Superparamagnetic Iron Oxide Nanoparticles: Cytotoxicity, Metabolism, and Cellular Behavior in Biomedicine Applications

Int J Nanomedicine. 2021 Aug 31:16:6097-6113. doi: 10.2147/IJN.S321984. eCollection 2021.

Abstract

Superparamagnetic iron oxide nanoparticles (SPIONs) have been widely investigated and applied in the field of biomedicine due to their excellent superparamagnetic properties and reliable traceability. However, with the optimization of core composition, shell types and transfection agents, the cytotoxicity and metabolism of different SPIONs have great differences, and the labeled cells also show different cellular behaviors. Therefore, a holistic review of the construction and application of SPIONs is desired. This review focuses the advances of SPIONs in the field of biomedicine in recent years. After summarizing the toxicity of different SPIONs, the uptake, distribution and metabolism of SPIONs in vitro were discussed. Then, the regulation of labeled-cells behavior is outlined. Furthermore, the major challenges in the optimization process of SPIONs and insights on its future developments are proposed.

Keywords: biological behavior; cytotoxicity; stem cells; superparamagnetic iron oxide nanoparticles.

Publication types

  • Review

MeSH terms

  • Magnetic Iron Oxide Nanoparticles
  • Magnetite Nanoparticles* / adverse effects

Substances

  • Magnetite Nanoparticles

Grants and funding

This work is supported by grants from the Major State Basic Research Development Program of China (2017YFA0104303), the National Natural Science Foundation of China (No. 81970883, 81970885), the Six talent peaks project in Jiangsu Province (Grant Nos. YY-073), and the Project of Invigorating Health Care through Science, Technology and Education.