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  1. Article ; Online: Epithelial-neuronal-immune cell interactions: Implications for immunity, inflammation, and tissue homeostasis at mucosal sites.

    Emanuel, Elizabeth / Arifuzzaman, Mohammad / Artis, David

    The Journal of allergy and clinical immunology

    2024  

    Abstract: The epithelial lining of the respiratory tract and intestine provides a critical physical barrier to protect host tissues against environmental insults, including dietary antigens, allergens, chemicals, and microorganisms. In addition, specialized ... ...

    Abstract The epithelial lining of the respiratory tract and intestine provides a critical physical barrier to protect host tissues against environmental insults, including dietary antigens, allergens, chemicals, and microorganisms. In addition, specialized epithelial cells communicate directly with hematopoietic and neuronal cells. These epithelial-immune and epithelial-neuronal interactions control host immune responses and have important implications for inflammatory conditions associated with defects in the epithelial barrier, including asthma, allergy, and inflammatory bowel diseases. In this review, we discuss emerging research that identifies the mechanisms and impact of epithelial-immune and epithelial-neuronal cross talk in regulating immunity, inflammation, and tissue homeostasis at mucosal barrier surfaces. Understanding the regulation and impact of these pathways could provide new therapeutic targets for inflammatory diseases at mucosal sites.
    Language English
    Publishing date 2024-02-16
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 121011-7
    ISSN 1097-6825 ; 1085-8725 ; 0091-6749
    ISSN (online) 1097-6825 ; 1085-8725
    ISSN 0091-6749
    DOI 10.1016/j.jaci.2024.02.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Nutritional regulation of microbiota-derived metabolites: Implications for immunity and inflammation.

    Arifuzzaman, Mohammad / Collins, Nicholas / Guo, Chun-Jun / Artis, David

    Immunity

    2024  Volume 57, Issue 1, Page(s) 14–27

    Abstract: Nutrition profoundly shapes immunity and inflammation across the lifespan of mammals, from pre- and post-natal periods to later life. Emerging insights into diet-microbiota interactions indicate that nutrition has a dominant influence on the composition- ... ...

    Abstract Nutrition profoundly shapes immunity and inflammation across the lifespan of mammals, from pre- and post-natal periods to later life. Emerging insights into diet-microbiota interactions indicate that nutrition has a dominant influence on the composition-and metabolic output-of the intestinal microbiota, which in turn has major consequences for host immunity and inflammation. Here, we discuss recent findings that support the concept that dietary effects on microbiota-derived metabolites potently alter immune responses in health and disease. We discuss how specific dietary components and metabolites can be either pro-inflammatory or anti-inflammatory in a context- and tissue-dependent manner during infection, chronic inflammation, and cancer. Together, these studies emphasize the influence of diet-microbiota crosstalk on immune regulation that will have a significant impact on precision nutrition approaches and therapeutic interventions for managing inflammation, infection, and cancer immunotherapy.
    MeSH term(s) Animals ; Inflammation ; Microbiota ; Gastrointestinal Microbiome ; Cross Reactions ; Neoplasms/therapy ; Mammals
    Language English
    Publishing date 2024-01-09
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 1217235-2
    ISSN 1097-4180 ; 1074-7613
    ISSN (online) 1097-4180
    ISSN 1074-7613
    DOI 10.1016/j.immuni.2023.12.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Dietary fiber is a critical determinant of pathologic ILC2 responses and intestinal inflammation.

    Arifuzzaman, Mohammad / Won, Tae Hyung / Yano, Hiroshi / Uddin, Jazib / Emanuel, Elizabeth R / Hu, Elin / Zhang, Wen / Li, Ting-Ting / Jin, Wen-Bing / Grier, Alex / Kashyap, Sanchita / Guo, Chun-Jun / Schroeder, Frank C / Artis, David

    The Journal of experimental medicine

    2024  Volume 221, Issue 5

    Abstract: Innate lymphoid cells (ILCs) can promote host defense, chronic inflammation, or tissue protection and are regulated by cytokines and neuropeptides. However, their regulation by diet and microbiota-derived signals remains unclear. We show that an inulin ... ...

