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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Twist regulates cytokine gene expression through a negative feedback loop that represses NF-kappaB activity.

During Drosophila embryogenesis, the dorsal transcription factor activates the expression of twist, a transcription factor required for mesoderm formation. We show here that the mammalian twist proteins, twist-1 and -2, are induced by a cytokine signaling pathway that requires the dorsal-related protein RelA, a member of the NF-kappaB family of transcription factors. Twist-1 and -2 repress cytokine gene expression through interaction with RelA. Mice homozygous for a twist-2 null allele or doubly heterozygous for twist-1 and -2 alleles show elevated expression of proinflammatory cytokines, resulting in perinatal death from cachexia. These findings reveal an evolutionarily conserved signaling circuit in which twist proteins regulate cytokine signaling by establishing a negative feedback loop that represses the NF-kappaB-dependent cytokine pathway.[1]

References

  1. Twist regulates cytokine gene expression through a negative feedback loop that represses NF-kappaB activity. Sosić, D., Richardson, J.A., Yu, K., Ornitz, D.M., Olson, E.N. Cell (2003) [Pubmed]
 
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