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https://www.readbyqxmd.com/read/28182792/somatostatin-receptor-staining-in-ffpe-sections-using-a-ligand-derivative-dye-as-an-alternative-to-immunostaining
#1
Koki Hasegawa, Shinji Kudoh, Takaaki Ito
The confirmation of target expression in tissues is a prerequisite for molecular-targeted therapy. However, difficulties are sometimes associated with the production of appropriate antibodies against receptors. We herein developed a ligand derivative dye for the staining of receptors. The somatostatin receptor (sstr) was selected as the target and FITC-octreotate as the detective agent. We performed a blot analysis to detect sstr in the transfer membrane. The sstr2 recombinant protein or cell lysate from a small cell lung carcinoma cell line (H69) was boiled and loaded onto SDS-PAGE, and the proteins were transferred to a membrane...
2017: PloS One
https://www.readbyqxmd.com/read/28173785/hcv-screening-in-a-cohort-of-hiv-infected-and-uninfected-homeless-and-marginally-housed-women-in-san-francisco-california
#2
Kimberly Page, Michelle Yu, Jennifer Cohen, Jennifer Evans, Martha Shumway, Elise D Riley
BACKGROUND: Hepatitis C virus (HCV) screening has taken on new importance as a result of updated guidelines and new curative therapies. Relatively few studies have assessed HCV infection in homeless populations, and a minority include women. We assessed prevalence and correlates of HCV exposure in a cohort of homeless and unstably housed women in San Francisco, and estimated the proportion undiagnosed. METHODS: A probability sample of 246 women were recruited at free meal programs, homeless shelters, and low-cost single room occupancy hotels in San Francisco; women with HIV were oversampled...
February 7, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28164808/emerging-food-allergens-identification-of-polyphenol-oxidase-as-an-important-allergen-in-eggplant-solanum-melongena-l
#3
Bheemanapalli N Harish Babu, Anthony Wilfred, Yeldur P Venkatesh
Although many allergens have been detected in eggplant (Solanum melongena L.), their identity have not been elucidated. The aim of this study was to investigate whether polyphenol oxidase (PPO), an important eggplant enzyme, acts as an allergen. The proteins of eggplant peel extract were separated on phenyl-Sepharose (PS), and analyzed by skin prick test (SPT), ELISA and IgE-immunoblotting; the components were analyzed for PPO activity, presence of protein-bound copper, and recognition by rabbit polyclonal anti-sweet potato PPO antiserum...
February 2017: Immunobiology
https://www.readbyqxmd.com/read/28164534/expression-of-hcv-alternative-reading-frame-protein-core-1-f-in-baculovirus-expression-system-and-its-evaluation-for-assessment-of-specific-anti-core-1-antibody-in-iranian-hcv-infected-patients
#4
Pooneh Rahimi, Rouhollah Vahabpour, Farideh Sadat Sajadian Fard, Fatemeh Motevalli, Fatemeh Fotouhi Chahouki, Mohammad Reza Aghasadeghi, Azam Bolhassani, Seyed Mehdi Sadat, Ehsan Mostafavi, Nasir Mohajel, Ali Jahanian-Najafabadi, Mohammad Reza Amiran
BACKGROUND: Hepatitis C virus (HCV) genome contains an overlapping reading frame which results in alternative core protein (ARFP). Baculovirus expression system was used as a powerful eukaryotic vector system to express core+1/F protein for the first time. This recombinant core+1/F protein was used to assess the anti-core+1 antibody in anti-HCV drug resistant and sustained virologic response (SVR) patients. METHODS: The core+1 coding sequence from HCV genotype 1 was designed and synthesized in pUC57 vector...
October 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28163123/isolation-and-characterization-of-a-novel-metalloprotease-inhibitor-from-bothrops-alternatus-snake-serum
#5
Tatiana Z Palacio, Norival A Santos-Filho, José Cesar Rosa, Rui S Ferreira, Benedito Barraviera, Suely V Sampaio
Resistance of snakes and some other animals to snake envenomation has been attributed to soluble factors present in their tissues. Here we report the isolation of a novel metalloprotease inhibitor from Bothrops alternatus snake serum (named BaltMPI) with high purity, using a four-step chromatographic method. BaltMPI has molecular weights of 60.5 and 42.4kDa, as determined by SDS-PAGE and mass spectrometry, respectively, and pI=5.27. The first 60 amino acids from the N-terminal region of BaltMPI, determined by Edman's degradation, showed high homology (97%) with the snake venom metalloprotease inhibitor (SVMPI) BJ46a and other SVMPIs (78-82%)...
