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rabbit monoclonal antibody

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https://www.readbyqxmd.com/read/29035625/chickens-with-humanized-immunoglobulin-genes-generate-antibodies-with-high-affinity-and-broad-epitope-coverage-to-conserved-targets
#1
Kathryn H Ching, Ellen J Collarini, Yasmina N Abdiche, Daniel Bedinger, Darlene Pedersen, Shelley Izquierdo, Rian Harriman, Lei Zhu, Robert J Etches, Marie-Cecile van de Lavoir, William D Harriman, Philip A Leighton
Transgenic animal platforms for the discovery of human monoclonal antibodies have been developed in mice, rats, rabbits and cows. The immune response to human proteins is limited in these animals by their tolerance to mammalian-conserved epitopes. To expand the range of epitopes that are accessible, we have chosen an animal host that is less phylogenetically related to humans. Specifically, we generated transgenic chickens expressing antibodies from immunoglobulin heavy and light chain loci containing human variable regions and chicken constant regions...
October 16, 2017: MAbs
https://www.readbyqxmd.com/read/28993122/characterization-of-novel-monoclonal-antibodies-against-the-mers-coronavirus-spike-protein-and-their-application-in-species-independent-antibody-detection-by-competitive-elisa
#2
Shuetsu Fukushi, Aiko Fukuma, Takeshi Kurosu, Shumpei Watanabe, Masayuki Shimojima, Kazuya Shirato, Naoko Iwata-Yoshikawa, Noriyo Nagata, Kazuo Ohnishi, Manabu Ato, Simenew Keskes Melaku, Hiroshi Sentsui, Masayuki Saijo
Since discovering the Middle East respiratory syndrome coronavirus (MERS-CoV) as a causative agent of severe respiratory illness in the Middle East in 2012, serological testing has been conducted to assess antibody responses in patients and to investigate the zoonotic reservoir of the virus. Although the virus neutralization test is the gold standard assay for MERS diagnosis and for investigating the zoonotic reservoir, it uses live virus and so must be performed in high containment laboratories. Competitive ELISA (cELISA), in which a labeled monoclonal antibody (MAb) competes with test serum antibodies for target epitopes, may be a suitable alternative because it detects antibodies in a species-independent manner...
October 6, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28978475/elicitation-of-neutralizing-antibodies-targeting-the-v2-apex-of-the-hiv-envelope-trimer-in-a-wild-type-animal-model
#3
James E Voss, Raiees Andrabi, Laura E McCoy, Natalia de Val, Roberta P Fuller, Terrence Messmer, Ching-Yao Su, Devin Sok, Salar N Khan, Fernando Garces, Laura K Pritchard, Richard T Wyatt, Andrew B Ward, Max Crispin, Ian A Wilson, Dennis R Burton
Recent efforts toward HIV vaccine development include the design of immunogens that can engage B cell receptors with the potential to affinity mature into broadly neutralizing antibodies (bnAbs). V2-apex bnAbs, which bind a protein-glycan region on HIV envelope glycoprotein (Env) trimer, are among the most broad and potent described. We show here that a rare "glycan hole" at the V2 apex is enriched in HIV isolates neutralized by inferred precursors of prototype V2-apex bnAbs. To investigate whether this feature could focus neutralizing responses onto the apex bnAb region, we immunized wild-type rabbits with soluble trimers adapted from these Envs...
October 3, 2017: Cell Reports
https://www.readbyqxmd.com/read/28958080/invasive-features-of-small-sized-lung-adenocarcinoma-adjoining-emphysematous-bullae
#4
Gouji Toyokawa, Mototsugu Shimokawa, Yuka Kozuma, Taichi Matsubara, Naoki Haratake, Shinkichi Takamori, Takaki Akamine, Kazuki Takada, Masakazu Katsura, Fumihiro Shoji, Tatsuro Okamoto, Yoshihiko Maehara
OBJECTIVES: Radiologically small-sized adenocarcinomas are special entities of lung cancer, as their radiological and pathological invasiveness determines the surgical procedures applied; however, the clinicopathological features of small-sized lung adenocarcinoma adjoining cystic airspaces (Ca-ADJ) have yet to be fully clarified. The aim of this study was to elucidate the clinicopathological characteristics, including the programmed death ligand 1 (PD-L1) expression, in patients with Ca-ADJ ≤3...
