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Dacarbazine-primed carbon quantum dots coated with breast cancer cell-derived exosomes for improved breast cancer therapy
Abstract
Imprecise targeting of chemotherapeutic drugs often leads to severe toxicity during breast cancer therapy. To address this issue, we have devised a strategy to load dacarbazine (DC) into fucose-based carbon quantum dots (CQDs), which are subsequently coated with exosomes (Ex-DC@CQDs) derived from breast cancer cells. Nanoparticle tracking analysis and western blotting revealed that Ex-DC@CQDs retained the structural and functional characteristics of exosomes. We found that exosomes facilitated the transport of DC@CQDs to cancer cells via heparan sulfate proteoglycan (HSPG) receptors, followed by an augmented depolarization of the mitochondrial membrane potential, ROS generation, and induction of apoptosis leading to cell death. In vivo imaging and pharmacokinetic studies demonstrated enhanced antitumor targeting and efficacy compared to free DC which we attribute to an improved pharmacokinetic profile, a greater tumor accumulation via exosome-mediated- HSPG receptor-driven cell uptake, and sustained release of the Ex-DC@CQDs. Our findings may pave the way for the further development of biologically sourced nanocarriers for breast cancer targeting.
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“Exosomes are able to specifically target tumor cells via HSPG receptors and protect the consistency of DC and CQDs throughout delivery [221].”
From Emerging role of exosomes in cancer therapy: progress and challenges (2025) · cites this paper as [221]
In the citing paper
“Pratiksha Tiwari et al. formulated a method for the targeted administration of the chemotherapy drug DC to BC cells utilizing CQDs.”
From Emerging role of exosomes in cancer therapy: progress and challenges (2025) · cites this paper as [221]
In the citing paper
“The exosome-CQD complex demonstrated tremendous potential in cancer therapy through effective targeting mechanisms, improved pharmacokinetics, and enhanced drug efficacy [221].”
From Emerging role of exosomes in cancer therapy: progress and challenges (2025) · cites this paper as [221]
In the citing paper
“To enhance DC’s solubility and photostability, it was loaded onto CQDs and subsequently enclosed within exosomes originating from BC cells (Ex-DC@CQDs) for targeted therapy.”
From Emerging role of exosomes in cancer therapy: progress and challenges (2025) · cites this paper as [221]
In the citing paper
“| Breast cancer | Ex-DC@CQDs | Enhanced tumor targeting and therapeutic efficacy | [221] |”
From Emerging role of exosomes in cancer therapy: progress and challenges (2025) · cites this paper as [221]
Citations
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Internalization of Exosomes through Receptor-Mediated Endocytosis
Gonda, A., Kabagwira, J., Senthil, G. N., & Wall, N. R. (2019) · Molecular Cancer Research · doi:10.1158/1541-7786.mcr-18-0891 · Cited by 296
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Cited by
Sorted by citations
Emerging role of exosomes in cancer therapy: progress and challenges
Li, J., Wang, J., & Chen, Z. (2025) · Molecular Cancer · doi:10.1186/s12943-024-02215-4 · Cited by 297
Metadata
- Authors
- Tiwari, P., Shukla, R. P., Yadav, K., Singh, N., Marwaha, D., Gautam, S., Bakshi, A. K., Rai, N., Kumar, A., Sharma, D., & Mishra, P. R.
- Venue
- Journal of Controlled Release
- Publisher
- Elsevier BV
- Published
- 2024-01
- Volume
- 365
- Pages
- 43-59
- ISSN
- 0168-3659
- Cited by
- 90
- References
- 2
- Language
- en
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