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- W2020961978 abstract "We report an opto-microfluidic method for continuous and non-interfering monitoring of cell movement and dynamic molecular processes in living cells enabled by the microfluidic “Lab-in-a-Trench” (LiaT) platform. To demonstrate real-time monitoring of heterogeneous cell–cell interactions, cell tracking and agent-induced cell activation dynamics, we observe phagocytosis of Escherichia coli by murine macrophages, migration of active macrophages and LPS-induced CD86 expression in macrophages. The visualization of phagocytosis is facilitated through the loading of green fluorescent protein (GFP) expressing E. coli to the array of cell capture modules before the introduction of macrophages. Simple migration tracking of active macrophages is enabled by a spatio-temporal control of the environment conditions within the LiaT platform. Furthermore, we report an interference-free monitoring of non-modified, endogenous changes in protein expression on the surface of living cells using traditional, antibody immuno-reagents. Throughout the experiment, murine macrophages were captured in the LiaT device and exposed to sub-background levels of fluorescently labeled anti-CD86 antibody. Upon lipopolysaccharide (LPS) stimulation, CD86 changes were visualized in real-time by time-lapse microscopy. This novel opto-microfluidic effect is controlled by the equilibrium of convective–diffusive replenishment of fluorescently labeled antibodies and antibody affinity. Overall, our non-interfering analysis method allows the studying of active cellular processes and endogenous protein dynamics in live cells in a simple and cost-efficient manner." @default.
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- W2020961978 date "2015-05-01" @default.
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- W2020961978 title "Real-time monitoring of cell migration, phagocytosis and cell surface receptor dynamics using a novel, live-cell opto-microfluidic technique" @default.
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- W2020961978 doi "https://doi.org/10.1016/j.aca.2014.12.035" @default.
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