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https://www.readbyqxmd.com/read/29713652/natural-killer-cells-from-malignant-pleural-effusion-are-endowed-with-a-decidual-like-proangiogenic-polarization
#1
Annalisa Bosi, Silvia Zanellato, Barbara Bassani, Adriana Albini, Alessandra Musco, Maria Cattoni, Matteo Desio, Elisa Nardecchia, Davide Giuseppe D'Urso, Andrea Imperatori, Lorenzo Dominioni, Douglas M Noonan, Lorenzo Mortara, Antonino Bruno
Natural killer (NK) cells are crucial in tumor recognition and eradication, but their activity is impaired in cancer patients, becoming poorly cytotoxic. A particular type of NK cells, from the decidua, has low cytotoxicity and shows proangiogenic functions. We investigated whether NK cells from peripheral blood (PB) and pleural effusions of patients develop decidual-like NK phenotype and whether exposure to IL-2 can restore their killing ability in the presence of pleural fluids. NK cells from pleural effusion of patients with inflammatory conditions (iPE, n  = 18), primary tumor (ptPE, n  = 18), and metastatic tumor (tmPE, n  = 27) acquired the CD56bright CD16- phenotype...
2018: Journal of Immunology Research
https://www.readbyqxmd.com/read/29562771/collagenase-impacts-the-quantity-and-quality-of-native-mesenchymal-stem-stromal-cells-derived-during-processing-of-umbilical-cord-tissue
#2
Rouzbeh R Taghizadeh, Kyle J Cetrulo, Curtis L Cetrulo
Enzymes are commonly used as a biochemical means to liberate cells from a host of tissues for use in in vitro studies and/or in vivo transplantations. However, very little understanding exists of the biological and functional effects that enzymes have on cells during the process of releasing the native cells from a given tissue. One specific reason for this is that no technology has existed as a nonenzymatic control to compare baseline biology and function for a given processed tissue. We have developed a sterile, onetime use, disposable system (referred to as the AuxoCell Processing System or AC:Px®) that allows for processing of solid tissue in a closed, standardized system using mechanical means to liberate cells without the need and/or use of any biochemical, enzymatic digestion...
January 2018: Cell Transplantation
https://www.readbyqxmd.com/read/29510155/nasal-route-favors-the-induction-of-cd4-t-cell-responses-in-the-liver-of-hbv-carrier-mice-immunized-with-a-recombinant-hepatitis-b-surface-and-core-based-therapeutic-vaccine
#3
Maryline Bourgine, Sandrine Crabe, Yadira Lobaina, Gerardo Guillen, Julio Cesar Aguilar, Marie-Louise Michel
Immunization routes and number of doses remain largely unexplored in therapeutic vaccination. The aim of the present work is to evaluate their impact on immune responses in naïve and hepatitis B virus (HBV)-carrier mouse models following immunization with a non-adjuvanted recombinant vaccine comprising the hepatitis B surface (HBsAg) and core (HBcAg) antigens. Mice were immunized either by intranasal (i.n.), subcutaneous (s.c.) or simultaneous (i.n. + s.c.) routes. Humoral immunity was detected in all the animal models with the induction of a potent antibody (Ab) response against HBcAg, which was stronger than the anti-HBs response...
May 2018: Antiviral Research
https://www.readbyqxmd.com/read/29262349/natural-killer-cells-promote-fetal-development-through-the-secretion-of-growth-promoting-factors
#4
Binqing Fu, Yonggang Zhou, Xiang Ni, Xianhong Tong, Xiuxiu Xu, Zhongjun Dong, Rui Sun, Zhigang Tian, Haiming Wei
Natural killer (NK) cells are present in large populations at the maternal-fetal interface during early pregnancy. However, the role of NK cells in fetal growth is unclear. Here, we have identified a CD49a+ Eomes+ subset of NK cells that secreted growth-promoting factors (GPFs), including pleiotrophin and osteoglycin, in both humans and mice. The crosstalk between HLA-G and ILT2 served as a stimulus for GPF-secreting function of this NK cell subset. Decreases in this GPF-secreting NK cell subset impaired fetal development, resulting in fetal growth restriction...
