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rabbit monoclonal antibody

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https://www.readbyqxmd.com/read/28292888/antibody-mediated-inhibition-of-egfr-reduces-phosphate-excretion-and-induces-hyperphosphatemia-and-mild-hypomagnesemia-in-mice
#1
Bernardo Ortega, Jason M Dey, Allison R Gardella, Jacob Proano, Deanna Vaneerde
Monoclonal antibody therapies targeting the EGF receptor (EGFR) frequently result in hypomagnesemia in human patients. In contrast, EGFR tyrosine kinase inhibitors do not affect Mg(2+) balance in patients and only have a mild effect on Mg(2+) homeostasis in rodents at elevated doses. EGF has also been shown to affect phosphate (Pi) transport in rat and rabbit proximal convoluted tubules (PCT), but evidence from studies targeting EGFR and looking at Pi excretion in whole animals is still missing. Thus, the role of EGF in regulating reabsorption of Mg(2+) and/or Pi in the kidney remains controversial...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28288206/an-in-vivo-system-for-directed-experimental-evolution-of-rabbit-haemorrhagic-disease-virus
#2
Robyn N Hall, Lorenzo Capucci, Markus Matthaei, Simona Esposito, Peter J Kerr, Michael Frese, Tanja Strive
The calicivirus Rabbit haemorrhagic disease virus (RHDV) is widely used in Australia as a biocontrol agent to manage wild European rabbit (Oryctolagus cuniculus) populations. However, widespread herd immunity limits the effectiveness of the currently used strain, CAPM V-351. To overcome this, we developed an experimental platform for the selection and characterisation of novel RHDV strains. As RHDV does not replicate in cell culture, variant viruses were selected by serially passaging a highly virulent RHDV field isolate in immunologically naïve laboratory rabbits that were passively immunised 18-24 hours post-challenge with a neutralising monoclonal antibody...
2017: PloS One
https://www.readbyqxmd.com/read/28281773/b-cell-epitopes-of-african-horse-sickness-virus-serotype-4-recognised-by-immune-horse-sera
#3
Evans M Mathebula, Frederika E Faber, Wouter Van Wyngaardt, Antoinette Van Schalkwyk, Alri Pretorius, Jeanni Fehrsen
Identifying antigenic proteins and mapping their epitopes is important for the development of diagnostic reagents and recombinant vaccines. B-cell epitopes of African horse sickness virus (AHSV) have previously been mapped on VP2, VP5, VP7 and NS1, using mouse, rabbit and chicken monoclonal antibodies. A comprehensive study of the humoral immune response of five vaccinated horses to AHSV-4 antigenic peptides was undertaken. A fragmented-genome phage display library expressing a repertoire of AHSV-4 peptides spanning the entire genome was constructed...
February 24, 2017: Onderstepoort Journal of Veterinary Research
https://www.readbyqxmd.com/read/28277903/a-human-monoclonal-antibody-that-specifically-binds-and-inhibits-the-staphylococcal-complement-inhibitor-protein-scin
#4
Hedzer Hoekstra, Francisco Romero Pastrana, Hendrik P J Bonarius, Kok P M van Kessel, Goffe S Elsinga, Neeltje Kooi, Herman Groen, Jan Maarten van Dijl, Girbe Buist
Staphylococcus aureus is a serious public health burden causing a wide variety of infections. Earlier detection of such infections could result in faster and more directed therapies that also prevent resistance development. Human monoclonal antibodies (humAbs) are promising tools for diagnosis and therapy owing to their relatively straightforward synthesis, long history of safe clinical use and high target specificity. Here we show that the humAb 6D4, which was obtained from a random screen of B-cells producing antibodies that bind to whole cells of S...
February 16, 2017: Virulence
https://www.readbyqxmd.com/read/28275152/a-semisynthetic-streptococcus-pneumoniae-serotype-8-glycoconjugate-vaccine
#5
Benjamin Schumann, Heung Sik Hahm, Sharavathi G Parameswarappa, Katrin Reppe, Annette Wahlbrink, Subramanian Govindan, Paulina Kaplonek, Liise-Anne Pirofski, Martin Witzenrath, Chakkumkal Anish, Claney L Pereira, Peter H Seeberger
Glycoconjugate vaccines based on capsular polysaccharides (CPSs) of pathogenic bacteria such as Streptococcus pneumoniae successfully protect from disease but suffer from incomplete coverage, are troublesome to manufacture from isolated CPSs, and lack efficacy against certain serotypes. Defined, synthetic oligosaccharides are an attractive alternative to isolated CPSs but require the identification of immunogenic and protective oligosaccharide antigens. We describe a medicinal chemistry strategy based on a combination of automated glycan assembly (AGA), glycan microarray-based monoclonal antibody (mAb) reverse engineering, and immunological evaluation in vivo to uncover a protective glycan epitope (glycotope) for S...
