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https://www.readbyqxmd.com/read/28222530/generation-and-partial-characterization-of-rabbit-monoclonal-antibody-to-amyloid-%C3%AE-peptide-1-37-a%C3%AE-37
#1
Pankaj D Mehta, Jean-Francois Blain, Emily A Freeman, Bruce A Patrick, Marc Barshatzky, Lori A Hrdlicka, Sangita P Mehta, Janusz Frackowiak, Bozena Mazur-Kolecka, Jerzy Wegiel, Holger Patzke, David L Miller
Secreted soluble amyloid-β 1-37 (Aβ37) peptide is one of the prominent Aβ forms next to Aβ40, and is found in cerebrospinal fluid (CSF) and blood. Recent studies have shown the importance of quantitation of CSF Aβ37 levels in combination with Aβ38, Aβ40, and Aβ42 to support the diagnosis of patients with probable Alzheimer's disease (AD), and the value of antibody to Aβ37 to facilitate drug discovery studies. However, the availability of reliable and specific monoclonal antibody to Aβ37 is very limited...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222445/blocking-il-17a-alleviates-diabetic-retinopathy-in-rodents
#2
Ao-Wang Qiu, Qing-Huai Liu, Jun-Ling Wang
BACKGROUND/AIMS: Interleukin (IL)-17A, a proinflammatory cytokine, has been implicated in several autoimmune diseases. However, it is unclear whether IL-17A is involved in diabetic retinopathy (DR), one of the most serious complications of autoimmune diabetes. This study aimed to demonstrate that IL-17A exacerbates DR by affecting retinal Müller cell function. METHODS: High glucose (HG)-treated rat Müller cell line (rMC-1) was exposed to IL-17A, anti-IL-17A-neutralizing monoclonal antibody (mAb) or/and anti-IL-17 receptor (R)A-neutralizing mAb for 24 h...
February 21, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28221723/animal-component-free-agrobacterium-tumefaciens-cultivation-media-for-better-gmp-compliance-increases-biomass-yield-and-pharmaceutical-protein-expression-in-nicotiana-benthamiana
#3
Marcel Houdelet, Anna Galinski, Tanja Holland, Kathrin Wenzel, Stefan Schillberg, Johannes Felix Buyel
Transient expression systems allow the rapid production of recombinant proteins in plants. Such systems can be scaled up to several hundred kilograms of biomass, making them suitable for the production of pharmaceutical proteins required at short notice, such as emergency vaccines. However, large-scale transient expression requires the production of recombinant Agrobacterium tumefaciens strains with the capacity for efficient gene transfer to plant cells. The complex media often used for the cultivation of this species typically include animal-derived ingredients that can contain human pathogens, thus conflicting with the requirements of good manufacturing practice (GMP)...
February 21, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28221311/unusual-concurrence-of-htlv-i-infection-and-polyneuropathy-organomegaly-endocrinopathy-monoclonal-plasma-cell-disorder-and-skin-changes-syndrome
#4
Reza Boostani, Nahid Olfati
No abstract text is available yet for this article.
March 2017: Journal of Clinical Neuromuscular Disease
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
#5
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/28220932/a-phase-2-study-of-simtuzumab-in-patients-with-primary-post-polycythaemia-vera-or-post-essential-thrombocythaemia-myelofibrosis
#6
Srdan Verstovsek, Michael R Savona, Ruben A Mesa, Hua Dong, Julia D Maltzman, Shringi Sharma, Jeffrey Silverman, Stephen T Oh, Jason Gotlib
Simtuzumab, a monoclonal antibody inhibitor of extracellular matrix enzyme lysyl oxidase-like-2, showed preclinical promise and was well tolerated in clinical studies. A phase 2, open-label study of simtuzumab was conducted in patients with primary myelofibrosis (MF), post-polycythaemia vera MF and post-essential thrombocythaemia MF. Fifty-four patients were randomized to receive simtuzumab alone (200 or 700 mg [n = 12 each group]) or simtuzumab (200 or 700 mg) with ruxolitinib (n = 15 each group) for 24 weeks...
