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Micromachines 2017, 8(1), 27; doi:10.3390/mi8010027

Human Liver Sinusoid on a Chip for Hepatitis B Virus Replication Study

1
Mechanical Engineering and Mechanics, Drexel University, Philadelphia, PA 19104, USA
2
Graduate Program in Molecular and Cellular Biology and Genetics, Graduate School of Biomedical Sciences and Professional Studies, Drexel University College of Medicine, Philadelphia, PA 19129, USA
3
Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, PA 19129, USA
*
Authors to whom correspondence should be addressed.
Academic Editors: Nam-Trung Nguyen and Seyed Ali Mousavi Shaegh
Received: 30 August 2016 / Revised: 19 December 2016 / Accepted: 11 January 2017 / Published: 20 January 2017
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Abstract

We have developed a miniature human liver (liver-sinusoid-on-a-chip) model using a dual microchannel separated by a porous membrane. Primary human hepatocytes and immortalized bovine aortic endothelial cells were co-cultured on opposite sides of a microporous membrane in a dual microchannel with continuous perfusion. Primary human hepatocytes in this system retained their polygonal morphology for up to 26 days, while hepatocytes cultured in the absence of bovine aortic endothelial cells lost their morphology within a week. In order to demonstrate the utility of our human-liver-sinusoid-on-a-chip, human hepatocytes in this system were directly infected by Hepatitis B Virus (HBV). Expression of the HBV core antigen was detected in human hepatocytes in the microchannel system. HBV replication, measured by the presence of cell-secreted HBV DNA, was also detected. Importantly, HBV is hepatotropic, and expression of HBV RNA transcripts is dependent upon expression of hepatocyte-specific factors. Moreover, HBV infection requires expression of the human-hepatocyte-specific HBV cell surface receptor. Therefore, the ability to detect HBV replication and Hepatitis B core Antigen (HBcAg) expression in our microfluidic platform confirmed that hepatocyte differentiation and functions were retained throughout the time course of our studies. We believe that our human-liver-sinusoid-on-a-chip could have many applications in liver-related research and drug development. View Full-Text
Keywords: liver sinusoid; human-liver-sinusoid-on-a-chip; Hepatitis B virus (HBV); HBV replication study; hepatocyte; microfluidic platform liver sinusoid; human-liver-sinusoid-on-a-chip; Hepatitis B virus (HBV); HBV replication study; hepatocyte; microfluidic platform
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Kang, Y.B.A.; Rawat, S.; Duchemin, N.; Bouchard, M.; Noh, M. Human Liver Sinusoid on a Chip for Hepatitis B Virus Replication Study. Micromachines 2017, 8, 27.

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