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Extraction and purification of hepatitis B virus-like M particles from a recombinant Saccharomyces cerevisiae strain using alumina powder.

Abstract：

:A recombinant hepatitis B surface antigen (HBsAg) has been produced in the yeast Saccharomyces cerevisiae and used as a vaccine against hepatitis B virus (HBV) infection. The present study aimed to optimize the extraction of recombinant virus-like particles (rVLPs) to develop a simple purification procedure based on gel filtration and high performance size-exclusion chromatography. The findings showed that disruption of yeast cells with alumina powder increased the yield of the total proteins (290mg/l) and rVLPs (1mg/l) compared to the values for glass beads (171mg/l and 0.5mg/l), as estimated by quantitative ELISA. The purification of rVLPs was performed by two consecutive gel filtration chromatographic steps, namely Sephacryl S-200 followed by SEC-250 HPLC. The purified M protein was analyzed by atomic force microscopy and shown to assemble in particles that were able to recognize HBV antibodies in the sera of patients with chronic hepatitis B, providing evidence for their immunoreactivity.

journal_name

J Virol Methods

journal_title

Journal of virological methods

authors

Hadiji-Abbes N,Martin M,Benzina W,Karray-Hakim H,Gergely C,Gargouri A,Mokdad-Gargouri R

doi

10.1016/j.jviromet.2012.09.023

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

132-7

issue

1

eissn

0166-0934

issn

1879-0984

pii

S0166-0934(12)00353-9

journal_volume

187

pub_type

杂志文章

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