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Confrontation with Acinetobacter Baumannii by Exploiting its Biofilm: An Insight to Vaccine Development

AUTHORS

Yaser Fattahian 1 , Iraj Rasooli 1 , * , Seyed Latif Mousavi Gargari 1 , Gunnar Sandstrm 2 , Mohammad Reza Rahbar 3 , Jafar Amani 4 , Shakiba Darvish Alipour Astaneh 1

AUTHORS INFORMATION

1 Department of Biology, Shahed University, Tehran, IR Iran

2 Karolinska Institutet and Karolinska, University Hospital, Huddinge, Department of Laboratory Medicine, Division of Clinical Microbiology, Stockholm, Sweden

3 Molecular Diagnosis Department, Saadati Pathobiology Laboratory, Shiraz, IR Iran

4 Applied Biotechnology Research Center, Baqiyatallah Medical Science University, Tehran, IR Iran

How to Cite: Fattahian Y, Rasooli I, Mousavi Gargari S L, Sandstrm G, Rahbar M R, et al. Confrontation with Acinetobacter Baumannii by Exploiting its Biofilm: An Insight to Vaccine Development, Arch Clin Infect Dis. Online ahead of Print ; 7(1):0-0.

ARTICLE INFORMATION

Archives of Clinical Infectious Diseases: 7 (1); 0-0
Article Type: Research Article

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Abstract

Objectives: Acinetobacter baumannii is an opportunistic pathogen that causes serious infections in humans by colonization of medical devices. The capacity of this pathogen to persist in hospital settings could be due to its ability to form biofilms. In the present study we evaluated the effect of antibodies against one of surface components of A. baumannii on in vitro biofilm formation.

Materials and Methods: The 1113 bp fragment of Bap (biofilm associate protein)gene from A. baumannii genome was amplified and cloned. The recombinant protein was expressed and purified and used to raise antibodies in mice. Antibody titer was evaluated by ELISA. In vitro biofilm inhibition was evaluated using the mice sera.

Results: Injection of Bap subunit resulted in high titers of antibody. Immunized mice serum had significant (P< 0.001) inhibitory effect on biofilm formation. In vitro inhibition of biofilm formation by A. baumannii was studied at 1:50 concentrations of immunized and unimmunized mice sera. Immunized mice serum had significant (P <0.001) inhibitory effect on biofilm formation.

Conclusions: Adsorption of antibodies to Bap might interfere with bacterial adhesion to the surface. These antibodies were found to be potent biofilm inhibitors.

Keywords

Acinetobacter Baumannii Biofilm Associated Protein (Bap) Biofilm Antibody

© 0, Archives of Clinical Infectious Diseases. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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