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rabbit monoclonal antibody

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https://www.readbyqxmd.com/read/27925405/animal-to-human-dose-translation-of-obiltoxaximab-for-treatment-of-inhalational-anthrax-under-the-us-fda-animal-rule
#1
C F Nagy, J Mondick, N Serbina, L S Casey, S E Carpenter, J French, R Guttendorf
Obiltoxaximab, a monoclonal antibody against protective antigen (PA), is approved for treatment of inhalational anthrax under the US Food and Drug Administration's (FDA) Animal Rule. The human dose was selected and justified by comparing observed obiltoxaximab exposures in healthy and infected New Zealand White rabbits and cynomolgus macaques to observed exposures in healthy humans, to simulated exposures in healthy and infected humans, and to serum PA levels in infected animals. In humans, at 16 mg/kg intravenous, obiltoxaximab AUC was >2 times that in animals, while maximum serum concentrations were comparable to those in animals and were maintained in excess of the concentration required for PA neutralization in infected animals for 2-3 weeks...
December 7, 2016: Clinical and Translational Science
https://www.readbyqxmd.com/read/27918764/effect-of-fluorouracil-leucovorin-and-oxaliplatin-with-or-without-onartuzumab-in-her2-negative-met-positive-gastroesophageal-adenocarcinoma-the-metgastric-randomized-clinical-trial
#2
Manish A Shah, Yung-Jue Bang, Florian Lordick, Maria Alsina, Meng Chen, Stephen P Hack, Jean Marie Bruey, Dustin Smith, Ian McCaffery, David S Shames, See Phan, David Cunningham
Importance: Dysregulation of the mesenchymal-epithelial transition (MET) signaling pathway is associated with poor prognosis in gastroesophageal adenocarcinoma (GEC). We report results of METGastric, a phase 3 trial of the MET inhibitor onartuzumab plus standard first-line chemotherapy for human epidermal growth factor receptor 2 (HER2)-negative, MET-positive, advanced GEC. Objective: To determine whether the addition of onartuzumab to first-line fluorouracil, leucovorin, and oxaliplatin (mFOLFOX6) improves efficacy compared with mFOLFOX6 plus placebo in HER2-negative, MET-positive GEC...
December 1, 2016: JAMA Oncology
https://www.readbyqxmd.com/read/27910803/the-prognostic-and-predictive-value-of-tmprss2-erg-gene-fusion-and-erg-protein-expression-in-prostate-cancer-biopsies
#3
Kasper Drimer Berg
BACKGROUND: The clinical course of prostate carcinoma (PCa) is very heterogeneous. Consequently, a personalised approach for risk stratification and treatment planning is important. Recently, it has become evident that PCa, also at the genomic level, is heterogeneous. An early and common alteration is the gene fusion between the transmembrane protease serine 2 (TMPRSS2) gene and the v-ets avian erythroblastosis virus E26 oncogene homolog (ERG) gene resulting in expression of the oncoprotein ERG...
December 2016: Danish Medical Journal
https://www.readbyqxmd.com/read/27837159/variability-in-platelet-derived-growth-factor-receptor-alpha-antibody-specificity-may-impact-clinical-utility-of-immunohistochemistry-assays
#4
Timothy R Holzer, Leslie O'Neill Reising, Kelly M Credille, Andrew E Schade, Gerard J Oakley
Aberrant regulation of the receptor tyrosine kinase platelet-derived growth factor alpha (PDGFRα) is implicated in several types of cancer. Inhibition of the PDGFRα pathway may be a beneficial therapy, and detection of PDGFRα in tumor biopsies may lead to insights about which patients respond to therapy. Exploratory or clinical biomarker use of PDGFRα IHC has been frequently reported, often with polyclonal antibody sc-338. An sc-338-based assay was systematically compared with anti-PDGFRα rabbit monoclonal antibody D13C6 using immunoblot profiling and IHC in formalin-fixed and paraffin-embedded human tumor cell lines...
