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https://www.readbyqxmd.com/read/28212372/molecular-biology-of-gastroesophageal-cancers-opportunities-and-challenges
#1
Shaheer Khan, Sameh Mikhail, Joanne Xiu, Mohamed E Salem
Gastroesophageal (GE) malignancies make up a significant and growing segment of newly diagnosed cancers. Approximately 80% of patients who have GE cancers die within 5 years of diagnosis, which means that effective treatments for these malignancies need to be found. Currently, targeted therapies have a minimal role in this disease group. Intensive study of the molecular biology of GE cancers is a relatively new and ongoing venture, but it has already led to a significant increase in our understanding of these malignancies...
January 2017: Clinical Advances in Hematology & Oncology: H&O
https://www.readbyqxmd.com/read/28212293/targeting-angiogenesis-in-biliary-tract-cancers-an-open-option
#2
REVIEW
Valeria Simone, Oronzo Brunetti, Luigi Lupo, Mario Testini, Eugenio Maiorano, Michele Simone, Vito Longo, Christian Rolfo, Marc Peeters, Aldo Scarpa, Amalia Azzariti, Antonio Russo, Domenico Ribatti, Nicola Silvestris
Biliary tract cancers (BTCs) are characterized by a bad prognosis and the armamentarium of drugs for their treatment is very poor. Although the inflammatory status of biliary tract represents the first step in the cancerogenesis, the microenvironment also plays a key role in the pathogenesis of BTCs, promoting tumor angiogenesis, invasion and metastasis. Several molecules, such as vascular endothelial growth factor (VEGF) and fibroblast growth factor (FGF), are involved in the angiogenesis process and their expression on tumor samples has been explored as prognostic marker in both cholangiocarcinoma and gallbladder cancer...
February 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28212060/pembrolizumab-as-second-line-therapy-for-advanced-urothelial-carcinoma
#3
Joaquim Bellmunt, Ronald de Wit, David J Vaughn, Yves Fradet, Jae-Lyun Lee, Lawrence Fong, Nicholas J Vogelzang, Miguel A Climent, Daniel P Petrylak, Toni K Choueiri, Andrea Necchi, Winald Gerritsen, Howard Gurney, David I Quinn, Stéphane Culine, Cora N Sternberg, Yabing Mai, Christian H Poehlein, Rodolfo F Perini, Dean F Bajorin
Background Patients with advanced urothelial carcinoma that progresses after platinum-based chemotherapy have a poor prognosis and limited treatment options. Methods In this open-label, international, phase 3 trial, we randomly assigned 542 patients with advanced urothelial cancer that recurred or progressed after platinum-based chemotherapy to receive pembrolizumab (a highly selective, humanized monoclonal IgG4κ isotype antibody against programmed death 1 [PD-1]) at a dose of 200 mg every 3 weeks or the investigator's choice of chemotherapy with paclitaxel, docetaxel, or vinflunine...
February 17, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28211938/establishment-and-validation-of-a-microfluidic-capillary-gel-electrophoresis-platform-method-for-purity-analysis-of-therapeutic-monoclonal-antibodies
#4
Michael T Smith, Shu Zhang, Troy Adams, Byron DiPaolo, Jennifer Dally
Capillary and microfluidic chip electrophoresis technologies are heavily utilized for development, characterization, release, and stability testing of biopharmaceuticals. Within the biopharmaceutical industry, CE-SDS and M-CGE are commonly used for purity determination by separation and quantitation of size-based variants. M-CGE is used primarily as a R&D tool for product and process development, while cGMP release and stability testing applications are commonly reserved for CE-SDS. This paper describes the establishment of a M-CGE platform method to be used for R&D and cGMP applications, including release and stability testing, for monoclonal antibodies...
February 17, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28211808/human-monoclonal-antibodies-in-the-clinic-novel-insights-into-the-choice-of-specific-targets
#5
Michael Steinitz
No abstract text is available yet for this article.
