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Ghasemi, A.* ; Mohammad, N.* ; Mautner, J. ; Taghipour Karsabet, M.* ; Amani, J.* ; Ardjmand, A.* ; Vakili, Z.*

Immunization with a recombinant fusion protein protects mice against Helicobacter pylori infection.

Vaccine 36, 5124-5132 (2018)

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Open Access Green as soon as Postprint is submitted to ZB.

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More than 50% of the world's population is infected with the bacterium Helicobacter pylori. If left untreated, infection with H. pylori can cause chronic gastritis and peptic ulcer disease, which may progress into gastric cancer. Owing to the limited efficacy of anti-H. pylori antibiotic therapy in clinical practice, the development of a protective vaccine to combat this pathogen has been a tempting goal for several years. In this study, a chimeric gene coding for the antigenic parts of H. pylori FIiD, UreB, VacA, and CagL was generated and expressed in bacteria and the potential of the resulting fusion protein (rFUVL) to induce humoral and cellular immune responses and to provide protection against H. pylori infection was evaluated in mice. Three different immunization adjuvants were tested along with rFUVL: CpG oligodeoxynucleotides (CpG ODN), Addavax, and Cholera toxin subunit B. Compared to the control group that had received PBS, vaccinated mice showed significantly higher cellular recall responses and antigen-specific IgG2a, IgG1, and gastric IgA antibody titers. Importantly, rFUVL immunized mice exhibited a reduction of about three orders of magnitude in their stomach bacterial loads. Thus, adjuvanted rFUVL might be considered as a promising vaccine candidate for the control of H. pylori infection.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords Helicobacter Pylori ; Immunization ; Chimeric ; Adjuvant ; Fusion Protection; Brucella-melitensis Infection; Vaccine Ctb-ue; Confers Protection; Therapeutic-efficacy; Provides Protection; Oral Immunization; Mucosal Immunity; Gastric-cancer; Mouse Model; Nod Mice

ISSN (print) / ISBN 0264-410X

e-ISSN 1358-8745

Journal Vaccine

Quellenangaben Volume: 36, Issue: 34, Pages: 5124-5132

Publisher Elsevier

Publishing Place The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1gb, Oxon, England

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Research Unit Gene Vector (AGV)