Engineered K1F bacteriophages kill intracellular Escherichia coli K1 in human epithelial cells.

Engineered K1F bacteriophages kill intracellular Escherichia coli K1 in human epithelial cells.
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DOI:
10.1038/s41598-018-35859-6
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发表时间:
2018-12-03
期刊:
影响因子:
4.6
通讯作者:
Sagona AP
Sagona AP
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Møller-Olsen C;Ho SFS;Shukla RD;Feher T;Sagona AP

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Bacterial infections can be treated with bacteriophages that show great specificity towards their bacterial host and can be genetically modified for different applications. However, whether and how bacteriophages can kill intracellular bacteria in human cells remains elusive. Here, using CRISPR/Cas selection, we have engineered a fluorescent bacteriophage specific for E. coli K1, a nosocomial pathogen responsible for urinary tract infections, neonatal meningitis and sepsis. By confocal and live microscopy, we show that engineered bacteriophages K1F-GFP and E. coli EV36-RFP bacteria displaying the K1 capsule, enter human cells via phagocytosis. Importantly, we show that bacteriophage K1F-GFP efficiently kills intracellular E. coli EV36-RFP in T24 human urinary bladder epithelial cells. Finally, we provide evidence that bacteria and bacteriophages are degraded by LC3-associated phagocytosis and xenophagy.
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