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Nup358, a nucleoporin, functions as a key determinant of the nuclear pore complex structure remodeling during skeletal myogenesis
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Asally, Munehiro, Yasuda, Yoshinari, Oka, Masahiro, Otsuka, Shotaro, Yoshimura, Shige H., Takeyasu, Kunio and Yoneda, Yoshihiro (2011) Nup358, a nucleoporin, functions as a key determinant of the nuclear pore complex structure remodeling during skeletal myogenesis. FEBS Journal, 278 (4). pp. 610-621. doi:10.1111/j.1742-4658.2010.07982.x ISSN 1742-464X.
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Official URL: http://dx.doi.org/10.1111/j.1742-4658.2010.07982.x
Abstract
The nuclear pore complex (NPC) is the only gateway for molecular trafficking across the nuclear envelope. The NPC is not merely a static nuclear-cytoplasmic transport gate; the functional analysis of nucleoporins has revealed dynamic features of the NPC in various cellular functions, such as mitotic spindle formation and protein modification. However, it is not known whether the NPC undergoes dynamic changes during biological processes such as cell differentiation. In the present study, we evaluate changes in the expression levels of several nucleoporins and show that the amount of Nup358/RanBP2 within individual NPCs increases during muscle differentiation in C2C12 cells. Using atomic force microscopy, we demonstrate structural differences between the cytoplasmic surfaces of myoblast and myotube NPCs and a correlation between the copy number of Nup358 and the NPC structure. Furthermore, small interfering RNA-mediated depletion of Nup358 in myoblasts suppresses myotube formation without affecting cell viability, suggesting that NUP358 plays a role in myogenesis. These findings indicate that the NPC undergoes dynamic remodeling during muscle cell differentiation and that Nup358 is prominently involved in the remodeling process.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QH Natural history Q Science > QP Physiology |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||
| Library of Congress Subject Headings (LCSH): | Cell differentiation, Atomic force microscopy, Myoblasts | ||||||
| Journal or Publication Title: | FEBS Journal | ||||||
| Publisher: | Wiley-Blackwell Publishing Ltd. | ||||||
| ISSN: | 1742-464X | ||||||
| Official Date: | February 2011 | ||||||
| Dates: |
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| Volume: | 278 | ||||||
| Number: | 4 | ||||||
| Number of Pages: | 12 | ||||||
| Page Range: | pp. 610-621 | ||||||
| DOI: | 10.1111/j.1742-4658.2010.07982.x | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| Funder: | Japan. Monbu Kagakushō [Japan. Ministry of Education, Culture, Sports, Science and Technology] (MK), Takeda Kagaku Shinkō Zaidan [Takeda Science Foundation] |
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