Tabor, Jeffrey J2019-05-162019-05-162019-052019-04-18May 2019Sexton, John Thomas. "Multiplexing cell-cell communication." (2019) Diss., Rice University. <a href="https://hdl.handle.net/1911/105425">https://hdl.handle.net/1911/105425</a>.https://hdl.handle.net/1911/105425The engineering of advanced multicellular behaviors, such as the programmed growth of biofilms or tissues, requires cells to communicate multiple aspects of physiological information. Unfortunately, few cell-cell communication systems have been developed for synthetic biology. In this work, I engineer a genetically-encoded channel selector device that enables a single communication system to transmit two separate intercellular conversations. My design comprises multiplexer and demultiplexer sub-circuits constructed from a total of 12 CRISPRi-based transcriptional logic gates, an acyl homoserine lactone-based communication module, and three inducible promoters that enable small molecule control over the conversations. Experimentally-parameterized mathematical models of the sub-components predict the steady state and dynamical performance of the full system. Multiplexed cell-cell communication has applications in synthetic development, metabolic engineering, and other areas requiring the coordination of multiple pathways amongst a community of cells.application/pdfengCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.Cell-cell communicationtranscriptional logic gatessynthetic biologyThesis2019-05-16