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Area of Science:

  • Biomedical Engineering
  • Immunology
  • Nanotechnology

Background:

  • Nanoparticles (NPs) in biological fluids acquire a protein corona, influencing their behavior.
  • This corona comprises proteins like complement, immunoglobulins, and apolipoproteins, mediating NP-immune system interactions.

Purpose of the Study:

  • To review the impact of NP-protein corona interactions on nanomedicine.
  • To discuss immune responses to NPs, including antibody generation against polyethylene glycol (PEG) in vaccines.
  • To explore harnessing NP-immune cell interactions for targeted delivery.

Main Methods:

  • Literature review of NP-protein corona interactions.
  • Analysis of immune responses to NPs and vaccine components.
  • Discussion of strategies for immune cell-mediated NP targeting.

Main Results:

  • The protein corona significantly affects nanomedicine stability, biodistribution, efficacy, and safety.
  • Antibody responses to PEG in SARS-CoV-2 mRNA vaccines and potential hypersensitivity mechanisms are highlighted.
  • NP interactions with immune cells offer opportunities for enhanced targeted delivery.

Conclusions:

  • Understanding NP-protein corona interactions is crucial for nanomedicine development.
  • Immune responses to NPs, including PEGylated ones, require careful consideration for safety and efficacy.
  • Harnessing immune interactions can advance targeted nanomedicine strategies.