Age-dependent deterioration of nuclear pore assembly in mitotic cells decreases transport dynamics

被引：52

作者：

Rempel, Irina L. ^{[1
]}

Crane, Matthew M. ^{[2
]}

Thaller, David J. ^{[3
]}

Mishra, Ankur ^{[4
]}

Jansen, Daniel P. M. ^{[1
]}

Janssens, Georges ^{[1
]}

Popken, Petra ^{[1
]}

Aksit, Arman ^{[1
]}

Kaeberlein, Matt ^{[2
]}

van der Giessen, Erik ^{[4
]}

Steen, Anton ^{[1
]}

Onck, Patrick R. ^{[4
]}

Lusk, C. Patrick ^{[3
]}

Veenhoff, Liesbeth M. ^{[1
]}

机构：

[1] Univ Groningen, Univ Med Ctr Groningen, ERIBA, Groningen, Netherlands

[2] Univ Washington, Dept Pathol, Seattle, WA 98195 USA

[3] Yale Sch Med, Dept Cell Biol, New Haven, CT USA

[4] Univ Groningen, Zernike Inst Adv Mat, Groningen, Netherlands

来源：

ELIFE | 2019年 / 8卷

基金：

美国国家卫生研究院;

关键词：

SACCHAROMYCES-CEREVISIAE; PROTEIN LOCALIZATION; MEMBRANE-PROTEINS; SYSTEMS-ANALYSIS; BUDDING YEAST; COMPLEX; IDENTIFICATION; IMPORT; ARCHITECTURE; MECHANISM;

D O I：

10.7554/eLife.48186

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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 of misassembled NPCs, as we find that two NPC assembly mutants show similar transport phenotypes as aged cells. We conclude that NPC interphase assembly is a major challenge for aging mitotic cells.

引用

页数：26

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