February 3, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28129116/a-proof-of-concept-for-epigenetic-therapy-of-tissue-fibrosis-inhibition-of-liver-fibrosis-progression-by-3-deazaneplanocin-a
#6
Müjdat Zeybel, Saimir Luli, Laura Sabater, Timothy Hardy, Fiona Oakley, Jack Leslie, Agata Page, Eva Moran Salvador, Victoria Sharkey, Hidekazu Tsukamoto, David C K Chu, Uma Sharan Singh, Mirco Ponzoni, Patrizia Perri, Daniela Di Paolo, Edgar J Mendivil, Jelena Mann, Derek A Mann
The progression of fibrosis in chronic liver disease is dependent upon hepatic stellate cells (HSCs) transdifferentiating to a myofibroblast-like phenotype. This pivotal process is controlled by enzymes that regulate histone methylation and chromatin structure, which may be targets for developing anti-fibrotics. There is limited pre-clinical experimental support for the potential to therapeutically manipulate epigenetic regulators in fibrosis. In order to learn if epigenetic treatment can halt the progression of pre-established liver fibrosis, we treated mice with the histone methyltransferase inhibitor 3-deazaneplanocin A (DZNep) in a naked form or by selectively targeting HSC-derived myofibroblasts via an antibody-liposome-DZNep targeting vehicle...
January 4, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28101473/purification-and-characterization-of-bovine-serum-albumin-using-chromatographic-method
#7
Sanaz Balkani, Sara Shamekhi, Ramin Raoufinia, Reza Parvan, Jalal Abdolalizadeh
Purpose: Albumin is an abundant protein of blood and has many biopharmaceutical applications. The aim of this study was to purify bovine serum albumin (BSA) using produced rabbit anti-BSA antibody. Methods: The polyclonal antibody was produced against the BSA in rabbits. Then, the pure BSA was injected to three white New Zealand rabbits. ELISA test was done to evaluate antibody production. After antibody purification,the purified antibody was attached to CNBr-activated sepharose and finally it was used for purification of albumin from bovine serum...
December 2016: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28101463/development-of-a-novel-human-single-chain-antibody-against-egfrviii-antigen-by-phage-display-technology
#8
Leila Rahbarnia, Safar Farajnia, Hossein Babaei, Jafar Majidi, Bahman Akbari, Shiva Ahdi Khosroshahi
Purpose: EGFRvIII as the most common mutant variant of the epidermal growth factor receptor is resulting from deletion of exons 2-7 in the coding sequence and junction of exons 1 and 8 through a novel glycine residue. EGFRvIII is highly expressed in glioblastoma, carcinoma of the breast, ovary, and lung but not in normal cells. The aim of the present study was identification of a novel single chain antibody against EGFRvIII as a promising target for cancer therapy. Methods: In this study, a synthetic peptide corresponding to EGFRvIII protein was used for screening a naive human scFv phage library...
December 2016: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28090276/overexpression-of-recombinant-human-teriparatide-rhpth-1-34-in-escherichia-coli-an-innovative-gene-fusion-approach
#9
Nahid Bakhtiari, Zahra Amini Bayat, Sepideh Sagharidouz, Mohsen Vaez
BACKGROUND: Parathyroid hormone is an 84-amino acid peptide secreted by the parathyroid glands. Its physiological role is maintenance of normal serum calcium level and bone remodeling. Biological activity of this hormone is related to N-terminal 1-34 amino acids. The recombinant form of hormone (1-34) has been approved for treatment of osteoporosis from 2002. In this study, a novel fusion partner has been developed for preparation of high yield recombinant 1-34 amino acids of hPTH. METHODS: Novel nucleotide cassette designed encoding a chimeric fusion protein comprising of a fusion partner consisting of a His-tag in N-terminal, 53 amino acids belong to Escherichia coli (E...
January 2017: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/28086764/an-audit-of-the-quality-of-online-immunisation-information-available-to-australian-parents
#10
K E Wiley, M Steffens, N Berry, J Leask
BACKGROUND: The Internet is increasingly a source of health information for parents, who use the Internet alongside health care providers for immunisation information. Concerns have been raised about the reliability of online immunisation information, however to date there has been no audit of the quality or quantity of what is available to Australian parents. The objective of this study was to address this gap by simulating a general online search for immunisation information, and assessing the quality and quantity of the web sites returned by the search...
