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  • 1
    Publication Date: 2009-11-13
    Description: The mucosal immune system forms the largest part of the entire immune system, containing about three-quarters of all lymphocytes and producing grams of secretory IgA daily to protect the mucosal surface from pathogens. To evoke the mucosal immune response, antigens on the mucosal surface must be transported across the epithelial barrier into organized lymphoid structures such as Peyer's patches. This function, called antigen transcytosis, is mediated by specialized epithelial M cells. The molecular mechanisms promoting this antigen uptake, however, are largely unknown. Here we report that glycoprotein 2 (GP2), specifically expressed on the apical plasma membrane of M cells among enterocytes, serves as a transcytotic receptor for mucosal antigens. Recombinant GP2 protein selectively bound a subset of commensal and pathogenic enterobacteria, including Escherichia coli and Salmonella enterica serovar Typhimurium (S. Typhimurium), by recognizing FimH, a component of type I pili on the bacterial outer membrane. Consistently, these bacteria were colocalized with endogenous GP2 on the apical plasma membrane as well as in cytoplasmic vesicles in M cells. Moreover, deficiency of bacterial FimH or host GP2 led to defects in transcytosis of type-I-piliated bacteria through M cells, resulting in an attenuation of antigen-specific immune responses in Peyer's patches. GP2 is therefore a previously unrecognized transcytotic receptor on M cells for type-I-piliated bacteria and is a prerequisite for the mucosal immune response to these bacteria. Given that M cells are considered a promising target for oral vaccination against various infectious diseases, the GP2-dependent transcytotic pathway could provide a new target for the development of M-cell-targeted mucosal vaccines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hase, Koji -- Kawano, Kazuya -- Nochi, Tomonori -- Pontes, Gemilson Soares -- Fukuda, Shinji -- Ebisawa, Masashi -- Kadokura, Kazunori -- Tobe, Toru -- Fujimura, Yumiko -- Kawano, Sayaka -- Yabashi, Atsuko -- Waguri, Satoshi -- Nakato, Gaku -- Kimura, Shunsuke -- Murakami, Takaya -- Iimura, Mitsutoshi -- Hamura, Kimiyo -- Fukuoka, Shin-Ichi -- Lowe, Anson W -- Itoh, Kikuji -- Kiyono, Hiroshi -- Ohno, Hiroshi -- DK43294/DK/NIDDK NIH HHS/ -- DK56339/DK/NIDDK NIH HHS/ -- England -- Nature. 2009 Nov 12;462(7270):226-30. doi: 10.1038/nature08529.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Epithelial Immunobiology, Research Center for Allergy and Immunology, RIKEN, Kanagawa 230-0045, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19907495" target="_blank"〉PubMed〈/a〉
    Keywords: Adhesins, Escherichia coli/genetics/immunology/*metabolism ; Animals ; Antigens, Bacterial/genetics/immunology/*metabolism ; Cell Line ; Epithelial Cells/*immunology/metabolism ; Escherichia coli/immunology/metabolism ; Fimbriae Proteins/genetics/immunology/*metabolism ; GPI-Linked Proteins ; Glycoproteins ; HeLa Cells ; Humans ; Immunity, Mucosal/*immunology ; Intestines/cytology ; Membrane Glycoproteins/*metabolism ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Peyer's Patches/*cytology/immunology ; Salmonella typhimurium/genetics/immunology/metabolism ; Substrate Specificity
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2013-11-15
    Description: Gut commensal microbes shape the mucosal immune system by regulating the differentiation and expansion of several types of T cell. Clostridia, a dominant class of commensal microbe, can induce colonic regulatory T (Treg) cells, which have a central role in the suppression of inflammatory and allergic responses. However, the molecular mechanisms by which commensal microbes induce colonic Treg cells have been unclear. Here we show that a large bowel microbial fermentation product, butyrate, induces the differentiation of colonic Treg cells in mice. A comparative NMR-based metabolome analysis suggests that the luminal concentrations of short-chain fatty acids positively correlates with the number of Treg cells in the colon. Among short-chain fatty acids, butyrate induced the differentiation of Treg cells in vitro and in vivo, and ameliorated the development of colitis induced by adoptive transfer of CD4(+) CD45RB(hi) T cells in Rag1(-/-) mice. Treatment of naive T cells under the Treg-cell-polarizing conditions with butyrate enhanced histone H3 acetylation in the promoter and conserved non-coding sequence regions of the Foxp3 locus, suggesting a possible mechanism for how microbial-derived butyrate regulates the differentiation of Treg cells. Our findings provide new insight into the mechanisms by which host-microbe interactions establish immunological homeostasis in the gut.