Dissolution of biomacromolecules in organic solvents by nano-complexing with poly(ethylene glycol)

Hyejung Mok, Ho Jeong Kim, Tae Gwan Park

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Various biomacromolecules (BMs) such as proteins, DNA, and carbohydrates are extremely difficult to be dissolved in a single organic solvent phase for sustained release or targeted delivery formulation. In this study, three different BMs could be solubilized in selected organic solvents by forming poly(ethylene glycol) (PEG)-assisted nano-complexes while maintaining their structural integrity. Dynamic light scattering (DLS) and atomic force microscopy (AFM) analysis revealed that proteins, DNA, and carbohydrate polymers could be nano-complexed with PEG in various organic solvents. The diameter of nano-complexes decreased roughly from ∼600 nm to ∼100 nm with increasing weight ratio of PEG/BM. The present solubilization technique could be potentially applied for sustained release formulations of various therapeutic biological drugs.

Original languageEnglish
Pages (from-to)306-313
Number of pages8
JournalInternational Journal of Pharmaceutics
Volume356
Issue number1-2
DOIs
StatePublished - May 22 2008
Externally publishedYes

Funding

This study was supported by the grant from the National Research Laboratory project from the Ministry of Science and Technology, Republic of Korea.

Keywords

  • Biomacromolecules
  • Bovine serum albumin
  • DNA
  • Hyaluronic acid
  • Poly(ethylene glycol)
  • Solubilization in organic solvents

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