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dc.contributor.advisorFolch, Alberten_US
dc.contributor.authorSip, Christopher G.en_US
dc.date.accessioned2013-11-14T20:54:40Z
dc.date.available2014-05-14T11:05:54Z
dc.date.issued2013-11-14
dc.date.submitted2013en_US
dc.identifier.otherSip_washington_0250E_11827.pdfen_US
dc.identifier.urihttp://hdl.handle.net/1773/24182
dc.descriptionThesis (Ph.D.)--University of Washington, 2013en_US
dc.description.abstractThe sensing of chemical gradients plays an important role in the guidance of cells for tissue development, migration of cells in the immune system, and human disease. We have developed a microfluidic transwell insert for generating concentration gradients in a user-friendly and modular format that is compatible with conventional cell cultures. The device is simply inserted into a standard 6-well plate were it hangs self-supported at a distance of 250 µm above the cell culture surface. The core aspect of our design is the delivery of small microflows through a track-etched membrane into the cell culture well. The microfluidic transwell can deliver quantifiable, large-area gradients to a large number of cells or tissue explants with extremely low fluid shear stress. Finite-element modeling was used to describe porous membrane flow and molecular transport for predicting gradients generated by the device. Transwell microfluidic gradients were applied to a large population of neutrophil-like cells to demonstrate the direct observation of chemotaxis. Additionally, the modular design and low fluid shear stress made it possible to apply gradients to sensitive neuronal explant cultures. With a simplified interfacing scheme and well-defined, quantifiable gradients, the microfluidic transwell device has potential for broad applications to gradient sensing biology.en_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.rightsCopyright is held by the individual authors.en_US
dc.subjectBiological gradients; BioMEMS; Cell migration; Chemotaxis; Microfluidics; Porous membranesen_US
dc.subject.otherBiomedical engineeringen_US
dc.subject.otherCellular biologyen_US
dc.subject.otherMechanical engineeringen_US
dc.subject.otherbioengineeringen_US
dc.titlePorous membranes for interfacing microfluidics with cell culturesen_US
dc.typeThesisen_US
dc.embargo.termsDelay release for 6 months -- then make Open Accessen_US


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