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April 14, 2014
06:33 EDTONCYOncolytics Biotech collaborators present head, neck cancer biomarker poster
Oncolytics Biotech announced that a poster authored by Bolton, et al was presented at the 8th Annual International Conference on Oncolytic Virus Therapeutics held in Oxford, UK. The poster, titled "Resistance to oncolytic reovirus is associated with high expression of Yes-Associated Protein, or YAP-1, in head and neck cancer," covered preclinical research focused on identifying biomarkers predictive of sensitivity/resistance to reovirus in head and neck cancer cell lines. Researchers examined reovirus in panels of head and neck cancer cell lines to determine their sensitivity to reovirus-induced oncolysis. The study results showed that high YAP-1 protein expression correlated with reovirus resistance, whereas low YAP-1 expression correlated with sensitivity to reovirus infection. They also indicated that knocking the YAP-1 gene down resulted in certain cells becoming significantly more sensitive to reovirus infection. The researchers concluded that YAP-1 is a possible biomarker for sensitivity/resistance to reovirus infection in head and neck cancer and that further investigation into the crosstalk between chemical signaling pathways upstream and downstream of YAP-1 and its cellular localization, is important in understanding how it may be impeding reovirus oncolysis.
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June 15, 2015
06:31 EDTONCYOncolytics collaborators present Reolysin preclinical data
Oncolytics announced that a series of oral and poster presentations are being made by the company's research collaborators. Dr. Richard Vile is making an oral presentation regarding previously disclosed findings around augmenting tumor-specific natural killer responses and specifically attenuating tumor-specific immunosuppression. These data also suggest that the combination of PD-1 inhibition therapy with reovirus oncolytic/immunotherapy represents a readily translatable method to enhance the therapeutic efficacy. The first abstract/poster titled "Targeting peripheral and lymph node resistant CLL with combination reovirus therapy," was authored by Melcher, et al. The authors studied chronic lymphocytic leukemia and the problems associated with eradicating minimal residual disease and drug resistance. They concluded that the combination of reovirus and ABT-263 could increase direct and immune-mediated killing of peripheral disease and that reovirus in combination with Fludarabine may be useful in targeting drug-resistant lymph node disease. The second abstract/poster titled "Oncolysis by reovirus as an immune priming mechanism with VSV-cDNA immunological boosting treats large established tumors," was authored by Melcher, et al. The authors looked at the treatment of established B16 melanoma tumors in a mouse model. They concluded that the local killing of cancer cells by one virus primed the immune system and, by using tumor antigens expressed from a second virus, it was possible to generate potent immunological responses that led to the rejection of well established tumors. The third abstract/poster titled "Monocyte carriage and delivery of reovirus-antibody complexes for melanoma oncolysis," was authored by Melcher, et al. The authors studied preexisting antiviral

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