Short hairpin rnas of designed sequences can be extracellularly produced by the marine bacterium rhodovulum sulfidophilum

Nobuyoshi Nagao, Hiromichi Suzuki, Rika Numano, So Umekage, Yo Kikuchi

Research output: Contribution to journalArticle

8 Citations (Scopus)


Previously, we proposed a new method for production of RNA aptamers using the marine bacterium Rhodovulum sulfidophilum. A streptavidin RNA aptamer (an RNA which binds to streptavidin) was extracellularly produced by this bacterium containing engineered plasmid. The aptamer had full biological function. As a next step we attempted to produce another functional RNA, short hairpin RNAs (shRNAs) using this bacterial system. We have designed two types of shRNAs targeted to the luciferase gene. Here we report that shRNAs are successfully produced extracellularly by this system. Even if the shRNA has a long stem-loop structure which is thought to interfere with transcription in bacterial cells, the yield of the shRNA is almost the same as that of the streptavidin RNA aptamer. During the course of these experiments, we also found a new type of RNA processing for the double-stranded region of the shRNA.

Original languageEnglish
Pages (from-to)222-226
Number of pages5
JournalJournal of General and Applied Microbiology
Issue number6
Publication statusPublished - 2015 Jan 16
Externally publishedYes



  • Extracellular RNA
  • Marine Bacteria
  • Rhodovulum sulfidophilum
  • RNA medicine
  • Short hairpin RNA

ASJC Scopus subject areas

  • Applied Microbiology and Biotechnology
  • Microbiology

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