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https://www.readbyqxmd.com/read/28228336/evaluation-of-hydrophobic-chitosan-based-particulate-formulations-of-porcine-reproductive-and-respiratory-syndrome-virus-vaccine-candidate-t-cell-antigens
#1
Helen Mokhtar, Lucia Biffar, Satyanarayana Somavarapu, Jean-Pierre Frossard, Sarah McGowan, Miriam Pedrera, Rebecca Strong, Jane C Edwards, Margarita Garcia-Durán, Maria Jose Rodriguez, Graham R Stewart, Falko Steinbach, Simon P Graham
PRRS control is hampered by the inadequacies of existing vaccines to combat the extreme diversity of circulating viruses. Since immune clearance of PRRSV infection may not be dependent on the development of neutralising antibodies and the identification of broadly-neutralising antibody epitopes have proven elusive, we hypothesised that conserved T cell antigens represent potential candidates for development of a novel PRRS vaccine. Previously we had identified the M and NSP5 proteins as well-conserved targets of polyfunctional CD8 and CD4 T cells...
February 3, 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28225819/lipid-interactions-and-angle-of-approach-to-the-hiv-1-viral-membrane-of-broadly-neutralizing-antibody-10e8-insights-for-vaccine-and-therapeutic-design
#2
Adriana Irimia, Andreia M Serra, Anita Sarkar, Ronald Jacak, Oleksandr Kalyuzhniy, Devin Sok, Karen L Saye-Francisco, Torben Schiffner, Ryan Tingle, Michael Kubitz, Yumiko Adachi, Robyn L Stanfield, Marc C Deller, Dennis R Burton, William R Schief, Ian A Wilson
Among broadly neutralizing antibodies to HIV, 10E8 exhibits greater neutralizing breadth than most. Consequently, this antibody is the focus of prophylactic/therapeutic development. The 10E8 epitope has been identified as the conserved membrane proximal external region (MPER) of gp41 subunit of the envelope (Env) viral glycoprotein and is a major vaccine target. However, the MPER is proximal to the viral membrane and may be laterally inserted into the membrane in the Env prefusion form. Nevertheless, 10E8 has not been reported to have significant lipid-binding reactivity...
February 22, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28225519/a-cytokine-pattern-that-differentiates-preseroconversion-from-postseroconversion-phases-of-primary-hiv-infection
#3
Lucia Pastor, Erica Parker, Jorge Carrillo, Victor Urrea, Laura Fuente-Soro, Durval Respeito, Chenjerai Jairoce, Inacio Mandomando, Julià Blanco, Denise Naniche
BACKGROUND: During acute HIV infection, HIV actively replicates but seroconversion has not yet occurred. Primary HIV infection (PHI) is characterized by a transient nonspecific febrile illness, a massive inflammatory response, and the progressive appearance of anti-HIV-specific antibodies. In this study, we have identified patterns of inflammatory biomarkers associated with the innate immunological reaction before completion of a full humoral response. METHODS: A symptom-based screening was used to identify acute HIV infection in the Manhiça District Hospital in Mozambique...
April 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28225386/acute-myocardial-infarction-and-antiphospholipid-antibody-syndrome-a-systematic-review
#4
Salik Nazir, Niranjan Tachamo, Saroj Lohani, Rittu Hingorani, Dilli R Poudel, Anthony Donato
BACKGROUND: Antiphospholipid antibody syndrome (APS) is a disorder associated with both arterial and venous thromboembolic disease, including acute myocardial infarction (AMI). Given that management with anticoagulants is critical and differs from usual AMI care, identification of key discriminators of patients with AMI with APS is important. METHODS: We performed an English-language systematic review of the literature of cases and case series of patients with AMI and APS from inception until 20 March 2016, collecting demographics, investigations, and outcomes...
