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Updated: May 10, 2026
06:28
Cerenkov Luminescence Imaging of Interscapular Brown Adipose Tissue
Published on: October 7, 2014
Activatable probes based on distance-dependent luminescence associated with Cerenkov radiation
Nalinikanth Kotagiri1, Dariusz M Niedzwiedzki, Kohtaro Ohara
1Department of Radiology, Washington University School of Medicine, 4525 Scott Avenue, St. Louis, MO 63110, USA.
Angewandte Chemie (International Ed. in English)
|June 15, 2013
Summary
Researchers developed activatable probes using radionuclide and quantum dots linked by DNA. The probes utilize copper-64
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Radiochemistry
Background:
- Quantum dots (QDs) offer unique optical properties for bioimaging.
- Radionuclides can be used as energy sources for excitation.
- DNA nanotechnology provides precise control over molecular assembly.
Purpose of the Study:
- To develop activatable probes for distance-dependent sensing.
- To utilize Cerenkov radiation for quantum dot excitation.
- To create a nanoscale ruler based on luminescence intensity.
Main Methods:
- Constructed DNA-linked probes incorporating a radionuclide (copper-64) and quantum dots.
- Measured luminescence of quantum dots excited by Cerenkov radiation.
- Analyzed luminescence intensity as a function of distance from the radionuclide.
Main Results:
- Probes exhibited distance-dependent luminescence.
- Luminescence intensity was inversely correlated with proximity to the radionuclide.
- The system functioned as a nanoscale ruler, with lowest luminescence nearest the QD.
Conclusions:
- Demonstrated a novel method for activatable probes using radionuclide- and QD-based systems.
- Established a distance-dependent luminescence mechanism exploitable for sensing applications.
- Validated the potential of this system as a nanoscale ruler for biological applications.
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