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rabbit monoclonal antibody

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https://www.readbyqxmd.com/read/29444803/open-source-recombinant-monoclonal-secondary-nanobodies
#1
Helge Ewers
Secondary antibodies are everyday reagents in biomedical research that are generated in animals. In this issue, Pleiner et al. (2018. J. Cell Biol. https://doi.org/10.1083/jcb.201709115) describe several single domain antibody fragments against antibodies from mouse and rabbit, so-called nanobodies that are easily produced recombinantly, and characterize their use in Western blotting, enzyme-linked immunosorbent assay, and immunofluorescence assays.
February 14, 2018: Journal of Cell Biology
https://www.readbyqxmd.com/read/29442712/development-of-a-colloidal-gold-based-immunochromatographic-assay-for-the-rapid-detection-of-edwardsiella-ictaluri
#2
Ruijun Li, Xianyu Zhang, Chuan Yang, Shigen Ye, Hua Li, Qiang Li
Edwardsiella Ictaluri is known as the etiological agent of enteric septicaemia of channel catfish, causing heavy economic losses in the aquaculture industry. In this study, a colloidal gold-based immunochromatography assay (GICA) was developed for rapid detection of E. ictaluri. Briefly, monoclonal antibody (MAbs) and polyclonal antibody (PAbs) against E. ictaluri were prepared. Sensitivity of MAbs and PAbs to E. ictaluri was analyzed by Dot ELISA. Mouse MAb5D11 against E. ictaluri was conjugated with the 20 nm colloidal gold particles as the detector...
June 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29383151/high-protein-and-mrna-expression-levels-of-tubb3-class-iii-%C3%A3-tubulin-are-associated-with-aggressive-tumor-features-in-esophageal-adenocarcinomas
#3
Heike Loeser, Simon Schallenberg, Moritz von Winterfeld, Lars Tharun, Hakan Alakus, Arnulf Hölscher, Elfriede Bollschweiler, Reinhard Buettner, Thomas Zander, Alexander Quaas
Background: Esophageal adenocarcinomas show an increasing incidence in the Western world and their overall survival remains low. Microtubules are multifunctional cytoskeletal proteins involved in crucial cellular roles, including maintenance of cell shape, intracellular transport, meiosis, and mitosis. Microtubulus-TUBB3 was found overexpressed in several carcinomas suggesting a significant role in cancer development. High levels of TUBB3 expression were also described to be associated with poor clinical outcome in various cancers...
December 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29378261/improving-the-quality-of-a-recombinant-rabbit-monoclonal-antibody-against-plxdc2-by-optimizing-transient-expression-conditions-and-purification-method
#4
Hisayo Shimizu, Masataka Nakagawa, Nemuri Todaka, Keitaro Imaizumi, Yasunori Kurosawa, Toshiaki Maruyama, C J Okumura, Takashi Shibata, Yosuke Tanaka, Yoshinori Sato, Yasuo Ono, Teruo Akuta
Rabbit monoclonal antibodies (mAbs) have many advantages over mouse antibodies in biological research and diagnostics applications because they exhibit high affinity and specificity. However, the methods of recombinant rabbit mAb production have not been optimized to the same extent as techniques used to produce mouse and human mAbs. In this study, we sought to optimize the production of a recombinant rabbit mAb against human plexin domain containing protein 2 (PLXDC2), a known cell surface antigen, by culturing HEK293-6E cells transfected with antibody-encoding genes at two different temperatures and by purifying the end-product by three different chromatography methods...
January 26, 2018: Protein Expression and Purification
https://www.readbyqxmd.com/read/29343576/increased-epitope-complexity-correlated-with-antibody-affinity-maturation-and-a-novel-binding-mode-revealed-by-structures-of-rabbit-antibodies-against-the-third-variable-loop-v3-of-hiv-1-gp120
#5
Ruimin Pan, Yali Qin, Marisa Banasik, William Lees, Adrian J Shepherd, Michael W Cho, Xiang-Peng Kong
The V3 loop of HIV-1 gp120 is an immunodominant region targeted by neutralizing antibodies (nAbs). Despite limited breadth, better characterization of the structural details of the interactions between these nAbs and their target epitopes would enhance our understanding of the mechanism of neutralization and facilitate designing better immunogens to induce nAbs with greater breadth. Recently, we isolated two anti-V3 neutralizing monoclonal antibodies (mAbs), 10A3 and 10A37, from a rabbit immunized with gp120 of the M group consensus sequence...
