351
|
Cho K, Spasova D, Hong SW, O E, Surh CD, Im SH, Kim KS. Listeria monocytogenes Establishes Commensalism in Germ-Free Mice Through the Reversible Downregulation of Virulence Gene Expression. Front Immunol 2021; 12:666088. [PMID: 34012449 PMCID: PMC8126713 DOI: 10.3389/fimmu.2021.666088] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/19/2021] [Indexed: 11/26/2022] Open
Abstract
The intestine harbors a complex community of bacterial species collectively known as commensal microbiota. Specific species of resident bacteria, as known as pathobiont, have pathogenic potential and can induce apparent damage to the host and intestinal inflammation in a certain condition. However, the host immune factors that permit its commensalism under steady state conditions are not clearly understood. Here, we studied the gut fitness of Listeria monocytogenes by using germ-free (GF) mice orally infected with this food-borne pathogen. L. monocytogenes persistently exists in the gut of GF mice without inducing chronic immunopathology. L. monocytogenes at the late phase of infection is not capable of infiltrating through the intestinal barrier. L. monocytogenes established the commensalism through the reversible down regulation of virulence gene expression. CD8+ T cells were found to be sufficient for the commensalism of L. monocytogenes. CD8+ T cells responding to L. monocytogenes contributed to the down-regulation of virulence gene expression. Our data provide important insights into the host-microbe interaction and have implications for developing therapeutics against immune disorders induced by intestinal pathogens or pathobionts.
Collapse
Affiliation(s)
- Kyungjin Cho
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
| | - Darina Spasova
- Division of Developmental Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States
| | - Sung-Wook Hong
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
| | - Eunju O
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
| | - Charles D Surh
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, South Korea.,Division of Developmental Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States
| | - Sin-Hyeog Im
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
| | - Kwang Soon Kim
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
| |
Collapse
|
352
|
Guo CE, Cui Q, Cheng J, Chen J, Zhao Z, Guo R, Dai X, Wei Z, Li W. Probiotic-fermented Chinese dwarf cherry [Cerasus humilis (Bge.) Sok.] juice modulates the intestinal mucosal barrier and increases the abundance of Akkermansia in the gut in association with polyphenols. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104424] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
|
353
|
Wang S, Wu K, Xue D, Zhang C, Rajput SA, Qi D. Mechanism of deoxynivalenol mediated gastrointestinal toxicity: Insights from mitochondrial dysfunction. Food Chem Toxicol 2021; 153:112214. [PMID: 33930483 DOI: 10.1016/j.fct.2021.112214] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/21/2021] [Accepted: 04/10/2021] [Indexed: 12/12/2022]
Abstract
Deoxynivalenol (DON) is a mycotoxin predominantly produced by Fusarium genus, and widely contaminates cereals and associated products all over the world. The intestinal toxicity of DON is well established. However, intestinal homeostasis involves mitochondria, which has rarely been considered in the context of DON exposure. We summarize the recent knowledge on mitochondria as a key player in maintaining intestinal homeostasis based on their functions in cellular energy metabolism, redox homeostasis, apoptosis, intestinal immune responses, and orchestrated bidirectional cross-talk with gut microbe. In addition, we discuss the pivotal roles of mitochondrial dysfunction in the intestinal toxicity of DON and highlight promising mitochondrial-targeted therapeutics for DON-induced intestinal injury. Recent studies support that the intestinal toxicity of DON is attributed to mitochondrial dysfunction as a critical factor. Mitochondrial dysfunction characterized by failure in respiratory capacities and ROS overproduction has been demonstrated in intestinal cells exposed to DON. Perturbation of mitochondrial respiration leading to ROS accumulation is implicated in the early initiation of apoptosis. DON-induced intestinal inflammatory response is tightly linked to the mitochondrial ROS, whereas immunosuppression is intimately associated with mitophagy inhibition. DON perturbs the orchestrated bidirectional cross-talk between gut microbe and host mitochondria, which may be involved in DON-induced intestinal toxicity.
Collapse
Affiliation(s)
- Shuai Wang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
| | - Kuntan Wu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
| | - Dongfang Xue
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
| | - Cong Zhang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
| | - Shahid Ali Rajput
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
| | - Desheng Qi
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
| |
Collapse
|
354
|
Abstract
There is a growing interest in understanding tissue organization, homeostasis, and inflammation. However, despite an abundance of data, the organizing principles of tissue biology remain poorly defined. Here, we present a perspective on tissue organization based on the relationships between cell types and the functions that they perform. We provide a formal definition of tissue homeostasis as a collection of circuits that regulate specific variables within the tissue environment, and we describe how the functional organization of tissues allows for the maintenance of both tissue and systemic homeostasis. This leads to a natural definition of inflammation as a response to deviations from homeostasis that cannot be reversed by homeostatic mechanisms alone. We describe how inflammatory signals act on the same cellular functions involved in normal tissue organization and homeostasis in order to coordinate emergency responses to perturbations and ultimately return the system to a homeostatic state. Finally, we consider the hierarchy of homeostatic and inflammatory circuits and the implications for the development of inflammatory diseases.
Collapse
Affiliation(s)
- Matthew L. Meizlish
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Ruth A. Franklin
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06510, USA
- Current affiliation: Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Xu Zhou
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06510, USA
- Current affiliation: Division of Gastroenterology, Boston Children's Hospital, Boston, Massachusetts 02115, USA
| | - Ruslan Medzhitov
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06510, USA
- Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| |
Collapse
|
355
|
Effect of Food Endotoxin on Infant Health. Toxins (Basel) 2021; 13:toxins13050298. [PMID: 33922125 PMCID: PMC8143472 DOI: 10.3390/toxins13050298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/12/2021] [Accepted: 04/20/2021] [Indexed: 01/07/2023] Open
Abstract
Endotoxin is a complex molecule derived from the outer membrane of Gram-negative bacteria, and it has strong thermal stability. The processing of infant food can kill pathogenic bacteria but cannot remove endotoxin. Because the intestinal structure of infants is not fully developed, residual endotoxin poses a threat to their health by damaging the intestinal flora and inducing intestinal inflammation, obesity, and sepsis, among others. This paper discusses the sources and contents of endotoxin in infant food and methods for preventing endotoxin from harming infants. However, there is no clear evidence that endotoxin levels in infant food cause significant immune symptoms or even diseases in infants. However, in order to improve the safety level of infant food and reduce the endotoxin content, this issue should not be ignored. The purpose of this review is to provide a theoretical basis for manufacturers and consumers to understand the possible harm of endotoxin content in infant formula milk powder and to explore how to reduce its level in infant formula milk powder. Generally, producers should focus on cleaning the milk source, securing the cold chain, avoiding long-distance transportation, and shortening the storage time of raw milk to reduce the level of bacteria and endotoxin. After production and processing, the endotoxin content should be measured as an important index to test the quality of infant formula milk powder so as to provide high-quality infant products for the healthy growth of newborns.
Collapse
|
356
|
Interleukin-37 regulates innate immune signaling in human and mouse colonic organoids. Sci Rep 2021; 11:8206. [PMID: 33859245 PMCID: PMC8050237 DOI: 10.1038/s41598-021-87592-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 03/25/2021] [Indexed: 12/13/2022] Open
Abstract
Intestinal epithelial cells (IEC) reside in close proximity to the gut microbiota and are hypo-responsive to bacterial products, likely to prevent maladaptive inflammatory responses. This is in part due to their strong expression of Single Ig IL-1 related receptor (SIGIRR), a negative regulator of interleukin (IL)-1 and toll-like receptor signaling. IL-37 is an anti-inflammatory cytokine that inhibits innate signaling in diverse cells by signaling through SIGIRR. Despite the strong expression of SIGIRR by IEC, few studies have examined whether IL-37 can suppress their innate immune signaling. We characterized innate immune responses of human and murine colonoids to bacteria (FliC, LPS) and host (IL-1β) products and the role of IL-37/SIGIRR in regulating these responses. We demonstrated that human colonoids responded only to FliC, but not to LPS or IL-1β. While colonoids derived from different donors displayed significant inter-individual variability in the magnitude of their innate responses to FliC stimulation, all colonoids released a variety of chemokines. Interestingly, IL-37 attenuated these responses through inhibition of p38 and NFκB signaling pathways. We determined that this suppression by IL-37 was SIGIRR dependent, in murine organoids. Along with species-specific differences in IEC innate responses, we show that IL-37 can promote IEC hypo-responsiveness by suppressing inflammatory signaling.
Collapse
|
357
|
Fang J, Wang H, Xue Z, Cheng Y, Zhang X. PPARγ: The Central Mucus Barrier Coordinator in Ulcerative Colitis. Inflamm Bowel Dis 2021; 27:732-741. [PMID: 33772551 DOI: 10.1093/ibd/izaa273] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Indexed: 12/16/2022]
Abstract
Ulcerative colitis (UC) is an idiopathic, long-term inflammatory disorder of the colon, characterized by a continuous remitting and relapsing course. The intestinal mucus barrier is the first line at the interface between the host and microbiota and acts to protect intestinal epithelial cells from invasion. Data from patients and animal studies have shown that an impaired mucus barrier is closely related to the severity of UC. Depletion of the mucus barrier is not just the strongest but is also the only independent risk factor predicting relapse in patients with UC. Peroxisome proliferator-activated receptor gamma (PPARγ), a nuclear transcription regulator, is involved in the regulation of inflammatory cytokine expression. It is also known to promote mucus secretion under pathological conditions to expel pathogenic bacteria or toxins. More important, PPARγ has been shown to affect host-microbiota interactions by modulating the energy metabolism of colonocytes and the oxygen availability of the intestinal microbiome. It is well known that gut microbiota homeostasis is essential for butyrate generation by the commensal bacteria to supply energy resources for colonocytes. Therefore, it can be speculated that PPARγ, as a central coordinator of the mucus barrier, may be a promising target for the development of effective agents to combat UC.
Collapse
Affiliation(s)
- Jian Fang
- Department of Preventive Medicine, Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China.,College of Medicine, Shaoxing University, Shaoxing, Zhejiang Province, People's Republic of China
| | - Hui Wang
- Department of Colorectal Surgery, Shaoxing People's Hospital, Shaoxing, Zhejiang Province, People's Republic of China
| | - Zhe Xue
- Department of Preventive Medicine, Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
| | - Yinyin Cheng
- Department of Preventive Medicine, Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
| | - Xiaohong Zhang
- Department of Preventive Medicine, Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang Province, People's Republic of China
| |
Collapse
|
358
|
The Immunomodulatory Properties of β-2,6 Fructans: A Comprehensive Review. Nutrients 2021; 13:nu13041309. [PMID: 33921025 PMCID: PMC8071392 DOI: 10.3390/nu13041309] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/05/2021] [Accepted: 04/11/2021] [Indexed: 02/07/2023] Open
Abstract
Polysaccharides such as β-2,1-linked fructans including inulin or fructose oligosaccharides are well-known prebiotics with recognised immunomodulatory properties. In recent years, other fructan types covering β-2,6-linked fructans, particularly microbial levans, have gained increasing interest in the field. β-2,6-linked fructans of different degrees of polymerisation can be synthesised by plants or microbes including those that reside in the gastrointestinal tract. Accumulating evidence suggests a role for these β-2,6 fructans in modulating immune function. Here, we provide an overview of the sources and structures of β-2,6 fructans from plants and microbes and describe their ability to modulate immune function in vitro and in vivo along with the suggested mechanisms underpinning their immunomodulatory properties. Further, we discuss the limitations and perspectives pertinent to current studies and the potential applications of β-2,6 fructans including in gut health.