December 19, 2017: Immunity
https://www.readbyqxmd.com/read/29213290/effect-of-isolation-technique-and-location-on-the-phenotype-of-human-corneal-stroma-derived-cells
#5
Richárd Nagymihály, Zoltán Veréb, Andrea Facskó, Morten C Moe, Goran Petrovski
Purpose: To determine the effect of the isolation technique and location upon the phenotype of human corneal stroma-derived cells (CSCs). Methods: CSCs were isolated from the corneal stroma center and periphery using the explant or enzymatic digestion technique. The native tissue was stained for functional markers, while cultured cells were analysed by FACS. PCR was used to determine gene expression in the cultured versus native cells. Results: The native stroma was positive for α -actinin, ALDH1A1, CD31, CD34, Collagen I, and Vimentin...
2017: Stem Cells International
https://www.readbyqxmd.com/read/29056444/long-lived-tissue-resident-hiv-1-specific-memory-cd8-t-cells-are-generated-by-skin-immunization-with-live-virus-vectored-microneedle-arrays
#6
Marija Zaric, Pablo Daniel Becker, Catherine Hervouet, Petya Kalcheva, Barbara Ibarzo Yus, Clement Cocita, Lauren Alexandra O'Neill, Sung-Yun Kwon, Linda Sylvia Klavinskis
The generation of tissue resident memory (TRM ) cells at the body surfaces to provide a front line defence against invading pathogens represents an important goal in vaccine development for a wide variety of pathogens. It has been widely assumed that local vaccine delivery to the mucosae is necessary to achieve that aim. Here we characterise a novel micro-needle array (MA) delivery system fabricated to deliver a live recombinant human adenovirus type 5 vaccine vector (AdHu5) encoding HIV-1 gag. We demonstrate rapid dissolution kinetics of the microneedles in skin...
December 28, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28952190/il-12-and-il-15-induce-the-expression-of-cxcr6-and-cd49a-on-peripheral-natural-killer-cells
#7
Theresa Hydes, Angela Noll, Gabriela Salinas-Riester, Mohammed Abuhilal, Thomas Armstrong, Zaed Hamady, John Primrose, Arjun Takhar, Lutz Walter, Salim I Khakoo
INTRODUCTION: Murine hepatic NK cells exhibit adaptive features, with liver-specific adhesion molecules CXCR6 and CD49a acting as surface markers. METHODS: We investigated human liver-resident CXCR6+ and CD49a+ NK cells using RNA sequencing, flow cytometry, and functional analysis. We further assessed the role of cytokines in generating NK cells with these phenotypes from the peripheral blood. RESULTS: Hepatic CD49a+ NK cells could be induced using cytokines and produce high quantities of IFNγ and TNFα, in contrast to hepatic CXCR6+ NK cells...
March 2018: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/28792982/proliferative-capacity-exhibited-by-human-liver-resident-cd49a-cd25-nk-cells
#8
Glòria Martrus, Tobias Kautz, Sebastian Lunemann, Laura Richert, Laura Glau, Wilhelm Salzberger, Hanna Goebels, Annika Langeneckert, Leonard Hess, Tobias Poch, Christoph Schramm, Karl J Oldhafer, Martina Koch, Eva Tolosa, Björn Nashan, Marcus Altfeld
The recruitment and retention of Natural Killer (NK) cells in the liver are thought to play an important role during hepatotropic infections and liver cirrhosis. The aims of this study were to determine differences between liver-derived and peripheral blood-derived NK cells in the context of liver inflammation and cirrhosis. We conducted a prospective dual-center cross-sectional study in patients undergoing liver transplantation or tumor-free liver resections, in which both liver tissue and peripheral blood samples were obtained from each consenting study participants...
