keyword
MENU ▼
Read by QxMD icon Read
search

MAIT cell

keyword
https://www.readbyqxmd.com/read/28089359/transient-and-long-time-kinetic-responses-of-the-cadaveric-leg-during-internal-and-external-foot-rotation
#1
Alexander R Mait, Adwait Mane, Jason L Forman, John Paul Donlon, Bingbing Nie, Richard W Kent
The purpose of this study was to determine the long-time and transient characteristics of the moment generated by external (ER) and internal (IR) rotation of the calcaneus with respect to the tibia. Two human cadaver legs were disarticulated at the knee joint while maintaining the connective tissue between the tibia and fibula. An axial rotation of 21° was applied to the proximal tibia to generate either ER or IR while the fibula was unconstrained and the calcaneus was permitted to translate in the transverse plane...
January 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28089353/cerebrospinal-fluid-mitochondrial-dna-in-the-alzheimer-s-disease-continuum
#2
Laura Cervera-Carles, Daniel Alcolea, Ainara Estanga, Mirian Ecay-Torres, Andrea Izagirre, Montserrat Clerigué, Maite García-Sebastián, Jorge Villanúa, Clàudia Escalas, Rafael Blesa, Pablo Martínez-Lage, Alberto Lleó, Juan Fortea, Jordi Clarimón
Low levels of cell-free mitochondrial DNA (mtDNA) in the cerebrospinal fluid (CSF) of Alzheimer's disease (AD) patients have been identified and proposed as a novel biomarker for the disease. The lack of validation studies of previous results prompted us to replicate this finding in a comprehensive series of patients and controls. We applied droplet digital polymerase chain reaction in CSF specimens from 124 patients representing the AD spectrum and 140 neurologically healthy controls. The following preanalytical and analytical parameters were evaluated: the effect of freeze-thaw cycles on mtDNA, the linearity of mtDNA load across serial dilutions, and the mtDNA levels in the diagnostic groups...
December 22, 2016: Neurobiology of Aging
https://www.readbyqxmd.com/read/28069799/ikbke-is-required-during-kras-induced-pancreatic-tumorigenesis
#3
Mihir Rajurkar, Kyvan Dang, Maite G Fernandez-Barrena, Xiangfan Liu, Martin E Fernandez-Zapico, Brian C Lewis, Junhao Mao
Pancreatic ductal adenocarcinoma (PDAC) is one of the deadliest malignancies lacking effective therapeutic strategies. Here, we show that the noncanonical IκB-related kinase, IKBKE, is a critical oncogenic effector during KRAS-induced pancreatic transformation. Loss of IKBKE inhibits the initiation and progression of pancreatic tumors in mice carrying pancreatic-specific KRAS activation. Mechanistically, we demonstrate that this protumoral effect of IKBKE involves the activation of GLI1 and AKT signaling and is independent of the levels of activity of the NF-κB pathway...
January 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28062719/characteristics-in-limbic-encephalitis-with-anti-adenylate-kinase-5-autoantibodies
#4
Le-Duy Do, Eve Chanson, Virginie Desestret, Bastien Joubert, François Ducray, Sabine Brugière, Yohann Couté, Maité Formaglio, Veronique Rogemond, Catherine Thomas-Antérion, Laura Borrega, Brice Laurens, Francois Tison, Jonathan Curot, Thomas De Brouker, Christine Lebrun-Frenay, Jean-Yves Delattre, Jean-Christophe Antoine, Jerome Honnorat
OBJECTIVE: To report 10 patients with limbic encephalitis (LE) and adenylate kinase 5 autoantibodies (AK5-Abs). METHODS: We conducted a retrospective study in a cohort of 50 patients with LE with uncharacterized autoantibodies and identified a specific target using immunohistochemistry, Western blotting, immunoprecipitation, mass spectrometry, and cell-based assay. RESULTS: AK5 (a known autoantigen of LE) was identified as the target of antibodies in the CSFs and sera of 10 patients with LE (median age 64 years; range 57-80), which was characterized by subacute anterograde amnesia without seizure and sometimes preceded by a prodromal phase of asthenia or mood disturbances...
