ArticlebioRxiv : the preprint server for biology2026
Rapid optogenetic manipulation of autophagy reveals that the nuclear pore complex is a robust autophagy substrate.
Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Autophagy, a conserved recycling process, manages intracellular quality control to mitigate stress. To determine the rapid effects of autophagy perturbation, we developed the first optogenetic tool to rapidly inhibit autophagy, termed ASAP. Our approach selectively inhibits autophagy within 5 minutes, providing a precise and dynamic approach to study autophagy regulation. Proteomic profiling with ASAP revealed the most tightly regulated autophagy substrates along with novel, previously unidentified substrates, including nuclear pore complex (NPC) proteins. Interestingly, autophagy regulates quality control of incomplete NPCs still in the cytoplasm via specific LC3-interacting regions (LIRs), sparing NPCs embedded in the nuclear envelope. Upon rapid autophagy inhibition, incomplete NPCs accumulate and instead of undergoing autophagic degradation, cytoplasmic NPCs aggregate in processing bodies. Using ASAP, we demonstrate rapid and specific inhibition of autophagy, revealing that the nuclear pore complex is a tightly regulated autophagy substrate.
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