[HTML][HTML] Fibroblast-specific expression of a kinase-deficient type II transforming growth factor β (TGFβ) receptor leads to paradoxical activation of TGFβ signaling …

CP Denton, B Zheng, LA Evans, X Shi-wen… - Journal of Biological …, 2003 - ASBMB
To better understand the role of disrupted transforming growth factor β (TGFβ) signaling in
fibrosis, we have selectively expressed a kinase-deficient human type II TGFβ receptor
(TβRIIΔk) in fibroblasts of transgenic mice, using a lineage-specific expression cassette
subcloned from the pro-α2 (I) collagen gene. Surprisingly, despite previous studies that
characterized TβRIIΔk as a dominant negative inhibitor of TGFβ signaling, adult mice
expressing this construct demonstrated TGFβ overactivity and developed dermal and …