Exploiting CRISPR-Cas nucleases to produce sequence-specific antimicrobials.
Exploiting CRISPR-Cas nucleases to produce sequence-specific antimicrobials.
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DOI:
10.1038/nbt.3043
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发表时间:
2014-11
影响因子:
46.9
通讯作者:
Marraffini, Luciano A.
中科院分区:
文献类型:
--
作者:
Bikard, David;Euler, Chad W.;Jiang, Wenyan;Nussenzweig, Philip M.;Goldberg, Gregory W.;Duportet, Xavier;Fischetti, Vincent A.;Marraffini, Luciano A.
Antibiotics target conserved bacterial cellular pathways or growth functions and therefore cannot selectively kill specific members of a complex microbial population. Here, we develop programmable, sequence-specific antimicrobials using the RNA-guided nuclease Cas9 delivered by a bacteriophage. We show that Cas9 re-programmed to target virulence genes kills virulent, but not avirulent, Staphylococcus aureus. Re-programming the nuclease to target antibiotic resistance genes destroys staphylococcal plasmids that harbor antibiotic resistance genes and immunizes avirulent staphylococci to prevent the spread of plasmid-borne resistance genes. We also demonstrate the approach in vivo, showing its efficacy against S. aureus in a mouse skin colonization model. This new technology creates opportunities to manipulate complex bacterial populations in a sequence-specific manner.
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