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Mitigation of Channel Clogging in a Microfluidic Device for Capturing Circulating Tumor Cells
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Mitigation of Channel Clogging in a Microfluidic Device for Capturing Circulating Tumor Cells
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Journal Article
Mitigation of Channel Clogging in a Microfluidic Device for Capturing Circulating Tumor Cells
2020
Overview
Deterministic lateral displacement (DLD) based microfluidic devices have been developed for capturing circulating tumor cells (CTCs) from the peripheral blood. There was frequent and problematic channel clogging around the micro-post array formed on a microchannel of the device. In this study, various agents were dispersed into the blood specimen to avoid clogging. At first, platelet aggregation was considered to be the cause of the clogging, but even plasmin, which was assumed to decompose platelet aggregations, did not show obvious inhibition of the clogging. Then, enzymes used for cell detachment from tissue were examined and decomposition of the clogging residue was observed. Finally, dispersion of deoxyribonuclease into a blood specimen was found to be effective for the inhibition of clogging. The existence of DNA in the clogging residue was also confirmed by propidium iodide (PI) staining, suggesting DNA adhering to the micro-post.
Publisher
Fuji Technology Press Co. Ltd
Subject
