"Exploiting Light To Probe Biological Processes " by Madeline Denison

Access Type

Open Access Dissertation

Date of Award

January 2024

Degree Type

Dissertation

Degree Name

Ph.D.

Department

Chemistry

First Advisor

Jeremy J. Kodanko

Abstract

Metal complexes have many advantages as biochemical tools due to their rich photophysical properties and unique geometry. Metal-based complexes are commonly reported as emissive probes or photoactivatable biological agents. Long emission lifetimes of metal complexes allow for the use of lifetime gating which eliminates autofluorescence found in assays, a distinct advantage over short-lived organic fluorophores. This work utilizes this powerful technique to generate reversible, emissive probes for monitoring CYP3A4 active site occupancy. In addition to the emissive properties of metals, metals can also be used as photodynamic therapy (PDT) and photochemotherapy (PCT) agents. These light-activated strategies provide important spatiotemporal control which grants localized treatment and elimination of off-target side effects found in conventional therapeutics. This work represents advances in the PCT/PDT field to shift to use of green-light activated agents, opposed to commonly found blue-light agents associated with poor tissue penetration and light toxicity. Together, this collection of work demonstrates the superiority of the photophysical properties of metal complexes and its promising biological applications

Included in

Chemistry Commons

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