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| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Chen, Lei Zhang, Jinghui Xu, Lihua Zhu, Luchao Jing, Jinpeng Feng, Yushuo Wang, Zongzhang Liu, Peifei Sun, Wenjing Liu, Xiangmei Li, Yimin Chen, Hongmin |
| Abstract | Radiation therapy is one of the most commonly used methods in clinical cancer treatment, and radiosensitizers could achieve enhanced therapeutic efficacy by incorporating heavy elements into structures. However, the secondary excitation of these high-Z elements-doped nanosensitizers still imply intrinsic defects of low efficiency. Herein, we designed Bi-doped titanium dioxide nanosensitizers in which high-Z Bi ions with adjustable valence state (Bi3+ or Bi4+) replaced some positions of Ti4+ of anatase TiO2, increasing both X-rays absorption and oxygen vacancies. The as-prepared TiO2:Bi nanosensitizers indicated high ionizing radiation energy-transfer efficiency and photocatalytic activity, resulting in efficient electron–hole pair separation and reactive oxygen species production. After further modification with cancer cell targeting peptide, the obtained nanoplatform demonstrated good performance in U87MG cell uptakes and intracellular radicals-generation, severely damaging the vital subcellular organs of U87MG cells, such as mitochondrion, membrane lipid, and nuclei etc. These combined therapeutic actions mediated by the composition-tunable nanosensitizers significantly inhibited the U87MG tumor growth, providing a refreshing strategy for X-ray induced dynamic therapy of malignant tumors. |
| Related Links | https://jnanobiotechnology.biomedcentral.com/counter/pdf/10.1186/s12951-022-01494-7.pdf |
| Ending Page | 11 |
| Page Count | 11 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 14773155 |
| DOI | 10.1186/s12951-022-01494-7 |
| Journal | Journal of Nanobiotechnology |
| Issue Number | 1 |
| Volume Number | 20 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2022-06-21 |
| Access Restriction | Open |
| Subject Keyword | Biotechnology Nanotechnology Molecular Medicine Radiosensitizers Semiconductors Reactive oxygen species Composition tunability X-ray induced photodynamic therapy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Bioengineering Pharmaceutical Science Medicine Applied Microbiology and Biotechnology Biomedical Engineering Molecular Medicine Nanoscience and Nanotechnology |
| Journal Impact Factor | 10.6/2023 |
| 5-Year Journal Impact Factor | 11.4/2023 |
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