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migratory Dendritic cells

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https://www.readbyqxmd.com/read/28182950/pseudogenization-of-the-secreted-effector-gene-ssei-confers-rapid-systemic-dissemination-of-s-typhimurium-st313-within-migratory-dendritic-cells
#1
Sarah E Carden, Gregory T Walker, Jared Honeycutt, Kyler Lugo, Trung Pham, Amanda Jacobson, Donna Bouley, Juliana Idoyaga, Renee M Tsolis, Denise Monack
Genome degradation correlates with host adaptation and systemic disease in Salmonella. Most lineages of the S. enterica subspecies Typhimurium cause gastroenteritis in humans; however, the recently emerged ST313 lineage II pathovar commonly causes systemic bacteremia in sub-Saharan Africa. ST313 lineage II displays genome degradation compared to gastroenteritis-associated lineages; yet, the mechanisms and causal genetic differences mediating these infection phenotypes are largely unknown. We find that the ST313 isolate D23580 hyperdisseminates from the gut to systemic sites, such as the mesenteric lymph nodes (MLNs), via CD11b(+) migratory dendritic cells (DCs)...
February 8, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28179507/intestinal-commensal-bacteria-mediate-lung-mucosal-immunity-and-promote-resistance-of-newborn-mice-to-infection
#2
Jerilyn Gray, Katherine Oehrle, George Worthen, Theresa Alenghat, Jeffrey Whitsett, Hitesh Deshmukh
Immature mucosal defenses contribute to increased susceptibility of newborn infants to pathogens. Sparse knowledge of age-dependent changes in mucosal immunity has hampered improvements in neonatal morbidity because of infections. We report that exposure of neonatal mice to commensal bacteria immediately after birth is required for a robust host defense against bacterial pneumonia, the leading cause of death in newborn infants. This crucial window was characterized by an abrupt influx of interleukin-22 (IL-22)-producing group 3 innate lymphoid cells (IL-22(+)ILC3) into the lungs of newborn mice...
February 8, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28087664/human-blood-cd1c-dendritic-cells-encompass-cd5high-and-cd5low-subsets-that-differ-significantly-in-phenotype-gene-expression-and-functions
#3
Xiangyun Yin, Haisheng Yu, Xiaoyang Jin, Jingyun Li, Hao Guo, Quanxing Shi, Zhao Yin, Yong Xu, Xuefei Wang, Rong Liu, Shouli Wang, Liguo Zhang
There are three major dendritic cell (DC) subsets in both humans and mice, that is, plasmacytoid DCs and two types of conventional DCs (cDCs), cDC1s and cDC2s. cDC2s are important for polarizing CD4(+) naive T cells into different subsets, including Th1, Th2, Th17, Th22, and regulatory T cells. In mice, cDC2s can be further divided into phenotypically and functionally distinct subgroups. However, subsets of human cDC2s have not been reported. In the present study, we showed that human blood CD1c(+) cDCs (cDC2s) can be further separated into two subpopulations according to their CD5 expression status...
January 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28081153/dermal-%C3%AE-%C3%AE-t-cells-do-not-freely-re-circulate-out-of-skin-and-produce-il-17-to-promote-neutrophil-infiltration-during-primary-contact-hypersensitivity
#4
Xiaodong Jiang, Chang Ook Park, Jenna Geddes Sweeney, Min Jae Yoo, Olivier Gaide, Thomas Seth Kupper
The role of mouse dermal γδ T cells in inflammatory skin disorders and host defense has been studied extensively. It is known that dendritic epidermal T cells (DETC) have a monomorphic γδ T cell receptor (TCR) and reside in murine epidermis from birth. We asked if dermal γδ cells freely re-circulated out of skin, or behaved more like dermal resident memory T cells (TRM) in mice. We found that, unlike epidermal γδ T cells (DETC), dermal γδ cells are not homogeneous with regard to TCR, express the tissue resident T cell markers CD69 and CD103, bear skin homing receptors, and produce IL-17 and IL-22...
2017: PloS One
https://www.readbyqxmd.com/read/28063036/visualization-of-the-t-cell-response-in-contact-hypersensitivity
#5
Gyohei Egawa, Kenji Kabashima
Contact hypersensitivity (CHS) is the most basic murine model for type IV hypersensitivity. This dermatitis model is mediated by hapten-sensitized, skin-infiltrating T cells. Recent intravital imaging studies have demonstrated the dynamic migratory property of skin-infiltrating T cells and the orchestrated interaction of T cells with dermal dendritic cells. Multiphoton microscopy enables the direct, three-dimensional, and minimally invasive imaging of in vivo skin samples with high spatiotemporal resolution...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28024184/serpinb9-is-a-marker-of-antigen-cross-presenting-dendritic-cells
#6
M S Mangan, J Vega-Ramos, L T Joeckel, A J Mitchell, A Rizzitelli, B Roediger, D Kaiserman, W W Weninger, J A Villadangos, P I Bird
Serpinb9 (Sb9, also called Spi6) is an intracellular inhibitor of granzyme B (grB) that protects cytotoxic lymphocytes from grB-mediated death. In addition, Sb9 is also expressed in accessory immune cells, including dendritic cells (DCs), although its role is debated. Recently, we have demonstrated that Sb9 plays a grB-independent role in cross-presentation of antigens by CD8(+) DCs. Here, using a mouse line expressing green fluorescent protein knocked in under the control of the Sb9 promoter, we demonstrate that Sb9 expression is highest in those tissue-resident and migratory DC subsets capable of cross-presentation...