Collapse
|
359
|
Devall MA, Casey G. Controlling for cellular heterogeneity using single-cell deconvolution of gene expression reveals novel markers of colorectal tumors exhibiting microsatellite instability. Oncotarget 2021; 12:767-782. [PMID: 33889300 PMCID: PMC8057268 DOI: 10.18632/oncotarget.27935] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 03/22/2021] [Indexed: 12/15/2022] Open
Abstract
Approximately 15% of colorectal cancer (CRC) cases present with high levels of microsatellite instability (MSI-H). Bulk RNA-sequencing approaches have been employed to elucidate transcriptional differences between MSI-H and microsatellite stable (MSS) CRC tumors. These approaches are frequently confounded by the complex cellular heterogeneity of tumors. We performed single-cell deconvolution of bulk RNA-sequencing on The Cancer Genome Atlas colon adenocarcinoma (TCGA-COAD) dataset. Cell composition within each dataset was estimated using CIBERSORTx. Cell composition differences were analyzed using linear regression. Significant differences in abundance were observed for 13 of 19 cell types between MSI-H and MSS/MSI-L tumors in TCGA-COAD. This included a novel finding of increased enteroendocrine (q = 3.71E-06) and reduced colonocyte populations (q = 2.21E-03) in MSI-H versus MSS/MSI-L tumors. We were able to validate some of these differences in an independent biopsy dataset. By incorporating cell composition into our regression model, we identified 3,193 differentially expressed genes (q = 0.05), of which 556 were deemed novel. We subsequently validated many of these genes in an independent dataset of colon cancer cell lines. In summary, we show that some of the challenges associated with cellular heterogeneity can be overcome using single-cell deconvolution, and through our analysis we highlight several novel gene targets for further investigation.
Collapse
Affiliation(s)
- Matthew A.M. Devall
- Center for Public Health Genomics, Department of Public Health Sciences, University of Virginia, Charlottesville, VA, USA
| | - Graham Casey
- Center for Public Health Genomics, Department of Public Health Sciences, University of Virginia, Charlottesville, VA, USA
| |
Collapse
|
360
|
The OSMR Gene Is Involved in Hirschsprung Associated Enterocolitis Susceptibility through an Altered Downstream Signaling. Int J Mol Sci 2021; 22:ijms22083831. [PMID: 33917126 PMCID: PMC8067804 DOI: 10.3390/ijms22083831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 03/26/2021] [Accepted: 03/28/2021] [Indexed: 12/14/2022] Open
Abstract
Hirschsprung (HSCR) Associated Enterocolitis (HAEC) is a common life-threatening complication in HSCR. HAEC is suggested to be due to a loss of gut homeostasis caused by impairment of immune system, barrier defense, and microbiome, likely related to genetic causes. No gene has been claimed to contribute to HAEC occurrence, yet. Genetic investigation of HAEC by Whole-Exome Sequencing (WES) on 24 HSCR patients affected (HAEC) or not affected (HSCR-only) by enterocolitis and replication of results on a larger panel of patients allowed the identification of the HAEC susceptibility variant p.H187Q in the Oncostatin-M receptor (OSMR) gene (14.6% in HAEC and 5.1% in HSCR-only, p = 0.0024). Proteomic analysis on the lymphoblastoid cell lines from one HAEC patient homozygote for this variant and one HAEC patient not carrying the variant revealed two well distinct clusters of proteins significantly up or downregulated upon OSM stimulation. A marked enrichment in immune response pathways (q < 0.0001) was shown in the HAEC H187 cell line, while proteins upregulated in the HAEC Q187 lymphoblasts sustained pathways likely involved in pathogen infection and inflammation. In conclusion, OSMR p.H187Q is an HAEC susceptibility variant and perturbates the downstream signaling cascade necessary for the gut immune response and homeostasis maintenance.
Collapse
|
361
|
Boeri L, Perottoni S, Izzo L, Giordano C, Albani D. Microbiota-Host Immunity Communication in Neurodegenerative Disorders: Bioengineering Challenges for In Vitro Modeling. Adv Healthc Mater 2021; 10:e2002043. [PMID: 33661580 DOI: 10.1002/adhm.202002043] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 02/01/2021] [Indexed: 12/12/2022]
Abstract
Human microbiota communicates with its host by secreting signaling metabolites, enzymes, or structural components. Its homeostasis strongly influences the modulation of human tissue barriers and immune system. Dysbiosis-induced peripheral immunity response can propagate bacterial and pro-inflammatory signals to the whole body, including the brain. This immune-mediated communication may contribute to several neurodegenerative disorders, as Alzheimer's disease. In fact, neurodegeneration is associated with dysbiosis and neuroinflammation. The interplay between the microbial communities and the brain is complex and bidirectional, and a great deal of interest is emerging to define the exact mechanisms. This review focuses on microbiota-immunity-central nervous system (CNS) communication and shows how gut and oral microbiota populations trigger immune cells, propagating inflammation from the periphery to the cerebral parenchyma, thus contributing to the onset and progression of neurodegeneration. Moreover, an overview of the technological challenges with in vitro modeling of the microbiota-immunity-CNS axis, offering interesting technological hints about the most advanced solutions and current technologies is provided.
Collapse
Affiliation(s)
- Lucia Boeri
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta” Politecnico di Milano Piazza Leonardo da Vinci 32 Milan 20133 Italy
| | - Simone Perottoni
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta” Politecnico di Milano Piazza Leonardo da Vinci 32 Milan 20133 Italy
| | - Luca Izzo
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta” Politecnico di Milano Piazza Leonardo da Vinci 32 Milan 20133 Italy
| | - Carmen Giordano
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta” Politecnico di Milano Piazza Leonardo da Vinci 32 Milan 20133 Italy
| | - Diego Albani
- Department of Neuroscience Istituto di Ricerche Farmacologiche Mario Negri IRCCS via Mario Negri 2 Milan 20156 Italy
| |
Collapse
|
362
|
Parmar N, Burrows K, Vornewald PM, Lindholm HT, Zwiggelaar RT, Díez-Sánchez A, Martín-Alonso M, Fosslie M, Vallance BA, Dahl JA, Zaph C, Oudhoff MJ. Intestinal-epithelial LSD1 controls goblet cell maturation and effector responses required for gut immunity to bacterial and helminth infection. PLoS Pathog 2021; 17:e1009476. [PMID: 33788902 PMCID: PMC8041206 DOI: 10.1371/journal.ppat.1009476] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 04/12/2021] [Accepted: 03/14/2021] [Indexed: 11/18/2022] Open
Abstract
Infectious and inflammatory diseases in the intestine remain a serious threat for patients world-wide. Reprogramming of the intestinal epithelium towards a protective effector state is important to manage inflammation and immunity and can be therapeutically targeted. The role of epigenetic regulatory enzymes within these processes is not yet defined. Here, we use a mouse model that has an intestinal-epithelial specific deletion of the histone demethylase Lsd1 (cKO mice), which maintains the epithelium in a fixed reparative state. Challenge of cKO mice with bacteria-induced colitis or a helminth infection model both resulted in increased pathogenesis. Mechanistically, we discovered that LSD1 is important for goblet cell maturation and goblet-cell effector molecules such as RELMß. We propose that this may be in part mediated by directly controlling genes that facilitate cytoskeletal organization, which is important in goblet cell biology. This study therefore identifies intestinal-epithelial epigenetic regulation by LSD1 as a critical element in host protection from infection. The epithelium that lines our intestine has the important task of taking up nutrients, while also providing a barrier against pathogens. The intestinal epithelium performs these different tasks by having specialized cell types; enterocytes take up nutrients whereas goblet cells are in charge of producing a mucus layer. In addition, goblet cells can be stimulated to make special antimicrobial proteins. This occurs in response to cues called cytokines that come from immune cells, which are able to detect and act on the presence of pathogens such as bacteria or parasitic worms. In this study, we found that LSD1, an enzyme that controls gene expression, was important for goblet cells. Mice that lacked LSD1 specifically in their intestinal epithelium were unable to respond to cytokines and could not defend themselves against bacterial and parasitic infections. In part, we also made use of a specific inhibitor against the enzyme activity of LSD1. This inhibitor also blocked goblet cell differentiation and goblet-cell specific antimicrobial responses to cytokines. We are thus able to manipulate epithelial responses, which may be an important tool in the future to treat patients with infectious diseases.
Collapse
Affiliation(s)
- Naveen Parmar
- CEMIR-Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Kyle Burrows
- The Biomedical Research Centre, University of British Columbia, Vancouver, Canada.,Department of Immunology, University of Toronto, Toronto, Canada
| | - Pia M Vornewald
- CEMIR-Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Håvard T Lindholm
- CEMIR-Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Rosalie T Zwiggelaar
- CEMIR-Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Alberto Díez-Sánchez
- CEMIR-Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Mara Martín-Alonso
- CEMIR-Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Madeleine Fosslie
- Department of Microbiology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Bruce A Vallance
- Department of Pediatrics, Division of Gastroenterology, BC Children's Hospital Research Institute, Vancouver, British Columbia
| | - John Arne Dahl
- Department of Microbiology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Colby Zaph
- Infection and Immunity Program, Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria, Australia
| | - Menno J Oudhoff
- CEMIR-Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| |
Collapse
|
363
|
Schulz-Kuhnt A, Neurath MF, Wirtz S, Atreya I. Innate Lymphoid Cells as Regulators of Epithelial Integrity: Therapeutic Implications for Inflammatory Bowel Diseases. Front Med (Lausanne) 2021; 8:656745. [PMID: 33869257 PMCID: PMC8044918 DOI: 10.3389/fmed.2021.656745] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 03/05/2021] [Indexed: 02/06/2023] Open
Abstract
The occurrence of epithelial defects in the gut relevantly contributes to the pathogenesis of inflammatory bowel diseases (IBD), whereby the impairment of intestinal epithelial barrier integrity seems to represent a primary trigger as well as a disease amplifying consequence of the chronic inflammatory process. Besides epithelial cell intrinsic factors, accumulated and overwhelmingly activated immune cells and their secretome have been identified as critical modulators of the pathologically altered intestinal epithelial cell (IEC) function in IBD. In this context, over the last 10 years increasing levels of attention have been paid to the group of innate lymphoid cells (ILCs). This is in particular due to a preferential location of these rather newly described innate immune cells in close proximity to mucosal barriers, their profound capacity to secrete effector cytokines and their numerical and functional alteration under chronic inflammatory conditions. Aiming on a comprehensive and updated summary of our current understanding of the bidirectional mucosal crosstalk between ILCs and IECs, this review article will in particular focus on the potential capacity of gut infiltrating type-1, type-2, and type-3 helper ILCs (ILC1s, ILC2s, and ILC3s, respectively) to impact on the survival, differentiation, and barrier function of IECs. Based on data acquired in IBD patients or in experimental models of colitis, we will discuss whether the different ILC subgroups could serve as potential therapeutic targets for maintenance of epithelial integrity and/or mucosal healing in IBD.
