Weisman, R. Bruce2018-12-032018-12-032007Cherukuri, Paul. "Biomedical studies of single -walled carbon nanotubes using near-infrared fluorescence." (2007) Diss., Rice University. <a href="https://hdl.handle.net/1911/103643">https://hdl.handle.net/1911/103643</a>.https://hdl.handle.net/1911/103643Experimental studies will be described aimed at providing a scientific foundation for the use of single-walled carbon nanotubes (SWNTs) in biomedical applications. SWNTs have been found to be a unique class of nanoscale near-infrared (NIR) fluorescence contrast agents that also exhibit novel therapeutic capabilities. In our first study, we found that cultured macrophage cells readily engulf individual nanotubes. The rate of cellular uptake of SWNTs was measured by monitoring their characteristic NIR emissions. Furthermore, we also found that the NIR emissions of individual SWNTs are persistent in both the extracellular and intracellular environment of macrophage cells. Next, we extended our study from simple in vitro systems to the more complex in vivo mammalian animal model. By quantitatively tracking individual SWNTs, we have determined the rabbit's pharmacokinetic SWNT profile without the aid of additional fluorophores or radiolabels. As a final therapeutic application, we have developed SWNTs as novel pharmaceutical agents that efficiently carry siRNA molecules into cancer cells in order to induce targeted apoptosis of specific tumors.132 ppengCopyright 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.Pharmacy sciencesPhysical chemistryCondensed matter physicsPure sciencesApoptosisNanotubes Single-walled carbon nanotubessiRNAThesis304801046THESIS CHEM. 2008 CHERUKURI