December 23, 2016: Molecular Immunology
https://www.readbyqxmd.com/read/28008905/the-tumour-microenvironment-harbours-ontogenically-distinct-dendritic-cell-populations-with-opposing-effects-on-tumour-immunity
#7
Damya Laoui, Jiri Keirsse, Yannick Morias, Eva Van Overmeire, Xenia Geeraerts, Yvon Elkrim, Mate Kiss, Evangelia Bolli, Qods Lahmar, Dorine Sichien, Jens Serneels, Charlotte L Scott, Louis Boon, Patrick De Baetselier, Massimiliano Mazzone, Martin Guilliams, Jo A Van Ginderachter
Various steady state and inflamed tissues have been shown to contain a heterogeneous DC population consisting of developmentally distinct subsets, including cDC1s, cDC2s and monocyte-derived DCs, displaying differential functional specializations. The identification of functionally distinct tumour-associated DC (TADC) subpopulations could prove essential for the understanding of basic TADC biology and for envisaging targeted immunotherapies. We demonstrate that multiple mouse tumours as well as human tumours harbour ontogenically discrete TADC subsets...
December 23, 2016: Nature Communications
https://www.readbyqxmd.com/read/27890914/dendritic-cell-migration-in-health-and-disease
#8
REVIEW
Tim Worbs, Swantje I Hammerschmidt, Reinhold Förster
Dendritic cells (DCs) are potent and versatile antigen-presenting cells, and their ability to migrate is key for the initiation of protective pro-inflammatory as well as tolerogenic immune responses. Recent comprehensive studies have highlighted the importance of DC migration in the maintenance of immune surveillance and tissue homeostasis, and also in the pathogenesis of a range of diseases. In this Review, we summarize the anatomical, cellular and molecular factors that regulate the migration of different DC subsets in health and disease...
2017: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/27852743/immunogenic-dendritic-cell-generation-from-pluripotent-stem-cells-by-ectopic-expression-of-runx3
#9
Erika Takacs, Pal Boto, Emilia Simo, Tamas I Csuth, Bianka M Toth, Hadas Raveh-Amit, Attila Pap, Elek G Kovács, Julianna Kobolak, Szilvia Benkö, Andras Dinnyes, Istvan Szatmari
Application of dendritic cells (DCs) to prime responses to tumor Ags provides a promising approach to immunotherapy. However, only a limited number of DCs can be manufactured from adult precursors. In contrast, pluripotent embryonic stem (ES) cells represent an inexhaustible source for DC production, although it remains a major challenge to steer directional differentiation because ES cell-derived cells are typically immature with impaired functional capacity. Consistent with this notion, we found that mouse ES cell-derived DCs (ES-DCs) represented less mature cells compared with bone marrow-derived DCs...
January 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27826300/treatment-with-dexamethasone-and-monophosphoryl-lipid-a-removes-disease-associated-transcriptional-signatures-in-monocyte-derived-dendritic-cells-from-rheumatoid-arthritis-patients-and-confers-tolerogenic-features
#10
Paulina A García-González, Katina Schinnerling, Alejandro Sepúlveda-Gutiérrez, Jaxaira Maggi, Lorena Hoyos, Rodrigo A Morales, Ahmed M Mehdi, Hendrik J Nel, Lilian Soto, Bárbara Pesce, María Carmen Molina, Miguel Cuchacovich, Milton L Larrondo, Óscar Neira, Diego Francisco Catalán, Catharien M Hilkens, Ranjeny Thomas, Ricardo A Verdugo, Juan C Aguillón
Tolerogenic dendritic cells (TolDCs) are promising tools for therapy of autoimmune diseases, such as rheumatoid arthritis (RA). Here, we characterize monocyte-derived TolDCs from RA patients modulated with dexamethasone and activated with monophosphoryl lipid A (MPLA), referred to as MPLA-tDCs, in terms of gene expression, phenotype, cytokine profile, migratory properties, and T cell-stimulatory capacity in order to explore their suitability for cellular therapy. MPLA-tDCs derived from RA patients displayed an anti-inflammatory profile with reduced expression of co-stimulatory molecules and high IL-10/IL-12 ratio, but were capable of migrating toward the lymphoid chemokines CXCL12 and CCL19...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27820700/the-transcription-factor-nr4a3-controls-cd103-dendritic-cell-migration
#11
Kiwon Park, Zbigniew Mikulski, Goo-Young Seo, Aleksander Y Andreyev, Paola Marcovecchio, Amy Blatchley, Mitchell Kronenberg, Catherine C Hedrick
The transcription factor NR4A3 (also known as NOR-1) is a member of the Nr4a family of nuclear receptors and is expressed in myeloid and lymphoid cells. Here, we have shown that Nr4a3 is essential for the migration of CD103+ dendritic cells (DCs) to lymph nodes (LNs). Nr4a3-deficient mice had very few CD103+ migratory DCs (mDCs) present in LNs, and mixed-chimera studies revealed that this migratory defect was cell intrinsic. We further found that CD103+ DCs from Nr4a3-deficient mice displayed a marked loss of surface expression of the chemokine CCR7...
