Abstract | BACKGROUND: Molecular targeted contrast-enhanced ultrasound (CEUS) imaging is a potential imaging strategy to improve the diagnostic accuracy of conventional ultrasound (US) imaging. US contrast agents are usually micrometer-sized and non-target gas bubbles while nano-sized and targeted agents containing phase-shift materials absorb more attractions for their size and the liquid core and excellent molecular imaging effect. METHODS: PLGA12k-mPEG2k-NH2, DSPE-mPEG2k and perfluorohexan (PFH) were used to construct a new targeted ultrasound contrast agent with CUB domain-containing protein 1 (CDCP1) receptor for the detection and diagnosis of prostate cancer. The potential of tumor-targeted nanoparticles (CDCP1-targeted perfluorohexan-loaded phase-transitional nanoparticles, anti-CDCP1 NPs) as contrast agents for ultrasound (US) imaging was assessed in vitro. Moreover, studies on the cytotoxicity and the targeting ability of anti-CDCP1 NPs assisted by US were carried out. RESULTS: The results showed that anti-CDCP1 NPs had low cytotoxicity, and with the increasing of polymer concentration in anti-CDCP1 NPs, the CEUS imaging of agent gradually enhanced, and enhanced imaging associated with the length of observing time. Furthermore, it was testified that anti-CDCP1 assisted the agent to target cells expressing CDCP1, which demonstrated the active targeting of anti-CDCP1 NPs in vitro. CONCLUSION: All in all, the feasibility of using targeted anti-CDCP1 NPs to enhance ultrasound imaging has been demonstrated in vitro, which laid a solid foundation for molecular US imaging in vivo, and anti-CDCP1 NPs might have a great clinical application prospect.
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Authors | Meng Zhao, Yunkai Zhu, Yanhua Zhang, Xupeng Yang, Yourong Duan, Yaqing Chen, Ying Sun |
Journal | Clinical hemorheology and microcirculation
(Clin Hemorheol Microcirc)
Vol. 80
Issue 1
Pg. 25-35
( 2022)
ISSN: 1875-8622 [Electronic] Netherlands |
PMID | 33185589
(Publication Type: Journal Article)
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Chemical References |
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Topics |
- Cell Line, Tumor
- Contrast Media
- Humans
- Male
- Molecular Imaging
- Nanoparticles
- Ultrasonography
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