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Cancer cell membrane-decorated hybrid liposomes for treating metastatic breast cancer based on enhanced cancer immunotherapy

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Abstract

Purpose

Our goal was to increase the targetability of our nanoparticles to specific targets to increase their penetration into the tumor and to enhance immunotherapy with ketoconazole (KTZ), BMS-202, and indocyanine green (ICG)-induced photothermal therapy (PTT) for anticancer effects.

Methods

We prepared liposomes through a thin film formation process in which hydrophobic drugs BMS-202 and KTZ were embedded in a lipid bilayer, and ICG was embedded inside the liposomes as a hydrophilic drug. In the process, the cell membranes of specific target cancer cells were fused to increase penetration and targeting. The resulting nanoparticles were evaluated in vitro and in vivo to confirm their anticancer effects.

Results

Numerous experiments have demonstrated the properties of BMS-202/ICG/KTZ-loaded hybrid liposomes. The results of the in vitro/in vivo experiments confirmed successful enhancement of the targeting ability of the nanoparticles prepared by fusing with the cell membranes of specific cancer cells to increase their targetability and penetration. In addition, although the drug alone did not show significant cytotoxicity to 4T1 cancer cells by MTT assay, liposomes containing both KTZ and BMS-202 showed a significant effect on secondary tumor suppression in animal experiments compared to liposomes containing only a single drug, confirming the effectiveness of the enhanced immunotherapy.

Conclusion

Our study showed that exosome inhibition and immune checkpoint blockade act synergistically in cancer immunotherapy.

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Acknowledgements

This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT; No. NRF-2019R1A2C2085292 and NRF-2019R1A5A2027340). Schematic illustrations in Scheme 1 and Fig. 4 were created with BioRender.com.

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Correspondence to Yu Seok Youn.

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Conflict of interest

All authors (J. Lee, W.T. Lee, X.T. Le, and Y.S. Youn) declare that they have no conflicts of interest.

Human and animal rights

The animal study protocol was approved by the Institutional Animal Care and Use Committee at Sungkyunkwan University (No. SKKU IACUC 2022-07-18-1) and followed standard protocols for animal handling and care.

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Junyeong Lee and Woo Tak Lee have contributed equally to this work.

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Supplementary material 1 (DOCX 70.8 kb)

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Lee, J., Lee, W.T., Le, X.T. et al. Cancer cell membrane-decorated hybrid liposomes for treating metastatic breast cancer based on enhanced cancer immunotherapy. J. Pharm. Investig. (2024). https://doi.org/10.1007/s40005-023-00661-8

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  • DOI: https://doi.org/10.1007/s40005-023-00661-8

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