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https://www.readbyqxmd.com/read/28816347/the-silent-enemy-celiac-disease-goes-viral
#1
Alberto Reale, Marta Trevisan, Gualtiero Alvisi, Giorgio Palù
Celiac disease is a multifactorial autoimmune chronic inflammatory disorder affecting approximately one percent of the worldwide population. In such patients, ingestion of gluten proteins from cereals like wheat, barley and rye causes damage of the small intestine mucosa, with potentially severe consequences. Onset of the disease in predisposed individuals is believed to require a still not clearly identified external trigger, such as viral infections. A very recent study has begun to shed light on a possible mechanistic basis for this hypothesis, and surprisingly linked intestinal infections caused by common reoviruses to the onset of celiac disease...
August 17, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28812060/reolysin-and-histone-deacetylase-inhibition-in-the-treatment-of-head-and-neck-squamous-cell-carcinoma
#2
Alena C Jaime-Ramirez, Jun-Ge Yu, Enrico Caserta, Ji Young Yoo, Jianying Zhang, Tae Jin Lee, Craig Hofmeister, John H Lee, Bhavna Kumar, Quintin Pan, Pawan Kumar, Robert Baiocchi, Theodoros Teknos, Flavia Pichiorri, Balveen Kaur, Matthew Old
Oncolytic viruses (OVs) are emerging as powerful anti-cancer agents and are currently being tested for their safety and efficacy in patients. Reovirus (Reolysin), a naturally occurring non-pathogenic, double-stranded RNA virus, has natural oncolytic activity and is being tested in phase I-III clinical trials in a variety of tumor types. With its recent US Food and Drug Administration (FDA) orphan drug designation for several tumor types, Reolysin is a potential therapeutic agent for various cancers, including head and neck squamous cell carcinomas (HNSCCs), which have a 5-year survival of ∼55%...
June 16, 2017: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/28796556/systemic-virotherapy-for-multiple-myeloma
#3
Stefania Oliva, Manuela Gambella, Mario Boccadoro, Sara Bringhen
The multiple myeloma (MM) treatment scenario has changed considerably over the past few years. Several novel targeted therapies are currently under consideration including oncolytic virotherapy. Areas covered: This review provides an analysis of the mechanisms of action of virotherapy, and summarizes the preclinical and clinical studies of systemic virotherapy developed for the treatment of MM. Different types of viruses have been identified, including: adenovirus, vaccinia virus, herpes simplex virus 1, myxoma virus, reovirus, measles virus, vesicular stomatitis virus and coxsackievirus A21...
August 10, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28794028/the-reovirus-%C3%AE-1-340-343-loop-controls-entry-related-conformational-changes
#4
Anthony J Snyder, Pranav Danthi
Reovirus particles are covered with 200 μ1/σ3 heterohexamers. Following attachment to cell surface receptors, reovirus is internalized by receptor-mediated endocytosis. Within the endosome, particles undergo a series of step-wise disassembly events. First, the σ3 protector protein is degraded by cellular proteases to generate infectious subviral particles (ISVPs). Second, the μ1 protein rearranges into a protease sensitive conformation to generate ISVP*s and releases two virally encoded peptides, μ1N and Φ...
August 9, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28789694/co-infection-of-two-reoviruses-increases-both-viruses-accumulation-in-rice-by-up-regulating-of-viroplasm-components-and-movement-proteins-bilaterally-and-rna-silencing-suppressor-unilaterally
#5
Shu Li, Tong Zhang, Yingzhi Zhu, Guohui Zhou
BACKGROUND: Synergism between southern rice black-streaked dwarf virus (SRBSDV) and rice ragged stunt virus (RRSV) not only aggravates disease symptoms but also enhances their vector acquisition efficiencies by increasing both viruses' titers in co-infected rice plants, which may exacerbate the epidemic of both viruses and cause significant damage to rice production. The molecular mechanism of viral synergism of these two viruses remains unexplored. METHODS: Single and double infection of SRBSDV and RRSV were obtained with the viruliferous white-backed planthopper and brown planthopper inoculation on four-leaf stage rice seedlings, respectively, under experimental condition...
