Abstract
Given the prevalence of antibiotic resistance, there is an increasing need to develop alternative approaches to managing pathogenic bacteria. In this work, we explore the feasibility of modulating the expression of various cellular systems in Vibrio cholerae using engineered regulatory sRNAs delivered into cells via DNA conjugation. These sRNAs are based on regulatory sRNAs found in V. cholerae and exploit its native regulatory machinery. By delivering these sRNAs conjugatively along with a real-time marker for DNA transfer, we found that complete knockdown of a targeted cellular system could be achieved within one cell division cycle after sRNA gene delivery. These results indicate that conjugative delivery of engineered regulatory sRNAs is a rapid and robust way of precisely targeting V. cholerae.
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