Magnetically Promoted Rapid Immunofluorescence Staining for Frozen Tissue Sections

Tatsuya Onishi, Sachiko Matsuda, Yuki Nakamura, Junko Kuramoto, Akinori Tsuruma, Satoshi Sakamoto, Shunichi Suzuki, Daiichiro Fuchimoto, Akira Onishi, Shinichi Chikaki, Miki Kaneko, Akihiro Kuwahata, Masaki Sekino, Hiroshi Yasuno, Naohiro Hanyu, Tomoko Kurita, Hiroyuki Takei, Takashi Sakatani, Kanae Taruno, Seigo NakamuraTetsu Hayashida, Hiromitsu Jinno, Moriaki Kusakabe, Hiroshi Handa, Kaori Kameyama, Yuko Kitagawa

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Current immunohistochemistry methods for diagnosing abnormal cells, such as cancer cells, require multiple steps and can be relatively slow compared with intraoperative frozen hematoxylin and eosin staining, and are therefore rarely used for intraoperative examination. Thus, there is a need for novel rapid detection methods. We previously demonstrated that functionalized fluorescent ferrite beads (FF beads) magnetically promoted rapid immunoreactions. The aim of this study was to improve the magnetically promoted rapid immunoreaction method using antibody-coated FF beads and a magnet subjected to a magnetic field. Using frozen sections of xenograft samples of A431 human epidermoid cancer cells that express high levels of epidermal growth factor receptor (EGFR) and anti-EGFR antibody-coated FF beads, we reduced the magnetically promoted immunohistochemistry procedure to a 1-min reaction and 1-min wash. We also determined the optimum magnetic force for the antibody reaction (from 7.79 × 10−15 N to 3.35 × 10−15 N) and washing (4.78 × 10−16 N), which are important steps in this technique. Furthermore, we stained paraffin-embedded tissue arrays and frozen sections of metastatic breast cancer lymph nodes with anti-pan-cytokeratin antibody-coated FF beads to validate the utility of this system in clinical specimens. Under optimal conditions, this ultra-rapid immunostaining method may provide an ancillary method for pathological diagnosis during surgery. (J Histochem Cytochem 58:XXX–XXX, 2010).

Original languageEnglish
Pages (from-to)575-587
Number of pages13
JournalJournal of Histochemistry and Cytochemistry
Issue number8
Publication statusPublished - 2019 Aug 1


  • cancer
  • fluorescent ferrite beads
  • immunostaining
  • intraoperative diagnosis
  • magnetic field

ASJC Scopus subject areas

  • Anatomy
  • Histology


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