February 3, 2017: Human Antibodies
https://www.readbyqxmd.com/read/28211299/comparison-of-biodistribution-profile-of-monoclonal-antibodies-nanoparticles-and-aptamers-in-rats-with-breast-cancer
#6
Cristal Cerqueira-Coutinho, Sotiris Missailidis, Jéssica Alessandra-Perini, Daniel Escorsim Machado, Jamila Alessandra Perini, Ralph Santos-Oliveira
The use of monoclonal antibodies and aptamers is growing every single day, as the use of nanoparticle systems. Although most of the products are under investigation, there are a few commercialized products available at the market, for human consume. In this study, we have compared three formulations (aptamer anti-MUC1, monoclonal antibody - Trastuzumab and monoclonal antibodies nanoparticles - PLA/PVA/MMT trastuzumab) to identify their profile as also to understand their behavior into an alive biological system...
May 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28211277/antineoplastic-agents-603-quinstatins-exceptional-cancer-cell-growth-inhibitors
#7
George R Pettit, Noeleen Melody, Jean-Charles Chapuis
Discovery of the exceptionally powerful anticancer drug dolastatin 10 (1), contained in the sea hare Dolabella auricularia, opened a new frontier needed for improving human cancer treatment. Subsequently, major advances have been achieved based on results of structurally modifying this unusual natural peptide while maintaining the remarkable anticancer activity necessary for preparation of successful monoclonal antibody drug conjugates (ADC). Among the first several hundred SAR products based on dolastatin 10 our group synthesized and termed auristatins was auristatin E (2a)...
February 17, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28211081/h3f3a-mutation-in-giant-cell-tumour-of-the-bone-is-detected-by-immunohistochemistry-using-a-monoclonal-antibody-against-the-g34w-mutated-site-of-the-histone-h3-3-variant
#8
Julian Lüke, Alexandra von Baer, Jordan Schreiber, Christoph Lübbehüsen, Thomas Breining, Kevin Mellert, Ralf Marienfeld, Markus Schultheiss, Peter Möller, Thomas Fe Barth
AIMS: Giant cell tumour of bone (GCTB) is a neoplasm predominantly of long bones characterised by the H3F3A mutation G34W. Conventional diagnostic is challenged by the tumour's giant cell-rich morphology, which overlaps with other giant cell containing lesions of the bone. Recently, a monoclonal antibody specific for the H3F3A mutation has been generated. Our aim was to test this antibody on a cohort of giant cell containing lesions. METHODS AND RESULTS: We used the antibody for analysis of 22 H3F3A-mutated GCTB, including two patients with recurrences; for comparison we analysed a cohort of 36 H3F3A-wild-type giant cell-rich lesions of the bone and soft tissue, containing one brown tumour, six aneurysmal bone cysts, six chondroblastomas, five non-ossifying-fibromas, two fibrous dysplasias, nine tenosynovial giant cell tumours, one giant cell-rich sarcoma and six osteosarcomas...
February 17, 2017: Histopathology
https://www.readbyqxmd.com/read/28211007/daclizumab-a-review-in-relapsing-multiple-sclerosis
#9
Matt Shirley
Daclizumab (Zinbryta(®); previously known as daclizumab high-yield process) is a therapeutic monoclonal antibody that has recently been approved for the treatment of relapsing forms of multiple sclerosis (MS) in adults. Daclizumab is a humanized IgG1 monoclonal antibody directed against CD25, the alpha subunit of the high-affinity interleukin-2 receptor. As demonstrated in the phase III DECIDE trial, once-monthly subcutaneous daclizumab was superior to once-weekly intramuscular interferon (IFN) β-1a in reducing the clinical relapse rate and radiological measures of disease in patients with relapsing-remitting MS...
