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Archives of Clinical Infectious Diseases

Infectious Diseases and Tropical Medicine Research Center, SBUMS

e-ISSN 2345-2641
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https://doi.org/10.5812/archcid.14068

Immunogenical Study of Chimeric Recombinant Intimin-Tir of Escherichia coli O157:H7 in Mice

Authors

Alavieh Yazdanparast1, Seyed Latif Mousavi1,*, Iraj Rasooli1, Jafar Amani2, Mohammadreza Jalalinadoushan3
1Department of Biology, Faculty of Basic Sciences, Shahed University, Tehran, IR Iran
2Applied Microbiology Research Center, Baqiyatallah University of Medical Sciences, Tehran, IR Iran
3Department of Pathology, School of Medicine, Shahed University, Tehran, IR Iran
*Corresponding Author: Department of Biology, Faculty of Basic Sciences, Shahed University, Tehran, IR Iran. Tel.: +98-2151212200, Fax: +98-2151212201, [email protected]. Email: [email protected]
Archives of Clinical Infectious Diseases:Vol. 7, issue 2; 45-51
Published online:Apr 12, 2012
Article type:Research Article
Received:Feb 18, 2012
Accepted:Mar 05, 2012
How to Cite:Yazdanparast A, Mousavi SL, Rasooli I, Amani J, Jalalinadoushan M. Immunogenical Study of Chimeric Recombinant Intimin-Tir of Escherichia coli O157:H7 in Mice. Arch Clin Infect Dis. 2012;7(2):14068. doi: https://doi.org/10.5812/archcid.14068

Abstract

Background:

Enterohemorrhagic Escherichia coli (EHEC) O157:H7 causes hemorrhagic colitis. The most important reservoirs of this bacterium are domestic ruminant, particularly the cattle. Although it has low prevalence, the severity of consequent diseases of this bacterium brings concerns to develop effective vaccines. This bacterium is able to produce attaching-effacing (A/E) lesions in intestinal epithelial cells and several genes have been implicated in A/E formation. EspA is part of the type III secretion systems that could deliver Tir (translocatedintimin receptor) to the host epithelial cell.

Objectives:

The eae gene encoded intimin protein which is essential for colonization of the mucosa and A/E lesions formation by docking to the Tir.

Materials and Methods:

Based on these concepts, the immunogenic part of eae and tir genes were constructed and fused together by a linker. The synthetic constructs were subcloned on pET28a + vector and expressed in E. coli BL21DE3. The purified chimeric recombinant protein was injected to mice and the rising antibody was assessed.

Results:

The results showed that the chimeric recombinant protein induced strong humoral response as well as protection against live oral challenges using E. coli O157:H7.

Conclusions:

The rIT could reduce bacterial shedding effectively.

Keywords<italic>Escherichia coli</italic> O157:H7Tir protein<italic>E. coli</italic>

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Copyright

© 2012, Author(s). This open-access article is available under the Creative Commons Attribution 4.0 (CC BY 4.0) International License (https://creativecommons.org/licenses/by/4.0/), which allows for unrestricted use, distribution, and reproduction in any medium, provided that the original work is properly cited.

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