Format

Send to

Choose Destination
See comment in PubMed Commons below
J Chromatogr A. 2014 Jan 31;1327:66-72. doi: 10.1016/j.chroma.2013.12.049. Epub 2013 Dec 24.

Solid-phase polyethylene glycol conjugation using hydrophobic interaction chromatography.

Author information

  • 1School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China; Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China.
  • 2School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China.
  • 3Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China.
  • 4School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China. Electronic address: nyuhuang@gmail.com.

Abstract

PEGylation is a widely applied approach to improve the pharmacokinetic and pharmacodynamic properties of protein therapeutics. The current solution-phase PEGylation protocols often suffer from poor yield of homogeneously PEGylated bioactive products and hence fall short of being commercially attractive. To improve upon these techniques, here we developed a novel, solid-phase PEGylation methodology using a hydrophobic interaction chromatography (HIC) resin. Two variations of the HIC-based PEGylation are described that are tailored towards conjugation of proteins with hydrophobicity index above (lysozyme) and below (fibroblast growth factor 1, FGF-1) that of the mPEG-butyraldehyde (mPEG) chain used. In the case of lysozyme, the protein was first immobilized on the HIC, and the HIC-bound protein was then conjugated by passing over the column. In the case of FGF-1, the mPEG solution was first immobilized on the HIC, and the FGF-1 solution was then passed through the column. Circular dichroism (CD) spectroscopy demonstrated HIC-based PEGylation almost retained the secondary structures of proteins. Bioactivity assay showed that the recovery of activity of HIC-based PEGylated rhFGF-1 (i.e. 92%) was higher than that of liquid-phase PEGylated rhFGF-1 (i.e. 61%), while HIC-based PEGylated lysozyme showed the same activity recovery (i.e. 7%) as the liquid-phase PEGylated form. For specific proteins, the HIC-based solid-phase PEGylation maybe offer a more promising alternative than the current PEGylation methods and is expected to have a major impact in the area of protein-based therapeutics.

KEYWORDS:

FGF-1; Hydrophobic interaction chromatography; Lysozyme; Solid-phase PEGylation; mPEG-butyraldehyde

PMID:
24411087
DOI:
10.1016/j.chroma.2013.12.049
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center