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N-glycan profiles in H9N2 avian influenza viruses from chicken eggs and human embryonic lung fibroblast cells.
J Virol Methods
November 2017
Laboratory for Functional Glycomics, College of Life Sciences, Northwest University, Xi'an, China,. Electronic address:
N-glycosylation can affect the host specificity, virulence and infectivity of influenza A viruses (IAVs). In this study, the distribution and evolution of N-glycosylation sites in the hemagglutinin (HA) and neuraminidase (NA) of H9N2 virus were explored using phylogenetic analysis. Then, one strain of the H9N2 subtypes was proliferated in the embryonated chicken eggs (ECE) and human embryonic lung fibroblast cells (MRC-5) system.
View Article and Find Full Text PDFTulane virus recognizes sialic acids as cellular receptors.
Sci Rep
July 2015
1] Division of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH [2] Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH.
The recent discovery that human noroviruses (huNoVs) recognize sialic acids (SAs) in addition to histo-blood group antigens (HBGAs) pointed to a new direction in studying virus-host interactions during calicivirus infection. HuNoVs remain difficult to study due to the lack of an effective cell culture model. In this study, we demonstrated that Tulane virus (TV), a cultivable primate calicivirus, also recognizes SAs in addition to the previously known TV-HBGA interactions.
View Article and Find Full Text PDFStudy was carried out to understand and compare architecture of the proteins of erythrocyte cell surface of some mammals viz., Homo sapiens (human), Sus scorfa domestica (pig) and Bos taurus domestica (cow). In this study, we investigated the action of proteinases viz.
View Article and Find Full Text PDFSialylation by β-galactoside α-2,6-sialyltransferase and N-glycans regulate cell adhesion and invasion in human anaplastic large cell lymphoma.
Int J Oncol
March 2015
Department of Diagnostic Pathology, School of Medicine, Fukushima Medical University, Fukushima, Japan.
The interaction between cell surface glycans and extracellular matrix (ECM) including galectins is known to be closely associated with tumor cell adhesion, invasion and metastasis. We analyzed the roles of cell surface sialylation or glycosylation in galectin or ECM‑mediated cell adhesion and invasion of human malignant lymphoma cells. Neuraminidase from Arthrobacter ureafaciens (AU) treatment resulted in reduction of cell adhesion to galectin‑8 in human anaplastic large cell lymphoma (H‑ALCL) which was established in our laboratory.
View Article and Find Full Text PDFEquine influenza serological methods.
Methods Mol Biol
January 2015
Department of Veterinary Science, OIE Reference Laboratory for Equine Influenza, Maxwell H. Gluck Equine Research Center, University of Kentucky, 1400 Nicholasville Road, Lexington, KY, 40546-0099, USA,
Serologic tests for equine influenza virus (EIV) antibodies are used for many purposes, including retrospective diagnosis, subtyping of virus isolates, antigenic comparison of different virus strains, and measurement of immune responses to EIV vaccines. The hemagglutination-inhibition (HI), single radial hemolysis (SRH), and serum micro-neutralization tests are the most widely used for these purposes and are described here. The presence of inhibitors of hemagglutination in equine serum complicates interpretation of HI assay results, and there are alternative protocols (receptor-destroying enzyme, periodate, trypsin-periodate) for their removal.
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