s)
- Jianya Peng
- Center for Immunity and Inflammation, New Jersey Medical School, Rutgers-The State University of New Jersey, Newark, NJ, USA; Department of Medicine, New Jersey Medical School, Rutgers-The State University of New Jersey, Newark, NJ, USA
| | - Mark C Siracusa
- Center for Immunity and Inflammation, New Jersey Medical School, Rutgers-The State University of New Jersey, Newark, NJ, USA; Department of Medicine, New Jersey Medical School, Rutgers-The State University of New Jersey, Newark, NJ, USA.
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Vivanco Gonzalez N, Oliveria JP, Tebaykin D, Ivison GT, Mukai K, Tsai MM, Borges L, Nadeau KC, Galli SJ, Tsai AG, Bendall SC. Mass Cytometry Phenotyping of Human Granulocytes Reveals Novel Basophil Functional Heterogeneity. iScience 2020; 23:101724. [PMID: 33205028 PMCID: PMC7653073 DOI: 10.1016/j.isci.2020.101724] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 08/18/2020] [Accepted: 10/20/2020] [Indexed: 02/06/2023] Open
Abstract
Basophils, the rarest granulocyte, play critical roles in parasite- and allergen-induced inflammation. We applied mass cytometry (CyTOF) to simultaneously asses 44 proteins to phenotype and functionally characterize neutrophils, eosinophils, and basophils from 19 healthy donors. There was minimal heterogeneity seen in eosinophils and neutrophils, but data-driven analyses revealed four unique subpopulations within phenotypically basophilic granulocytes (PBG; CD45+HLA-DR-CD123+). Through CyTOF and fluorescence-activated cell sorting (FACS), we classified these four PBG subpopulations as (I) CD16lowFcεRIhighCD244high (88.5 ± 1.2%), (II) CD16highFcεRIhighCD244high (9.1 ± 0.4%), (III) CD16lowFcεRIlowCD244low (2.3 ± 1.3), and (IV) CD16highFcεRIlowCD244low (0.4 ± 0.1%). Prospective isolation confirmed basophilic-morphology of PBG I-III, but neutrophilic-morphology of PBG IV. Functional interrogation via IgE-crosslinking or IL-3 stimulation demonstrated that PBG I-II had significant increases in CD203c expression, whereas PBG III-IV remained unchanged compared with media-alone conditions. Thus, PBG III-IV could serve roles in non-IgE-mediated immunity. Our findings offer new perspectives in human basophil heterogeneity and the varying functional potential of these new subsets in health and disease.
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Affiliation(s)
- Nora Vivanco Gonzalez
- Department of Pathology, School of Medicine, Stanford University, Stanford Blood Center, 3373 Hillview Avenue Room 230A, Palo Alto, CA 94305, USA
| | - John-Paul Oliveria
- Department of Pathology, School of Medicine, Stanford University, Stanford Blood Center, 3373 Hillview Avenue Room 230A, Palo Alto, CA 94305, USA
- Department of Medicine, Division of Respirology, McMaster University, Hamilton, ON, L8S4K1, Canada
| | - Dmitry Tebaykin
- Department of Pathology, School of Medicine, Stanford University, Stanford Blood Center, 3373 Hillview Avenue Room 230A, Palo Alto, CA 94305, USA
| | - Geoffrey T. Ivison
- Department of Pathology, School of Medicine, Stanford University, Stanford Blood Center, 3373 Hillview Avenue Room 230A, Palo Alto, CA 94305, USA
| | - Kaori Mukai
- Department of Pathology, School of Medicine, Stanford University, Stanford Blood Center, 3373 Hillview Avenue Room 230A, Palo Alto, CA 94305, USA
- Sean N. Parker Center for Allergy Research, School of Medicine, Stanford University, Palo Alto, CA 94305, USA
| | - Mindy M. Tsai
- Department of Pathology, School of Medicine, Stanford University, Stanford Blood Center, 3373 Hillview Avenue Room 230A, Palo Alto, CA 94305, USA
- Sean N. Parker Center for Allergy Research, School of Medicine, Stanford University, Palo Alto, CA 94305, USA
