title: Regulatory potential for concerted modulation of Nrf2- and Nfkb1-mediated gene expression in inflammation and carcinogenesis.
abstract: Many studies have implicated nuclear factor E2-related factor 2 (Nrf2) and nuclear factor-kappaB1 (Nfkb1) in inflammation and cancer. However, the regulatory potential for crosstalk between these two important transcription factors in inflammation and carcinogenesis has not been explored. To delineate conserved transcription factor-binding site signatures, we performed bioinformatic analyses on the promoter regions of human and murine Nrf2 and Nfkb1. We performed multiple sequence alignment of Nrf2 and Nfkb1 genes in five mammalian species - human, chimpanzee, dog, mouse and rat - to explore conserved biological features. We constructed a canonical regulatory network for concerted modulation of Nrf2 and Nfkb1 involving several members of the mitogen-activated protein kinase (MAPK) family and present a putative model for concerted modulation of Nrf2 and Nfkb1 in inflammation/carcinogenesis. Our results reflect potential for putative crosstalk between Nrf2 and Nfkb1 modulated through the MAPK cascade that may influence inflammation-associated etiopathogenesis of cancer. Taken together, the elucidation of potential relationships between Nrf2 and Nfkb1 may help to better understand transcriptional regulation, as well as transcription factor networks, associated with the etiopathogenesis of inflammation and cancer.
authors.affiliation: Department of Pharmaceutics, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA.
authors.forename: S
authors.initials: S
authors.lastname: Nair
authors.forename: S T
authors.initials: ST
authors.lastname: Doh
authors.forename: J Y
authors.initials: JY
authors.lastname: Chan
authors.forename: A-N
authors.initials: AN
authors.lastname: Kong
authors.forename: L
authors.initials: L
authors.lastname: Cai
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001665:Binding Sites; D002471:Cell Transformation, Neoplastic / Q000235:genetics* / Q000378:metabolism*; D019295:Computational Biology; D017124:Conserved Sequence; D015972:Gene Expression Regulation, Neoplastic / Q000235:genetics*; D006801:Humans; D007249:Inflammation / Q000235:genetics / Q000378:metabolism; D051379:Mice; D046228:Microarray Analysis; D008969:Molecular Sequence Data; D051267:NF-E2-Related Factor 2 / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D052002:NF-kappa B p50 Subunit / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D051381:Rats; D016415:Sequence Alignment
chemical_list: D051267:NF-E2-Related Factor 2; D052002:NF-kappa B p50 Subunit