Cited by 151Nanoplatforms for cancer theranosticsLuminescence and Fluorescent MaterialsMolecular Sensors and Ion Detection

Molecular Engineered Squaraine Nanoprobe for NIR-II/Photoacoustic Imaging and Photothermal Therapy of Metastatic Breast Cancer

Yao, Defan, Wang, Yanshu, Zou, Rongfeng, Bian, Kexin, Liu, Pei, Shen, Shuzhan, Yang, Weitao, Zhang, Bingbo +1 more·2020·ACS Applied Materials & Interfaces

Abstract

Various squaraine dyes have been developed for biological imaging. Nevertheless, squaraine dyes with emission in the second window (NIR-II, 1000-1700 nm) have few reports largely due to the short of a simple and universal design strategy. In this contribution, molecular engineering strategy is explored to develop squaraine dyes with NIR-II emission. First, NIR-I squaraine dye SQ2 is constructed by the ethyl-grafted 1,8-naphtholactam as donor units and square acid as acceptor unit in a donor-acceptor-donor (D-A-D) structure. To red-shift the fluorescence emission into NIR-II window, malonitrile, as a forceful electron-withdrawing group, is introduced to strengthen square acid acceptor. As a result, the fluorescence spectrum of acceptor-engineered squaraine dye SQ1 exhibits a significant red-shift into NIR-II window. To translate NIR-II fluorophores SQ1 into effective theranostic agents, fibronectin-targeting SQ1 nanoprobe was constructed and showed excellent NIR-II imaging performance in angiography and tumor imaging, including lung metastatic foci in deep tissue. Furthermore, SQ1 nanoprobe can be used for photoacoustic imaging and photothermal ablation of tumors. This research demonstrates that the donor-acceptor engineering strategy is feasible and effective to develop NIR-II squaraine dyes.

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Crossref · 10.1021/acsami.9b20147

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Authors
Yao, D., Wang, Y., Zou, R., Bian, K., Liu, P., Shen, S., Yang, W., Zhang, B., & Wang, D.
Affiliations
  • Shanghai Jiao Tong University (CN)
  • AlbaNova (SE)
  • Tongji University (CN)
Corresponding author
  • Zhang, Bingbo
  • Wang, Dengbin
Venue
ACS Applied Materials & Interfaces
Published
2020-01-03
Volume
12
Issue
4
Pages
4276-4284
ISSN
  • 1944-8244 (ISSN-L)
  • 1944-8252
OpenAlex
W2997170556
Cited by
151
References
56
Citations by year
2026: 12 · 2025: 11 · 2024: 30 · 2023: 23 · 2022: 29 · 2021: 29 · 2020: 17
FWCI
7.69
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Applied Materials & Interfaces (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Ministry of Science and Technology of the People's Republic of China (2017YFC0109003)
  • Shanghai Hospital Development Center (SHDC 22015022)
  • Science and Technology Commission of Shanghai Municipality (18YF1415600)
  • National Natural Science Foundation of China (81371621, 81571742, 81871399, 81901870, 81922035)
  • State Key laboratory of Molecular Engineering of Polymers, Fudan University (K2019-28)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Nanoplatforms for cancer theranostics
  • Physical Sciences › Materials Science › Materials Chemistry › Luminescence and Fluorescent Materials
  • Physical Sciences › Chemistry › Spectroscopy › Molecular Sensors and Ion Detection
Keywords
squaraine dyes, NIR-II fluorescence, donor-acceptor-donor structure, molecular engineering, photoacoustic imaging, photothermal therapy, metastatic breast cancer, lung metastasis, nanoprobes, angiography, deep tissue imaging, theranostics
MeSH terms
Animals, Breast Neoplasms, Cyclobutanes, Humans, Hyperthermia, Induced, Phenols, Phototherapy, Xenograft Model Antitumor Assays, Mice, Nanoparticles, Photoacoustic Techniques, MCF-7 Cells

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