Tissue MicroArray (TMA) analysis of normal and persistent Chlamydophila pneumoniae infection
Borel, Nicole, Mukhopadhyay, Sanghamitra, Kaiser, Carmen, Sullivan, Erin D., Miller, Richard D., Timms, Peter, Summersgill, James T., Ramirez, Julio A., & Pospichil, Andreas (2006) Tissue MicroArray (TMA) analysis of normal and persistent Chlamydophila pneumoniae infection. BMC Infectious Diseases, 6(152), pp. 1-8.
Background: Chlamydophila pneumoniae infection has been implicated as a potential risk factor for
atherosclerosis, however the mechanism leading to persistent infection and its role in the disease
process remains to be elucidated.
Methods: We validated the use of tissue microarray (TMA) technology, in combination with
immunohistochemistry (IHC), to test antibodies (GroEL, GroES, GspD, Ndk and Pyk) raised
against differentially expressed proteins under an interferon-gamma (IFN-γ) induced model of
Results: In the cell pellet array, we were able to identify differences in protein expression patterns
between untreated and IFN-γ treated samples. Typical, large chlamydial inclusions could be
observed in the untreated samples with all antibodies, whereas the number of inclusions were
decreased and were smaller and atypical in shape in the IFN-γ treated samples. The staining results
obtained with the TMA method were generally similar to the changes observed between normal
and IFN-γ persistence using proteomic analysis. Subsequently, it was shown in a second TMA
including archival atheromatous heart tissues from 12 patients undergoing heart transplantation,
that GroEL, GroES, GspD and Pyk were expressed in atheromatous heart tissue specimens as well,
and were detectable morphologically within lesions by IHC.
Conclusion: TMA technology proved useful in documenting functional proteomics data with the
morphologic distribution of GroEL, GroES, GspD, Ndk and Pyk within formalin-fixed, paraffinembedded
cell pellets and tissues from patients with severe coronary atherosclerosis. The
antibodies GroEL and GroES, which were upregulated under persistence in proteomic analysis,
displayed positive reaction in atheromatous heart tissue from 10 out of 12 patients. These may be
useful markers for the detection of persistent infection in vitro and in vivo.
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|Item Type:||Journal Article|
|Additional Information:||The contents of this journal can be freely accessed online via the journal’s web page (see hypertext link).|
|Subjects:||Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000)|
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health|
Current > Institutes > Institute of Health and Biomedical Innovation
|Copyright Owner:||Copyright 2006 (The authors)|
|Copyright Statement:||© 2006 Borel et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.|
|Deposited On:||16 Jan 2008|
|Last Modified:||29 Feb 2012 23:27|
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