[HTML][HTML] Activator protein 1 (Fos/Jun) functions in inflammatory bone and skin disease

R Zenz, R Eferl, C Scheinecker, K Redlich… - Arthritis research & …, 2008 - Springer
R Zenz, R Eferl, C Scheinecker, K Redlich, J Smolen, HB Schonthaler, L Kenner
Arthritis research & therapy, 2008Springer
Abstract Activator protein 1 (AP-1)(Fos/Jun) is a transcriptional regulator composed of
members of the Fos and Jun families of DNA binding proteins. The functions of AP-1 were
initially studied in mouse development as well as in the whole organism through
conventional transgenic approaches, but also by gene targeting using knockout strategies.
The importance of AP-1 proteins in disease pathways including the inflammatory response
became fully apparent through conditional mutagenesis in mice, in particular when …
Abstract
Activator protein 1 (AP-1) (Fos/Jun) is a transcriptional regulator composed of members of the Fos and Jun families of DNA binding proteins. The functions of AP-1 were initially studied in mouse development as well as in the whole organism through conventional transgenic approaches, but also by gene targeting using knockout strategies. The importance of AP-1 proteins in disease pathways including the inflammatory response became fully apparent through conditional mutagenesis in mice, in particular when employing gene inactivation in a tissue-specific and inducible fashion. Besides the well-documented roles of Fos and Jun proteins in oncogenesis, where these genes can function both as tumor promoters or tumor suppressors, AP-1 proteins are being recognized as regulators of bone and immune cells, a research area termed osteoimmunology. In the present article, we review recent data regarding the functions of AP-1 as a regulator of cytokine expression and an important modulator in inflammatory diseases such as rheumatoid arthritis, psoriasis and psoriatic arthritis. These new data provide a better molecular understanding of disease pathways and should pave the road for the discovery of new targets for therapeutic applications.
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