February 21, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28220479/a-phase-1-2-trial-of-ublituximab-a-novel-anti-cd20-monoclonal-antibody-in-patients-with-b-cell-non-hodgkin-lymphoma-or-chronic-lymphocytic-leukaemia-previously-exposed-to-rituximab
#7
Ahmed Sawas, Charles M Farber, Marshall T Schreeder, Mazen Y Khalil, Daruka Mahadevan, Changchun Deng, Jennifer E Amengual, Petros G Nikolinakos, Jill M Kolesar, John G Kuhn, Peter Sportelli, Hari P Miskin, Owen A O'Connor
This phase 1/2 study evaluated the safety, pharmacokinetic behavior and anti-tumour activity of ublituximab, a unique type I, chimeric, glycoengineered anti-CD20 monoclonal antibody, in rituximab-relapsed or -refractory patients with B-cell non-Hodgkin lymphoma (B-NHL) or chronic lymphocytic leukaemia (CLL). Induction therapy (doses of 450-1200 mg) consisted of 4 weekly infusions in cycle 1 for NHL and 3 weekly infusions in cycles 1 and 2 for CLL. Patients received ublituximab maintenance monthly during cycles 3-5, then once every 3 months for up to 2 years...
February 21, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28220412/characterization-of-plant-cell-wall-damage-associated-molecular-patterns-regulating-immune-responses
#8
Laura Bacete, Hugo Mélida, Sivakumar Pattathil, Michael G Hahn, Antonio Molina, Eva Miedes
The plant cell wall is one of the first defensive barriers that pathogens need to overcome to successfully colonize plant tissues. Plant cell wall is considered a dynamic structure that regulates both constitutive and inducible defense mechanisms. The wall is a potential source of a diverse set of Damage-Associated Molecular Patterns (DAMPs), which are signalling molecules that trigger immune responses. However, just a few active wall ligands, such as oligogalacturonic acids (OGs), have been characterized so far...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28220238/application-of-calcium-phosphate-flocculation-in-high-density-cell-culture-fluid-with-high-product-titer-of-monoclonal-antibody
#9
Guoqiang Chen, Zhiguo Su, Feng Li, Hui Fang Liu
The calcium phosphate [Ca3(PO4)2] precipitation was used for improving the clarification efficiency in harvest process of the monoclonal antibody (mAb) containing cell culture fluid (CCF) with high turbidity and product titer. The flocculation conditions (concentration, addition order of flocculants, pH, and operation time), and the effect of flocculants on the mAb physical chemical properties (such as distribution of charge variants and aggregates) and process-related impurities removal (such as DNA and CHOP) were evaluated in this study...
February 20, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28220235/successful-discontinuation-of-eculizumab-under-immunosuppressive-therapy-in-deap-hus
#10
Agnes Hackl, Rasmus Ehren, Michael Kirschfink, Peter F Zipfel, Bodo B Beck, Lutz T Weber, Sandra Habbig
BACKGROUND: Deficiency of complement factor H-related plasma proteins and complement factor H autoantibody-positive hemolytic uremic syndrome (DEAP-HUS), which is characterized by the deficiency of complement-factor H-related (CFHR) plasma proteins and the subsequent formation of autoantibodies against complement factor H (CFH), has been reported to have an adverse outcome in one third of patients. Therapy options include prompt removal of antibodies by plasma exchange and immunosuppressive therapy...
