Predicting mechanism of action and quantifying anti-viral effects of cytokines against hepatitis B virus

10 Jul 2018, 11:00
New Law School/--106 (University of Sydney)

New Law School/--106

University of Sydney

Oral Presentation Minisymposium: Frontiers in Viral Dynamics Frontiers in viral dynamics


Mr Yusuke Kakizoe (Systems Life Sciences, Graduate school of Kyushu University)


Hepatitis B Virus (HBV) is widespread infectious disease and more than 240 million people are chronic infected so far. Although some patients can suppress the viral load under detection limits by current drug treatments, these are not effective for over 60% of patients. The obstacles for developing effective drugs are the existence of a reservoir in infected cells, which is known as covalently closed circular DNA (cccDNA). Because cccDNA remains in infected cells for a long time, the replication of HBV is not completely inhibited. We need new effective drug that can decrease the concentration of cccDNA persistently. In this study, we carried out cell culture experiments that can be measured the time course of the concentration of cccDNA, intracellular HBV DNA and extracellular DNA. Then, we added several kinds of cytokines in this experiment, and measured the same time course data. Furthermore, to investigate mechanism of action and quantify the anti-viral effect of each cytokine, we established a mathematical model that can capture the dynamics of intracellular HBV replication and fitted this model to the our time course data. Finally, we investigated which cytokines can decrease the concentration of cccDNA. This framework that combining viral experiment and mathematical model would be helpful to find a chemical that have desired mechanism of action.

Primary authors

Mr Yusuke Kakizoe (Systems Life Sciences, Graduate school of Kyushu University) Dr Masashi Iwamoto (National Institute of Infectious Diseases) Dr Koichi Watashi (National Institute of Infectious Diseases) Dr Shingo Iwami (Department of Biology, Kyushu University)

Presentation Materials

There are no materials yet.