August 8, 2017: Virology Journal
https://www.readbyqxmd.com/read/28778072/bid-deficient-fish-delay-grass-carp-reovirus-gcrv-replication-and-attenuate-gcrv-triggered-apoptosis
#6
Libo He, Hao Wang, Lifei Luo, Yongming Li, Rong Huang, Lanjie Liao, Zuoyan Zhu, Yaping Wang
Bid, BH3-interacting domain death agonist, is a pro-apoptotic BH3-only member of Bcl-2 family, playing an important role in apoptosis. In the study, Bid genes from grass carp (Ctenopharyngodon idellus) and rare minnow (Gobiocypris rarus), named CiBid and GrBid, were cloned and analyzed. Bid was constitutively expressed in all examined tissues of grass carp, but the expression level varied in different tissues. Following grass carp reovirus (GCRV) stimulation in vivo, Bid and apoptosis related genes Caspase-9 and Caspase-3 was up-regulated significantly at the late stage of infection...
July 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28761188/flock-level-prevalence-geographical-distribution-and-seasonal-variation-of-avian-reovirus-among-broiler-flocks-in-ontario
#7
Eric G Nham, David L Pearl, Durda Slavic, Rachel Ouckama, Davor Ojkic, Michele T Guerin
Avian reovirus (ARV) is an economically significant pathogen of broiler chickens. Our objective was to determine the prevalence, geographical distribution, and seasonal variation of ARV infection among commercial broiler flocks in Ontario, Canada during grow-out. A cross-sectional study of 231 randomly selected flocks was conducted from July 2010 to January 2012. Fifteen blood samples, 15 whole intestines, and 15 cloacal swabs per flock were collected at slaughter; ELISA and PCR were used to determine a flock's ARV exposure status...
August 2017: Canadian Veterinary Journal. la Revue Vétérinaire Canadienne
https://www.readbyqxmd.com/read/28756871/randomized-phase-iib-evaluation-of-weekly-paclitaxel-versus-weekly-paclitaxel-with-oncolytic-reovirus-reolysin%C3%A2-in-recurrent-ovarian-tubal-or-peritoneal-cancer-an-nrg-oncology-gynecologic-oncology-group-study
#8
REVIEW
David E Cohn, Michael W Sill, Joan L Walker, David O'Malley, Christa I Nagel, Teresa L Rutledge, William Bradley, Debra L Richardson, Katherine M Moxley, Carol Aghajanian
OBJECTIVE: To assess whether the addition of oncolytic reovirus (Reolysin®) to weekly paclitaxel prolonged progression-free survival (PFS) in the treatment of women with recurrent or persistent ovarian, tubal or primary peritoneal cancer. PATIENTS AND METHODS: Patients with recurrent or persistent epithelial ovarian, tubal, or peritoneal carcinoma, measurable or detectable disease, and three or fewer prior regimens were randomly assigned to paclitaxel (80mg/m(2) intravenously days 1, 8, and 15 every 4weeks) or the combination of paclitaxel (80mg/m(2) intravenously days 1, 8, and 15) plus reovirus 3×10(10)TCID50/day intravenously on days 1-5, both every 4weeks until disease progression or toxicity...
July 27, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28728835/a-multiplex-pcr-for-detection-of-six-viruses-in-ducks
#9
Yongjuan Wang, Shanyuan Zhu, Weiming Hong, Anping Wang, Weiyong Zuo
In this study, six pairs of specific primers that can amplify DNA fragments of different sizes were designed and synthesized according to viral protein gene sequences published in GenBank. Then, a multiplex PCR method was established for rapid detection of duck hepatitis virus 1, duck plague virus, duck Tembusu virus, muscovy duck parvovirus, muscovy duck reovirus, and duck H9N2 avian influenza virus, and achieve simple and rapid detection of viral diseases in ducks. Single PCR was used to confirm primer specificity, and PCR conditions were optimized to construct a multiplex PCR system...
July 17, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28724773/nkp46-recognizes-the-sigma1-protein-of-reovirus-implications-for-reovirus-based-cancer-therapy
#10
Yotam Bar-On, Yoav Charpak-Amikam, Ariella Glasner, Batya Isaacson, Alexandra Duev-Cohen, Pinchas Tsukerman, Alexander Varvak, Michal Mandelboim, Ofer Mandelboim
The recent approval of onclolytic virus for therapy of melanoma patients has increased the need for precise evaluation of the mechanisms by which oncolytic viruses affect tumor growth. Here we show that the human NK activating receptor, NKp46, and its mouse orthologous protein, NCR1, recognize the reovirus sigma1 protein in a sialic-acid-dependent manner. We identify NKp46/NCR1 binding sites to sigma1 and show that sigma1 binding by NKp46/NCR1 leads to NK cell activation in vitro Finally, we demonstrate that NCR1 activation is essential for reovirus-based therapy in vivo Collectively, we identified sigma1 as a novel ligand for NKp46/NCR1 and demonstrated that NKp46/NCR1 is needed for both clearance of reovirus infections and reovirus-based tumor therapy...