December 2016: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/27834350/quantitative-and-pathologist-read-comparison-of-the-heterogeneity-of-programmed-death-ligand-1-pd-l1-expression-in-non-small-cell-lung-cancer
#5
Jamaal A Rehman, Gang Han, Daniel E Carvajal-Hausdorf, Brad E Wasserman, Vasiliki Pelekanou, Nikita L Mani, Joseph McLaughlin, Kurt A Schalper, David L Rimm
PD-L1 is expressed in a percentage of lung cancer patients and those patients show increased likelihood of response to PD-1 axis therapies. However, the methods and assays for the assessment of PD-L1 using immunohistochemistry are variable and PD-L1 expression appears to be highly heterogeneous. Here, we examine assay heterogeneity parameters toward the goal of determining variability of sampling and the variability due to pathologist-based reading of the immunohistochemistry slide. SP142, a rabbit monoclonal antibody, was used to detect PD-L1 by both chromogenic immunohistochemistry and quantitative immunofluorescence using a laboratory-derived test...
November 11, 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27812179/protein-o-mannosylation-in-the-murine-brain-occurrence-of-mono-o-mannosyl-glycans-and-identification-of-new-substrates
#6
Markus F Bartels, Patrick R Winterhalter, Jin Yu, Yan Liu, Mark Lommel, Frank Möhrlen, Huaiyu Hu, Ten Feizi, Ulrika Westerlind, Thomas Ruppert, Sabine Strahl
Protein O-mannosylation is a post-translational modification essential for correct development of mammals. In humans, deficient O-mannosylation results in severe congenital muscular dystrophies often associated with impaired brain and eye development. Although various O-mannosylated proteins have been identified in the recent years, the distribution of O-mannosyl glycans in the mammalian brain and target proteins are still not well defined. In the present study, rabbit monoclonal antibodies directed against the O-mannosylated peptide YAT(α1-Man)AV were generated...
2016: PloS One
https://www.readbyqxmd.com/read/27804941/-value-of-the-expression-of-ki-67-and-membrane-protein-glucose-transporter-glut1-in-the-diagnosis-of-neoplastic-transformation-of-the-oral-mucosal-epithelium
#7
A A Ivina, V A Semkin, I I Babichenko
AIM: to investigate the expression of GLUT1 protein in relation to the proliferative activity of cells and the degree of neoplastic transformation of the epithelium of the oral mucosa (OM). SUBJECTS AND METHODS: OM biopsies from 44 patients were investigated. 14 cases (31.9%) were diagnosed with focal epithelial hyperplasia of the OM; 13 (29.5%) cases had squamous intraepithelial neoplasia (SIN) and 17 (38.6%) had squamous cell carcinoma. Ten intact MO samples were used as a control group...
2016: Arkhiv Patologii
https://www.readbyqxmd.com/read/27798691/antigenicity-of-a-bacterially-expressed-triple-chimeric-antigen-of-plasmodium-falciparum-aarp-msp-311-and-msp-119-pfamsp-fu35
#8
Aakanksha Kalra, Jyotheeswara Reddy Edula, Puneet Kumar Gupta, Alok Kumar Pandey, Virander S Chauhan
Development of fusion chimeras as potential vaccine candidates is considered as an attractive strategy to generate effective immune responses to more than one antigen using a single construct. Here, we described the design, production, purification and antigenicity of a fusion chimera (PfAMSP-Fu35), comprised of immunologically relevant regions of three vaccine target malaria antigens, PfAARP, PfMSP-3 and PfMSP-1. The recombinant PfAMSP-Fu35 is expressed as a soluble protein and purified to homogeneity with ease at a yield of ~ 7 mg L-1...
