Assessment of the inhibition of Dengue virus infection by carrageenan via real-time monitoring of cellular oxygen consumption rates within a microfluidic device

被引:10
作者
Huang, Shih-Hao [1 ,2 ]
Lin, Yi-Syun [1 ]
Wu, Chih-Wei [1 ]
Wu, Chang-Jer [3 ]
机构
[1] Natl Taiwan Ocean Univ, Dept Mech & Mechatron Engn, Keelung 20224, Taiwan
[2] Natl Taiwan Ocean Univ, CMMS, CEO, Keelung 20224, Taiwan
[3] Natl Taiwan Ocean Univ, Dept Food Sci, Keelung 20224, Taiwan
来源
BIOMICROFLUIDICS | 2014年 / 8卷 / 02期
关键词
D O I
10.1063/1.4870772
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A microfluidic device combined with a light modulation system was developed to assess the inhibitory effect of carrageenan on Dengue virus (DENV) infection via real-time monitoring of cellular oxygen consumption rates (OCRs). Measuring cellular OCRs, which can reflect cellular metabolic activity, enabled us to monitor the process of viral infection in real time and to rapidly determine the antiviral activity of potential drugs/chemical compounds. The time variation of the cellular OCR of single cells that were infected in situ by DENV at different multiplicity of infection (m.o.i.) values was first successfully measured within a microfluidic device. The influence of the timing of carrageenan treatment on DENV infection was then examined by real-time monitoring of cellular OCRs in three groups. Cells that were pre-treated with carrageenan and then infected with DENV served as a pre-treatment group, cells to which carrageenan was added simultaneously with DENV served as a virucide group, and cells that were pre-infected with DENV and then treated with carrageenan served as a post-treatment group. By monitoring cellular OCRs, we could rapidly evaluate the inhibitory effect of carrageenan on DENV infection, obtaining a result within 7 h and showing that carrageenan had strong and effective anti-DENV activity in the three groups. In particular, a strong inhibitory effect was observed in the virucide group. Moreover, once the virus enters host cells in the post-treatment group, the immediate treatment with carrageenan for the infected cells has higher efficiency of antiviral activity. Our proposed platform enables to perform time-course or dose-response measurements of changes in cellular metabolic activity caused by diseases, chemical compounds, and drugs via monitoring of the cellular OCR, with rapid and real-time detection. This approach provides the potential to study a wide range of biological applications in cell-based biosensing, toxicology, and drug discovery. (C) 2014 AIP Publishing LLC.
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页数:14
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