AMBRA1 allosterically activates NLRP3 by releasing its autoinhibition.

AMBRA1 allosterically activates NLRP3 by destabilizing its autoinhibited conformation, promoting inflammatory responses in mouse disease models.

• Why it matters: Understanding how NLRP3 is released from autoinhibition is crucial for developing targeted therapies for inflammatory diseases involving NLRP3 dysfunction.
• What they did: The study used biochemical and cellular approaches to show that AMBRA1 binds NLRP3 via its β-propeller domain, destabilizing its closed form and facilitating activation, with functional tests in monocytes, macrophages, and mouse models.
• The result: Blocking the AMBRA1-NLRP3 interaction with nanobodies inhibits NLRP3 activation, highlighting a promising therapeutic strategy to modulate inflammation.