March 8, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28253852/signature-tagged-mutagenesis-screening-revealed-a-novel-smooth-to-rough-transition-determinant-of-salmonella-enterica-serovar-enteritidis
#6
Yang Jiao, Rongxian Guo, Peipei Tang, Xilong Kang, Junlei Yin, Kaiyue Wu, Shizhong Geng, Qiuchun Li, Jun Sun, Xiulong Xu, Xiaohui Zhou, Junji Gan, Xinan Jiao, Xiufan Liu, Zhiming Pan
BACKGROUND: Salmonella enterica serovar Enteritidis (S. Enteritidis) has emerged as one of the most important food-borne pathogens for humans. Lipopolysaccharide (LPS), as a component of the outer membrane, is responsible for the virulence and smooth-to-rough transition in S. Enteritidis. In this study, we screened S. Enteritidis signature-tagged transposon mutant library using monoclonal antibody against somatic O9 antigen (O9 MAb) and O9 factor rabbit antiserum to identify novel genes that are involved in smooth-to-rough transition...
March 3, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28237764/evaluation-of-a-novel-multi-immunogen-vaccine-strategy-for-targeting-4e10-10e8-neutralizing-epitopes-on-hiv-1-gp41-membrane-proximal-external-region
#7
Saikat Banerjee, Heliang Shi, Marisa Banasik, Hojin Moon, William Lees, Yali Qin, Andrew Harley, Adrian Shepherd, Michael W Cho
The membrane proximal external region (MPER) of HIV-1 gp41 is targeted by broadly neutralizing antibodies (bnAbs) 4E10 and 10E8. In this proof-of-concept study, we evaluated a novel multi-immunogen vaccine strategy referred to as Incremental, Phased Antigenic Stimulation for Rapid Antibody Maturation (IPAS-RAM) to induce 4E10/10E8-like bnAbs. Rabbits were immunized sequentially, but in a phased manner, with three immunogens that are progressively more native (gp41-28×3, gp41-54CT, and rVV-gp160DH12). Although nAbs were not induced, epitope-mapping analyses indicated that IPAS-RAM vaccination was better able to target antibodies towards the 4E10/10E8 epitopes than homologous prime-boost immunization using gp41-28×3 alone...
February 23, 2017: Virology
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
#8
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...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28219472/immunodiagnosis-of-paramphistomosis-using-monoclonal-antibody-based-sandwich-elisa-for-detection-of-paramphistomum-gracile-circulating-16-kda-antigen
#9
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/28194878/platelet-activated-serum-might-have-a-therapeutic-effect-on-damaged-articular-cartilage
#10
Munetaka Yokoyama, Masato Sato, Yoshiki Tani, Miyuki Yokoyama, Mami Kokubo, Masayuki Yamato, Teruo Okano, Joji Mochida
Platelet-activated serum (PAS) was collected from rabbits. This contains high concentrations of growth factors, including vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF)-BB, and transforming growth factor-beta (TGF-β). PAS was injected into the knee joints of Japanese White rabbits subjected to anterior cruciate ligament transection (ACL-T) to investigate its therapeutic effects on articular cartilage. The effect of Avastin (an anti-VEGF monoclonal antibody) on VEGF expression was also investigated...
February 14, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28186433/production-of-monoclonal-antibody-against-excretory-secretory-antigen-of-fasciola-hepatica-and-evaluation-of-its-efficacy-in-the-diagnosis-of-fascioliasis
#11
Samaneh Abdolahi Khabisi, Bahador Sarkari, Abdolali Moshfe, Sedigheh Jalali
Parasitological methods are not helpful for the diagnosis of fascioliasis in acute and invasive periods of the disease. Detection of coproantigens seems to be a suitable alternative approach in the diagnosis of fascioliasis. The present study aimed to develop a reliable antigen detection system, using monoclonal antibodies raised against excretory-secretory (ES) antigen of Fasciola hepatica, for the diagnosis of fascioliasis. Fasciola adult worms were collected from the bile ducts of infected animals. Species of the fluke was determined by polymerase chain reaction-restriction fragment length polymorphism (RFLP-PCR)...