2017: PloS One
https://www.readbyqxmd.com/read/28759001/tumor-immunoevasion-by-the-conversion-of-effector-nk-cells-into-type-1-innate-lymphoid-cells
#9
Yulong Gao, Fernando Souza-Fonseca-Guimaraes, Tobias Bald, Susanna S Ng, Arabella Young, Shin Foong Ngiow, Jai Rautela, Jasmin Straube, Nic Waddell, Stephen J Blake, Juming Yan, Laurent Bartholin, Jason S Lee, Eric Vivier, Kazuyoshi Takeda, Meriem Messaoudene, Laurence Zitvogel, Michele W L Teng, Gabrielle T Belz, Christian R Engwerda, Nicholas D Huntington, Kyohei Nakamura, Michael Hölzel, Mark J Smyth
Avoiding destruction by immune cells is a hallmark of cancer, yet how tumors ultimately evade control by natural killer (NK) cells remains incompletely defined. Using global transcriptomic and flow-cytometry analyses and genetically engineered mouse models, we identified the cytokine-TGF-β-signaling-dependent conversion of NK cells (CD49a- CD49b+ Eomes+ ) into intermediate type 1 innate lymphoid cell (intILC1) (CD49a+ CD49b+ Eomes+ ) populations and ILC1 (CD49a+ CD49b- Eomesint ) populations in the tumor microenvironment...
September 2017: Nature Immunology
https://www.readbyqxmd.com/read/28751776/hobit-expression-by-a-subset-of-human-liver-resident-cd56-bright-natural-killer-cells
#10
Sebastian Lunemann, Gloria Martrus, Hanna Goebels, Tobias Kautz, Annika Langeneckert, Wilhelm Salzberger, Martina Koch, Madeleine J Bunders, Björn Nashan, Klaas P J M van Gisbergen, Marcus Altfeld
Immune responses show a high degree of tissue specificity shaped by factors influencing tissue egress and retention of immune cells. The transcription factor Hobit was recently shown to regulate tissue-residency in mice. Whether Hobit acts in a similar capacity in humans remains unknown. Our aim was to assess the expression and contribution of Hobit to tissue-residency of Natural Killer (NK) cells in the human liver. The human liver was enriched for CD56(bright) NK cells showing increased expression levels of the transcription factor Hobit...
July 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28514662/a-murine-intestinal-intraepithelial-nkp46-negative-innate-lymphoid-cell-population-characterized-by-group-1-properties
#11
Aline Van Acker, Konrad Gronke, Aindrila Biswas, Liesbet Martens, Yvan Saeys, Jessica Filtjens, Sylvie Taveirne, Els Van Ammel, Tessa Kerre, Patrick Matthys, Tom Taghon, Bart Vandekerckhove, Jean Plum, Ildiko Rita Dunay, Andreas Diefenbach, Georges Leclercq
The Ly49E receptor is preferentially expressed on murine innate-like lymphocytes, such as epidermal Vγ3 T cells, intestinal intraepithelial CD8αα+ T lymphocytes, and CD49a+ liver natural killer (NK) cells. As the latter have recently been shown to be distinct from conventional NK cells and have innate lymphoid cell type 1 (ILC1) properties, we investigated Ly49E expression on intestinal ILC populations. Here, we show that Ly49E expression is very low on known ILC populations, but it can be used to define a previously unrecognized intraepithelial innate lymphoid population...