January 13, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28078526/effectiveness-and-safety-of-entecavir-or-tenofovir-in-a-spanish-cohort-of-chronic-hepatitis-b-patients-validation-of-the-page-b-score-to-predict-hepatocellular-carcinoma
#11
Mar Riveiro-Barciela, David Tabernero, José L Calleja, Sabela Lens, María L Manzano, Francisco Gea Rodríguez, Javier Crespo, Belén Piqueras, Juan M Pascasio, Carmen Comas, Maria L Gutierrez, Alberto Aguirre, Emilio Suárez, Javier García-Samaniego, Miguel Rivero, Doroteo Acero, Miguel Fernandez-Bermejo, Diego Moreno, Pilar Sánchez-Pobre, Beatriz de Cuenca, J J Moreno-Palomares, Rafael Esteban, Maria Buti
BACKGROUND: Long-term antiviral therapy has resulted in viral suppression and biochemical response in chronic hepatitis B, although the risk of hepatocellular carcinoma has not been abolished. The Page-B score could be useful to estimate the probability of HCC. AIMS: To analyze the effectiveness and safety of entecavir or tenofovir for more than 4 years and the usefulness of Page-B score in the real-world setting. METHODS: Analysis of Caucasian chronic hepatitis B subjects treated with entecavir or tenofovir from the prospective, multicenter database CIBERHEP...
January 11, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28057179/biomarqueurs-pr%C3%A3-dictifs-de-r%C3%A3-ponse-aux-traitements-bloquant-les-voies-de-costimulation-inhibitrices
#12
REVIEW
Franck Pagès, Clémence Granier, Amos Kirilovsky, Carine Elsissy, Eric Tartour
Immunotherapies targeting co-inhibitory receptors recently open a new promising approach of cancer treatment. Indeed, an objective clinical response was observed after treatment by anti-CTLA-4 and anti-PD-1 in many indications but the treatment still failed in 70 to 80 % of cases treated. Given the adverse effects and the high cost of these therapies, there is a need for the development of biomarkers. This review focus on potential predictive biomarkers. In peripheral blood, high level of Il-2 soluble receptor at baseline and absence of ICOS+ CD4-T lymphocytes induction may be associated with the absence of clinical response for melanoma patients treated by ipilimumab (anti-CTLA-4)...
November 2016: Bulletin du Cancer
https://www.readbyqxmd.com/read/28057176/immunoth%C3%A3-rapie-et-m%C3%A3-lanome-l%C3%A2-exemple-des-anticorps-immunomodulateurs
#13
Cécile Pagès, Barouyr Baroudjian, Celeste Lebbé
Recently, metastatic melanoma has known real therapeutic improvement. Since 2011, 8 drugs have been approved for advanced melanoma such as immunotherapy checkpoint inhibitors. Chemotherapy is no longer used in the first setting of metastatic melanoma treatment. In 2010, the advent of ipilimumab, an anti CTLA 4 inhibitor, changed the scenario and in the following years, many studies confirmed the efficacy of nivolumab and pembrolizumab, two anti PD 1 inhibitors, as a first line treatment. Furthermore, the combination of first-line nivolumab plus ipilimumab might lead to improved outcomes compared with first-line ipilimumab alone in patients with advanced melanoma...
November 2016: Bulletin du Cancer
https://www.readbyqxmd.com/read/28057171/predicting-high-impact-pharmacological-targets-by-integrating-transcriptome-and-text-mining-features
#14
Anatoly Mayburd, Ancha Baranova
PURPOSE: Novel, "outside of the box" approaches are needed for evaluating candidate molecules, especially in oncology. Throughout the years of 2000-2010, the efficiency of drug development fell to barely acceptable levels, and in the second decade of this century, levels have improved only marginally. This dismal condition continues despite unprecedented progress in the development of a variety of high-throughput tools, computational methods, aggregated databases, drug repurposing programs and innovative chemistries...
October 2016: Journal of Pharmacy & Pharmaceutical Sciences: a Publication of the Canadian Society for Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28032814/information-sources-and-knowledge-on-vaccination-in-a-population-from-southern-italy-the-esculapio-project
#15
Garden Tabacchi, Claudio Costantino, Manuela Cracchiolo, Antonio Ferro, Valentina Marchese, Giuseppe Napoli, Sara Palmeri, Daniele Raia, Vincenzo Restivo, Andrea Siddu, Francesco Vitale, Alessandra Casuccio
Vaccine knowledge of the general population is shaped by different information sources and strongly influences vaccination attitudes and uptake. The CCM-Italian Ministry of Health ESCULAPIO project attempted to identify the role of such information sources, in order to address adequate strategies to improve information on vaccines and vaccine preventable diseases. In the present study, data on 632 adults from Southern Italy regarding information sources were collected, and their perceived and actual knowledge on vaccinations were compared and analyzed in relation to socio-demographic characteristics and information sources...