January 17, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29338152/generation-and-characterization-of-siglec-f-specific-monoclonal-antibodies
#6
Sima Shahmohammadi-Farid, Roya Ghods, Mahmood Jeddi-Tehrani, Ali-Ahmad Bayat, Nazanin Mojtabavi, Alireza Razavi, Amir-Hassan Zarnani
Siglec-F (SF) is a surface glycoprotein expressed by mouse eosinophils and induces caspase- and mitochondria-dependent apoptosis after engagement with its cognate ligand or specific antibodies. This targeting eosinophils by monoclonal antibodies may help diverse diseases associated with increased frequency of eosinophils including allergy and asthma. In this paper, production of murine and rat monoclonal antibodies (mAbs) against Siglec-F has been addressed. Balb/c mice were immunized with siglec-F1 (SF1) and siglec-F2 (SF2) synthetic peptides conjugated to a carrier protein...
December 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29324051/anti-il-8-antibody-potentiates-the-effect-of-exogenous-surfactant-in-respiratory-failure-caused-by-meconium-aspiration
#7
Pavol Mikolka, Jana Kopincova, Petra Kosutova, Maros Kolomaznik, Andrea Calkovska, Daniela Mokra
AIM: Meconium aspiration syndrome (MAS) is life-threatening respiratory failure of newborns which can be treated by exogenous surfactant. In response to meconium, increased levels of chemokine IL-8 (CXCL8) stimulate massive neutrophil infiltration of the lungs. Local accumulation and activation of neutrophils, on-going inflammation, lung edema, and oxidative damage contribute to inactivation of endogenous and therapeutically given surfactants. Therefore, we have hypothesized that addition of monoclonal anti-IL-8 antibody into exogenous surfactant can mitigate the neutrophil-induced local injury and the secondary surfactant inactivation and may finally result in improvement of respiratory functions...
January 11, 2018: Experimental Lung Research
https://www.readbyqxmd.com/read/29207829/evaluation-of-tumour-associated-macrophages-and-angiogenesis-in-ameloblastoma
#8
Akinyele O Adisa, Samuel E Udeabor, Anna Orlowska, Robert A Sader, Shahram Ghanaati
Introduction: Ameloblastoma is a locally invasive odontogenic neoplasm that has a high recurrence rate. The invasion of adjacent tissue is supported by angiogenesis stimulated by Tumour-Associated Macrophages (TAMs). TAMs are macrophages modified in the milieu of the tumour microenvironment and have very weak or no ability to present antigens. Thus, there is collaboration between the tumour and the tumour microenvironment to maintain tumour enlargement. TAMs exist as the classically activated M1 macrophages that possess antitumour activity and the otherwise activated M2 macrophages that support tumour invasion and metastasis...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29205549/identification-and-characterization-of-antibodies-elicited-by-human-cystatin-c-fragment
#9
Izabela Behrendt, Martyna Prądzińska, Marta Spodzieja, Paulina Czaplewska, Aleksandra S Kołodziejczyk, Aneta Szymańska, Franciszek Kasprzykowski, Susanna L Lundström, Roman A Zubarev, Sylwia Rodziewicz-Motowidło
Amyloid formation is associated with a number of neurodegenerative diseases that affect the independence and quality of life of aging populations. One of rather atypical, occurring at a young age amyloidosis is hereditary cystatin C amyloid angiopathy (HCCAA) related to aggregation of L68Q variant of human cystatin C (hCC). Human cystatin C plays a very important role in many aspects of human health; however, its amyloidogenic properties manifested in HCCAA present a real, lethal threat to some populations and any work on factors that can affect possible influencing hCC aggregation is not to overestimate...
December 5, 2017: Journal of Molecular Recognition: JMR
https://www.readbyqxmd.com/read/29199679/a-comparative-analysis-of-immunohistochemistry-and-fluorescent-in-situ-hybridization-assay-to-detect-anaplastic-lymphoma-kinase-status-in-lung-adenocarcinoma-cases-a-search-for-a-testing-algorithm
#10
P B Wagle, N A Jambhekar, R Kumar, K Prabhash, C S Pramesh, S B Desai, V Noronha, G Karimundackal, A Shah, A Joshi, S G Laskar, S Jiwnani, T Pai, J P Agarwal
INTRODUCTION: Testing for echinoderm microtubule-associated protein-like 4 (EML4) anaplastic lymphoma kinase (ALK) translocation by fluorescence in situ hybridization (FISH) is well established whereas the Food and Drug Administration (FDA) ALK immunohistochemical (IHC) test is relatively new. AIMS AND OBJECTIVE: The aim of this study is to compare FDA-approved ALK IHC test (D5F3 clone) with the standard ALK FISH test. MATERIALS AND METHODS: A validation and a test arm with 100 and 200 cases of Formalin-Fixed, Paraffin-embedded blocks of lung adenocarcinoma, respectively, comprised the material...
