ArticlebioRxiv : the preprint server for biology2025
Visualizing nuclear pore complex plasticity with pan-Expansion Microscopy.
Article in bioRxiv : the preprint server for biology, 2025. 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
The exploration of cell-type and environmentally-responsive nuclear pore complex (NPC) plasticity requires new, accessible tools. Using pan-Expansion Microscopy (pan-ExM), NPCs were identified by machine learning-facilitated segmentation with resolved cytoplasmic rings (CR), inner rings (IR) and nuclear rings (NR). They exhibited a large range of diameters with a bias for dilated NPCs at the basal nuclear surface in clusters suggestive of local islands of nuclear envelope (NE) tension. Whereas hyperosmotic shock constricted NPCs analogously to those found in annulate lamellae (AL), depletion of LINC complexes specifically eliminated the modest nuclear surface diameter biases. Therefore, LINC complexes may contribute locally to nuclear envelope tension to toggle NPC diameter between dilated, but not constricted, states. Lastly, POM121 shifts from the NR to the IR specifically in induced pluripotent stem cell derived neurons (iPSNs) from a patient with
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