Collapse
Affiliation(s)
- Anja Schulz-Kuhnt
- Department of Medicine 1, University Hospital of Erlangen, Erlangen, Germany
| | - Markus F. Neurath
- Department of Medicine 1, University Hospital of Erlangen, Erlangen, Germany
- Deutsches Zentrum Immuntherapie, Erlangen, Germany
| | - Stefan Wirtz
- Department of Medicine 1, University Hospital of Erlangen, Erlangen, Germany
| | - Imke Atreya
- Department of Medicine 1, University Hospital of Erlangen, Erlangen, Germany
| |
Collapse
|
364
|
Villena J, Li C, Vizoso-Pinto MG, Sacur J, Ren L, Kitazawa H. Lactiplantibacillus plantarum as a Potential Adjuvant and Delivery System for the Development of SARS-CoV-2 Oral Vaccines. Microorganisms 2021; 9:683. [PMID: 33810287 PMCID: PMC8067309 DOI: 10.3390/microorganisms9040683] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/18/2021] [Accepted: 03/24/2021] [Indexed: 01/08/2023] Open
Abstract
The most important characteristics regarding the mucosal infection and immune responses against the Acute Respiratory Syndrome coronavirus 2 (SARS-CoV-2) as well as the current vaccines against coronavirus disease 2019 (COVID-19) in development or use are revised to emphasize the opportunity for lactic acid bacteria (LAB)-based vaccines to offer a valid alternative in the fight against this disease. In addition, this article revises the knowledge on: (a) the cellular and molecular mechanisms involved in the improvement of mucosal antiviral defenses by beneficial Lactiplantibacillus plantarum strains, (b) the systems for the expression of heterologous proteins in L. plantarum and (c) the successful expressions of viral antigens in L. plantarum that were capable of inducing protective immune responses in the gut and the respiratory tract after their oral administration. The ability of L. plantarum to express viral antigens, including the spike protein of SARS-CoV-2 and its capacity to differentially modulate the innate and adaptive immune responses in both the intestinal and respiratory mucosa after its oral administration, indicates the potential of this LAB to be used in the development of a mucosal COVID-19 vaccine.
Collapse
Affiliation(s)
- Julio Villena
- Reference Centre for Lactobacilli (CERELA-CONICET), Laboratory of Immunobiotechnology, Tucuman CP4000, Argentina
- Laboratory of Animal Products Chemistry, Food and Feed Immunology Group, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Chang Li
- Research Unit of Key Technologies for Prevention and Control of Virus Zoonoses, Chinese Academy of Medical Sciences, Military Veterinary Institute, Academy of Military Medical Sciences, Changchun 130122, China;
| | - Maria Guadalupe Vizoso-Pinto
- Infection Biology Laboratory, Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET-UNT, Tucuman CP4000, Argentina; (M.G.V.-P.); (J.S.)
| | - Jacinto Sacur
- Infection Biology Laboratory, Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET-UNT, Tucuman CP4000, Argentina; (M.G.V.-P.); (J.S.)
| | - Linzhu Ren
- College of Animal Sciences, Key Lab for Zoonoses Research, Ministry of Education, Jilin University, Changchun 130062, China
| | - Haruki Kitazawa
- Laboratory of Animal Products Chemistry, Food and Feed Immunology Group, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
- International Education and Research Center for Food Agricultural Immunology, Livestock Immunology Unit, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| |
Collapse
|
365
|
Gut health: The results of microbial and mucosal immune interactions in pigs. ACTA ACUST UNITED AC 2021; 7:282-294. [PMID: 34258416 PMCID: PMC8245825 DOI: 10.1016/j.aninu.2021.01.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 10/09/2020] [Accepted: 01/04/2021] [Indexed: 02/07/2023]
Abstract
There are a large number of microorganisms in the porcine intestinal tract. These microorganisms and their metabolites contribute to intestinal mucosal immunity, which is of great importance to the health of the host. The host immune system can regulate the distribution and composition of intestinal microorganisms and regulate the homeostasis of intestinal flora by secreting a variety of immune effector factors, such as mucin, secretory immunoglobulin A (sIgA), regenerating islet-derived III (RegIII)γ, and defensin. Conversely, intestinal microorganisms can also promote the differentiation of immune cells including regulatory T cells (Treg) and Th17 cells through their specific components or metabolites. Studies have shown that imbalances in the intestinal flora can lead to bacterial translocation and compromised intestinal barrier function, affecting the health of the body. This review focuses on the composition of the pig intestinal flora and the characteristics of intestinal mucosal immunity, discusses the interaction mechanism between the flora and intestinal mucosal immunity, as well as the regulation through fecal microbiota transplantation (FMT), dietary nutritional composition, probiotics and prebiotics of pig intestinal microecology. Finally, this review provides insights into the relationship between intestinal microorganisms and the mucosal immune system.
Collapse
|
366
|
Maiuolo J, Gliozzi M, Musolino V, Carresi C, Scarano F, Nucera S, Scicchitano M, Oppedisano F, Bosco F, Ruga S, Zito MC, Macri R, Palma E, Muscoli C, Mollace V. The Contribution of Gut Microbiota-Brain Axis in the Development of Brain Disorders. Front Neurosci 2021; 15:616883. [PMID: 33833660 PMCID: PMC8021727 DOI: 10.3389/fnins.2021.616883] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 02/05/2021] [Indexed: 12/19/2022] Open
Abstract
Different bacterial families colonize most mucosal tissues in the human organism such as the skin, mouth, vagina, respiratory, and gastrointestinal districts. In particular, the mammalian intestine hosts a microbial community of between 1,000 and 1,500 bacterial species, collectively called "microbiota." Co-metabolism between the microbiota and the host system is generated and the symbiotic relationship is mutually beneficial. The balance that is achieved between the microbiota and the host organism is fundamental to the organization of the immune system. Scientific studies have highlighted a direct correlation between the intestinal microbiota and the brain, establishing the existence of the gut microbiota-brain axis. Based on this theory, the microbiota acts on the development, physiology, and cognitive functions of the brain, although the mechanisms involved have not yet been fully interpreted. Similarly, a close relationship between alteration of the intestinal microbiota and the onset of several neurological pathologies has been highlighted. This review aims to point out current knowledge as can be found in literature regarding the connection between intestinal dysbiosis and the onset of particular neurological pathologies such as anxiety and depression, autism spectrum disorder, and multiple sclerosis. These disorders have always been considered to be a consequence of neuronal alteration, but in this review, we hypothesize that these alterations may be non-neuronal in origin, and consider the idea that the composition of the microbiota could be directly involved. In this direction, the following two key points will be highlighted: (1) the direct cross-talk that comes about between neurons and gut microbiota, and (2) the degree of impact of the microbiota on the brain. Could we consider the microbiota a valuable target for reducing or modulating the incidence of certain neurological diseases?
Collapse
Affiliation(s)
- Jessica Maiuolo
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
| | - Micaela Gliozzi
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
| | - Vincenzo Musolino
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
| | - Cristina Carresi
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
| | - Federica Scarano
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
| | - Saverio Nucera
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
| | - Miriam Scicchitano
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
| | - Francesca Oppedisano
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
| | - Francesca Bosco
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
| | - Stefano Ruga
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
| | - Maria Caterina Zito
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
| | - Roberta Macri
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
| | - Ernesto Palma
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
| | - Carolina Muscoli
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
- IRCCS San Raffaele, Rome, Italy
| | - Vincenzo Mollace
- IRC-FSH Department of Health Sciences, University “Magna Græcia” of Catanzaro, Catanzaro, Italy
- IRCCS San Raffaele, Rome, Italy
| |
Collapse
|
367
|
Sommer K, Wiendl M, Müller TM, Heidbreder K, Voskens C, Neurath MF, Zundler S. Intestinal Mucosal Wound Healing and Barrier Integrity in IBD-Crosstalk and Trafficking of Cellular Players. Front Med (Lausanne) 2021; 8:643973. [PMID: 33834033 PMCID: PMC8021701 DOI: 10.3389/fmed.2021.643973] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 02/24/2021] [Indexed: 12/12/2022] Open
Abstract
The intestinal epithelial barrier is carrying out two major functions: restricting the entry of potentially harmful substances while on the other hand allowing the selective passage of nutrients. Thus, an intact epithelial barrier is vital to preserve the integrity of the host and to prevent development of disease. Vice versa, an impaired intestinal epithelial barrier function is a hallmark in the development and perpetuation of inflammatory bowel disease (IBD). Besides a multitude of genetic, molecular and cellular alterations predisposing for or driving barrier dysintegrity in IBD, the appearance of intestinal mucosal wounds is a characteristic event of intestinal inflammation apparently inducing breakdown of the intestinal epithelial barrier. Upon injury, the intestinal mucosa undergoes a wound healing process counteracting this breakdown, which is controlled by complex mechanisms such as epithelial restitution, proliferation and differentiation, but also immune cells like macrophages, granulocytes and lymphocytes. Consequently, the repair of mucosal wounds is dependent on a series of events including coordinated trafficking of immune cells to dedicated sites and complex interactions among the cellular players and other mediators involved. Therefore, a better understanding of the crosstalk between epithelial and immune cells as well as cell trafficking during intestinal wound repair is necessary for the development of improved future therapies. In this review, we summarize current concepts on intestinal mucosal wound healing introducing the main cellular mediators and their interplay as well as their trafficking characteristics, before finally discussing the clinical relevance and translational approaches to therapeutically target this process in a clinical setting.
Collapse
Affiliation(s)
- Katrin Sommer
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Maximilian Wiendl
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Tanja M Müller
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Karin Heidbreder
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Caroline Voskens
- Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.,Deutsches Zentrum Immuntherapie (DZI), University Hospital Erlangen, Erlangen, Germany
| | - Markus F Neurath
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.,Deutsches Zentrum Immuntherapie (DZI), University Hospital Erlangen, Erlangen, Germany
| | - Sebastian Zundler
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.,Deutsches Zentrum Immuntherapie (DZI), University Hospital Erlangen, Erlangen, Germany
| |
Collapse
|
368
|
Formation of Autoimmune Lesions Is Independent of Antibiotic Treatment in NOD Mice. Int J Mol Sci 2021; 22:ijms22063239. [PMID: 33810172 PMCID: PMC8005129 DOI: 10.3390/ijms22063239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/19/2021] [Accepted: 03/19/2021] [Indexed: 12/12/2022] Open
Abstract
The relationship between autoimmunity and changes in intestinal microbiota is not yet fully understood. In this study, the role of intestinal microbiota in the onset and progression of autoimmune lesions in non-obese diabetic (NOD) mice was evaluated by administering antibiotics to alter their intestinal microenvironment. Flow cytometric analysis of spleen cells showed that antibiotic administration did not change the proportion or number of T and B cells in NOD mice, and pathological analysis demonstrated that autoimmune lesions in the salivary glands and in the pancreas were also not affected by antibiotic administration. These results suggest that the onset and progression of autoimmunity may be independent of enteral microbiota changes. Our findings may be useful for determining the appropriate use of antibiotics in patients with autoimmune diseases who are prescribed drugs to maintain systemic immune function.
Collapse
|
369
|
Chaudhari SN, Devlin AS. Intestinal Co-culture System to Study TGR5 Agonism and Gut Restriction. Bio Protoc 2021; 11:e3948. [PMID: 33855108 DOI: 10.21769/bioprotoc.3948] [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: 10/23/2020] [Revised: 01/18/2021] [Accepted: 02/02/2021] [Indexed: 11/02/2022] Open
Abstract
The activation of the Takeda G-protein receptor 5 (TGR5, also known as the G protein-coupled bile acid receptor 1, GPBAR1) in enteroendocrine L-cells results in secretion of the anti-diabetic hormone Glucagon-Like Peptide 1 (GLP-1) into systemic circulation. Consequently, recent research has focused on identification and development of TGR5 agonists as type 2 diabetes therapeutics. However, the clinical application of TGR5 agonists has been hampered by side effects of these compounds that primarily result from their absorption into circulation. Here we describe an in vitro screening protocol to evaluate the TGR5 agonism, GLP-1 secretion, and gut-restricted properties of small molecules. The protocol involves differentiating gut epithelial and endocrine cells together in transwells to assess both the pharmacodynamics of TGR5 agonists and the toxicity of compounds to the intestinal monolayer. As a proof of concept, we demonstrate the use of the protocol in evaluating properties of naturally occurring bile acid metabolites that are potent TGR5 agonists. This protocol is adapted from Chaudhari et al. (2021).