January 2017: Indian Journal of Cancer
https://www.readbyqxmd.com/read/29187883/programmed-cell-death-ligand-1-protein-levels-predicted-survival-of-non-small-cell-lung-cancer
#11
Shaohua Cui, Xinying Su, Lili Dong, Jialin Qian, Lin Ye, Tianwei Zhang, Haihua Fu, Hulin Han, Jiaqi Huang, Yihong Yao, Yi Gu, Liyan Jiang
Objective: To investigate the relationship between programmed death ligand 1 (PD-L1) expression using 5%, 25%, 50% cutoffs in tumor cells (TC) and postsurgical survival in non-small-cell lung cancer (NSCLC) patients. For samples with tumor infiltrating lymphocytes (TIL), correlation between PD-L1 expression in TIL using 1% cutoff and postsurgical survival was also evaluated. Methods: Primary NSCLC tumor surgical samples staging I to IIIA of 126 patients who underwent surgical procedures from September 2009 to August 2012 in Shanghai Chest Hospital, Shanghai Jiao Tong University were retrospectively included...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29187698/evaluation-of-schistosoma-japonicum-thioredoxin-peroxidase-1-as-a-potential-circulating-antigen-target-for-the-diagnosis-of-asian-schistosomiasis
#12
Adrian Miki C Macalanda, Jose Ma M Angeles, Kharleezelle J Moendeg, Anh Tm Dang, Luna Higuchi, Noboru Inoue, Xuenan Xuan, Masashi Kirinoki, Yuichi Chigusa, Lydia R Leonardo, Elena A Villacorte, Pilarita T Rivera, Yasuyuki Goto, Shin-Ichiro Kawazu
Asian schistosomiasis caused by Schistosoma japonicum is a serious zoonotic disease endemic in China, the Philippines and parts of Indonesia. Mass drug administration in endemic areas resulted to decline in disease severity and intensity. The low intensity of infection limits the use of current parasitological methods for schistosomiasis diagnosis. Detection of parasite circulating antigens might provide more informative result as it may indicate the true status of infection. In this study, S. japonicum thioredoxin peroxidase-1 (SjTPx-1) a 22 kDa secreted antioxidant enzyme expressed throughout the life stages of the parasite was evaluated for its potential use as a biomarker for schistosomiasis japonica infection...
November 28, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29162919/production-of-recombinant-human-procollagen-type-i-c-terminal-propeptide-and-establishment-of-a-sandwich-elisa-for-quantification
#13
Woo-Young Seo, Jeong-Ho Kim, Du-San Baek, Su-Jung Kim, Sujin Kang, Won Suk Yang, Ji-Ae Song, Moo-Seung Lee, Sunghoon Kim, Yong-Sung Kim
Procollagen type I carboxy-terminal propeptide (PICP), derived from type I procollagen, has been identified as an indicator of type I collagen synthesis in bone matrix formation and skin recovery. PICP is a heterotrimeric glycoprotein consisting of two α1 chains (PICPα1) and one α2 chain (PICPα2). Here, we report the recombinant expression of human PICP using a mammalian expression system. Co-expression of PICPα1 and PICPα2 in HEK293F cells resulted in the production of functional PICP in the correctly assembled heterotrimeric form...
November 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29151654/development-and-evaluation-of-simple-dot-blot-assays-for-rapid-detection-of-staphylococcal-enterotoxin-a-in-food
#14
Mamta Singh, Ravi Kant Agrawal, Bhoj Raj Singh, Sanjod Kumar Mendiratta, Rajesh Kumar Agarwal, Mithilesh Kumar Singh, Deepak Kumar
The present study was aimed to develop and evaluate dot-blot assays for rapid detection of staphylococcal enterotoxin-A (SEA) in food. Dot blots were developed in two formats, indirect and sandwich utilizing mouse monoclonal anti-SEA and rabbit polyclonal anti-SEA antibodies. In indirect dot-blot format, recombinant SEA was directly coated on NCM dot-blot strip and detection was carried out by anti-SEA antibodies. In sandwich dot-blot format, SEA was trapped between anti-SEA capture and detection antibodies...
December 2017: Indian Journal of Microbiology
https://www.readbyqxmd.com/read/29135332/antibodies-to-pcpa-and-phtd-protect-mice-against-streptococcus-pneumoniae-by-a-macrophage-and-complement-dependent-mechanism
#15
Lucian Visan, Nicolas Rouleau, Emilie Proust, Loïc Peyrot, Arnaud Donadieu, Martina Ochs
Currently marketed Streptococcus pneumoniae (Spn) vaccines, which contain polysaccharide capsular antigens from the most common Spn serotypes, have substantially reduced pneumococcal disease rates but have limited coverage. A trivalent pneumococcal protein vaccine containing pneumococcal choline-binding protein A (PcpA), pneumococcal histidine triad protein D (PhtD), and detoxified pneumolysin is being developed to provide broader, cross-serotype protection. Antibodies against detoxified pneumolysin protect against bacterial pneumonia by neutralizing Spn-produced pneumolysin, but how anti-PhtD and anti-PcpA antibodies protect against Spn has not been established...
