Importance of cortactin for efficient epithelial NF-kappa B activation by Helicobacter pylori, Salmonella enterica and Pseudomonas aeruginosa, but not Campylobacter spp.

Tegtmeyer-Backert N, Soltan Esmaeili D, Sharafutdinov I, Knorr J, Naumann M, Alter T, Backert S (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Book Volume: 11

Journal Issue: 4

DOI: 10.1556/1886.2021.00023

Abstract

Transcription factors of the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kappa B) family control important signaling pathways in the regulation of the host innate immune system. Various bacterial pathogens in the human gastrointestinal tract induce NF-kappa B activity and provoke pro-inflammatory signaling events in infected epithelial cells. NF-kappa B activation requires the phosphorylation-dependent proteolysis of inhibitor of kappa B (I kappa B) molecules including the NF-kappa B precursors through ubiquitin-mediated proteolysis. The canonical NF-kappa B pathway merges on I kappa B kinases (IKKs), which are required for signal transduction. Using CRISPR-Cas9 technology, secreted embryonic alkaline phosphatase (SEAP) reporter assays and cytokine enzyme-linked immunosorbent assay (ELISA), we demonstrate that the actin-binding protein cortactin is involved in NF-kappa B activation and subsequent interleukin-8 (IL-8) production upon infection by Helicobacter pylori, Salmonella enterica and Pseudomonas aeruginosa. Our data indicate that cortactin is needed to efficiently activate the c-Sarcoma (Src) kinase, which can positively stimulate NF-kappa B during infection. In contrast, cortactin is not involved in activation of NF-kappa B and IL-8 expression upon infection with Campylobacter species C. jejuni, C. coli or C. consisus, suggesting that Campylobacter species pluralis (spp.) induce a different signaling pathway upstream of cortactin to trigger the innate immune response.

Authors with CRIS profile

Involved external institutions

Freie Universität Berlin Germany (DE) Otto-von-Guericke-Universität Magdeburg Germany (DE)

How to cite

APA:

Tegtmeyer-Backert, N., Soltan Esmaeili, D., Sharafutdinov, I., Knorr, J., Naumann, M., Alter, T., & Backert, S. (2021). Importance of cortactin for efficient epithelial NF-kappa B activation by Helicobacter pylori, Salmonella enterica and Pseudomonas aeruginosa, but not Campylobacter spp. European Journal of Microbiology and Immunology, 11(4). https://doi.org/10.1556/1886.2021.00023

MLA:

Tegtmeyer-Backert, Nicole, et al. "Importance of cortactin for efficient epithelial NF-kappa B activation by Helicobacter pylori, Salmonella enterica and Pseudomonas aeruginosa, but not Campylobacter spp." European Journal of Microbiology and Immunology 11.4 (2021).

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