December 1, 2016: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27819270/a-microfluidic-device-for-measuring-cell-migration-towards-substrate-bound-and-soluble-chemokine-gradients
#12
Jan Schwarz, Veronika Bierbaum, Jack Merrin, Tino Frank, Robert Hauschild, Tobias Bollenbach, Savaş Tay, Michael Sixt, Matthias Mehling
Cellular locomotion is a central hallmark of eukaryotic life. It is governed by cell-extrinsic molecular factors, which can either emerge in the soluble phase or as immobilized, often adhesive ligands. To encode for direction, every cue must be present as a spatial or temporal gradient. Here, we developed a microfluidic chamber that allows measurement of cell migration in combined response to surface immobilized and soluble molecular gradients. As a proof of principle we study the response of dendritic cells to their major guidance cues, chemokines...
November 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27808089/splenic-differentiation-and-emergence-of-ccr5-cxcl9-cxcl10-monocyte-derived-dendritic-cells-in-the-brain-during-cerebral-malaria
#13
Isabella C Hirako, Marco A Ataide, Lucas Faustino, Patricia A Assis, Elizabeth W Sorensen, Hisashi Ueta, Natalia M Araújo, Gustavo B Menezes, Andrew D Luster, Ricardo T Gazzinelli
Dendritic cells have an important role in immune surveillance. After being exposed to microbial components, they migrate to secondary lymphoid organs and activate T lymphocytes. Here we show that during mouse malaria, splenic inflammatory monocytes differentiate into monocyte-derived dendritic cells (MO-DCs), which are CD11b(+)F4/80(+)CD11c(+)MHCII(high)DC-SIGN(high)Ly6c(+) and express high levels of CCR5, CXCL9 and CXCL10 (CCR5(+)CXCL9/10(+) MO-DCs). We propose that malaria-induced splenic MO-DCs take a reverse migratory route...
November 3, 2016: Nature Communications
https://www.readbyqxmd.com/read/27768071/a-cfse-based-assay-to-study-the-migration-of-murine-skin-dendritic-cells-into-draining-lymph-nodes-during-infection-with-mycobacterium-bovis-bacille-calmette-gu%C3%A3-rin
#14
Vishnu Priya Bollampalli, Susanne Nylén, Antonio Gigliotti Rothfuchs
Dendritic cells (DCs) are important for initiating immune responses, in part through their ability to acquire and shuttle antigen to the draining lymph node (DLN). The mobilization of DCs to the DLN is complex and remains to be fully elucidated during infection. Herein described is the use of an innovative, simple assay that relies on the fluorochrome 5- and 6-carboxyfluorescein diacetate succinimidyl ester (CFSE) to track the migration of DCs during footpad infection with Mycobacterium bovis Bacille Calmette-Guérin (BCG) in C57BL/6 mice...
October 9, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27683749/il-10-modulated-human-dendritic-cells-for-clinical-use-identification-of-a-stable-and-migratory-subset-with-improved-tolerogenic-activity
#15
Fanny Kryczanowsky, Verena Raker, Edith Graulich, Matthias P Domogalla, Kerstin Steinbrink
Dendritic cells (DCs) are key regulators of protective immune responses and tolerance to (self-)Ags. Therefore, the scientific rationale for the use of tolerogenic DC therapy in the fields of allergies, autoimmunity, and transplantation medicine is strong. In this study, we analyzed the tolerogenic capacity of IL-10-modulated DC (IL-10DC) subpopulations to identify a DC subset that combines potent immunosuppressive activities with valuable immune properties for clinical implementation. IL-10DCs consist of two phenotypically distinct subpopulations: CD83(high)CCR7(+) IL-10DCs and CD83(low)CCR7(-) IL-10DCs...
