Transforming growth factor (TGF)-beta-activated kinase 1 mimics and mediates TGF-beta-induced stimulation of type II collagen synthesis in chondrocytes independent of Col2a1 transcription and Smad3 signaling.

Abstract excerpt

Transforming growth factor (TGF)-beta, bone morphogenetic protein (BMP), and interleukin-1beta activate TGF-beta-activated kinase 1 (TAK1), which lies upstream of the p38 MAPK, JNK, and NF-kappaB pathways. Our knowledge remains incomplete of TAK1 target genes, requirement for cooperative signaling, and capacity for shared or segregated ligand-dependent responses. We show that adenoviral overexpression of TAK1a in...

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