keyword
MENU ▼
Read by QxMD icon Read
search

Human antigen r

keyword
https://www.readbyqxmd.com/read/29776751/development-of-an-opsonophagocytic-killing-assay-for-group-a-streptococcus
#1
Scott Jones, Nicole J Moreland, Marta Zancolli, Jeremy Raynes, Jacelyn M S Loh, Pierre R Smeesters, Shiranee Sriskandan, Jonathan R Carapetis, John D Fraser, David Goldblatt
Group A Streptococcus (GAS) or Streptococcus pyogenes is responsible for an estimated 500,000 deaths worldwide each year. Protection against GAS infection is thought to be mediated by phagocytosis, enhanced by bacteria-specific antibody. There are no licenced GAS vaccines, despite many promising candidates in preclinical and early stage clinical development, the most advanced of which are based on the GAS M-protein. Vaccine progress has been hindered, in part, by the lack of a standardised functional assay suitable for vaccine evaluation...
May 15, 2018: Vaccine
https://www.readbyqxmd.com/read/29770136/cd3%C3%AE%C2%B5-expression-defines-functionally-distinct-subsets-of-v%C3%AE-1-t-cells-in-patients-with-human-immunodeficiency-virus-infection
#2
Pádraic J Dunne, Christina O Maher, Michael Freeley, Katie Dunne, Andreea Petrasca, Judy Orikiiriza, Margaret R Dunne, Derval Reidy, Siobhan O'Dea, Aisling Loy, Jim Woo, Aideen Long, Thomas R Rogers, Fiona Mulcahy, Derek G Doherty
Human γδ T cells expressing the Vδ1 T cell receptor (TCR) recognize self and microbial antigens and stress-inducible molecules in a major histocompatibility complex-unrestricted manner and are an important source of innate interleukin (IL)-17. Vδ1 T cells are expanded in the circulation and intestines of patients with human immunodeficiency virus (HIV) infection. In this study, we show that patients with HIV have elevated frequencies, but not absolute numbers, of circulating Vδ1 T cells compared to control subjects...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29769244/a-cs1-nkg2d-bispecific-antibody-collectively-activates-cytolytic-immune-cells-against-multiple-myeloma
#3
Wing Keung Chan, Siwen Kang, Youssef Youssef, Erin N Glankler, Emma R Barrett, Alex M Carter, Elshafa H Ahmed, Aman Prasad, Luxi Chen, Jianying Zhang, Don M Benson, Michael A Caligiuri, Jianhua Yu
Multiple myeloma (MM) is an incurable hematological malignancy of plasma cells with an estimated 30,000 new cases diagnosed each year in the United States, signifying the need for new therapeutic approaches. We hypothesized that targeting MM using a bispecific antibody (biAb) to simultaneously engage both innate and adaptive cytolytic immune cells could present potent antitumor activity. We engineered a biAb by fusing an anti-CS1 single chain variable fragment (scFv) and an anti-NKG2D scFv (CS1-NKG2D biAb)...
May 16, 2018: Cancer Immunology Research
https://www.readbyqxmd.com/read/29768174/hiv-1-vaccines-based-on-antibody-identification-b-cell-ontogeny-and-epitope-structure
#4
REVIEW
Peter D Kwong, John R Mascola
HIV-1 vaccine development has been stymied by an inability to induce broadly reactive neutralizing antibodies to the envelope (Env) trimer, the sole viral antigen on the virion surface. Antibodies isolated from HIV-1-infected donors, however, have been shown to recognize all major exposed regions of the prefusion-closed Env trimer, and an emerging understanding of the immunological and structural characteristics of these antibodies and the epitopes they recognize is enabling new approaches to vaccine design...
May 15, 2018: Immunity
https://www.readbyqxmd.com/read/29765702/is-radiographic-progression-in-radiographic-axial-spondyloarthritis-related-to-matrix-metalloproteinase-degradation-of-extracellular-matrix
#5
Anne Sofie Siebuhr, Desirée van der Heijde, Anne-C Bay-Jensen, Morten Asser Karsdal, Robert Landewé, Astrid van Tubergen, Sofia Ramiro
Background: Radiographic axial spondyloarthritis (r-axSpA) is associated with extracellular matrix (ECM) remodelling of affected tissues. We investigated whether there was a relationship between biomarkers of ECM remodelling and 2-year radiographic progression in r-axSpA. Methods: Patients from the Outcome in Ankylosing Spondylitis International Study (OASIS) were included if they had serum, clinical and spinal radiographic assessments available at baseline and 2 years later...