February 20, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28224978/methylated-antibody-affinity-purification-to-improve-proteomic-identification-of-plant-rna-polymerase-pol-v-complex-and-the-interacting-proteins
#5
Guochen Qin, Jun Ma, Xiaomei Chen, Zhaoqing Chu, Yi-Min She
Affinity purification followed by enzymatic digestion and mass spectrometry has been widely utilized for the sensitive detection of interacting proteins and protein complexes in various organisms. In plants, the method is technically challenging due to the low abundance proteins, non-specific binding and difficulties of eluting interacting proteins from antibody beads. In this report, we describe a strategy to modify antibodies by reductive methylation of lysines without affecting their binding properties, followed by on-bead digestion of bound proteins with endoproteinase Lys-C...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28224137/hmgb1-anti-hmgb1-antibodies-define-a-molecular-signature-of-early-stages-of-hiv-associated-neurocognitive-isorders-hand
#6
Marie-Lise Gougeon, Béatrice Poirier-Beaudouin, Jacques Durant, Christine Lebrun-Frenay, Héla Saïdi, Valérie Seffer, Michel Ticchioni, Stephane Chanalet, Helene Carsenti, Alexandra Harvey-Langton, Muriel Laffon, Jacqueline Cottalorda, Christian Pradier, Pierre Dellamonica, Matteo Vassallo
BACKGROUND: HIV-associated neurocognitive disorders (HAND) persist in the post-HAART era, characterized by asymptomatic neurocognitive impairment (ANI) and mild neurocognitive disorders (MND). High mobility group box 1 (HMGB1) is a non-histone chromosomal protein widely expressed in the nucleus of all eukaryotic cells, including brain cells, which acts as a potent proinflammatory cytokine when actively secreted from immune cells. Recent reports suggested that HMGB1 acts on microglial cells to promote neuroinflammation...
February 2017: Heliyon
https://www.readbyqxmd.com/read/28223726/dendritic-cells-engineered-to-secrete-anti-dcr3-antibody-augment-cytotoxic-t-lymphocyte-response-against-pancreatic-cancer-in-vitro
#7
Jiang Chen, Xiao-Zhong Guo, Hong-Yu Li, Jia-Jun Zhao, Wen-Da Xu
AIM: To investigate the enhanced cytotoxic T lymphocyte responses against pancreatic cancer (PC) in vitro induced by dendritic cells (DCs) engineered to secrete anti-DcR3 monoclonal antibody (mAb). METHODS: DCs, T lymphocytes and primary PC cells were obtained from PC patients. DCs were transfected with a designed humanized anti-DcR3 monoclonal antibody heavy and light chain mRNA and/or total tumor RNA (DC-tumor-anti-DcR3 RNA or DC-total tumor RNA) by using electroporation technology...
February 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28223349/identification-of-antibody-targets-for-tuberculosis-serology-using-high-density-nucleic-acid-programmable-protein-arrays
#8
Lusheng Song, Garrick Wallstrom, Xiaobo Yu, Marika Hopper, Jennifer Van Duine, Jason Steel, Jin Park, Peter Wiktor, Peter Khan, Al Brunner, Douglas Wilson, Elizabeth R Jenny-Avital, Ji Qiu, Joshua LaBaer, D Mitchell Magee, Jacqueline M Achkar
Better and more diverse biomarkers for the development of simple point-of-care tests for active tuberculosis (TB), a clinically heterogeneous disease, are urgently needed. We generated a proteomic Mycobacterium tuberculosis (Mtb) High-Density Nucleic Acid Programmable Protein Array (HD-NAPPA) that used a novel multiplexed strategy for expedited high-throughput screening for antibody responses to the Mtb proteome. We screened sera from HIV uninfected and co-infected TB patients and controls (n = 120) from the US and South Africa (SA) using the multiplex HD-NAPPA for discovery, followed by deconvolution and validation through single protein HD-NAPPA with biologically independent samples (n=124)...
February 21, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28223233/unravelling-the-pharmacologic-opportunities-and-future-directions-for-targeted-therapies-in-gastro-intestinal-cancers-part-1-gi-carcinomas
#9
REVIEW
Cindy Neuzillet, Benoît Rousseau, Hemant Kocher, Philippe Bourget, Christophe Tournigand
Until the 1990s, cytotoxic chemotherapy has been the cornerstone of medical therapy for gastrointestinal (GI) cancers. Better understanding of the molecular biology of cancer cell has led to the therapeutic revolution of targeted therapies, i.e. monoclonal antibodies or small molecule inhibitors directed against proteins that are specifically overexpressed or mutated in cancer cells. These agents being more specific to cancer cells were expected to be less toxic than cytotoxic agents. Targeted agents have provided clinical benefit in many GI cancer types...
February 13, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28222748/identification-of-host-cellular-proteins-that-interact-with-the-m-protein-of-a-highly-pathogenic-porcine-reproductive-and-respiratory-syndrome-virus-vaccine-strain
#10
Qian Wang, Yanwei Li, Hong Dong, Li Wang, Jinmei Peng, Tongqing An, Xufu Yang, Zhijun Tian, Xuehui Cai
BACKGROUND: The highly pathogenic porcine reproductive and respiratory syndrome virus (HP-PRRSV) continues to pose one of the greatest threats to the swine industry. M protein is the most conserved and important structural protein of PRRSV. However, information about the host cellular proteins that interact with M protein remains limited. METHODS: Host cellular proteins that interact with the M protein of HP-PRRSV were immunoprecipitated from MARC-145 cells infected with PRRSV HuN4-F112 using the M monoclonal antibody (mAb)...
