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Involvement of MAF1 homolog, negative regulator of RNA polymerase III in colorectal cancer progression

  • Authors:
    • Kentaro Hokonohara
    • Naohiro Nishida
    • Norikatsu Miyoshi
    • Hidekazu Takahashi
    • Naotsugu Haraguchi
    • Taishi Hata
    • Chu Matsuda
    • Tsunekazu Mizushima
    • Yuichiro Doki
    • Masaki Mori
  • View Affiliations / Copyright

    Affiliations: Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565‑0871, Japan
    Copyright: © Hokonohara et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 1001-1009
    |
    Published online on: January 7, 2019
       https://doi.org/10.3892/ijo.2019.4678
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Abstract

Polymerase (Pol) III‑dependent transcription controls the abundance of transfer RNAs, 5S ribosomal RNA and small non‑coding RNAs within cells, and is known to serve an essential role in the maintenance of intracellular homeostasis. However, its contribution to cancer progression has not been extensively explored. The present study demonstrated that the evolutionarily conserved MAF1 homolog, negative regulator of RNA Pol III (MAF1) may be closely associated with malignant potential and poor prognosis in colorectal cancer (CRC). Notably, immunohistochemical analysis of 146 CRC surgical specimens revealed that high expression levels of MAF1 were associated with advanced tumor depth, lymph node metastasis, distant metastasis and poor prognosis. In vitro loss‑of‑function assays revealed that MAF1 knockdown suppressed chemoresistance and migration of CRC cancer cells. Furthermore, detailed analysis of an independent CRC dataset (n=615) demonstrated that the prognostic impact of MAF1 gene expression was particularly marked in microsatellite instability (MSI)‑positive patients, who benefit from immune checkpoint blockade. High expression levels of MAF1 were revealed to be an independent prognostic indicator in MSI‑positive CRC. These findings suggested that MAF1 may have an essential role in CRC progression, particularly in MSI‑positive cases.
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Copy and paste a formatted citation
Spandidos Publications style
Hokonohara K, Nishida N, Miyoshi N, Takahashi H, Haraguchi N, Hata T, Matsuda C, Mizushima T, Doki Y, Mori M, Mori M, et al: Involvement of MAF1 homolog, negative regulator of RNA polymerase III in colorectal cancer progression. Int J Oncol 54: 1001-1009, 2019.
APA
Hokonohara, K., Nishida, N., Miyoshi, N., Takahashi, H., Haraguchi, N., Hata, T. ... Mori, M. (2019). Involvement of MAF1 homolog, negative regulator of RNA polymerase III in colorectal cancer progression. International Journal of Oncology, 54, 1001-1009. https://doi.org/10.3892/ijo.2019.4678
MLA
Hokonohara, K., Nishida, N., Miyoshi, N., Takahashi, H., Haraguchi, N., Hata, T., Matsuda, C., Mizushima, T., Doki, Y., Mori, M."Involvement of MAF1 homolog, negative regulator of RNA polymerase III in colorectal cancer progression". International Journal of Oncology 54.3 (2019): 1001-1009.
Chicago
Hokonohara, K., Nishida, N., Miyoshi, N., Takahashi, H., Haraguchi, N., Hata, T., Matsuda, C., Mizushima, T., Doki, Y., Mori, M."Involvement of MAF1 homolog, negative regulator of RNA polymerase III in colorectal cancer progression". International Journal of Oncology 54, no. 3 (2019): 1001-1009. https://doi.org/10.3892/ijo.2019.4678
Copy and paste a formatted citation
x
Spandidos Publications style
Hokonohara K, Nishida N, Miyoshi N, Takahashi H, Haraguchi N, Hata T, Matsuda C, Mizushima T, Doki Y, Mori M, Mori M, et al: Involvement of MAF1 homolog, negative regulator of RNA polymerase III in colorectal cancer progression. Int J Oncol 54: 1001-1009, 2019.
APA
Hokonohara, K., Nishida, N., Miyoshi, N., Takahashi, H., Haraguchi, N., Hata, T. ... Mori, M. (2019). Involvement of MAF1 homolog, negative regulator of RNA polymerase III in colorectal cancer progression. International Journal of Oncology, 54, 1001-1009. https://doi.org/10.3892/ijo.2019.4678
MLA
Hokonohara, K., Nishida, N., Miyoshi, N., Takahashi, H., Haraguchi, N., Hata, T., Matsuda, C., Mizushima, T., Doki, Y., Mori, M."Involvement of MAF1 homolog, negative regulator of RNA polymerase III in colorectal cancer progression". International Journal of Oncology 54.3 (2019): 1001-1009.
Chicago
Hokonohara, K., Nishida, N., Miyoshi, N., Takahashi, H., Haraguchi, N., Hata, T., Matsuda, C., Mizushima, T., Doki, Y., Mori, M."Involvement of MAF1 homolog, negative regulator of RNA polymerase III in colorectal cancer progression". International Journal of Oncology 54, no. 3 (2019): 1001-1009. https://doi.org/10.3892/ijo.2019.4678
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