Collapse
Affiliation(s)
- Snehal N Chaudhari
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, USA
| | - A Sloan Devlin
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, USA
| |
Collapse
|
370
|
Wottawa F, Bordoni D, Baran N, Rosenstiel P, Aden K. The role of cGAS/STING in intestinal immunity. Eur J Immunol 2021; 51:785-797. [PMID: 33577080 DOI: 10.1002/eji.202048777] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 10/30/2020] [Accepted: 02/10/2021] [Indexed: 01/07/2023]
Abstract
The gastrointestinal tract is a highly complex microenvironment under constant interaction with potentially harmful pathogens. Inflammatory bowel disease (IBD) is an archetypical inflammatory disease, in which the intestinal epithelium, defective autophagy, endoplasmic reticulum stress and dysbiosis play a key role. Although no risk-mediating gene variants of STING (TMEM173) have been identified so far, several seminal findings have elucidated a novel understanding of STING in the context of acute and chronic inflammation. STING, an endoplasmic reticulum resident adaptor protein binding cyclic dinucleotides, is a main inducer of type I interferons and canonically involved in antiviral and antibacterial immunity. Recent research has shed light on additional features of STING signaling involved in regulating the microbiota, facilitating autophagy, cell death or ER stress. Importantly, an increasing amount of studies suggests a considerable overlap of IBD pathophysiology and features of STING signaling. Since compelling evidence shows dysregulated type I IFNs in IBD, it is prompting to speculate on the hypothetical role of cGAS/STING/type I IFN signaling in IBD. Here, we summarize recent findings about the origin and function of STING signaling in the gastrointestinal tract and evolve the hypothesis that disturbed STING signaling might be profoundly interconnected with the pathophysiology of IBD.
Collapse
Affiliation(s)
- Felix Wottawa
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Dora Bordoni
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Nathan Baran
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Philip Rosenstiel
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Konrad Aden
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany.,Department of Internal Medicine I., Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| |
Collapse
|
371
|
Altered intestinal epithelial nutrient transport: an underappreciated factor in obesity modulated by diet and microbiota. Biochem J 2021; 478:975-995. [PMID: 33661278 DOI: 10.1042/bcj20200902] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 02/03/2021] [Accepted: 02/05/2021] [Indexed: 12/31/2022]
Abstract
Dietary nutrients absorbed in the proximal small intestine and assimilated in different tissues have a profound effect on overall energy homeostasis, determined by a balance between body's energy intake and expenditure. In obesity, altered intestinal absorption and consequently tissue assimilation of nutrients may disturb the energy balance leading to metabolic abnormalities at the cellular level. The absorption of nutrients such as sugars, amino acids and fatty acids released from food digestion require high-capacity transporter proteins expressed in the intestinal epithelial absorptive cells. Furthermore, nutrient sensing by specific transporters/receptors expressed in the epithelial enteroendocrine cells triggers release of gut hormones involved in regulating energy homeostasis via their effects on appetite and food intake. Therefore, the intestinal epithelial cells play a pivotal role in the pathophysiology of obesity and associated complications. Over the past decade, gut microbiota has emerged as a key factor contributing to obesity via its effects on digestion and absorption of nutrients in the small intestine, and energy harvest from dietary fiber, undigested component of food, in the large intestine. Various mechanisms of microbiota effects on obesity have been implicated. However, the impact of obesity-associated microbiota on the intestinal nutrient transporters needs extensive investigation. This review marshals the limited studies addressing the altered structure and function of the gut epithelium in obesity with special emphasis on nutrient transporters and role of diet and microbiota. The review also discusses the thoughts and controversies and research gaps in this field.
Collapse
|
372
|
Mio K, Otake N, Nakashima S, Matsuoka T, Aoe S. Ingestion of High β-Glucan Barley Flour Enhances the Intestinal Immune System of Diet-Induced Obese Mice by Prebiotic Effects. Nutrients 2021; 13:907. [PMID: 33799564 PMCID: PMC7999470 DOI: 10.3390/nu13030907] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/04/2021] [Accepted: 03/09/2021] [Indexed: 01/13/2023] Open
Abstract
The prebiotic effect of high β-glucan barley (HGB) flour on the innate immune system of high-fat model mice was investigated. C57BL/6J male mice were fed a high-fat diet supplemented with HGB flour for 90 days. Secretory immunoglobulin A (sIgA) in the cecum and serum were analyzed by enzyme-linked immunosorbent assays (ELISA). Real-time PCR was used to determine mRNA expression levels of pro- and anti-inflammatory cytokines such as interleukin (IL)-10 and IL-6 in the ileum as well as the composition of the microbiota in the cecum. Concentrations of short-chain fatty acids (SCFAs) and organic acids were analyzed by GC/MS. Concentrations of sIgA in the cecum and serum were increased in the HGB group compared to the control. Gene expression levels of IL-10 and polymeric immunoglobulin receptor (pIgR) significantly increased in the HGB group. HGB intake increased the bacterial count of microbiota, such as Bifidobacterium and Lactobacillus. Concentrations of propionate and lactate in the cecum were increased in the HGB group, and a positive correlation was found between these organic acids and the IL-10 expression level. Our findings showed that HGB flour enhanced immune function such as IgA secretion and IL-10 expression, even when the immune system was deteriorated by a high-fat diet. Moreover, we found that HGB flour modulated the gut microbiota, which increased the concentration of SCFAs, thereby stimulating the immune system.
Collapse
Affiliation(s)
- Kento Mio
- Studies in Human Life Sciences, Graduate School of Studies in Human Culture, Otsuma Women’s University, Chiyoda-ku, Tokyo 102-8357, Japan; (K.M.); (N.O.)
- Research and Development Department, Hakubaku Co. Ltd., Chuo-City, Yamanashi 409-3843, Japan; (S.N.); (T.M.)
| | - Nami Otake
- Studies in Human Life Sciences, Graduate School of Studies in Human Culture, Otsuma Women’s University, Chiyoda-ku, Tokyo 102-8357, Japan; (K.M.); (N.O.)
| | - Satoko Nakashima
- Research and Development Department, Hakubaku Co. Ltd., Chuo-City, Yamanashi 409-3843, Japan; (S.N.); (T.M.)
| | - Tsubasa Matsuoka
- Research and Development Department, Hakubaku Co. Ltd., Chuo-City, Yamanashi 409-3843, Japan; (S.N.); (T.M.)
| | - Seiichiro Aoe
- Studies in Human Life Sciences, Graduate School of Studies in Human Culture, Otsuma Women’s University, Chiyoda-ku, Tokyo 102-8357, Japan; (K.M.); (N.O.)
| |
Collapse
|
373
|
Ternet C, Kiel C. Signaling pathways in intestinal homeostasis and colorectal cancer: KRAS at centre stage. Cell Commun Signal 2021; 19:31. [PMID: 33691728 PMCID: PMC7945333 DOI: 10.1186/s12964-021-00712-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/25/2021] [Indexed: 02/06/2023] Open
Abstract
The intestinal epithelium acts as a physical barrier that separates the intestinal microbiota from the host and is critical for preserving intestinal homeostasis. The barrier is formed by tightly linked intestinal epithelial cells (IECs) (i.e. enterocytes, goblet cells, neuroendocrine cells, tuft cells, Paneth cells, and M cells), which constantly self-renew and shed. IECs also communicate with microbiota, coordinate innate and adaptive effector cell functions. In this review, we summarize the signaling pathways contributing to intestinal cell fates and homeostasis functions. We focus especially on intestinal stem cell proliferation, cell junction formation, remodelling, hypoxia, the impact of intestinal microbiota, the immune system, inflammation, and metabolism. Recognizing the critical role of KRAS mutants in colorectal cancer, we highlight the connections of KRAS signaling pathways in coordinating these functions. Furthermore, we review the impact of KRAS colorectal cancer mutants on pathway rewiring associated with disruption and dysfunction of the normal intestinal homeostasis. Given that KRAS is still considered undruggable and the development of treatments that directly target KRAS are unlikely, we discuss the suitability of targeting pathways downstream of KRAS as well as alterations of cell extrinsic/microenvironmental factors as possible targets for modulating signaling pathways in colorectal cancer. Video Abstract
Collapse
Affiliation(s)
- Camille Ternet
- School of Medicine, Systems Biology Ireland, and UCD Charles Institute of Dermatology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Christina Kiel
- School of Medicine, Systems Biology Ireland, and UCD Charles Institute of Dermatology, University College Dublin, Belfield, Dublin 4, Ireland.
| |
Collapse
|
374
|
Evaluating the effect of spaceflight on the host-pathogen interaction between human intestinal epithelial cells and Salmonella Typhimurium. NPJ Microgravity 2021; 7:9. [PMID: 33750813 PMCID: PMC7943786 DOI: 10.1038/s41526-021-00136-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 02/03/2021] [Indexed: 01/31/2023] Open
Abstract
Spaceflight uniquely alters the physiology of both human cells and microbial pathogens, stimulating cellular and molecular changes directly relevant to infectious disease. However, the influence of this environment on host-pathogen interactions remains poorly understood. Here we report our results from the STL-IMMUNE study flown aboard Space Shuttle mission STS-131, which investigated multi-omic responses (transcriptomic, proteomic) of human intestinal epithelial cells to infection with Salmonella Typhimurium when both host and pathogen were simultaneously exposed to spaceflight. To our knowledge, this was the first in-flight infection and dual RNA-seq analysis using human cells.
Collapse
|
375
|
Ren R, Lu D, Liu T. Development of a sandwich-type rat small intestine tissue sensor for detecting resveratrol and its receptors. Biomed Microdevices 2021; 23:13. [PMID: 33666776 DOI: 10.1007/s10544-021-00554-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/22/2021] [Indexed: 10/22/2022]
Abstract
Resveratrol has a variety of biological functions, however, a limited number of studies have assessed its interaction with cell surface receptors. In this study, a sandwich-type rat small intestine tissue sensor (RSIT-sensor) was fabricated to detect the response current from receptor stimulation by different resveratrol concentrations via electrochemical workstation. The results showed that with detection limit of 1 × 10-13 mol/L, the maximum rate of change of the response current was found at the concentration of 8.5 × 10-12 mol/L, indicating that the resveratrol-related receptor was saturated. With comparing the response values of prepared biosensor and bare electrode with resveratrol, it can be concluded that the response value of small intestinal cells to resveratrol has obviously been amplified by the intracellular signal transmission system, and its magnification was about 100 times. In the current research, for the first time, kinetics of the interaction between resveratrol and its receptors and the transmission of signals to the body could be quantitatively measured by a biosensor. Our findings may provide new ideas for resveratrol-related receptor analysis, separation and purification, signal transmission, and evaluation of biological function.