2018: RMD Open
https://www.readbyqxmd.com/read/29760718/multiplexed-nanopore-sequencing-of-hla-b-locus-in-m%C3%A4-ori-and-pacific-island-samples
#6
Kim N T Ton, Simone L Cree, Sabine J Gronert-Sum, Tony R Merriman, Lisa K Stamp, Martin A Kennedy
The human leukocyte antigen (HLA) system encodes the human major histocompatibility complex (MHC). HLA-B is the most polymorphic gene in the MHC class I region and many HLA-B alleles have been associated with adverse drug reactions (ADRs) and disease susceptibility. The frequency of such HLA-B alleles varies by ethnicity, and therefore it is important to understand the prevalence of such alleles in different population groups. Research into HLA involvement in ADRs would be facilitated by improved methods for genotyping key HLA-B alleles...
2018: Frontiers in Genetics
https://www.readbyqxmd.com/read/29760142/-in-vitro-and-in-vivo-activity-of-peptidomimetic-compounds-that-target-the-periodontal-pathogen-porphyromonas-gingivalis
#7
Jinlian Tan, Pravin C Patil, Frederick A Luzzio, Donald R Demuth
The interaction of the periodontal pathogen Porphyromonas gingivalis with oral streptococci is important for initial colonization of the oral cavity by P. gingivalis and is mediated by a discrete motif of the streptococcal antigen I/II protein. A synthetic peptide encompassing this motif functions as a potent inhibitor of P. gingivalis adherence but the use of peptides as topically applied therapeutic agents in the oral cavity has limitations arising from the relatively high cost of peptide synthesis and their susceptibility to degradation by proteases expressed by oral organisms...
May 14, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29758224/humanised-recombinant-antibody-fragments-bind-human-pancreatic-islet-cells
#8
Abigail C Buenafe, Philip R Streeter
We describe here the humanisation of two mouse monoclonal antibodies that bind to surface markers on human pancreatic islet endocrine cells. Monoclonal antibodies produced by the HIC1-2B4 and HIC0-4F9 mouse hybridomas bind distinct surface molecules expressed on endocrine cells and have been validated for a number of experimental methods including immunohistochemistry and live cell sorting by flow cytometry. Variable region framework and first constant region domain sequences were replaced with that from compatible human antibody sequences, and the resulting recombinant antigen-binding fragments were cloned and expressed in mouse myeloma cells...
May 11, 2018: Journal of Immunological Methods
https://www.readbyqxmd.com/read/29757445/lessons-learned-from-merging-wet-lab-experiments-with-molecular-simulation-to-improve-mab-humanization
#9
L Schwaigerlehner, M Pechlaner, P Mayrhofer, C Oostenbrink, R Kunert
Humanized monoclonal antibodies (mAbs) are among the most promising modern therapeutics, but defined engineering strategies are still not available. Antibody humanization often leads to a loss of affinity, as it is the case for our model antibody Ab2/3H6 (PDB entry 3BQU). Identifying appropriate back-to-mouse mutations is needed to restore binding affinity, but highly challenging. In order to get more insight, we have applied molecular dynamics simulations and correlated them to antibody binding and expression in wet lab experiments...
May 11, 2018: Protein Engineering, Design & Selection: PEDS
https://www.readbyqxmd.com/read/29757218/detection-of-specific-zikv-igm-in-travelers-using-a-multiplexed-flavivirus-microsphere-immunoassay
#10
Carmel T Taylor, Ian M Mackay, Jamie L McMahon, Sarah L Wheatley, Peter R Moore, Mitchell J Finger, Glen R Hewitson, Frederick A Moore
Zika virus (ZIKV) has spread widely in the Pacific and recently throughout the Americas. Unless detected by RT-PCR, confirming an acute ZIKV infection can be challenging. We developed and validated a multiplexed flavivirus immunoglobulin M (IgM) microsphere immunoassay (flaviMIA) which can differentiate ZIKV-specific IgM from that due to other flavivirus infections in humans. The flaviMIA bound 12 inactivated flavivirus antigens, including those from ZIKV and yellow fever virus (YFV), to distinct anti-flavivirus antibody coupled beads...
