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Title: | CCDC86 is a novel Ki-67-interacting protein important for cell division |
Other Titles: | CCDC86/Cyclon is a novel Ki-67 interacting protein important for cell division |
Authors: | Stamatiou, K Chmielewska, A Ohta, S Earnshaw, WC Vagnarelli, P |
Keywords: | cell division;chromosomes;MYCN;CCDC86;Ki-67 |
Issue Date: | 25-Jan-2023 |
Publisher: | The Company of Biologists |
Citation: | Stamatiou, K. et al. (2023) 'CCDC86 is a novel Ki-67-interacting protein important for cell division', Journal of Cell Science, 136 (2), pp. 1 - 13. doi: 10.1242/jcs.260391. |
Abstract: | The chromosome periphery is a network of proteins and RNAs that coats the outer surface of mitotic chromosomes. Despite the identification of new components, the functions of this complex compartment are poorly characterised. In this study, we identified a novel chromosome periphery-associated protein, CCDC86 (also known as cyclon). Using a combination of RNA interference, microscopy and biochemistry, we studied the functions of CCDC86 in mitosis. CCDC86 depletion resulted in partial disorganisation of the chromosome periphery with alterations in the localisation of Ki-67 (also known as MKI67) and nucleolin (NCL), and the formation of abnormal cytoplasmic aggregates. Furthermore, CCDC86-depleted cells displayed errors in chromosome alignment, altered spindle length and increased apoptosis. These results suggest that, within the chromosome periphery, different subcomplexes that include CCDC86, nucleolin and B23 (nucleophosmin or NPM1) are required for mitotic spindle regulation and correct kinetochore–microtubule attachments, thus contributing to chromosome segregation in mitosis. Moreover, we identified CCDC86 as a MYCN-regulated gene, the expression levels of which represent a powerful marker for prognostic outcomes in neuroblastoma. |
Description: | Data availability: Imaging and quantification datasets are available upon request from the corresponding authors. Acknowledgements: We would like to acknowledge Prof. Arturo Sala (Brunel University London) for useful discussion on the link between CCDC86 and MYCN. Supplementary information is available online at: https://journals.biologists.com/jcs/article/136/2/jcs260391/286751/CCDC86-is-a-novel-Ki-67-interacting-protein#supplementary-data . |
URI: | https://bura.brunel.ac.uk/handle/2438/25800 |
DOI: | https://doi.org/10.1242/jcs.260391 |
ISSN: | 0021-9533 |
Other Identifiers: | ORCiD: Konstantinos Stamatiou https://orcid.org/0000-0002-5650-078X ORCiD: Aldona Chmielewska https://orcid.org/0000-0003-3411-6776 ORCiD: Shinya Ohta https://orcid.org/0000-0003-2424-1741 ORCiD: William C. Earnshaw https://orcid.org/0000-0002-7191-0621 ORCiD: Paola Vagnarelli https://orcid.org/0000-0002-0000-2271 |
Appears in Collections: | Dept of Life Sciences Research Papers |
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