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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Veterinary Medicine / Faculty of Veterinary Medicine >
Peer-reviewed Journal Articles, etc >
Metformin preferentially enhances the radio-sensitivity of cancer stem-like cells with highly mitochondrial respiration ability in HMPOS
| Title: | Metformin preferentially enhances the radio-sensitivity of cancer stem-like cells with highly mitochondrial respiration ability in HMPOS |
| Authors: | Deguchi, Tatsuya Browse this author →KAKEN DB | | Hosoya, Kenji Browse this author →KAKEN DB | | Kim, Shango Browse this author | | Murase, Yusuke Browse this author | | Yamamoto, Kumiko Browse this author | | Bo, Tomoki Browse this author | | Yasui, Hironobu Browse this author →KAKEN DB | | Inanami, Osamu Browse this author →KAKEN DB | | Okumura, Mahiro Browse this author |
| Issue Date: | 24-Sep-2021 |
| Publisher: | Cell Press |
| Journal Title: | Molecular therapy oncolytics |
| Volume: | 22 |
| Start Page: | 143 |
| End Page: | 151 |
| Publisher DOI: | 10.1016/j.omto.2021.08.007 |
| Abstract: | Metformin has many anti-cancer effects, alone or in combination with radiation. However, the mechanism underlying its radio-sensitized effect is still unclear, especially for cancer stem-like cells (CSCs). Here, the radio-sensitized effect of metformin was investigated, and its mechanism was revealed in CSCs derived from canine osteosarcoma cell line (HMPOS), a canine osteosarcoma cell line. Spheroid cells (SCs) were used as CSCs-rich cells derived from sphere formation, and SCs were compared with normal adherent culture cells (ACs). The radio-sensitizing effect of metformin using clonogenic assay and tumor growth in mice xenograft model were evaluated, and the mechanism of its radio-sensitization focusing on mitochondrial function was revealed. Metformin significantly enhanced radio-sensitivity of SCs through its inhibition of the mitochondrial function, as shown by decreased oxygen consumption, decreased mitochondrial membrane potential, and decreased ATP production. Additionally, SCs had a higher ability of mitochondrial respiration than ACs, which may have caused difference of their sensitivity of metformin and irradiation. In conclusion, mitochondrial function might play an important role in the sensitivity of metformin and irradiation, and drugs that target mitochondrial respiration, such as metformin, are promising radio-sensitizers to target CSCs. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/83264 |
| Appears in Collections: | 獣医学院・獣医学研究院 (Graduate School of Veterinary Medicine / Faculty of Veterinary Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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