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

  • Published online on: March 29, 2019     https://doi.org/10.3892/ol.2019.10198
  • Pages: 5132-5138
  • Copyright: © Yamada et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


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.
View Figures
View References

Related Articles

Journal Cover

June 2019
Volume 17 Issue 6

Print ISSN: 1792-1074
Online ISSN:1792-1082

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
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