2018
DOI: 10.1248/bpb.b18-00316
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A Flow Cytometry-Based Method to Determine the Titer of Adenoviruses Expressing an Extraneous Gene

Abstract: In recent times, oncolytic viruses expressing an extraneous gene have attracted great interest; in fact, they have been engaged in multiple applications, such as medicine for cancer. Our group made an oncolytic adenovirus, namely, OBP-301, for use in treating solid cancers and press clinical trial to get approval for a pharmaceutical product. In this study, we applied a flow cytometry-based method to determine the titer of adenoviruses expressing an extraneous gene as well as assess their quality. We considere… Show more

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Cited by 4 publications
(3 citation statements)
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“…At high antiviral drug concentrations, GFP-expressing cells weakly inhibited by the drug were sensitively detected by flow cytometry. Therefore, 50 % effective concentration (EC50) calculation was defined as the drug concentration that reduced the number of GFP cells by half [ 23 , 24 ].…”
Section: Methodsmentioning
confidence: 99%
“…At high antiviral drug concentrations, GFP-expressing cells weakly inhibited by the drug were sensitively detected by flow cytometry. Therefore, 50 % effective concentration (EC50) calculation was defined as the drug concentration that reduced the number of GFP cells by half [ 23 , 24 ].…”
Section: Methodsmentioning
confidence: 99%
“…Adenoviruses were produced as described [ 25 ]. Adenovirus titers were determined by Median Tissue Culture Infectious Dose (TCID50) [ 26 ].…”
Section: Methodsmentioning
confidence: 99%
“…Para la misma, se han propuesto diversos métodos que requieren desde el uso diversas técnicas como qPCR y comparaciones con adenovirus de referencia (Gallaher & Berk, 2013;Palmer & Ng, 2004;Sandig et al, 2000). Por otra parte, para vectores virales que poseen el gen de la GFP u otros genes reporteros, se han desarrollado métodos alternativos de titulación (Asada et al, 2018;Hitt et al, 2000). En este trabajo se tituló el HD-Ad OSKM propagado y purificado por combinación del método de dilución a punto final con la observación de fluorescencia verde de la GFP como reportador de la transducción.…”
Section: Discussionunclassified