Collapse
Affiliation(s)
- Ruijuan Ren
- College of Biotechnology & Food Science, Tianjin University of Commerce, Tianjin, 300314, China
| | - Dingqiang Lu
- College of Biotechnology & Food Science, Tianjin University of Commerce, Tianjin, 300314, China. .,Tianjin Key Laboratory of Food Biotechnology, Tianjin, 300314, China.
| | - Tingting Liu
- College of Biotechnology & Food Science, Tianjin University of Commerce, Tianjin, 300314, China
| |
Collapse
|
376
|
Mei S, Ma H, Chen X. Anticancer and anti-inflammatory properties of mangiferin: A review of its molecular mechanisms. Food Chem Toxicol 2021; 149:111997. [DOI: 10.1016/j.fct.2021.111997] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 01/04/2021] [Accepted: 01/11/2021] [Indexed: 02/07/2023]
|
377
|
Marzano M, Fosso B, Piancone E, Defazio G, Pesole G, De Robertis M. Stem Cell Impairment at the Host-Microbiota Interface in Colorectal Cancer. Cancers (Basel) 2021; 13:996. [PMID: 33673612 PMCID: PMC7957811 DOI: 10.3390/cancers13050996] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/20/2021] [Accepted: 02/23/2021] [Indexed: 02/07/2023] Open
Abstract
Colorectal cancer (CRC) initiation is believed to result from the conversion of normal intestinal stem cells (ISCs) into cancer stem cells (CSCs), also known as tumor-initiating cells (TICs). Hence, CRC evolves through the multiple acquisition of well-established genetic and epigenetic alterations with an adenoma-carcinoma sequence progression. Unlike other stem cells elsewhere in the body, ISCs cohabit with the intestinal microbiota, which consists of a diverse community of microorganisms, including bacteria, fungi, and viruses. The gut microbiota communicates closely with ISCs and mounting evidence suggests that there is significant crosstalk between host and microbiota at the ISC niche level. Metagenomic analyses have demonstrated that the host-microbiota mutually beneficial symbiosis existing under physiologic conditions is lost during a state of pathological microbial imbalance due to the alteration of microbiota composition (dysbiosis) and/or the genetic susceptibility of the host. The complex interaction between CRC and microbiota is at the forefront of the current CRC research, and there is growing attention on a possible role of the gut microbiome in the pathogenesis of CRC through ISC niche impairment. Here we primarily review the most recent findings on the molecular mechanism underlying the complex interplay between gut microbiota and ISCs, revealing a possible key role of microbiota in the aberrant reprogramming of CSCs in the initiation of CRC. We also discuss recent advances in OMICS approaches and single-cell analyses to explore the relationship between gut microbiota and ISC/CSC niche biology leading to a desirable implementation of the current precision medicine approaches.
Collapse
Affiliation(s)
- Marinella Marzano
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, Consiglio Nazionale delle Ricerche, 70126 Bari, Italy; (M.M.); (B.F.); (G.P.)
| | - Bruno Fosso
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, Consiglio Nazionale delle Ricerche, 70126 Bari, Italy; (M.M.); (B.F.); (G.P.)
| | - Elisabetta Piancone
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari ‘Aldo Moro’, 70126 Bari, Italy; (E.P.); (G.D.)
| | - Giuseppe Defazio
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari ‘Aldo Moro’, 70126 Bari, Italy; (E.P.); (G.D.)
| | - Graziano Pesole
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, Consiglio Nazionale delle Ricerche, 70126 Bari, Italy; (M.M.); (B.F.); (G.P.)
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari ‘Aldo Moro’, 70126 Bari, Italy; (E.P.); (G.D.)
| | - Mariangela De Robertis
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari ‘Aldo Moro’, 70126 Bari, Italy; (E.P.); (G.D.)
| |
Collapse
|
378
|
Andersen-Civil AIS, Arora P, Williams AR. Regulation of Enteric Infection and Immunity by Dietary Proanthocyanidins. Front Immunol 2021; 12:637603. [PMID: 33717185 PMCID: PMC7943737 DOI: 10.3389/fimmu.2021.637603] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 01/14/2021] [Indexed: 12/11/2022] Open
Abstract
The role of dietary components in immune function has acquired considerable attention in recent years. An important focus area is to unravel the role of bioactive dietary compounds in relation to enteric disease and their impact on gut mucosal immunity. Proanthocyanidins (PAC) are among the most common and most consumed dietary polyphenols, and are characterised by their variable molecular structures and diverse bioactivities. In particular, their anti-oxidative effects and ability to modulate gut microbiota have been widely described. However, there is limited evidence on the mechanism of action of PAC on the immune system, nor is it clearly established how PAC may influence susceptibility to enteric infections. Establishing the sites of action of PAC and their metabolites within the gut environment is fundamental to determine the applicability of PAC against enteric pathogens. Some mechanistic studies have shown that PAC have direct modulatory effects on immune cell signalling, isolated pathogens, and gut mucosal barrier integrity. Boosting the recruitment of immune cells and suppressing the amount of pro-inflammatory cytokines are modulating factors regulated by PAC, and can either be beneficial or detrimental in the course of re-establishing gut homeostasis. Herein, we review how PAC may alter distinct immune responses towards enteric bacterial, viral and parasitic infections, and how the modulation of gut microbiota may act as a mediating factor. Furthermore, we discuss how future studies could help unravel the role of PAC in preventing and/or alleviating intestinal inflammation and dysbiosis caused by enteric disease.
Collapse
Affiliation(s)
- Audrey I S Andersen-Civil
- Department of Veterinary and Animal Sciences, University of Copenhagen, Faculty of Health and Medical Sciences, Frederiksberg, Denmark
| | - Pankaj Arora
- Department of Veterinary and Animal Sciences, University of Copenhagen, Faculty of Health and Medical Sciences, Frederiksberg, Denmark
| | - Andrew R Williams
- Department of Veterinary and Animal Sciences, University of Copenhagen, Faculty of Health and Medical Sciences, Frederiksberg, Denmark
| |
Collapse
|
379
|
Ghosh S, Whitley CS, Haribabu B, Jala VR. Regulation of Intestinal Barrier Function by Microbial Metabolites. Cell Mol Gastroenterol Hepatol 2021; 11:1463-1482. [PMID: 33610769 PMCID: PMC8025057 DOI: 10.1016/j.jcmgh.2021.02.007] [Citation(s) in RCA: 255] [Impact Index Per Article: 85.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 02/11/2021] [Accepted: 02/12/2021] [Indexed: 12/11/2022]
Abstract
The human gastrointestinal tract (GI) harbors a diverse population of microbial life that continually shapes host pathophysiological responses. Despite readily available abundant metagenomic data, the functional dynamics of gut microbiota remain to be explored in various health and disease conditions. Microbiota generate a variety of metabolites from dietary products that influence host health and pathophysiological functions. Since gut microbial metabolites are produced in close proximity to gut epithelium, presumably they have significant impact on gut barrier function and immune responses. The goal of this review is to discuss recent advances on gut microbial metabolites in the regulation of intestinal barrier function. While the mechanisms of action of these metabolites are only beginning to emerge, they mainly point to a small group of shared pathways that control gut barrier functions. Amidst expanding technology and broadening knowledge, exploitation of beneficial microbiota and their metabolites to restore pathophysiological balance will likely prove to be an extremely useful remedial tool.
Collapse
Affiliation(s)
- Sweta Ghosh
- Department of Microbiology and Immunology, James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky
| | - Caleb Samuel Whitley
- Department of Microbiology and Immunology, James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky
| | - Bodduluri Haribabu
- Department of Microbiology and Immunology, James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky
| | - Venkatakrishna Rao Jala
- Department of Microbiology and Immunology, James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky.
| |
Collapse
|
380
|
Jalili-Firoozinezhad S, Miranda CC, Cabral JMS. Modeling the Human Body on Microfluidic Chips. Trends Biotechnol 2021; 39:838-852. [PMID: 33581889 DOI: 10.1016/j.tibtech.2021.01.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 02/07/2023]
Abstract
Animals often fail to faithfully mimic human diseases and drug toxicities, and most in vitro models are not complex enough to recapitulate human body function and pathophysiology. Organ-on-chip culture technology, however, offers a promising tool for the study of tissue development and homeostasis, which has brought us one step closer to performing human experimentation in vitro. To recapitulate the complex functionality of multiple organs at once, their respective on-chip models can be linked to create a functional human body-on-chip platform. Here, we highlight the advantages and translational potentials of body-on-chip platforms in disease modeling, therapeutic development, and personalized medicine. We provide the reader with current limitations of the body-on-chip approach and new ideas to address the pending issues moving forwards.
Collapse
Affiliation(s)
- Sasan Jalili-Firoozinezhad
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Cláudia C Miranda
- iBB - Institute for Bioengineering and Biosciences and Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Joaquim M S Cabral
- iBB - Institute for Bioengineering and Biosciences and Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
| |
Collapse
|
381
|
Inoue C, Negoro R, Takayama K, Mizuguchi H, Sakurai F. Asymmetric profiles of infection and innate immunological responses in human iPS cell-derived small intestinal epithelial-like cell monolayers following infection with mammalian reovirus. Virus Res 2021; 296:198334. [PMID: 33581186 DOI: 10.1016/j.virusres.2021.198334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 02/01/2021] [Accepted: 02/02/2021] [Indexed: 11/20/2022]
Abstract
The intestinal mucosa plays an important role as an immune barrier due to its continual exposure to invading pathogens, including viruses. It is thus highly important to evaluate virus infection profiles in the intestinal mucosa for prevention of virus infection and development of antivirus medicines; however, only a few enterocyte lines are available as in vitro intestinal models for the evaluation of virus infection. In this study, we evaluated profiles of infection and innate immune responses following infection with a mammalian orthoreovirus (hereafter reovirus), which has often been used as a tractable model for studies of viral pathogenesis, in human iPS cell-derived small intestinal epithelial-like cell (hiPS-SIEC) monolayers and cells of a human colon adenocarcinoma cell line, Caco-2. The levels of reovirus infection were similar between hiPS-SIEC and Caco-2 cell monolayers, which are often used as an intestinal model, after apical and basolateral infection. In hiPS-SIEC monolayers, more efficient replication of the virus genome was observed following basolateral infection than apical infection, while apical infection resulted in higher levels of virus protein expression and progeny virus production than basolateral infection. Reovirus significantly induced innate immune responses, including expression of type I and III interferons (IFNs), in hiPS-SIEC monolayers more efficiently than Caco-2 cells. Higher levels of type I and III interferon (IFN) expression were found in hiPS-SIEC monolayers following apical infection than basolateral infection. These results suggested that hiPS-SIECs are a promising in vitro model for the evaluation of virus infection.
