Rapid production of novel pre-MicroRNA agent hsa-mir-27b in escherichia coli using recombinant RNA technology for functional studies in mammalian cells

Mei Mei Li, Wei Peng Wang, Wen Juan Wu, Min Huang, Aiming Yu

Research output: Contribution to journalArticle

25 Scopus citations


Noncoding microRNAs (miRNAs or miRs) have been revealed as critical epigenetic factors in the regulation of various cellular processes, including drug metabolism and disposition. However, research on miRNA functions is limited to the use of synthetic RNA and recombinant DNA agents. Herein, we show that novel premiRNA-27b (miR-27b) agents can be biosynthesized in Escherichia coli using recombinant RNA technology, and recombinant transfer RNA (tRNA)/mir-27b chimera was readily purified to a high degree of homogeneity (>95%) using anion-exchange fast protein liquid chromatography. The tRNA-fusion miR-27b was revealed to be processed to mature miRNA miR-27b in human carcinoma LS-180 cells in a dose- and time-dependent manner. Moreover, recombinant tRNA/miR-27b agents were biologically active in reducing the mRNA and protein expression levels of cytochrome P450 3A4 (CYP3A4), which consequently led to lower midazolam 1′-hydroxylase activity. These findings demonstrate that pre-miRNA agents can be produced by recombinant RNA technology for functional studies. Copyright

Original languageEnglish (US)
Pages (from-to)1791-1795
Number of pages5
JournalDrug Metabolism and Disposition
Issue number11
StatePublished - Nov 1 2014


ASJC Scopus subject areas

  • Pharmacology
  • Pharmaceutical Science

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