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Furusawa, Yukihiro -- Obata, Yuuki -- Fukuda, Shinji -- Endo, Takaho A -- Nakato, Gaku -- Takahashi, Daisuke -- Nakanishi, Yumiko -- Uetake, Chikako -- Kato, Keiko -- Kato, Tamotsu -- Takahashi, Masumi -- Fukuda, Noriko N -- Murakami, Shinnosuke -- Miyauchi, Eiji -- Hino, Shingo -- Atarashi, Koji -- Onawa, Satoshi -- Fujimura, Yumiko -- Lockett, Trevor -- Clarke, Julie M -- Topping, David L -- Tomita, Masaru -- Hori, Shohei -- Ohara, Osamu -- Morita, Tatsuya -- Koseki, Haruhiko -- Kikuchi, Jun -- Honda, Kenya -- Hase, Koji -- Ohno, Hiroshi -- England -- Nature. 2013 Dec 19;504(7480):446-50. doi: 10.1038/nature12721. Epub 2013 Nov 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Kanagawa 230-0045, Japan [2] The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan [3]. ; 1] RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Kanagawa 230-0045, Japan [2] The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan [3] Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan [4]. ; 1] RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Kanagawa 230-0045, Japan [2] Institute for Advanced Biosciences, Keio University, Yamagata 997-0052, Japan [3]. ; RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Kanagawa 230-0045, Japan. ; Institute for Advanced Biosciences, Keio University, Yamagata 997-0052, Japan. ; 1] RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Kanagawa 230-0045, Japan [2] Graduate School of Medical Life Science, Yokohama City University, Kanagawa 230-0045, Japan. ; Faculty of Agriculture, Shizuoka University, Shizuoka 422-8529, Japan. ; 1] RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Kanagawa 230-0045, Japan [2] PRESTO, Japan Science and Technology Agency, Saitama 332-0012, Japan. ; The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan. ; Preventative Health National Research Flagship, CSIRO Food and Nutritional Sciences, South Australia 5000, Australia. ; 1] RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Kanagawa 230-0045, Japan [2] Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan [3] Graduate School of Medical Life Science, Yokohama City University, Kanagawa 230-0045, Japan. ; 1] Graduate School of Medical Life Science, Yokohama City University, Kanagawa 230-0045, Japan [2] RIKEN Center for Sustainable Resource Science, Kanagawa 230-0045, Japan. ; 1] RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Kanagawa 230-0045, Japan [2] CREST, Japan Science and Technology Agency, Saitama 332-0012, Japan. ; 1] RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Kanagawa 230-0045, Japan [2] The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan [3] PRESTO, Japan Science and Technology Agency, Saitama 332-0012, Japan [4].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24226770" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation/drug effects ; Adoptive Transfer ; Animals ; Butyrates/analysis/*metabolism/pharmacology ; *Cell Differentiation/drug effects ; Colitis/drug therapy/pathology ; Colon/cytology/*immunology/metabolism/*microbiology ; Conserved Sequence ; Female ; *Fermentation ; Forkhead Transcription Factors/genetics ; Germ-Free Life ; Histones/metabolism ; Homeostasis/drug effects ; Intestinal Mucosa/cytology/immunology ; Lymphocyte Count ; Magnetic Resonance Spectroscopy ; Male ; Metabolome ; Mice ; Promoter Regions, Genetic/drug effects ; *Symbiosis ; T-Lymphocytes, Regulatory/*cytology/drug effects/immunology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2011-01-29
    Description: The human gut is colonized with a wide variety of microorganisms, including species, such as those belonging to the bacterial genus Bifidobacterium, that have beneficial effects on human physiology and pathology. Among the most distinctive benefits of bifidobacteria are modulation of host defence responses and protection against infectious diseases. Nevertheless, the molecular mechanisms underlying these effects have barely been elucidated. To investigate these mechanisms, we used mice associated with certain bifidobacterial strains and a simplified model of lethal infection with enterohaemorrhagic Escherichia coli O157:H7, together with an integrated 'omics' approach. Here we show that genes encoding an ATP-binding-cassette-type carbohydrate transporter present in certain bifidobacteria contribute to protecting mice against death induced by E. coli O157:H7. We found that this effect can be attributed, at least in part, to increased production of acetate and that translocation of the E. coli O157:H7 Shiga toxin from the gut lumen to the blood was inhibited. We propose that acetate produced by protective bifidobacteria improves intestinal defence mediated by epithelial cells and thereby protects the host against lethal infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fukuda, Shinji -- Toh, Hidehiro -- Hase, Koji -- Oshima, Kenshiro -- Nakanishi, Yumiko -- Yoshimura, Kazutoshi -- Tobe, Toru -- Clarke, Julie M -- Topping, David L -- Suzuki, Tohru -- Taylor, Todd D -- Itoh, Kikuji -- Kikuchi, Jun -- Morita, Hidetoshi -- Hattori, Masahira -- Ohno, Hiroshi -- England -- Nature. 2011 Jan 27;469(7331):543-7. doi: 10.1038/nature09646.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Epithelial Immunobiology, RIKEN Research Center for Allergy and Immunology, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21270894" target="_blank"〉PubMed〈/a〉