Collapse
Affiliation(s)
- Chieko Inoue
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Ryosuke Negoro
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Kazuo Takayama
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan; PRESTO, Japan Science and Technology Agency, Saitama, Japan; Laboratory of Hepatocyte Regulation, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Hiroyuki Mizuguchi
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan; PRESTO, Japan Science and Technology Agency, Saitama, Japan; The Center for Advanced Medical Engineering and Informatics, Osaka University, Osaka, Japan; Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Osaka, Japan.
| | - Fuminori Sakurai
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan.
| |
Collapse
|
382
|
Agarwal T, Onesto V, Lamboni L, Ansari A, Maiti TK, Makvandi P, Vosough M, Yang G. Engineering biomimetic intestinal topological features in 3D tissue models: retrospects and prospects. Biodes Manuf 2021. [DOI: 10.1007/s42242-020-00120-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
383
|
Tang J, Xu L, Zeng Y, Gong F. Effect of gut microbiota on LPS-induced acute lung injury by regulating the TLR4/NF-kB signaling pathway. Int Immunopharmacol 2021; 91:107272. [PMID: 33360370 DOI: 10.1016/j.intimp.2020.107272] [Citation(s) in RCA: 198] [Impact Index Per Article: 66.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/26/2020] [Accepted: 11/30/2020] [Indexed: 02/06/2023]
Abstract
Acute lung injury (ALI) is a common acute respiratory disease treated in the clinic. Intestinal microflora disorder affect lung diseases through the gut-lung axis. In this study, we explored the regulatory mechanism of the gut flora in the host defense against lipopolysaccharide (LPS)-induced ALI through the TLR4/NF-kB pathway by constructing a gut microflora dysbiosis-model with antibiotic administration and reconstruction of the intestinal microecology. Then, high-throughput sequencing was performed, and the levels of secreted IgA (sIgA), β-defensins, and Muc2 were measured to assess the gut flora and mucosal barrier. The expression of TLR4, NF-kB, TNF-α, IL-1β, oxidative stress and the lung wet/dry (W/D) ratio were evaluated to assess lung damage. Hematoxylin and eosin (HE) staining was performed to evaluate the damage to the gut and lung tissues. Accordingly, gut microbiota imbalance may regulate the TLR4/NF-kB signaling pathway in the lung immune system, activating oxidative stress in the lung and mediating lung injury through the regulation of the gut barrier. However, fecal microbiota transplantation (FMT) impairs the activity of the TLR4/NF-kB signaling pathway in the lung and decreases oxidative stress in animals with ALI by restoring the gut microecology. CONCLUSIONS: Our results indicated the protective effect of gut flora in regulating immunity of LPS-induced ALI by modulating the TLR4/NF-kB signaling pathway which may induce inflammation and oxidative stress.
Collapse
Affiliation(s)
- Jia Tang
- Department of Pediatrics, Yongchuan Hospital Affiliated to Chongqing Medical University, Chongqing 402160, China; Department of Pediatrics, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Lingqi Xu
- Department of Pediatrics, Yongchuan Hospital Affiliated to Chongqing Medical University, Chongqing 402160, China
| | - Yiwen Zeng
- Department of Pediatrics, Yongchuan Hospital Affiliated to Chongqing Medical University, Chongqing 402160, China
| | - Fang Gong
- Department of Pediatrics, Yongchuan Hospital Affiliated to Chongqing Medical University, Chongqing 402160, China.
| |
Collapse
|
384
|
Bioactive peptides and gut microbiota: Candidates for a novel strategy for reduction and control of neurodegenerative diseases. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2020.12.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
385
|
Ding Y, Chen D, Yan Y, Chen G, Ran L, Mi J, Lu L, Zeng X, Cao Y. Effects of long-term consumption of polysaccharides from the fruit of Lycium barbarum on host's health. Food Res Int 2021; 139:109913. [PMID: 33509480 DOI: 10.1016/j.foodres.2020.109913] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 11/05/2020] [Accepted: 11/15/2020] [Indexed: 01/29/2023]
Abstract
Polysaccharides from the fruit of Lycium barbarum (LBPs) are functional molecules with diverse biological functions in vivo and in vitro. This study investigated the long-term consumption of LBPs on host's health in BALB/c mice. Six-week-old male mice (n = 10 each group) were fed either a normal control (NC) diet or supplemented with 200 mg/kg (body weight)/d of LBPs for 14 weeks. Compared with the NC diet, the LBPs diet enhanced the expression of mucin 2 and Claudin5, improved the intestinal barrier morphologically, moreover, promoted the growth of Lactobacillus and strongly increased the production of short-chain fatty acids and IgA (p < 0.05). Feeding LBPs increased the levels of superoxide dismutase and reduced glutathione in the serum, liver and spleen while decreased the levels of alanine aminotransferase and lysozyme in serum and spleen. Besides, the LBPs diet increased the expression of cytokines including tumor necrosis factor α and interleukin-6 and related mRNA but decreased the level of lysozyme. To sum up, chronic intake of LBPs in BALB/c mice improved the oxidation resistance, changed the immune status especially promoted the intestinal immunity. These results may have important implications for LBPs as functional food supplement and for realizing the potential value of LBPs for host's health.
Collapse
Affiliation(s)
- Yu Ding
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Dan Chen
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Yamei Yan
- Institute of Wolfberry Engineering Technology, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, Ningxia, China
| | - Guijie Chen
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, People's Republic of China
| | - Linwu Ran
- Laboratory Animal Center, Ningxia Medical University, Yinchuan 750004, Ningxia, China
| | - Jia Mi
- Institute of Wolfberry Engineering Technology, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, Ningxia, China
| | - Lu Lu
- Institute of Wolfberry Engineering Technology, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, Ningxia, China
| | - Xiaoxiong Zeng
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, People's Republic of China.
| | - Youlong Cao
- Institute of Wolfberry Engineering Technology, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, Ningxia, China.
| |
Collapse
|
386
|
Quercetin Alleviates Oxidative Damage by Activating Nuclear Factor Erythroid 2-Related Factor 2 Signaling in Porcine Enterocytes. Nutrients 2021; 13:nu13020375. [PMID: 33530513 PMCID: PMC7911945 DOI: 10.3390/nu13020375] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 12/24/2020] [Accepted: 12/29/2020] [Indexed: 12/12/2022] Open
Abstract
Oxidative stress has been implicated in the etiology of multiple gastrointestinal disorders, such as irritable bowel syndrome and inflammatory bowel disease. This study was conducted to evaluate effects of natural product quercetin on diquat-induced oxidative stress in porcine enterocytes and underlying mechanisms. Intestinal porcine epithelial cell line 1 (IPEC-1) cells pretreated with or without quercetin (5 μM, 24 h) were incubated with vehicle or diquat (100 μM) for 6 h. The results showed that diquat treatment induced apoptosis in a caspase-3-dependent manner, as accompanied by elevated reactive oxygen species (ROS) production, increased mitochondrial depolarization, and reduced the abundance of tight junction proteins. These adverse effects of diquat were remarkably abrogated by quercetin administration. Further study indicated that the protective effect of quercetin was associated with elevated protein abundance of nuclear factor erythroid 2-related factor 2 (Nrf2) and increased intracellular glutathione (GSH) content. Interestingly, the beneficial effects of quercetin on diquat-induced oxidative damage were abolished by all-trans-retinoic acid (Atra), a specific inhibitor of Nrf2, indicating a Nrf2-dependent regulation manner. The results show that quercetin attenuates diquat-induced cell injury by promoting protein abundance of Nrf2 and regulating GSH-related redox homeostasis in enterocytes. These findings provide new insights into a function role of quercetin in maintaining intestinal homeostasis.
Collapse
|
387
|
Deng Y, McDonald OG, Means AL, Peek RM, Washington MK, Acra SA, Polk DB, Yan F. Exposure to p40 in Early Life Prevents Intestinal Inflammation in Adulthood Through Inducing a Long-Lasting Epigenetic Imprint on TGFβ. Cell Mol Gastroenterol Hepatol 2021; 11:1327-1345. [PMID: 33482393 PMCID: PMC8020481 DOI: 10.1016/j.jcmgh.2021.01.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 01/08/2021] [Accepted: 01/11/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND & AIMS Colonization by gut microbiota in early life confers beneficial effects on immunity throughout the host's lifespan. We sought to elucidate the mechanisms whereby neonatal supplementation with p40, a probiotic functional factor, reprograms intestinal epithelial cells for protection against adult-onset intestinal inflammation. METHODS p40 was used to treat young adult mouse colonic (YAMC) epithelial cells with and without deletion of a methyltransferase, su(var)3-9, enhancer-of-zeste and trithorax domain-containing 1β (Setd1β), and mice in early life or in adulthood. Anti-transforming growth factor β (TGFβ)-neutralizing antibodies were administered to adult mice with and without colitis induced by 2,4,6-trinitrobenzenesulfonic acid or dextran sulfate sodium. We examined Setd1b and Tgfb gene expression, TGFβ production, monomethylation and trimethylation of histone H3 on the lysine 4 residue (H3K4me1/3), H3K4me3 enrichment in Tgfb promoter, differentiation of regulatory T cells (Tregs), and the inflammatory status. RESULTS p40 up-regulated expression of Setd1b in YAMC cells. Accordingly, p40 enhanced H3K4me1/3 in YAMC cells in a Setd1β-dependent manner. p40-regulated Setd1β mediated programming the TGFβ locus into a transcriptionally permissive chromatin state and promoting TGFβ production in YAMC. Furthermore, transient exposure to p40 during the neonatal period and in adulthood resulted in the immediate increase in Tgfb gene expression. However, only neonatal p40 supplementation induced the sustained H3K4me1/3 and Tgfb gene expression that persisted into adulthood. Interfering with TGFβ function by neutralizing antibodies diminished the long-lasting effects of neonatal p40 supplementation on differentiation of Tregs and protection against colitis in adult mice. CONCLUSIONS Exposure to p40 in early life enables an epigenetic imprint on TGFβ, leading to long-lasting production of TGFβ by intestinal epithelial cells to expand Tregs and protect the gut against inflammation.
Collapse
Affiliation(s)
- Yilin Deng
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Oliver G McDonald
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee; Department of Cell and Developmental Biology, Vanderbilt University, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt University Medical Center, Nashville, Tennessee; Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Anna L Means
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, Tennessee; Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Richard M Peek
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - M Kay Washington
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Sari A Acra
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - D Brent Polk
- Department of Pediatrics, Keck School of Medicine of University of Southern California, Los Angeles, California; Department of Biochemistry and Molecular Medicine, Keck School of Medicine of University of Southern California, Los Angeles, California; Division of Gastroenterology, Hepatology and Nutrition, Children's Hospital Los Angeles, Los Angeles, California
| | - Fang Yan
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee.
| |
Collapse
|
388
|
Hou F, Pan Z, Yang R, Zhi F, Bi Y. Gold digging: Searching for gut microbiota that enhances antitumor immunity. J Cell Physiol 2021; 236:5495-5511. [PMID: 33452716 DOI: 10.1002/jcp.30272] [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: 09/23/2020] [Revised: 12/18/2020] [Accepted: 12/29/2020] [Indexed: 11/09/2022]
Abstract
Programmed cell death protein-1/programmed cell death-ligand 1 and cytotoxic T-lymphocyte antigen-4 are two immune checkpoint inhibitors (ICIs), exhibiting significant antitumor effects on multiple types of cancers in clinical practice. However, only some patients respond to ICI agents, which limits their widespread application. Recent findings revealed that the gut microbiota is relevant to host health through the modulation of host physical and immune functions. Therefore, the modulation of gut microbiota to achieve the desired taxa may be a potential strategy to improve the efficacy of immunotherapies. In this review, we classified the relative microbes according to their taxonomic information and aimed to clarify their modulatory functions and potent effects on ICI immunotherapy by focusing on recent trials investigating the relationships between the gut microbiota and ICIs.
