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Studies on the contribution of c-fos/AP-1 to arthritic joint destruction.
S Shiozawa, … , K Tanaka, K Hino
S Shiozawa, … , K Tanaka, K Hino
Published March 15, 1997
Citation Information: J Clin Invest. 1997;99(6):1210-1216. https://doi.org/10.1172/JCI119277.
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Research Article Article has an altmetric score of 3

Studies on the contribution of c-fos/AP-1 to arthritic joint destruction.

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Abstract

Features characteristic to rheumatoid joint destruction, including synovial overgrowth and bone resorption, are experimentally produced by augmenting c-fos gene expression. We tested here if arthritic joint destruction was inhibited upon inactivation of the c-fos/AP-1 signal by administering short double-stranded AP-1 DNA oligonucleotides into mice with collagen-induced arthritis to compete for the binding of AP-1 in vivo at the promoter binding site. Arthritic joint destruction was inhibited in a sequence-specific and dose-dependent manner by oligonucleotides containing the AP-1 sequence. The oligonucleotides inhibited gene expression at the transcriptional level. Nucleotide sequences besides AP-1 also appeared to be important structurally for binding of AP-1 onto DNA and for the stability of oligonucleotides against nucleases. Immunohistochemical chase experiment administering biotinylated oligonucleotides into arthritic mice showed that AP-1 oligonucleotides reached the inflamed joint. Thus, activation of c-fos/AP-1 appears essentially important in arthritic joint destruction.

Authors

S Shiozawa, K Shimizu, K Tanaka, K Hino

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