Journalartikel

Jahr der Veröffentlichung: 2016

Seiten: 1198-1207

Zeitschrift: The Journal of Infectious Diseases

Bandnummer: 213

Heftnummer: 7

ISSN: 0022-1899

eISSN: 1537-6613

Open Access Status: Bronze

DOI Link: https://doi.org/10.1093/infdis/jiv569

Verlag: Oxford University Press

Abstract: 
Urinary tract infections caused by uropathogenic Escherichia coli (UPEC) pathovars belong to the most frequent infections in human. It is well established that UPEC can subvert innate immune responses, but the role of UPEC in interfering with host cell death pathways is not known. Here, we show that UPEC abrogates activation of the host cell prosurvival protein kinase B signaling pathway, which results in the activation of mammalian forkhead box O (FOXO) transcription factors. Although FOXOs were localized in the nucleus and showed increased DNA-binding activity, no change in the expression levels of FOXO target genes were observed. UPEC can suppress BIM expression induced by LY249002, which results in attenuation of caspase 3 activation and blockage of apoptosis. Mechanistically, BIM expression appears to be epigenetically silenced by a decrease in histone 4 acetylation at the BIM promoter site. Taken together, these results suggest that UPEC can epigenetically silence BIM expression, a molecular switch that prevents apoptosis.

Harvard-Zitierstil: Zhang, Z., Wang, M., Eisel, F., Tchatalbachev, S., Chakraborty, T., Meinhardt, A., et al. (2016) Uropathogenic Escherichia coli Epigenetically Manipulate Host Cell Death Pathways, The Journal of Infectious Diseases, 213(7), pp. 1198-1207. https://doi.org/10.1093/infdis/jiv569

APA-Zitierstil: Zhang, Z., Wang, M., Eisel, F., Tchatalbachev, S., Chakraborty, T., Meinhardt, A., & Bhushan, S. (2016). Uropathogenic Escherichia coli Epigenetically Manipulate Host Cell Death Pathways. The Journal of Infectious Diseases. 213(7), 1198-1207. https://doi.org/10.1093/infdis/jiv569