The competitive binding of STAT3 and NF-kappaB on an overlapping DNA binding site - PubMed (original) (raw)

The competitive binding of STAT3 and NF-kappaB on an overlapping DNA binding site

Z Zhang et al. Biochem Biophys Res Commun. 1997.

Abstract

Interleukin-1 (IL-1) and interleukin-6 (IL-6), two early-response cytokines expressed during an acute inflammatory reaction, regulate the expression of several acute phase proteins (APP) in the liver. IL-1 relays its signal to specific genes via NF-kappaB, whereas IL-6 sends its signal to the nucleus via STAT1alpha and STAT3. Interestingly, overlapping binding sites for STAT3 and NF-kappaB can be found on promoters of several APP genes. We show here that both STAT3 and NF-kappaB are active during inflammation and are capable of binding to a STAT3/NF-kappaB overlapping DNA motif derived from the alpha2-macroglobulin gene promoter. In vitro binding assays demonstrated that NF-kappaB competes with STAT3 binding on this probe. Our results suggest that these transcription factors regulate each others' function through competition for overlapping DNA binding sites.

PubMed Disclaimer

Similar articles

Cited by

MeSH terms

Substances

LinkOut - more resources