February 22, 2017: Virology Journal
https://www.readbyqxmd.com/read/28222447/impact-of-pd-l1-expression-in-patients-with-surgically-resected-non-small-cell-lung-cancer
#11
Satoshi Igawa, Yuichi Sato, Shinichiro Ryuge, Masaaki Ichinoe, Ken Katono, Yasuhiro Hiyoshi, Sakiko Otani, Ryo Nagashio, Hiroyasu Nakashima, Masato Katagiri, Jiichiro Sasaki, Yoshiki Murakumo, Yukitoshi Satoh, Noriyuki Masuda
BACKGROUND: Immunotherapy can become a crucial therapeutic option to improve the prognosis of patients with non-small-cell lung cancer (NSCLC). Here, we evaluated the impact of programmed cell death ligand-1 (PD-L1) expression in surgically resected NSCLCs. METHODS: We estimated PD-L1 expression in 229 consecutive NSCLC specimens using rabbit polyclonal antibodies to human PD-L1 in a SP263 immunohistochemical assay and evaluated PD-L1 expression for potential associations with clinicopathological parameters and survival time...
February 22, 2017: Oncology
https://www.readbyqxmd.com/read/28222140/in-situ-single-cell-detection-via-microfluidic-magnetic-bead-assay
#12
Fan Liu, Pawan Kc, Ge Zhang, Jiang Zhe
We present a single cell detection device based on magnetic bead assay and micro Coulter counters. This device consists of two successive micro Coulter counters, coupled with a high gradient magnetic field generated by an external magnet. The device can identify single cells in terms of the transit time difference of the cell through the two micro Coulter counters. Target cells are conjugated with magnetic beads via specific antibody and antigen binding. A target cell traveling through the two Coulter counters interacts with the magnetic field, and have a longer transit time at the 1st counter than that at the 2nd counter...
2017: PloS One
https://www.readbyqxmd.com/read/28221101/identification-of-a-novel-epitope-in-the-c-terminus-of-hcv-e2-protein-that-induces-potent-and-cross-reactive-neutralizing-antibodies
#13
Soma Das, Ranajoy Mullick, Anuj Kumar, Himani Tandon, Mihika Bose, K Gouthamchandra, Madhavi Chandra, Bagepally Ravishankar, M N Khaja, Narayanaswamy Srinivasan, Saumitra Das, Shaila Melkote Subbarao, Anjali Anoop Karande
Hepatitis C virus (HCV) is a leading cause of chronic viral hepatitis, but an effective vaccine is still not available to prevent infection. Use of neutralizing antibodies could be a potential therapeutic option. In this study, presence of anti-HCV antibodies in HCV-infected patients' was assessed from 50 patients and examined for the presence of neutralizing antibodies using the 'hepatitis C virus like particles'. Antibodies from two samples exhibited significant inhibitory activity suggesting that these may neutralize viral infection...
February 3, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28220811/aptamers-for-respiratory-syncytial-virus-detection
#14
Krisztina Percze, Zoltán Szakács, Éva Scholz, Judit András, Zsuzsanna Szeitner, Corné H van den Kieboom, Gerben Ferwerda, Marien I de Jonge, Róbert E Gyurcsányi, Tamás Mészáros
The identification of the infectious agents is pivotal for appropriate care of patients with viral diseases. Current viral diagnostics rely on selective detection of viral nucleic acid or protein components. In general, detection of proteins rather than nucleic acids is technically more suitable for rapid tests. However, protein-based virus identification methods depend on antibodies limiting the practical applicability of these approaches. Aptamers rival antibodies in target selectivity and binding affinity, and excel in terms of robustness and cost of synthesis...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28220766/immunological-biomarkers-and-long-term-graft-survival-prospective-follow-up-of-457-kidney-transplant-recipients
#15
Michał Ciszek, Krzysztof Mucha, Bartosz Foroncewicz, Dorota Żochowska, Maciej Kosieradzki, Tadeusz Grochowiecki, Magdalena Durlik, Andrzej Górski, Leszek Pączek
INTRODUCTION    Antibodies against donor`s human leukocyte antigens (HLA) play a significant role in the pathogenesis of antibody mediated rejection, although their role during the late post-transplant period is unknown. A non-HLA polymorphic antigenic system like major histocompatibility class I chain-related antigen A (MICA) might be another target for antibody responses involved in rejection. OBJECTIVES    We conducted a 7-year prospective study to determine the effect of positivity for anti-HLA and anti-MICA antibodies on kidney graft survival...