Collapse
Affiliation(s)
- Fengyi Hou
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Nanfang Hospital, Southern Medical University, Guangzhou, China.,State Key Laboratory of Pathogen and Biosecurity, Department of Unknown Microbiology, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Zhiyuan Pan
- State Key Laboratory of Pathogen and Biosecurity, Department of Unknown Microbiology, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Ruifu Yang
- State Key Laboratory of Pathogen and Biosecurity, Department of Unknown Microbiology, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Fachao Zhi
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yujing Bi
- State Key Laboratory of Pathogen and Biosecurity, Department of Unknown Microbiology, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| |
Collapse
|
389
|
Kim YI, Yi EJ, Kim YD, Lee AR, Chung J, Ha HC, Cho JM, Kim SR, Ko HJ, Cheon JH, Hong YR, Chang SY. Local Stabilization of Hypoxia-Inducible Factor-1α Controls Intestinal Inflammation via Enhanced Gut Barrier Function and Immune Regulation. Front Immunol 2021; 11:609689. [PMID: 33519819 PMCID: PMC7840603 DOI: 10.3389/fimmu.2020.609689] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 11/30/2020] [Indexed: 12/13/2022] Open
Abstract
Intestinal epithelial cells are adapted in mucosal hypoxia and hypoxia-inducible factors in these cells can fortify barrier integrity to support mucosal tissue healing. Here we investigated whether hypoxia-related pathways could be proposed as potential therapeutic targets for inflammatory bowel disease. We developed a novel hypoxia-inducible factor (HIF) prolyl hydroxylase inhibitor, CG-598 which stabilized HIF-1α in the gut tissue. Treatment of CG-598 did not affect extra-intestinal organs or cause any significant adverse effects such as erythropoiesis. In the experimental murine colitis model, CG-598 ameliorated intestinal inflammation with reduction of inflammatory lesions and pro-inflammatory cytokines. CG-598 treatment fortified barrier function by increasing the expression of intestinal trefoil factor, CD73, E-cadherin and mucin. Also, IL-10 and IL-22 were induced from lamina propria CD4+ T-cells. The effectiveness of CG-598 was comparable to other immunosuppressive therapeutics such as TNF-blockers or JAK inhibitors. These results suggest that CG-598 could be a promising therapeutic candidate to treat inflammatory bowel disease.
Collapse
Affiliation(s)
- Young-In Kim
- Laboratory of Microbiology, College of Pharmacy and Research Institute of Pharmaceutical Science and Technology, Ajou University, Suwon, South Korea
| | - Eun-Je Yi
- Laboratory of Microbiology, College of Pharmacy and Research Institute of Pharmaceutical Science and Technology, Ajou University, Suwon, South Korea
| | - Young-Dae Kim
- Institute for Drug Discovery, CrystalGenomics, Inc., Seongnam-si, South Korea
| | - A Reum Lee
- Institute for Drug Discovery, CrystalGenomics, Inc., Seongnam-si, South Korea
| | - Jiwoung Chung
- Institute for Drug Discovery, CrystalGenomics, Inc., Seongnam-si, South Korea
| | - Hae Chan Ha
- Institute for Drug Discovery, CrystalGenomics, Inc., Seongnam-si, South Korea
| | - Joong Myung Cho
- Institute for Drug Discovery, CrystalGenomics, Inc., Seongnam-si, South Korea
| | - Seong-Ryeol Kim
- Laboratory of Microbiology and Immunology, Department of Pharmacy, Kangwon National University, Chuncheon-si, South Korea
| | - Hyun-Jeong Ko
- Laboratory of Microbiology and Immunology, Department of Pharmacy, Kangwon National University, Chuncheon-si, South Korea
| | - Jae-Hee Cheon
- Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, South Korea
| | - Yong Rae Hong
- Institute for Drug Discovery, CrystalGenomics, Inc., Seongnam-si, South Korea
| | - Sun-Young Chang
- Laboratory of Microbiology, College of Pharmacy and Research Institute of Pharmaceutical Science and Technology, Ajou University, Suwon, South Korea
| |
Collapse
|
390
|
Zhao Y, Zeng Y, Zeng D, Wang H, Zhou M, Sun N, Xin J, Khalique A, Rajput DS, Pan K, Shu G, Jing B, Ni X. Probiotics and MicroRNA: Their Roles in the Host-Microbe Interactions. Front Microbiol 2021; 11:604462. [PMID: 33603718 PMCID: PMC7885260 DOI: 10.3389/fmicb.2020.604462] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 12/07/2020] [Indexed: 12/13/2022] Open
Abstract
Probiotics are widely accepted to be beneficial for the maintenance of the gut homeostasis - the dynamic and healthy interactions between host and gut microorganisms. In addition, emerging as a key molecule of inter-domain communication, microRNAs (miRNAs) can also mediate the host-microbe interactions. However, a comprehensive description and summary of the association between miRNAs and probiotics have not been reported yet. In this review, we have discussed the roles of probiotics and miRNAs in host-microbe interactions and proposed the association of probiotics with altered miRNAs in various intestinal diseases and potential molecular mechanisms underlying the action of probiotics. Furthermore, we provided a perspective of probiotics-miRNA-host/gut microbiota axis applied in search of disease management highly associated with the gut microbiome, which will potentially prove to be beneficial for future studies.
Collapse
Affiliation(s)
- Ying Zhao
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| | - Yan Zeng
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| | - Dong Zeng
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| | - Hesong Wang
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Mengjia Zhou
- Sichuan Academy of Animal Sciences, Animal Breeding and Genetics Key Laboratory of Sichuan Province, Chengdu, China
| | - Ning Sun
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| | - Jinge Xin
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| | - Abdul Khalique
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| | - Danish Sharafat Rajput
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| | - Kangcheng Pan
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| | - Gang Shu
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| | - Bo Jing
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| | - Xueqin Ni
- Animal Microecology Institute, College of Veterinary, Sichuan Agricultural University, Chengdu, China
| |
Collapse
|
391
|
Snyder LM, Denkers EY. From Initiators to Effectors: Roadmap Through the Intestine During Encounter of Toxoplasma gondii With the Mucosal Immune System. Front Cell Infect Microbiol 2021; 10:614701. [PMID: 33505924 PMCID: PMC7829212 DOI: 10.3389/fcimb.2020.614701] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 11/24/2020] [Indexed: 12/26/2022] Open
Abstract
The gastrointestinal tract is a major portal of entry for many pathogens, including the protozoan parasite Toxoplasma gondii. Billions of people worldwide have acquired T. gondii at some point in their life, and for the vast majority this has led to latent infection in the central nervous system. The first line of host defense against Toxoplasma is located within the intestinal mucosa. Appropriate coordination of responses by the intestinal epithelium, intraepithelial lymphocytes, and lamina propria cells results in an inflammatory response that controls acute infection. Under some conditions, infection elicits bacterial dysbiosis and immune-mediated tissue damage in the intestine. Here, we discuss the complex interactions between the microbiota, the epithelium, as well as innate and adaptive immune cells in the intestinal mucosa that induce protective immunity, and that sometimes switch to inflammatory pathology as T. gondii encounters tissues of the gut.
Collapse
Affiliation(s)
- Lindsay M Snyder
- Center for Evolutionary and Theoretical Immunology and Department of Biology, University of New Mexico, Albuquerque, NM, United States
| | - Eric Y Denkers
- Center for Evolutionary and Theoretical Immunology and Department of Biology, University of New Mexico, Albuquerque, NM, United States
| |
Collapse
|
392
|
Salas-González I, Reyt G, Flis P, Custódio V, Gopaulchan D, Bakhoum N, Dew TP, Suresh K, Franke RB, Dangl JL, Salt DE, Castrillo G. Coordination between microbiota and root endodermis supports plant mineral nutrient homeostasis. Science 2021; 371:science.abd0695. [DOI: 10.1126/science.abd0695] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 11/02/2020] [Indexed: 12/15/2022]
Affiliation(s)
- Isai Salas-González
- Curriculum in Bioinformatics and Computational Biology, Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Howard Hughes Medical Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Guilhem Reyt
- School of Biosciences, University of Nottingham, Sutton Bonington, UK
- Future Food Beacon of Excellence, University of Nottingham, Sutton Bonington, UK
| | - Paulina Flis
- School of Biosciences, University of Nottingham, Sutton Bonington, UK
- Future Food Beacon of Excellence, University of Nottingham, Sutton Bonington, UK
| | - Valéria Custódio
- Instituto de Tecnologia Química e Biológica António Xavier, Universidad de Nova de Lisboa, Lisboa, Portugal
| | - David Gopaulchan
- School of Biosciences, University of Nottingham, Sutton Bonington, UK
- Future Food Beacon of Excellence, University of Nottingham, Sutton Bonington, UK
| | - Niokhor Bakhoum
- School of Biosciences, University of Nottingham, Sutton Bonington, UK
- Future Food Beacon of Excellence, University of Nottingham, Sutton Bonington, UK
| | - Tristan P. Dew
- School of Biosciences, University of Nottingham, Sutton Bonington, UK
- Future Food Beacon of Excellence, University of Nottingham, Sutton Bonington, UK
| | - Kiran Suresh
- Institute of Cellular and Molecular Botany, University of Bonn, Bonn, Germany
| | - Rochus Benni Franke
- Institute of Cellular and Molecular Botany, University of Bonn, Bonn, Germany
| | - Jeffery L. Dangl
- Curriculum in Bioinformatics and Computational Biology, Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Howard Hughes Medical Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - David E. Salt
- School of Biosciences, University of Nottingham, Sutton Bonington, UK
- Future Food Beacon of Excellence, University of Nottingham, Sutton Bonington, UK
| | - Gabriel Castrillo
- School of Biosciences, University of Nottingham, Sutton Bonington, UK
- Future Food Beacon of Excellence, University of Nottingham, Sutton Bonington, UK
| |
Collapse
|
393
|
Gu BH, Kim M, Yun CH. Regulation of Gastrointestinal Immunity by Metabolites. Nutrients 2021; 13:nu13010167. [PMID: 33430497 PMCID: PMC7826526 DOI: 10.3390/nu13010167] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/01/2021] [Accepted: 01/04/2021] [Indexed: 12/11/2022] Open
Abstract
The gastrointestinal tract contains multiple types of immune cells that maintain the balance between tolerance and activation at the first line of host defense facing non-self antigens, including dietary antigens, commensal bacteria, and sometimes unexpected pathogens. The maintenance of homeostasis at the gastrointestinal tract requires stringent regulation of immune responses against various environmental conditions. Dietary components can be converted into gut metabolites with unique functional activities through host as well as microbial enzymatic activities. Accumulating evidence demonstrates that gastrointestinal metabolites have significant impacts on the regulation of intestinal immunity and are further integrated into the immune response of distal mucosal tissue. Metabolites, especially those derived from the microbiota, regulate immune cell functions in various ways, including the recognition and activation of cell surface receptors, the control of gene expression by epigenetic regulation, and the integration of cellular metabolism. These mucosal immune regulations are key to understanding the mechanisms underlying the development of gastrointestinal disorders. Here, we review recent advancements in our understanding of the role of gut metabolites in the regulation of gastrointestinal immunity, highlighting the cellular and molecular regulatory mechanisms by macronutrient-derived metabolites.
Collapse
Affiliation(s)
- Bon-Hee Gu
- Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Korea;
| | - Myunghoo Kim
- Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Korea;
- Department of Animal Science, College of Natural Resources & Life Science, Pusan National University, Miryang 50463, Korea
- Correspondence: (M.K.); (C.-H.Y.)
| | - Cheol-Heui Yun
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
- Center for Food and Bioconvergence, Seoul National University, Seoul 08826, Korea
- Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang-gun, Gangwon-do 25354, Korea
- Correspondence: (M.K.); (C.-H.Y.)
| |
Collapse
|
394
|
Koren N, Zubeidat K, Saba Y, Horev Y, Barel O, Wilharm A, Heyman O, Wald S, Eli-Berchoer L, Shapiro H, Nadler C, Elinav E, Wilensky A, Prinz I, Bercovier H, Hovav AH. Maturation of the neonatal oral mucosa involves unique epithelium-microbiota interactions. Cell Host Microbe 2021; 29:197-209.e5. [PMID: 33412104 DOI: 10.1016/j.chom.2020.12.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 10/26/2020] [Accepted: 12/03/2020] [Indexed: 12/19/2022]
Abstract
Postnatal host-microbiota interplay governs mucosal homeostasis and is considered to have life-long health consequences. The intestine monolayer epithelium is critically involved in such early-life processes; nevertheless, the role of the oral multilayer epithelium remains ill defined. We demonstrate that unlike the intestine, the neonate oral cavity is immensely colonized by the microbiota that decline to adult levels during weaning. Neutrophils are present in the oral epithelium prenatally, and exposure to the microbiota postnatally further recruits them to the preamble neonatal epithelium by γδT17 cells. These neutrophils virtually disappear during weaning as the epithelium seals. The neonate and adult epithelium display distinct turnover kinetics and transcriptomic signatures, with neonate epithelium reminiscent of the signature found in germ-free mice. Microbial reduction during weaning is mediated by the upregulation of saliva production and induction of salivary antimicrobial components by the microbiota. Collectively, unique postnatal interactions between the multilayer epithelium and microbiota shape oral homeostasis.
