中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
3-三丁基甲锡烷基苯甲酸 | 3-(tributylstannyl)benzoic acid | 273747-03-8 | C19H32O2Sn | 411.172 |
N-琥珀酰亚胺 3-碘苯甲酸酯 | N-succinimidyl 3-iodobenzoate | 91487-18-2 | C11H8INO4 | 345.093 |
—— | Tributyl{[3-(tributylstannyl)benzoyl]oxy}stannane | 112725-21-0 | C31H58O2Sn2 | 700.22 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
N-琥珀酰亚胺 3-碘苯甲酸酯 | N-succinimidyl 3-iodobenzoate | 91487-18-2 | C11H8INO4 | 345.093 |
Auger electrons (AEs) are very low-energy electrons emitted by radionuclides such as I-125 (125I). This energy is deposited across a small distance (<0.5 μm), resulting in high linear energy transfer that is potent for causing lethal damage to cancer cells. Thus, AE-emitting radiotherapeutic agents have great potential for cancer treatment. In this study, thermosensitive liposomes (TSLs) encapsulating 125I-labeled doxorubicin (DOX) derivatives were developed for Auger electron therapy, targeting the DNA of cancer cells. A radioiodinated DOX derivative [125I]5 highly accumulated in the nuclei of cancer cells and showed potent cytotoxicity against Colon 26 cancer cells by AEs. Subsequently, [125I]5 was loaded into the TSLs with high encapsulation efficiency. Potent release of [125I]5 from TSLs was achieved with heating, whereas a decreased release was observed without heating. Furthermore, TSLs encapsulating [125I]5 showed a high uptake in the nuclei at 42 °C for 1 h. We supposed that [125I]5 was released by heating at 42 °C and accumulated in the nuclei in the cells. These results suggest that the combination of TSLs encapsulating [125I]5 and hyperthermia is an effective cancer therapy.