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Methods Mol Biol ; 2852: 171-179, 2025.
Artigo em Inglês | MEDLINE | ID: mdl-39235744

RESUMO

Studying host-pathogen interactions is essential for understanding infectious diseases and developing possible treatments, especially for priority pathogens with increased virulence and antibiotic resistance, such as Klebsiella pneumoniae. Over time, this subject has been approached from different perspectives, often using mammal host models and invasive endpoint measurements (e.g., sacrifice and organ extraction). However, taking advantage of technological advances, it is now possible to follow the infective process by noninvasive visualization in real time, using optically amenable surrogate hosts. In this line, this chapter describes a live-cell imaging approach to monitor the interaction of K. pneumoniae and potentially other bacterial pathogens with zebrafish larvae in vivo. This methodology is based on the microinjection of fluorescent bacteria into the otic vesicle, followed by time-lapse observation by automated fluorescence microscopy with environmental control, monitoring the dynamics of immune cell recruitment, bacterial load, and larvae survival.


Assuntos
Interações Hospedeiro-Patógeno , Infecções por Klebsiella , Klebsiella pneumoniae , Larva , Microinjeções , Microscopia de Fluorescência , Peixe-Zebra , Animais , Peixe-Zebra/microbiologia , Klebsiella pneumoniae/imunologia , Microinjeções/métodos , Larva/microbiologia , Larva/imunologia , Microscopia de Fluorescência/métodos , Interações Hospedeiro-Patógeno/imunologia , Infecções por Klebsiella/microbiologia , Infecções por Klebsiella/imunologia , Modelos Animais de Doenças
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