Drug testing and flow cytometry analysis on a large number of uniform sized tumor spheroids using a microfluidic device

Scientific Reports
Bishnubrata PatraYi-Chung Tung

Abstract

Three-dimensional (3D) tumor spheroid possesses great potential as an in vitro model to improve predictive capacity for pre-clinical drug testing. In this paper, we combine advantages of flow cytometry and microfluidics to perform drug testing and analysis on a large number (5000) of uniform sized tumor spheroids. The spheroids are formed, cultured, and treated with drugs inside a microfluidic device. The spheroids can then be harvested from the device without tedious operation. Due to the ample cell numbers, the spheroids can be dissociated into single cells for flow cytometry analysis. Flow cytometry provides statistical information in single cell resolution that makes it feasible to better investigate drug functions on the cells in more in vivo-like 3D formation. In the experiments, human hepatocellular carcinoma cells (HepG2) are exploited to form tumor spheroids within the microfluidic device, and three anti-cancer drugs: Cisplatin, Resveratrol, and Tirapazamine (TPZ), and their combinations are tested on the tumor spheroids with two different sizes. The experimental results suggest the cell culture format (2D monolayer vs. 3D spheroid) and spheroid size play critical roles in drug responses, and also demonstrate the advan...Continue Reading

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Citations

Jan 19, 2018·International Journal of Molecular Sciences·Jessica Hoarau-VéchotJennifer Pasquier
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Methods Mentioned

BETA
confocal microscopy
flow cytometry
biopsy

Software Mentioned

ImageJ

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