August 29, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28957416/characterization-of-the-interactions-of-rabbit-neonatal-fc-receptor-fcrn-with-rabbit-and-human-igg-isotypes
#5
Bence Szikora, László Hiripi, Balázs Bender, Imre Kacskovics, Attila Iliás
Despite the increasing importance of rabbit as an animal model in pharmacological studies like investigating placental transfer of therapeutic IgGs, little is known about the molecular interaction of the rabbit neonatal Fc receptor (FcRn) with rabbit and human IgG molecules. We analyzed the interactions of the rabbit and human FcRn with rabbit and human IgG isotypes using surface plasmon resonance assay. Similar to FcRn of other species, rabbit FcRn functions in pH-dependent manner, as it binds IgGs at pH 6...
2017: PloS One
https://www.readbyqxmd.com/read/28941616/elisa-for-detection-of-variant-rabbit-haemorrhagic-disease-virus-rhdv2-antigen-in-liver-extracts
#6
K P Dalton, A Podadera, V Granda, I Nicieza, D Del Llano, R González, J R de Los Toyos, M García Ocaña, F Vázquez, J M Martín Alonso, J M Prieto, F Parra, R Casais
The emergence and rapid spread of variant of the rabbit hemorrhagic disease virus (RHDV2) require new diagnostic tools to ensure that efficient control measures are adopted. In the present study, a specific sandwich enzyme-linked immunosorbent assay (ELISA) for detection of RHDV2 antigens in rabbit liver homogenates, based on the use of an RHDV2-specific monoclonal antibody (Mab) 2D9 for antigen capture and an anti-RHDV2 goat polyclonal antibody (Pab), was developed. This ELISA was able to successfully detect RHDV2 and RHDV2 recombinant virions with high sensitivity (100%) and specificity (97...
September 21, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28935894/strain-dependent-neutralization-reveals-antigenic-variation-of-human-parechovirus-3
#7
Eveliina Karelehto, Sabine van der Sanden, James A Geraets, Aušra Domanska, Lonneke van der Linden, Dionne Hoogendoorn, Gerrit Koen, Hetty van Eijk, Shabih Shakeel, Tim Beaumont, Menno de Jong, Dasja Pajkrt, Sarah J Butcher, Katja C Wolthers
Human parechovirus 3 (HPeV3), a member of the Picornavirus family, is frequently detected worldwide. However, the observed seropositivity rates for HPeV3 neutralizing antibodies (nAbs) vary from high in Japan to low in the Netherlands and Finland. To study if this can be explained by technical differences or antigenic diversity among HPeV3 strains included in the serological studies, we determined the neutralizing activity of Japanese and Dutch intravenous immunoglobulin batches (IVIG), a rabbit HPeV3 hyperimmune polyclonal serum, and a human HPeV3-specific monoclonal antibody (mAb) AT12-015, against the HPeV3 A308/99 prototype strain and clinical isolates from Japan, the Netherlands and Australia, collected between 1989 and 2015...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28916483/recombinant-humanized-anti-vascular-endothelial-growth-factor-monoclonal-antibody-efficiently-suppresses-laser-induced-choroidal-neovascularization-in-rhesus-monkeys
#8
Wan-Wan Ji, Dong-An Yu, Peng Yang, Peng Fang, Yu-Xia Cao, Hu Li, Ning Xie, Shou-Sheng Yan
Neovascular age-related macular degeneration, characterized by abnormal choroidal neovascularization (CNV), is a major cause of blindness worldwide. Anti-vascular endothelial growth factor (VEGF) antibodies have demonstrated significant efficacy in improving visual acuity. TMAB001 is a new recombinant humanized rabbit anti-VEGF monoclonal antibody. It presents high activities in vitro studies. In the binding affinity assay, TMAB001 exhibited a high binding capability to VEGF with an affinity constant of 10(-11)M...
