Fluorescent indicator displacement assay of ligands targeting 10 microRNA precursors

Asako Murata, Yasue Harada, Takeo Fukuzumi, Kazuhiko Nakatani

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


Fluorescent indicator displacement (FID) assay is a rapid and convenient assay for identifying new ligands that bind to the target molecules. In our previous studies, we have shown that a series of 2,7-diaminoalkoxy xanthone and thioxanthone derivatives can be used as fluorescent indicators for detecting the interaction between RNA and a ligand. The xanthone and thioxanthone fluorochromes showed efficient fluorescence quenching upon binding to target RNA. Subsequent displacement of the bound-fluorochrome with a ligand that binds more strongly to the target RNA led to the recovery of the fluorescence by releasing the fluorochrome from RNA. Here we report a pilot screening of a chemical library that contains 9600 structurally diverse compounds for molecules that bind to a specific miRNA precursor using the FID assay.

Original languageEnglish
Pages (from-to)7101-7106
Number of pages6
JournalBioorganic and Medicinal Chemistry
Issue number22
Publication statusPublished - Nov 15 2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Medicine
  • Molecular Biology
  • Pharmaceutical Science
  • Drug Discovery
  • Clinical Biochemistry
  • Organic Chemistry


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