Efficient extracellular production of hybrid escherichia-coli heat-labile enterotoxin-b subunits in a marine vibrio

Marcello, Alessandro and Loregian, Arianna and Palu, Giorgio and Hirst, Timothy R. (1994) Efficient extracellular production of hybrid escherichia-coli heat-labile enterotoxin-b subunits in a marine vibrio. FEMS Microbiology Letters, 117 (1). pp. 47-51. ISSN 03781097. (The full text of this publication is not available from this repository)

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Official URL
http://dx.doi.org/10.1111/j.1574-6968.1994.tb06741...

Abstract

Escherichia coil heat-labile enterotoxin B subunit (EtxB) has been proposed as a potential protein carrier for the delivery of heterologous peptides to target cells, particularly for the oral delivery of epitopes to the mucosal immune system. In this study, two extensions to the C-terminus of EtxB were genetically engineered that correspond to a well-characterized neutralising epitope of glycoprotein D from herpes simplex virus (EtxB-gD) and to the C-terminal nine amino acids from the 38 kDa subunit of HSV-encoded ribonucleotide reductase (EtxB-R2). Here we describe the extracellular secretion of the two hybrid EtxBs from a marine Vibrio harbouring a broad-host range inducible expression vector containing the hybrid genes. Large amounts of intact fusion proteins (15-20 mg per liter of culture) were secreted into the medium upon induction. These hybrid proteins maintained the receptor-binding activity of the native toxin as well as being cross-reactive with anti-EtxB and anti-heterologous peptide monoclonal antibodies.

Item Type: Article
Uncontrolled keywords: escherichia-coli heat-labile enterotoxin; vibrio sp 60; heterologous expression, secretion
Subjects: Q Science > QR Microbiology
Divisions: Faculties > Science Technology and Medical Studies > School of Biosciences
Depositing User: O.O. Odanye
Date Deposited: 07 Jul 2009 20:21
Last Modified: 24 Apr 2014 08:16
Resource URI: http://kar.kent.ac.uk/id/eprint/19878 (The current URI for this page, for reference purposes)
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