{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"institution":[{"name":"bioRxiv"}],"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T13:34:52Z","timestamp":1785418492556,"version":"3.56.0"},"posted":{"date-parts":[[2026,7,8]]},"group-title":"Cell Biology","reference-count":124,"publisher":"openRxiv","license":[{"start":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T00:00:00Z","timestamp":1783468800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"award":["R01GM105672"],"award-info":[{"award-number":["R01GM105672"]}],"id":[{"id":"https:\/\/ror.org\/04q48ey07","id-type":"ROR","asserted-by":"publisher"}]},{"award":["R35GM153474"],"award-info":[{"award-number":["R35GM153474"]}],"id":[{"id":"https:\/\/ror.org\/04q48ey07","id-type":"ROR","asserted-by":"publisher"}]},{"award":["R01NS122236"],"award-info":[{"award-number":["R01NS122236"]}],"id":[{"id":"https:\/\/ror.org\/01s5ya894","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"accepted":{"date-parts":[[2026,7,8]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                <jats:p>\n                  Nuclear pore complexes (NPCs) control molecular exchange across the nuclear envelope, but how they tailor their selective permeability to meet the needs of specific cell types and\/or environments remains poorly understood. We demonstrate that the strength of the NPC diffusion barrier differs across cell types, is particularly stringent in cultured neurons, and correlates with the\n                  <jats:italic>O<\/jats:italic>\n                  -linked N-acetylglucosamine (GlcNAc) modification of nucleoporins. Using conditional tools that specifically control nucleoporin GlcNAcylation, we show that GlcNAc modulates NPC permeability. Interestingly, nucleoporin GlcNAcylation is mechanosensitive, increasing in cells plated on stiff substrates, a condition where nuclear pores dilate. Indeed, we demonstrate that increasing or decreasing GlcNAcylation dilates and constricts NPCs, respectively. Further,\n                  <jats:italic>O<\/jats:italic>\n                  -linked N-acetylglucosamine transferase is recruited to modify NPCs upon their acute constriction during osmotic shock. Thus, cells employ GlcNAc to modulate steady-state NPC permeability in response to mechanical inputs and to counteract critical changes to their osmotic environment.\n                <\/jats:p>","DOI":"10.64898\/2026.07.07.737034","type":"posted-content","created":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T10:35:21Z","timestamp":1783506921000},"source":"Crossref","is-referenced-by-count":0,"title":["Mechanoresponsive modulation of nuclear pore complex structure and function by\n                  <i>O<\/i>\n                  -GlcNAc"],"prefix":"10.64898","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5386-0934","authenticated-orcid":false,"given":"Sunandini","family":"Chandra","sequence":"first","affiliation":[{"name":"Department of Cell Biology, Yale School of Medicine, New Haven, CT"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7871-2583","authenticated-orcid":false,"given":"Kimberly J.","family":"Morgan","sequence":"additional","affiliation":[{"name":"Department of Cell Biology, Yale School of Medicine, New Haven, CT"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William L.","family":"Chadwick","sequence":"additional","affiliation":[{"name":"Department of Cell Biology, Yale School of Medicine, New Haven, CT"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1688-2226","authenticated-orcid":false,"given":"Megan C.","family":"King","sequence":"additional","affiliation":[{"name":"Department of Cell Biology, Yale School of Medicine, New Haven, CT"},{"name":"Department of Molecular, Cell and Developmental Biology, Yale University, New Haven, CT"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4703-0533","authenticated-orcid":false,"given":"C. 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