September 28, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27670791/the-contributions-of-lung-macrophage-and-monocyte-heterogeneity-to-influenza-pathogenesis
#16
Mubing Duan, Margaret L Hibbs, Weisan Chen
The lung myeloid cell microenvironment comprises airway, alveolar and interstitial macrophages, peripheral blood recruited lung monocytes as well as residential and migratory dendritic cell subsets. Findings from fate mapping, parabiosis, transcriptome and epigenome profiling studies now indicate that tissue macrophage and monocyte subsets possess specialized functions which differentially impact homoeostatic tolerance, pathogen detection and pathogen killing. In the lungs, residential alveolar macrophages are catabolic and immunosuppressive in contrast to the classically pro-inflammatory repertoire of lung monocytes and monocyte-derived dendritic cells recruited during acute inflammation...
October 18, 2016: Immunology and Cell Biology
https://www.readbyqxmd.com/read/27628546/-cancer-immunotherapy-using-human-induced-pluripotent-stem-cell-derived-dendritic-cells-ipsdcs-expressing-carcinoembryonic-antigen
#17
Junya Kitadani, Toshiyasu Ojima, Hiromitsu Iwamoto, Hiroaki Tabata, Mikihito Nakamori, Masaki Nakamura, Masahiro Katsuda, Motoki Miyazawa, Keiji Hayata, Hiroki Yamaue
The difficulty in obtaining a sufficient number of functional dendritic cells(DCs)is a well-known serious problem in DCbased immunotherapy. Therefore, we used induced pluripotent stem cell-derived DCs(iPSDCs). We have reported that mouse iPSDCs are equivalent to BMDCs, in terms of maturation and antigen presentation. In this study, the antitumor immune response of human iPSDCs expressing the carcinoembryonic antigen was examined, to determine its clinical application in gastrointestinal cancer. Human iPS cells were established from healthy human fibroblasts using a Sendai virus vector, and human iPSDCs were differentiated under a feeder-free culture...
September 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/27592607/plasmacytoid-dendritic-cells-induce-tolerance-predominantly-by-cargoing-antigen-to-lymph-nodes
#18
Karan Kohli, Anika Janssen, Reinhold Förster
Plasmacytoid dendritic cells (pDCs) have been shown to induce tolerance to innocuous antigens. Their migratory properties allow them to take up antigens from the periphery and transport them to the draining lymph nodes or to the thymus. However, pDC-T-cell interaction in the primary and secondary lymphoid organs still remains poorly defined. In this study, we show that resting pDCs loaded with exogenous antigen could induce tolerance when transferred intralymphatically into a single lymph node of wild-type C57BL/6 mice...
November 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/27574990/the-administration-route-is-decisive-for-the-ability-of-the-vaccine-adjuvant-caf09-to-induce-antigen-specific-cd8-t-cell-responses-the-immunological-consequences-of-the-biodistribution-profile
#19
Signe Tandrup Schmidt, Swapnil Khadke, Karen Smith Korsholm, Yvonne Perrie, Thomas Rades, Peter Andersen, Camilla Foged, Dennis Christensen
A prerequisite for vaccine-mediated induction of CD8(+) T-cell responses is the targeting of dendritic cell (DC) subsets specifically capable of cross-presenting antigen epitopes to CD8(+) T cells. Administration of a number of cationic adjuvants via the intraperitoneal (i.p.) route has been shown to result in strong CD8(+) T-cell responses, whereas immunization via e.g. the intramuscular (i.m.) or subcutaneous (s.c.) routes often stimulate weak CD8(+) T-cell responses. The hypothesis for this is that self-drainage of the adjuvant/antigen to the lymphoid organs, which takes place upon i...
October 10, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/27549170/the-lymphatic-immune-response-induced-by-the-adjuvant-as01-a-comparison-of-intramuscular-and-subcutaneous-immunization-routes
#20
Melanie R Neeland, Wei Shi, Catherine Collignon, Nadine Taubenheim, Els N T Meeusen, Arnaud M Didierlaurent, Michael J de Veer
The liposome-based adjuvant AS01 incorporates two immune stimulants, 3-O-desacyl-4'-monophosphoryl lipid A and the saponin QS-21. AS01 is under investigation for use in several vaccines in clinical development. i.m. injection of AS01 enhances immune cell activation and dendritic cell (DC) Ag presentation in the local muscle-draining lymph node. However, cellular and Ag trafficking in the lymphatic vessels that connect an i.m. injection site with the local lymph node has not been investigated. The objectives of this study were: 1) to quantify the in vivo cellular immune response induced by AS01 in an outbred ovine model, 2) to develop a lymphatic cannulation model that directly collects lymphatic fluid draining the muscle, and 3) to investigate the function of immune cells entering and exiting the lymphatic compartments after s...
October 1, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
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