    Keywords: Acetates/*metabolism ; Animals ; Bifidobacterium/genetics/*metabolism ; Cercopithecus aethiops ; Escherichia coli Infections/microbiology/*prevention & control ; Escherichia coli O157/*physiology ; Gene Expression Profiling ; Genome, Bacterial ; Mice ; Molecular Sequence Data ; Vero Cells
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2013-07-12
    Description: Manipulation of the gut microbiota holds great promise for the treatment of inflammatory and allergic diseases. Although numerous probiotic microorganisms have been identified, there remains a compelling need to discover organisms that elicit more robust therapeutic responses, are compatible with the host, and can affect a specific arm of the host immune system in a well-controlled, physiological manner. Here we use a rational approach to isolate CD4(+)FOXP3(+) regulatory T (Treg)-cell-inducing bacterial strains from the human indigenous microbiota. Starting with a healthy human faecal sample, a sequence of selection steps was applied to obtain mice colonized with human microbiota enriched in Treg-cell-inducing species. From these mice, we isolated and selected 17 strains of bacteria on the basis of their high potency in enhancing Treg cell abundance and inducing important anti-inflammatory molecules--including interleukin-10 (IL-) and inducible T-cell co-stimulator (ICOS)--in Treg cells upon inoculation into germ-free mice. Genome sequencing revealed that the 17 strains fall within clusters IV, XIVa and XVIII of Clostridia, which lack prominent toxins and virulence factors. The 17 strains act as a community to provide bacterial antigens and a TGF-beta-rich environment to help expansion and differentiation of Treg cells. Oral administration of the combination of 17 strains to adult mice attenuated disease in models of colitis and allergic diarrhoea. Use of the isolated strains may allow for tailored therapeutic manipulation of human immune disorders.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Atarashi, Koji -- Tanoue, Takeshi -- Oshima, Kenshiro -- Suda, Wataru -- Nagano, Yuji -- Nishikawa, Hiroyoshi -- Fukuda, Shinji -- Saito, Takuro -- Narushima, Seiko -- Hase, Koji -- Kim, Sangwan -- Fritz, Joelle V -- Wilmes, Paul -- Ueha, Satoshi -- Matsushima, Kouji -- Ohno, Hiroshi -- Olle, Bernat -- Sakaguchi, Shimon -- Taniguchi, Tadatsugu -- Morita, Hidetoshi -- Hattori, Masahira -- Honda, Kenya -- England -- Nature. 2013 Aug 8;500(7461):232-6. doi: 10.1038/nature12331. Epub 2013 Jul 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉RIKEN Center for Integrative Medical Sciences (IMS-RCAI), 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23842501" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Cell Proliferation ; Clostridium/classification/genetics/*immunology ; Colitis/microbiology/pathology ; Colon/immunology/microbiology ; Disease Models, Animal ; Feces/microbiology ; Germ-Free Life ; Humans ; Inducible T-Cell Co-Stimulator Protein/metabolism ; Interleukin-10/metabolism ; Male ; Metagenome/genetics/*immunology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mice, SCID ; RNA, Ribosomal, 16S/genetics ; Rats ; Rats, Inbred F344 ; T-Lymphocytes, Regulatory/cytology/*physiology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2015-07-15
    Description: Changes to the symbiotic microbiota early in life, or the absence of it, can lead to exacerbated type 2 immunity and allergic inflammations. Although it is unclear how the microbiota regulates type 2 immunity, it is a strong inducer of proinflammatory T helper 17 (T(H)17) cells and regulatory T cells (T(regs)) in the intestine. Here, we report that microbiota-induced T(regs) express the nuclear hormone receptor RORgammat and differentiate along a pathway that also leads to T(H)17 cells. In the absence of RORgammat(+) T(regs), T(H)2-driven defense against helminths is more efficient, whereas T(H)2-associated pathology is exacerbated. Thus, the microbiota regulates type 2 responses through the induction of type 3 RORgammat(+) T(regs) and T(H)17 cells and acts as a key factor in balancing immune responses at mucosal surfaces.