May 12, 2018: Viruses
https://www.readbyqxmd.com/read/29755435/analysis-of-phylogenetic-variation-of-stenotrophomonas-maltophilia-reveals-human-specific-branches
#11
Joerg Steinmann, Uwe Mamat, Ebrahim M Abda, Lisa Kirchhoff, Wolfgang R Streit, Ulrich E Schaible, Stefan Niemann, Thomas A Kohl
Stenotrophomonas maltophilia is a non-fermenting Gram-negative bacterium that is ubiquitous in the environment. In humans, this opportunistic multi-drug-resistant pathogen is responsible for a plethora of healthcare-associated infections. Here, we utilized a whole genome sequencing (WGS)-based phylogenomic core single nucleotide polymorphism (SNP) approach to characterize S. maltophilia subgroups, their potential association with human infection, and to detect any possible transmission events. In total, 89 isolates (67 clinical and 22 environmental) from Germany were sequenced...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29752869/allogeneic-umbilical-cord-blood-infusion-for-adults-with-ischemic-stroke-clinical-outcomes-from-a-phase-1-safety-study
#12
Daniel T Laskowitz, Ellen R Bennett, Rebecca J Durham, John J Volpi, Jonathan R Wiese, Michael Frankel, Elizabeth Shpall, Jeffry M Wilson, Jesse Troy, Joanne Kurtzberg
Stroke is a major cause of death and long-term disability, affecting one in six people worldwide. The only currently available approved pharmacological treatment for ischemic stroke is tissue plasminogen activator; however, relatively few patients are eligible for this therapy. We hypothesized that intravenous (IV) infusion of banked unrelated allogeneic umbilical cord blood (UCB) would improve functional outcomes in patients with ischemic stroke. To investigate this, we conducted a phase 1 open-label trial to assess the safety and feasibility of a single IV infusion of non-human leukocyte antigen (HLA) matched, ABO matched, unrelated allogeneic UCB into adult stroke patients...
May 12, 2018: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29750988/contribution-of-the-residue-at-position-4-within-classical-nuclear-localization-signals-to-modulating-interaction-with-importins-and-nuclear-targeting
#13
Kate M Smith, Veronica Di Antonio, Luca Bellucci, David R Thomas, Fabiana Caporuscio, Francesco Ciccarese, Hanieh Ghassabian, Kylie M Wagstaff, Jade K Forwood, David A Jans, Giorgio Palù, Gualtiero Alvisi
Nuclear import involves the recognition by importin (IMP) superfamily members of nuclear localization signals (NLSs) within protein cargoes destined for the nucleus, the best understood being recognition of classical NLSs (cNLSs) by the IMPα/β1 heterodimer. Although the cNLS consensus [K-(K/R)-X-(K/R) for positions P2-P5] is generally accepted, recent studies indicated that the contribution made by different residues at the P4 position can vary. Here, we apply a combination of microscopy, molecular dynamics, crystallography, in vitro binding, and bioinformatics approaches to show that the nature of residues at P4 indeed modulates cNLS function in the context of a prototypical Simian Virus 40 large tumor antigen-derived cNLS (KKRK, P2-5)...
May 8, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29750676/human-leukocyte-antigen-matching-in-organ-transplantation-what-we-know-and-how-can-we-make-it-better-revisiting-the-past-improving-the-future
#14
Anat R Tambur
PURPOSE OF REVIEW: A renaissance for human leukocyte antigen (HLA) testing emerged with the understanding that donor-specific HLA antibodies play a significant role in long-term allograft survival. This renewed focus on donor/recipient histocompatibility led to a recent quest to decipher antibody responses or, as introduced into the transplantation lexicon, 'HLA-epitope matching'. RECENT FINDINGS: Whether matching is at the antigen or the epitope level, in-depth understanding of how histo-incompatibility leads to activation of an immune response is required...
May 9, 2018: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/29750059/serum-il-6-correlates-with-axial-mobility-index-bath-ankylosing-spondylitis-metrology-index-in-brazilian-patients-with-ankylosing-spondylitis
#15
Cristina F Rabelo, Talita Siara Almeida Baptista, Laura Esteves Petersen, Moisés Evandro Bauer, Mauro Waldemar Keiserman, Henrique Luiz Staub
Introduction: Ankylosing spondylitis (AS) is a chronic disease featuring axial changes, peripheral arthritis and systemic involvement. Proinflammatory cytokines are probably involved in AS pathogenesis. The relationship of circulating cytokines with instruments of AS evaluation is an open field of research. Objective: The aim of this study was to compare serum levels of cytokines in AS patients and healthy controls, and search for correlations of cytokines with indexes of disease activity and quality of life...