    Abstract Innate lymphoid cells (ILCs) can promote host defense, chronic inflammation, or tissue protection and are regulated by cytokines and neuropeptides. However, their regulation by diet and microbiota-derived signals remains unclear. We show that an inulin fiber diet promotes Tph1-expressing inflammatory ILC2s (ILC2INFLAM) in the colon, which produce IL-5 but not tissue-protective amphiregulin (AREG), resulting in the accumulation of eosinophils. This exacerbates inflammation in a murine model of intestinal damage and inflammation in an ILC2- and eosinophil-dependent manner. Mechanistically, the inulin fiber diet elevated microbiota-derived bile acids, including cholic acid (CA) that induced expression of ILC2-activating IL-33. In IBD patients, bile acids, their receptor farnesoid X receptor (FXR), IL-33, and eosinophils were all upregulated compared with controls, implicating this diet-microbiota-ILC2 axis in human IBD pathogenesis. Together, these data reveal that dietary fiber-induced changes in microbial metabolites operate as a rheostat that governs protective versus pathologic ILC2 responses with relevance to precision nutrition for inflammatory diseases.
    MeSH term(s) Humans ; Animals ; Mice ; Immunity, Innate ; Interleukin-33 ; Inulin ; Lymphocytes ; Dietary Fiber ; Bile Acids and Salts ; Inflammation ; Inflammatory Bowel Diseases
    Chemical Substances Interleukin-33 ; Inulin (9005-80-5) ; Dietary Fiber ; Bile Acids and Salts
    Language English
    Publishing date 2024-03-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 218343-2
    ISSN 1540-9538 ; 0022-1007
    ISSN (online) 1540-9538
    ISSN 0022-1007
    DOI 10.1084/jem.20232148
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Microbiota metabolism of intestinal amino acids impacts host nutrient homeostasis and physiology.

    Li, Ting-Ting / Chen, Xi / Huo, Da / Arifuzzaman, Mohammad / Qiao, Shanshan / Jin, Wen-Bing / Shi, Huiqing / Li, Xin V / Iliev, Iliyan D / Artis, David / Guo, Chun-Jun

    Cell host & microbe

    2024  

    Abstract: The intestine and liver are thought to metabolize dietary nutrients and regulate host nutrient homeostasis. Here, we find that the gut microbiota also reshapes the host amino acid (aa) landscape via efficiently metabolizing intestinal aa. To identify the ...

    Abstract The intestine and liver are thought to metabolize dietary nutrients and regulate host nutrient homeostasis. Here, we find that the gut microbiota also reshapes the host amino acid (aa) landscape via efficiently metabolizing intestinal aa. To identify the responsible microbes/genes, we developed a metabolomics-based assay to screen 104 commensals and identified candidates that efficiently utilize aa. Using genetics, we identified multiple responsible metabolic genes in phylogenetically diverse microbes. By colonizing germ-free mice with the wild-type strain and their isogenic mutant deficient in individual aa-metabolizing genes, we found that these genes regulate the availability of gut and circulatory aa. Notably, microbiota genes for branched-chain amino acids (BCAAs) and tryptophan metabolism indirectly affect host glucose homeostasis via peripheral serotonin. Collectively, at single-gene level, this work characterizes a microbiota-encoded metabolic activity that affects host nutrient homeostasis and provides a roadmap to interrogate microbiota-dependent activity to improve human health.
    Language English
    Publishing date 2024-04-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2278004-X
    ISSN 1934-6069 ; 1931-3128
    ISSN (online) 1934-6069
    ISSN 1931-3128
    DOI 10.1016/j.chom.2024.04.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Contrast agents for x-ray luminescence computed tomography.

    Lun, Michael C / Ranasinghe, Meenakshi / Arifuzzaman, Mohammad / Fang, Yile / Guo, Yiping / Anker, Jeffrey N / Li, Changqing

    Applied optics

    2021  Volume 60, Issue 23, Page(s) 6769–6775

    Abstract: Imaging probes are an important consideration for any type of contrast agent-based imaging method. X-ray luminescence imaging (XLI) and x-ray luminescence computed tomography (XLCT) are both contrast agent-based imaging methods that employ x-ray ... ...

