The non-coding RNA of the multidrug resistance-linked vault particle encodes multiple regulatory small RNAs.

Research output: Contribution to journalArticle


Vault particles are conserved organelles implicated in multidrug resistance and intracellular transport. They contain three different proteins and non-coding vault RNAs (vRNAs). Here we show that human vRNAs produce several small RNAs (svRNAs) by mechanisms different from those in the canonical microRNA (miRNA) pathway. At least one of these svRNAs, svRNAb, associates with Argonaute proteins to guide sequence-specific cleavage and regulate gene expression similarly to miRNAs. We demonstrate that svRNAb downregulates CYP3A4, a key enzyme in drug metabolism. Our findings expand the repertoire of small regulatory RNAs and assign, for the first time, a function to vRNAs that may help explain the association between vault particles and drug resistance.


Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Cancer and Oncology
  • Microbiology in the medical area
Original languageEnglish
Pages (from-to)1268-1271
JournalNature Cell Biology
Issue number10
Publication statusPublished - 2009
Publication categoryResearch

Related research output

Helena Persson, 2009, Department of Oncology, Clinical Sciences, Lund University. 130 p.

Research output: ThesisDoctoral Thesis (compilation)

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