2016: PloS One
https://www.readbyqxmd.com/read/27736501/validation-of-cross-species-reactivity-of-the-vegf-a-pdgfr%C3%AE-bifunctional-antibody-pf-06653157
#9
Roshan Ashoor, Dong Lee, Alvan Cheng, Bart Jessen, Wenhu Huang
PURPOSE: PF-06653157 is a bifunctional antagonist monoclonal antibody (mAb) that targets human VEGF-A ligand and PDGF-Rβ. With the advent of PF-06653157 as an angiogenesis inhibitor and potential treatment for angiogenesis deregulation diseases, a relevant toxicology species is needed for toxicity and efficacy studies. Investigative studies were conducted to validate the mAb dual antagonist properties in a human system and determine its cross-reactive pharmacology in nonhuman cells. METHODS: Sequence alignment was used to determine percent sequence identity of VEGF and PDGF receptors and ligands; qualitative reverse transcription polymerase chain reaction (qRT-PCR) was used to determine the presence of PDGF-Rβ on cells of interest...
December 2016: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/27734678/electrochemical-sandwich-immunosensor-for-determination-of-exosomes-based-on-surface-marker-mediated-signal-amplification
#10
Ximena Doldán, Pablo Fagúndez, Alfonso Cayota, Justo Laíz, Juan Pablo Tosar
Extracellular vesicles (EVs), namely exosomes and microvesicles, are important mediators of intercellular communication pathways. Since EVs can be detected in a variety of biofluids and contain a specific set of biomarkers which are reminiscent of their parental cells, they show great promise in clinical diagnostics as EV analysis can be performed in minimally-invasive liquid biopsies. However, reliable, fast and cost-effective methods for their determination are still needed, especially if decentralized analysis is intended...
October 13, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27723054/selection-of-a-monoclonal-antibody-by-elisa-immunoblotting-and-quartz-crystal-microbalance-technology-for-immunohistochemical-detection-of-mycoplasma-mycoides-subsp-mycoides
#11
Mirella Luciani, Gisella Armillotta, Laura Manna, Antonella Ciarelli, Tiziana Di Febo, Ivanka Krasteva, Attilio Pini, Flavio Sacchini, Anna Rita D'Angelo
An immunohistochemical (IHC) technique was optimised using a monoclonal antibody (MAb) to detect Mycoplasma mycoides subsp. mycoides (Mmm), the agent of Contagious Bovine Pleuropneumonia (CBPP), in sections of lung tissue. A panel of MAbs was produced and screened for Mmm speci city and for cross-reactivity against other mycoplasmas belonging and not belonging to the Mycoplasma mycoides cluster, using in parallel indirect ELISA (i-ELISA) and Immunoblotting (IB). Based on i-ELISA and IB characterization data, 1 MAb (clone 3G10E7) was selected and its highest a nity vs Mmm was con rmed by the Quartz Crystal Microbalance (QCM) technology...
July 15, 2016: Veterinaria Italiana
https://www.readbyqxmd.com/read/27721279/immunohistochemical-expression-of-ets-related-gene-transcriptional-factor-in-adenocarcinoma-prostate-and-its-correlation-with-gleason-score
#12
Rahul Mannan, Tejinder Singh Bhasin, Mridu Manjari, Gagandeep Singh, Puneet Kaur Bhatia, Sonam Sharma
BACKGROUND: Prostate carcinoma is the second leading cause of cancer-related deaths in males worldwide. The burden is expected to grow 1.7 million new cases and 499,000 new deaths by 2030. In developing countries such as India, prostate carcinoma will show an increase by 140% in the next few years. Although the diagnosis of prostate carcinoma can usually be made on histological features, now a days many immunohistochemical (IHC) markers are used to distinguish it from benign mimickers as well as in predicting prognosis and treatment...