July 19, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28713375/interferon-lambda-a-potent-regulator-of-intestinal-viral-infections
#11
REVIEW
Sanghyun Lee, Megan T Baldridge
Interferon-lambda (IFN-λ) is a recently described cytokine found to be of critical importance in innate immune regulation of intestinal viruses. Endogenous IFN-λ has potent antiviral effects and has been shown to control multiple intestinal viruses and may represent a factor that contributes to human variability in response to infection. Importantly, recombinant IFN-λ has therapeutic potential against enteric viral infections, many of which lack other effective treatments. In this mini-review, we describe recent advances regarding IFN-λ-mediated regulation of enteric viruses with important clinical relevance including rotavirus, reovirus, and norovirus...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28712033/oncolytic-immunotherapy-unlocking-the-potential-of-viruses-to-help-target-cancer
#12
REVIEW
Omid Hamid, Brianna Hoffner, Eduard Gasal, Jenny Hong, Richard D Carvajal
Oncolytic immunotherapy is a research area of cancer immunotherapy investigating the use of modified viruses to target cancer cells. A variety of different viral backbones (e.g., adenovirus, reovirus) with a diverse range of genetic modifications are currently being investigated for the treatment of a variety of cancers. The oncolytic virus that has advanced the furthest in clinical development is talimogene laherparepvec, a recombinant HSV-1 virus expressing granulocyte-macrophage colony-stimulating factor (GM-CSF)...
July 15, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28701787/avian-reovirus-p17-and-%C3%AF-a-act-cooperatively-to-downregulate-akt-by-suppressing-mtorc2-and-cdk2-cyclin-a2-and-upregulating-proteasome-psmb6
#13
Wei-Ru Huang, Pei-I Chi, Hung-Chuan Chiu, Jue-Liang Hsu, Brent L Nielsen, Tsai-Ling Liao, Hung-Jen Liu
Although we have shown that avian reovirus (ARV) p17-mediated inhibition of Akt leads to induction of autophagy, the precise mechanisms remain largely unknown. This study has identified a specific mechanism by which ARV coordinately regulates the degradation of ribosomal proteins by p17-mediated activation of E3 ligase MDM2 that targets ribosomal proteins and by σA-mediated upregulation of proteasome PSMB6. In addition to downregulating ribosomal proteins, p17 reduces mTORC2 assembly and disrupts mTORC2-robosome association, both of which inactivate mTORC2 leading to inhibition of Akt phosphorylation at S473...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28686568/comparing-viral-metagenomic-extraction-methods
#14
Jeanette Klenner, Claudia Kohl, Piotr Wojtek Dabrowski, Andreas Nitsche
A crucial step in the molecular detection of viruses in clinical specimens is the efficient extraction of viral nucleic acids. The total yield of viral nucleic acid from a clinical specimen is dependent on the specimen's volume, the initial virus concentration and the effectiveness provided by the extraction method. Recent Next Generation Sequencing (NGS)-based diagnostic approaches (i.e. metagenomics) provide a molecular 'open view' into the sample, as they theoretically generate sequence reads of any nucleic acid present in a specimen in a statistically representative manner...
July 6, 2017: Current Issues in Molecular Biology
https://www.readbyqxmd.com/read/28683792/preparation-and-evaluation-of-goose-reovirus-inactivated-vaccine
#15
Xiaoyu Niu, Bingqian Zhang, Xianglong Yu, Xin Zhang, Yanguo Dou, Yi Tang, Youxiang Diao
BACKGROUND: Infection with Goose Reovirus (GRV) can cause serious economic losses in the goose breeding industry. In this study, the GRV allantoic fluid was concentrated and used as an antigen in a formalin-inactivated oil-emulsion vaccine. RESULTS: When 6 day-old geese were inoculated, antibodies against GRV became detectable at 6 days post-vaccination, their concentration peaked at 3 weeks. These antibodies were maintained for longer than 2 weeks. As the most susceptible age for GRV infection is birds under 2 weeks of age this vaccine should provide adequate cover for the most at risk birds...
