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Title: Polymethine Thiopyrylium Fluorophores with Absorption beyond 1000 nm for Biological Imaging in the Second Near-infrared Sub-window

Journal Article · · Journal of Medicinal Chemistry
 [1];  [2];  [2];  [3];  [3];  [4];  [2];  [3];  [5]
  1. Wuhan Univ. School of Pharmaceutical Sciences, Wuhan (China); Stanford Univ., Stanford, CA (United States)
  2. Wuhan Univ. School of Pharmaceutical Sciences, Wuhan (China)
  3. Stanford Univ., Stanford, CA (United States)
  4. Tibet Univ., Lasa (China)
  5. Wuhan Univ. School of Pharmaceutical Sciences, Wuhan (China); Tibet Univ., Lasa (China); Shenzhen Institute of Wuhan Univ., Shenzhen (China)

Small-molecule fluorescence imaging in the second near-infrared (NIR-II, 1000-1700 nm) window has gained increasing interest in clinical application. Till now, very few studies have been exploited in the small-molecule fluorophores with both excitation and emission in the NIR-II window. Inspired by indocyanine green structure, a series of polymethine dyes with both absorption and emission in NIR-II window have been developed for NIR-II imaging, providing the feasibility to directly compare optical imaging in NIR-IIa (1300-1400 nm) sub-window under 1064 nm excitation with that in NIR-II window under 808 nm excitation. The signal-background ratio (SBR) and tumor to normal tissue ratio (T/NT) achieved great improvement under 1064 nm excitation in the imaging of mouse blood pool and U87 glioma tumors. Furthermore, our study not only introduces a broadband emission fluorophore for both NIR-II and NIR-IIa imaging, but also reveals the advantages of NIR-II excitation over NIR-I in in vivo imaging.

Research Organization:
The Leland Stanford Junior Univ., Palo Alto, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0008397
OSTI ID:
1485259
Journal Information:
Journal of Medicinal Chemistry, Vol. 62, Issue 4; ISSN 0022-2623
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 114 works
Citation information provided by
Web of Science

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Cited By (18)

Quaternary Ammonium Salt Based NIR‐II Probes for In Vivo Imaging journal May 2019
Deciphering of cerebrovasculatures via ICG-assisted NIR-II fluorescence microscopy journal January 2019
A novel near-infrared fluorescent light-up probe for tumor imaging and drug-induced liver injury detection journal January 2019
A bright NIR-II fluorescent probe for breast carcinoma imaging and image-guided surgery journal January 2019
Stable, Wavelength‐Tunable Fluorescent Dyes in the NIR‐II Region for In Vivo High‐Contrast Bioimaging and Multiplexed Biosensing journal May 2019
Mn-Loaded apolactoferrin dots for in vivo MRI and NIR-II cancer imaging journal January 2019
An IR820 Dye–Protein Complex for Second Near‐Infrared Window and Photoacoustic Imaging journal December 2019
Specific Small‐Molecule NIR‐II Fluorescence Imaging of Osteosarcoma and Lung Metastasis journal October 2019
Advanced Nanotechnology Leading the Way to Multimodal Imaging‐Guided Precision Surgical Therapy journal September 2019
Produktive Modifikationen von Cyaninfarbstoff‐π‐Netzwerken journal May 2019
Improving Quantum Yield of a NIR‐II Dye by Phenylazo Group journal January 2020
A Rationally Designed Semiconducting Polymer Brush for NIR‐II Imaging‐Guided Light‐Triggered Remote Control of CRISPR/Cas9 Genome Editing journal April 2019
Monitoring the Real‐Time Circulatory System‐Related Physiological and Pathological Processes In Vivo Using a Multifunctional NIR‐II Probe journal November 2019
Productive Manipulation of Cyanine Dye π‐Networks journal May 2019
Molecular Engineering of an Organic NIR‐II Fluorophore with Aggregation‐Induced Emission Characteristics for In Vivo Imaging journal March 2019
Molecular Imaging in the Second Near‐Infrared Window journal April 2019
Stable, Wavelength‐Tunable Fluorescent Dyes in the NIR‐II Region for In Vivo High‐Contrast Bioimaging and Multiplexed Biosensing journal June 2019
Extrahepatic cholangiography in near-infrared II window with the clinically approved fluorescence agent indocyanine green: a promising imaging technology for intraoperative diagnosis journal January 2020

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