Activity-based imaging probes of the proteasome

Area of Science:

• Biochemistry
• Molecular Biology
• Chemical Biology

Background:

• The proteasome is a critical cellular machine involved in numerous signaling pathways and implicated in various diseases.
• Approved proteasome inhibitors like bortezomib and carfilzomib highlight the proteasome as a validated therapeutic target for diseases such as multiple myeloma.
• Continued research into proteasome biology is essential for the development of novel, next-generation proteasome inhibitors.

Purpose of the Study:

• To review recent advancements in the development of imaging probes for proteasomes.
• To highlight the utility of chemical probes in dissecting proteasome biology and inhibitor development.
• To discuss the latest progress in creating immunoproteasome-selective imaging probes.

Main Methods:

• Development of chemical probes that selectively inhibit proteasome catalytic activity.
• Synthesis of inhibitor analogues for visualizing catalytically active proteasome subunits.
• Design of probes enabling real-time monitoring of proteasome activity in vitro and in vivo.

Main Results:

• Chemical probes have significantly advanced the understanding of proteasome function.
• Inhibitor analogues serve as valuable tools for visualizing proteasome subunits and activity.
• Emerging imaging probes allow for real-time assessment of proteasome activity in living systems.

Conclusions:

• Imaging probes are crucial for advancing proteasome research and drug development.
• These probes offer powerful capabilities for assessing proteasome inhibitor efficacy in clinical applications.
• The development of immunoproteasome-specific imaging probes represents a key area of ongoing research.