Toward effective Atg8-based ATTECs: Approaches and perspectives.

Area of Science:

• Molecular Biology
• Drug Discovery
• Biochemistry

Background:

• Targeted protein degradation is a promising therapeutic strategy.
• Atg8-family proteins (LC3/GABARAP) mediate key cellular processes.
• Proximity-inducing small molecules can target protein interactions.

Purpose of the Study:

• To analyze past attempts at identifying LC3/GABARAP inhibitors.
• To explain the lack of potent inhibitors.
• To propose future directions for discovering selective LC3/GABARAP inhibitors.

Main Methods:

• Literature review of reported inhibitor screening campaigns.
• Analysis of challenges in targeting LC3/GABARAP interactions.
• Discussion of potential strategies for inhibitor development.

Main Results:

• Intensive screening over five years has failed to yield potent LC3/GABARAP ligands.
• Existing approaches have been insufficient for therapeutic exploitation.
• The lack of potent inhibitors remains a significant hurdle.

Conclusions:

• Novel strategies are needed to identify potent and selective LC3/GABARAP inhibitors.
• Further research could unlock therapeutic applications for targeted protein degradation.
• Understanding LC3/GABARAP interactions is crucial for drug development.