Protocol for covalent-targeted and activatable photoacoustic imaging agent for tumor imaging in mice

Area of Science:

• Biomedical imaging
• Molecular imaging
• Photoacoustic imaging

Background:

• Endogenous chromophores create background noise in photoacoustic imaging.
• Activatable probes can enhance signal specificity and reduce noise.
• Developing targeted probes is crucial for accurate disease detection.

Purpose of the Study:

• To present a protocol for a novel activatable covalent photoacoustic imaging probe, NOx-JS013.
• To demonstrate the probe's utility in imaging aggressive prostate cancer in mouse models.
• To establish a strategy for mitigating background noise in photoacoustic imaging.

Main Methods:

• Synthesis of the activatable covalent photoacoustic imaging probe, NOx-JS013.
• In vitro and in situ validation using gel-based activity-based protein profiling and cellular imaging.
• Application of the probe for tumor imaging in aggressive prostate cancer mouse models.

Main Results:

• Successful synthesis and characterization of the NOx-JS013 probe.
• Demonstrated activity-based protein profiling and cellular uptake.
• Effective visualization of tumors in aggressive prostate cancer mouse models using the probe.

Conclusions:

• The NOx-JS013 probe is a viable tool for reducing background noise in photoacoustic imaging.
• This activatable probe strategy facilitates enhanced tumor imaging in preclinical models.
• The protocol provides a foundation for developing advanced photoacoustic imaging agents.