February 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28174489/alk-gene-expression-status-in-pleural-effusion-predicts-tumor-responsiveness-to-crizotinib-in-chinese-patients-with-lung-adenocarcinoma
#12
Zheng Wang, Xiaonan Wu, Xiaohong Han, Gang Cheng, Xinlin Mu, Yuhui Zhang, Di Cui, Chang Liu, Dongge Liu, Yuankai Shi
OBJECTIVE: The relationship between anaplastic lymphoma kinase (ALK) expression in malignant pleural effusion (MPE) samples detected only by Ventana immunohistochemistry (IHC) ALK (D5F3) and the efficacy of ALK-tyrosine kinase inhibitor therapy is uncertain. METHODS: Ventana anti-ALK (D5F3) rabbit monoclonal primary antibody testing was performed on 313 cell blocks of MPE samples from Chinese patients with advanced lung adenocarcinoma, and fluorescence in situ hybridization (FISH) was used to verify the ALK gene status in Ventana IHC ALK (D5F3)-positive samples...
December 2016: Chinese Journal of Cancer Research, Chung-kuo Yen Cheng Yen Chiu
https://www.readbyqxmd.com/read/28165915/humanization-of-rabbit-monoclonal-antibodies-via-grafting-combined-kabat-imgt-paratome%C3%A2-complementarity-determining-regions-rationale-and-examples
#13
Yi-Fan Zhang, Mitchell Ho
Rabbit monoclonal antibodies (RabMAbs) can recognize diverse epitopes, including those poorly immunogenic in mice and humans. However, there have been only a few reports on RabMAb humanization, an important antibody engineering step usually done before clinical applications are investigated. To pursue a general method for humanization of RabMAbs, we analyzed the complex structures of five RabMAbs with their antigens currently available in the Protein Data Bank, and identified antigen-contacting residues on the rabbit Fv within the 6 Angstrom distance to its antigen...
February 6, 2017: MAbs
https://www.readbyqxmd.com/read/28145884/the-significance-of-programmed-cell-death-ligand-1-expression-in-resected-lung-adenocarcinoma
#14
Shafei Wu, Xiaohua Shi, Jian Sun, Yuanyuan Liu, Yufeng Luo, Zhiyong Liang, Jinghui Wang, Xuan Zeng
BACKGROUND: Lung adenocarcinoma (AD) is a common variant of non-small cell lung cancer (NSCLC). Programmed cell death protein 1/programmed cell death ligand 1 (PD1/PD-L1) are promising immunotherapy targets and its expression may be an important biomarker of predicting clinical response. In this study, we evaluated PD-L1 expression in conjunction with clinicopathological characteristics and outcomes in resected lung adenocarcinoma. RESULTS: This study included 133 cases of lung adenocarcinoma...
January 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28123480/correlative-study-on-the-jak-stat-psm%C3%AE-3-signal-transduction-pathway-in-asthenozoospermia
#15
Junguo Li, Li Zhang, Bing Li
The aim of the present study was to investigate the possible mechanism of Janus kinase (JAK)-signal transduction and activator of transcription (STAT)/PSMβ3 signaling in the occurrence of asthenozoospermia. We examined seminal fluid samples from 30 cases of asthenozoospermia and 30 healthy controls. Sperm was collected using the Percoll density gradient centrifugation method. The expression of JAK, STAT and PSMβ3 mRNA was assessed by reverse-transcription quantitative PCR and the protein levels of p-JAK, p-STAT and PSMβ3 were measured by western blot analysis...
January 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28115346/targeting-alpha-toxin-to-mitigate-its-lethal-toxicity-in-ferret-and-rabbit-models-of-staphylococcus-aureus-necrotizing-pneumonia
#16
Binh An Diep, Jamese J Hillard, Vien T M Le, Christine Tkaczyk, Hoan N Le, Vuvi G Tran, Renee L Rao, Etyene Castro Dip, Eliane P Pereira-Franchi, Paulyn Cha, Scott Jacobson, Rosemary Broome, Lily I Cheng, William Weiss, Laszlo Prokai, Vien Nguyen, C Ken Stover, Bret R Sellman
The role broad spectrum antibiotics play in the spread of antimicrobial resistance, coupled with their effect on the healthy microbiome have led to advances in pathogen specific approaches for the prevention or treatment of serious bacterial infections. One approach in clinical testing is passive immunization with a monoclonal antibody (mAb) targeting alpha toxin for the prevention or treatment of Staphylococcus aureus pneumonia. Passive immunization with the human anti-alpha toxin mAb, MEDI4893* has been shown to improve disease outcome in murine S...