September 13, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28911512/cardioprotective-effects-of-hsp72%C3%A2-administration-on-ischemia-reperfusion-injury
#9
Takashi Tanimoto, Missag H Parseghian, Takehiro Nakahara, Hideki Kawai, Navneet Narula, Dongbin Kim, Robert Nishimura, Richard H Weisbart, Grace Chan, Richard A Richieri, Nezam Haider, Farhan Chaudhry, Glenn T Reynolds, John Billimek, Francis G Blankenberg, Partho P Sengupta, Artiom D Petrov, Takashi Akasaka, H William Strauss, Jagat Narula
BACKGROUND: Although early reperfusion is the most desirable intervention after ischemic myocardial insult, it may add to damage through oxidative stress. OBJECTIVES: This study investigated the cardioprotective effects of a single intravenous dose of heat shock protein-72 (HSP72) coupled to a single-chain variable fragment (Fv) of monoclonal antibody 3E10 (3E10Fv) in a rabbit ischemia-reperfusion model. The Fv facilitates rapid transport of HSP72 into cells, even with intact membranes...
September 19, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28900323/detection-and-significance-of-human-epidermal-growth-factor-receptor-2-expression-in-gastric-adenocarcinoma
#10
Sutapa Halder, Debjani Mallick, Priyanka Mondal, Debajyoti Singha Roy, Aniket Halder, Sudipta Chakrabarti
BACKGROUND: Human epidermal growth factor receptor 2 (HER2) is involved in the pathogenesis of several types of cancer, including gastric cancer. Overexpression of HER2 is noted in 10%-22.8% of gastric adenocarcinoma and its identification is of immense importance for management by targeted drugs. Detection of HER2 expression in gastric malignancies has not been undertaken previously in the local population. OBJECTIVE: To ascertain HER2 immunohistochemical expression in gastric adenocarcinoma and its relationship with the anatomic location and histomorphology...
April 2017: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/28856066/estimation-of-time-period-for-effective-human-inhalational-anthrax-treatment-including-antitoxin-therapy
#11
Lewis Rubinson, Alfred Corey, Dan Hanfling
INTRODUCTION: Infrequent natural human inhalational anthrax cases coupled with high bioterrorism risk have brought about use of animal models to serve as the basis for approval of novel treatments. For inhalational anthrax, protective antigen (PA) drives much of the mortality, and raxibacumab, an anti-PA monoclonal antibody, has been approved for therapeutic use using the Animal Rule. Given the paucity of human inhalational anthrax clinical data including PA kinetics, the post-exposure period for effective treatment of human disease remains unknown...
July 28, 2017: PLoS Currents
https://www.readbyqxmd.com/read/28842495/chimeric-rabbit-human-fab-antibodies-against-the-hepatitis-be-antigen-and-their-potential-applications-in-assays-characterization-and-therapy
#12
Xiaolei Zhuang, Norman R Watts, Ira W Palmer, Joshua D Kaufman, Altaira D Dearborn, Joni L Trenbeath, Elif Eren, Alasdair C Steven, Christoph Rader, Paul T Wingfield
Hepatitis B virus (HBV) infection afflicts millions worldwide, causing cirrhosis and liver cancer. HBV e-antigen (HBeAg), a clinical marker for disease severity, is a soluble variant of the viral capsid protein. HBeAg is not required for viral replication but is implicated in establishing immune tolerance and chronic infection. The structure of recombinant e-antigen (rHBeAg) was recently determined, yet to date, the exact nature and quantitation of HBeAg still remain uncertain. Here, to further characterize HBeAg, we used phage display to produce a panel of chimeric rabbit/human monoclonal antibody fragments (both Fab and scFv) against rHBeAg...