| | - Luciene Borges
- Department of Pathology, School of Medicine, Stanford University, Stanford Blood Center, 3373 Hillview Avenue Room 230A, Palo Alto, CA 94305, USA
| | - Kari C. Nadeau
- Sean N. Parker Center for Allergy Research, School of Medicine, Stanford University, Palo Alto, CA 94305, USA
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, School of Medicine, Stanford University, Palo Alto, CA 94305, USA
| | - Stephen J. Galli
- Department of Pathology, School of Medicine, Stanford University, Stanford Blood Center, 3373 Hillview Avenue Room 230A, Palo Alto, CA 94305, USA
- Sean N. Parker Center for Allergy Research, School of Medicine, Stanford University, Palo Alto, CA 94305, USA
- Department of Microbiology and Immunology, School of Medicine, Stanford University, Palo Alto, CA 94305, USA
| | - Albert G. Tsai
- Department of Pathology, School of Medicine, Stanford University, Stanford Blood Center, 3373 Hillview Avenue Room 230A, Palo Alto, CA 94305, USA
| | - Sean C. Bendall
- Department of Pathology, School of Medicine, Stanford University, Stanford Blood Center, 3373 Hillview Avenue Room 230A, Palo Alto, CA 94305, USA
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Bryant AH, Spencer-Harty S, Owens SE, Jones RH, Thornton CA. Interleukin 4 and interleukin 13 downregulate the lipopolysaccharide-mediated inflammatory response by human gestation-associated tissues. Biol Reprod 2017; 96:576-586. [PMID: 28203703 DOI: 10.1095/biolreprod.116.145680] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 12/20/2016] [Accepted: 01/17/2017] [Indexed: 11/01/2022] Open
Abstract
Inflammation is a key feature of preterm and term labor. Proinflammatory mediators are produced by gestation-associated tissues in response to pathogen-associated molecular patterns and damage-associated molecular patterns. Interleukin (IL)4, IL10, and IL13 are anti-inflammatory cytokines with potential as anti-inflammatory therapies to prevent preterm birth. The objective of this study was to determine if IL4 and IL13 exert anti-inflammatory effects on lipopolysaccharide (LPS)-stimulated production of proinflammatory cytokines produced by human term gestation-associated tissues (placenta, choriodecidua, and amnion). Both IL4 and IL13 reduced LPS-stimulated IL1B and macrophage inflammatory protein1A; this effect diminished with delay to exposure to either cytokine. There was no effect on LPS-stimulated prostaglandin production. Interleukin 4 receptor alpha (IL4RA) was expressed throughout the placenta, choriodecidua, and amnion, and the inhibitory effects of IL4 and IL13 were IL4RA dependent. Combined IL4 and IL13 did not enhance the anti-inflammatory potential of either cytokine; however, a combination of IL4 and IL10 had a greater anti-inflammatory effect than either cytokine alone. These findings demonstrate that human term gestation-associated tissues are responsive to the anti-inflammatory cytokines IL4 and IL13, which could downregulate LPS-induced cytokine production in these tissues. Anti-inflammatory cytokines might offer an adjunct to existing therapeutics to prevent adverse obstetric outcome.
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Affiliation(s)
- Aled H Bryant
- Institute of Life Science, Swansea University Medical School, Swansea, UK
| | - Samantha Spencer-Harty
- Histopathology Department, Abertawe Bro Morgannwg University Health Board, Swansea, Wales, UK
| | - Siân-Eleri Owens
- Institute of Life Science, Swansea University Medical School, Swansea, UK
| | - Ruth H Jones
- Institute of Life Science, Swansea University Medical School, Swansea, UK
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