May 16, 2017: Cell Reports
https://www.readbyqxmd.com/read/28214226/cd49a-expression-defines-tissue-resident-cd8-t-cells-poised-for-cytotoxic-function-in-human-skin
#12
Stanley Cheuk, Heinrich Schlums, Irène Gallais Sérézal, Elisa Martini, Samuel C Chiang, Nicole Marquardt, Anna Gibbs, Ebba Detlofsson, Andrea Introini, Marianne Forkel, Charlotte Höög, Annelie Tjernlund, Jakob Michaëlsson, Lasse Folkersen, Jenny Mjösberg, Lennart Blomqvist, Marcus Ehrström, Mona Ståhle, Yenan T Bryceson, Liv Eidsmo
Tissue-resident memory T (Trm) cells form a heterogeneous population that provides localized protection against pathogens. Here, we identify CD49a as a marker that differentiates CD8+ Trm cells on a compartmental and functional basis. In human skin epithelia, CD8+ CD49a+ Trm cells produced interferon-γ, whereas CD8+ CD49a- Trm cells produced interleukin-17 (IL-17). In addition, CD8+ CD49a+ Trm cells from healthy skin rapidly induced the expression of the effector molecules perforin and granzyme B when stimulated with IL-15, thereby promoting a strong cytotoxic response...
February 21, 2017: Immunity
https://www.readbyqxmd.com/read/28031334/respiratory-influenza-virus-infection-induces-memory-like-liver-nk-cells-in-mice
#13
Tingting Li, Jian Wang, Yanshi Wang, Yongyan Chen, Haiming Wei, Rui Sun, Zhigang Tian
Although NK cells are classified as innate immune cells, recent studies have demonstrated the transformation of NK cells into long-lived memory cells that contribute to secondary immune responses in certain mouse models. However, whether NK cells mount an Ag-specific memory response to acute influenza virus infection has not yet been examined. Here, we show that, consistent with previous studies, lung NK cells play an important role in controlling viral proliferation after primary influenza virus infection...
February 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27842980/establishment-characterization-and-long-term-culture-of-human-endocrine-pancreas-derived-microvascular-endothelial-cells
#14
Valeria Sordi, Anna Ferri, Valentina Ceserani, Emilio Ciusani, Erica Dugnani, Silvia Pellegrini, Rita Nano, Lorenza Pecciarini, Augusto Pessina, Luisa Pascucci, Lorenzo Piemonti, Giulio Alessandri
BACKGROUND: In vitro primary cultures of microvascular endothelial cells from endocrine pancreas are difficult to obtain, but can be a very helpful tool for studies of islet biology, transplantation and regenerative medicine. METHODS: We applied a protocol recently described for the isolation and culture of brain microvascular endothelial cells (EC) on human pancreatic islets. EC obtained were characterized in terms of morphological (light and transmission electron microscopy), phenotypical (by immunofluorescence and flow cytometry) and functional (cord formation assay and protein secretion by multiplex bead-based assay) characteristics...
January 2017: Cytotherapy
https://www.readbyqxmd.com/read/27821019/molecular-signatures-of-primary-human-spermatogonial-progenitors-and-its-neighboring-peritubular-stromal-compartment
#15
Abhishek Harichandan, Kavitha Sivasubramaniyan, Jörg Hennenlotter, Sven Poths, Jens Bedke, Stephan Kruck, Arnulf Stenzl, Hans-Jörg Bühring
In-depth understanding of human spermatogenesis requires studying specific molecular signatures and interactions of spermatogonia with other testicular cell populations, for which isolation of pure populations of different cell types is crucial. Here, we describe a technique to simultaneously enrich pure, multiple testicular cell populations, including spermatogonia, endothelial (TECs), and perivascular mesenchymal stem/stromal cells (TMSCs), from testicular tissue by flow cytometry using a combination of defined markers...
February 15, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/27670593/the-aryl-hydrocarbon-receptor-is-required-for-the-maintenance-of-liver-resident-natural-killer-cells
#16
Luhua H Zhang, June Ho Shin, Mikel D Haggadone, John B Sunwoo
A tissue-resident population of natural killer cells (NK cells) in the liver has recently been described to have the unique capacity to confer immunological memory in the form of hapten-specific contact hypersensitivity independent of T and B cells. Factors regulating the development and maintenance of these liver-resident NK cells are poorly understood. The aryl hydrocarbon receptor (AhR) is a transcription factor modulated by exogenous and endogenous ligands that is important in the homeostasis of immune cells at barrier sites, such as the skin and gut...