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ohnmacht, Caspar -- Park, Joo-Hong -- Cording, Sascha -- Wing, James B -- Atarashi, Koji -- Obata, Yuuki -- Gaboriau-Routhiau, Valerie -- Marques, Rute -- Dulauroy, Sophie -- Fedoseeva, Maria -- Busslinger, Meinrad -- Cerf-Bensussan, Nadine -- Boneca, Ivo G -- Voehringer, David -- Hase, Koji -- Honda, Kenya -- Sakaguchi, Shimon -- Eberl, Gerard -- New York, N.Y. -- Science. 2015 Aug 28;349(6251):989-93. doi: 10.1126/science.aac4263. Epub 2015 Jul 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut Pasteur, Microenvironment and Immunity Unit, 75724 Paris, France. ; Laboratory of Experimental Immunology, Immunology Frontier Research Center, Osaka University, Suita 565-0871, Japan. ; RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Yokohama, Kanagawa 230-0045, Japan. PRESTO, Japan Science and Technology Agency, Saitama 332-0012, Japan. ; The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan. ; INSERM, U1163, Laboratory of Intestinal Immunity, Paris, France. Universite Paris Descartes-Sorbonne Paris Cite and Institut Imagine, Paris, France. INRA Micalis UMR1319, Jouy-en-Josas, France. ; Center of Allergy and Environment (ZAUM), Technische Universitat and Helmholtz Zentrum Munchen, Munich, Germany. ; Research Institute of Molecular Pathology, Vienna Biocenter, 1030 Vienna, Austria. ; INSERM, U1163, Laboratory of Intestinal Immunity, Paris, France. Universite Paris Descartes-Sorbonne Paris Cite and Institut Imagine, Paris, France. ; Institut Pasteur, Biology and Genetics of Bacterial Cell Wall, 75724 Paris, France. INSERM, Groupe Avenir, 75015 Paris, France. ; Department of Infection Biology at the Institute of Clinical Microbiology, Immunology and Hygiene, University Clinic Erlangen and Friedrich-Alexander University Erlangen-Nuremberg, 91054 Erlangen, Germany. ; RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Yokohama, Kanagawa 230-0045, Japan. CREST, Japan Science and Technology Agency, 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan. ; Laboratory of Experimental Immunology, Immunology Frontier Research Center, Osaka University, Suita 565-0871, Japan. Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan. ; Institut Pasteur, Microenvironment and Immunity Unit, 75724 Paris, France. gerard.eberl@pasteur.fr.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26160380" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Colitis, Ulcerative/immunology ; Colon/immunology/microbiology ; Germ-Free Life ; Homeostasis ; *Immunity, Mucosal ; Intestinal Mucosa/*immunology/*microbiology ; Intestine, Small/immunology/microbiology ; Intestines/immunology/*microbiology ; Mice ; Microbiota/*immunology ; Models, Immunological ; Nematospiroides dubius ; Nuclear Receptor Subfamily 1, Group F, Member 3/*metabolism ; Specific Pathogen-Free Organisms ; Strongylida Infections/immunology ; T-Lymphocyte Subsets/immunology ; T-Lymphocytes, Regulatory/*immunology/metabolism ; Th17 Cells/immunology ; Th2 Cells/immunology ; Vitamin A/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 11-12 (Feb. 2006), p. 627-630 
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Monodisperse polystyrene (PS) particle multilayer with coherent structure was[removed info]constructedby Langmuir-Blodgett (LB) method. The reflectance spectra of the particle multilayer with variousincident angles indicated that the constructed particle multilayer showed a typical optical character ofthe conventional multilayer having different refractive index. It was suggested that the particlemultilayer was treated as a multilayer constructed by polymer layer and air layer. The fact wasstrongly supported by a simulation of the corresponding model, which was designed for analyzingoptical characterization of the particle multilayer. The refractive index of the particle multilayer withnickel ion was also discussed by simulation, suggesting that a theoretical designing of the particlemultilayer with various refractive index would be possible. It was also suggested that coordination ofmetal ion on the surface of the particle would be enhanced its contribution for increasing the refractiveindex
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  • 7
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 181 (1991), S. 1110-1117 
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 183 (1992), S. 626-631 
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 0014-5793
    Keywords: Basolateral membrane ; Diabetes ; GLUT2 ; High-glucose infusion ; Rat intestine ; d-Glucose transport
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Solid State Communications 59 (1986), S. 85-89 
    ISSN: 0038-1098
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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