1. Neutrophil-mediated clinical nanodrug for treatment of residual tumor after focused ultrasound ablation.
- Author
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Shen J, Hao J, Chen Y, Liu H, Wu J, Hu B, Wang Y, Zheng Y, and Cai X
- Subjects
- Animals, Cell Line, Tumor, Doxorubicin analogs & derivatives, High-Intensity Focused Ultrasound Ablation methods, Inflammation, Male, Mice, Mice, Inbred BALB C, Mice, Nude, Polyethylene Glycols, Antineoplastic Agents pharmacology, Nanomedicine, Neoplasm, Residual drug therapy, Neutrophils, Ultrasonic Therapy
- Abstract
Background: The risk of local recurrence after high-intensity focused ultrasound (HIFU) is relatively high, resulting in poor prognosis of malignant tumors. The combination of HIFU with traditional chemotherapy continues to have an unsatisfactory outcome because of off-site drug uptake., Results: Herein, we propose a strategy of inflammation-tendency neutrophil-mediated clinical nanodrug targeted therapy for residual tumors after HIFU ablation. We selected neutrophils as carriers and PEGylated liposome doxorubicin (PLD) as a model chemotherapeutic nanodrug to form an innovative cell therapy drug (PLD@NEs). The produced PLD@NEs had a loading capacity of approximately 5 µg of PLD per 10
6 cells and maintained the natural characteristics of neutrophils. The targeting performance and therapeutic potential of PLD@NEs were evaluated using Hepa1-6 cells and a corresponding tumor-bearing mouse model. After HIFU ablation, PLD@NEs were recruited to the tumor site by inflammation (most in 4 h) and released PLD with inflammatory stimuli, leading to targeted and localized postoperative chemotherapy., Conclusions: This effective integrated method fully leverages the advantages of HIFU, chemotherapy and neutrophils to attract more focus on the practice of improving existing clinical therapies., (© 2021. The Author(s).)- Published
- 2021
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