October 6, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28818634/mining-na%C3%A3-ve-rabbit-antibody-repertoires-by-phage-display-for-monoclonal-antibodies-of-therapeutic-utility
#13
Haiyong Peng, Thomas Nerreter, Jing Chang, Junpeng Qi, Xiuling Li, Pabalu Karunadharma, Gustavo J Martinez, Mohammad Fallahi, Jo Soden, Jim Freeth, Roger R Beerli, Ulf Grawunder, Michael Hudecek, Christoph Rader
Owing to their high affinities and specificities, rabbit monoclonal antibodies (mAbs) have demonstrated value and potential primarily as basic research and diagnostic reagents, but, in some cases, also as therapeutics. To accelerate access to rabbit mAbs bypassing immunization, we generated a large naïve rabbit antibody repertoire represented by a phage display library encompassing >10 billion independent antibodies in chimeric rabbit/human Fab format and validated it by next-generation sequencing. Panels of rabbit mAbs selected from this library against two emerging cancer targets, ROR1 and ROR2, revealed high diversity, affinity, and specificity...
September 15, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28750668/from-hybridomas-to-a-robust-microalgal-based-production-platform-molecular-design-of-a-diatom-secreting-monoclonal-antibodies-directed-against-the-marburg-virus-nucleoprotein
#14
Franziska Hempel, Michael Maurer, Björn Brockmann, Christian Mayer, Nadine Biedenkopf, Anne Kelterbaum, Stephan Becker, Uwe G Maier
BACKGROUND: The ideal protein expression system should provide recombinant proteins in high quality and quantity involving low production costs only. However, especially for complex therapeutic proteins like monoclonal antibodies many challenges remain to meet this goal and up to now production of monoclonal antibodies is very costly and delicate. Particularly, emerging disease outbreaks like Ebola virus in Western Africa in 2014-2016 make it necessary to reevaluate existing production platforms and develop robust and cheap alternatives that are easy to handle...
July 27, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28739636/immunoassay-for-human-serum-erythroferrone
#15
Tomas Ganz, Grace Jung, Arash Naeim, Yelena Ginzburg, Zahra Pakbaz, Patrick B Walter, Léon Kautz, Elizabeta Nemeth
Erythroferrone (ERFE) is a glycoprotein hormone secreted by erythroblasts in response to stimulation by erythropoietin (EPO). We previously demonstrated that ERFE messenger RNA expression and serum protein concentration increase in mice subjected to hemorrhage or EPO therapy, that ERFE acts on hepatocytes to suppress hepcidin, and that the resulting decrease in hepcidin augments iron delivery for intensified erythropoiesis. We also showed that ERFE contributes to pathological hepcidin suppression and iron overload in mice with nontransfused β-thalassemia...
September 7, 2017: Blood
https://www.readbyqxmd.com/read/28737447/pmab-52-specific-and-sensitive-monoclonal-antibody-against-cat-podoplanin-for-immunohistochemistry
#16
Shinji Yamada, Shunsuke Itai, Takuro Nakamura, Miyuki Yanaka, Noriko Saidoh, Yao-Wen Chang, Saori Handa, Hiroyuki Harada, Yumiko Kagawa, Osamu Ichii, Satoru Konnai, Mika K Kaneko, Yukinari Kato
Podoplanin (PDPN) is expressed in several normal tissues, such as lymphatic endothelial cells, podocytes of renal glomerulus, and type I alveolar cells of lung. PDPN activates platelet aggregation by binding to C-type lectin-like receptor-2 (CLEC-2) on platelet. Although monoclonal antibodies (mAbs) against human PDPN, mouse PDPN, rat PDPN, rabbit PDPN, dog PDPN, and bovine PDPN have been established, anticat PDPN (cPDPN) mAbs have not been developed. In this study, we immunized mice with Chinese hamster ovary (CHO)-K1 cell lines expressing cPDPN, and developed anti-cPDPN mAbs...
