Imaging bioluminescence by detecting localized haemodynamic contrast from photosensitized vasculature.
Nat Biomed Eng
; 8(6): 775-786, 2024 Jun.
Article
in En
| MEDLINE
| ID: mdl-38730257
ABSTRACT
Bioluminescent probes are widely used to monitor biomedically relevant processes and cellular targets in living animals. However, the absorption and scattering of visible light by tissue drastically limit the depth and resolution of the detection of luminescence. Here we show that bioluminescent sources can be detected with magnetic resonance imaging by leveraging the light-mediated activation of vascular cells expressing a photosensitive bacterial enzyme that causes the conversion of bioluminescent emission into local changes in haemodynamic contrast. In the brains of rats with photosensitized vasculature, we used magnetic resonance imaging to volumetrically map bioluminescent xenografts and cell populations virally transduced to express luciferase. Detecting bioluminescence-induced haemodynamic signals from photosensitized vasculature will extend the applications of bioluminescent probes.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Magnetic Resonance Imaging
/
Hemodynamics
/
Luminescent Measurements
Limits:
Animals
/
Humans
Language:
En
Journal:
Nat Biomed Eng
Year:
2024
Document type:
Article
Affiliation country: