PNA-tagged peptide microarrays for ratiometric activity detection of cellular protein kinases

Hiromu Ikeda, Yoshihiro Yayama, Akito Hata, Jumpei Kamimoto, Tatsuhiro Yamamoto, Takeshi Mori, Yoshiki Katayama

Research output: Contribution to journalArticle


Peptide microarrays can be used to measure the activity of multiple protein kinases (PKs), which can be used to elucidate kinomics for drug discovery and diagnosis. Here we demonstrated a new microarray for ratiometric detection of the activity of PKs using peptide nucleic acid (PNA)-tagged peptides labeled with two different fluorophores, Cy3 and Cy5. We successfully detected cellular PK activities based on ratiometry, and applied the system for evaluation of an inhibitory drug.

Original languageEnglish
Pages (from-to)631-635
Number of pages5
Journalanalytical sciences
Issue number6
Publication statusPublished - 2014


All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

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