    Abstract Imaging probes are an important consideration for any type of contrast agent-based imaging method. X-ray luminescence imaging (XLI) and x-ray luminescence computed tomography (XLCT) are both contrast agent-based imaging methods that employ x-ray excitable scintillating imaging probes that emit light to be measured for optical imaging. In this work, we compared the performance of several select imaging probes, both commercial and self-synthesized, for application in XLI/XLCT imaging. Commercially available cadmium telluride quantum dots (CdTe QDs) and europium-doped gadolinium oxysulfide (GOS:Eu) microphosphor as well as synthesized
    MeSH term(s) Cadmium Compounds/chemistry ; Contrast Media/chemistry ; Erbium/chemistry ; Europium/chemistry ; Fluorides/chemistry ; Gadolinium/chemistry ; Image Processing, Computer-Assisted/methods ; Luminescence ; Optical Imaging/methods ; Phantoms, Imaging ; Quantum Dots ; Tellurium/chemistry ; Tomography, X-Ray Computed/methods
    Chemical Substances Cadmium Compounds ; Contrast Media ; NaGdF4 ; gadolinium sulfoxylate (12339-07-0) ; Europium (444W947O8O) ; Erbium (77B218D3YE) ; Gadolinium (AU0V1LM3JT) ; Tellurium (NQA0O090ZJ) ; Fluorides (Q80VPU408O) ; cadmium telluride (STG188WO13)
    Language English
    Publishing date 2021-09-23
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4522
    ISSN (online) 1539-4522
    DOI 10.1364/AO.431080
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: The ChAT-acetylcholine pathway promotes group 2 innate lymphoid cell responses and anti-helminth immunity.

    Chu, Coco / Parkhurst, Christopher N / Zhang, Wen / Zhou, Lei / Yano, Hiroshi / Arifuzzaman, Mohammad / Artis, David

    Science immunology

    2021  Volume 6, Issue 57

    Abstract: Group 2 innate lymphoid cells (ILC2s) reside in multiple tissues, including lymphoid organs and barrier surfaces, and secrete type 2 cytokines including interleukin-5 (IL-5), IL-9, and IL-13. These cells participate in multiple physiological processes ... ...

    Abstract Group 2 innate lymphoid cells (ILC2s) reside in multiple tissues, including lymphoid organs and barrier surfaces, and secrete type 2 cytokines including interleukin-5 (IL-5), IL-9, and IL-13. These cells participate in multiple physiological processes including allergic inflammation, tissue repair, metabolic homeostasis, and host defense against helminth infections. Recent studies indicate that neurotransmitters and neuropeptides can play an important role in regulating ILC2 responses; however, the mechanisms that underlie these processes in vivo remain incompletely defined. Here, we identify that activated ILC2s up-regulate choline acetyltransferase (ChAT)-the enzyme responsible for the biosynthesis of acetylcholine (ACh)-after infection with the helminth parasite
    MeSH term(s) Acetylcholine/metabolism ; Animals ; Biomarkers ; Choline O-Acetyltransferase/genetics ; Choline O-Acetyltransferase/metabolism ; Cytokines/metabolism ; Disease Models, Animal ; Eosinophils/immunology ; Eosinophils/metabolism ; Gene Expression ; Helminthiasis/immunology ; Helminthiasis/metabolism ; Helminthiasis/parasitology ; Helminths/immunology ; Host-Parasite Interactions/immunology ; Humans ; Immunity, Innate ; Immunophenotyping ; Lymphocyte Subsets/immunology ; Lymphocyte Subsets/metabolism ; Mice
    Chemical Substances Biomarkers ; Cytokines ; Choline O-Acetyltransferase (EC 2.3.1.6) ; Acetylcholine (N9YNS0M02X)
    Language English
    Publishing date 2021-03-05
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ISSN 2470-9468
    ISSN (online) 2470-9468
    DOI 10.1126/sciimmunol.abe3218
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Focused x-ray luminescence imaging system for small animals based on a rotary gantry.

    Lun, Michael C / Cong, Wenxiang / Arifuzzaman, Mohammad / Ranasinghe, Meenakshi / Bhattacharya, Sriparna / Anker, Jeffrey N / Wang, Ge / Li, Changqing

    Journal of biomedical optics

    2021  Volume 26, Issue 3

    Abstract: Significance: The ability to detect and localize specific molecules through tissue is important for elucidating the molecular basis of disease and treatment. Unfortunately, most current molecular imaging tools in tissue either lack high spatial ... ...

