Sensing and sensitizer activation by biological thiols and 1,2-dioxetanes based chemiluminescence probes

dc.contributor.advisorAkkaya, Engin U.
dc.contributor.authorTuran, İlke Şimşek
dc.departmentGraduate Program in Materials Science and Nanotechnologyen_US
dc.descriptionAnkara : The Materials Science and Nanotechnology Program of the Graduate School of Engineering and Science of Bilkent University, 2014.en_US
dc.descriptionThesis (Ph. D.) -- Bilkent University, 2014.en_US
dc.descriptionIncludes bibliographical references leaves 183-192.en_US
dc.description.abstractBiologically important biothiols like Cystein (Cys), Homocystein (Hcy) and Glutathione (GSH) are vital for the maintenance of cellular redox status and alterations in their levels is linked to a number of severe diseases such as AIDS, cancer and Alzheimer‟s therefore the design and synthesis of nitroolefin functionalized bodipy dyes responding to biological thiols by both absorbance and emission changes have been accomplished. Through the incorporation of hydrophilic groups, bright signaling of biothiols in the longer wavelength region of the visible spectrum is deemed to operate in biological environment. With this knowledge, bioconjugation of the nitroolefin functionalized dyes with thiol groups like those belonging to cysteine residues on proteins has been proved via large spectral changes and targeted to visualize dynamics of proteins, cell-cell interactions, mechanisms of life cycles of proteins. Hence, the result suggests that nitroolefin functionalization of BODIPY dyes is a promising way to sense biological thiols and hence labeling proteins having thiol groups. Since GSH plays vital roles in the oxidative stress exists within the cells and thus, high concentration of it is the indication of cancer development, design and synthesis of cancer related parameter based activation of bodipy based photosensitizers have been achieved to enhance spatiotemporal selectivity in photonic sensitization of dissolved molecular oxygen and thus, improves the potential and practice of photodynamic therapy and their effectiveness are validated by cell culture studies. Chemiluminescence in principle can provide a rapid, qualitative and/or quantitative test for analytes of interest; because of that synthesis of novel probes for the sensing of biologically important (fluoride) anion have been devised to combine the power of chemiluminescence and self immolative amplifiers which offers a chemical avenue for enhancing the signal produced in response to a given analyte. Through the development of chemiluminogenic perspective for sensing of palladium ions, rapid and selective response of probe to palladium ions with regardless of their charge in aqueous environment have been accomplished. Considering the convenience of the methods and substantial results, we are confident that other probes combining the power of chemiluminescence will emerge.en_US
dc.description.statementofresponsibilityTuran, İlke Şimşeken_US
dc.format.extentxxi, 249 leaves, illustrations, chartsen_US
dc.publisherBilkent Universityen_US
dc.subjectBiological Thiolsen_US
dc.subjectProtein Labelingen_US
dc.subjectPhotodynamic Therapyen_US
dc.subject.lccQZ267 .T87 2014en_US
dc.subject.lcshFluorescence microscopy.en_US
dc.titleSensing and sensitizer activation by biological thiols and 1,2-dioxetanes based chemiluminescence probesen_US
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