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Article Open Access

Radiosensitizing effect of 5‑aminolevulinic acid in colorectal cancer in vitro and in vivo

  • Authors:
    • Kazuto Yamada
    • Yasutoshi Murayama
    • Yosuke Kamada
    • Tomohiro Arita
    • Toshiyuki Kosuga
    • Hirotaka Konishi
    • Ryo Morimura
    • Atsushi Shiozaki
    • Yoshiaki Kuriu
    • Hisashi Ikoma
    • Takeshi Kubota
    • Masayoshi Nakanishi
    • Hitoshi Fujiwara
    • Kazuma Okamoto
    • Eigo Otsuji
  • View Affiliations / Copyright

    Affiliations: Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602‑8566, Japan
    Copyright: © Yamada et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 5132-5138
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    Published online on: March 29, 2019
       https://doi.org/10.3892/ol.2019.10198
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Abstract

The radiosensitizing effect of 5‑aminolevulinic acid (5‑ALA) has been demonstrated in glioma and melanoma in a number of studies. Enhancing the radiosensitivity of colorectal cancer may improve survival rates and lessen adverse effects. The present study assessed the radiosensitizing effect of 5‑ALA in colorectal cancer using the human colon cancer cell line HT29 in vitro and in vivo. In vitro, cells were pretreated with 5‑ALA and exposed to ionizing radiation. Cells pretreated with or without 5‑ALA were compared using a colony formation assay. In vivo, HT29 cells were implanted into mice subcutaneously and subsequently exposed to ionizing radiation. 5‑ALA was administrated by intraperitoneal injection. Subcutaneous tumors treated with or without 5‑ALA were compared. Single‑dose and multi‑dose irradiations were applied both in vitro and in vivo. Cells exposed to multi‑dose irradiation and pretreated with 5‑ALA in vitro had a significantly lower surviving fraction compared with cells without 5‑ALA pretreatment. Following multi‑dose irradiation in vivo, the volume of the subcutaneous tumors treated with 5‑ALA was significantly lower compared with that of tumors without treatment. These results suggest that radiotherapy with 5‑ALA may enhance the therapeutic effect in colon cancer.
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Copy and paste a formatted citation
Spandidos Publications style
Yamada K, Murayama Y, Kamada Y, Arita T, Kosuga T, Konishi H, Morimura R, Shiozaki A, Kuriu Y, Ikoma H, Ikoma H, et al: Radiosensitizing effect of 5‑aminolevulinic acid in colorectal cancer in vitro and in vivo. Oncol Lett 17: 5132-5138, 2019.
APA
Yamada, K., Murayama, Y., Kamada, Y., Arita, T., Kosuga, T., Konishi, H. ... Otsuji, E. (2019). Radiosensitizing effect of 5‑aminolevulinic acid in colorectal cancer in vitro and in vivo. Oncology Letters, 17, 5132-5138. https://doi.org/10.3892/ol.2019.10198
MLA
Yamada, K., Murayama, Y., Kamada, Y., Arita, T., Kosuga, T., Konishi, H., Morimura, R., Shiozaki, A., Kuriu, Y., Ikoma, H., Kubota, T., Nakanishi, M., Fujiwara, H., Okamoto, K., Otsuji, E."Radiosensitizing effect of 5‑aminolevulinic acid in colorectal cancer in vitro and in vivo". Oncology Letters 17.6 (2019): 5132-5138.
Chicago
Yamada, K., Murayama, Y., Kamada, Y., Arita, T., Kosuga, T., Konishi, H., Morimura, R., Shiozaki, A., Kuriu, Y., Ikoma, H., Kubota, T., Nakanishi, M., Fujiwara, H., Okamoto, K., Otsuji, E."Radiosensitizing effect of 5‑aminolevulinic acid in colorectal cancer in vitro and in vivo". Oncology Letters 17, no. 6 (2019): 5132-5138. https://doi.org/10.3892/ol.2019.10198
Copy and paste a formatted citation
x
Spandidos Publications style
Yamada K, Murayama Y, Kamada Y, Arita T, Kosuga T, Konishi H, Morimura R, Shiozaki A, Kuriu Y, Ikoma H, Ikoma H, et al: Radiosensitizing effect of 5‑aminolevulinic acid in colorectal cancer in vitro and in vivo. Oncol Lett 17: 5132-5138, 2019.
APA
Yamada, K., Murayama, Y., Kamada, Y., Arita, T., Kosuga, T., Konishi, H. ... Otsuji, E. (2019). Radiosensitizing effect of 5‑aminolevulinic acid in colorectal cancer in vitro and in vivo. Oncology Letters, 17, 5132-5138. https://doi.org/10.3892/ol.2019.10198
MLA
Yamada, K., Murayama, Y., Kamada, Y., Arita, T., Kosuga, T., Konishi, H., Morimura, R., Shiozaki, A., Kuriu, Y., Ikoma, H., Kubota, T., Nakanishi, M., Fujiwara, H., Okamoto, K., Otsuji, E."Radiosensitizing effect of 5‑aminolevulinic acid in colorectal cancer in vitro and in vivo". Oncology Letters 17.6 (2019): 5132-5138.
Chicago
Yamada, K., Murayama, Y., Kamada, Y., Arita, T., Kosuga, T., Konishi, H., Morimura, R., Shiozaki, A., Kuriu, Y., Ikoma, H., Kubota, T., Nakanishi, M., Fujiwara, H., Okamoto, K., Otsuji, E."Radiosensitizing effect of 5‑aminolevulinic acid in colorectal cancer in vitro and in vivo". Oncology Letters 17, no. 6 (2019): 5132-5138. https://doi.org/10.3892/ol.2019.10198
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