February 20, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28220124/in-vivo-efficacy-of-umbilical-cord-blood-stem-cell-derived-nk-cells-in-the-treatment-of-metastatic-colorectal-cancer
#11
John P Veluchamy, Silvia Lopez-Lastra, Jan Spanholtz, Fenna Bohme, Nina Kok, Daniëlle A M Heideman, Henk M W Verheul, James P Di Santo, Tanja D de Gruijl, Hans J van der Vliet
Therapeutic monoclonal antibodies against the epidermal growth factor receptor (EGFR) act by inhibiting EGFR downstream signaling and by eliciting a natural killer (NK) cell-mediated antitumor response. The IgG1 mAb cetuximab has been used for treatment of RAS(wt) metastatic colorectal cancer (mCRC) patients, showing limited efficacy. In the present study, we address the potential of adoptive NK cell therapy to overcome these limitations investigating two allogeneic NK cell products, i.e., allogeneic activated peripheral blood NK cells (A-PBNK) and umbilical cord blood stem cell-derived NK cells (UCB-NK)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28220020/randomized-phase-ii-study-of-ramucirumab-or-icrucumab-in-combination-with-capecitabine-in-patients-with-previously-treated-locally-advanced-or-metastatic-breast-cancer
#12
Linda T Vahdat, Rachel Layman, Denise A Yardley, William Gradishar, Mohamad A Salkeni, Anil Abraham Joy, Agustin A Garcia, Patrick Ward, James Khatcheressian, Joseph Sparano, Gladys Rodriguez, Shande Tang, Ling Gao, Rita P Dalal, John Kauh, Kathy Miller
BACKGROUND: Icrucumab (ICR) and ramucirumab (RAM) bind vascular endothelial growth factor (VEGF) receptors 1 and 2 (VEGFR-1 and -2), respectively. This open-label, randomized phase II study evaluated their efficacy and safety in combination with capecitabine (CAP) in patients with previously treated unresectable, locally advanced or metastatic breast cancer. METHODS: Patients were randomly assigned (1:1:1) to receive CAP (1,000 mg/m(2) orally twice daily, days 1-14) alone or in combination with RAM (10 mg/kg intravenously [IV], days 1 and 8) (RAM + CAP) or ICR (12 mg/kg IV, days 1 and 8) (ICR + CAP) every 21 days...
February 20, 2017: Oncologist
https://www.readbyqxmd.com/read/28219820/versatile-carboxyl-terminus-of-capsid-protein-of-porcine-circovirus-type-2-were-recognized-by-monoclonal-antibodies-with-pluripotency-of-binding
#13
Ling-Chu Hung, Ivan-Chen Cheng
We designed the peptide (C3) mimetic carboxyl-terminus (Cterminus) of capsid protein of porcine circovirus type 2b (PCV2b-1A/1B) inducing humoral immunity and generating hybridomas. The positive reactivity of the mAbs to PCV2 capsid protein was demonstrated by Western blot assay. Those mAbs also showed positive signals on PCV2b infected swine lymphocytes by indirect immunofluorescence staining. The mAb 1H3 bound to three minimal linear epitopes (P62, DPPLNP; P67, DPPLNPK; P73, LKDPPLKP), which was located at Cterminus of the capsid protein of PCV2b-1A/1B, PCV2b-1C, and PCV2a-2A respectively...
February 17, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28219763/utility-of-japanese-encephalitis-virus-subgenomic-replicon-based-single-round-infectious-particles-as-antigens-in-neutralization-tests-for-zika-virus-and-three-other-flaviviruses
#14
Atsushi Yamanaka, Meng Ling Moi, Tomohiko Takasaki, Ichiro Kurane, Mami Matsuda, Ryosuke Suzuki, Eiji Konishi
The introduction of a foreign virus into an area may cause an outbreak, as with the Zika virus (ZIKV) outbreak in the Americas. Preparedness for handling a viral outbreak involves the development of tests for the serodiagnosis of foreign virus infections. We previously established a gene-based technology to generate some flaviviral antigens useful for functional antibody assays. The technology utilizes a Japanese encephalitis virus subgenomic replicon to generate single-round infectious particles (SRIPs) that possess designed surface antigens...
February 17, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28219472/immunodiagnosis-of-paramphistomosis-using-monoclonal-antibody-based-sandwich-elisa-for-detection-of-paramphistomum-gracile-circulating-16-kda-antigen
#15
Panat Anuracpreeda, Kullanid Tepsupornkul, Runglawan Chawengkirttikul
In this study, we have produced a monoclonal antibody (MoAb) against 16 kDa antigen of Paramphistomum gracile (16 kDaAgPg), and developed an accurate sandwich enzyme-linked immunosorbent assay (sandwich ELISA) for the detection of circulating 16 kDaAg in the serum and fecal samples from cattle naturally infected with P. gracile. MoAb 1D10 was immobilized on a microtitre plate, and the antigen in the samples was captured and detected with biotinylated rabbit anti-16 kDaAgPg antibody. The lower detection limit of sandwich ELISA was 3·5 pg mL-1, and no cross-reaction with other parasite antigens was evaluated...