February 17, 2017: Drugs
https://www.readbyqxmd.com/read/28210263/a-paradigm-shift-on-the-question-of-b-cells-in-transplantation-recent-insights-on-regulating-the-alloresponse
#10
REVIEW
Daniel J Firl, Gilles Benichou, James I Kim, Heidi Yeh
B lymphocytes contribute to acute and chronic allograft rejection through their production of donor-specific antibodies (DSAs). In addition, B cells present allopeptides bound to self-MHC class II molecules and provide costimulation signals to T cells, which are essential to their activation and differentiation into memory T cells. On the other hand, both in laboratory rodents and patients, the concept of effector T cell regulation by B cells is gaining traction in the field of transplantation. Specifically, clinical trials using anti-CD20 monoclonal antibodies to deplete B cells and reverse DSA had a deleterious effect on rates of acute cellular rejection; a peculiar finding that calls into question a central paradigm in transplantation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28210004/monoclonal-antibody-therapy-in-multiple-myeloma
#11
REVIEW
Cyrille Touzeau, Philippe Moreau, Charles Dumontet
The therapeutic landscape of multiple myeloma (MM) has evolved spectacularly over the past decade with the discovery and validation of proteasome inhibitors and immunomodulatory agents as highly active agents, both in front-line therapy as well as in the relapse and maintenance settings. While previous attempts to apply available monoclonal antibodies (Mabs) to the treatment of patients with MM has until recently been disappointing, novel targets specifically explored in the context of MM have recently lead to the first approvals of Mabs for the treatment of patients with MM...
February 17, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28209985/ig-like-domain-6-of-vcam-1-is-a-potential-therapeutic-target-in-tnf%C3%AE-induced-angiogenesis
#12
Taek-Keun Kim, Chang Sik Park, Hee-Jun Na, Kangseung Lee, Aerin Yoon, Junho Chung, Sukmook Lee
Tumor necrosis factor alpha (TNFα)-induced angiogenesis plays important roles in the progression of various diseases, including cancer, wet age-related macular degeneration, and rheumatoid arthritis. However, the relevance and role of vascular cell adhesion molecule-1 (VCAM-1) in angiogenesis have not yet been clearly elucidated. In this study, VCAM-1 knockdown shows VCAM-1 involvement in TNFα-induced angiogenesis. Through competitive blocking experiments with VCAM-1 Ig-like domain 6 (VCAM-1-D6) protein, we identified VCAM-1-D6 as a key domain regulating TNFα-induced vascular tube formation...
February 17, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28209962/characterization-of-celiac-disease-related-oat-proteins-bases-for-the-development-of-high-quality-oat-varieties-suitable-for-celiac-patients
#13
María J Giménez, Ana Real, M Dolores García-Molina, Carolina Sousa, Francisco Barro
Some studies have suggested that the immunogenicity of oats depends on the cultivar. RP-HPLC has been proposed as a useful technique to select varieties of oats with reduced immunogenicity. The aim of this study was to identify both the avenin protein patterns associated with low gluten content and the available variability for the development of new non-toxic oat cultivars. The peaks of alcohol-soluble avenins of a collection of landraces and cultivars of oats have been characterized based on the RP-HPLC elution times...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28209777/cd6-as-a-potential-target-for-treating-multiple-sclerosis
#14
Yan Li, Nora G Singer, Joy Whitbred, Michael A Bowen, David A Fox, Feng Lin
CD6 was established as a marker of T cells more than three decades ago, and recent studies have identified CD6 as a risk gene for multiple sclerosis (MS), a disease in which autoreactive T cells are integrally involved. Nevertheless, the precise role of CD6 in regulating T-cell responses is controversial and its significance in the pathogenesis of various diseases remains elusive, partly due to the lack of animals engineered to alter expression of the CD6 gene. In this report, we found that CD6 KO mice showed decreased pathogenic T-cell responses, reduced spinal cord T-cell infiltration, and attenuated disease severity in experimental autoimmune encephalomyelitis (EAE), an animal model of MS...
February 16, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28209555/detection-of-soluble-erbb2-in-breast-cancer-cell-lysates-using-a-combined-label-free-fluorescence-platform-based-on-bloch-surface-waves
#15
Alberto Sinibaldi, Camilla Sampaoli, Norbert Danz, Peter Munzert, Leonardo Sibilio, Frank Sonntag, Agostino Occhicone, Elisabetta Falvo, Elisa Tremante, Patrizio Giacomini, Francesco Michelotti
We report on the use of one-dimensional photonic crystals to detect clinically relevant concentrations of ERBB2/neu/Her2 in cell lysates. ERBB2 is a pivotal breast cancer biomarker and targetable oncogenic driver associated with aggressive breast cancer subtypes. To quantitate soluble ERBB2, we developed an optical platform that combines label-free and fluorescence detection modes. Such platform makes use of a sandwich assay in which the one-dimensional photonic crystals sustaining Bloch surface waves are tailored with a monoclonal antibody for highly specific biological recognition (BSW biochip)...