    Abstract Significance: The ability to detect and localize specific molecules through tissue is important for elucidating the molecular basis of disease and treatment. Unfortunately, most current molecular imaging tools in tissue either lack high spatial resolution (e.g., diffuse optical fluorescence tomography or positron emission tomography) or lack molecular sensitivity (e.g., micro-computed tomography, μCT). X-ray luminescence imaging emerged about 10 years ago to address this issue by combining the molecular sensitivity of optical probes with the high spatial resolution of x-ray imaging through tissue. In particular, x-ray luminescence computed tomography (XLCT) has been demonstrated as a powerful technique for the high-resolution imaging of deeply embedded contrast agents in three dimensions (3D) for small-animal imaging.
    Aim: To facilitate the translation of XLCT for small-animal imaging, we have designed and built a small-animal dedicated focused x-ray luminescence tomography (FXLT) scanner with a μCT scanner, synthesized bright and biocompatible nanophosphors as contrast agents, and have developed a deep-learning-based reconstruction algorithm.
    Approach: The proposed FXLT imaging system was designed using computer-aided design software and built according to specifications. NaGdF4 nanophosphors doped with europium or terbium were synthesized with a silica shell for increased biocompatibility and functionalized with biotin. A deep-learning-based XLCT image reconstruction was also developed based on the residual neural network as a data synthesis method of projection views from few-view data to enhance the reconstructed image quality.
    Results: We have built the FXLT scanner for small-animal imaging based on a rotational gantry. With all major imaging components mounted, the motor controlling the gantry can be used to rotate the system with a high accuracy. The synthesized nanophosphors displayed distinct x-ray luminescence emission, which enables multi-color imaging, and has successfully been bound to streptavidin-coated substrates. Lastly, numerical simulations using the proposed deep-learning-based reconstruction algorithm has demonstrated a clear enhancement in the reconstructed image quality.
    Conclusions: The designed FXLT scanner, synthesized nanophosphors, and deep-learning-based reconstruction algorithm show great potential for the high-resolution molecular imaging of small animals.
    MeSH term(s) Algorithms ; Animals ; Fluorides ; Gadolinium ; Image Processing, Computer-Assisted ; Luminescence ; Phantoms, Imaging ; X-Ray Microtomography ; X-Rays
    Chemical Substances NaGdF4 ; Gadolinium (AU0V1LM3JT) ; Fluorides (Q80VPU408O)
    Language English
    Publishing date 2021-03-19
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 1309154-2
    ISSN 1560-2281 ; 1083-3668
    ISSN (online) 1560-2281
    ISSN 1083-3668
    DOI 10.1117/1.JBO.26.3.036004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Genetic manipulation of gut microbes enables single-gene interrogation in a complex microbiome.

    Jin, Wen-Bing / Li, Ting-Ting / Huo, Da / Qu, Sophia / Li, Xin V / Arifuzzaman, Mohammad / Lima, Svetlana F / Shi, Hui-Qing / Wang, Aolin / Putzel, Gregory G / Longman, Randy S / Artis, David / Guo, Chun-Jun

    Cell

    2022  Volume 185, Issue 3, Page(s) 547–562.e22

    Abstract: Hundreds of microbiota genes are associated with host biology/disease. Unraveling the causal contribution of a microbiota gene to host biology remains difficult because many are encoded by nonmodel gut commensals and not genetically targetable. A general ...

    Abstract Hundreds of microbiota genes are associated with host biology/disease. Unraveling the causal contribution of a microbiota gene to host biology remains difficult because many are encoded by nonmodel gut commensals and not genetically targetable. A general approach to identify their gene transfer methodology and build their gene manipulation tools would enable mechanistic dissections of their impact on host physiology. We developed a pipeline that identifies the gene transfer methods for multiple nonmodel microbes spanning five phyla, and we demonstrated the utility of their genetic tools by modulating microbiome-derived short-chain fatty acids and bile acids in vitro and in the host. In a proof-of-principle study, by deleting a commensal gene for bile acid synthesis in a complex microbiome, we discovered an intriguing role of this gene in regulating colon inflammation. This technology will enable genetically engineering the nonmodel gut microbiome and facilitate mechanistic dissection of microbiota-host interactions.
    MeSH term(s) Animals ; Bile Acids and Salts/metabolism ; CRISPR-Cas Systems/genetics ; Clostridium/genetics ; Colitis/chemically induced ; Colitis/microbiology ; Colitis/pathology ; Dextran Sulfate ; Drug Resistance, Microbial/genetics ; Female ; Gastrointestinal Microbiome/genetics ; Gene Expression Regulation, Bacterial ; Gene Transfer Techniques ; Genes, Bacterial ; Germ-Free Life ; Inflammation/pathology ; Intestines/pathology ; Male ; Metabolome/genetics ; Metagenomics ; Mice, Inbred C57BL ; Mice, Knockout ; Mutagenesis, Insertional/genetics ; Mutation/genetics ; RNA, Ribosomal, 16S/genetics ; Transcription, Genetic ; Mice
    Chemical Substances Bile Acids and Salts ; RNA, Ribosomal, 16S ; Dextran Sulfate (9042-14-2)
    Language English
    Publishing date 2022-01-19
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2021.12.035
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Genetic manipulation of gut microbes enables single-gene interrogation in a complex microbiome

