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Exosome-liposome hybrid nanoparticle codelivery of TP and miR497 conspicuously overcomes chemoresistant ovarian cancer
Abstract
Background: Although cisplatin-based chemotherapy has been used as the first-line treatment for ovarian cancer (OC), tumor cells develop resistance to cisplatin during treatment, causing poor prognosis in OC patients. Studies have demonstrated that overactivation of the phosphatidylinositol 3-kinase/protein kinase B/mammalian target of rapamycin (PI3K/AKT/mTOR) pathway is involved in tumor chemoresistance and that overexpression of microRNA-497 (miR497) may overcome OC chemotherapy resistance by inhibiting the mTOR pathway. However, the low transcriptional efficiency and unstable chemical properties of miR497 limit its clinical application. Additionally, triptolide (TP) was confirmed to possess a superior killing effect on cisplatin-resistant cell lines, partially through inhibiting the mTOR pathway. Even so, the clinical applications of TP are restricted by serious systemic toxicity and weak water solubility. Results: Herein, whether the combined application of miR497 and TP could further overcome OC chemoresistance by synergically suppressing the mTOR signaling pathway was investigated. Bioinspired hybrid nanoparticles formed by the fusion of CD47-expressing tumor exosomes and cRGD-modified liposomes (miR497/TP-HENPs) were prepared to codeliver miR497 and TP. In vitro results indicated that the nanoparticles were efficiently taken up by tumor cells, thus significantly enhancing tumor cell apoptosis. Similarly, the hybrid nanoparticles were effectively enriched in the tumor areas and exerted significant anticancer activity without any negative effects in vivo. Mechanistically, they promoted dephosphorylation of the overactivated PI3K/AKT/mTOR signaling pathway, boosted reactive oxygen species (ROS) generation and upregulated the polarization of macrophages from M2 to M1 macrophages. Conclusion: Overall, our findings may provide a translational strategy to overcome cisplatin-resistant OC and offer a potential solution for the treatment of other cisplatin-resistant tumors. Graphical Abstract:
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“Exosome-nanoparticle hybrid systems offer an innovative strategy by combining the natural benefits of exosomes with the versatility and enhanced features of synthetic nanoparticles (Table 2).”
From Emerging role of exosomes in cancer therapy: progress and challenges (2025) · cites this paper as [48]
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“By incorporating nanoparticles into or onto exosomes, researchers can create a delivery platform that offers improved stability, targeting specificity, and payload capacity [48].”
From Emerging role of exosomes in cancer therapy: progress and challenges (2025) · cites this paper as [48]
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“The use of these hybrids has shown significant potential in cancer therapy, where accuracy and effectiveness are crucial.”
From Emerging role of exosomes in cancer therapy: progress and challenges (2025) · cites this paper as [48]
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Metadata
- Authors
- Li, L., He, D., Guo, Q., Zhang, Z., Ru, D., Wang, L., Gong, K., Liu, F., Duan, Y., & Li, H.
- Venue
- Journal of Nanobiotechnology
- Published
- 2022-01-25
- Volume
- 20
- Issue
- 1
- ISSN
- 1477-3155
- PMC
- PMC8787930
- Cited by
- 206
- References
- 3
- Language
- en
- Funders
- National Natural Science Foundation of China (81874479, 81773272, 81972886, 82174135)
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