February 9, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28209483/a-new-size-based-platform-for-circulating-tumor-cell-detection-in-colorectal-cancer-patients
#16
Bo Young Oh, Jhingook Kim, Woo Yong Lee, Hee Cheol Kim
BACKGROUND: Circulating tumor cells (CTCs) might play a significant role in cancer progression and metastasis. However, the ability to detect CTCs is limited, especially in cells undergoing epithelial-mesenchymal transition. In this study, we evaluated a new size-based CTC detection platform and its clinical efficacy in colorectal cancer. PATIENTS AND METHODS: Blood samples were obtained from 76 patients with colorectal cancer and 20 healthy control subjects for CTC analysis...
January 25, 2017: Clinical Colorectal Cancer
https://www.readbyqxmd.com/read/28208831/resveratrol-and-grape-extract-loaded-solid-lipid-nanoparticles-for-the-treatment-of-alzheimer-s-disease
#17
Joana A Loureiro, Stephanie Andrade, Ana Duarte, Ana Rute Neves, Joana Fontes Queiroz, Cláudia Nunes, Emmanuel Sevin, Laurence Fenart, Fabien Gosselet, Manuel A N Coelho, Maria Carmo Pereira
The aggregation of amyloid-β peptide (Aβ) has been linked to the formation of neuritic plaques, which are pathological hallmarks of Alzheimer's disease (AD). Various natural compounds have been suggested as therapeutics for AD. Among these compounds, resveratrol has aroused great interest due to its neuroprotective characteristics. Here, we provide evidence that grape skin and grape seed extracts increase the inhibition effect on Aβ aggregation. However, after intravenous injection, resveratrol is rapidly metabolized into both glucuronic acid and sulfate conjugations of the phenolic groups in the liver and intestinal epithelial cells (within less than 2 h), which are then eliminated...
February 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28208290/biochip-spray-simplified-coupling-of-surface-plasmon-resonance-biosensing-and-mass-spectrometry
#18
Sweccha Joshi, Han Zuilhof, Teris A van Beek, Michel W F Nielen
A simplified coupling of surface plasmon resonance (SPR) immuno-biosensing with ambient ionization mass spectrometry (MS) was developed. It combines two orthogonal analysis techniques: the biosensing capability of SPR and the chemical identification power of high resolution MS. As a proof-of-principle, deoxynivalenol (DON), an important mycotoxin, was captured using an SPR gold chip containing an antifouling layer and monoclonal antibodies against the toxin and, after washing, the chip could be taken out and analyzed by direct spray MS of the biosensor chip to confirm the identity of DON...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28208257/hydrophilic-interaction-chromatography-hyphenated-with-mass-spectrometry-a-powerful-analytical-tool-for-the-comparison-of-originator-and-biosimilar-therapeutic-monoclonal-antibodies-at-the-middle-up-level-of-analysis
#19
Valentina D'Atri, Szabolcs Fekete, Alain Beck, Matthew Lauber, Davy Guillarme
The development and approval processes of biosimilar mAbs depend on their comparability to originators. Therefore, analytical comparisons are required to assess structural features and post-translational modifications (PTM) and thereby minimize the risk of being clinically meaningful differences between biosimilar and originator drug products. The glycosylation pattern of mAbs is considered to be an important critical quality attribute (CQA), and several analytical approaches have been proposed that facilitate characterizing and monitoring a glycosylation profile, albeit mainly at a glycan and glycopeptide level of analysis...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28208047/targeted-therapy-for-chronic-respiratory-disease-a-new-paradigm
#20
Peter G Gibson, Matthew J Peters, Claire E Wainwright
Targeted therapy has emerged as a highly effective treatment approach for chronic respiratory diseases. Many of these conditions have dismal outcomes; however, targeted therapy shows great results for the subgroup who respond. This represents a new way to approach these conditions and offers great promise as a future treatment direction. In severe eosinophilic asthma, therapy that targets the interleukin-5 pathway with monoclonal antibodies leads to a 50% reduction in asthma exacerbations in previously refractory disease...
February 20, 2017: Medical Journal of Australia
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