2018: Open Access Rheumatology: Research and Reviews
https://www.readbyqxmd.com/read/29746596/the-hyr1-protein-from-the-fungus-candida-albicans-is-a-cross-kingdom-immunotherapeutic-target-for-acinetobacter-bacterial-infection
#16
Priya Uppuluri, Lin Lin, Abdullah Alqarihi, Guanpingsheng Luo, Eman G Youssef, Sondus Alkhazraji, Nannette Y Yount, Belal A Ibrahim, Michael Anthony Bolaris, John E Edwards, Marc Swidergall, Scott G Filler, Michael R Yeaman, Ashraf S Ibrahim
Different pathogens share similar medical settings and rely on similar virulence strategies to cause infections. We have previously applied 3-D computational modeling and bioinformatics to discover novel antigens that target more than one human pathogen. Active and passive immunization with the recombinant N-terminus of Candida albicans Hyr1 (rHyr1p-N) protect mice against lethal candidemia. Here we determine that Hyr1p shares homology with cell surface proteins of the multidrug resistant Gram negative bacterium, Acinetobacter baumannii including hemagglutinin (FhaB) and outer membrane protein A (OmpA)...
May 10, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29746004/extracellular-vesicles-induce-protective-immunity-against-trichuris-muris
#17
R K Shears, A J Bancroft, G W Hughes, R K Grencis, D J Thornton
Gastrointestinal nematodes, such as Trichuris trichiura (human whipworm), are a major source of morbidity in humans and their livestock. There is a paucity of commercially available vaccines against these parasites, and vaccine development for T. trichiura has been impeded by a lack of known host protective antigens. Experimental vaccinations with T. muris (murine whipworm) soluble Excretory/Secretory (ES) material have demonstrated that it is possible to induce protective immunity in mice, however the potential for extracellular vesicles (EVs) as a source of antigenic material has remained relatively unexplored...
May 10, 2018: Parasite Immunology
https://www.readbyqxmd.com/read/29745870/isolation-antigenicity-and-immunogenicity-of-lleida-bat-lyssavirus
#18
Ashley C Banyard, David Selden, Guanghui Wu, Leigh Thorne, Daisy Jennings, Denise Marston, Stefan Finke, Conrad M Freuling, Thomas Müller, Juan E Echevarría, Anthony R Fooks
The lyssaviruses are an important group of viruses that cause a fatal encephalitis termed rabies. The prototypic lyssavirus, rabies virus, is predicted to cause more than 60 000 human fatalities annually. The burden of disease for the other lyssaviruses is undefined. The original reports for the recently described highly divergent Lleida bat lyssavirus were based on the detection of virus sequence alone. The successful isolation of live Lleida bat lyssavirus from the carcass of the original bat and in vitro characterization of this novel lyssavirus are described here...
May 10, 2018: Journal of General Virology
https://www.readbyqxmd.com/read/29743365/dengue-virus-induces-increased-activity-of-the-complement-alternative-pathway-in-infected-cells
#19
Sheila Cabezas, Gustavo Bracho, Amanda L Aloia, Penelope J Adamson, Claudine S Bonder, Justine R Smith, David L Gordon, Jillian M Carr
Severe dengue virus (DENV) infection is associated with overactivity of the complement alternative pathway (AP) in patient studies. Here, the molecular changes in components of the AP during DENV infection in vitro are investigated. mRNA for factor H (FH) a major negative regulator of the AP, is significantly increased in DENV-infected endothelial cells (EC) and macrophages but in contrast production of extracellular FH protein is not. This discord is not seen for the AP activator, factor B (FB), with DENV induction of both FB mRNA and protein, nor with Toll-like receptor 3 or 4 stimulation of EC and macrophages, which induces both FH and FB mRNA and protein...
May 9, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29741650/flap-endonuclease-overexpression-drives-genome-instability-and-dna-damage-hypersensitivity-in-a-pcna-dependent-manner
#20
Jordan R Becker, David Gallo, Wendy Leung, Taylor Croissant, Yee Mon Thu, Hai Dang Nguyen, Timothy K Starr, Grant W Brown, Anja-Katrin Bielinsky
Overexpression of the flap endonuclease FEN1 has been observed in a variety of cancer types and is a marker for poor prognosis. To better understand the cellular consequences of FEN1 overexpression we utilized a model of its Saccharomyces cerevisiae homolog, RAD27. In this system, we discovered that flap endonuclease overexpression impedes replication fork progression and leads to an accumulation of cells in mid-S phase. This was accompanied by increased phosphorylation of the checkpoint kinase Rad53 and histone H2A-S129...
May 7, 2018: Nucleic Acids Research
keyword
keyword
115635
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"