October 17, 2016: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27622018/intra-cheek-immunization-as-a-novel-vaccination-route-for-therapeutic-vaccines-of-head-and-neck-squamous-cell-carcinomas-using-plasmo-virus-like-particles
#17
Rodney Macedo, Juliette Rochefort, Maude Guillot-Delost, Kae Tanaka, Aline Le Moignic, Clara Noizat, Claude Baillou, Véronique Mateo, Antoine F Carpentier, Eric Tartour, Chloé Bertolus, Bertrand Bellier, Géraldine Lescaille, François M Lemoine
Despite current therapy, head and neck squamous cell carcinomas (HNSCCs) arising from various mucosal sites of the upper aero-digestive tract frequently relapse in a loco-regional manner and have a poor prognosis. Our objective was to validate an innovative mucosal route of vaccination using plasmo virus-like particles (pVLPs) in a pre-clinical orthotopic model of HNSCCs. For this purpose, we used pVLP-E7, that are plasmid DNA encoding retroviral virus-like particles carrying a truncated E7 oncoprotein from HPV-16 as antigen model, to vaccinate mice bearing pre-established TC-1 tumors implanted into the buccal mucosa...
July 2016: Oncoimmunology
https://www.readbyqxmd.com/read/27578034/effects-of-vla-1-blockade-on-experimental-inflammation-in-mice
#18
Ryuichi Totsuka, Takaaki Kondo, Shigeki Matsubara, Midori Hirai, Yoichi Kurebayashi
VLA-1 (very late antigen-1) is implicated in recruitment, retention and activation of leukocytes and its blockade has been referred as a potential target of new drug discovery to address unmet medical needs in inflammatory disease area. In the present study, we investigate the effects of an anti-murine CD49a (integrin α subunit of VLA-1) monoclonal antibody (Ha31/8) on various experimental models of inflammatory diseases in mice. Pretreatment with Ha31/8 at an intraperitoneal dose of 250 µg significantly (P<0...
July 5, 2016: Kobe Journal of Medical Sciences
https://www.readbyqxmd.com/read/27493244/murine-liver-resident-group-1-innate-lymphoid-cells-regulate-optimal-priming-of-anti-viral-cd8-t-cells
#19
Peter D Krueger, Sowmya Narayanan, Fionna A Surette, Michael G Brown, Sun-Sang J Sung, Young S Hahn
The liver contains 2 transcriptionally distinct group 1 ILC subsets: CD49a+ ILC1s and CD49b+ NK cells. However, little is known about how group 1 ILCs contribute to hepatic immune responses. Therefore, we characterized murine liver-resident group 1 ILCs and found that CD49a+ ILC1s express high levels of the inhibitory receptor NKG2A and localize near DCs in perivascular spaces surrounding the portal triads. Upon hepatic viral infection, NKG2A signaling in group 1 ILCs, especially in CD49a+ ILC1s, inhibits CXCL9 expression required for robust accumulation of IFN-γ+ CD49b+ NK cells...
January 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/27446091/human-circulating-and-tissue-resident-cd56-bright-natural-killer-cell-populations
#20
REVIEW
Janine E Melsen, Gertjan Lugthart, Arjan C Lankester, Marco W Schilham
Two human natural killer (NK) cell subsets are usually distinguished, displaying the CD56(dim)CD16(+) and the CD56(bright)CD16(-/+) phenotype. This distinction is based on NK cells present in blood, where the CD56(dim) NK cells predominate. However, CD56(bright) NK cells outnumber CD56(dim) NK cells in the human body due to the fact that they are predominant in peripheral and lymphoid tissues. Interestingly, within the total CD56(bright) NK cell compartment, a major phenotypical and functional diversity is observed, as demonstrated by the discovery of tissue-resident CD56(bright) NK cells in the uterus, liver, and lymphoid tissues...
2016: Frontiers in Immunology
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