Collapse
Affiliation(s)
- Noam Koren
- Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University, Jerusalem, Israel
| | - Khaled Zubeidat
- Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University, Jerusalem, Israel
| | - Yasmin Saba
- Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University, Jerusalem, Israel
| | - Yael Horev
- Department of Periodontology, Faculty of Dental Medicine, Hadassah Medical Center, Jerusalem, Israel
| | - Or Barel
- Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University, Jerusalem, Israel
| | - Anneke Wilharm
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Oded Heyman
- Department of Periodontology, Faculty of Dental Medicine, Hadassah Medical Center, Jerusalem, Israel
| | - Sharon Wald
- Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University, Jerusalem, Israel
| | - Luba Eli-Berchoer
- Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University, Jerusalem, Israel
| | - Hagit Shapiro
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Chen Nadler
- Oral Medicine Department, Hebrew University, Hadassah School of Dental Medicine, Jerusalem
| | - Eran Elinav
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Asaf Wilensky
- Department of Periodontology, Faculty of Dental Medicine, Hadassah Medical Center, Jerusalem, Israel
| | - Immo Prinz
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Hillel Bercovier
- Department of Microbiology and Molecular Genetics, Faculty of Medicine, Hebrew University, Jerusalem, Israel
| | - Avi-Hai Hovav
- Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University, Jerusalem, Israel.
| |
Collapse
|
395
|
McCullough RW. Barrier therapies supporting the biology of the mucosal barrier-medical devices for common clinical mucosal disorders. Transl Gastroenterol Hepatol 2021; 6:15. [PMID: 33409409 PMCID: PMC7724181 DOI: 10.21037/tgh.2020.02.02] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 01/18/2020] [Indexed: 12/12/2022] Open
Abstract
Recently mucosal barrier therapies have been either CE marked or licensed by Food and Drug Administration (FDA) as medical devices. A barrier therapy (BT) uses a physical non-drug mode of action as its sole mechanism to manage a clinical syndrome. A BT is verified as technically or biologically safe having efficacy that has been proven by valid clinical trials. However, it remains unclear what anatomical portions of the mucosa are physically engaged by any given BT. Therefore, this article clarifies the physical basis for clinical efficacy of any given mucosal BT's. Current regulatory classification of medical devices is defined. More importantly, the biology of mucosal barrier is detailed by structure, compartmental elements and function. A live-function or cross-sectional anatomical perspective of the mucosa is provided. A cross-sectional anatomical perspective of the mucosa is provided in order to highlight the physical point of contact for any given mucosal BT's. Five traits of an effective mucosal BT are proposed to assess traits of fitness for any given BT. A BT is either classical, possessing four to five traits, or non-classical, possessing three or fewer traits. Among 16 commercially available mucosal BT's which share nine distinct formulations, most are non-classical BT while two (alginate and polymeric sucralfate) are classical mucosal BT's.
Collapse
Affiliation(s)
- Ricky W McCullough
- Translational Medicine Clinic and Research Center at Storrs, Storrs, CT, USA
| |
Collapse
|
396
|
Differentiated Caco-2 cell models in food-intestine interaction study: Current applications and future trends. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2020.11.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
397
|
Sertraline and Citalopram Actions on Gut Barrier Function. Dig Dis Sci 2021; 66:3792-3802. [PMID: 33184794 PMCID: PMC8510962 DOI: 10.1007/s10620-020-06702-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 10/29/2020] [Indexed: 12/09/2022]
Abstract
INTRODUCTION Disruption of intestinal barrier is a key component to various diseases. Whether barrier dysfunction is the cause or effect in these situations is still unknown, although it is believed that translocation of luminal content may initiate gastrointestinal or systemic inflammatory disorders. Since trauma- or infection-driven epithelial permeability depends on Toll-like receptor (TLR) activity, inhibition of TLR signaling has been proposed as a strategy to protect intestinal barrier integrity after infection or other pathological conditions. Recently, selective serotonin recapture inhibitors including sertraline and citalopram were shown to inhibit TLR-3 activity, but the direct effects of these antidepressant drugs on the gut mucosa barrier remain largely unexplored. MATERIALS AND METHODS To investigate this, two approaches were used: first, ex vivo studies were performed to evaluate sertraline and citalopram-driven changes in permeability in isolated intestinal tissue. Second, both compounds were tested for their preventive effects in a rat model of disrupted gut barrier, induced by a low protein (LP) diet. RESULTS Only sertraline was able to increase transepithelial electrical resistance in the rat colon both when used in an ex vivo (0.8 μg/mL, 180 min) or in vivo (30 mg/kg p.o., 20 days) fashion. However, citalopram (20 mg/kg p.o., 20 days), but not sertraline, prevented the increase in phospho-IRF3 protein, a marker of TLR-3 activation, in LP-rat ileum. Neither antidepressant affected locomotion, anxiety-like behaviours or stress-induced defecation. CONCLUSION Our data provides evidence to support the investigation of sertraline as therapeutic strategy to protect intestinal barrier function under life-threatening situations or chronic conditions associated with gut epithelial disruption.
Collapse
|
398
|
Abstract
Mucosal surfaces are distinctive sites exposed to environmental, dietary, and microbial antigens. Particularly in the gut, the host continuously actively adapts via complex interactions between the microbiota and dietary compounds and immune and other tissue cells. Regulatory T cells (Tregs) are critical for tuning the intestinal immune response to self- and non-self-antigens in the intestine. Its importance in intestinal homeostasis is illustrated by the onset of overt inflammation caused by deficiency in Treg generation, function, or stability in the gut. A substantial imbalance in Tregs has been observed in intestinal tissue during pathogenic conditions, when a tightly regulated and equilibrated system becomes dysregulated and leads to unimpeded and chronic immune responses. In this chapter, we compile and critically discuss the current knowledge on the key factors that promote Treg-mediated tolerance in the gut, such as those involved in intestinal Treg differentiation, specificity and suppressive function, and their immunophenotype during health and disease. We also discuss the current state of knowledge on Treg dysregulation in human intestine during pathological states such as inflammatory bowel disease (IBD), necrotizing enterocolitis (NEC), graft-versus-host disease (GVHD), and colorectal cancer (CRC), and how that knowledge is guiding development of Treg-targeted therapies to treat or prevent intestinal disorders.
Collapse
|
399
|
Camacho-Morales A, Caba M, García-Juárez M, Caba-Flores MD, Viveros-Contreras R, Martínez-Valenzuela C. Breastfeeding Contributes to Physiological Immune Programming in the Newborn. Front Pediatr 2021; 9:744104. [PMID: 34746058 PMCID: PMC8567139 DOI: 10.3389/fped.2021.744104] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 09/20/2021] [Indexed: 01/03/2023] Open
Abstract
The first 1,000 days in the life of a human being are a vulnerable stage where early stimuli may program adverse health outcomes in future life. Proper maternal nutrition before and during pregnancy modulates the development of the fetus, a physiological process known as fetal programming. Defective programming promotes non-communicable chronic diseases in the newborn which might be prevented by postnatal interventions such as breastfeeding. Breast milk provides distinct bioactive molecules that contribute to immune maturation, organ development, and healthy microbial gut colonization, and also secures a proper immunological response that protects against infection and inflammation in the newborn. The gut microbiome provides the most critical immune microbial stimulation in the newborn in early life, allowing a well-trained immune system and efficient metabolic settings in healthy subjects. Conversely, negative fetal programming by exposing mothers to diets rich in fat and sugar has profound effects on breast milk composition and alters the immune profiles in the newborn. At this new stage, newborns become vulnerable to immune compromise, favoring susceptibility to defective microbial gut colonization and immune response. This review will focus on the importance of breastfeeding and its immunological biocomponents that allow physiological immune programming in the newborn. We will highlight the importance of immunological settings by breastfeeding, allowing proper microbial gut colonization in the newborn as a window of opportunity to secure effective immunological response.
Collapse
Affiliation(s)
- Alberto Camacho-Morales
- Departamento de Bioquímica, Facultad de Medicina, Universidad Autonoma de Nuevo León, San Nicolás de los Garza, Mexico.,Unidad de Neurometabolismo, Centro de Investigación y Desarrollo en Ciencias de la Salud, Universidad Autonoma de Nuevo León, San Nicolás de los Garza, Mexico
| | - Mario Caba
- Centro de Investigaciones Biomédicas, Universidad Veracruzana, Xalapa, Mexico
| | - Martín García-Juárez
- Departamento de Bioquímica, Facultad de Medicina, Universidad Autonoma de Nuevo León, San Nicolás de los Garza, Mexico.,Unidad de Neurometabolismo, Centro de Investigación y Desarrollo en Ciencias de la Salud, Universidad Autonoma de Nuevo León, San Nicolás de los Garza, Mexico
| | | | | | | |
Collapse
|
400
|
Pu Z, Yang F, Wang L, Diao Y, Chen D. Advancements of compounds targeting Wnt and Notch signalling pathways in the treatment of inflammatory bowel disease and colon cancer. J Drug Target 2020; 29:507-519. [PMID: 33307848 DOI: 10.1080/1061186x.2020.1864741] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The Wnt and Notch signalling pathways are important for maintenance of intestinal epithelial barrier integrity by intestinal stem cells (ISCs). Dysfunction of these pathways is implicated in inflammatory bowel disease (IBD) and colon cancer. The objective of this review is to summarise advancements of drugs that regulate Wnt and Notch in the treatment of IBD and colon cancer. The compositions and biological effects of Wnt and Notch modulators in both ISCs and non-ISCs are discussed. The drugs, including phytochemicals, plant extracts, probiotics and synthetic compounds, have been found to regulate Wnt and Notch signalling pathways by targeting regulatory factors (including secreted frizzled-related proteins or pathway proteins such as β-catenin and γ-secretase) to alleviate IBD and colon cancer. This review highlights the potential for targeting Wnt and Notch pathways to treat IBD and colon cancer.
Collapse
Affiliation(s)
- Zhuonan Pu
- Comparative Medicine Department of Researching and Teaching, Dalian Medical University, Dalian, Liaoning, China
| | - Fang Yang
- Comparative Medicine Department of Researching and Teaching, Dalian Medical University, Dalian, Liaoning, China
| | - Liang Wang
- Comparative Medicine Department of Researching and Teaching, Dalian Medical University, Dalian, Liaoning, China
| | - Yunpeng Diao
- Colleage of Pharmacy, Dalian Medical University, Dalian, Liaoning, China
| | - Dapeng Chen
- Comparative Medicine Department of Researching and Teaching, Dalian Medical University, Dalian, Liaoning, China
| |
Collapse
|