Targeting HER2-breast tumors with scFv-decorated bimodal nanoprobes

Journal of Nanobiotechnology
Christophe AlricEmilie Allard-Vannier

Abstract

Recent advances in nanomedicine have shown the great interest of active targeting associated to nanoparticles. Single chain variable fragments (scFv) of disease-specific antibodies are very promising targeting entities because they are small, not immunogenic and able to bind their specific antigens. The present paper is devoted to biological properties in vitro and in vivo of fluorescent and pegylated iron oxide nanoparticles (SPIONs-Cy-PEG-scFv) functionalized with scFv targeting Human Epithelial growth Receptor 2 (HER2). Thanks to a site-selective scFv conjugation, the resultant nanoprobes demonstrated high affinity and specific binding to HER2 breast cancer cells. The cellular uptake of SPIONs-Cy-PEG-scFv was threefold higher than that for untargeted PEGylated iron oxide nanoparticles (SPIONs-Cy-PEG) and is correlated to the expression of HER2 on cells. In vivo, the decrease of MR signals in HER2+ xenograft tumor is about 30% at 24 h after the injection. These results all indicate that SPIONs-Cy-PEG-scFv are relevant tumor-targeting magnetic resonance imaging agents, suitable for diagnosis of HER2 overexpressing breast tumor.

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Citations

Aug 31, 2019·Artificial Cells, Nanomedicine, and Biotechnology·Xuhong ZhaoShengsong Tang
Mar 3, 2020·Frontiers in Medicine·Justine PerrinJacques Barbet
Dec 2, 2020·Materials Science & Engineering. C, Materials for Biological Applications·Jiafeng ZhuangPing Wang
Nov 13, 2020·Reports of Biochemistry & Molecular Biology·Forough Abdollahzadeh, Foroogh Nejatollahi
Jul 16, 2019·International Journal of Biological Macromolecules·Zahra Ghafouri VarnosfaderaniMojtaba Zarean
Oct 16, 2020·European Journal of Pharmaceutics and Biopharmaceutics : Official Journal of Arbeitsgemeinschaft Für Pharmazeutische Verfahrenstechnik E.V·Phuoc Vinh NguyenEmilie Allard-Vannier

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Methods Mentioned

BETA
ELISA
surface plasmon
confocal microscopy
flow cytometry
xenograft
electron microscopy
electron microscopies
atomic
enzyme-linked immunosorbent assays
FCS

Software Mentioned

Kaluza
GraphPad Prism
Ig
Summit
LabSpec

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