Regulation of cell proliferation and apoptosis in neuroblastoma cells by ccp1, a FGF2 downstream gene

Pellicano, F., Thomson, R.E., Inman, G.J. and Iwata, T. (2010) Regulation of cell proliferation and apoptosis in neuroblastoma cells by ccp1, a FGF2 downstream gene. BMC Cancer, 10(1), 657. (doi: 10.1186/1471-2407-10-657) (PMID:21118521) (PMCID:PMC3001724)

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Background: Coiled-coil domain containing 115 (Ccdc115) or coiled coil protein-1 (ccp1) was previously identified as a downstream gene of Fibroblast Growth Factor 2 (FGF2) highly expressed in embryonic and adult brain. However, its function has not been characterised to date. Here we hypothesized that ccp1 may be a downstream effecter of FGF2, promoting cell proliferation and protecting from apoptosis. Methods: Forced ccp1 expression in mouse embryonic fibroblast (MEF) and neuroblastoma SK-N-SH cell line, as well as down-regulation of ccp1 expression by siRNA in NIH3T3, was used to characterize the role of ccp1. Results: Ccp1 over-expression increased cell proliferation, whereas down-regulation of ccp1 expression reduced it. Ccp1 was able to increase cell proliferation in the absence of serum. Furthermore, ccp1 reduced apoptosis upon withdrawal of serum in SK-N-SH. The mitogen-activated protein kinase (MAPK) or ERK Kinase (MEK) inhibitor, U0126, only partially inhibited the ccp1-dependent BrdU incorporation, indicating that other signaling pathway may be involved in ccp1-induced cell proliferation. Induction of Sprouty (SPRY) upon FGF2 treatment was accelerated in ccp1 over-expressing cells. Conclusions: All together, the results showed that ccp1 regulates cell number by promoting proliferation and suppressing cell death. FGF2 was shown to enhance the effects of ccp1, however, it is likely that other mitogenic factors present in the serum can also enhance the effects. Whether these effects are mediated by FGF2 influencing the ccp1 function or by increasing the ccp1 expression level is still unclear. At least some of the proliferative regulation by ccp1 is mediated by MAPK, however other signaling pathways are likely to be involved.

Item Type:Articles
Additional Information:This work is supported by the start up fund of University of Glasgow.
Glasgow Author(s) Enlighten ID:Inman, Professor Gareth and Iwata, Dr Tomoko and Thomson, Dr Rachel and Pellicano, Dr Francesca
Authors: Pellicano, F., Thomson, R.E., Inman, G.J., and Iwata, T.
College/School:College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing > Clinical Specialities
Journal Name:BMC Cancer
Publisher:Springer Nature
ISSN (Online):1471-2407
Copyright Holders:Copyright © 2010 Pellicano et al.
First Published:First published in BMC Cancer 10:657
Publisher Policy:Reproduced under a Creative Commons License

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