January 6, 2017: Neurology
https://www.readbyqxmd.com/read/28049488/intracellular-trafficking-and-cellular-uptake-mechanism-of-phbv-nanoparticles-for-targeted-delivery-in-epithelial-cell-lines
#5
Juan P Peñaloza, Valeria Márquez-Miranda, Mauricio Cabaña-Brunod, Rodrigo Reyes-Ramírez, Felipe M Llancalahuen, Cristian Vilos, Fernanda Maldonado-Biermann, Luis A Velásquez, Juan A Fuentes, Fernando D González-Nilo, Maité Rodríguez-Díaz, Carolina Otero
BACKGROUND: Nanotechnology is a science that involves imaging, measurement, modeling and a manipulation of matter at the nanometric scale. One application of this technology is drug delivery systems based on nanoparticles obtained from natural or synthetic sources. An example of these systems is synthetized from poly(3-hydroxybutyrate-co-3-hydroxyvalerate), which is a biodegradable, biocompatible and a low production cost polymer. The aim of this work was to investigate the uptake mechanism of PHBV nanoparticles in two different epithelial cell lines (HeLa and SKOV-3)...
January 3, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/28032215/a-driver-role-for-gaba-metabolism-in-controlling-stem-and-proliferative-cell-state-through-ghb-production-in-glioma
#6
Elias A El-Habr, Luiz G Dubois, Fanny Burel-Vandenbos, Alexandra Bogeas, Joanna Lipecka, Laurent Turchi, François-Xavier Lejeune, Paulo Lucas Cerqueira Coehlo, Tomohiro Yamaki, Bryan M Wittmann, Mohamed Fareh, Emna Mahfoudhi, Maxime Janin, Ashwin Narayanan, Ghislaine Morvan-Dubois, Charlotte Schmitt, Maité Verreault, Lisa Oliver, Ariane Sharif, Johan Pallud, Bertrand Devaux, Stéphanie Puget, Penelope Korkolopoulou, Pascale Varlet, Chris Ottolenghi, Isabelle Plo, Vivaldo Moura-Neto, Thierry Virolle, Hervé Chneiweiss, Marie-Pierre Junier
Cell populations with differing proliferative, stem-like and tumorigenic states co-exist in most tumors and especially malignant gliomas. Whether metabolic variations can drive this heterogeneity by controlling dynamic changes in cell states is unknown. Metabolite profiling of human adult glioblastoma stem-like cells upon loss of their tumorigenicity revealed a switch in the catabolism of the GABA neurotransmitter toward enhanced production and secretion of its by-product GHB (4-hydroxybutyrate). This switch was driven by succinic semialdehyde dehydrogenase (SSADH) downregulation...
December 28, 2016: Acta Neuropathologica
https://www.readbyqxmd.com/read/28011187/mucosal-associated-invariant-t-cells-are-depleted-and-functionally-altered-in-patients-with-common-variable-immunodeficiency
#7
Serena Arduini, Jean Dunne, Niall Conlon, Conleth Feighery, Derek G Doherty
Common variable immunodeficiency (CVID) is a primary immunoglobulin deficiency characterized by recurrent infections and complications, including autoimmunity, enteropathy, polyclonal lymphocytic infiltration or lymphoid malignancy. Innate T cells can support B cell maturation and antibody production. We investigated the numbers, phenotypes and functions of circulating B cell, γδ T cell, invariant natural killer T (iNKT) cell and mucosal-associated invariant T (MAIT) cell subsets in 23 CVID patients and 27 healthy controls...
December 21, 2016: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28010156/bacillus-calmette-gu%C3%A3-rin-infection-and-cytotoxicity-in-the-retinal-pigment-epithelium
#8
Victor Llorenç, Marina Mesquida, Blanca Molins, Julian Gonzalez-Martín, Maite Sainz de la Maza, Alfredo Adán
PURPOSE: To investigate bacillus Calmette-Guérin (BCG) infective capability and cytotoxicity in ARPE-19 cells. METHODS: BCG inoculum was dispensed at a MOI 100:1 for 3 h in 90% confluent ARPE-19 cells. Infection rates at different time points were determined by colony forming units (CFU) count and, in parallel, by the number of microscopically infected cells. WST-1 reagent was used for cytotoxicity assays. RESULTS: A 67-year-old man previously treated with intravesical BCG for bladder carcinoma presented with chronic, refractory, bilateral uveitis with macular edema...
December 23, 2016: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/27983470/single-cell-studies-of-ifn-%C3%AE-promoter-activation-by-wildtype-and-ns1-defective-influenza-a-viruses
#9
Marian J Killip, David Jackson, Maite Pérez-Cidoncha, Ervin Fodor, Richard E Randall
Deletion or truncation of NS1, the principal interferon (IFN) antagonist of influenza viruses, leads to increased IFN induction during influenza virus infection. We have studied activation of the IFN induction cascade by both wildtype and NS1-defective viruses at the single-cell level using a cell line expressing GFP under the control of the IFN-β promoter and by examining MxA expression. The IFN-β promoter was not activated in all infected cells, even during NS1-defective virus infections. Loss of NS1 expression is therefore by itself insufficient to induce IFN in an infected cell, and factors besides NS1 expression status must dictate whether the IFN response is activated...
