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Published in: Inflammation 4/2018

01-08-2018 | ORIGINAL ARTICLE

ERK1/2 and the Bcl-2 Family Proteins Mcl-1, tBid, and Bim Are Involved in Inhibition of Apoptosis During Persistent Chlamydia psittaci Infection

Authors: Li Li, Chuan Wang, Yating Wen, Yuming Hu, Yafeng Xie, Man Xu, Mingxing Liang, Wei Liu, Liangzhuan Liu, Yimou Wu

Published in: Inflammation | Issue 4/2018

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Abstract

Chlamydia psittaci is an obligate intracellular pathogen that can cause zoonosis. Persistent C. psittaci infection can inhibit apoptosis in host cells, thus extending their survival and enabling them to complete their growth cycle. In this study, the antiapoptotic effects of persistent C. psittaci infection, induced by treatment with IFN-γ, were found to be associated with both the death receptor and the mitochondrial pathways of apoptosis. These effects were mediated by Bcl-2 family members, as evidenced by the decreased expression of proapoptotic proteins, such as tBid and Bim. Simultaneously, the antiapoptotic protein Mcl-1 was upregulated by persistent C. psittaci infection. Increased phosphorylation of ERK1/2 was observed; however, the expression of Bad, unlike that of other proapoptotic proteins, did not seem to be involved in this process. In summary, persistent chlamydial infection exerts antiapoptotic effects through both the death receptor and the mitochondrial pathways, in a process that is regulated by the ERK1/2 and apoptotic proteins of the Bcl-2 family.
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Metadata
Title
ERK1/2 and the Bcl-2 Family Proteins Mcl-1, tBid, and Bim Are Involved in Inhibition of Apoptosis During Persistent Chlamydia psittaci Infection
Authors
Li Li
Chuan Wang
Yating Wen
Yuming Hu
Yafeng Xie
Man Xu
Mingxing Liang
Wei Liu
Liangzhuan Liu
Yimou Wu
Publication date
01-08-2018
Publisher
Springer US
Published in
Inflammation / Issue 4/2018
Print ISSN: 0360-3997
Electronic ISSN: 1573-2576
DOI
https://doi.org/10.1007/s10753-018-0785-8

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