2018 Annual Meeting of the Society for Mathematical Biology & the Japanese Society for Mathematical Biology

8-12 July 2018
Australia/Sydney timezone

Dynamics of HIV-1 coinfection under different susceptible target cell populations during cell-free infection in cell culture

11 Jul 2018, 15:30
30m
New Law School/--024 (University of Sydney)

New Law School/--024

University of Sydney

100
Oral Presentation Minisymposium: Modelling immune interactions with disease

Speaker

Mr Yusuke Ito (Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka 819-0395, Japan)

Description

Human Immunodeficiency Virus typeⅠ (HIV-1) mutations are rapidly accumulated through recombination events which are largely caused by HIV-1 coinfection [1]. Therefore, HIV-1 coinfection has the potential to produce the drug-resistant viruses, which leads to the high pathologies and disease progression. Recently, it has been reported that coinfection occurs more frequently than at random both in vitro and in vivo [1,2], implying that this viral phenomenon is quite common in HIV-1 infection. Furthermore, one possible mechanism of HIV-1 coinfection is driven by the different susceptibility of target cells [2,3]. Thus, the elucidation of HIV-1 coinfection associated with different susceptible target cell populations is required to more accurately capture the general viral mechanism in HIV-1 infection. In this study, we constructed ordinary differential equations considering the heterogeneity of target cell populations during cell-free infection in cell culture, and reproduced the cell culture experiment data. Interestingly, our mathematical analyses demonstrated that 2 different susceptible target cell subpopulations could explain coinfection experiments in cell culture using the AIC model selection. In addition, our novel finding is that coinfected cells are emerged from the most susceptible subpopulation at 98.2% on average. Taken together, our mathematical-experimental approach suggested that the most susceptible target cell population is the dominant resource of HIV-1 infection in cell-free infection.

[1] Q. Dang et al., 2004
[2] J. Chen et al., 2005
[3] A. Remion, et al., 2016

Primary author

Mr Yusuke Ito (Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka 819-0395, Japan)

Co-authors

Keisuke Ejima (Department of Epidemiology and Biostatistics, School of Public Health, Indiana University -Bloomington, IN, USA.) Fabrizio Mammano (INSERM, U941, 75010 Paris, France. ) Shingo Iwami (Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka 819-0395, Japan)

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