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Photoactivated antibiotics to treat intracellular infection of bacteria.

ABSTRACT: Antibiotic resistance combined with pathogen internalization leads to debilitating infections. Here we test novel superoxide producing, stimuli-activated quantum dots (QDs), to treat an intracellular infection of Salmonella enterica serovar Typhimurium in an osteoblast precursor cell line. These QDs are precisely tuned to reduce dissolved oxygen to superoxide and kill bacteria upon stimulation (e.g., light). We show QDs provide tunable clearance at various multiplicities of infection and limited host cell toxicity by modulating their concentration and stimuli intensity, proving the efficacy of superoxide producing QDs for intracellular infection treatment and establishing a framework for further testing in different infection models.

SUBMITTER: Eller KA

PROVIDER: S-EPMC10044578 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature

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Photoactivated antibiotics to treat intracellular infection of bacteria.

Eller Kristen A KA Stamo Dana F DF McCollum Colleen R CR Campos Jocelyn K JK Levy Max M Nagpal Prashant P Chatterjee Anushree A

Nanoscale advances 20230307 7

Antibiotic resistance combined with pathogen internalization leads to debilitating infections. Here we test novel superoxide producing, stimuli-activated quantum dots (QDs), to treat an intracellular infection of <i>Salmonella enterica</i> serovar Typhimurium in an osteoblast precursor cell line. These QDs are precisely tuned to reduce dissolved oxygen to superoxide and kill bacteria upon stimulation (<i>e.g.</i>, light). We show QDs provide tunable clearance at various multiplicities of infecti ...[more]

PMID: 36998655

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