October 2016: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/27717372/development-of-a-programmed-cell-death-ligand-1-immunohistochemical-assay-validated-for-analysis-of-non-small-cell-lung-cancer-and-head-and-neck-squamous-cell-carcinoma
#13
Marlon C Rebelatto, Anita Midha, Amita Mistry, Constantine Sabalos, Nicole Schechter, Xia Li, Xiaoping Jin, Keith E Steele, Paul B Robbins, John A Blake-Haskins, Jill Walker
BACKGROUND: A high-quality programmed cell-death ligand 1 (PD-L1) diagnostic assay may help predict which patients are more likely to respond to anti-programmed cell death-1 (PD-1)/PD-L1 antibody-based cancer therapy. Here we describe a PD-L1 immunohistochemical (IHC) staining protocol developed by Ventana Medical Systems Inc. and key analytical parameters of its use in formalin-fixed, paraffin-embedded (FFPE) samples of non-small cell lung cancer (NSCLC) and head and neck squamous cell carcinoma (HNSCC)...
October 8, 2016: Diagnostic Pathology
https://www.readbyqxmd.com/read/27688725/impact-of-mtor-expression-on-clinical-outcome-in-paediatric-patients-with-b-cell-acute-lymphoblastic-leukaemia-preliminary-report
#14
Edyta Ulińska, Katarzyna Mycko, Elżbieta Sałacińska-Łoś, Agata Pastorczak, Alicja Siwicka, Wojciech Młynarski, Michał Matysiak
AIM OF THE STUDY: To characterise expression of mTOR (mammalian target of rapamycin) in childhood B-cell acute lymphoblastic leukaemia (ALL), and to evaluate a possible link between mTOR and clinical characteristics. MATERIAL AND METHODS: The examined group consisted of 21 consecutive patients, aged 1-18 years, diagnosed with B-cell ALL in 2010, and 10 relapsed B-cell ALL patients diagnosed for the first time between 2009 and 2011, who developed relapse before 2014...
2016: Contemporary Oncology Współczesna Onkologia
https://www.readbyqxmd.com/read/27667773/an-analytical-comparison-of-dako-28-8-pharmdx-assay-and-an-e1l3n-laboratory-developed-test-in-the-immunohistochemical-detection-of-programmed-death-ligand-1
#15
John Cogswell, H David Inzunza, Qiuyan Wu, John N Feder, Gabe Mintier, James Novotny, Diana M Cardona
AIM: Nivolumab, a fully human immunoglobulin G4 programmed death-1 (PD-1) immune checkpoint inhibitor antibody, has activity in melanoma, non-small-cell lung cancer (NSCLC), renal cell carcinoma (RCC), and Hodgkin lymphoma. Nivolumab is approved in the USA and EU for advanced melanoma, NSCLC, and RCC, and relapsed Hodgkin lymphoma in the USA. Programmed death-ligand 1 (PD-L1), a PD-1 ligand, is expressed on mononuclear leukocytes, myeloid cells, and tumor cells. PD-L1 is being investigated as a potential biomarker to predict the association of tumor PD-L1 expression with nivolumab efficacy...
September 26, 2016: Molecular Diagnosis & Therapy
https://www.readbyqxmd.com/read/27663086/immune-checkpoint-status-in-penile-squamous-cell-carcinoma-a-north-american-cohort
#16
Margaret Cocks, Diana Taheri, Mark W Ball, Stephania M Bezerra, Maria Del Carmen Rodriguez, Bernardo F P Ricardo, Trinity J Bivalacqua, Rajni B Sharma, Alan Meeker, Alcides Chaux, Arthur L Burnett, George J Netto
Penile squamous cell carcinoma (SCC) is primarily treated by surgical resection. Locally advanced and metastatic disease require a multidisciplinary treatment approach. However, mortality and morbidity remain high and novel molecular and immunotherapeutic targets are actively being sought. We investigated the expression of immune checkpoint markers in penile cancers. Fifty-three invasive penile SCCs diagnosed between 1985 and 2013 were retrieved from our surgical pathology archives. Representative formalin-fixed, paraffin-embedded archival blocks were used for the construction of 2 high-density tissue microarrays (TMAs)...