December 15, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27866852/ompa-a-flexible-clamp-for-bacterial-cell-wall-attachment
#10
Firdaus Samsudin, Maite L Ortiz-Suarez, Thomas J Piggot, Peter J Bond, Syma Khalid
The envelope of Gram-negative bacteria is highly complex, containing separate outer and inner membranes and an intervening periplasmic space encompassing a peptidoglycan (PGN) cell wall. The PGN scaffold is anchored non-covalently to the outer membrane via globular OmpA-like domains of various proteins. We report atomically detailed simulations of PGN bound to OmpA in three different states, including the isolated C-terminal domain (CTD), the full-length monomer, or the complete full-length dimeric form. Comparative analysis of dynamics of OmpA CTD from different bacteria helped to identify a conserved PGN-binding mode...
December 6, 2016: Structure
https://www.readbyqxmd.com/read/27852037/placental-immune-editing-switch-pies-learning-about-immunomodulatory-pathways-from-a-unique-case-report
#11
Miguel H Bronchud, Francesc Tresserra, Wenjie Xu, Sarah Warren, Maite Cusido, Bernat Zantop, Ana Claudia Zenclussen, Alessandra Cesano
The hypothesis of this work is that, in order to escape the natural immune surveillance mechanisms, cancer cells and the surrounding microenvironment might express ectopically genes that are physiologically present in the placenta to mediate fetal immune-tolerance. These natural "placental immune-editing switch" mechanisms (PIES) may represent the result of millions of years of mammalian evolution developed to allow materno-fetal tolerance. Here, we introduce genes of the immune regulatory pathways that are either similarly over- or under-expressed in tumor vs normal tissue...
November 11, 2016: Oncotarget
https://www.readbyqxmd.com/read/27849057/cell-senescence-is-an-antiviral-defense-mechanism
#12
Maite Baz-Martínez, Sabela Da Silva-Álvarez, Estefanía Rodríguez, Jorge Guerra, Ahmed El Motiam, Anxo Vidal, Tomás García-Caballero, Miguel González-Barcia, Laura Sánchez, César Muñoz-Fontela, Manuel Collado, Carmen Rivas
Cellular senescence is often considered a protection mechanism triggered by conditions that impose cellular stress. Continuous proliferation, DNA damaging agents or activated oncogenes are well-known activators of cell senescence. Apart from a characteristic stable cell cycle arrest, this response also involves a proinflammatory phenotype known as senescence-associated secretory phenotype (SASP). This, together with the widely known interference with senescence pathways by some oncoviruses, had led to the hypothesis that senescence may also be part of the host cell response to fight virus...
November 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27821737/quasimodo-mediates-daily-and-acute-light-effects-on-drosophila-clock-neuron-excitability
#13
Edgar Buhl, Adam Bradlaugh, Maite Ogueta, Ko-Fan Chen, Ralf Stanewsky, James J L Hodge
We have characterized a light-input pathway regulating Drosophila clock neuron excitability. The molecular clock drives rhythmic electrical excitability of clock neurons, and we show that the recently discovered light-input factor Quasimodo (Qsm) regulates this variation, presumably via an Na(+), K(+), Cl(-) cotransporter (NKCC) and the Shaw K(+) channel (dKV3.1). Because of light-dependent degradation of the clock protein Timeless (Tim), constant illumination (LL) leads to a breakdown of molecular and behavioral rhythms...
November 22, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27799620/mait-cells-promote-inflammatory-monocyte-differentiation-into-dendritic-cells-during-pulmonary-intracellular-infection
#14
Anda I Meierovics, Siobhán C Cowley
Mucosa-associated invariant T (MAIT) cells are a unique innate T cell subset that is necessary for rapid recruitment of activated CD4(+) T cells to the lungs after pulmonary F. tularensis LVS infection. Here, we investigated the mechanisms behind this effect. We provide evidence to show that MAIT cells promote early differentiation of CCR2-dependent monocytes into monocyte-derived DCs (Mo-DCs) in the lungs after F. tularensis LVS pulmonary infection. Adoptive transfer of Mo-DCs to MAIT cell-deficient mice (MR1(-/-) mice) rescued their defect in the recruitment of activated CD4(+) T cells to the lungs...