July 6, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28674382/the-destiny-of-the-resistance-susceptibility-against-gcrv-is-controlled-by-epigenetic-mechanisms-in-cik-cells
#16
Xueying Shang, Chunrong Yang, Quanyuan Wan, Youliang Rao, Jianguo Su
Hemorrhagic disease caused by grass carp reovirus (GCRV) has severely threatened the grass carp (Ctenopharyngodon idella) cultivation industry. It is noteworthy that the resistance against GCRV infection was reported to be inheritable, and identified at both individual and cellular levels. Therefore, this work was inspired and dedicated to unravel the molecular mechanisms of fate decision post GCRV infection in related immune cells. Foremost, the resistant and susceptible CIK (C. idella kidney) monoclonal cells were established by single cell sorting, subculturing and infection screening successively...
July 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28672089/genome-packaging-of-reovirus-is-mediated-by-the-scaffolding-property-of-the-microtubule-network
#17
Pranav N M Shah, Megan L Stanifer, Katharina Höhn, Ulrike Engel, Uta Haselmann, Ralf Bartenschlager, Hans-Georg Kräusslich, Jacomine Krijnse-Locker, Steeve Boulant
Reovirus replication occurs in the cytoplasm of the host cell, in virally induced mini-organelles called virus factories. Based on the serotype of the virus, the virus factories can manifest as filamentous (T1L strain) or globular structures (T3D strain). The filamentous factories morphology is dependent on the microtubule cytoskeleton; however, the exact function of the microtubule network in virus replication remains unknown. Using a combination of fluorescent microscopy, electron microscopy, and tomography of high-pressure frozen and freeze substituted cells, we determined the ultrastructural organization of reovirus factories...
July 3, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28666650/functional-characterization-of-duck-lsm14a-in-ifn-%C3%AE-induction
#18
Kexin Hua, Huilin Li, Huanchun Chen, Mohamed Frahat Foda, Rui Luo, Hui Jin
Human LSm14A is a key component of processing body (P-body) assembly that mediates interferon-β (IFN-β) production by sensing viral RNA or DNA. To the best of our knowledge, we are the first to report duck LSm14A (duLSm14A) cloning from duck embryo fibroblasts (DEFs). Full-length duLSm14A encoded 461 amino acids and was highly homologous with chicken and swan goose sequences. More interestingly, the duLSm14A mRNA was extensively expressed in all the studied tissues. In DEFs, duLSm14A was localized in the cytoplasm as P-body-like dots...
June 27, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28620186/phenotypic-genotypic-and-antigenic-characterization-of-emerging-avian-reoviruses-isolated-from-clinical-cases-of-arthritis-in-broilers-in-saskatchewan-canada
#19
Lisanework E Ayalew, Ashish Gupta, Jenny Fricke, Khawaja Ashfaque Ahmed, Shelly Popowich, Betty Lockerbie, Suresh K Tikoo, Davor Ojkic, Susantha Gomis
In recent years, emerging strains of pathogenic arthrogenic avian reovirus (ARV) have become a challenge to the chicken industry across USA and Canada causing significant economic impact. In this study, we characterized emerging variant ARV strains and examined their genetic and antigenic relationship with reference strains. We isolated 37 emerging variant ARV strains from tendons of broiler chickens with clinical cases of arthritis/tenosynovitis at commercial farms in Saskatchewan, Canada. Viral characterization using immunocytochemistry, gold-immunolabeling and electron microscopy revealed distinct features characteristic of ARV...
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28604109/viral-gene-therapy-for-breast-cancer-progress-and-challenges
#20
Antonela S Asad, Mariela A Moreno Ayala, M Florencia Gottardo, Camila Zuccato, Alejandro Javier Nicola Candia, Flavia A Zanetti, Adriana Seilicovich, Marianela Candolfi
Breast cancer is the most common cancer in women all over the world. Furthermore, up to one third of breast tumors develop metastases that are resistant to standard therapies. Gene therapeutic strategies have been developed in order to specifically target cancer cells either directly or through the stimulation of antitumor immunity. Areas covered: This review describes the therapeutic strategies that are currently under development to treat this disease using engineered viral vectors including: adenovirus, adeno-associated virus, lentivirus, poxvirus, reovirus, baculovirus, herpesvirus and oncolytic viruses...
June 12, 2017: Expert Opinion on Biological Therapy
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