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Ricin toxin B subunit enhancement of rotavirus NSP4 immunogenicity in mice.

Abstract：

:A 90-amino acid peptide from the simian rotavirus SA-11 nonstructural protein, NSP4 was linked to the N-terminus of the Ricinus communis A-B toxin B subunit protein (RTB) and synthesized in Escherichia coli. Recombinant RTB and the NSP4(90)::RTB fusion protein bound artificial receptor glycoprotein asialofetuin in an in vitro enzyme-linked immunosorbent assay (ELISA), demonstrating biological activity of the recombinant protein. Mice co-inoculated with purified recombinant RTB plus NSP4(90) peptide proteins or heat denatured NSP4(90)::RTB fusion protein generated higher titers of serum anti-NSP4(90) IgG antibodies than mice immunized with NSP4(90) peptide alone, indicating the presence of adjuvant functions for N-terminal linked RTB. Serum anti-NSP4(90) IgG titers were highest in mice immunized with native recombinant NSP4(90)::RTB fusion protein, confirming the immunostimulatory function of RTB. Results of experiments described here demonstrate the feasibility of using RTB mediated adjuvant functions for stimulation of the antigenicity of a rotavirus nonstructural protein. The ability of recombinant NSP4(90)::RTB fusion protein synthesized in E. coli to bind glycoprotein receptor molecules effectively indicates that protein linkage to the RTB N-terminus and synthesis of the recombinant NSP4(90)::RTB fusion protein in bacteria do not interfere with the immunostimulatory properties of the RTB subunit.

journal_name

Viral Immunol

journal_title

Viral immunology

authors

Choi NW,Estes MK,Langridge WH

doi

10.1089/vim.2006.19.54

subject

Has Abstract

pub_date

2006-04-01 00:00:00

pages

54-63

issue

1

eissn

0882-8245

issn

1557-8976

journal_volume

19

pub_type

杂志文章

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