Please use this identifier to cite or link to this item:
|Title:||Cancer-related ectopic expression of the bone-related transcription factor RUNX2 in non-osseous metastatic tumor cells is linked to cell proliferation and motility||Authors:||Leong, D.T.
van Wijnen, A.J.
|Issue Date:||28-Oct-2010||Citation:||Leong, D.T., Lim, J., Goh, X., Pratap, J., Pereira, B.P., Kwok, H.S., Nathan, S.S., Dobson, J.R., Lian, J.B., Ito, Y., Voorhoeve, P.M., Stein, G.S., Salto-Tellez, M., Cool, S.M., van Wijnen, A.J. (2010-10-28). Cancer-related ectopic expression of the bone-related transcription factor RUNX2 in non-osseous metastatic tumor cells is linked to cell proliferation and motility. Breast Cancer Research 12 (5) : -. ScholarBank@NUS Repository. https://doi.org/10.1186/bcr2762||Abstract:||Introduction: Metastatic breast cancer cells frequently and ectopically express the transcription factor RUNX2, which normally attenuates proliferation and promotes maturation of osteoblasts. RUNX2 expression is inversely regulated with respect to cell growth in osteoblasts and deregulated in osteosarcoma cells.Methods: Here, we addressed whether the functional relationship between cell growth and RUNX2 gene expression is maintained in breast cancer cells. We also investigated whether the aberrant expression of RUNX2 is linked to phenotypic parameters that could provide a selective advantage to cells during breast cancer progression.Results: We find that, similar to its regulation in osteoblasts, RUNX2 expression in MDA-MB-231 breast adenocarcinoma cells is enhanced upon growth factor deprivation, as well as upon deactivation of the mitogen-dependent MEK-Erk pathway or EGFR signaling. Reduction of RUNX2 levels by RNAi has only marginal effects on cell growth and expression of proliferation markers in MDA-MB-231 breast cancer cells. Thus, RUNX2 is not a critical regulator of cell proliferation in this cell type. However, siRNA depletion of RUNX2 in MDA-MB-231 cells reduces cell motility, while forced exogenous expression of RUNX2 in MCF7 cells increases cell motility.Conclusions: Our results support the emerging concept that the osteogenic transcription factor RUNX2 functions as a metastasis-related oncoprotein in non-osseous cancer cells. © 2010 Leong et al.; licensee BioMed Central Ltd.||Source Title:||Breast Cancer Research||URI:||http://scholarbank.nus.edu.sg/handle/10635/53398||ISSN:||14655411||DOI:||10.1186/bcr2762|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 30, 2021
WEB OF SCIENCETM
checked on Jul 21, 2021
checked on Jul 9, 2021
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.