July 24, 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28726771/rapid-elicitation-of-broadly-neutralizing-antibodies-to-hiv-by-immunization-in-cows
#17
Devin Sok, Khoa M Le, Melissa Vadnais, Karen L Saye-Francisco, Joseph G Jardine, Jonathan L Torres, Zachary T Berndsen, Leopold Kong, Robyn Stanfield, Jennifer Ruiz, Alejandra Ramos, Chi-Hui Liang, Patricia L Chen, Michael F Criscitiello, Waithaka Mwangi, Ian A Wilson, Andrew B Ward, Vaughn V Smider, Dennis R Burton
No immunogen to date has reliably elicited broadly neutralizing antibodies to HIV in humans or animal models. Advances in the design of immunogens that antigenically mimic the HIV envelope glycoprotein (Env), such as the soluble cleaved trimer BG505 SOSIP, have improved the elicitation of potent isolate-specific antibody responses in rabbits and macaques, but so far failed to induce broadly neutralizing antibodies. One possible reason for this failure is that the relevant antibody repertoires are poorly suited to target the conserved epitope regions on Env, which are somewhat occluded relative to the exposed variable epitopes...
August 3, 2017: Nature
https://www.readbyqxmd.com/read/28724261/development-of-a-sandwich-enzyme-linked-immunosorbent-assay-for-dtmp-gh-fusion-protein-by-rational-immunogen-selection
#18
Song Wang, Mingqiang Shen, Shilei Chen, Cheng Wang, Fang Chen, Mo Chen, Gaomei Zhao, Xinze Ran, Tianmin Cheng, Yongping Su, Yang Xu, Junping Wang
dTMP-GH is a chimeric protein containing a tandem dimer of thrombopoietin mimetic peptide (dTMP) fused to human growth hormone (hGH) prepared previously by our team. It shows significant bioactivity in promoting thrombocytopoiesis, but detection of intact dTMP-GH in plasma is still a challenge due to the presence of endogenous hGH. In this study, a rabbit polyclonal antibody with high affinity to dTMP was obtained with a BSA-conjugated immunogen composed of 20 amino acids sequence spanning two TMP and the linker...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28715494/development-and-validation-of-novel-biomarker-assays-for-osteoarthritis
#19
Khadija Ourradi, Yunhe Xu, Dominique de Seny, John Kirwan, Ashley Blom, Mohammed Sharif
BACKGROUND: Osteoarthritis (OA) is the most common chronic joint disease usually diagnosed at relatively advanced stages when there is irreparable damage to the joint(s). Recently, we have identified two novel biomarkers C3f and V65 which appear to be OA-specific and therefore potential markers of early disease. We report the development of immunoassays for quantitative measure of these two novel biomarkers. METHOD: Monoclonal and polyclonal antibodies were generated by immunising mouse and rabbits respectively with peptide-carrier conjugates of C3f and V65...
2017: PloS One
https://www.readbyqxmd.com/read/28705139/anaplastic-lymphoma-kinase-alk-mutations-in-patients-with-adenocarcinoma-of-the-lung
#20
N Mohamad, P Jayalakshmi, A Rhodes, C-K Liam, J-L Tan, S Yousoof, P Rajadurai
BACKGROUND: Non-small cell lung cancer (NSCLC) is a major cause of cancer-related death. Approximately 2-16% of NSCLC patients with wild-type epidermal growth factor receptor (EGFR) harbour anaplastic lymphoma kinase (ALK) mutations. Both EGFR and ALK mutations occur most commonly in Asian patients with NSCLC. As targeted therapy is available for NSCLC patients with these mutations, it is important to establish reliable assays and testing strategies to identify those most likely to benefit from this therapy...
October 2017: British Journal of Biomedical Science
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