September 20, 2016: Human Pathology
https://www.readbyqxmd.com/read/27659816/development-of-monoclonal-antibody-based-sensitive-elisa-for-the-determination-of-cry1ie-protein-in-transgenic-plant
#17
Yuwen Zhang, Wei Zhang, Yan Liu, Jianhua Wang, Guoying Wang, Yunjun Liu
Cry1Ie is a kind of Bacillus thuringiensis (Bt) toxin protein which has a different action model than the Cry1Ab and Cry1Ac protein. The transgenic maize expressing Cry1Ie might be commercially used in the near future and it is urgent to develop a method to detect Cry1Ie protein in transgenic plants and their products. To develop an ELISA method, Cry1Ie protein was expressed in Escherichia coli strain Transetta DE3, purified with the Ni-NTA spin columns, and then validated by sequencing. Bioassay results showed that the purified Cry1Ie protein was highly toxic to the Asian corn borer...
November 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27636855/development-and-application-of-a-double-antibody-sandwich-elisa-kit-for-the-detection-of-serum-muc1-in-lung-cancer-patients
#18
Juan Wang, Shufang Zhang, Weihua Ni, Xiaoyu Zhai, Fei Xie, Hongyan Yuan, Sujun Gao, Guixiang Tai
BACKGROUND: Mucin 1 (MUC1), as an oncogene, plays an important role in the diagnosis of lung cancer. OBJECTIVE: To establish a double-antibody sandwich enzyme-linked immune sorbent assay (ELISA) kit for the detection of serum MUC1 in lung cancer patients. METHODS: Commercial mouse anti-human MUC1 monoclonal antibody and rabbit anti-human MUC1 polyclonal antibody were used to construct a double-antibody sandwich ELISA kit. The serum MUC1 levels in peripheral blood of lung disease patients and healthy individuals were detected by the double-antibody sandwich ELISA kit and CA15-3 kit, respectively...
September 9, 2016: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/27632931/serological-blind-spots-for-variants-of-human-igg3-and-igg4-by-a-commonly-used-anti-immunoglobulin-reagent
#19
Heather L Howie, Meghan Delaney, Xiaohong Wang, Lay See Er, Gestur Vidarsson, Tamara C Stegmann, Linda Kapp, Jenna N Lebedev, Yanyun Wu, James P AuBuchon, James C Zimring
BACKGROUND: Human immunoglobulin G (IgG) includes four different subtypes (IgG1, IgG2, IgG3, and IgG4), and it is also now appreciated that there are genetic variations within IgG subtypes (called isoallotypes). Twenty-nine different isoallotypes have been described, with 7, 4, 15, and 3 isoallotypes described for IgG1, IgG2, IgG3, and IgG4, respectively. The reactivity of anti-IgG with different isoallotypes has not been characterized. STUDY DESIGN AND METHODS: A novel monoclonal anti-K antibody (PugetSound Monoclonal Antibody 1 [PUMA1]) was isolated and sequenced, and a panel of PUMA1 variants was expressed, consisting of the 29 known IgG isoallotypes...
September 16, 2016: Transfusion
https://www.readbyqxmd.com/read/27630234/rationally-designed-vaccines-targeting-the-v2-region-of-hiv-1-gp120-induce-a-focused-cross-clade-reactive-biologically-functional-antibody-response
#20
Susan Zolla-Pazner, Rebecca Powell, Sara Yahyaei, Constance Williams, Xunqing Jiang, Wei Li, Shan Lu, Shixia Wang, Chitra Upadhyay, Catarina E Hioe, Max Totrov, Xiangpeng Kong
: Strong antibody (Ab) responses against V1V2 epitopes of the human immunodeficiency virus type 1 (HIV-1) gp120 envelope (Env) correlated with reduced infection rates in studies of HIV, simian-human immunodeficiency virus (SHIV), and simian immunodeficiency virus (SIV). In order to focus the Ab response on V1V2, we used six V1V2 sequences and nine scaffold proteins to construct immunogens which were tested using various immunization regimens for their ability to induce cross-reactive and biologically active V2 Abs in rabbits...
December 15, 2016: Journal of Virology
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