RESEARCH ARTICLE


Pet Induces IL1, TNFα, MIF and IL1Ra Through the IKKαβ/NFκB Pathway



Alejandro Benítez-Guzmán1, Carlos Eslava2, Claudia González-Espinosa3, M. Eugenia Torres-Márquez*, 1
1 Biochemistry and Public Health Departments, School of Medicine. Apdo. Postal 70- 159. 04510 DF, UNAM, México
2 Public Health Departments, School of Medicine. Apdo. Postal 70- 159. 04510 DF, UNAM, México
3 Pharmacobiology Department, Center for Investigation and Advanced Studies, IPN, South Campus, Mexico City, México


© 2011 Benítez-Guzmán et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Biochemistry Department, School of Medicine. UNAM, Apdo. Postal 70- 159, 04510 DF, Mexico; Tel: (5255) 56232510; Fax: (5255) 56162419; E-mails: metorres@servidor.unam.mx, torresmarquez@gmail.com


Abstract

Plasmid encoded protein (Pet), a product of E. coli , infiltrates leukocyte in experimental models and acts on macrophages as a chemokine. As an immune response orchestrator, macrophages play an important role in inducing proinflammatory cytokines. In this work, we tested whether in macrophages Pet stimulates the expression of IL1, TNFα, MIF and the antagonist IL1Ra. We also sought the IKKαβ/NFκB pathway as a possible mediator. We found that indeed Pet increases the mRNA of inflammatory cytokines and the antagonist IL1Ra with different rates and kinetics through the IKKαβ/NFκB pathway, which could be consistent as a factor in chronic inflammation.

Keywords: Plasmid Encoded Protein, Inflammation, Signal Transduction, IBD, Macrophage.