    Jin, Wen-Bing / Li, Ting-Ting / Huo, Da / Qu, Sophia / Li, Xin V. / Arifuzzaman, Mohammad / Lima, Svetlana F. / Shi, Hui-Qing / Wang, Aolin / Putzel, Gregory G. / Longman, Randy S. / Artis, David / Guo, Chun-Jun

    Cell. 2022 Feb. 03, v. 185, no. 3

    2022  

    Abstract: Hundreds of microbiota genes are associated with host biology/disease. Unraveling the causal contribution of a microbiota gene to host biology remains difficult because many are encoded by nonmodel gut commensals and not genetically targetable. A general ...

    Abstract Hundreds of microbiota genes are associated with host biology/disease. Unraveling the causal contribution of a microbiota gene to host biology remains difficult because many are encoded by nonmodel gut commensals and not genetically targetable. A general approach to identify their gene transfer methodology and build their gene manipulation tools would enable mechanistic dissections of their impact on host physiology. We developed a pipeline that identifies the gene transfer methods for multiple nonmodel microbes spanning five phyla, and we demonstrated the utility of their genetic tools by modulating microbiome-derived short-chain fatty acids and bile acids in vitro and in the host. In a proof-of-principle study, by deleting a commensal gene for bile acid synthesis in a complex microbiome, we discovered an intriguing role of this gene in regulating colon inflammation. This technology will enable genetically engineering the nonmodel gut microbiome and facilitate mechanistic dissection of microbiota-host interactions.
    Keywords bile ; bile acids ; colon ; dissection ; gene transfer ; genes ; genetic engineering ; inflammation ; intestinal microorganisms ; microbiome ; physiology
    Language English
    Dates of publication 2022-0203
    Size p. 547-562.e22.
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2021.12.035
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: Transcutaneous Vaccination with Conjugate Typhoid Vaccine Vi-DT Induces Systemic, Mucosal, and Memory Anti-Polysaccharide Responses.

    Bhuiyan, Md Saruar / Kalsy, Anuj / Arifuzzaman, Mohammad / Charles, Richelle C / Harris, Jason B / Calderwood, Stephen B / Qadri, Firdausi / Ryan, Edward T

    The American journal of tropical medicine and hygiene

    2020  Volume 103, Issue 3, Page(s) 1032–1038

    Abstract: Transcutaneous vaccination can induce both mucosal and systemic immune responses. However, there are few data on anti-polysaccharide responses following transcutaneous vaccination of polysaccharides, despite the role that anti-polysaccharide responses ... ...

    Abstract Transcutaneous vaccination can induce both mucosal and systemic immune responses. However, there are few data on anti-polysaccharide responses following transcutaneous vaccination of polysaccharides, despite the role that anti-polysaccharide responses play in protecting against intestinal mucosal and respiratory pathogens. Whether transcutaneous vaccination with a conjugate polysaccharide vaccine would be able to induce memory responses is also unknown. To address this, we transcutaneously vaccinated mice with virulence antigen (Vi) polysaccharide of
    MeSH term(s) Administration, Cutaneous ; Animals ; Antibodies, Bacterial/blood ; Disease Models, Animal ; Female ; Humans ; Immunity, Humoral/drug effects ; Immunity, Mucosal/drug effects ; Immunization Schedule ; Immunoglobulin A/blood ; Immunoglobulin G/blood ; Immunologic Memory/drug effects ; Mice ; Polysaccharides, Bacterial/chemistry ; Polysaccharides, Bacterial/immunology ; Salmonella typhi/drug effects ; Salmonella typhi/immunology ; Salmonella typhi/pathogenicity ; Typhoid Fever/immunology ; Typhoid Fever/microbiology ; Typhoid Fever/prevention & control ; Typhoid-Paratyphoid Vaccines/administration & dosage ; Typhoid-Paratyphoid Vaccines/biosynthesis ; Vaccination/methods ; Vaccines, Conjugate
    Chemical Substances Antibodies, Bacterial ; Immunoglobulin A ; Immunoglobulin G ; Polysaccharides, Bacterial ; Typhoid-Paratyphoid Vaccines ; Vaccines, Conjugate
    Language English
    Publishing date 2020-07-28
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2942-7
    ISSN 1476-1645 ; 0002-9637
    ISSN (online) 1476-1645
    ISSN 0002-9637
    DOI 10.4269/ajtmh.19-0798
    Database MEDical Literature Analysis and Retrieval System OnLINE

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