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Microfluidic Chip Simulates Blood Vessels to Help Study Nanomedicines

February 4th, 2014 Medgadget Editors News

endothelialized-microfluidic-device

Schematic of an endothelialized microfluidic device that consists of two-layer microfluidic channels that are separated by a porous membrane (3 μm pore) on which endothelial cells are grown. Credit: Kim/PNAS.

As advances in nanotechnology continue to open up therapeutic options for a variety of conditions, it is becoming increasingly important to have in vivo platforms for screening how potential nanomedicines can influence the body once injected. Atherosclerosis is a particularly important example of a disease that can benefit from nanomedicine, or one that may influence how nanomedicines are able to enter the blood stream.

In order to study these interactions, researchers at Georgia Tech have developed a microfluidic device that includes a passage covered with endothelial cells. A membrane on the bottom of the channel keeps the endothelial cells in position, while allowing nanoparticles that managed to pass through the layer to drop into a lower channel.

More from Georgia Tech:

On their microchip, scientists can control the permeability of the endothelial cell layer by altering the rate of blood flow across the cells or by introducing a chemical that is released by the body during inflammation. The researchers discovered that the permeability of the cells on the microchip correlated well with the permeability of microvessels in a large animal model of atherosclerosis.

The microchips allows for precise control of the mechanical and chemical environment around the living cells. By using the microchip, the researchers can create physiologically relevant conditions to cells by altering the rate of blood flow across the cells or by introducing a chemical that is released by the body during inflammation.

Study in Proceedings of the National Academy of Sciences: Probing nanoparticle translocation across the permeable endothelium in experimental atherosclerosis…

Press release: In Vitro Innovation: Testing Nanomedicine With Blood Cells On A Microchip…

Medgadget Editors

Medical technologies transform the world! Join us and see the progress in real time. At Medgadget, we report the latest technology news, interview leaders in the field, and file dispatches from medical events around the world since 2004.

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