February 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28031124/-preparation-and-application-of-melanoma-associated-antigen-d4-polyclonal-antibody
#16
Shujia He, Yongyao Gu, Shaowen Xiao, Qingmei Zhang, Fang Chen, Bin Luo, Jun Fu, Xiaoxun Xie
Objective To prepare the rabbit polyclonal antibody recognizing human melanoma-associated antigen D4 (MAGE-D4), and identify its immune characteristics for preliminary application. Methods MBP/MAGE-D4 fusion protein was expressed from pMAL-C2/MAGE-D4 recombinant plasmid constructed in the previous work. Then the purified MBP/MAGE-D4 protein was used to immunize the New Zealand white rabbits for generating polyclonal antibody. Subsequently, the anti-MAGE-D4 antibody was purified with protein A affinity chromatograph and identified by SDS-PAGE...
January 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28027883/role-of-the-h-bond-between-l53-and-t56-for-aquaporin-4-epitope-in-neuromyelitis-optica
#17
Francesco Pisani, Laura Simone, Concetta Domenica Gargano, Manuela De Bellis, Antonio Cibelli, Maria Grazia Mola, Giacomo Catacchio, Antonio Frigeri, Maria Svelto, Grazia Paola Nicchia
Aquaporin-4 (AQP4) is the CNS water channel organized into well-ordered protein aggregates called Orthogonal Arrays of Particles (OAPs). Neuromyelitis Optica (NMO) is an autoimmune disease caused by anti-OAP autoantibodies (AQP4-IgG). Molecular Dynamics (MD) simulations have identified an H-bond between L53 and T56 as the key for AQP4 epitope and therefore of potential interest for drug design in NMO field. In the present study, we have experimentally tested this MD-prediction using the classic mutagenesis approach...
December 24, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28013405/production-and-quality-control-assessment-of-a-glp-grade-immunotoxin-d2c7-scdsfv-pe38kdel-for-a-phase-i-ii-clinical-trial
#18
Vidyalakshmi Chandramohan, Charles N Pegram, Hailan Piao, Scott E Szafranski, Chien-Tsun Kuan, Ira H Pastan, Darell D Bigner
D2C7-(scdsFv)-PE38KDEL (D2C7-IT) is a novel recombinant Pseudomonas exotoxin A-based immunotoxin (IT), targeting both wild-type epidermal growth factor receptor (EGFRwt) and mutant EGFR variant III (EGFRvIII) proteins overexpressed in glioblastomas. Initial pre-clinical testing demonstrated the anti-tumor efficacy of D2C7-IT against orthotopic glioblastoma xenograft models expressing EGFRwt, EGFRvIII, or both EGFRwt and EGFRvIII. A good laboratory practice (GLP) manufacturing process was developed to produce sufficient material for a phase I/II clinical trial...
December 24, 2016: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28013084/expression-purification-and-characterization-of-the-authentic-form-of-human-growth-hormone-receptor-antagonist-g120r-hgh-obtained-in-escherichia-coli-periplasmic-space
#19
Ana C S C Menezes, Miriam F Suzuki, João E Oliveira, Maria T C P Ribela, Isadora C Furigo, José Donato, Paolo Bartolini, Carlos R J Soares
The human growth hormone receptor antagonist G120R-hGH precludes dimerization of GH and prolactin receptors and consequently JAK/STAT signaling. Some modifications in this antagonist resulted in a drug specific for the GH receptor, called Pegvisomant (Somavert(®)). However, the original G120R-hGH is usually synthesized in bacterial cytoplasm as inclusion bodies, not being a commercial product. The present work describes the synthesis and characterization of G120R-hGH secreted into bacterial periplasm and obtained with a vector based on a constitutive lambda-PL promoter...
December 22, 2016: Protein Expression and Purification
https://www.readbyqxmd.com/read/27999187/targeting-the-pro-angiogenic-forms-of-vegf-or-inhibiting-their-expression-as-anti-cancer-strategies
#20
Mélanie Guyot, Caroline Hilmi, Damien Ambrosetti, Marco Merlano, Cristiana Lo Nigro, Jérôme Durivault, Renaud Grépin, Gilles Pagès
Tumor growth relies on oxygen and blood supply depending on neo-vascularization. This process is mediated by the Vascular Endothelial Growth Factor (VEGF) in many tumors. This paradigm has led to the development of specific therapeutic approaches targeting VEGF or its receptors. Despite their promising effects, these strategies have not improved overall survival of patients suffering from different cancers compared to standard therapies. We hypothesized that the existence of anti-angiogenic forms of VEGF VEGFxxxb which are still present in many tumors limit the therapeutic effects of the anti-VEGF antibodies bevacizumab/Avastin (BVZ)...
February 7, 2017: Oncotarget
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