November 14, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29133571/development-of-protective-immunity-in-new-zealand-white-rabbits-challenged-with-bacillus-anthracis-spores-and-treated-with-antibiotics-and-obiltoxaximab-a-monoclonal-antibody-against-protective-antigen
#16
Lisa N Henning, Sarah Carpenter, Gregory V Stark, Natalya V Serbina
Recommended management of inhalational anthrax, a high-priority bioterrorist threat, includes antibiotics and antitoxins. Obiltoxaximab, a chimeric monoclonal antibody against anthrax Protective Antigen (PA) is licensed under the U.S. Food and Drug Administration's (FDA's) Animal Rule for treatment of inhalational anthrax. Because of spore latency, disease re-emergence after treatment cessation is a concern and there is a need to understand development of endogenous protective immune responses following antitoxin-containing anthrax treatment regimens...
November 13, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29127256/development-of-phospho-specific-rab-protein-antibodies-to-monitor-in-vivo-activity-of-the-lrrk2-parkinson-s-disease-kinase
#17
Pawel Lis, Sophie Burel, Martin Steger, Matthias Mann, Fiona Brown, Federico Diez, Francesca Tonelli, Janice L Holton, Philip Winglok Ho, Shu-Leong Ho, Meng-Yun Chou, Nicole K Polinski, Terina N Martinez, Paul Davies, Dario R Alessi
Mutations that activate the LRRK2 protein kinase, predispose to Parkinson's disease, suggesting that LRRK2 inhibitors might have therapeutic benefit. Recent work has revealed that LRRK2 phosphorylates a subgroup of 14 Rab proteins, including Rab10, at a specific residue located at the centre of its effector binding Switch-II motif. In this study, we analyse the selectivity and sensitivity of polyclonal and monoclonal phospho-specific antibodies raised against 9 different LRRK2 phosphorylated Rab proteins (Rab3A/3B/3C/3D, Rab5A/5B/5C, Rab8A/8B, Rab10, Rab12, Rab29[T71], Rab29[S72], Rab35 and Rab43)...
November 10, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/29116503/construction-of-rabbit-immune-antibody-libraries
#18
Thi Thu Ha Nguyen, Jong Seo Lee, Hyunbo Shim
Rabbits have distinct advantages over mice as a source of target-specific antibodies. They produce higher affinity antibodies than mice, and may elicit strong immune response against antigens or epitopes that are poorly immunogenic or tolerated in mice. However, a great majority of currently available monoclonal antibodies are of murine origin because of the wider availability of murine fusion partner cell lines and well-established tools and protocols for fusion and cloning of mouse hybridoma. Phage-display selection of antibody libraries is an alternative method to hybridoma technology for the generation of target-specific monoclonal antibodies...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29115701/multispecificity-of-a-recombinant-anti-ras-monoclonal-antibody
#19
John W Schrader, Gary R McLean
Recombinant monoclonal antibodies (Ab's) have widespread application as research tools, diagnostic reagents and as biotherapeutics. Whilst studying the cellular molecular switch protein m-ras, a recombinant monoclonal antibody to m-ras was generated for use as a research tool. Antibody genes from a single rabbit B cell secreting IgG to an m-ras specific peptide sequence were expressed in mammalian cells, and monoclonal rabbit IgG binding was characterized by ELISA and peptide array blotting. Although the monoclonal Ab was selected for specificity to m-ras peptide, it also bound to both recombinant full-length m-ras and h-ras proteins...
November 8, 2017: Journal of Molecular Recognition: JMR
https://www.readbyqxmd.com/read/29115505/alanine-scanning-mutagenesis-of-sp70-epitope-in-characterizing-species%C3%A2-specific-antibodies-induced-by-enterovirus-71%C3%A2-based-antigens
#20
Meng Gao, Feng Zhang, Yun Zhu, Limei Gao, Yunshui Jiang, Yongneng Luo, Fangchang Zhuang, Zian Mao, Jiangsen Mao
The enterovirus 71 (EV71) SP70 epitope, derived from amino acids 208‑222 of VP1, is a neutralizing epitope. The present study aimed to assess the inter‑species differences of the antibodies induced by EV71‑based antigens in responses to SP70 mutant peptides. BALB/c mice and Lou/C rats were immunized with EV71 SP70. Monoclonal antibodies (Mabs) were produced by hybridoma clones. Serum polyclonal antibodies (Pabs) were produced from BALB/c mice and New Zealand white rabbits immunized with recombinant EV71 VP1 (rEV71‑VP1) protein or inactivated EV71...
November 6, 2017: Molecular Medicine Reports
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