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J Clin Microbiol ; 59(7): e0231320, 2021 06 18.
Artigo em Inglês | MEDLINE | ID: mdl-33910962

RESUMO

In vivo diagnostic imaging of bacterial infections is currently reliant on targeting their metabolic pathways, an ineffective method to identify microbial species with low metabolic activity. Here, we establish HS-198 as a small-molecule fluorescent conjugate that selectively targets the highly conserved bacterial protein HtpG (high-temperature protein G), within Borrelia burgdorferi, the bacterium responsible for Lyme disease. We describe the use of HS-198 to target morphologic forms of B. burgdorferi in both the logarithmic growth phase and the metabolically dormant stationary phase as well as in inactivated spirochetes. Furthermore, in a murine infection model, systemically injected HS-198 identified B. burgdorferi as revealed by imaging in postnecropsy tissue sections. These findings demonstrate how small-molecule probes directed at conserved bacterial protein targets can function to identify the microbe using noninvasive imaging and potentially as scaffolds to deliver antimicrobial agents to the pathogen.


Assuntos
Borrelia burgdorferi , Doença de Lyme , Animais , Proteínas de Bactérias/genética , Diagnóstico por Imagem , Humanos , Doença de Lyme/diagnóstico , Camundongos
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