Dendritic PEG outer shells enhance serum stability of polymeric micelles

Hao jui Hsu, Yanxiao Han, Michael Cheong, Petr Král, Seungpyo Hong

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A higher surface density of poly(ethylene glycol) (PEG) on polymeric micelles enhances their stability in serum, leading to improved plasma circulation. To obtain fundamental, mechanistic understanding of the PEG effect associated with polymeric architecture/configuration, we have synthesized PEGylated dendron-based copolymers (PDCs) and linear block copolymers (LBCs) with similar molecular weights. These copolymers formed dendron (hyperbranched) and linear micelles, respectively, which were compared in terms of their stabilities in serum, micelle-serum protein interactions, and in vivo biodistributions. Overall, the dendron micelles exhibited a better serum stability (longer half-life) and thus a slower release profile than the linear micelles. Fluorescence quenching assays and molecular dynamics (MD) simulations revealed that the high serum stability of the dendron micelles can be attributed to reduced micelle-serum protein interactions, owing to their dendritic, dense PEG outer shell. These results provide an important design cue for various polymeric micelles and nanoparticles.

Original languageEnglish
Pages (from-to)1879-1889
Number of pages11
JournalNanomedicine: Nanotechnology, Biology, and Medicine
Volume14
Issue number6
DOIs
Publication statusPublished - 2018 Aug

Fingerprint

Micelles
Polyethylene glycols
Serum
Blood Proteins
Copolymers
Proteins
Ethylene Glycol
Molecular Dynamics Simulation
Nanoparticles
Block copolymers
Cues
Half-Life
Molecular dynamics
Quenching
Assays
Molecular Weight
Fluorescence
Molecular weight
Plasmas
dendron

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Medicine (miscellaneous)
  • Molecular Medicine
  • Biomedical Engineering
  • Materials Science(all)
  • Pharmaceutical Science

Cite this

Hsu, Hao jui ; Han, Yanxiao ; Cheong, Michael ; Král, Petr ; Hong, Seungpyo. / Dendritic PEG outer shells enhance serum stability of polymeric micelles. In: Nanomedicine: Nanotechnology, Biology, and Medicine. 2018 ; Vol. 14, No. 6. pp. 1879-1889.
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Dendritic PEG outer shells enhance serum stability of polymeric micelles. / Hsu, Hao jui; Han, Yanxiao; Cheong, Michael; Král, Petr; Hong, Seungpyo.

In: Nanomedicine: Nanotechnology, Biology, and Medicine, Vol. 14, No. 6, 08.2018, p. 1879-1889.

Research output: Contribution to journalArticle

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AU - Cheong, Michael

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