Cited by 59Optical Imaging and Spectroscopy TechniquesNanoplatforms for cancer theranosticsLuminescence and Fluorescent Materials

Shortwave-Infrared Fluorescent Molecular Imaging Probes Based on π-Conjugation Extended Indocyanine Green

Swamy, Mahadeva M. M., Murai, Yuta, Monde, Kenji, Tsuboi, Setsuko, Jin, Takashi·2021·Bioconjugate Chemistry

Abstract

Recently, shortwave-infrared (SWIR) fluorescence imaging for the optical diagnostics of diseases has attracted much attention as a new noninvasive imaging modality. For this application, the development of SWIR molecular imaging probes with high biocompatibility is crucial. Although many types of biocompatible SWIR fluorescent probes based on organic dyes have been reported, there are no SWIR-emitting molecular imaging probes that can be used for the detection of specific biomolecules in vivo. To apply SWIR-emitting molecular imaging probes to biomedical fields, we developed a biocompatible SWIR fluorescent dye based on π-conjugation extended indocyanine green (ICG), where ICG is the only approved near-infrared dye by the US Food and Drug Administration (FDA) for use in the clinic. Using the π-conjugation extended ICG, we prepared SWIR molecular imaging probes that can be used for in vivo tumor imaging. Herein, we demonstrate noninvasive SWIR fluorescence imaging of human epidermal growth factor receptor 2 (HER2)-positive and epidermal growth factor receptor (EGFR)-positive breast tumors using π-conjugation extended ICG and monoclonal antibody conjugates. The presented π-conjugation extended ICG analog probes will be a breakthrough to apply SWIR fluorescence imaging in biomedical fields.

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Crossref · 10.1021/acs.bioconjchem.1c00253

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Authors
Swamy, M. M. M., Murai, Y., Monde, K., Tsuboi, S., & Jin, T.
Affiliations
  • RIKEN (JP)
  • Hokkaido University (JP)
Corresponding author
Jin, Takashi
Venue
Bioconjugate Chemistry
Published
2021-07-26
Volume
32
Issue
8
Pages
1541-1547
ISSN
  • 1043-1802 (ISSN-L)
  • 1520-4812
OpenAlex
W3183323408
Cited by
59
References
64
Citations by year
2026: 12 · 2025: 13 · 2024: 12 · 2023: 11 · 2022: 11
FWCI
4.49
Type
journal article
Language
en
Open access
closed
Locations
  • Bioconjugate Chemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Uehara Memorial Foundation
  • Ministry of Education, Science, Sport, and Culture of Japan (Grant-in-Aid for Scientific Research 19H04459 to T)
  • Photo-excitonix project at Hokkaido University
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Optical Imaging and Spectroscopy Techniques
  • Physical Sciences › Engineering › Biomedical Engineering › Nanoplatforms for cancer theranostics
  • Physical Sciences › Materials Science › Materials Chemistry › Luminescence and Fluorescent Materials
Keywords
indocyanine green, extended π-conjugation, molecular imaging probes, tumor imaging, HER2-positive breast cancer, monoclonal antibody conjugates, non-invasive optical imaging
MeSH terms
Breast Neoplasms, Female, Fluorescent Dyes, Humans, Indocyanine Green, Erb-b2 Receptor Tyrosine Kinases, Receptor, ErbB-2, Cell Line, Tumor, Molecular Imaging, Optical Imaging, ErbB Receptors

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