November 14, 2016: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27796716/association-of-breast-cancer-risk-in-brca1-and-brca2-mutation-carriers-with-genetic-variants-showing-differential-allelic-expression-identification-of-a-modifier-of-breast-cancer-risk-at-locus-11q22-3
#15
Yosr Hamdi, Penny Soucy, Karoline B Kuchenbaeker, Tomi Pastinen, Arnaud Droit, Audrey Lemaçon, Julian Adlard, Kristiina Aittomäki, Irene L Andrulis, Adalgeir Arason, Norbert Arnold, Banu K Arun, Jacopo Azzollini, Anita Bane, Laure Barjhoux, Daniel Barrowdale, Javier Benitez, Pascaline Berthet, Marinus J Blok, Kristie Bobolis, Valérie Bonadona, Bernardo Bonanni, Angela R Bradbury, Carole Brewer, Bruno Buecher, Saundra S Buys, Maria A Caligo, Jocelyne Chiquette, Wendy K Chung, Kathleen B M Claes, Mary B Daly, Francesca Damiola, Rosemarie Davidson, Miguel De la Hoya, Kim De Leeneer, Orland Diez, Yuan Chun Ding, Riccardo Dolcetti, Susan M Domchek, Cecilia M Dorfling, Diana Eccles, Ros Eeles, Zakaria Einbeigi, Bent Ejlertsen, Christoph Engel, D Gareth Evans, Lidia Feliubadalo, Lenka Foretova, Florentia Fostira, William D Foulkes, George Fountzilas, Eitan Friedman, Debra Frost, Pamela Ganschow, Patricia A Ganz, Judy Garber, Simon A Gayther, Anne-Marie Gerdes, Gord Glendon, Andrew K Godwin, David E Goldgar, Mark H Greene, Jacek Gronwald, Eric Hahnen, Ute Hamann, Thomas V O Hansen, Steven Hart, John L Hays, Frans B L Hogervorst, Peter J Hulick, Evgeny N Imyanitov, Claudine Isaacs, Louise Izatt, Anna Jakubowska, Paul James, Ramunas Janavicius, Uffe Birk Jensen, Esther M John, Vijai Joseph, Walter Just, Katarzyna Kaczmarek, Beth Y Karlan, Carolien M Kets, Judy Kirk, Mieke Kriege, Yael Laitman, Maïté Laurent, Conxi Lazaro, Goska Leslie, Jenny Lester, Fabienne Lesueur, Annelie Liljegren, Niklas Loman, Jennifer T Loud, Siranoush Manoukian, Milena Mariani, Sylvie Mazoyer, Lesley McGuffog, Hanne E J Meijers-Heijboer, Alfons Meindl, Austin Miller, Marco Montagna, Anna Marie Mulligan, Katherine L Nathanson, Susan L Neuhausen, Heli Nevanlinna, Robert L Nussbaum, Edith Olah, Olufunmilayo I Olopade, Kai-Ren Ong, Jan C Oosterwijk, Ana Osorio, Laura Papi, Sue Kyung Park, Inge Sokilde Pedersen, Bernard Peissel, Pedro Perez Segura, Paolo Peterlongo, Catherine M Phelan, Paolo Radice, Johanna Rantala, Christine Rappaport-Fuerhauser, Gad Rennert, Andrea Richardson, Mark Robson, Gustavo C Rodriguez, Matti A Rookus, Rita Katharina Schmutzler, Nicolas Sevenet, Payal D Shah, Christian F Singer, Thomas P Slavin, Katie Snape, Johanna Sokolowska, Ida Marie Heeholm Sønderstrup, Melissa Southey, Amanda B Spurdle, Zsofia Stadler, Dominique Stoppa-Lyonnet, Grzegorz Sukiennicki, Christian Sutter, Yen Tan, Muy-Kheng Tea, Manuel R Teixeira, Alex Teulé, Soo-Hwang Teo, Mary Beth Terry, Mads Thomassen, Laima Tihomirova, Marc Tischkowitz, Silvia Tognazzo, Amanda Ewart Toland, Nadine Tung, Ans M W van den Ouweland, Rob B van der Luijt, Klaartje van Engelen, Elizabeth J van Rensburg, Raymonda Varon-Mateeva, Barbara Wappenschmidt, Juul T Wijnen, Timothy Rebbeck, Georgia Chenevix-Trench, Kenneth Offit, Fergus J Couch, Silje Nord, Douglas F Easton, Antonis C Antoniou, Jacques Simard
PURPOSE: Cis-acting regulatory SNPs resulting in differential allelic expression (DAE) may, in part, explain the underlying phenotypic variation associated with many complex diseases. To investigate whether common variants associated with DAE were involved in breast cancer susceptibility among BRCA1 and BRCA2 mutation carriers, a list of 175 genes was developed based of their involvement in cancer-related pathways. METHODS: Using data from a genome-wide map of SNPs associated with allelic expression, we assessed the association of ~320 SNPs located in the vicinity of these genes with breast and ovarian cancer risks in 15,252 BRCA1 and 8211 BRCA2 mutation carriers ascertained from 54 studies participating in the Consortium of Investigators of Modifiers of BRCA1/2...
