1
|
Suo M, Shen H, Lyu M, Jiang Y, Liao X, Tang W, Pan Y, Zhang T, Ning S, Tang BZ. Biomimetic Nano-Cancer Stem Cell Scavenger for Inhibition of Breast Cancer Recurrence and Metastasis after FLASH-Radiotherapy. Small 2024:e2400666. [PMID: 38368259 DOI: 10.1002/smll.202400666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 02/02/2024] [Indexed: 02/19/2024]
Abstract
Compared to conventional radiotherapy (RT), FLASH-RT delivers ultra-high dose radiation, significantly reducing damage to normal tissue while guaranteeing the effect of cancer treatment. However, cancer recurrence and metastasis frequently occur after all RT due to the existence of intractable cancer stem cells (CSCs). To address this, a biomimetic nanoplatform (named TAFL) of tumor-derived exosome fusion liposomes is designed by co-loading aggregation-induced emission photothermal agents, TPE-BBT, and anti-cancer drugs, aspirin, aiming to clear CSCs for inhibiting cancer recurrence and metastasis after FLASH-RT therapy . Aspirin released in TAFL system triggered by laser irradiation can induce apoptosis and DNA damage of 4T1 CSCs, comprehensively downregulate their stemness phenotype, and inhibit their sphericity. Furthermore, the TPE-BBT mediated mild-photothermal therapy can alleviate the hypoxic tumor microenvironment, inhibit the DNA repair of CSCs, which further amplifies the effect of aspirin against CSCs, therefore reduces the effective dose of aspirin, making TAFL more biologically safe. In vivo experimental results demonstrated that decreased CSCs population mediated by TAFL system treatment significantly inhibited tumor recurrence and metastasis after FLASH-RT therapy. In summary, this TAFL system provides a new idea for the future clinical application of FLASH-RT therapy.
Collapse
Affiliation(s)
- Meng Suo
- School of Biomedical Engineering, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 511436, China
| | - Hanchen Shen
- Department of Chemistry, the Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
| | - Meng Lyu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Yi Jiang
- Departments of Breast Surgery, The Second Affiliated Hospital of Guangxi Medical University, Nanning, 530000, China
| | - Xiaoming Liao
- Departments of Breast Surgery, The Second Affiliated Hospital of Guangxi Medical University, Nanning, 530000, China
| | - Wei Tang
- Departments of Breast Surgery, The Second Affiliated Hospital of Guangxi Medical University, Nanning, 530000, China
| | - You Pan
- Departments of Breast Surgery, The Second Affiliated Hospital of Guangxi Medical University, Nanning, 530000, China
| | - Tianfu Zhang
- School of Biomedical Engineering, Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 511436, China
| | - Shipeng Ning
- Departments of Breast Surgery, The Second Affiliated Hospital of Guangxi Medical University, Nanning, 530000, China
| | - Ben Zhong Tang
- Department of Chemistry, the Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Life Science, and State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen, Guangdong, 518172, China
| |
Collapse
|