Age-Dependent Deterioration of Nuclear Pore Assembly in Mitotic
RESEARCH ARTICLE Age-dependent deterioration of nuclear pore assembly in mitotic cells decreases transport dynamics Irina L Rempel1, Matthew M Crane2, David J Thaller3, Ankur Mishra4, Daniel PM Jansen1, Georges Janssens1, Petra Popken1, Arman Aks¸it1, Matt Kaeberlein2, Erik van der Giessen4, Anton Steen1, Patrick R Onck4, C Patrick Lusk3, Liesbeth M Veenhoff1* 1European Research Institute for the Biology of Ageing (ERIBA), University of Groningen, University Medical Center Groningen, Groningen, Netherlands; 2Department of Pathology, University of Washington, Seattle, United States; 3Department of Cell Biology, Yale School of Medicine, New Haven, United States; 4Zernike Institute for Advanced Materials, University of Groningen, Groningen, Netherlands Abstract Nuclear transport is facilitated by the Nuclear Pore Complex (NPC) and is essential for life in eukaryotes. The NPC is a long-lived and exceptionally large structure. We asked whether NPC quality control is compromised in aging mitotic cells. Our images of single yeast cells during aging, show that the abundance of several NPC components and NPC assembly factors decreases. Additionally, the single-cell life histories reveal that cells that better maintain those components are longer lived. The presence of herniations at the nuclear envelope of aged cells suggests that misassembled NPCs are accumulated in aged cells. Aged cells show decreased dynamics of transcription factor shuttling and increased nuclear compartmentalization. These functional changes are likely caused by the presence
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