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Article

Suppression of heat shock protein 27 expression promotes 5-fluorouracil sensitivity in colon cancer cells in a xenograft model

  • Authors:
    • Ryohei Hayashi
    • Yoshiyuki Ishii
    • Hiroki Ochiai
    • Atsushi Matsunaga
    • Takashi Endo
    • Hirotoshi Hasegawa
    • Yuko Kitagawa
  • View Affiliations / Copyright

    Affiliations: Department of Surgery, School of Medicine, Keio University, Tokyo 160-8582, Japan
  • Pages: 1269-1274
    |
    Published online on: July 25, 2012
       https://doi.org/10.3892/or.2012.1935
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Abstract

The present study investigates whether the expression levels of heat shock protein 27 (HSP27) in colon cancer cells are associated with 5-fluorouracil (5-FU) sensitivity in a xenograft model, as well as the mechanism responsible for regulating 5-FU sensitivity. HCT116 cells which have a high expression of HSP27 were stably transfected with specific short hairpin RNA (shRNA) in order to suppress HSP27 expression. The association between HSP27 protein expression levels and 5-FU sensitivity was evaluated in a mouse xenograft model. The mRNA expression of 5-FU metabolic enzymes and cell apoptosis were also analyzed in the transfected cells. The suppression of HSP27 protein expression led to enhanced 5-FU sensitivity. The mRNA expression levels of dihydropyrimidine dehydrogenase and orotate phosphoribosyltransferase, but not those of thymidylate synthase, and the number of apoptotic cells increased in the transfected cells after 5-FU exposure. In conclusion, the suppression of HSP27 expression in colon cancer cells may promote 5-FU sensitivity by inducing apoptosis, despite the acceleration in 5-FU metabolism.
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Copy and paste a formatted citation
Spandidos Publications style
Hayashi R, Ishii Y, Ochiai H, Matsunaga A, Endo T, Hasegawa H and Kitagawa Y: Suppression of heat shock protein 27 expression promotes 5-fluorouracil sensitivity in colon cancer cells in a xenograft model. Oncol Rep 28: 1269-1274, 2012.
APA
Hayashi, R., Ishii, Y., Ochiai, H., Matsunaga, A., Endo, T., Hasegawa, H., & Kitagawa, Y. (2012). Suppression of heat shock protein 27 expression promotes 5-fluorouracil sensitivity in colon cancer cells in a xenograft model. Oncology Reports, 28, 1269-1274. https://doi.org/10.3892/or.2012.1935
MLA
Hayashi, R., Ishii, Y., Ochiai, H., Matsunaga, A., Endo, T., Hasegawa, H., Kitagawa, Y."Suppression of heat shock protein 27 expression promotes 5-fluorouracil sensitivity in colon cancer cells in a xenograft model". Oncology Reports 28.4 (2012): 1269-1274.
Chicago
Hayashi, R., Ishii, Y., Ochiai, H., Matsunaga, A., Endo, T., Hasegawa, H., Kitagawa, Y."Suppression of heat shock protein 27 expression promotes 5-fluorouracil sensitivity in colon cancer cells in a xenograft model". Oncology Reports 28, no. 4 (2012): 1269-1274. https://doi.org/10.3892/or.2012.1935
Copy and paste a formatted citation
x
Spandidos Publications style
Hayashi R, Ishii Y, Ochiai H, Matsunaga A, Endo T, Hasegawa H and Kitagawa Y: Suppression of heat shock protein 27 expression promotes 5-fluorouracil sensitivity in colon cancer cells in a xenograft model. Oncol Rep 28: 1269-1274, 2012.
APA
Hayashi, R., Ishii, Y., Ochiai, H., Matsunaga, A., Endo, T., Hasegawa, H., & Kitagawa, Y. (2012). Suppression of heat shock protein 27 expression promotes 5-fluorouracil sensitivity in colon cancer cells in a xenograft model. Oncology Reports, 28, 1269-1274. https://doi.org/10.3892/or.2012.1935
MLA
Hayashi, R., Ishii, Y., Ochiai, H., Matsunaga, A., Endo, T., Hasegawa, H., Kitagawa, Y."Suppression of heat shock protein 27 expression promotes 5-fluorouracil sensitivity in colon cancer cells in a xenograft model". Oncology Reports 28.4 (2012): 1269-1274.
Chicago
Hayashi, R., Ishii, Y., Ochiai, H., Matsunaga, A., Endo, T., Hasegawa, H., Kitagawa, Y."Suppression of heat shock protein 27 expression promotes 5-fluorouracil sensitivity in colon cancer cells in a xenograft model". Oncology Reports 28, no. 4 (2012): 1269-1274. https://doi.org/10.3892/or.2012.1935
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