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Cell Division: A Focus on Molecular Mechanisms

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Biology".

Deadline for manuscript submissions: 20 September 2024 | Viewed by 681

Special Issue Editors


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Guest Editor
National Research Council (CNR)–Institute of Molecular Biology and Pathology (IBPM), c/o Department of Biology and Biotechnology “Charles Darwin”, Sapienza University of Rome, 00185 Roma, Italy
Interests: cytokinesis; Golgi apparatus; membrane trafficking; cell cycle; cancer; Drosophila melanogaster

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Guest Editor
Institute of Experimental Endocrinology and Oncology "G. Salvatore" (IEOS), National Research Council (CNR), 80131 Naples, Italy
Interests: mitosis; Golgi apparatus; cell cycle

Special Issue Information

Dear Colleagues,

Cells divide and reproduce via two types of cell division processes: mitosis and meiosis. Mitosis, typical of somatic lineage, generates two identical daughter cells, while meiosis, which occurs in the germline, produces haploid gametes responsible for the transmission of genetic information to the next generation. Both processes require a highly regulated and carefully orchestrated sequence of events that induce remodeling of both the cytoskeleton and cell membranes. These changes ensure the formation of new cellular structures, such as the spindle apparatus necessary for correct chromosome segregation, and the disassembly/remodeling of pre-existing structures, such as the endoplasmic reticulum, Golgi apparatus and nuclear envelope later distributed and reformed in the cells that arise. Cytoplasmic material and smaller organelles, such as mitochondria, must also be distributed correctly within daughter cells. The failure of these mechanisms is the basis of numerous human pathologies such as cancer. Therefore, we welcome original papers and review articles to this Special Issue, with a focus on recent studies that disseminate greater knowledge of cell division and the molecular mechanisms that regulate this process to better understand its role in pathologies.

Dr. Stefano Sechi
Dr. Antonino Colanzi
Guest Editors

Manuscript Submission Information

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Keywords

  • cell cycle
  • cell division
  • post-translational modification (PTM)
  • mitosis/meiosis
  • cell organelles
  • cytokinesis
  • membrane trafficking
  • disease
  • therapeutic target
  • model organisms

Published Papers (1 paper)

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21 pages, 3165 KiB  
Article
Essential Role of COPII Proteins in Maintaining the Contractile Ring Anchoring to the Plasma Membrane during Cytokinesis in Drosophila Male Meiosis
by Yoshiki Matsuura, Kana Kaizuka and Yoshihiro H. Inoue
Int. J. Mol. Sci. 2024, 25(8), 4526; https://doi.org/10.3390/ijms25084526 - 20 Apr 2024
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Abstract
Coatomer Protein Complex-II (COPII) mediates anterograde vesicle transport from the endoplasmic reticulum (ER) to the Golgi apparatus. Here, we report that the COPII coatomer complex is constructed dependent on a small GTPase, Sar1, in spermatocytes before and during Drosophila male meiosis. COPII-containing foci [...] Read more.
Coatomer Protein Complex-II (COPII) mediates anterograde vesicle transport from the endoplasmic reticulum (ER) to the Golgi apparatus. Here, we report that the COPII coatomer complex is constructed dependent on a small GTPase, Sar1, in spermatocytes before and during Drosophila male meiosis. COPII-containing foci co-localized with transitional endoplasmic reticulum (tER)-Golgi units. They showed dynamic distribution along astral microtubules and accumulated around the spindle pole, but they were not localized on the cleavage furrow (CF) sites. The depletion of the four COPII coatomer subunits, Sec16, or Sar1 that regulate COPII assembly resulted in multinucleated cell production after meiosis, suggesting that cytokinesis failed in both or either of the meiotic divisions. Although contractile actomyosin and anilloseptin rings were formed once plasma membrane ingression was initiated, they were frequently removed from the plasma membrane during furrowing. We explored the factors conveyed toward the CF sites in the membrane via COPII-mediated vesicles. DE-cadherin-containing vesicles were formed depending on Sar1 and were accumulated in the cleavage sites. Furthermore, COPII depletion inhibited de novo plasma membrane insertion. These findings suggest that COPII vesicles supply the factors essential for the anchoring and/or constriction of the contractile rings at cleavage sites during male meiosis in Drosophila. Full article
(This article belongs to the Special Issue Cell Division: A Focus on Molecular Mechanisms)
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