A real-time near-infrared fluorescence imaging method for the detection of oral cancers in mice using an indocyanine green–labeled podoplanin antibody

Akihiro Ito, Mitsuhiko Ohta, Yukinari Kato, Shunko Inada, Toshio Kato, Susumu Nakata, Yasushi Yatabe, Mitsuo Goto, Norio Kaneda, Kenichi Kurita, Hayao Nakanishi, Kenji Yoshida

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Podoplanin is distinctively overexpressed in oral squamous cell carcinoma than oral benign neoplasms and plays a crucial role in the pathogenesis and metastasis of oral squamous cell carcinoma but its diagnostic application is quite limited. Here, we report a new near-infrared fluorescence imaging method using an indocyanine green (ICG)–labeled anti-podoplanin antibody and a desktop/a handheld ICG detection device for the visualization of oral squamous cell carcinoma–xenografted tumors in nude mice. Both near-infrared imaging methods using a desktop (in vivo imaging system: IVIS) and a handheld device (photodynamic eye: PDE) successfully detected oral squamous cell carcinoma tumors in nude mice in a podoplanin expression–dependent manner with comparable sensitivity. Of these 2 devices, only near-infrared imaging methods using a handheld device visualized oral squamous cell carcinoma xenografts in mice in real time. Furthermore, near-infrared imaging methods using the handheld device (PDE) could detect smaller podoplanin-positive oral squamous cell carcinoma tumors than a non-near-infrared, autofluorescence-based imaging method. Based on these results, a near-infrared imaging method using an ICG-labeled anti-podoplanin antibody and a handheld detection device (PDE) allows the sensitive, semiquantitative, and real-time imaging of oral squamous cell carcinoma tumors and therefore represents a useful tool for the detection and subsequent monitoring of malignant oral neoplasms in both preclinical and some clinical settings.

Original languageEnglish
JournalTechnology in Cancer Research and Treatment
Volume17
DOIs
Publication statusPublished - 2018 Jan

Keywords

  • Indocyanine green
  • NZ-1 antibody
  • Near-infrared fluorescence imaging
  • Oral squamous cell carcinoma
  • Podoplanin

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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