January 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27787804/extensive-phenotypic-analysis-transcription-factor-profiling-and-effector-cytokine-production-of-human-mait-cells-by-flow-cytometry
#16
Joana Dias, Johan K Sandberg, Edwin Leeansyah
The mucosa-associated invariant T (MAIT) cells are a large and relatively recently described innate-like antimicrobial T cell subset in humans. The study of human MAIT cells is still in its infancy, and many aspects of MAIT cell immunobiology in health and disease remain unexplored. Here, we describe methodological approaches and protocols to investigate the expression of a broad spectrum of surface receptors on human MAIT cells, and to examine their unique transcription factor profile, as well as their antimicrobial effector function using multicolor flow cytometry-based techniques...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27760760/dr3-signaling-modulates-the-function-of-foxp3-regulatory-t-cells-and-the-severity-of-acute-graft-versus-host-disease
#17
Hidekazu Nishikii, Byung-Su Kim, Yasuhisa Yokoyama, Yan Chen, Jeanette Baker, Antonio Pierini, Maite Alvarez, Melissa Mavers, Kristina Maas-Bauer, Yuqiong Pan, Shigeru Chiba, Robert S Negrin
CD4(+)Foxp3(+) regulatory T cells (Treg) are a subpopulation of T cells, which regulate the immune system and enhance immune tolerance after transplantation. Donor-derived Treg prevent the development of lethal acute graft-versus-host disease (GVHD) in murine models of allogeneic hematopoietic stem cell transplantation. We recently demonstrated that a single treatment of the agonistic antibody to DR3 (death receptor 3, αDR3) to donor mice resulted in the expansion of donor-derived Treg and prevented acute GVHD, although the precise role of DR3 signaling in GVHD has not been elucidated...
December 15, 2016: Blood
https://www.readbyqxmd.com/read/27760356/full-length-ompa-structure-function-and-membrane-interactions-predicted-by-molecular-dynamics-simulations
#18
Maite L Ortiz-Suarez, Firdaus Samsudin, Thomas J Piggot, Peter J Bond, Syma Khalid
OmpA is a multidomain protein found in the outer membranes of most Gram-negative bacteria. Despite a wealth of reported structural and biophysical studies, the structure-function relationships of this protein remain unclear. For example, it is still debated whether it functions as a pore, and the precise molecular role it plays in attachment to the peptidoglycan of the periplasm is unknown. The absence of a consensus view is partly due to the lack of a complete structure of the full-length protein. To address this issue, we performed molecular-dynamics simulations of the full-length model of the OmpA dimer proposed by Robinson and co-workers...
October 18, 2016: Biophysical Journal
https://www.readbyqxmd.com/read/27760106/how-mait-cells-get-their-start
#19
Haiguang Wang, Kristin A Hogquist
No abstract text is available yet for this article.
October 19, 2016: Nature Immunology
https://www.readbyqxmd.com/read/27759023/mr1-restricted-mucosal-associated-invariant-t-mait-cells-respond-to-mycobacterial-vaccination-and-infection-in-nonhuman-primates
#20
J M Greene, P Dash, S Roy, C McMurtrey, W Awad, J S Reed, K B Hammond, S Abdulhaqq, H L Wu, B J Burwitz, B F Roth, D W Morrow, J C Ford, G Xu, J Y Bae, H Crank, A W Legasse, T H Dang, H Y Greenaway, M Kurniawan, M C Gold, M J Harriff, D A Lewinsohn, B S Park, M K Axthelm, J J Stanton, S G Hansen, L J Picker, V Venturi, W Hildebrand, P G Thomas, D M Lewinsohn, E J Adams, J B Sacha
Studies on mucosal-associated invariant T cells (MAITs) in nonhuman primates (NHP), a physiologically relevant model of human immunity, are handicapped due to a lack of macaque MAIT-specific reagents. Here we show that while MR1 ligand-contact residues are conserved between human and multiple NHP species, three T-cell receptor contact-residue mutations in NHP MR1 diminish binding of human MR1 tetramers to macaque MAITs. Construction of naturally loaded macaque MR1 tetramers facilitated identification and characterization of macaque MR1-binding ligands and MAITs, both of which mirrored their human counterparts...
October 19, 2016: Mucosal Immunology
keyword
keyword
18374
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"