January 23, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28111342/development-of-a-highly-specific-her2-monoclonal-antibody-for-immunohistochemistry-using-protein-microarray-chips
#17
Lili Qi, Lixin Zhou, Mingmin Lu, Kehu Yuan, Zhongwu Li, Guiyin Wu, Xiaozheng Huang, Yi Shen, Min Zhao, Wei Fu, Boyang Chu, Guangli Wang, Fangfang Ren, Donghui Ma, Jian Chen
HER2 is an orphan receptor tyrosine kinase of the EGFR families and is considered to be a key tumor driver gene [1]. Breast cancer and gastric cancer with HER2 amplification can be effectively treated by its neutralizing antibody, Herceptin. In clinic, Immunohistochemistry (IHC) was used as the primary screening method to diagnose HER2 amplification [2]. However, recent evidence suggested that the frequently used rabbit HER2 antibody 4B5 cross reacted with another family member HER4 [3]. IHC staining with 4B5 also indicated that there was strong non-specific cytoplasmic and nuclear signals in normal gastric mucosal cells and some gastric cancer samples...
January 19, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28107820/evidence-against-a-role-for-jaagsiekte-sheep-retrovirus-in-human-lung-cancer
#18
A Dusty Miller, Marcelo De Las Heras, Jingyou Yu, Fushun Zhang, Shan-Lu Liu, Andrew E Vaughan, Thomas L Vaughan, Raul Rosadio, Stefano Rocca, Giuseppe Palmieri, James J Goedert, Junya Fujimoto, Ignacio I Wistuba
BACKGROUND: Jaagsiekte sheep retrovirus (JSRV) causes a contagious lung cancer in sheep and goats that can be transmitted by aerosols produced by infected animals. Virus entry into cells is initiated by binding of the viral envelope (Env) protein to a specific cell-surface receptor, Hyal2. Unlike almost all other retroviruses, the JSRV Env protein is also a potent oncoprotein and is responsible for lung cancer in animals. Of concern, Hyal2 is a functional receptor for JSRV in humans. RESULTS: We show here that JSRV is fully capable of infecting human cells, as measured by its reverse transcription and persistence in the DNA of cultured human cells...
January 20, 2017: Retrovirology
https://www.readbyqxmd.com/read/28103139/endotoxin-neutralization-by-an-o-antigen-specific-monoclonal-antibody-a-potential-novel-therapeutic-approach-against-klebsiella-pneumoniaest258
#19
Valéria Szijártó, Luis M Guachalla, Katharina Hartl, Cecília Varga, Adriana Badarau, Irina Mirkina, Zehra C Visram, Lukas Stulik, Christine A Power, Eszter Nagy, Gábor Nagy
Klebsiella pneumoniae ST258 is a globally distributed multi-drug resistant pathogen responsible for severe invasive infections. In this study, the different virulence potential of K. pneumoniae ST258 isolates in endotoxin susceptible versus resistant animal models was shown. Furthermore, ST258 clinical isolates were found highly sensitive to the bactericidal effect of naive animal and human serum. These observations imply that LPS, released from the rapidly lysed bacteria, may contribute to the high mortality associated with ST258 bacteremia cases...
January 19, 2017: Virulence
https://www.readbyqxmd.com/read/28097685/cartilage-oligomeric-matrix-protein-comp-neo-epitope-in-the-synovial-fluid-of-horses-with-acute-lameness-a-new-biomarker-for-the-early-stages-of-osteoarthritis
#20
E Skiöldebrand, S Ekman, L MattssonHultén, E Svala, K Björkman, A Lindahl, A Lundqvist, P Önnerfjord, C Sihlbom, U Rüetschi
BACKGROUND: Clinical tools to diagnose the early changes of osteoarthritis (OA) that occur in the articular cartilage are lacking. OBJECTIVES: We sought to identify and quantify a novel cartilage oligomeric matrix protein (COMP) neo-epitope in the synovial fluid from the joints of healthy horses and those with different stages of OA. STUDY DESIGN: In vitro quantitative proteomics and assay development with application in synovial fluids samples obtained from biobanks of well-characterised horses...
January 17, 2017: Equine Veterinary Journal
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