February 21, 2017: Parasitology
https://www.readbyqxmd.com/read/28219375/state-of-the-art-in-anti-cancer-mabs
#16
REVIEW
S M Chiavenna, J P Jaworski, A Vendrell
Following Milstein's discovery, the monoclonal antibodies (mAbs) became a basic tool for biomedical science. In cancer field, since the first mAb was approved by the FDA a great improvement took place making of them a therapeutic option for many cancer types in the current clinical practice. Today, mAbs are being developed to target different molecules with different mechanisms of action and its target potential is unlimited. However, this huge and fast growing new field needs to be organized to better understand the treatment options we have to confront different cancer diseases...
February 20, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28219109/the-use-of-braf-v600e-mutation-specific-immunohistochemistry-in-pediatric-langerhans-cell-histiocytosis
#17
Leomar Y Ballester, Miguel D Cantu, Karen P H Lim, Stephen F Sarabia, Lizmery Suarez Ferguson, C Renee Webb, Carl E Allen, Kenneth L McClain, Carrie A Mohila, Jyotinder N Punia, Angshumoy Roy, Dolores H López-Terrada, M John Hicks, Kevin E Fisher
BRAF p.V600E mutations are detected in greater than 50% of pediatric Langerhans cell histiocytosis (LCH) lesions. However, the use of mutation-specific BRAF V600E immunohistochemistry (IHC) as a surrogate for molecular testing in pediatric LCH is unknown. We tested the mutation-specific BRAF V600E monoclonal antibody (clone VE1) in formalin-fixed, paraffin-embedded LCH samples from 26 pediatric patients (14 males and 12 females, ages 7 mo-17 y) using allele-specific real-time polymerase chain reaction (PCR) with a limit of detection of 0...
February 20, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28219072/human-allergen-specific-igg-subclass-antibodies-measured-using-immunocap-technology
#18
Robert Movérare, Karin Blume, Peter Lind, René Crevel, Åsa Marknell DeWitt, Stella Cochrane
BACKGROUND: Knowledge of human IgG subclass antibody responses to various allergens has been hampered by a lack of reliable standardized assays. The aim here was to develop quantitative immunoassays for human IgG1, IgG2, and IgG3 antibodies using ImmunoCAP® technology and to evaluate their application. METHODS: Enzyme conjugates with isotype-specific monoclonal antibodies and calibrators composed of purified myeloma paraproteins were developed for each assay and used together with other standardized assay reagents for the Phadia® 100 instrument...
February 21, 2017: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/28219003/targeting-the-cxcl12-cxcr4-axis-in-acute-myeloid-leukemia-from-bench-to-bedside
#19
Byung-Sik Cho, Hee-Je Kim, Marina Konopleva
The interactions between the cancerous cells of acute myeloid leukemia (AML) and the bone marrow (BM) microenvironment have been postulated to be important for resistance to chemotherapy and disease relapse in AML. The chemokine receptor CXC chemokine receptor 4 (CXCR4) and its ligand, CXC motif ligand 12 (CXCL12), also known as stromal cell-derived factor 1α, are key mediators of this interaction. CXCL12 is produced by the BM microenvironment, binds and activates its cognate receptor CXCR4 on leukemic cells, facilitates leukemia cell trafficking and homing in the BM microenvironment, and keeps leukemic cells in close contact with the stromal cells and extracellular matrix that constitutively generate growth-promoting and anti-apoptotic signals...
February 21, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28218620/endothelial-antigen-assembly-leads-to-thrombotic-complications-in-heparin-induced-thrombocytopenia
#20
Vincent Hayes, Ian Johnston, Gowthami M Arepally, Steven E McKenzie, Douglas B Cines, Lubica Rauova, Mortimer Poncz
Heparin-induced thrombocytopenia (HIT) is a prothrombotic disorder initiated by antibodies against complexes between human platelet factor 4 (hPF4) and heparin. A better understanding of the events that initiate the prothrombotic state may improve approaches to antithrombotic management. Here, we visualized thrombus formation in an in vivo murine model and an endothelialized microfluidic system that simulate the pathogenesis of HIT. hPF4 released from platelets predominantly bound to peri-injury endothelium and formed HIT antigenic complexes that were dissociated by heparin...
February 20, 2017: Journal of Clinical Investigation
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