Cell Docking and On-Chip Monitoring of Cellular Reactions with a Controlled Concentration Gradient on a Microfluidic Device

Citations Over TimeTop 10% of 2002 papers

Abstract

We have developed a microfluidic device for on-chip monitoring of cellular reactions. The device consists of two primary analytical functions: control of cell transport and immobilization, and dilution of an analyte solution to generate a concentration gradient. In this device, a dam structure in parallel to the fluid flow was constructed for docking and alignment of biological cells, which allows the fragile cells to move in the microfluidic channels and to be immobilized with controllable numbers in desired locations. The cells docked on the parallel dam structure are exposed to minimal stress caused by fluidic pressure. Additionally, a network of microfluidic channels was designed to generate a concentration gradient by controlled fluid distribution and diffusive mixing. An analyte solution could be diluted to different gradients as a function of distance along the dam. We used the ATP-dependent calcium uptake reaction of HL-60 cells as a model for on-chip measurement of the threshold ATP concentration that induces significant intracellular calcium signal. The results have demonstrated the feasibility of using the microchip for real-time monitoring of cellular processes upon treatment of a concentration gradient of a test solution. The integration of cell manipulation and solution manipulation on a microchip allows the measurement of concentration-dependent biological responses within a confined microscale feature.

Related Papers

• → The effect of non‐uniform microscale distribution of sorption sites on solute diffusion in soil(2016)11 cited
• → The development of a microscale strain measurement system applied to sheet bulge hydroforming(2014)9 cited
• → The Study of Microscale Effect Assessment in Micro Forming(2014)
• PRACTICAL APPLICATION OF MICROSCALE LABORATORY(2000)
• A Design of Microscale Chemistry Experiments(2009)