Yield Optimisation of Hepatitis B Virus Core Particles in E. coli Expression System for Drug Delivery Applications

Izzat Fahimuddin Bin Mohamed Suffian, Mitla Garcia-Maya, Paul Brown, Tam Bui, Yuya Nishimura, Amir Rafiq Bin Mohammad Johari Palermo, Chiaki Ogino, Akihiko Kondo, Khuloud T. Al-Jamal*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)
170 Downloads (Pure)

Abstract

An E. coli expression system offers a mean for rapid, high yield and economical production of Hepatitis B Virus core (HBc) particles. However, high-level production of HBc particles in bacteria is demanding and optimisation of HBc particle yield from E. coli is required to improve laboratory-scale productivity for further drug delivery applications. Production steps involve bacterial culture, protein isolation, denaturation, purification and finally protein assembly. In this study, we describe a modified E. coli based method for purifying HBc particles and compare the results with those obtained using a conventional purification method. HBc particle morphology was confirmed by Atomic Force Microscopy (AFM). Protein specificity and secondary structure were confirmed by Western Blot and Circular Dichroism (CD), respectively. The modified method produced ∼3-fold higher yield and greater purity of wild type HBc particles than the conventional method. Our results demonstrated that the modified method produce a better yield and purity of HBc particles in an E. coli-expression system, which are fully characterised and suitable to be used for drug delivery applications.

Original languageEnglish
Article number43160
JournalScientific Reports
Volume7
DOIs
Publication statusPublished - 3 Mar 2017

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