Related Experiment Video
Updated: Jun 13, 2025
13:21
Affordable Oxygen Microscopy-Assisted Biofabrication of Multicellular Spheroids
Published on: April 6, 2022
3.3K
Sensitive Cancer Hypoxia Detection via a Dual-Locking Fluorescence Response System Using Two Hypoxia Indicators
Shin A Yoon1, So Jin Hong1, Jiyou Han2
1Department of Chemistry, Chung-Ang University, Seoul 06974, Korea.
Analytical Chemistry
|September 11, 2024
Summary
Researchers developed a novel dual-detection fluorescent probe, DNNC, for accurately detecting cancer hypoxia. This probe simultaneously senses nitroreductases and hydrogen sulfide, improving cancer diagnosis and therapy.
Area of Science:
- Biomedical Engineering
- Molecular Imaging
- Cancer Biology
Background:
- Hypoxia is a critical factor in cancer progression, influencing tumor growth, metastasis, and treatment resistance.
- Current hypoxia detection methods are limited, often relying on single-detection systems, hindering comprehensive analysis.
- Accurate detection of tumor hypoxia is essential for effective cancer diagnosis and therapeutic strategies.
Purpose of the Study:
- To develop a novel dual-lock-based fluorescent probe for sensitive and selective detection of cancer hypoxia.
- To investigate the biocompatibility and photophysical properties of the developed probe for intracellular applications.
- To evaluate the probe's efficacy in imaging and quantifying hypoxic levels in various cancer models.
Main Methods:
- Synthesis and characterization of naphthalimide-based dual-detection fluorescent probes.
- Evaluation of probe selectivity and sensitivity to simultaneous nitroreductase (NTR) and hydrogen sulfide (H2S) activity.
- In vitro and in vivo experiments using cancer cell lines, spheroids, and tumor tissue models for confocal fluorescence imaging.
Main Results:
- The dual-detection probe DNNC exhibited superior selectivity and sensitivity to simultaneous NTR/H2S activity compared to single-detection probes.
- DNNC demonstrated excellent biocompatibility and photophysical properties for intracellular hypoxia detection.
- Spatiotemporal imaging and quantitative analysis of hypoxic levels were successfully achieved in various cancer models using DNNC.
Conclusions:
- The developed dual-detection probe DNNC offers a promising tool for molecularly detecting cancer-associated hypoxia.
- DNNC enables advanced imaging and quantification of hypoxia, crucial for understanding cancer aggressiveness and therapy resistance.
- This advancement is expected to significantly improve cancer diagnosis and guide personalized treatment strategies.