February 15, 2017: Polskie Archiwum Medycyny Wewnętrznej
https://www.readbyqxmd.com/read/28220422/mapk-assays-in-arabidopsis-mamp-prr-signal-transduction
#16
Hoo Sun Chung, Jen Sheen
Activation of MAPK (Mitogen-Activated Protein Kinase) cascades after MAMP (Microbe-Associated Molecular Pattern) perception through PRR (Pattern Recognition Receptor) is one of the first conserved responses when plants encounter microbial organisms. Phosphorylation of various cellular factors in the MAMP-PRR pathway by MAPK cascades is critical for broad-spectrum plant innate immunity. Measurement of MAPK activation and identification of MAPK phosphorylation targets in the MAMP-PRR signal transduction pathway are essential to understand how plants reprogram their cellular processes to cope with unfavorable microbial attack...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28220082/synaptic-and-neuronal-autoantibody-associated-psychiatric-syndromes-controversies-and-hypotheses
#17
Adam Al-Diwani, Thomas A Pollak, Alexander E Langford, Belinda R Lennox
Autoimmune encephalitis (AE) mediated by antibodies against synaptic and neuronal surface targets frequently presents with a psychiatric syndrome. In these patients, removal of autoantibodies treats the disease and outcomes are closely linked to early intervention. The discovery of these autoantibodies in isolated psychiatric syndromes has raised the possibility that these patients may derive similar benefits from immunotherapy, a potentially transformational approach to the treatment of mental illness. Although open-label case series suggest impressive therapeutic outcomes, the pathological relevance of these autoantibodies outside of canonical presentations is debated...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28217651/differential-immune-reactivity-pattern-of-sw48-and-sw1116-colorectal-cancer-cell-lines-with-colorectal-cancer-patients-sera
#18
Ghasem Ghalamfarsa, Seyyed Vahid Hosseini, Maryam Hamidinia, Abbas Ghaderi, Mahmoud Mahmoudi, Zahra Mojtahedi
BACKGROUND: Colorectal cancer (CRC) is one of the most commonly diagnosed cancers worldwide. It is also known as the second leading cause of deaths as the early stage detection is not yet available by current methods. So identification of biomarkers can also be functional in early diagnosis and prognosis. MATERIALS AND METHODS: We examined sera from 60 CRC patients of different stages as a source of auto-antibody as well as two human CRC cell lines with different invasive capacities (SW48 and SW1116) as the source of antigens...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28216262/efis-lecture-understanding-the-ctla-4-checkpoint-in-the-maintenance-of-immune-homeostasis
#19
REVIEW
Lucy S K Walker
The past 20 years have heralded fascinating developments in the field of CTLA-4 biology. The CTLA-4 protein is a critical negative regulator of T cell immunity and its absence provokes severe lymphoproliferative disease. In a surprising twist, the generation of mixed bone marrow chimeric mice revealed that CTLA-4 predominantly functions in a cell-extrinsic manner, suggesting that CTLA-4 expressed on one cell can modify the behaviour of another cell. This was followed by the demonstration that CTLA-4 is highly expressed in regulatory T cells and can contribute to their suppressive activity...
February 16, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28215564/expression-analysis-and-atr-ftir-characterization-of-the-secondary-structure-of-recombinant-human-tnf-%C3%AE-from-escherichia-coli-shuffle-%C3%A2-t7-express-and-bl21-de3-cells
#20
Hossein Safarpour, Sahar Barzegari Banadkoki, Zahra Keshavarzi, Mohammad Hossein Morowvat, Mahdieh Soleimanpour, Shokoufeh Pourmolaei, Farshad H Shirazi
TNF-α, a prototype member of the TNF family of ligands, has both pro-inflammatory and immune-regulatory functions, which make it as an appropriate therapeutic target for selective blockade in antibody therapy of many diseases like in rheumatoid arthritis. Using two models of SHuffle(®) T7 Express and BL21 (DE3) cells, we have expressed this protein and recognized it by SDS-PAGE analysis. FTIR biospectroscopy of the resulted purified proteins has been performed and mathematical calculations has been done for further identification of the structural and conformational differences between the two products...
February 16, 2017: International Journal of Biological Macromolecules
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