Abstract
The combination of liposomes with magnetic nanoparticles, because of their strong effect on T2 relaxation can open new ways in the innovative cancer therapy and diagnosis. In order to design an intelligent contrast agent in MRI, we chose anti-HER2 nanobody the smallest fully functional antigen-binding fragments evolved from the variable domain, the VHH, of a camel heavy chain-only antibody. These targeted magnetoliposomes bind to the HER2 antigen which is highly expressed on breast and ovarian cancer cells so reducing the side effects as well as increasing image contrast and effectiveness. Cellular iron uptake analysis and in vitro MRI of HER2 positive cells incubated with targeted nanoparticles show specific cell targeting. In vitro MRI shows even at the lowest density (200 Cells/μl), dark spots corresponding to labeled cells which were still detectable. These results suggest that this new type of nanoparticles could be effective antigen-targeted contrast agents for molecular imaging.
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Conflict of Interest
The authors (Sepideh Khaleghi, Fatemeh Rahbarizadeh, Davoud Ahmadvand, Hamid Reza Madaah Hosseini) declare to have no competing interests.
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This article does not contain any studies with human participants and animals performed by any of the authors.
Funding
This paper was supported by Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran and School of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran reference 16550.
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Associate Editor Partha Roy oversaw the review of this article.
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Khaleghi, S., Rahbarizadeh, F., Ahmadvand, D. et al. Anti-HER2 VHH Targeted Magnetoliposome for Intelligent Magnetic Resonance Imaging of Breast Cancer Cells. Cel. Mol. Bioeng. 10, 263–272 (2017). https://doi.org/10.1007/s12195-017-0481-z
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DOI: https://doi.org/10.1007/s12195-017-0481-z