PPAR , a member of the nuclear receptor superfamily, and thioredoxin, a critical redox-regulator in cells, were found to form a negative feedback loop, which autoregulates transcriptional activity of PPAR . Thioredoxin was identified as a target gene of PPAR . Activation of PPAR leads to increase of thioredoxin expression as well as its translocation from cytoplasm to nucleus, whereas ectopic o...