Regulation of WNT3 and WNT3A mRNAs in human cancer cell lines NT2, MCF-7, and MKN45

  • Authors:
    • Masaru Katoh
  • View Affiliations

  • Published online on: February 1, 2002     https://doi.org/10.3892/ijo.20.2.373
  • Pages: 373-377
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Abstract

We have previously cloned and characterized human WNT2B/WNT13, WNT3, WNT3A, WNT5B, WNT6, WNT7B, WNT8A, WNT10A, WNT10B, WNT11, WNT14, and WNT14B/WNT15 by using bioinformatics, cDNA-library screening, cDNA-PCR, and RACE. WNT3 and WNT3A genes are two human paralogues of mouse proto-oncogene Wnt3, which induces carcinogenesis through activation of the β-catenin - TCF signaling pathway. Here, regulation of WNT3 and WNT3A mRNAs in human cancer cell lines was investigated. WNT3 and WNT3A mRNAs were co-expressed in an embryonal carcinoma cell line NT2, which is reported to differentiate into postmitotic CNS neurons by treatment with retinoic acid for two weeks. Expression level of WNT3 mRNA in NT2 cells was not changed during 72 h after retinoic acid treatment, while expression of WNT3A mRNA was down-regulated in NT2 cells by retinoic acid. WNT3 and WNT3A mRNAs were also co-expressed in a breast cancer cell line MCF-7, and were down-regulated together by β-estradiol in MCF-7 cells. Expression of WNT3 mRNA in a gastric cancer cell line MKN45 was not changed after treatment with tumor necrosis factor α (TNFα) or interferon γ (IFNγ), and that of WNT3A mRNA was undetectable before and after treatment with TNFα or IFNγ. WNT3A, down-regulated by retinoic acid in NT2 cells, might play key roles in the maintenance of NT2 cells in the undifferentiated proliferation stage through activation of the β-catenin - TCF signaling pathway.

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February 2002
Volume 20 Issue 2

Print ISSN: 1019-6439
Online ISSN:1791-2423

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Spandidos Publications style
Katoh M: Regulation of WNT3 and WNT3A mRNAs in human cancer cell lines NT2, MCF-7, and MKN45. Int J Oncol 20: 373-377, 2002.
APA
Katoh, M. (2002). Regulation of WNT3 and WNT3A mRNAs in human cancer cell lines NT2, MCF-7, and MKN45. International Journal of Oncology, 20, 373-377. https://doi.org/10.3892/ijo.20.2.373
MLA
Katoh, M."Regulation of WNT3 and WNT3A mRNAs in human cancer cell lines NT2, MCF-7, and MKN45". International Journal of Oncology 20.2 (2002): 373-377.
Chicago
Katoh, M."Regulation of WNT3 and WNT3A mRNAs in human cancer cell lines NT2, MCF-7, and MKN45". International Journal of Oncology 20, no. 2 (2002): 373-377. https://doi.org/10.3892/ijo.20.2.373