Abstract
Dynamics of magnetoliposomes binding to the tumor cells and the efficiency of their recognition for targeted drug delivery is largely determined by physical interaction. In this paper we assess the strength of magnetic dipole interaction that occurs between endogenous magnetic nanoparticles in tumor cells and exogenous magnetic nanoparticles as a component of magnetoliposomes, and compare it with the forces of specific binding of the antigen-antibody complex. To assess the strength of magnetic dipole interaction the model of chains of identical particles was used, and an order of magnitude, 10−9 N, was obtained. Thus, the indicated force has an order of magnitude close to the forces of specific binding, and even more. The force of magnetic dipole interaction between a magnetically marked dosage form and tumor cells is virtually the additional specific binding force — “passive targeting” for targeted drug delivery in consequence of the fact that tumor cells tend to contain the number of biogenic nanoparticles of magnetite (Fe3O4) by an order of magnitude greater than normal.
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Original Russian Text © S.V. Gorobets, O.Yu. Gorobets, Yu.M. Chyzh, D.V. Sivenok, 2013, published in Biofizika, 2013, Vol. 58, No. 3, pp. 488–494.
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Gorobets, S.V., Gorobets, O.Y., Chyzh, Y.M. et al. Magnetic dipole interaction of endogenous magnetic nanoparticles with magnetoliposomes for targeted drug delivery. BIOPHYSICS 58, 379–384 (2013). https://doi.org/10.1134/S000635091303007X
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DOI: https://doi.org/10.1134/S000635091303007X